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Carbon fiber composite material with high compressive strength and high-pressure draw ratio and preparation method thereof

A Rabi carbon fiber and composite material technology, which is applied in the field of composite materials, can solve the problems of low compression, bending and compression-tension balance performance, difficulty in meeting the requirements of new equipment, and reduced weight reduction effect, so as to achieve high impregnation efficiency and increase Effects of interfacial bonding force, interlayer shear performance, and mechanical strength improvement

Active Publication Date: 2018-11-13
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Compression, bending, and compression-tension balance properties are relatively low, resulting in carbon fiber composite components being easily damaged when subjected to compression and bending loads, its application is limited, the weight reduction effect is reduced, and it is difficult to meet the requirements of new equipment

Method used

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  • Carbon fiber composite material with high compressive strength and high-pressure draw ratio and preparation method thereof

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preparation example Construction

[0030] The embodiment of the present invention provides a method for preparing a carbon fiber composite material with high compressive strength and high-pressure ratio, comprising the following steps:

[0031] Step 1, 100 parts by mass of resin, 30-60 parts by mass of curing agent, 0.5-2 parts by mass of accelerator and 0.1-3 parts by mass of inorganic nanoparticles to obtain a resin matrix;

[0032] Specifically, in the embodiment of the present invention, high-speed mechanical stirring is used to uniformly disperse the inorganic nanoparticles in the matrix resin, and the defoaming treatment is ready for use; the inorganic nanoparticles are preferably functionalized particles with different functional groups from the surface treatment liquid in step 2, and can be mixed with carbon fiber The chemical reaction on the surface strengthens the bonding force between the resin and the fiber interface.

[0033] Step 2, impregnating carbon fibers with a fiber diameter of 5.4-7.0 μm in...

Embodiment 1

[0040] The TG800 high-strength medium-model carbon fiber (tensile strength: 6200MPa, tensile modulus: 295GPa) with a fiber monofilament diameter of 5.4 μm is pulled and soaked at a rate of 0.1m / min, and then dried and wound through the surface treatment solution. The surface treatment solution is composed of the following mass: Component composition: 20 parts of γ-aminopropyltriethoxysilane, 18 parts of ethanol, 62 parts of water, 0.1 part of hydroxylated graphene;

[0041] 68 parts of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin, 32 parts of bisphenol A glycidyl ether epoxy resin, 60 parts of diaminodiphenylsulfone, 0.5 parts of benzyldimethylamine , 0.1 part of carboxylated graphene mixed at a high speed and uniformly prepared to obtain a matrix resin system; impregnating pre-surface-treated carbon fibers into the resin matrix to prepare a prepreg; laying and curing the prepreg to obtain a high Compressive strength and high-pressure ratio carbon fiber composite mate...

Embodiment 2

[0043] The TG800 high-strength medium-model carbon fiber (tensile strength: 6200MPa, tensile modulus: 295GPa) with a fiber monofilament diameter of 5.4 μm was pulled and soaked at a rate of 0.1m / min, and then dried and wound through the surface treatment solution. The composition of the surface treatment solution was 20 Parts of γ‐aminopropyltriethoxysilane, 18 parts of ethanol, 62 parts of water, 0.1 part of hydroxylated graphene;

[0044] 68 parts of 4,4'‐diaminodiphenylmethane tetraglycidyl epoxy resin, 32 parts of bisphenol A glycidyl ether epoxy resin, 60 parts of diaminodiphenylsulfone, 0.5 part of benzyldimethylamine , 0.5 parts of carboxylated carbon nanotubes are mixed at high speed and stirred evenly to prepare a matrix resin system; impregnating pre-treated carbon fibers into the resin matrix to prepare a prepreg; laying and curing the prepreg to obtain a high Compressive strength and high-pressure ratio carbon fiber composite materials, the curing process is (130°C...

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Abstract

The invention discloses a carbon fiber composite material with high compressive strength and a high-pressure draw ratio and a preparation method of the carbon fiber composite material with the high compressive strength and the high-pressure draw ratio, and belongs to the field of composite materials. The composite material comprises a resin matrix and reinforced fibers, wherein the reinforced fibers are carbon fibers of which the fiber monofilament diameters are 5.4 to 7.0 microns, the resin matrix comprises the following components in parts by mass: 100 parts of resin, 30 to 60 parts of a curing agent, 0.5 to 2 parts of an accelerator and 0.1 to 3 parts of inorganic nanoparticles. The composite material disclosed by the invention has excellent mechanical properties, especially the characteristics of high compressive strength and good pressure-tension balance, can be used for preparing main force-bearing structural parts of aerospace vehicles, and further can meet demands for the composite material with light weight, high strength, compressive strength and high-pressure draw ratio in the fields of high-speed rails, automotives and other industrial equipment.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a carbon fiber composite material with high compressive strength and high-pressure ratio and its preparation method and application. Background technique [0002] Carbon fiber composites are widely used in load-bearing structures due to their excellent properties such as low density and high modulus strength. At present, the advanced composite materials used in my country's national defense equipment adopt the first generation of advanced composite materials represented by T300 and T700 carbon fiber reinforced epoxy, with a tensile strength of 1300-1500MPa and a tensile modulus of 120-140GPa. The tensile strength of the second-generation advanced composite material with T800 grade carbon fiber as reinforcement can reach 2400-2800MPa, and the tensile modulus can reach 150-170GPa. my country's new generation of major equipment has an urgent demand for the second gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/02C08K9/06C08K7/06C08K3/04C08J5/06
CPCC08J5/005C08J5/06C08J2363/00C08J2463/00C08K7/06C08K9/02C08K9/06C08K13/06C08K2201/003C08K2201/011C08K3/041C08K3/042
Inventor 冯志海朱世鹏杨云华李龙潘月秀
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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