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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。
Polyphenylene sulfide (PPS) is an insulating and hydrophobic material, to a certain extent, limited its application in some specific areas. EFMWCNTs / NPPS conductive composites were prepared by solution blending using amino-modified PPS (NPPS) and covalent bonding of epoxy-functionalized multi-walled carbon nanotubes (EFMWCNTs) to NPPS. The structure and properties of the composites were characterized by FTIR, XPS, XRD, FESEM, TEM, DSC, TGA and semiconductor powder conductivity tester. The characterization results show that the melting peak and crystallization peak of PPS disappear after the introduction of amino group on the segment of PPS. NPPS EFMWCNTs further modified, EFMWCNTs / NPPS conductive composites thermal stability increased compared to NPPS, because the covalent interaction between EFMWCNTs and NPPS effectively improve the dispersion of EFMWCNTs in NPPS. The conductivity of EFMWCNTs / NPPS composites increased with the addition of EFMWCNTs, and the conductivity of the composites was 6.1 × 10-2 S / cm when 10wt% EFMWCNTs were added.