Insulation paper does not play the role of pressure

The diamond dotted paper that permeates the electrolyte is only the negative plate, and the insulating layer is the oxide layer of the outer layer of the positive plate.
As for the shiny aluminum foil is the negative lead.
When the electrolytic capacitor plus reverse voltage, it will layer that layer of decomposition, so leakage,
If long-term plus a small amount of reverse (to ensure that the capacitor will not explode), and even in the negative aluminum foil to establish oxide,
So that the polarity of the electrolytic capacitor is reversed.

The characteristics of insulating paper and what is its performance

1, most of the insulation cable paper due to the use of physical properties, temperature, humidity, chemical environment and other different types of use, insulation paper is one of them;
2, insulating paper can be based on the thickness of the insulation using different models, the staff can be adjusted according to the actual needs of the length.
3, insulated paper tape in the original polyester electrical tape under the premise of its cutting into a variety of width, can effectively control costs, save time to improve efficiency, reduce a lot of trouble;
4, insulating tape also because our company clean and tidy environment, can effectively guarantee his insulation medium, ash loss and other aspects of performance

Transformers are usually used in the following three kinds of insulating paper

Transformers are usually used in the following three kinds of insulation paper:
1, Miki insulation paper, also known as kraft paper, yellow, thickness: 0.13mm ~ 0.5mm.
2, NOMEX insulation paper, also known as Connaught paper, light yellow, thickness: 0.05mm ~ 0.76mm.
3, NHN Insulation paper, thickness: 0.1mm ~ 0.5mm

What is impregnated insulating paper?

The impregnated insulating paper is an insulating paper for pressing the laminated product after impregnating the resin. The impregnated insulating paper is divided into a sulphate wood pulp paper and a sulfite wood pulp paper according to the use of the laminate. Impregnated insulating paper is the biggest feature is a good impregnation, the height of its absorption is the highest insulation paper, impregnated insulating paper was neutral.
epoxy glass laminate sheet is made of electrical insulation paper by creping. Wrinkles in the transverse direction, wrinkles are pulled when stretched. Due to different wrinkle processing procedures, wrinkled paper with different elongation can be made. Insulating paper thickness is generally 0.05mm ~ 0.12mm, elongation range of 5% to 200%. glass fiber sheet is often used in oil-immersed transformers, such as windings, wires and insulation screens.

Who says insulating paper is resistant to pressure?

The laminated mica sheet that permeates the electrolyte is only the negative plate, and the insulating layer is the oxide layer of the outer layer of the positive plate.
As for the shiny aluminum foil is the negative lead.
When the electrolytic capacitor plus reverse voltage, it will layer that layer of decomposition, so leakage,
If long-term plus a small amount of reverse (to ensure that the capacitor will not explode), and even in the negative aluminum foil to establish oxide,
So that the polarity of the electrolytic capacitor is reversed.

How to identify insulating paper DMD and DMDM

DMD insulation paper full name is polyester film polyester fiber non-woven soft composite material, is a layer of polyester film coated with adhesive, one side for the polyester fiber non-woven composite, calendering made of a composite Insulation material products, referred to as DMD. There is a DMDM, then what is the difference between the two? give you the following:
      DM refers to two kinds of composite insulation paper, DMD refers to the three layers of composite insulation paper, where D is Dacron, refers to the polyester non-woven, that is, polyester or really good. M refers to a polyester film. DMD insulation paper is the outer two layers of polyester, the middle layer of polyester film, glue with glue from the composite products.
      The number of layers is different from the polyester film and polyester fiber nonwoven fabric with adhesive two to four layers of bonding between the two layers of DM, three for the DMD, four for the DMDM. Have a good mechanical, electrical performance, suitable for electrical appliances, tank insulation and liner insulation, heat-resistant grade of 130.

NHN Insulation paper is used as cable, coil and other electrical equipment, insulation materials, with good insulation properties and mechanical strength. Insulation paper can greatly improve the design of such transformers, reduce electrical losses, improve standby capacity, increase safety and reliability, and reduce the conductor and core steel, reduce costs. Insulating paper can also improve the performance of liquid-filled transformers, reducing the number of maintenance. In addition, the versatility and simplicity of insulating paper can help reduce inventory and cost.
NHN insulating paper is widely used in motors and generators for wedge insulation, phase insulation, end laminates and so on. So that all kinds of rotating equipment (EPGC202, DC motor, random coil and die winding, and even large turbo generators) better insulation, better mechanical, higher safety, longer service life.

The development and development of insulation transformer pressboard is one of the key factors affecting the development of electrical technology. From the future trend, the requirements of the development of high pressure, heat insulation, impact resistance, environmental insulation, composite insulation, corrosion resistance, water resistance, oil resistance, resistance to cryogenic, radiation and flame retardant materials, research and development of environmentally friendly energy- Motor F, H-class insulation series, such as unsaturated polyester resin glass felt board; high-voltage power transmission equipment with sulfur hexafluoride gaseous medium; instead of chlorinated biphenyl new non-toxic synthetic media; high-performance bakelite electrical insulation board; synthetic paper composite insulation; flame retardant rubber and plastic materials and surface protection materials, while actively promoting the traditional electrical equipment insulation materials replacement.

