Polyphenylene sulfide-based heat conducting composite material and preparation method thereof

Abstract

The invention relates to a polyphenylene sulfide-based heat conducting composite material and a preparation method thereof, belongs to the field of high polymer materials and provides the polyphenylene sulfide-based heat conducting composite material. The composite material comprises polyphenylene sulfide, polyamide, a heat conducting filler M and a heat conducting filler N, wherein the polyphenylene sulfide and the polyamide form a dual continuous phase structure; the heat conducting filler M is distributed in the polyphenylene sulfide phase; the heat conducting filler N is distributed in the polyamide phase; two independent heat conducting nets are formed. The composite material comprises the following materials in parts by weight: 20-30 parts of the polyphenylene sulfide, 15-30 parts of the polyamide, and 10-50 parts of the heat conducting filler M and the heat conducting filler N; the heat conducting filler M is different from the heat conducting filler N. According to the invention, the heat conducting property of the polyphenylene sulfide-based heat conducting composite material is improved greatly; the heat conducting coefficient of the polyphenylene sulfide-based heat conducting composite material can reach to 8.14 W / (m. K) maximally; the tensile strength and the bending strength are hardly affected by the heat conducting fillers.

Description

technical field [0001] The invention relates to a polyphenylene sulfide-based heat-conducting composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] With the development of industry in recent years, the corrosion resistance, mechanical strength, electrical insulation performance and processing performance of thermal conductive materials are required, and traditional thermal conductive materials such as metals can no longer meet the application requirements in some fields. Polymer materials have the characteristics of light weight, chemical corrosion resistance, excellent forming and processing performance, excellent electrical insulation performance, excellent mechanical and fatigue properties, etc., but polymer materials themselves are mostly poor conductors of heat, and heat tends to concentrate in local areas and continue to increase , and the transfer between different regions of the polym...

AI Technical Summary

Problems solved by technology

However, polyphenylene sulfide itself has poor thermal conductivity, and its thermal conductivity is about 0.2W / (m.K). Improving its thermal conductivity on the basis of maintaining the original excellent comprehensive performance of PPS is of great significance for expanding its application field

Chinese invention patent application CN101113240A discloses adding magnesium oxide and glass fiber to polyphenylene sulfide to prepare thermally conductive and insulating polyphenylene sulfide with a thermal conductivity of 0.85W / (m.K), but compared with pure glass fiber reinforced polyphenylene sulfide, The mechanical properties are significantly reduced, the tensile strength is reduced by 20%, and the notched impact strength is reduced by 30%.

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