Continuous carbon fiber reinforced nylon composite material used under continuous high temperature environment, and preparation method thereof

A nylon composite material, high-temperature environment technology, applied in the field of nylon composite materials, can solve the problems of failing to give full play to carbon fiber and the decline of comprehensive mechanical properties of materials, and achieve a small friction coefficient, ultra-high comprehensive mechanical properties, and good dimensional stability. Effect

Inactive Publication Date: 2013-02-27
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing carbon fiber reinforced nylon composite materials are prepared by mixing carbon fiber and nylon in the extruder through a twin-screw extruder. The carbon fibers are arranged randomly in the composite material and the length is usually less than 1mm. The composite mechanical properties and Compared with nylon resin, it has been greatl

Method used

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  • Continuous carbon fiber reinforced nylon composite material used under continuous high temperature environment, and preparation method thereof
  • Continuous carbon fiber reinforced nylon composite material used under continuous high temperature environment, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix 100 parts of nylon 6 resin, 1 part of compatibilizer PP-g-MAH, 0.3 part of antioxidant 1098, 0.5 part of organic copper salt compound copper dithiocarbamate, 0.2 part of carbon free radical scavenger 136 , 0.3 part of anti-hydrolysis agent triallyl isocyanurate, 0.1 part of lubricant zinc stearate are mixed evenly in a high mixer;

[0022] (2) The uniformly mixed material obtained in step 1) is melted and extruded through the extruder, and then the continuous carbon fiber is fully impregnated through the impregnation head, and the nylon composite material is controlled by controlling the extrusion amount of the extruder and the addition of continuous carbon fiber. The content of medium carbon fiber is 5 parts;

[0023] (3) The continuous carbon fiber impregnated material obtained in step 2) was drawn, cooled, cut to length and dried to obtain a continuous carbon fiber reinforced nylon 6 composite material. The performance test results of the obtained material ar...

Embodiment 2

[0025] (1) Mix 100 parts of nylon 6 resin, 5 parts of compatibilizer PP-g-MAH, 0.3 parts of antioxidant 1098, 0.5 parts of organic copper salt compound copper dithiocarbamate, 0.2 parts of carbon free radical scavenger 136 , 0.3 parts of anti-hydrolysis agent triallyl isocyanurate, 0.1 part of lubricant zinc stearate are mixed evenly in a high mixer; (lack of anti-hydrolysis agent)

[0026] (2) The uniformly mixed material obtained in step 1) is melted and extruded through the extruder, and then the continuous carbon fiber is fully impregnated through the impregnation head, and the nylon composite material is controlled by controlling the extrusion amount of the extruder and the addition of continuous carbon fiber. The content of medium carbon fiber is 50 parts;

[0027] (3) The continuous carbon fiber impregnated material obtained in step 2) was drawn, cooled, cut to length and dried to obtain a continuous carbon fiber reinforced nylon 6 composite material. The performance te...

Embodiment 3

[0029] (1) Mix 100 parts of nylon 6 resin, 15 parts of compatibilizer PP-g-MAH, 0.3 parts of antioxidant 1098, 0.5 parts of organic copper salt compound copper dithiocarbamate, 0.2 parts of carbon free radical scavenger 136 , 0.3 parts of anti-hydrolysis agent triallyl isocyanurate, and 0.1 part of lubricant zinc stearate are mixed uniformly in a high-speed mixer; (2) The uniformly mixed material obtained in step 1) is melted through an extruder After extrusion, the continuous carbon fiber is fully impregnated through the impregnation head, and the content of carbon fiber in the nylon composite material is controlled to 150 parts by controlling the extrusion volume of the extruder and the addition of continuous carbon fiber;

[0030] (3) The continuous carbon fiber impregnated material obtained in step 2) was drawn, cooled, cut to length and dried to obtain a continuous carbon fiber reinforced nylon 6 composite material. The performance test results of the obtained material are...

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Abstract

The present invention discloses a continuous carbon fiber reinforced nylon composite material used under a continuous high temperature environment, and a preparation method thereof. The continuous carbon fiber reinforced nylon composite material comprises, by weight, 100 parts of a nylon resin, 5-150 parts of continuous carbon fibers, 1-15 parts of a compatibilizing agent, 0.1-3 parts of an antioxidant, 0.03-2 parts of an organic copper salt compound, 0.1-3 parts of a free radical scavenger, 0.05-2 parts of an anti-hydrolysis agent, and 0.1-5 parts of a lubricant. The preparation method comprises: adopting nylon, a compatibilizing agent, an additive for inhibiting high temperature oxidation degradation, and the like, carrying out melt extrusion through an extruder, and carrying out complete impregnating on continuous carbon fibers through an impregnating machine head to prepare the continuous carbon fiber reinforced nylon composite material. According to the present invention, the material has characteristics of super high comprehensive mechanical property, good size stability, permanent antistatic property, electromagnetic wave shielding, and small friction coefficient, wherein mechanical property retention rate after continuous use for 4000 h under a 160 DEG C high temperature environment is more than 85%.

Description

technical field [0001] The invention relates to a nylon composite material, more precisely, a continuous carbon fiber reinforced nylon composite material used in a continuous high temperature environment and a preparation method thereof. Background technique [0002] Nylon has excellent comprehensive properties such as good mechanical properties, good flexibility, wear resistance, oil resistance, self-lubricating property, easy forming and processing, etc. It is widely used in the automobile industry, electronic and electrical industry, mechanical equipment, construction industry, etc. field. Carbon fiber is mainly a special fiber composed of carbon elements. The molecular structure is between graphite and diamond. The carbon volume fraction varies with the variety, generally above 0.9; the main types are polyacrylonitrile-based carbon fiber, pitch-based carbon fiber, Viscose-based carbon fiber; carbon fiber has the characteristics of general carbon materials, such as high ...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08K7/06C08K3/04C08J5/04
Inventor 刘春林王海利芮国芬
Owner CHANGZHOU UNIV
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