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- 2016
环氧化功能碳纳米管改性氨基PPS
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Abstract:
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。 Poly(phenylene sulfide) (PPS) is an insulating and hydrophobic material, which somewhat limits its certain applications in some specific fields. The amino-group modified PPS (NPPS) was prepared, and NPPS was further modified with epoxy-functionalized muti-walled carbon nanotubes (EFMWCNTs) by solution blending method via covalent interaction, and EFMWCNTs/NPPS conductive composites were prepared. The structure and properties of composites were characterized by various techniques including FTIR, XPS, XRD, FESEM, TEM, DSC, TGA and semiconductor powder resistivity tester. Characterization results show that when amino-group was introduced into the chain segment of PPS, the melting peak and crystalline peak of PPS disappear. After NPPS is further modified with EFMWCNTs, compared with NPPS, the thermal stability of EFMWCNTs/NPPS conductive composites increases because EFMWCNTs were attached onto NPPS by covalent bond which is effective to disperse EFMWCNTs into NPPS matrix. Electrical conductivity of EFMWCNTs/NPPS composites increases with the increase of EFMWCNTs content. The electrical conductivity of composite is 6.1×10-2 S/cm with loading 10wt% EFMWCNTs. 国家自然科学基金（51173131，21376177）；天津市自然基金重点项目（15JCZDJC37000）；中国纺织工业联合会应用基础研究（J201406）；山西省科技创新项目（201401002）；中国石油化工股份有限公司项目（208068，211100，215038）
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