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Organic silicon modified weather-resistant epoxy resin insulating material

An epoxy resin and insulating material technology, applied in the field of electrical insulating material preparation, can solve problems such as the decrease of adhesion and mechanical strength, and achieve the effects of good wettability, good manufacturability, and improved anti-aging ability.

Active Publication Date: 2021-09-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some current silicone modification methods are limited to material compatibility and the nature of the silicon bond, which may lead to a decrease in the properties of the modified material such as adhesion and mechanical strength at high temperatures. Therefore, it is necessary to select suitable modified materials and modified materials. Means to improve the comprehensive performance of silicone modified epoxy resin, and further enhance its performance

Method used

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  • Organic silicon modified weather-resistant epoxy resin insulating material
  • Organic silicon modified weather-resistant epoxy resin insulating material
  • Organic silicon modified weather-resistant epoxy resin insulating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An organosilicon-modified weather-resistant epoxy resin insulating material, consisting of the following components by weight: 100 parts of epoxy resin; 10 parts of diphenylsilanediol; 2-(3,4-epoxyhexyl ) 12 parts of ethyltriethoxysilane; 10.5 parts of tritylamine; 7.5 parts of dicyclohexylamine; 85 parts of methyltetrahydrophthalic anhydride curing agent; 0.5 part of DMP-30 accelerator; share.

[0029] figure 1 Provided is a schematic diagram of the preparation route of the first silicone-modified epoxy resin, and the implementation steps of the method are:

[0030] (1) Add 100 parts of bisphenol A epoxy resin into the reactor, stir at 600r / min, heat up to 135°C, add 1 part of dibutyltin dilaurate, add a small amount of diphenylsilanediol, and keep stirring, When it is observed that the diphenylsilanediol added in the previous batch is basically dissolved, then continue to add, add a total of 10 parts of diphenylsilanediol, and keep warm for 3.5 hours to obtain polym...

Embodiment 2

[0036] An organosilicon-modified weather-resistant epoxy resin insulating material, consisting of the following components by weight: 100 parts of bisphenol A epoxy resin; 10 parts of diphenylsilanediol; 2-(3,4-epoxy 14 parts of hexyl) ethyl triethoxysilane; 12 parts of tritylamine; 8 parts of dicyclohexylamine; 85 parts of methyltetrahydrophthalic anhydride curing agent; 0.5 parts of DMP-30 accelerator; 1 part of dibutyltin; 0.3 part of barium hydroxide monohydrate.

[0037] Figure 2-3 Provided is a schematic diagram of the preparation route of the second silicone-modified epoxy resin, and the implementation steps of the method are:

[0038] (1) Add 100 parts of bisphenol A epoxy resin into the reactor, stir at 600r / min, heat up to 135°C, add 1 part of dibutyltin dilaurate, and then add a small amount of diphenylsilanediol, when observed The diphenylsilanediol added in the previous batch was basically dissolved and then continued to be added, a total of 5 parts of diphenyl...

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Abstract

The invention discloses an organic silicon modified weather-resistant epoxy resin insulating material, and belongs to the technical field of electrical insulating material preparation, wherein the insulating material is prepared by processing the components described in the claim 1. A processing method comprises the step 4 or the step 5. More stable chemical bonds with silicon atoms as the center are introduced, so that the chemical stability of the material is improved, the capability of the material for resisting chemical reactions such as thermal decomposition, oxidation and hydrolysis which enable macromolecular long chains to break in high-temperature, high-humidity and ultraviolet environments is improved, and the anti-aging capability of the material is improved; due to the hydrophobicity of introduced chemical bonds, the water absorption of the material is reduced, and the water invasion and diffusion speed is reduced; meanwhile, an introduced alicyclic structure and an introduced benzene ring structure are relatively high in stability and relatively large in steric hindrance, so that relatively good mechanical properties can be kept at a high temperature while relatively strong oxidation resistance is ensured; and due to the reserved hydroxyl, the wettability of the modified epoxy resin is relatively good, and relatively good manufacturability can be realized.

Description

technical field [0001] The invention belongs to the technical field of electrical insulating material preparation, and in particular relates to an organosilicon-modified weather-resistant epoxy resin insulating material. Background technique [0002] Epoxy resin is widely used in the field of electrical insulation due to its excellent electrical insulation performance, adhesion, chemical corrosion resistance, and easy processing. Compared with traditional inorganic insulating materials, epoxy resin is more susceptible to conditions such as humidity, heat, ultraviolet rays, and electric fields, and gradually deteriorates, leading to insulation failure and accidents. Therefore, improving the weather resistance of epoxy resin and increasing the stability of insulating materials under harsh conditions has a positive effect on the economical operation of power systems. [0003] Organosilicon compounds are often used as modifiers of epoxy resins due to their good high and low tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L63/00C08K5/5419C08K5/5435
CPCC08K5/5419C08K5/5435C08L63/00
Inventor 王永强曾卓商静王子正
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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