Study On The Electrical Properties Of Conductive PVC Solid And Foam Composites

As one of the five most universal plastic, PVC has been widely used; it is easily obtained and low-cost and has rather mature manufacturing technique. Otherwise PVC has good incombustibility, anti-chemical corrosion, high tension and electric insulativity. The PVC development and research have become more and more prominent in practical applications and become one of the standards to evaluate the country's industry level. The theories of PVC modification are abundant due to the widely studies. At present, PVC conductive materials are becoming important products in our common life. British Dugdale company developed a NTC composite of PVC as cable protecting tube in 2004.For conductive polymer foams, physics property, high thermal expansion, cushioning ability, and conductivity are mainly utilized. They are mostly used in static testing and static elimination, some products and equipments have acquired patent rights. Otherwise, conductive polymer foams can also be used for anti-static packing of products and anti-static foams are developing to permanent conductive polyolefin from traditional impermanent ones. The electrical properties of polymer foams are mainly resistivity-temperature characteristic (PTC effect and NTC effect) and switching characteristic. The...