phenolic laminated sheet has a certain characteristics, in the end with what characteristics?
First, chemical resistance
Second, glossy, partially transparent or translucent
Third, most of the good insulator
Fourth, light weight and strong
Fifth, the processing is easy to mass production, cheap
Sixth, the use of a wide range of useful, easy to color, some high temperature
Seventh, storage of goods can play a moisture-proof effect of plastic is also divided into general-purpose plastics and engineering plastics, mainly the use of the broad to define, such as PE, PP cheap, can be used in a variety of different types of machine production

Insulation resistance of insulating materials

phenolic rod can prevent current from passing through the material. Its resistivity is very high, usually in the range of 10 ~ 10Ω · m. What is the flame resistance of insulating materials? Here we come together to understand the next:
The flame resistance of NMN Insulating material refers to the ability of the insulating material to resist the continued combustion when it is combusted or burned away from the flame. With the increasing use of polyimide adhesive tape, its flammability requirements are more important, people through various means to improve and improve the flame resistance of insulating materials. The higher the flame resistance, the better the safety.

What does high-voltage insulation contain?

High-voltage mica insulation sheets is a kind of insulating material, insulation material is a kind of insulator, it also includes solid and liquid. That is to say, high-voltage insulation material must be insulating material, but the insulation material and must be insulated high voltage, such as ordinary wire foreskin, but the high voltage can only be instantaneous breakdown.
High voltage insulation material is vulcanized fiber sheet. According to the national standard GB2900.5 provides the definition of insulating material is: "used to make the device in the epoxy glass laminate sheet." That is, to prevent the current through the material. Its resistivity is very high, usually in the range of 10 ^ 9 ~ 10 ^ 22Ω · m. As in the motor, the insulating material around the conductor isolates the turns and isolates it from the grounded stator core to ensure safe operation of the motor.

The nature and use of various types of epoxy board products in insulating materials

Epoxy boards contain flame retardant materials, so it is also an mica tape for cable, a lot of this type of material, can be distinguished according to different basis, but the same is their performance, high temperature, corrosion resistance, high Toughness, high strength, high mechanical processing and so on.
Epoxy board can be divided into water green, water blue, black, yellow, white; or by chemical composition can be divided into halogen epoxy plate and halogen-free epoxy board; can also be divided into flame retardant epoxy Board and non-flame retardant epoxy board two categories.
To G11 epoxy board, it is a hard mica cable tape, its heat resistance and water resistance are very good, glass transition temperature of 175 degrees Celsius, can be used in humid environments. Therefore, such a plate is mainly used to manufacture high-voltage switch.
There is also a water green G10 epoxy board, which is made by dipping the alkali-free glass fiber cloth with epoxy resin. Since the alkali-free glass fiber cloth is a material containing no halogen element, it does not cause environmental Pollution, switchgear, transformers, explosion-proof electrical appliances are made of this insulating material.
Compared to the price of 3240 epoxy board cheaper, such acetate cloth tapes are generally used in low-grade, mid-range electrical products. In addition, there is a special electronic parts and epoxy phenolic resin and other materials made of hot FR-4 epoxy board, mainly used to manufacture insulation pads, transformer insulation board, grinding gears and so on.

How to measure the mechanical strength and insulation properties of insulating materials?

Any mechanical equipment in the choice of insulating materials, the concern is nothing more than the material of the fiber material, density, permeability, uniformity and a series of mechanical strength. What is the mechanical strength of the insulating material? What are the requirements?
The mechanical strength of the EPGC202 mainly refers to the tensile strength, the stamping strength, the tear strength and the toughness, among which the insulating material is required to withstand the tensile load without being pulled The maximum stress of the break.
And the stamping strength of the insulating material refers to a measure of the ability to withstand the pressure without being broken; the tear strength is the force required to tear the insulating material to the appropriate standard; and the toughness, in the case where the polyimide glass fiber is folded or bent When the strength to meet the corresponding requirements.
 In addition, it is necessary to judge the solid insulation properties of the insulating material. The usual way is to measure the degree of polymerization of the material or to measure the content of furfural in the oil by means of high performance liquid chromatography (HPLC), so that when the equipment fails , Whether it will adversely affect the paper banding tape.
In the maintenance of insulating materials in the process, should pay attention to control the rated load of equipment, requiring the operation of the environment air circulation, heat dissipation conditions, to prevent the temperature rise and the cabinet lack of oil. Of course, to prevent oil pollution, deterioration caused by accelerated aging of insulating materials, thereby reducing its insulation performance.

The types and characteristics of mica products as insulating materials

Various types of mica products have excellent phenolic rod, so they are also insulating materials, and the kinds of products are also many, the production process and performance characteristics are so different, but also need to further distinguish. After mastering this knowledge, we have a deeper understanding of the insulation material.
One is a soft mica plate, it is a plate-like transformer pressboard, is bonded with adhesive tape mica or adhesive with mica adhesive in single or double-sided reinforcement material, made by baking, the general Used in motor slot insulation and turn insulation. Under normal circumstances, the soft mica board area will not be less than 400 × 600mm ², and requires a neat edge, adhesive distribution even; do not allow impurities, stratification and other undesirable phenomena.
The other is mica plate, is a different hardness of the insulation material, but in any case, they have excellent high temperature insulation properties, but also in high temperature insulation materials, has a good price; at the same time there are excellent electrical insulation Performance and bending strength and processing performance.
There is also a epoxy fiberglass tube, it is made of hard plate-like insulation material from the gasket, gasket, pad or other special-shaped pieces. When it is normal, this kind of insulating material has good mechanical strength and electrical performance, suitable for a variety of electrical appliances, welding machines, arrester, electric components such as gasket insulation.
There are also mica tubes and mica tapes, the former is a rigid tubular insulation material, mainly by the stripping mica or mica paper with the appropriate adhesive bonding in the single-sided reinforcement material from the rolling; the latter is the band of insulation material. In addition, the commutator mica board is a special insulation material, specifically for the working temperature of 130 ℃ DC motor commutator between the copper insulation design.

