摘要
以石墨纤维(GF)、乙炔炭黑(CB)为导电填料,聚偏氟乙烯(PVDF)为基体,通过熔融共混方法分别制备GF/PVDF、CB/PVDF导电复合材料。讨论了导电填料形状、含量对复合材料正温度系数效应(PTC)的影响。并通过实验现象分析认为具有长径比结构的GF是导电复合材料负温度系数效应(NTC)减弱的原因,结合差示扫描量热分析(DSC)证明PTC效应与聚合物结晶熔融有直接关系。
The composite were prepared with poly （vinylidene fluoride） （PVDF） as matrix, graphite fiber （GF）, acetylene black （ CB ） as fillers respectively by melted mixing. Conductive filler shape and content influence on the positive temperature coefficient （PTC） properties of the conductive composite were discussed. Negative temperature coefficient （NTC） was weakened for GF having an aspect ratio structure, combined with DSC analysis showed that crystalline melt related to the PTC effect directly
出处
《塑料》
CAS
CSCD
北大核心
2014年第5期42-44,共3页
Plastics
