石墨纤维填充PVDF/UPE复合物的电阻-温度效应研究  

Research on the Resistivity-Temperature Effects of PVDF/UPE Composites Filled with Graphite Fiber

作　　者：王新雷 Wang Xinlei(R&D Center,Misiliconn Semiconductor Technologies Co.,Ltd.,Foshan 528311,China)

机构地区：[1]美垦半导体技术有限公司研发中心,广东佛山528311

出　　处：《广东化工》2022年第22期8-11,共4页Guangdong Chemical Industry

摘　　要：本文制备了石墨纤维填充聚偏氟乙烯和超高分子量聚乙烯(GF/PVDF/UPE)复合体系。实验结果表明,少量UPE的加入能够很好的消除NTC效应;PVDF/UPE的质量比对体系的室温电阻率和PTC效应均产生了显著的影响:随着UPE比例的增加,体积电阻呈现先减小后增大的变化趋势;少量UPE时,在160℃处出现单PTC效应,而后随着含量增加的复合物分别在140℃附近和160℃附近出现两次PTC效应。In this paper,PVDF/UPE Composites(GF/PVDF/UPE)filled with graphite fiber were prepared.The experimental results show that a small amount of UPE can effectively eliminate the NTC effect;The mass ratio of PVDF/UPE has a significant impact on the room temperature resistivity and PTC effect of the system:with the increase of the proportion of UPE,the volume resistance decreases first and then increases;When a small amount of UPE was added,a single PTC effect appeared at 160℃,and then two PTC effects appeared at 140℃and 160℃with the increase of the content of the composite.

关 键 词：石墨纤维 PVDF/UPE复合物 导电 正温度系数效应 负温度系数效应 

分 类 号：TQ[化学工程]