摘要
通过原位插层聚合制备了聚甲基丙烯酸甲酯/膨胀石墨纳米导电复合材料,其室温导电渗滤阈值约为3%(质量分数),当膨胀石墨的质量分数为8%时,室温电导率可高达60 S/cm。通过TEM、SEM观察了复合材料的形貌,用DSC测定其热力学性能并探讨了不同外加电压对PMM A/膨胀石墨纳米导电复合材料体积电导率的影响,同时研究了复合材料的拉伸强度。
In this work, poly （methyl methacrylate） （PMMA）/expanded graphite （EG） nanocomposites was synthesized by a new polymerization method. The volume electrical conductivity of the nanocomposite prepared by this way is very high （when the content of EG is about 8~, the conductivity an reach 60 S/cm）. The structure of the nanocomposite was investigated by SEM, TEM, IR, and XRD. And it is found that applied voltage is the important parameters of governing the electrical conductivity of PMMA/EG nanoeomposites. The thermal phase transitions and mechanical properties were also discussed.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第6期209-212,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50443011)