What are the differences and commonalities of insulating materials?

The same is paper products, but the mica insulation sheets and green shell paper is very different; and seemingly NHN insulation materials and NMN insulation materials are two different products, but in fact they have a lot in common. So sometimes can not only look or feel to judge, or to conduct in-depth analysis of the product in order to understand the relationship.
 For example, insulating paper is actually a composite insulation material, is coated with polyester film F-class adhesive, one side of the adhesive polyester fiber made of non-woven; and green shell paper is only a common by the fluorine processing Into the paper products, so they show the characteristics are different.
 Tested, the vulcanized fiber sheet has good mechanical strength, dielectric properties and high heat resistance, is Y series motor stereotypes insulation material, can be used as small and medium-sized motor slot insulation, inter-turn and interlayer insulation, Insulation and transformer insulation.
And green shell paper is showing a strong tensile strength, can be vertical and horizontal bending; and can be temperature, resistance to voltage, water, wear, grease, anti-aging, no blister, no glue, so it More suitable for electrical appliances, enameled wire, transformer insulation protection, is a good blocking gap material.
NHN Insulating Materials and epoxy glass laminate sheet appear to be two types of insulating materials, but they are all made of an intermediate layer of polyimide film and its two sides of the Nomex1 paper composed of soft composite materials; and heat resistance can be achieved H grade, and has good mechanical properties.
NHN insulation and NMN insulation are very smooth, mainly for low-voltage motor in the slot, slot cover and phase insulation; In addition, both can be used for transformers or other electrical insulation between the layers.

Transformers are usually used in the following three kinds of insulation paper:

1, Miki paper banding tape, also known as kraft paper, yellow, thickness: 0.13mm ~ 0.5mm.
2, NOMEX mica tape for cable, also known as Connaught paper, light yellow, thickness: 0.05mm ~ 0.76mm.
3, NMN insulation paper, thickness: 0.1mm ~ 0.5mm

What is the impregnation of insulating paper?

The impregnated insulating paper is an epoxy fiberglass tube for pressing the laminated product after impregnating the resin. The impregnated insulating paper is divided into a sulphate wood pulp paper and a sulfite wood pulp paper according to the use of the EPGC202. Impregnated insulating paper is the biggest feature is a good impregnation, the height of its absorption is the highest insulation paper, impregnated polyimide glass fiber was neutral.

The characteristics of insulating paper and what is its performance

1, most of the epoxy glass laminate sheet due to the use of physical properties, temperature, humidity, chemical environment and other different types, insulation paper is one of them;
2, phenolic rod can also be based on the thickness of the insulation using different models, the staff can be adjusted according to the actual needs of the length.
3, transformer pressboard tape in the original insulation paper under the premise of its cutting into a variety of width, can effectively control costs, save time to improve efficiency and reduce a lot of trouble;
4, insulating tape also because our company clean and tidy environment, can effectively guarantee his insulation medium, ash loss and other aspects of performance

Who says insulating paper is resistant to pressure?

The mica insulation sheets that permeates the electrolyte is only the negative plate, and the vulcanized fiber sheet is the oxide layer of the outer layer of the positive plate.
As for the shiny aluminum foil is the negative lead.
When the electrolytic capacitor plus reverse voltage, it will layer that layer of decomposition, so leakage,
If long-term plus a small amount of reverse (to ensure that the capacitor will not explode), and even in the negative aluminum foil to establish oxide,
So that the polarity of the electrolytic capacitor is reversed.

What are the characteristics of insulating paper?

1, most of the laminated compressed wood due to the use of physical properties, temperature, humidity, chemical environment and other different types, insulation paper is one of them;
2, insulation paper can also be based on the thickness of the insulation using different models, the staff can be adjusted according to the actual needs of the length.
3, insulated paper tape in the original soldering frames under the premise of its cutting into a variety of width, can effectively control costs, save time to improve efficiency and reduce a lot of trouble;
4, EPGC203 also because our company clean and tidy environment, can effectively guarantee his insulation medium, ash loss and other aspects of performance

Epoxy glass cloth laminate surface preparation and treatment

1. Copper surface after the formation of graphics and etching circuit, try to reduce the PTFE surface treatment and contact. The operator should wear clean gloves and lay the film on each board for delivery to the next program.
     2. After the etching of the PTFE surface with sufficient roughness for anti static plastic sheet. Where the sheet is etched or where the laminate is not covered, it is recommended that the PTFE surface be treated to provide sufficient attachment. The chemical composition used in the pth preparation process can also be used for surface treatment. Recommended plasma etching or sodium-containing chemical reagents
     3. Copper surface treatment should ensure the best adhesive strength. The brown copper oxide circuit treatment will enhance the surface shape to facilitate chemical phenolic paper sheet using TacBond adhesives. The first process requires a cleaner to remove the residual and deal with the oil. Followed by subtle copper etching to form a uniform roughened surface area. The brown oxide needle-like crystals solidify the adhesive layer during the lamination process. As with any chemical process, the full cleaning after each step is necessary. Salt residue will inhibit adhesion. The final rinse should be supervised and electrical insulating board at a pH of less than 8.5. Dry the layers and ensure that the surface is not contaminated with oil or the like.

