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High-temperature resistance carbon fiber/epoxy resin composite material, preparation method and use

A technology of epoxy resin and composite materials, which is applied in the field of high-performance resin-based composite materials, can solve the problems of long-time resin and high curing reaction temperature, and achieve the effect of promoting curing reaction and good storage stability

Inactive Publication Date: 2010-08-18
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the curing reaction temperature between acid anhydride curing agent and aromatic amine curing agent and epoxy resin is generally high, and it takes a long time to completely cure the resin

Method used

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  • High-temperature resistance carbon fiber/epoxy resin composite material, preparation method and use
  • High-temperature resistance carbon fiber/epoxy resin composite material, preparation method and use
  • High-temperature resistance carbon fiber/epoxy resin composite material, preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation method of promotor ethylamine hydrofluoride:

[0047] A polytetrafluoroethylene three-necked round-bottomed flask equipped with a constant-pressure dropping funnel was fixed in the middle of a magnetic heating stirrer, and the flask was filled with high-purity nitrogen for 30 minutes, and then 0.5 mol of anhydrous hydrofluoric acid (about 55 mL) was added to the flask, Use the low-temperature coolant circulation pump to control the reaction temperature between -5 and 0°C; at the same time, take a 500mL beaker, dissolve 0.5mol ethylamine in 200mL carbon tetrachloride, and then dissolve the ethylamine carbon tetrachloride solution Transfer to the constant pressure dropping funnel, and slowly add it dropwise into the round bottom flask within 30min. After the dropping is completed, quickly remove the constant pressure dropping funnel, seal the flask with a polytetrafluoroethylene stopper, continue to stir for 1h, and let it stand for 1 hour. Set layers. Ca...

Embodiment 2

[0049] The preparation method of accelerator n-butylamine hydrofluoride:

[0050] A polytetrafluoroethylene three-necked round-bottomed flask equipped with a constant-pressure dropping funnel was fixed in the middle of a magnetic heating stirrer, and the flask was filled with high-purity nitrogen for 30 minutes, and then 0.35 mol of anhydrous hydrofluoric acid (about 33 mL) was added to the flask, Use the low-temperature coolant circulation pump to control the reaction temperature between -5 and 0°C; at the same time, take a 500mL beaker, dissolve 0.3mol n-butylamine in 200mL carbon tetrachloride, and then tetrachloride n-butylamine Transfer the carbon solution to a constant-pressure dropping funnel, and slowly add it dropwise into a round-bottomed flask within 30 minutes. After the addition is complete, quickly remove the constant-pressure dropping funnel, seal the flask with a polytetrafluoroethylene stopper, and continue stirring for 2 hours. , standing layered. Carbon tet...

Embodiment 3

[0052] The preparation method of accelerator ethylenediamine hydrofluoride:

[0053] A polytetrafluoroethylene three-necked round-bottom flask equipped with a constant-pressure dropping funnel was fixed in the middle of a magnetic heating stirrer, and the flask was filled with high-purity nitrogen for 30 minutes, and then 0.7 mol of anhydrous hydrofluoric acid (about 77 mL) was added to the flask, Use the low-temperature coolant circulation pump to control the reaction temperature between -5 and 0°C; at the same time, take a 500mL beaker, dissolve 0.3mol ethylenediamine in 200mL carbon tetrachloride, and then ethylenediamine tetrachloride Transfer the carbon solution to the constant pressure dropping funnel, and slowly add it dropwise into the round-bottomed flask within 30 minutes. After the addition is completed, quickly remove the constant pressure dropping funnel, seal the flask with a polytetrafluoroethylene stopper, and continue stirring for 3 hours. , standing layered. ...

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Abstract

The invention discloses a high-temperature resistance carbon fiber / epoxy resin composite material, a preparation method and use. The method comprises the steps of preimpregnation material preparation and composite material curing forming. Through introducing a kind of latent accelerating agents of fatty amine hydrofluoride, the method reduces the forming time of the composite materials in a mold, effectively improves the production efficiency, reduces the production cost, and can not shorten the storage period of the preimpregnation materials. Through the high-temperature heat treatment, the invention further improves the crosslink density of the resin, and is favorable for improving the vitrification conversion temperature of the composite materials, and at the same time, the high-temperature heat treatment can effectively eliminate the inner stress produced by fast curing. The prepared composite material has good mechanical property and abrasion resistance performance, the vitrification conversion temperature of the composite material is between 190 and 210 DEG C, and the 180 DEG C high-temperature environment resistance requirements can be met.

Description

technical field [0001] The invention belongs to the field of high-performance resin-based composite materials, and in particular relates to a high-temperature-resistant carbon fiber / epoxy resin composite material, a preparation method and an application of the composite material. Background technique [0002] Carbon fiber / epoxy resin composites have many advantages such as light weight, high specific strength, and good dimensional stability, and are widely used in national defense and civilian cutting-edge fields. In carbon fiber / epoxy resin composites, the matrix resin plays the role of adhering fibers and transmitting loads, and the performance of the matrix resin has a decisive impact on the performance of the composite material. [0003] For carbon fiber / epoxy composites to be used in high temperature environments, the glass transition temperature of the matrix resin must be higher than the ambient temperature. There are two main ways to increase the glass transition te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/04C08K13/04C08K7/06C08K5/17C08K5/41B29C43/58B29C71/02
Inventor 邹小武张黎明李玮陈锦松邓信晟王华卢勇
Owner SUN YAT SEN UNIV
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