Heat-conducting polymer material and its prepn

Abstract

The heat-conducting polymer material includes polyolefin, heat-conducting assistant, environmental stress crack resisting assistant and impact resisting modifier. It is prepared through addition of crosslinking agent into heat-conducting assistant for surface treatment, or high temperature sintering and surface treatment of heat-conducting assistant after or without puffing treatment; mixing polyolefin with antioxidant; mixing all the material; fusion and extrusion in a double-screw extruder; cooling, drawing and slicing. The material of the present invention has excellent mechanical property, high conductivity and good welding property.

Description

technical field

[0001] The invention relates to a polymer compound composition, in particular to a heat-conducting polymer material and a preparation method. Background technique

[0002] The main difference between plastic and metal lies in its low electrical and thermal conductivity, which makes plastic unable to replace metal in some fields. If plastics can conduct electricity or heat, their application fields will be greatly expanded. At the same time, heat-conducting plastics can be produced by molding and extrusion, which can not only reduce the number of parts and reduce costs, but also the parts can be designed and molded into thin-walled products to increase the surface area of ​​the product itself. This makes thermally conductive plastics widely used in commercial instruments, automation equipment, gears, bearings, mobile phones, generator covers, light boxes, central air-conditioning system cold storage systems, dam engineering cooling s...