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Lignin epoxy resin/carbon fiber reinforced composite material

A technology for reinforcing composite materials and plain epoxy resin, applied in the field of composite materials, can solve the problems of high cost and restrict the development of composite materials, and achieve the effects of high price, good support and reinforcement, and reasonable utilization

Inactive Publication Date: 2019-06-21
上海汉禾生物新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above method, in order to make the material achieve the required strength, a large amount of carbon fiber must be used, and the high price of carbon fiber restricts the development of the composite material

Method used

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  • Lignin epoxy resin/carbon fiber reinforced composite material
  • Lignin epoxy resin/carbon fiber reinforced composite material
  • Lignin epoxy resin/carbon fiber reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0037]Add 90g of ethylene glycol into the reaction vessel, add 62g of enzymatic lignin and 90g of maleic anhydride under stirring conditions, then add 10g of 50wt% aqueous sulfuric acid as a catalyst, stir and mix thoroughly, and react at 140°C for 4 hours, About 240 g of oil were obtained. Then add 480g of ethylene glycol diglycidyl ether, continue the reaction at 100°C for 2 hours, cool to room temperature, and obtain about 720g of viscous liquid, which is the product lignin epoxy resin, with a viscosity of 9000-11000 and an epoxy value of 0.41~0.43.

preparation example 2

[0039] Add 90g propylene glycol in the reaction vessel, add 62g enzymatic lignin under stirring condition, 1144g phthalic anhydride, then add 10g 55wt% sulfuric acid aqueous solution as catalyst, stir and mix fully, react at 130 ℃ for 5 hours, get Approx. 296g oil. Then add 596g of propylene glycol diglycidyl ether, continue to react at 100°C for 2 hours, and cool to room temperature to obtain about 888g of viscous liquid, which is the product lignin epoxy resin. Its viscosity is 8000-11000, and the epoxy value is 0.42~0.44.

preparation example 3

[0041] Add 136g of butanediol in the reaction vessel, add 68g of enzymatic lignin and 102g of glutaric anhydride under stirring conditions, then add 10g of 55wt% aqueous sulfuric acid as a catalyst, stir and mix thoroughly, and react at 120°C for 6 hours to obtain Approx. 306g oil. Then add 618g of 1,4-butanediol diglycidyl ether, continue the reaction at 90°C for 3 hours, cool to room temperature, and obtain about 924g of viscous liquid, which is the product lignin epoxy resin, and its viscosity is 9000-12000. The epoxy value is 0.39-0.42.

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Abstract

The invention provides a lignin epoxy resin / carbon fiber reinforced composite material. The lignin epoxy resin / carbon fiber reinforced composite material is obtained by cross-linking and solidifying lignin epoxy resin and a carbon fiber material; the carbon fiber material is enhanced by the specific enzymatic hydrolysis lignin epoxy resin; under the condition of the same use amount of the carbon fiber materials, the strength and the toughness of the obtained composite material are significantly more excellent than the data of the material using the conventional bisphenol A type epoxy resin; and under the condition that the use amount of the carbon fiber is reduced by 16.7 percent, the strength of the obtained composite material still can be higher than the level of the common bisphenol A type epoxy resin / carbon fiber composite material, negative influence on other properties of the composite material is avoided and the cost of the carbon fiber composite material is reduced; furthermore, the raw materials are more environmentally-friendly and the lignin epoxy resin / carbon fiber reinforced composite material is very suitable for industrial production and commercial popularization.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a lignin epoxy resin / carbon fiber reinforced composite material, its preparation method and application. Background technique [0002] Carbon fiber is an inorganic fiber material with a carbon content of more than 90%. It has the advantages of low density, high specific strength, high specific modulus, high temperature corrosion resistance, and chemical stability. It is widely used in aerospace, automobiles, electronics, sporting goods, Medical equipment and other fields. Carbon fiber reinforced resin matrix composite material is one of the most important application fields of carbon fiber. It refers to the use of carbon fiber and matrix resin as raw materials, which are processed into material products that can meet the requirements of use through different processing methods. The choice of matrix resin largely determines the environmental resistance and mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08J5/04C08G59/02C08G59/22C08G59/42
Inventor 谢卓方品文贾杨杰
Owner 上海汉禾生物新材料科技有限公司
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