不锈钢纤维-石墨/ABS-PVDF复合材料相转变与导电特性  

Phase transition and conductive properties of stainless steel fiber-graphite/ABS-PVDF composites

作　　者：魏文闵 杨敏[1] 王学林 张荣[1] 刘清亭[1] 胡圣飞[1] WEI Wenmin YANG Min WANG Xuelin ZHANG Rong LIU Qingting HU Shengfei(Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China Hubei Jinke Environment Protection Technology Co. , Ltd, Jingzhou 434001, China)

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,武汉430068 [2]湖北金科环保科技股份有限公司,荆州434001

出　　处：《复合材料学报》2016年第11期2477-2484,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51503061);湖北省科技厅支撑计划(2015BAA094);湖北省自然科学基金(2015CFB322)

摘　　要：以丙烯腈-丁二烯-苯乙烯共聚物（ABS）和聚偏氟乙烯（PVDF）为基体,不锈钢纤维（SSF）和石墨为导电填料,通过熔融法制备SSF-石墨/ABS-PVDF导电复合材料,探究了其导电性能及流变性能。讨论了SSF/ABSPVDF复合体系中导电填料的分布、导电性能及基体的相转变行为。结果表明：SSF倾向于分布在PVDF相中,当SSF含量为20wt%时,SSF/ABS-PVDF复合材料的电阻率随PVDF比例增加,先降低经历一个平台期后继续降低。PVDF在ABS-PVDF复合基体中含量为30wt%~40wt%和70wt%~80wt%时,SSF/ABS-PVDF复合材料出现相态转变行为。当SSF含量为16.84wt%和25wt%~30wt%时SSF-石墨/ABS-PVDF复合材料出现二次逾渗的现象,且与其动态模量及复数黏度的变化相符合。The electrical properties and rheology for polymer based conductive composites were investigated,in which acrylonitrile-butadiene-styrene copolymer（ABS）and polyvinylidene fluoride（PVDF）were used as the matrix and stainless steel fibers（SSF）and graphite were used as conductive fillers,and the SSF-graphite/ABS-PVDF conductive composites were prepared by melt-blending method.The distribution of conductive filler,the conductive property and phase transition behavior of SSF/ABS-PVDF composite system were studied.The results show that SSF tends to locate in the PVDF phase,and when the SSF content is 20wt%,the electrical resistivity of SSF/ABSPVDF composites decreases firstly,and after then reaches a platform region,finally decreases again with the increase of PVDF ratio.Phase transition behavior occurs when content of PVDF is 30wt%-40wt% and 70wt%-80wt%in ABS-PVDF composite matrix.A double percolation phenomenon appeares in the SSF-graphite/ABSPVDF composites when content of SSF is 16.84wt% and 25wt%-30wt% which is consistent with the tendency of dynamic modulus and complex viscosity.

关 键 词：ABS PVDF 不锈钢纤维 石墨 导电复合材料 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业]