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Preparation method of rapid prototyping high-temperature resistant resin system for carbon fiber automobile parts

A high-temperature-resistant resin and auto parts technology, applied in the field of composite materials, can solve the problems of poor wettability of fiber preforms, short gel time, long curing time, etc., to improve latent stability, shorten molding cycle, and improve curing efficiency Effect

Active Publication Date: 2017-08-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the technical problems of the existing resin system, such as long curing time, low molding efficiency, short gel time at injection temperature, excessive viscosity growth, and poor wettability to fiber preforms, and provides a method that simultaneously satisfies Preparation method of high temperature resistant RTM epoxy resin system required by rapid curing and RTM molding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Stir and mix isophoronediamine and diethyltoluenediamine at 60°C to form a uniform and stable curing agent component, wherein the molar ratio of isophoronediamine to diethyltoluenediamine is 15:1.

[0021] (2) Heat 2-methylimidazole and n-butyl glycidyl ether to 70°C for 6 hours to prepare a modified anionic catalyst, wherein the molar ratio of active hydrogen to epoxy group is 1:0.8; the modified The anionic catalyst and glycerol are evenly stirred to obtain a catalyst component, wherein the molar ratio of the modified anionic catalyst to the chain transfer agent is 1:1.

[0022] (3) Bisphenol A type epoxy resin and novolak epoxy resin are stirred in the reaction kettle of 40 ℃ in the ratio of 6:4 by mass ratio to obtain the resin component, and the resin component, curing agent component, catalyst The components are mixed evenly to prepare a fast-curing RTM resin system, wherein the mass ratio of the resin component, curing agent component and catalyst component ...

Embodiment 2

[0025] (1) Stir and mix isophoronediamine and 3,3-diaminodiphenylsulfone at 90°C to form a uniform and stable curing agent component, in which isophoronediamine and 3,3-diaminodiphenylsulfone The molar ratio of phenylsulfone is 15:5.

[0026] (2) Heat 2-ethyl-4-methylimidazole and phenyl glycidyl ether to react at 100°C for 4 hours to prepare a modified anionic catalyst, wherein the molar ratio of active hydrogen to epoxy group is 1:1.3. Stir the modified anionic catalyst and 1,4-butanediol evenly to obtain a catalyst component, wherein the molar ratio of the modified anionic catalyst to 1,4-butanediol is 1:5.

[0027] (3) Stir the bisphenol A type epoxy resin and the bisphenol F type epoxy resin in a mass ratio of 7:3 in a reaction kettle at 70°C to obtain the resin component, and mix the resin component, curing agent The component and catalyst components were mixed uniformly to prepare a fast-curing RTM resin system, wherein the mass ratio of resin component, curing agent c...

Embodiment 3

[0030] (1) Stir and mix menthanediamine and m-phenylenediamine at 70°C to form a uniform and stable curing agent component, wherein the molar ratio of menthanediamine to m-phenylenediamine is 15:3.

[0031] (2) Heat 2-methylimidazole and allyl glycidyl ether to react at 80°C for 5 hours to prepare a modified anionic catalyst, wherein the molar ratio of active hydrogen to epoxy group is 1:1. The catalyst component obtained by uniformly stirring the modified anionic catalyst and butanediol, wherein the molar ratio of the modified anionic catalyst to butanediol is 1:3.

[0032] (3) Stir the bisphenol A type epoxy resin and the trifunctional glycidyl ester epoxy resin in a ratio of 7:3 in mass ratio to obtain the resin component evenly in a reaction kettle at 60°C, and the resin component, solidified The agent component and the catalyst component are mixed evenly to prepare a fast-curing RTM resin system, wherein the mass ratio of the resin component, curing agent component and ca...

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Abstract

The invention relates to a preparation method of a rapid prototyping high-temperature resistant resin system for carbon fiber automobile parts, and aims at solving the technical problems that an existing resin system is long in curing time, low in molding efficiency, short in gelation time at an injection temperature, too fast in viscosity increase and relatively poor in wettability on a fiber preform. The method comprises the following steps: stirring and mixing high-activity polyamine and low-activity aromatic amine to form a uniform and stable curing agent component A; heating an anionic initiator and a low molecular epoxide to prepare a modified anionic catalyst; stirring and mixing with a chain transfer agent to obtain a catalyst component B; stirring epoxy resin of different epoxy values evenly to obtain a resin component E; and mixing with the curing agent component A with the catalyst component B evenly to prepare the rapid prototyping high-temperature resistant resin system. The method can be applied to the field of preparation of carbon fiber automobile parts.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a rapid-forming high-temperature-resistant resin system for carbon fiber automobile parts. Background technique [0002] To be truly applied in new energy vehicles, electronic appliances and other fields, carbon fiber composite materials must adapt to the cost and production speed of high-volume automated production, which puts forward higher requirements for the scale, automation and rapid prototyping technology of composite materials. The RTM (Resin Transfer Molding, resin transfer molding) process can realize semi-automatic or automatic production. With its advantages of short production cycle, it will become the development direction of the future automotive CFRP molding process. The key to realizing RTM efficient molding is to develop rapid curing Resin system and its matching curing process. [0003] At present, fast-curing epoxy resin systems most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/04C08G59/50C08G59/68
CPCC08G59/5026C08G59/5033C08G59/504C08G59/686C08L63/00C08L2205/02C08L2205/025C08L63/04
Inventor 李刚亓淑源杨小平许鹏
Owner BEIJING UNIV OF CHEM TECH
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