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Epoxy adhesive glass powder mica tape

A technology of glass powder and mica tape, applied in the direction of mica, quartz/glass/glass enamel, insulator, etc., can solve the problems of unreliable, large insulation thickness, low mica content, etc., and achieve good compatibility and wrapping coils Good fit and softness

Active Publication Date: 2013-01-09
浙江荣泰电工器材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many disadvantages, such as: compared with less glue system, it has lower mica content, thicker insulation, poor air permeability, and there is a certain small air gap in the insulation treated by VPI process. The main insulation performance assessment of high-voltage motors cannot stably meet the requirements of instantaneous power frequency breakdown voltage ≥ 70KV stipulated in the standard of "JB / T50133-1999, Product Quality Classification of Medium-sized High-voltage Motors with Less Glue and Full Immersion Coils"

Method used

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  • Epoxy adhesive glass powder mica tape
  • Epoxy adhesive glass powder mica tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Preparation of adhesive

[0022] 20 parts of bisphenol A epoxy resin (brand name is E44), 10 parts of novolac epoxy resin (brand name is F44), 25 parts of bismaleimide tung oil anhydride, 5 parts of methyl tetrahydrophthalic anhydride, aluminum triacetylacetonate 0.3 parts, 20 parts of toluene, 20 parts of acetone. Mix together evenly and serve.

[0023] 2. Fabrication of mica tape

[0024] (1) Use two layers of non-alkali glass cloth for electricians (quantitatively 18g / m2), and glue the two sides of the glass cloth by dipping at room temperature;

[0025] (2) The quantitative will be 130g / m 2 506-D mica paper is laminated between two layers of glued glass cloth to obtain a three-in-one composite;

[0026] (3) Bake the obtained three-in-one compound at a temperature of 100-130°C for about 10 minutes, wind up and cut to obtain the epoxy medium-glue glass powder mica tape of this example. Its technical indicators are shown in Table 1.

Embodiment 2

[0028] 1. Preparation of adhesive

[0029] 19 parts of bisphenol A epoxy resin (brand name DER337), 11 parts of novolak epoxy resin (DER438), 25 parts of tung oil anhydride, 5 parts of methyl tetrahydrophthalic anhydride, 0.2 parts of aluminum triacetylacetonate, organic rare earth metal neodymium Nd 0.3 parts of salt, 20 parts of toluene, and 20 parts of acetone. Mix together evenly and serve.

[0030] 2. Fabrication of mica tape

[0031] (1) Use two layers of non-alkali glass cloth for electricians (quantitatively 18g / m2), and glue the two sides of the glass cloth by dipping at room temperature;

[0032] (2) The quantitative will be 140g / m 2 507 mica paper is pasted between two layers of glued glass cloth to obtain a three-in-one composite;

[0033] (3) Bake the obtained three-in-one compound at a temperature of 100-130°C for about 10 minutes, wind up and cut to obtain the epoxy medium-glue glass powder mica tape of this example. Its technical indicators are shown in Ta...

Embodiment 3

[0035] 1. Preparation of adhesive

[0036] 16 parts of bisphenol F epoxy resin (brand is YDF170), 4 parts of bisphenol A epoxy resin (brand is EP1001), 10 parts of novolak epoxy resin (brand is DER431), alicyclic epoxy resin (brand is DER431) 2 parts of ERRA4211), 25 parts of bismaleimide tung oil anhydride, 5 parts of methyl hexahydrophthalic anhydride, 0.1 part of aluminum triethylacetoacetate, 0.4 parts of organic rare earth metal neodymium Nd salt, 20 parts of toluene, 20 parts of acetone . Mix together evenly and serve.

[0037] 2. Fabrication of mica tape

[0038] (1), use two layers of electrician's non-alkali glass cloth (quantitatively 18g / m2), adopt the mode of dipping glue to glue the both sides of glass cloth at normal temperature;

[0039] (2) Paste the 140g / m2507 mica paper paper between the two layers of glued glass cloth to obtain a three-in-one compound;

[0040] (3) Bake the obtained three-in-one compound at a temperature of 100-130° C. for about 5-10 min...

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Abstract

The invention discloses an epoxy adhesive glass powder mica tape, which consists of two layers of electrical alkali-free glass cloth, a mica layer and an adhesive, wherein the mica layer is arranged between the two layers of electrical alkali-free glass cloth; and the adhesive is used for adhering the electrical alkali-free glass cloth and the mica layer. The mica tape has higher intermiscibilitywith most of solvent-free impregnated resins, the condensates of the mica tape have higher room temperature dielectric loss, dielectric loss increment, thermal state dielectric loss at the temperature of 155 DEG C, breakdown voltage and other various performance indexes, and the mica tape can better meet major insulation performance guarantee test requirements of a 10.5kV F-level medium high voltage motor.

Description

technical field [0001] The invention relates to an insulating material, in particular to an epoxy medium-glue glass powder mica tape, which is suitable for the main insulation of F-class medium-sized high-voltage motors with a rated voltage below 10.5kV. Background technique [0002] With the development of motor technology, higher and higher requirements are put forward for the insulation performance of motors. Due to its unique advantages, the vacuum pressure impregnation process (VPI) has been more and more widely used. [0003] After adopting the vacuum impregnation process (VPI), there is no air gap in the insulation and the integrity is improved, which is beneficial to improve the electrical life and moisture resistance of the insulation, reduce the temperature rise of the motor, improve the operation reliability of the motor and prolong the service life; at the same time simplify The coil manufacturing process shortens the production cycle and reduces costs. The succ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/04H01B3/08H01B17/60H01B17/66
Inventor 卜一民曹万荣符开斌
Owner 浙江荣泰电工器材股份有限公司
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