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Modified carbon fiber reinforced PEK-C composite material

A technology of fiber reinforcement and composite materials, applied in the direction of coating, etc., can solve the problems of poor performance of composite materials, difficulty in high performance of carbon fiber, and low interface bonding strength, and achieve low interface bonding strength, increased activity, and improved wettability and adhesion. Effect

Inactive Publication Date: 2017-03-01
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the untreated carbon fiber has a smooth surface, less active groups, and high inertness. When it is combined with a resin matrix, the interfacial bonding strength is low, and it is difficult to maximize the high performance of the carbon fiber, resulting in poor composite properties.

Method used

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  • Modified carbon fiber reinforced PEK-C composite material
  • Modified carbon fiber reinforced PEK-C composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The PEK-C composite material of the present invention is composed of modified carbon fiber mixed with PEK-C, the matrix of the modified carbon fiber is chopped carbon fiber, and the modified carbon fiber is self-made by the laboratory. The carbon fiber raw material is firstly removed by acetone solution, and then dried in an oven. Finally, the carbon fiber is plasma-treated with a radio frequency inductively coupled plasma device. The drying temperature of the oven is 70°C, and the drying time is 1h; the output power of the radio frequency source is 300W.

[0028] The modified carbon fiber reinforced PEK-C composite material of this embodiment improves the surface activity of the carbon fiber, thereby improving the wettability and bonding force between the carbon fiber and the resin matrix, and also enhances the mechanical properties of the PEK-C composite material at the same time, making it It can be more widely applied to the fields of automobile, aerospace, processin...

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Abstract

The invention provides a modified carbon fiber reinforced PEK-C composite material. The PEK-C composite material is composed by mixing modified carbon fibers with PEK-C, wherein a preparation method of the composite material comprises the steps of: modification of carbon fibers, primary drying, high-speed mixing, extrusive granulation, secondary drying, and injection moulding. The PEK-C is high-temperature-resistant and self-lubricating, has excellent thermal stability and excellent mechanical performance and processability, and is widely applied in various fields. Non-processed carbon fibers have smooth surface, less active groups and high inertia, and when the carbon fibers are composited with a resin substrate, interface adhesion strength is low and high performances of the carbon fibers are difficult to achieve, which cause poor mechanical performance of the composite material; by adding the modified carbon fibers to the PEK-C, infiltration and adhesion force between fibers and the resin substrate are improved, and meanwhile, the PEK-C composite material is improved in mechanical performances.

Description

technical field [0001] The present invention relates to a composite material, in particular to a modified carbon fiber reinforced PEK-C composite material. Background technique [0002] Engineering plastic PEK-C has the advantages of high temperature resistance, hydrolysis resistance, and self-lubricating properties. Some of its comprehensive properties are similar to those of PEEK, and it has good thermal stability, electrical insulation, and excellent mechanical properties and processing properties. It is widely used in many fields, such as: aerospace, electronic appliances, medical field, automobile manufacturing industry, instrument manufacturing industry, etc., especially as a toughening resin, it can be combined with phenolic resin, BMI resin, polyphenylene sulfide resin, Epoxy resin, cyanate resin and glass fiber and carbon fiber form a blend or composite material, which has a good toughening effect. Carbon fiber has the advantages of high specific strength, high spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10C08K9/00C08K7/06B29B9/16B29B13/06B29B13/08B29C45/00
Inventor 赵岩磊谢众林航
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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