标题:
工艺条件对PE/TiB2复合材料组织和性能的影响Influence of Process on Microstructure and Properties of PE/TiB2 Composites
作者:
杜怡林, 王建峰, 施文照, 杜晓东
关键字:
二硼化钛, PTC效应, 热循环稳定性, 导电复合材料Titanium Diboride, PTC Effect, Thermostability, Conductive Polymer Composites
期刊名称:
《Material Sciences》, Vol.5 No.1, 2015-01-12
摘要:
采用熔体共混法制备了聚乙烯/二硼化钛导电复合材料。研究了不同工艺条件对PE/TiB2复合体系室温电阻率、PTC强度的影响及成因。并从组织结构方面研究了工艺对PTC性能的影响。结果表明，制备良好性能的PE/TiB2复合材料的最佳模压条件是：模压压力为6~12 MPa，模压温度为150℃~170℃，模压时间选用15分钟，模压后的冷却时间为30分钟。
The PE/TiB2 electric conductive composites were prepared by melting blending process. The in-fluences and causes of process on the room-temperature resistivity, positive temperature coeffi-cient (PTC) of PE/TiB2 composites were investigated. The results show that the composites have better properties after molded with 6 - 12 MPa at 150˚C - 170˚C for 15 min, followed by cooling for 30 min.