Main Factors Affecting the Performance of Insulating Materials

1, insulation resistance and resistivity
The resistance is the reciprocal of the conductance, and the resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance, the reciprocal relationship between the two, for the bakelite electrical insulation board, always want the resistivity as high as possible.
2, relative dielectric constant and dielectric loss tangent
Insulation material uses two: electrical network components of the mutual insulation and capacitor medium (energy storage). The former requires a relatively small relative dielectric constant, which requires a relatively large relative dielectric constant, and both require dielectric loss tangent, especially in high frequency and high pressure applications of insulating materials, in order to make dielectric loss is small, require the use of Dielectric loss tangent small insulation material.
3, breakdown voltage and electrical strength
In a strong electric field under the destruction of insulating materials, loss of insulation into a conductive state, known as the breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). Electrical strength is under the conditions of the breakdown of the voltage and withstand the voltage between the two electrodes, that is, the unit thickness of the breakdown voltage. For insulation cable paper, the general breakdown voltage, electrical strength of the value of the higher the better.
4, tensile strength
Is the maximum tensile stress that the specimen is subjected to in the tensile test. It is the most widely used and most representative test of the mechanical properties of insulating materials.
5, resistance to burning
Refers to the ability of the laminated mica sheet to resist the continued combustion when it is in contact with the flame. With the increasing use of insulating materials, its resistance to flammability is more important, people through various means to improve and improve the flame resistance of insulating materials. The higher the flame resistance, the better the safety.
6, resistant to arc
Under the specified test conditions, the insulation transformer pressboard is resistant to the ability to act along the arc of its surface. Test the use of high-voltage AC current, by high pressure generated between the two electrodes of the arc, so that the surface of the insulating material to form the conductive layer of time required to determine the arc resistance of insulating materials. The greater the time value, the better the arc resistance.
7, the degree of sealing
On the oil quality, water quality isolation is better.

Polymer insulation board with chrysotile asbestos and cement as the basic raw material, the use of rotary screen copy of the plate making machine, copy bakelite electrical insulation board, trimming and oil and other processes made of high temperature arc can be used as motor, electrical parts The board can be used as an electrical insulation material, which can be used in the place where the humidity is large. The board has the advantages of strong quality, high strength, corrosion resistance, freezing resistance and resistance. Heat, vulcanized fiber sheet, fire and other advantages. Polymer insulation products, must be strictly in accordance with the requirements, drying and dipping treatment, or can not be used as electrical insulation materials. Insulation requirements are too high, before use and then dry again.
Polymer insulation board has a high dielectric properties, corrosion resistance.

In the entire laminated compressed wood along the way, but also experienced a lot of setbacks, early products because all aspects of technology is not yet mature in the use of the process encountered a lot of trouble and technical problems. With the technology more and more mature insulation materials began to develop rapidly, and its development is also due to the rapid development of the electromechanical industry, electromechanical industry is a traditional industry, as early as 1743 began the concept of mechanical and electrical integration, which A few years is the rapid development of epoxy glass laminate sheet is also its development is driven out, then the recent trend of the future of insulating materials is certainly toward the best direction in the development.

What are the characteristics of insulating materials:

① polyimide glass fiber most of the plastic light, chemical stability, not rust;
② good impact resistance;
③ has good transparency and abrasion resistance;
④ good insulation, low thermal conductivity;
⑤ general shape, good coloring, low processing costs;
⑥ most of the plastic heat resistance is poor, thermal expansion rate, easy to burn;
⑦ dimensional stability is poor, easy to deformation;
⑧ most of the low temperature resistance of plastic poor, low temperature brittle;
⑨ easy to age;
⑩ some plastic soluble in the solvent.

How many kinds of insulation materials?

Many types of flexible composite materials, can be divided into gas, liquid, solid three categories. Commonly used gas insulation materials are air, nitrogen, sulfur hexafluoride and so on. Liquid insulation materials are mainly mineral insulating oil, synthetic insulating oil (silicone oil, dodecyl benzene, polyisobutylene, isopropyl biphenyl, diaryl ethane, etc.) two categories. Solid insulation materials can be divided into organic, inorganic two categories. Organic solid insulation materials include insulating varnishes, insulating glue, insulating paper, insulating fiber products, plastic, rubber, lacquered lacquers and insulating impregnated fiber products, electrical thin films, composite products and adhesive tape, electrical laminates and so on. Inorganic solid insulation materials are mainly mica, glass, ceramics and their products. In contrast, solid insulation material variety, but also the most important. Different electrical equipment requirements for the performance of insulating materials are focused. High-voltage electrical equipment such as high-voltage motors, high-voltage cables and other insulation materials require high breakdown strength and low dielectric loss. Low-voltage electrical appliances, such as mechanical strength, elongation at break, heat-resistant grade as the main requirements.
  The macroscopic properties of insulation material tube such as electrical properties, thermal properties, mechanical properties, chemical resistance, weather resistance, corrosion resistance and other properties are closely related to its chemical composition and molecular structure. Inorganic solid insulation material is mainly composed of silicon, boron and a variety of metal oxides, mainly to the ionic structure, the main features of high heat resistance, the working temperature is generally greater than 180 ℃, good stability, resistance to atmospheric aging, Chemical properties and long-term under the action of the electric field aging performance; but high brittleness, low impact strength, high pressure and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is usually lower than that of inorganic materials. Contains aromatic rings, heterocycles and silicon, titanium, fluorine and other elements of the material heat resistance is higher than the general line of chain polymer materials. An important factor affecting the dielectric properties of insulating materials is the strength of the polar and the content of polar components. The dielectric constant and dielectric loss of the polar materials are higher than those of the non-polar materials, and the impurity ions are easily adsorbed to increase the conductivity and reduce the dielectric properties. Therefore, in the insulation material manufacturing process should pay attention to clean, to prevent pollution. Capacitor dielectrics require high dielectric constants to increase their specificity.

