PTC陶瓷掺杂高分子PTC材料的研究  

RESEARCH OF POLYMERIC PTC MATERIAL FILLED BY PTC CERAMICS

作　　者：储九荣[1,2] 刘辅宜[1,2] 徐传骧[1,2] 

机构地区：[1]西安交通大学电气学院电气绝缘研究所 [2]电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《高分子材料科学与工程》2001年第5期159-161,共3页Polymer Materials Science & Engineering

基　　金：陕西省自然科学基金资助项目 ( 98C2 1

摘　　要：研究了 PTC陶瓷粉末掺杂高分子 PTC材料的电性能 ,发现掺杂后复合材料的室温体积电阻率降低、PTC强度增加。这为解决高分子 PTC材料中室温体积电阻率高与 PTC强度低的矛盾提供了一条新的途径。同时发现绝缘高介陶瓷粉末对高分子 PTC材料也有改善作用。另外 ,辐照交联可以很好地增加材料的 PTC强度和降低 NTC强度。对实验现象从理论上进行了定性分析。The electrical properties of polymeric PTC material filled by PTC ceramics powders were researched, it is found that its′ room-temperature bulk resistivity decreasing and the PTC intensity increasing. A new method was offered for solving the contradictory of high room temperature bulk resistivity and low PTC intensity of polymeric PTC material by this. At the same time it is found that the properties of polymeric PTC material can be improved by adding insulating and high dielectric constant ceramics powders. Moreover, the PTC intensity was enhanced and the NTC intensity decreased by radiation crossing. These were qualitative analyzed in theory.

关 键 词：PTC陶瓷粉末 有机PTC材料 掺杂 辐照交联 电性能 

分 类 号：TQ174.758[化学工程—陶瓷工业] TB39[化学工程—硅酸盐工业]