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Carbon fiber surface treatment agent and treatment method thereof

A technology of surface treatment agent and treatment method, which is applied in the field of polymers, can solve the problems of low utilization rate, achieve the effects of improving surface polarity, improving adhesion, and simple production process

Inactive Publication Date: 2014-05-28
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silane coupling agent is easy to self-condense into siloxane oligomers during use, the actual utilization rate is low, and the part that is effectively chemically bonded to the surface of the glass fiber is also very easy to hydrolyze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The carbon fiber is directly infiltrated with liquid polyacrylonitrile (viscosity average molecular weight 106), and the carbon fiber is pre-oxidized in an oven at 50 degrees Celsius for 100 hours to obtain a surface-treated carbon fiber.

Embodiment 2

[0022] The carbon fibers are directly soaked with 40% (wt) polyacrylonitrile (viscosity average molecular weight: 3000) ethanol solution, and the carbon fibers are pre-oxidized in an oven at 180 degrees Celsius for 10 hours to obtain surface-treated carbon fibers.

Embodiment 3

[0024] The carbon fibers are directly soaked with 60% (wt) polyacrylonitrile (viscosity average molecular weight: 5000) methanol solution, and the carbon fibers are pre-oxidized in an oven at 250 degrees Celsius for 0.1 hour to obtain surface-treated carbon fibers.

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PUM

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Abstract

The invention discloses a carbon fiber surface treatment agent and a treatment method thereof. The carbon fiber surface treatment agent is prepared through the following components: 0-99 percent of dissolvent and 1-100 percent of polyacrylonitrile. According to the carbon fiber surface treatment agent and the treatment method disclosed by the invention, the adhesion of carbon fibers to a polar resin matrix is improved by treating the surfaces of the carbon fibers through liquid polyacrylonitrile, and the mechanical property of a carbon fiber-reinforced material is improved. The carbon fiber surface treatment agent and the treatment method disclosed by the invention have the advantages of improved surface polarity of the carbon fibers, increased adhesion of the carbon fibers to the resin matrix, high strength and good tenacity of the obtained carbon fiber-reinforced material products, simple manufacturing technique, and wide application to carbon fiber-reinforced high-performance structural materials for automobiles, equipment for the war industry and aviation.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a carbon fiber surface treatment agent and a treatment method thereof. Background technique [0002] Carbon fiber has the characteristics of high strength, low density, high temperature resistance, water resistance and corrosion resistance, and is an excellent high-strength reinforcing material. Carbon fiber reinforced polymer resin is a very important high-performance structural material for military equipment and aviation. Most of the carbon fiber reinforced high-performance resins are polar resins, such as polyamide, polyester, polyimide, etc. The surface polarity of carbon fiber is very weak, and the bonding force with polar resin is very small, so it generally needs to be surface treated before it can be used to reinforce composite materials. Commonly used carbon fiber surface treatment agents include silane coupling agents and acrylic and polyurethane film formers. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/31D06M101/40
Inventor 徐东徐永黄新政
Owner ANHUI KEJU NEW MATERIALS
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