摘要
研究了炭黑(CB)含量对LDPE、HDPE、PA1010电阻率的影响,以及LDPE/CB、HDPE/CB、PA1010/CB复合体系的电阻-温度特性,发现PA1010/CB体系的正温度系数(PTC)转变温度较高,但与HDPE/CB体系相比,其PTC强度却很低,不适于制备PTC材料。HDPE/CB体系在160℃附近具有较高的PTC效应,且辐射交联可消除其负温度系数(NTC)效应,容易加工成型,是制备低温区PTC材料的较好体系。
Electrical conductivity and positive temperature coefficient (PTC) phenomena and negative temperature coefficient (NTC) phenomena in carbon black(CB)-filled LDPE, HDPE, PAIOIO composites were studied respectively. It was discovered that PA1010/CB composite had a higher PTC transfer temperature, but its PTC strength was very lower than that of HDPE/CB composite. The reasons that cause electrical conductivity change and PTC, NTC phenomena were analysed and explained by tunnel theory.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2001年第11期1-4,共4页
Engineering Plastics Application
