摘要
采用不同分子量聚乙烯吡咯烷酮(PVP)对碳晶进行修饰,并将修饰好的碳晶与水性环氧树脂制备成环氧树脂电热膜。分别采用扫描电镜、红外光谱和接触角等技术对制得的碳晶进行分析表征,并对制得的电热膜进行体积电阻率测试。结果表明:PVP通过氢键吸附于碳晶表面,会对碳晶的分散性与分散稳定性有提高的作用,且PVP的分子量不同,对分散性的影响也不同,PVPK30修饰的碳晶分散性及分散稳定性最佳;PVP修饰的碳晶电热膜比未经PVP修饰的碳晶电热膜的电学性能明显提高,与未经PVP修饰的碳晶电热膜对比,经由PVPK30修饰的碳晶电热膜的电阻率降低了95%,电导率提高了31倍。
Carbon crystal was modified by polyvinylpyrrolidone(PVP) with different molecular weight, and the modified carbon crystal and waterborne epoxy(WBE) resin were used to prepare BE electrothermal film.The carbon crystal was characterized by SEM,FT-IR and contact angle, and the volume resistivity of the electrothermal film was measured.The results showN that PVP adsorbed on the surface of carbon crystal through hydrogen bond can improve the dispersion and dispersion stability of carbon crystal, and the different molecular weight of PVP had different effects on the dispersion, PVPK 30 modified carbon crystal had the best dispersion and dispersion stability.The electrical properties of PVP modified carbon crystal electric heating film were significantly better than those of non PVP modified carbon crystal electric heating film, which was similar to those of non PVP modified carbon crystal electric heating film Compared with the carbon crystal electric heating film, the resistivity of the carbon crystal electric heating film modified by PVPK 30 was reduced by 95%,and the conductivity was increased by 31 times.
作者
葛铁军
谢天齐
李瑞雄
Ge Tiejun;Xie Tianqi;Li Ruixiong(Plastic Engineering Research Center of Shenyang University of Chemical Technology,Shenyang 110142;Liaoning Polymer Materials Engineering and Technology Research Center,Shenyang 110142;Shenyang Huada and Kangping Plastic Woven Research Institute,Shenyang 110142)
出处
《化工新型材料》
CAS
CSCD
北大核心
2022年第8期166-170,共5页
New Chemical Materials
基金
辽宁省重点研发计划项目(2017304004)。
