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Carbon fiber reinforced resin based high-performance light composite material and preparation method thereof

A technology for reinforcing resin-based and composite materials, which is applied in the direction of carbon fiber, fiber treatment, radioactive element fiber treatment, etc., and can solve the problems that cannot meet the high performance requirements of composite materials, cannot form mechanical anchoring, and poor wettability of resin matrix. Achieve the effect of increasing interlayer shear strength, improving interface performance and improving surface roughness

Inactive Publication Date: 2018-04-20
XIHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the surface of the carbon fiber precursor is composed of a large number of inert graphite microcrystals, the surface of the precursor is non-polar, the surface energy is small, the wettability with the resin matrix is ​​poor, and the interface bonding performance is poor.
In addition, the high-performance carbon fiber has a smooth surface and a small specific surface area, which also prevents effective mechanical anchoring between the carbon fiber and the matrix, and the interface strength between the carbon fiber and the resin matrix decreases.
[0003] In order to solve the above problems, the surface modification treatment of carbon fiber is generally carried out. Common methods include coating method, oxidation method and radiation method. Although the bonding performance of carbon fiber and resin matrix and the strength of composite materials can be improved to a certain extent, it still cannot meet the requirements People's requirements for high performance of composite materials

Method used

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  • Carbon fiber reinforced resin based high-performance light composite material and preparation method thereof
  • Carbon fiber reinforced resin based high-performance light composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] The high-performance lightweight composite material based on carbon fiber reinforced resin in this embodiment includes the following components in parts by weight: 65 parts of composite resin, 25 parts of modified carbon fiber, 10 parts of glass fiber, 10 parts of curing agent and 15 parts of thinner.

[0032] The above composite resin is composed of 92.5wt% 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester and 7.5wt% 4,4-diaminodiphenylmethane tetraglycidylamine .

[0033] The preparation method of the above-mentioned modified carbon fiber is as follows: cleaning the carbon fiber to remove impurities; performing grafting reaction on the graphene acidified by concentrated sulfuric acid and concentrated nitric acid with a silane coupling agent to obtain modified graphene, and modifying Graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent are mixed according to the ratio of 3:55:10 by weight to prepare a sizing agent; the carbon fiber is ...

Embodiment 2

[0044] The carbon fiber-reinforced resin-based high-performance lightweight composite material of this embodiment includes the following components in parts by weight: 75 parts of composite resin, 25 parts of modified carbon fiber, 15 parts of glass fiber, 12 parts of curing agent and 20 parts of thinner.

[0045] The above composite resin is composed of 92.5wt% 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester and 7.5wt% 4,4-diaminodiphenylmethane tetraglycidylamine .

[0046] The preparation method of the above-mentioned modified carbon fiber is as follows: cleaning the carbon fiber to remove impurities; performing grafting reaction on the graphene acidified by concentrated sulfuric acid and concentrated nitric acid with a silane coupling agent to obtain modified graphene, and modifying Graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent are mixed according to the ratio of 3:55:10 by weight to prepare a sizing agent; the carbon fiber is pla...

Embodiment 3

[0057] The carbon fiber-reinforced resin-based high-performance lightweight composite material of this embodiment includes the following components in parts by weight: 70 parts of composite resin, 22 parts of modified carbon fiber, 14 parts of glass fiber, 10.5 parts of curing agent and 17.5 parts of thinner.

[0058] The above composite resin is composed of 92.5wt% 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester and 7.5wt% 4,4-diaminodiphenylmethane tetraglycidylamine .

[0059] The preparation method of the above-mentioned modified carbon fiber is as follows: cleaning the carbon fiber to remove impurities; performing grafting reaction on the graphene acidified by concentrated sulfuric acid and concentrated nitric acid with a silane coupling agent to obtain modified graphene, and modifying Graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent are mixed according to the ratio of 3:55:10 by weight to prepare a sizing agent; the carbon fiber is...

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Abstract

The invention discloses a carbon fiber reinforced resin based high-performance light composite material and a preparation method thereof and belongs to the technical field of composite materials. Thecarbon fiber reinforced resin based high-performance light composite material comprises the following components in parts by weight: 65-75 parts of a composite resin, 20-25 parts of a modified carbonfiber, 10-15 parts of a glass fiber, 10-12 parts of a curing agent and 15-20 parts of a diluent. By adopting the composite material, the mechanical property of the carbon fiber reinforced resin basedcomposite material can be improved, the compatibility and the dispersability of a carbon fiber in a resin base are improved, and requirements of application fields on high-strength light composite materials are met.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a carbon fiber reinforced resin-based high-performance lightweight composite material and a preparation method thereof. Background technique [0002] Carbon fiber is known as the king of new materials because of its high specific strength, high specific modulus, small current expansion coefficient, low density, high temperature resistance, corrosion resistance, excellent thermal and electrical conductivity, and is often used as a high-performance resin Reinforced materials for matrix composites are widely used in aircraft manufacturing, national defense industry, automobiles, medical equipment, sports equipment, etc. Since the surface of the carbon fiber precursor is composed of a large number of inert graphite microcrystals, the surface of the precursor is non-polar, the surface energy is small, the wettability with the resin matrix is ​​poor, and the interface bondi...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08J5/08D06M11/74D06M15/55D06M10/00D06M13/513D06M101/40C08L63/00
CPCC08J5/06C08J5/08C08J2363/00C08J2463/00D06M10/001D06M10/008D06M11/74D06M13/513D06M15/55D06M2101/40
Inventor 陈宝书赵天宝李正秋廖力
Owner XIHUA UNIV
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