摘要
以KNG-150石墨烯微片(GNPs)为导电填料,PP(聚丙烯)/HDPE(高密度聚乙烯)复合体系为基体材料,制备石墨烯微片/PP/HDPE导电复合材料,研究GNPs质量分数,PP/HDPE质量比对材料的正温度系数效应(PTC)强度和负温度系数效应(NTC)强度的影响.结果表明:GNPs质量分数处在渗滤区间6%时,材料的PTC强度达到最大值;PP的加入可以有效地提高材料的PTC强度,同时还抑制了NTC效应;当PP/HDPE质量比为3:7时,效果最佳,此时PTC强度为5.58,NTC强度仅为0.25.
In this paper,the KNG-150 graphene nanoplatelets（GNPs） was used as the conductive filler,and the polypropylene（PP） /high density polyethylene（HDPE） composite system were used as the matrix material,produced the GNPs/PP/HDPE conductive composite,the effect of the GNPs contents and the proportion of PP/HDPE on the intensity PTC and NTC are invented.The result showed that the intensity PTC of this composite reach the max when the content of the GNPs was 6%;The PTC intensity efficiently enhanced and the NTC intensity was inhibited as the PP was added into the composite.When the proportion of m（PP）∶m（HDPE） was 3∶7,this composite reached the best result,the PTC and NTC intensity was 5.58 and 0.25.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2012年第5期522-527,共6页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(20574025)
中央高校基本科研业务费专项资金资助项目(JB-JC1001)
关键词
石墨烯微片
正温度系数效应
负温度系数效应
聚丙烯
高密度聚乙烯
Graphene Nanoplatelets
positive temperature coefficient
negative temperature coefficient
polypropylene
high-density polyethylene
