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Resin-rich epoxy glass powder mica tape

A technology of adhesive epoxy glass, powder mica tape, applied in mica, winding insulation materials, insulators and other directions, can solve the problems of poor quality stability of less tape, complex process requirements, large one-time investment, etc., to improve the performance of cured products, The effect of improving processing efficiency and reducing energy consumption

Active Publication Date: 2012-01-18
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

The disadvantage is that the one-time investment is large and the process requirements are complicated.
Due to the poor quality and stability of domestic few tapes, in the field of generators, only a few material factories in China can provide main insulation materials that meet this process, and most of the materials have to be imported from abroad. The cost of materials is relatively high, and it must be fully promoted. There are still some difficulties in less glue VPI technology

Method used

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  • Resin-rich epoxy glass powder mica tape
  • Resin-rich epoxy glass powder mica tape
  • Resin-rich epoxy glass powder mica tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Preparation of adhesive

[0020] 10 parts of bisphenol A epoxy resin (E44 of Blue Star Company), 5 parts of silicone-modified epoxy resin (R-33 of Jiaxing Rongtai Plastic Co., Ltd.), 15 parts of novolac epoxy resin (F44 of Blue Star Company) 20 parts, 20 parts of bismaleimide tungoleic anhydride, 10 parts of methyl hexahydrophthalic anhydride, 0.6 parts of cerium Ce salt of acetylacetonate, 20 parts of toluene, and 20 parts of acetone. Mix together evenly and serve.

[0021] 2. Fabrication of mica tape

[0022] Two layers of electrician's non-alkali glass cloth (quantitatively 20g / m 2 ), glued by scraping or dipping at room temperature, and compounded with 501 paper (quantitatively 85g / m 2 ), control the glue content between 36-42wt% to obtain a three-in-one compound, bake the three-in-one compound at a temperature of 100-130°C for about 5-10 minutes, and control the volatile matter below 1.5% , through winding and cutting, the low-temperature fast-curing epoxy g...

Embodiment 2

[0024] 1. Preparation of adhesive

[0025] With 15 parts of bisphenol A epoxy resin (DER337 of DOW company), 5 parts of epoxy resin (Jiaxing Rongtai plastic company R-3) of organosilicon modification, 4 parts of novolak epoxy resin (DER431 of DOW company), 30 parts of bismaleimide tungoleic anhydride, 6 parts of methylnadic anhydride, 0.5 parts of neodymium triacetylacetonate, 2 parts of diethoxydimethylsilane, 20 parts of toluene, and 20 parts of acetone. Mix together evenly and serve.

[0026] 2. Fabrication of mica tape

[0027] Two layers of electrician's non-alkali glass cloth (quantitatively 18g / m 2 ), glued by scraping or dipping at room temperature, and compounded with 501 paper (quantitatively 85g / m 2 ), control the glue content between 36-42% to obtain a three-in-one compound, bake the three-in-one compound at a temperature of 100-130°C for about 5-10 minutes, and control the volatile content below 1.5% , through winding and cutting, the low-temperature fast-curi...

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Abstract

A resin-rich epoxy glass powder mica tape consists of two layers of electrical alkali-free glass cloth, a mica layer and adhesive, wherein the mica layer is arranged between the two layers of electrical alkali-free glass cloth, and the adhesive is used for bonding the two layers of electrical alkali-free glass cloth and the mica layer together. The mica tape has the characteristics of decreasing the preserved molding temperature, shortening the molding temperature preservation time, greatly increasing the processing efficiency by 30 to 50 percent, shortening the motor production period, reducing energy consumption, and the like, and can better meet the requirement of the resin-rich molding production technique for large high-voltage motors and generators.

Description

technical field [0001] The invention relates to a main insulating material of a large-scale high-voltage motor and a generator, in particular to a multi-glue epoxy glass powder mica tape. Background technique [0002] In the domestic large-scale high-voltage motor and generator manufacturing industry, two different insulation manufacturing processes are mainly used, one is the traditional multi-glue molding process, and the other is the vacuum impregnation process (VPI). These two methods have their own advantages. shortcoming. [0003] The multi-glue molded insulation manufacturing process has the advantages of good size of insulating rods, high structural compactness, long-term operation test of the insulation system, and small system investment; the disadvantages are long process time, low processing efficiency, long processing cycle, and low processing time. The energy consumption is large, and the tooling mold is relatively complicated. [0004] Vacuum impregnation pr...

Claims

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Application Information

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IPC IPC(8): H01B3/04H01B17/60H01B17/66H02K3/30
Inventor 曹万荣卜一民徐黄忠曹梅盛
Owner 浙江荣泰电工器材股份有限公司
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