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A kind of epoxy resin composition with high heat resistance and high toughness and preparation method thereof

A technology of epoxy resin and composition, applied in the field of high heat resistance and high toughness epoxy resin composition and preparation thereof, can solve the problem that epoxy resin cannot significantly improve heat resistance at the same time, and achieves low cost and improved resistance. Thermal, simple process effect

Active Publication Date: 2011-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The inventors have found through research that in the epoxy resin system using an acid anhydride curing agent, the epoxy resin can be modified with nitrile rubber, and the nitrile rubber can replace the curing accelerator, and it can also significantly improve the toughness of the epoxy resin. It can also greatly improve the heat resistance, thus overcoming the problem that the rubber toughened epoxy resin cannot significantly improve its heat resistance at the same time

Method used

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  • A kind of epoxy resin composition with high heat resistance and high toughness and preparation method thereof
  • A kind of epoxy resin composition with high heat resistance and high toughness and preparation method thereof
  • A kind of epoxy resin composition with high heat resistance and high toughness and preparation method thereof

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Effect test

Embodiment 1

[0032]Mix 100 grams of epoxy resin prepolymer (Sinopec Asset Management Co., Ltd. Baling Petrochemical Branch, CYD-128) with 25 grams of fully vulcanized nitrile powder rubber particles (Beijing Research Institute of Chemical Industry, VP401, gel content 91 %, average particle size 100nm) mixed, and ground three times with a three-roll mill to make a mixture of epoxy resin prepolymer and fully vulcanized nitrile powder rubber particles. Then put 75 grams of the ground mixture and curing agent methyltetrahydrophthalic anhydride (Guangdong Shengshida Science and Trade Co., Ltd.) into a three-necked bottle, stir and vacuumize at 90°C for 30 minutes, and then pour the mixture until it has been preheated. Pre-cure at 110°C for 2 hours in a polytetrafluoroethylene mold at 110°C, then raise the temperature to 130°C and cure for 12 hours to obtain a cured product, which is cut by a milling machine and tested for various properties. The test results are shown in Table 1.

Embodiment 2

[0034] Change fully vulcanized nitrile butadiene powder rubber particle into 20 grams by 25 grams, all the other conditions are with embodiment 1.

Embodiment 3

[0036] Change fully vulcanized nitrile butadiene powder rubber particle into 12 grams by 25 grams, and all the other conditions are with embodiment 1.

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Abstract

The invention relates to an epoxy resin composition and preparation thereof. The composition comprises the following blended components : 100 weight parts of epoxy resins; 30 to 120 weight parts of anhydride curing agents; 1 to 45 weight parts of powdery nitrile rubbers; no curing accelerator is included in the composition. The composition of the invention has both higher heat resistance and higher toughness, and is suitable for the fields which require high heat resistance, such as circuit board, electronics packaging, binder and electrical insulating coating etc..

Description

technical field [0001] The present invention relates to a kind of modified epoxy resin, more specifically, it relates to a kind of epoxy resin composition with high heat resistance and high toughness modified by nitrile rubber and its preparation method. Background technique [0002] Since its commercialization in 1946, epoxy resin has been widely used in the fields of machinery, electricity, electronics and aerospace because of its comprehensive properties such as high mechanical strength, good insulation and excellent solvent resistance. However, pure epoxy resin is a brittle material, which limits its applications. Although the toughness of epoxy resin can be improved by physical or chemical methods, it often makes its heat resistance worse. [0003] In toughening modified epoxy resin technology, adding modifier is the most effective and economical toughening method. The early modifiers were plasticizers (phthalates and phosphoric acid esters) and softeners (polyglycidy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L9/02C08G59/42
CPCC08G59/42C08L63/00C08L9/02
Inventor 戚桂村乔金樑张晓红高建明宋志海李秉海蔡传伦张红彬王亚赖金梅黄源
Owner CHINA PETROLEUM & CHEM CORP
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