Epoxy system for bio-based electric insulation and preparation method of epoxy system

An electrical insulation and epoxy system technology, applied in the field of bio-based electrical insulation epoxy system and its preparation, can solve the problems of high cost, long production cycle of tung oil, limited application scope of tung oil acid anhydride insulation material system, etc., and achieves low cost , The effect of low production cost and excellent comprehensive performance

Active Publication Date: 2017-06-20
广州仑利奇合成树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cycle of tung oil is long and the cost is high, which limits the application range of tung oil anhydride insulation material system

Method used

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  • Epoxy system for bio-based electric insulation and preparation method of epoxy system
  • Epoxy system for bio-based electric insulation and preparation method of epoxy system
  • Epoxy system for bio-based electric insulation and preparation method of epoxy system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Mix 2 parts of benzoyl peroxide (BPO) and 98 parts of epoxy-based soybean oil, vacuumize, heat to 80°C in a nitrogen atmosphere, react for 2 hours, and cool to 40°C to prepare epoxy-based soybean oil Oligomers, wherein the resulting oligomers have an iodine value of less than 1;

[0052] 10g of castor oil was added to 89.8g of bisphenol epoxy resin DER331, and then 0.02g of 2-phenylimidazole solution (30%) was added. Then the temperature was raised to 140° C., and the reaction was carried out for 2 hours. Cool to 100 degree then, add above-mentioned weight 40g above-mentioned epoxy base soybean oil oligomers of above-mentioned preparation to adjust viscosity, cool to normal temperature stand-by.

[0053] At 140°C, react 15 parts by mass of castor oil with 25 parts by mass of tetrahydrophthalic anhydride for two hours, cool to 100°C and add 50% by mass of methyltetrahydrophthalic anhydride relative to the reaction product to adjust the viscosity, and add the relative re...

Embodiment 2

[0056] Mix 1 part of azobisisobutyronitrile and 99 parts of epoxy-based castor oil, vacuumize, heat to 95°C in a nitrogen atmosphere, react for 2 hours, and cool to 40°C to prepare epoxy-based castor oil oligomerization Object, wherein, the iodine number of obtained oligomer is lower than 1;

[0057] Add 15g of castor oil to 85g of bisphenol epoxy resin DER331, then add 0.05g of sodium methylate methanol solution (50%), react at 160°C for 3 hours, then cool to 120°C, add 30g of the above epoxidized castor oil to adjust the viscosity , cooled to room temperature for later use.

[0058] At a temperature of 150°C, mix 20 parts by mass of cardanol and 80 parts by mass of phthalic anhydride, and react until the acid value of the system reaches 3 mg KOH / g. After cooling to room temperature, add 1 mass % of N-methylimidazole relative to the reaction product , stirred for 30 minutes, cooled to room temperature for later use. Then mix the above bio-based epoxy resin and anhydride cur...

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Abstract

The invention discloses an epoxy system for bio-based electric insulation and a preparation method of the epoxy system. Vegetable oil modified epoxy resin and an anhydride curing agent containing one or more groups of an epoxy group, a hydroxyl group, a carboxyl group and a phenolic hydroxyl group are used respectively to prepare the epoxy system for bio-based electric insulation with low cost, good product stability, wide application range, simple technology, no pollution, no wastewater, excellent mechanical properties, improved glass transition temperature and good crack resistance.

Description

technical field [0001] The invention relates to the field of preparation of epoxy resin for electrical insulation, in particular to a bio-based epoxy system for electrical insulation and a preparation method thereof. Background technique [0002] The rapid development of the world economy and the continuous intensification of human activities have led to the unsustainable state of increasingly scarce oil resources and deteriorating natural environment. With people's increasing awareness of environmental protection and sustainable development, countries around the world have gradually begun to study and use green bio-based materials to gradually replace old petroleum-based materials in order to reduce human dependence on petroleum, a non-renewable resource. [0003] As one of the most widely used thermosetting resins, epoxy resin plays an important role in the insulation of electronic components and electrical equipment. However, the main species of epoxy resin is bisphenol ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/42C08G59/14C08L63/00
CPCC08G59/1438C08G59/4207C08G59/4223C08L63/00
Inventor 莫海林杨国俊
Owner 广州仑利奇合成树脂有限公司
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