A kind of epoxy resin composition and its preparation method and application

A technology of epoxy resin and composition, which is applied in the field of epoxy resin composition and its preparation, can solve the problems affecting the reliability of power transmission, lack of synergy between mechanical properties and electrical properties, etc., and achieve improvement of casting process and settlement phenomenon , good thermal stability

Active Publication Date: 2022-02-15
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the epoxy resin composition in the prior art, such as insufficient synergy between heat resistance, mechanical properties and electrical properties, and affecting the reliability of power transmission, thereby providing an epoxy resin composition And its preparation method and application

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  • A kind of epoxy resin composition and its preparation method and application

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Effect test

Embodiment 1

[0032] An epoxy resin composition comprising the following components: 66.6g of bisphenol A type epoxy resin, 33.4g of triphenyl glycidyl ether methane, 60g of methyltetrahydrophthalic anhydride, dimethylbenzylamine 0.3g, spherical α-Al 3 o 2 340 g of particles (the first particle fraction: the second particle fraction=7:3, the median diameter of the first particle fraction is 20, and the median diameter of the second particle fraction is 8), polybutadiene rubber particles 8g.

[0033] The preparation method of above-mentioned epoxy resin composition is as follows:

[0034] Preheat 66.6g of bisphenol A type epoxy resin and 33.4g of triphenylglycidyl ether methane in the same tank at 130°C for 4h, degas and stir for 0.5h, and spherical α-Al 3 o 2 146g of granules and 8g of polybutadiene rubber granules were added to the above-mentioned material tank, degassed and stirred for 3 hours, the above-mentioned degassed and stirred was carried out under a vacuum of 200Pa, and the s...

Embodiment 2

[0038] An epoxy resin composition comprising the following components: 66.6g of bisphenol A type epoxy resin, 33.4g of triphenyl glycidyl ether methane, 60g of methyltetrahydrophthalic anhydride, dimethylbenzylamine 0.3g, spherical α-Al 3 o 2 Particle 300g (the first particle fraction: the second particle fraction=7:3, the median diameter of the first particle fraction is 20, the median diameter of the second particle fraction is 8), fused silica powder 40g (in The position diameter is 15), polybutadiene rubber particles 8g.

[0039] The preparation method of above-mentioned epoxy resin composition is as follows:

[0040] Preheat 66.6g of bisphenol A type epoxy resin and 33.4g of triphenylglycidyl ether methane in the same tank at 130°C for 4h, degas and stir for 0.5h, and spherical α-Al 3 o 2 128g of granules, 18g of fused silicon micropowder and 8g of polybutadiene rubber granules were added to the above-mentioned material tank, and degassed and stirred for 3 hours. The ab...

Embodiment 3

[0044] An epoxy resin composition, comprising the following components: 50g of bisphenol A epoxy resin, 3,4-epoxy-6-methylcyclohexanecarboxylic acid-3′,4′-epoxy-6 - Methylcyclohexane methyl ester 50g, methyltetrahydrophthalic anhydride 47g, methylendomethylenetetrahydrophthalic anhydride 23g, dimethylbenzylamine 0.3g, spherical α-Al 3 o 2 Particle 320g (the first particle fraction: the second particle fraction=7:3, the median diameter of the first particle fraction is 20, the median diameter of the second particle fraction is 8), fused silica powder 40g (in The position diameter is 15), polybutadiene rubber particles 8g.

[0045] The preparation method of above-mentioned epoxy resin composition is as follows:

[0046] Bisphenol A type epoxy resin 50g and 3,4-epoxy-6-methylcyclohexanecarboxylic acid-3′,4′-epoxy-6-methylcyclohexanemethyl ester 50g in the same tank Preheat at 130℃ for 4h, degas and stir for 0.5h, spherical α-Al 3 o 2 150g of granules, 11g of fused silica pow...

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Abstract

The application provides an epoxy resin composition, its preparation method and application. The epoxy resin composition comprises the following components by weight: 100 parts of epoxy resin, 55-90 parts of curing agent, 0.1-0.8 parts of accelerator, 300-420 parts of inorganic filler and 4-15 parts of Elastomer particles. The epoxy resin composition provided by this application reduces the curing shrinkage rate through the high filling of inorganic fillers, reduces the thermal expansion coefficient of the cured product formed by pouring, and mixes a certain proportion of elastomer particles to reduce the brittleness of the high filling of inorganic fillers on the cured product, significantly The impact strength of the material is improved, and its anti-fatigue vibration and anti-cracking properties are enhanced without affecting the high temperature resistance of the material, and has no obvious impact on the glass transition temperature. It has good thermal stability and good electrical properties.

Description

technical field [0001] The invention relates to the field of electrical insulating materials, in particular to an epoxy resin composition and its preparation method and application. Background technique [0002] In recent years, insulators with epoxy resin as the dielectric have been widely used in the power industry, such as bushings, support insulators, contact boxes, insulating cylinders and poles made of epoxy resin on three-phase AC high-voltage switchgear Wait. Epoxy resin materials have large cohesion, strong adhesion, good flexibility, excellent thermal curing performance and stable chemical corrosion resistance. They can be made into various solid materials through vacuum casting of epoxy resin casting systems. They are mainly used in the power industry. Play a supporting and insulating role. [0003] Insulators are weak links in high-voltage equipment, and their performance directly determines the operational reliability of high-voltage equipment. With the devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L9/00C08L33/08C08L9/06C08L75/04C08K9/06C08K7/18C08K3/36C08G59/42C08G59/68
CPCC08L63/00C08G59/4215C08G59/4207C08G59/686C08L2203/20C08L2201/08C08L2312/00C08L2205/03C08K2201/003C08K2201/014C08L9/00C08K9/06C08K7/18C08K3/36C08L9/06C08L33/08C08L75/04
Inventor 尹立张翀邢照亮史晓宁杨威陈新张卓李飞颜丙越周明瑜王海田
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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