At present, the market of anti static plastic sheet is divided into two categories: natural muscovite paper, natural phlogopite paper, synthetic fluoride mica paper.
  Three kinds of mica paper in 500 ℃ below a small amount of material decomposition, weight loss rate are below l ‰; when the natural muscovite paper heated to 550 ℃ or more, natural geranium paper heated to 850 ℃ above a large number of structural water Decomposition, the synthesis of fluoride gold phenolic paper sheetr heated to l050 ℃ above, fluoride is also a large number of release. There is a large number of substances decomposed, their flame retardancy, pressure drop sharply, so the natural use of natural muscovite paper temperature of 550 ℃, natural geranium paper maximum temperature of 850 ℃, and Taiwan into fluorophlogopite The maximum temperature of the paper is 1 050 ° C.
  China's fire cable sub-A, B two categories, Class A cable maximum temperature requirements for the 950 ~ 1 000 ℃, B class cable maximum temperature requirements of 750 ~ 800 ℃, for the above reasons, the manufacture of fire cables used mica The band can only be made of natural geranium paper or synthetic fluorine mica paper.

The quality of anti static plastic sheet itself also directly affects the application performance of mica, mica tape mica paper to have a good permeability, high tensile strength and good density, in addition, 6 thick thickness of the mother paper should be uniform The As the mica paper in the small mica between the adhesion force is very small, the production of mica plate is a glue with glue to improve the adhesion between the small mica, so when the mica paper penetration is poor In the production of mica plate process, the mica paper itself to receive a certain tension, when the tensile strength is too low, the mica paper (mica paper), the mica paper is not enough, the mantle board will be layered, the quality does not meet the requirements; It is necessary to crack, or even break, so that the mica board fire, insulation greatly reduced. In general, when the pe mica tape thickness is certain, the more dense mica paper, the production of mica board fire, the better insulation. When the mica paper thickness is not uniform, less than the standard thickness of the place, the mica plate fire resistance, insulation corresponding to worse; higher than the standard thickness of the place, glue is not easy to soak, even if soaked, mica tape is not easy Dry, because for a certain thickness of mica paper, in the production process of its heating temperature and heating time is fixed, which resulted in the mica board local stratification, affecting the mica plate product quality;

Dry-type power transformers are based on the principle of electromagnetic induction manufacturing electrical equipment, so have the ability to efficiently use the electromagnetic induction of the core and winding. Oil-immersed transformers are mainly composed of iron core, group, heat resistant tape, fuel tank and so on. Due to the difference in structure, the dry-type power transformer has no fuel tank, mainly composed of iron core, coil, insulation material and related accessories.
 At present, dry-type power transformers are mainly epoxy resin (including pouring and around the package). The early immersion type is changed from oil change, and the high voltage winding is usually the cake winding. Epoxy resin type dry type transformer adopts high-voltage winding and adopts the layer winding and pours. The low-voltage winding adopts spiral winding and pouring and box type Winding. The type of dry-type power transformers in the external structure of the larger differences, while the core structure is basically the same.

High temperature mica plate (insulation board) those advantages

The product was silver-white, temperature level: continuous use conditions, temperature 500 ℃, intermittent conditions of use temperature 850 ℃;
• HP-8 hardness high temperature hot metal mother board (mica tape for cable). The product was golden, temperature level: continuous use under the conditions of temperature 850 ℃, intermittent use under conditions of temperature 1050 ℃.
Excellent high temperature performance, the highest temperature up to 1000 ℃, high temperature insulation materials, has a good price.
• Excellent electrical insulation performance, withstand voltage breakdown of up to 20KV / mm.
• Excellent bending strength and processing performance, high bending strength, and excellent toughness, with the punching can be processed to a variety of shapes without stratification. Excellent environmental performance, non-asbestos, less heat when heated and small odor, or even smoke-free

Explain what the role of insulating material

What is the effect of epoxy fiberglass tube? Do you know? For this question we give a more detailed explanation; hope for everyone can help.
The role of insulating material is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and compressive strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics. According to the above requirements, commonly used insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.
Electrician commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for motors, electrical insulation winding, switch the bottom plate and insulators. Organic insulating materials are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire wound insulation and so on. Mixed insulation materials for the above two kinds of materials through the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.

What is the quality of insulation materials on the electrical equipment have any effect?

