聚苯硫醚(PPS)是绝缘和疏水性材料,一定程度上限制了其在某些特定领域的应用.利用氨基改性PPS(NPPS),并利用环氧功能化多壁碳纳米管(EFMWCNTs)与NPPS共价作用形式,采用溶液共混制备了EFMWCNTs/NPPS导电复合材料.利用FTIR、XPS、XRD、FESEM、TEM、DSC、TGA和半导体粉末电导率测试仪系统表征了复合材料的结构与性能.表征结果显示:PPS的链段上引入氨基后,PPS的熔融峰和结晶峰消失.NPPS利用EFMWCNTs进一步改性后,EFMWCNTs/NPPS导电复合材料的热稳定性相比NPPS增加,原因是EFMWCNTs与NPPS之间的共价作用有效提高了EFMWCNTs在NPPS中的分散性.EFMWCNTs/NPPS复合材料的电导率随EFMWCNTs添加量增加而增加,添加10wt％的EFMWCNTs时,复合材料的电导率为6.1×10-2 S/cm.
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