A kind of flame-retardant and toughened epoxy resin carbon fiber prepreg and preparation method thereof

A carbon fiber prepreg, tough epoxy resin technology, applied in the field of polymer material preparation, can solve the problems of low toughness of matrix resin, poor flame retardancy of matrix, can not meet requirements, etc., achieves excellent flame retardant effect, easy to disperse, and improved toughness Effect

Active Publication Date: 2018-07-17
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its matrix resin has low toughness and poor flame retardancy, which seriously affects its wider application.
[0003] The invention relates to a method for preparing a flame-retardant and toughened epoxy resin carbon fiber prepreg; aiming at the high cross-linking density of the epoxy resin after curing, not only the toughness is low but also the flame retardancy of the matrix is ​​poor, therefore, it is prepared with pure epoxy resin Composite materials cannot meet the requirements of industrial development for high-performance resin-based composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Place 670 grams of solid epoxy resin 901 and 330 grams of liquid epoxy resin (bisphenol A type 128) in a 2000 ml glass flask with a vacuum device, stir at 100 ° C for 30 minutes to obtain solution A, which is directly used next step reaction;

[0033] 2) Add 100 grams of halogen-free flame retardant and toughening agent SPB-100 to solution A in the previous step, and stir at 120°C for 30 minutes to obtain mixture B;

[0034] 3) Add 30 grams of accelerator curing agent dicyandiamide to the mixture B in the previous step for 100 seconds, and stir at 70°C for 10 minutes to obtain mixture C;

[0035] 4) Put the mixture C of the previous step and 30 grams of accelerator UR300 in a 2000 ml glass flask with a vacuum device, and stir at 80°C for 20 minutes to obtain solution D. The viscosity of D at 70°C is 23000 cps;

[0036] Put the solution D in a gluing machine at 70°C, detect the thickness of the film or the surface density of the film with an infrared instrument, and ...

Embodiment 2

[0039] 1) Place 670 grams of solid epoxy resin 901 and 330 grams of liquid epoxy resin (bisphenol A type 128) in a 2000 ml glass flask with a vacuum device, stir at 120 ° C for 30 minutes to obtain solution A, which is directly used next step reaction;

[0040] 2) Add 150 grams of halogen-free flame retardant and toughening agent SPB-100 to solution A in the previous step, and stir at 100°C for 30 minutes to obtain mixture B;

[0041] 3) Add 60 grams of accelerator curing agent dicyandiamide to the mixture B in the previous step for 100 seconds, and stir at 80°C for 10 minutes to obtain mixture C;

[0042] 4) Put the mixture C of the previous step and 10 grams of accelerator UR500 in a 2000 ml glass flask with a vacuum device, and stir at 70°C for 20 minutes to obtain solution D, whose viscosity at 70°C is 25,000 cps;

[0043] Put the solution D in a gluing machine at 70°C, detect the thickness of the film or the surface density of the film with an infrared instrument, and lo...

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Abstract

The invention discloses flame-retardant toughened epoxy resin and carbon fiber prepreg and a method for preparing the same. The method includes completely stirring and mixing liquid epoxy resin and solid epoxy resin with each other at the temperature of 100-120 DEG C to obtain mixed liquid A; completely stirring and mixing the mixed liquid A and flame retardants SPB-100 with one another at the temperature of 100-120 DEG C to obtain mixed liquid B; adding curing agents into the mixed liquid B and uniformly stirring the curing agents and the mixed liquid B at the temperature of 70-80 DEG C to obtain mixed liquid C; adding accelerators into the mixed liquid C and uniformly stirring the accelerators and the mixed liquid C at the temperature of 70-80 DEG C to obtain mixed liquid D; preparing the flame-retardant toughened epoxy resin and carbon fiber prepreg from the mixed liquid D by the aid of a gumming machine and a prepreg machine. The flame-retardant toughened epoxy resin and carbon fiber prepreg and the method have the advantage that the flame retardance and the toughness of the flame-retardant toughened epoxy resin and carbon fiber prepreg can be improved by the aid of the method.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a method for preparing a flame-retardant and toughened epoxy resin carbon fiber prepreg. Background technique [0002] Carbon fiber / resin matrix composites have a series of excellent properties such as high specific strength, high specific modulus, corrosion resistance, ablation resistance, fatigue resistance and dimensional stability, and have been successfully used in civil and military applications. However, the toughness of the matrix resin is low and the flame retardancy of the matrix is ​​poor, which seriously affects its wider application. [0003] The invention relates to a method for preparing a flame-retardant and toughened epoxy resin carbon fiber prepreg; aiming at the high cross-linking density of the epoxy resin after curing, not only the toughness is low but also the flame retardancy of the matrix is ​​poor, therefore, it is prepare...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K7/06C08K3/04C08J5/24
CPCC08J5/24C08J2363/00C08L63/00C08L2205/025C08K7/06C08K3/04
Inventor 鲁平才赵钎陈伟
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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