With the rapid development of domestic industrial industry, many manufacturers of electrical equipment requirements are getting higher and higher. For many electrical equipment, the insulation transformer pressboard is one of the indispensable materials. It is directly related to the life of electrical equipment, but also plays a role in promoting the technical improvement of equipment. To improve the performance of electrical equipment, to strengthen the technical improvement of insulating materials is indispensable.
In the industry norms are not perfect today, there are still many manufacturers qualified to meet the requirements. Which led to a lot of production of insulating materials, product quality unqualified, and some even mixed with impurities, the use of the entire equipment have affected. In the manufacture of insulating materials, material composition, formulation, process, storage, use and so on affect the service life. In the use of a variety of electrical equipment, should be time through a dedicated instrument for performance testing to ensure the quality of the use of the product. At the same time, in the course of the use of insulating materials, aging is also the key to control the operation of equipment. So also need to adjust the environmental conditions, so that it meets the real operating state.

Insulation board quality is good or bad identification

As the state of environmental requirements become more stringent, many companies on the application of the insulation board more and more widely, it is because of this reason many companies for the interests of money, many companies are selling poor insulation board, we In the procurement time do not know how to identify the insulation cable paper is good or bad, here we teach you how to identify the quality of insulation board how to distinguish between good and bad!
   First: the level of the more obvious level
    Insulation board of the more obvious description of the quality of the insulation board qualified, he has a feeling that this insulation board quality is qualified.
   Second: from the analysis of the composition of the point of view to deal with product quality problems
   Refer to the function of the supplied sample to improve your product, and may improve the function according to the parameter requirement, such as elongation, tear strength, anti-aging function and so on. The problem of the quality of the mica insulation tape, such as the frosting, the frosting and the vulcanization time, is studied from the viewpoint of the analysis component, and the problem is raised from the viewpoint of the composition of the sample and the auxiliary agent.

Is the rubber insulation board an epoxy insulated board?

Rubber electrical insulating board is made of rubber and glass fiber and other materials from the processing, epoxy resin is an epoxy resin with glass fiber material through high temperature and high pressure made of insulation board or epoxy insulation board. We usually refer to the insulation board with epoxy board, epoxy resin insulation board.
Epoxy resin board with strong adhesion, strong shrinkage, mechanical properties, high dielectric properties, chemical stability, dimensional stability, resistance to mold, etc., is excellent quality mechanical properties of the epoxy board. As an epoxy board of another epoxy glass fiberboard, we can also be called epoxy phenolic laminated glass cloth plate, model 3240, on the type of provisions, we briefly introduce the first 3 on behalf of laminated products, Winding products, vacuum pressure impregnated products. The second 2 represents the inorganic bottom of the laminate. The third bit 4 represents the temperature index level of 155 degrees. The fourth digit represents the product variety code.
Another type of epoxy board is called fiberglass board, which is composed of glass fiber material and high heat resistance of the composite material, does not contain harmful asbestos ingredients. Its electrical insulation performance is stable, smoothness, smooth surface, no pits, thickness tolerance exceeds the standard, suitable for high-performance electronic insulation requirements of the product, such as FPC reinforcement board, precision tour round wheel, electrical equipment isolation Board, insulation pads, transformers insulation, electrical insulation, electronic switch insulation board, and so on.

What are the performance characteristics of the 3240 epoxy board?

Many friends in the industry often consult the problem. Today, I mainly share with you my personal point of view. Interested and then look down.
1, in various forms. Various resins, curing agents, modifier systems can be adapted to a wide range of applications to the requirements of the form, ranging from very low viscosity to high melting solids.
2, easy to cure. Choose a variety of curing agent, epoxy resin system can be almost 0 ~ 180 ℃ temperature range curing.
3, strong adhesion. The presence of polar hydroxyl and ether linkages inherent in the molecular chain of the mica insulation sheets gives it a high adhesion to various substances. Epoxy resin curing low shrinkage, the resulting internal stress is small, which also helps to improve the adhesion strength.
4, low shrinkage The reaction of the epoxy resin and the curing agent used is carried out by a direct addition reaction or by ring-opening polymerization of an epoxy group in the resin molecule without the presence of water or other volatile by-products. They exhibit very low shrinkage (less than 2%) compared to unsaturated polyester resins and phenolic resins during curing.

How to distinguish insulation board insulation is good or bad?

insulation transformer pressboard, also known as epoxy resin insulation board, he is a relatively common insulating rubber products, it has a good insulation properties, how to identify the insulation board insulation performance?
1, breakdown voltage: breakdown voltage level is usually used to determine the insulation properties of rubber insulation products, an important standard, is an indispensable technical parameters. Each designer in the design of the time to pay attention to the breakdown of the voltage problem, this is not only the impact of insulation performance, but also insulation board product safety and the use of an important standard of stability.
2, the dielectric constant The dielectric constant of the word is more professional, it is a measure of the conductivity of a parameter, the greater the dielectric constant of the same conditions under the conditions of the current will be more, the corresponding insulation of this material The worse the performance. Therefore, in order to ensure that the insulation plate can have good insulation, to maintain its dielectric constant to a certain extent is very important.
3, resistance: This is used to determine the insulating plate electrical insulating board performance of one of the main indicators, insulation board insulation performance also need to identify it through. For the insulation product volume is strictly defined, according to the different needs of use, have different volume standards. In general, the larger the volume resistance, the greater the resistance of the surface.

