High thermal conductive wear resistant polyphenylene sulfide composite material and preparation method thereof

Abstract

The invention belongs to the technical field of electronics, and in particular relates to a high thermal conductive wear resistant polyphenylene sulfide composite material and a preparation method thereof. The material contains the following components byweight: 45-80 parts of PPS, 15-50 parts of a conductive filler, 1.5-5 parts of acompatibilizer, 1-3 parts of a silane coupling agent. The conductive filler is a mixture of carbon nanotube (CNT) and carbon fiber (CF). The invention adopts an acid oxidation method for the treatment of carbon nanotubes and carbon fiber, and solves the problems of high snarling degree, difficulty in disperse, and poor bonding performance with a matrix resin of a thermal conducting filler. A melt blending method is used to disperse a variety of additives with excellent performance into PPS, so as to solve the defects of incompatibility of thermal grinding tolerance and high mechanical property of an existing material. The prepared by high thermal conductive wear resistant polyphenylene sulfide composite material has light weight, high heat conductivity, wear resistance and excellent comprehensive mechanical properties.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a high thermal conductivity and wear-resistant polyphenylene sulfide composite material and a preparation method thereof. Background technique [0002] Compared with metal materials, the poor thermal conductivity of polymer materials limits its application in some fields. At present, due to the advantages of light weight, low price and corrosion resistance of polymer materials, people hope to develop high thermal conductivity materials. Molecular materials to expand their range of applications. At present, the research on thermally conductive polymer materials is mainly concentrated on filled thermally conductive polymer composite materials. High thermally conductive materials facilitate the heat conduction and heat dissipation of the system and improve the reliability of electronic products. The development of multi-functionality has put forward higher req...

AI Technical Summary

Problems solved by technology

There are certain studies at home and abroad, and there are reports abroad that PPS and metal powder and metal fiber composite materials have the advantage of excellent electrical and thermal conductivity, but the material has low mechanical strength and poor fluidity; Liu Yunchun in China has studied PPS and oxidation. The performance and application of aluminum thermal composite materials, when the mass fraction of alumina is 70%, the thermal conductivity of the composite material is 2.3W / (m.K), and the mechanical properties of the composite material are not high, Qin Bixun et al. studied the PPS and The thermal conductivity of the magnesium oxide composite material, the thermal conductivity of the obtained composite material is not high, and the Chinese patent CN101225231A discloses a preparation method of insulating and thermally conductive glass fiber reinforced PPS, which is mainly composed of PPS resin and inorganic insulating and thermally conductive filler, but The thermal conductivity of the material prepared by this method is not high. Although the patent CN 102558862 A has made improvements to the above defects, its thermal conductivity and heat dissipation performance need to be further improved, and its wear resistance is not ideal.