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聚酰亚胺/多壁碳纳米管杂化薄膜力学性能研究 被引量:4

Mechanical properties of polyimide/multi-walled carbon nanotubes hybrid film
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摘要 采用不同长径比的多壁碳纳米管通过原位聚合法制备一系列多壁碳纳米管改性的聚酰胺酸胶液,并经热亚胺化途径制备聚酰亚胺杂化薄膜。利用扫描电子显微镜(SEM)观察薄膜的断面形貌,采用红外光谱仪(FT-IR)分析酸化前后多壁碳纳米管表面官能团的变化,并采用电子万能试验机对薄膜的力学性能进行测试,分析了多壁碳纳米管的含量和长径比对杂化薄膜力学性能的影响。结果表明,小掺杂量下,长径比大的多壁碳纳米管更有利于增强PI杂化薄膜的拉伸强度;而长径比小的多壁碳纳米管使杂化薄膜拉伸强度提高的碳纳米管掺杂量范围更宽。 The polyamide acid with multiwall carbon nanotubes (MWNTs)which have different aspect ratio was prepared through in-situ polymerization method,and then the hybrid PI films were gained through the thermal imidization process.The section morphology of films were analysised by scanning electron microscope(SEM);the change of chemical functional group on multiwall carbon nanotubes acidulated and not acidulated were analy-sised by Fourier transform infrared spectrometer (FT-IR);the influence of the aspect ratio and contain of MWNTs on mechanical properties of hybrid films were analyzed by electronic universal experiment machine. The results showed that the aspect ratio of MWNTs was more advantageous to enhance the tensile strength of hybrid PI films at the small of doping amounts;the upper limit of contain of the MWNTs of small aspect ratio which modify polyimide films that the tensile strength was higher than the tensile strength of polyimide films.
出处 《功能材料》 EI CAS CSCD 北大核心 2014年第24期24035-24040,共6页 Journal of Functional Materials
基金 黑龙江省电介质工程国家重点实验室资助项目(DE2012B02)
关键词 聚酰亚胺 多壁碳纳米管 杂化薄膜 力学性能 polyimide multi-walled carbon nanotubes hybrid films mechanical propert
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