The role of epoxy resin insulation board?

Epoxy insulation board is a kind of insulating material, he is generally used in transformers, electrical and other electrical equipment, mainly play a part of the separation of the role of separation. Therefore, the epoxy resin insulation board first has a high insulation and compressive strength, and can avoid the occurrence of leakage, breakdown and other accidents, followed by good heat resistance, can be 180 degrees in the case of high temperature deformation. In addition, we should also have good thermal conductivity, lightning protection, mechanical strength and other characteristics, we concluded that the epoxy resin laminated wood board has the following characteristics: he has the insulation strength, tensile strength, specific gravity, expansion coefficient And other characteristics.

We are usually referred to as the fire resistant cables tape is divided into epoxy insulation board 3240 insulation board FR-4 insulation board each product of different models of their different grades, we said the insulation board is divided into several grades refers to Insulation board insulation temperature, insulating material insulation and temperature are closely related. The higher the temperature, the worse the insulating properties of the insulating material. To ensure the bakelite electrical insulation board strength, each insulation material has a suitable maximum allowable operating temperature, below this temperature, can be used for long-term safety, more than this temperature will quickly aging. According to the degree of heat, the insulation material is divided into Y, A, E, B, F, H, C and other levels. For example, the maximum allowable operating temperature of Class A insulation is 105 ℃. Generally, the distribution transformer and the insulating material in the motor are mostly A grade, such as epoxy resin insulation board and so on.

How is the insulation board insulated?

electrical insulating board is not only used in power, but also applied to other areas, such as: high-speed rail, transformers, power distribution cabinets, banks, epoxy resin insulation board is made of glass fiber and insulation materials, There are other materials can not match the superiority.
First: the insulation plate has a good wayward, in the course of the use is not easy to break.
Second: compressed laminated wood has good insulation and high temperature resistance.
Finally: the insulation board has played a role in protecting the safety of the staff.

garolite g7 is a material that can prevent current from passing through. Its resistivity is very high, usually in the range of 10 ^ 9 ~ 10 ^ 22Ω · m. Breakdown voltage and electrical strength is one of the main indicators affecting the performance of g10 fiberglass tube, the following for everyone to introduce:
In a strong electric field under the destruction of insulating materials, loss of insulation into a conductive state, known as breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). Electrical strength is the breakdown of the voltage between the voltage and the two electrodes subjected to the applied voltage under the specified conditions, that is, the breakdown voltage per unit thickness. For insulating materials, the general breakdown voltage, electrical strength of the value of the higher the better.

unsaturated polyester glass mat sheet are also known as laminates, and there are many types of insulating laminates, including phenolic cotton laminates, epoxy glass cloth laminates, insulating paperboard, silicone glass cloth laminates, melamine glass cloth laminates, Glass cloth laminates, bismaleimide glass cloth laminates, polyimide glass cloth laminates, graphite glass cloth laminates, high strength epoxy glass cloth laminates, etc., referred to as insulation board.

The role of GPO3 sheet is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and compressive strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and ease of processing and so on. According to the above requirements, commonly used insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.
Electrician commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed fire resistant cables tape. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for motors, electrical insulation winding, switch the bottom plate and insulators. Organic insulation materials are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire wound insulation and so on. Mixed insulation materials for the above two kinds of materials through the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.

Development Trend of Insulating Materials

The development and development of mica cable tape is one of the key factors affecting the development of electrical technology. From the future trend, the requirements of the development of high pressure, heat insulation, impact resistance, environmental insulation, composite insulation, corrosion resistance, water, oil, cryogenic, radiation and flame retardant materials, research and development of environmentally friendly energy-saving materials. The focus is on the development of high-voltage generators for high-pressure epoxy mica insulation systems, such as FR5, phlogopite, etc .; small and medium-sized motor F, H-class insulation series, such as unsaturated polyester resin glass felt board; High-performance insulating oil; synthetic paper composite insulation; flame-retardant rubber and plastic materials and surface protection materials, and to actively promote the traditional use of sulfur hexafluoride gaseous medium; Replacement of insulation materials for electrical equipment.
Molding and extrusion process products to enhance the performance and standards will certainly greatly reduce the production costs of laminates, will gradually eliminate low-end electrical compressed laminated wood, will produce a new resin products, so that insulation materials Grade application market identified in the F-class H-class C-level market.

Insulation material performance

Different electrical equipment requirements for the performance of insulating materials are focused. High-voltage electrical equipment such as high-voltage motors, high-voltage cables and other insulation material tube require high breakdown strength and low dielectric loss. Low-voltage electrical appliances, such as mechanical strength, elongation at break, heat-resistant grade as the main requirements.
The macroscopic properties of insulating materials such as electrical properties, thermal properties, mechanical properties, chemical resistance, weather resistance, corrosion resistance and other properties are closely related to its chemical composition and molecular structure. Inorganic solid insulation material is mainly composed of silicon, boron and a variety of metal oxides, mainly to the ionic structure, the main features of high heat resistance, the working temperature is generally greater than 180 ℃, good stability, resistance to atmospheric aging, Chemical properties and long-term under the action of the electric field aging performance; but high brittleness, low impact strength, high pressure and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is generally lower than that of inorganic materials. Contains aromatic rings, heterocycles and silicon, titanium, fluorine and other elements of the material heat resistance is higher than the general line of chain polymer materials.
An important factor affecting the dielectric properties of mica insulation tape is the strength of the polar and the content of polar components. The dielectric constant and dielectric loss of the polar material are higher than those of the non-polar material, and the impurity ions are easily adsorbed to increase the conductivity and reduce the dielectric properties. Therefore, in the insulation material manufacturing process should pay attention to clean, to prevent pollution. Capacitor dielectrics require high dielectric constants to increase their specificity.

