作　　者： (苗贝）; (张亚楠）; (谭少博）; (张志成）;

机构地区： 西安交通大学理学院,陕西西安710049

出　　处： 《石油化工》 2017年第6期739-743,共5页

摘　　要： 采用溶液流延法成膜制备了不同聚甲基丙烯酸甲酯(PMMA)含量的PMMA/偏氟乙烯与三氟乙烯共聚物(P(VDFTr FE))共混试样。采用FTIR,XRD,DSC等方法对共混试样进行了表征,研究了不同PMMA含量对共混试样的结晶、介电、储能性能的影响。表征结果显示,不同热处理方式及PMMA的引入不会改变P(VDF-Tr FE)的β晶型;随PMMA含量的增加,共混试样的结晶度降低。实验结果表明,加入PMMA后导致共混试样的介电常数、介电损耗、能量损耗降低,改善了材料的介电储能性能。 A series of polymethyl methacrylate（PMMA）/polyvinylidene fluoride-co-trifluoroethylene（P（VDE-Tr FE）） composite films with various contents of PMMA had been fabricated by solution casting method. The properties including crystallization,dielectric,energy storgy were characterized by DSC,FTIR and XRD. As a result,β crystal type of P（VDF-Tr FE） unchanged regardless of different thermal approach and introduced of PMMA. The introduced PMMA leads to continuously reduced crystallinity and crystal size of PMMA/P（VDF-Tr FE）. As a consequence,the dielectric performance of P（VDF-Tr FE） was improved by the introduction of PMMA.

关 键 词： 聚甲基丙烯酸甲酯 偏氯乙烯与三氟乙烯共聚物共混 结晶 介电性能 储能性能