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High-toughness insulating epoxy resin cured product as well as preparation method and application thereof

A technology of epoxy resin curing and epoxy resin, applied in the field of high toughness insulating epoxy resin cured products and its preparation, can solve the problems of impact toughness, heat resistance and insulation, etc., and achieve the elimination of microporous defects , reduce the water content, reduce the viscosity of the system

Active Publication Date: 2020-06-05
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the cured epoxy resin in the prior art cannot have both impact toughness, heat resistance and insulation , so as to provide a cured epoxy resin with high toughness, good insulation and heat resistance

Method used

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  • High-toughness insulating epoxy resin cured product as well as preparation method and application thereof
  • High-toughness insulating epoxy resin cured product as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare raw materials: 50g of matrix resin, composed of Cardolite LITE2020 and tetrafunctional glycidylamine epoxy resin TT410, wherein the mass of Cardolite LITE2020 is 7% of the mass of tetrafunctional glycidylamine epoxy resin TT410; curing Methyltetrahydrophthalic anhydride 42g, accelerator dimethylbenzylamine 0.5g and toughening agent 7.5g, wherein the toughening agent is composed of cardanol glycidyl ether and nano silicon dioxide with a mass ratio of 1:1.

[0039] Preparation of matrix resin: put inactive resin Cardolite LITE2020 and tetrafunctional glycidylamine epoxy resin TT410 in a beaker and mix well;

[0040] Prepare the toughening agent: put cardanol glycidyl ether and nano silicon dioxide into the mixer, pre-mix, and stir evenly;

[0041]Preparation of epoxy resin cured product: mix matrix resin, toughening agent, curing agent and accelerator in a beaker, place in a 70°C constant temperature oil bath, stir for 10 minutes with a stirring paddle, then vacuu...

Embodiment 2

[0043] Prepare raw materials: 40g of matrix resin, composed of Cardolite NX2026 and trifunctional epoxy resin AFG-90, wherein the mass of Cardolite NX2026 is 5% of the mass of trifunctional epoxy resin AFG-90; curing agent A Base hexahydrophthalic anhydride 48g, accelerator triethanolamine 2g and toughening agent 10g, wherein the toughening agent is composed of cardanol glycidyl ether and nano rubber with a mass ratio of 3:7.

[0044] The preparation method is the same as in Example 1.

Embodiment 3

[0046] Prepare raw materials: matrix resin 58g, composed of Cardolite NX2026 and bisphenol A epoxy resin E-51, wherein the mass of Cardolite NX2026 is 10% of the mass of bisphenol A epoxy resin E-51; curing agent A 30 g of kinadic anhydride, 2 g of accelerator 2-ethyl-4-methylimidazole and 10 g of toughening agent, wherein the toughening agent is composed of cardanol glycidyl ether and nano calcium carbonate with a mass ratio of 7:3.

[0047] The preparation method is the same as in Example 1.

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Abstract

The invention provides a high-toughness insulating epoxy resin cured product as well as a preparation method and application thereof. The high-toughness insulating epoxy resin cured product comprisesthe following raw materials: matrix resin, a curing agent, a toughening agent and an accelerant, the matrix resin is a mixture of an epoxy resin and an inactive resin modifier containing a hydrophobicaliphatic chain and an aromatic ring, the toughening agent is a mixture of an active diluent and nanoparticles, andhydrogen bonds can be formed between the active diluent and the nanoparticles. Thelong hydrophobic aliphatic side chain and the aromatic ring in the inactive resin modifier can endow the product with extremely low viscosity, so that the viscosity of the epoxy resin is reduced, the compatibility between the epoxy resin and other components is improved, the flexibility is improved, excellent early water resistance, hardness performance and corrosion protection are provided, and excellent insulation and heat resistance are provided; the reactive diluent can react with the nanoparticles to form a damping branched chain and toughening suspension chain structure with the nanoparticles, so that the intermolecular distance of an epoxy resin system can be increased, and better toughness is provided.

Description

technical field [0001] The invention relates to the field of epoxy resin, and specifically relates to a high-toughness insulating epoxy resin cured product and its preparation method and application. Background technique [0002] The cured epoxy resin system is widely used in aerospace, automotive, and electrical fields due to its excellent properties such as high strength, high modulus, high heat resistance, and high insulation. Epoxy resin has excellent performance, thanks to its three-dimensional cross-linked network structure after curing, but this structure is brittle, and it is easy to cause the material failure, thereby reducing its scope of use. Therefore, it has become one of the problems to be solved urgently to toughen and modify the cured epoxy resin to improve the impact resistance of the material. At present, the toughening methods of the cured epoxy resin include polyurethane toughening, rubber toughening, and thermoplastic elastomer toughening. Toughness, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/42C08G59/50C08G59/62C08K3/26C08K3/36C08L21/00
CPCC08G59/4215C08G59/4284C08G59/621C08G59/504C08G59/5033C08K3/36C08K3/26C08L21/00C08K2201/011C08K2003/265
Inventor 杨威张卓颜丙越姜志国尹立陈新陈赟王琨边凯史晓宁李飞张翀郭安儒徐双双刘建军李成刚
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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