Insulation material - 3240 epoxy board

Epoxy resin is also known as epoxy glass fiber reinforced plastic, epoxy mica tape for cable, model 3240, epoxy resin is a molecule refers to the molecule contains two or more epoxy groups of organic polymer compounds, in addition to individual , Their relative molecular mass is not high. The molecular structure of the epoxy resin is characterized by the presence of a reactive epoxy group in the molecular chain, and the epoxy group may be at the terminal, intermediate or cyclic structure of the molecular chain. As the molecular structure contains lively epoxy groups, so that they can be associated with a variety of types of curing agent cross-linking reaction to form insoluble, non-melting with three-way network structure of the polymer.

Promote the development of insulating materials industry is imperative

polyimide glass fiber as a basic material, a wide range of applications, such as the lifeline of the national economy as the power industry, its development and high-performance insulation materials are closely related. Insulation material is to ensure that electrical equipment, especially power equipment can be reliable, lasting and safe operation of the key material, its level will directly affect the power industry development level and quality of operation. With the economic development, China's transmission line of the highest voltage level will be increased from 500kV to 750kV or 1000kV, and the transmission line voltage level for each step up, power equipment paper banding tape system must be improved accordingly. There is no high-performance insulation materials to ensure that from the power generation, power transmission to all the electricity system is likely to occur local power grid instability, serious will make the entire power grid paralyzed. Therefore, in the protection of power generation, power transmission, electrical equipment operation reliability and stability, the advanced nature of insulation, stability has a very important significance. For the defense, the military equipment in the power, control, communications, radar and other systems need insulation materials, to develop new military equipment, must also have a new type of insulating material for the pilot. Such as nuclear submarines require the use of anti-salt spray, moisture, mildew, radiation-resistant insulation materials, such as aerospace aircraft need high dimensional stability, low temperature, radiation-resistant insulation materials. If the insulating material can not meet the harsh conditions of these harsh use of the environment, will lead to military equipment in many important systems can not function properly.
Therefore, the insulation material to improve the overall level of national industry, promote the stable and rapid development of national economy plays a very important role. Dongsheng insulation materials is committed to the production of high-tech insulating materials, research and development and sales, will help the national economy lifeline of the paper industry to a new level.

A material that isolates the charged body from other parts of the electrical equipment. Commonly used solid materials are insulating sleeves. Insulating paper, laminates, rubber, plastic, paint, glass, ceramics, mica and so on. Commonly used liquid materials are transformer oil. Gaseous materials in the air, nitrogen, sulfur hexafluoride and other use more. Society is using more insulating materials. Use and industry and life, the more common is the "glass cloth tape", "plastic", ceramics and so on. Are all insulating materials.
Insulation material: Resistivity of 109 ~ 1022 Ω · Cm of the material composition of the material in the electrical technology known as insulating materials, also known as dielectric. Simply means that the charged body and other parts of the material isolation. insulation materials on the DC current has a very large resistance, under the action of DC voltage, in addition to a very small surface leakage current, in fact, almost non-conductive, and for the AC current capacitor current through, but also that is not Conductive. The greater the resistivity of the insulating material, the better the insulation performance. [1] Insulating material is an indispensable material in electrical products.
In general, electrical and electrical equipment are made of conductive materials, magnetic materials, insulating materials and structural materials. In addition to insulating materials, the other is metal materials. Motor, electrical appliances in operation, inevitably subject to temperature, electricity, mechanical stress and vibration, harmful gases, chemicals, moisture, dust and radiation and other factors. These factors have a more pronounced effect on insulating materials than other materials. It can be said that the insulation material is more sensitive to these factors, easy to deteriorate deterioration, resulting in damage to electrical equipment. So the insulation material is to determine the motor, electrical operation of the key material reliability. With the continuation of running time, insulation materials must be aging, and its aging faster than other materials, so the choice of motor, electrical life of the key material is insulating material.

flexible laminates is one of the key factors to determine the technical and economic indicators of motor and electrical appliances. One of the important technical and economic indicators of the motor is the mass power ratio, that is, the kg / kw value. Reduce the ratio, the motor has important significance. It is reported that from 1900 to 1967, 1hp (0.75kW) motor quality from 40kg to 10kg, has now been reduced to 6kg / kW level. An important reason for this change is the use of insulating materials with high heat resistance. Reduce the kg / kW value can save a lot of metal materials, reduce motor costs.
Such as a A-class (105 ℃) motor with H-class (180 ℃) insulation, can reduce the volume of 30% to 50%, saving copper 20%, silicon steel sheet 30% to 50%, cast iron 25%. Of course, using the same model machine, with a higher temperature index insulation material, can improve the power or extend the life of the motor. From the electrical, electrical products, the cost of the situation, the cost of insulating materials in about half of these are the insulating materials in the electrical, electrical industry, the status and role.