Long carbon fiber enhanced high-heat-conductivity polymer composite and preparation method thereof

A long carbon fiber and composite material technology, applied in the field of fiber reinforced composite materials, can solve the problems of low friction coefficient and wear rate, restrictions, etc., and achieve the effect of large carbon fiber length-to-diameter ratio, consistent arrangement, and easy process control

Active Publication Date: 2012-05-30
上海事升新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN101831172 A discloses a carbon fiber reinforced nylon 66 composite material and its preparation method. The composite material has good mechanical properties, low friction coefficient and wear rate. When the carbon fiber content is 40%, the tensile strength reaches 280MPa and the Rockwell hardness 150, the coefficient of friction is about 0.21, but because the thermal conductivity of the material has not been improved, its application in fields requiring heat transfer is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Using the pultrusion process, 60 parts (by weight, the same below) of PA66 resin, 40 parts of continuous long carbon fiber, 0.5 part of silane coupling agent, 0.3 part of antioxidant, and 1 part of calcium stearate are made into long carbon fiber reinforced PA66 resin masterbatch ; Mix 40 parts of PA66 resin, 60 parts of nano-aluminum nitride, 0.5 part of silane coupling agent, 0.3 part of antioxidant, and 1 part of calcium stearate, and use traditional extrusion technology to make PA66 thermal conductivity masterbatch; then 50 parts 1 part of long carbon fiber reinforced PA66 resin masterbatch was blended with 50 parts of PA66 thermally conductive masterbatch (1:1 by weight ratio), and injection molded into a standard sample to test its mechanical properties and thermal conductivity. In the final long carbon fiber reinforced thermally conductive PA66 masterbatch, it contains 50 parts of PA66 resin, 20 parts of long carbon fiber, 30 parts of nano-aluminum nitride, 0.5 pa...

Embodiment 2

[0042] Using the pultrusion process, 50 parts of PA66 resin, 50 parts of continuous long carbon fiber, 0.5 part of silane coupling agent, 0.3 part of antioxidant, and 1 part of calcium stearate are made into long carbon fiber reinforced PA66 resin masterbatch; 40 parts of PA66 resin, 60 parts of nano-aluminum nitride, 0.5 parts of silane coupling agent, 0.3 parts of antioxidant, and 1 part of calcium stearate are mixed, and PA66 thermal conductivity masterbatch is made by traditional extrusion process; then 50 parts of long carbon fiber reinforced PA66 resin masterbatch The pellets were blended with 50 parts of PA66 thermal conductivity masterbatch (1:1 by weight ratio), and injection molded into standard specimens to test its mechanical properties and thermal conductivity. In the final long carbon fiber-reinforced thermally conductive PA66 masterbatch, it contains 45 parts of PA66 resin, 25 parts of long carbon fiber, 30 parts of nano-aluminum nitride, 0.5 part of silane coupl...

Embodiment 3

[0044]Using the pultrusion process, 50 parts of PA66 resin, 50 parts of continuous long carbon fiber, 0.5 part of silane coupling agent, 0.3 part of antioxidant, and 1 part of calcium stearate are made into long carbon fiber reinforced PA66 resin masterbatch; 40 parts of PA66 resin, 60 parts of nano-aluminum nitride, 0.5 parts of silane coupling agent, 0.3 parts of antioxidant, and 1 part of calcium stearate are mixed, and PA66 thermal conductivity masterbatch is made by traditional extrusion process; then 33.33 parts of long carbon fiber reinforced PA66 resin masterbatch Granules were blended with 66.67 parts of PA66 thermally conductive masterbatch (ratio of parts by weight: 1:2), and injection molded into a standard sample to test its mechanical properties and thermal conductivity. In the final long carbon fiber-reinforced thermally conductive PA66 masterbatch, it contains 43.3 parts of PA66 resin, 16.7 parts of long carbon fiber, 40 parts of nano-aluminum nitride, 0.5 part ...

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Abstract

The invention discloses a long carbon fiber enhanced high-heat-conductivity polymer composite, which is made of, by weight, from 10 to 80 parts of long carbon fiber enhanced thermoplastic resin masterbatch and from 20 to 90 parts of heat-conducting masterbatch by means of mixing. The long carbon fiber enhanced thermoplastic resin masterbatch is made of from 30 to 80 parts of first thermoplastic resin, from 20 to 70 parts of continuous long carbon fibers, from 0.5 to 2 parts of first coupling agent, from 0.3 to 0.5 part of first antioxidant and from 0.5 to 1 part of first processing aid by means of pultrusion. The heat-conducting masterbatch is made of from 30 to 80 parts of second thermoplastic resin, from 20 to 70 parts of heat-conducting agent, from 0.5 to 2 parts of second coupling agent, from 0.3 to 0.5 part of second antioxidant and from 0.5 to 1 part of second processing aid by means of traditional extrusion process. The long carbon fiber enhanced high-heat-conductivity polymer composite has excellent heat conductivity and mechanical property, and continuity of a heat-conducting network can be effectively improved by means of the long carbon fibers.

Description

technical field [0001] The invention relates to a fiber-reinforced composite material, in particular to a long carbon fiber-reinforced high thermal conductivity polymer composite material and a preparation method thereof. Background technique [0002] Carbon fiber is a new type of high-performance fiber reinforced material, which has many excellent properties such as high strength, high modulus, high temperature resistance, wear resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, thermal conductivity and far-infrared radiation. It can reduce the weight of components in the form of composite materials, thereby improving the technical performance of components. It has been widely used in high-tech fields such as aerospace, new textile machinery, petrochemical industry, medical equipment, automobile, machinery manufacturing, construction industry, stationery, telecommunications, electric heating, etc. Its wide application will great...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L25/06C08L77/00C08L55/02C08L59/02C08L69/00C08L67/02C08L71/12C08L81/02C08L75/04C08K13/04C08K7/06C08K3/28C09K5/14B29B9/06
Inventor 章园红
Owner 上海事升新材料有限公司
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