Preparation of conductive dynamically vulcanized thermoplastic elastomer material

Abstract

The invention relates to a conductive dynamically vulcanized thermoplastic elastomer material, which is characterized in that the invention is prepared by adopting the following raw materials in weight percentage: 10 per cent to 50 per cent of propylene copolymers, 20 per cent to 75 per cent of ethylene propylene diene monomers, 4 per cent to 8 per cent of antistatic agents, 1 per cent to 20 per cent of polyethylene waxes, 0.1 per cent to 0.5 per cent of curing agents, 0.1 per cent to 0.5 per cent of antioxidants and 0.1 per cent to 0.5 per cent of lubricants.The preparation method comprises the following steps: the raw materials are scaled and taken according to a weight proportion; all the materials are put into a high mixing machine to be mixed for 2-5 minutes; the materials are taken out; the mixed materials are put into a screw compressor for extruding granulations. The rotating speed of the screw compressor is 180-600r / m and temperature is 160-200 DEG C. The invention has the advantages that the prepared thermoplastic elastomer material has excellent conductivity, has a surface resistance ranging from 200 Omegas to 800 Omegas and can be used for fabricating the electronic production equipments, tools, electronic instruments, meter shells and decorative materials for dustfree production workshops, on which the demands for static electricity prevention, electromagnetic wave interference prevention and inexistence of dust are met.

Description

technical field [0001] The invention relates to a preparation method of a conductive dynamic vulcanized thermoplastic elastomer material, which can be used to manufacture electronic production equipment, tools, electronic instruments, instrument shells and dust-free production workshop decorations with anti-static, anti-electromagnetic interference and dust-free requirements A material belongs to the technical field of polypropylene. Background technique [0002] Dynamic vulcanization blended thermoplastic vulcanizate (TPV) is a composite material in which micron-scale crosslinked rubber particles are dispersed in resin, that is, the rubber phase is the dispersed phase, and the resin phase is the continuous phase. At present, the research on the phase structure, processing performance and physical properties of TPV has been in-depth, but the research on its conductivity is less. Structural conductive polymers are complex and costly. At present, additive modification is oft...

AI Technical Summary

Problems solved by technology

The new conductive materials are carbon fillers, mainly conductive carbon black, graphite, and carbon fiber, among which carbon black is the mainstream, because carbon black is cheap and practical, and there is a large room for conductivity requirements. Surface resistance can range from 10 2 -10 9 Ω, but due to the poor compatibility between carbon black and resin, the dispersion in the resin system is uneven, resulting in unstable electrical properties of each point of the material