纳米TiO_2/PVDF-HFP微孔膜的制备与性能  

Characterization of Microporous Films of TiO_2/PVDF-HFP

作　　者：张拴芬[1] 杨阳[1] 辛冠琼[1] 张学俊[1] 

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《广州化工》2013年第6期92-94,共3页GuangZhou Chemical Industry

基　　金：山西省自然科学基金(No.2011011022-4);山西省高等学校大学生创新创业训练项目资助

摘　　要：采用溶剂挥发法并以N,N二甲基甲酰胺为溶剂制备出聚偏氟乙烯-六氟丙烯(PVDF-HFP)/二氧化钛(TiO_2)聚合物微孔膜。通过对微孔膜的红外光谱、吸液率、力学性能及热重性能的测试分析,结果表明TiO_2含量为15%的微孔膜的吸液率为190%,拉力为46 N,断裂延伸率为130%,分解温度为250℃。可以满足锂离子电池的商业使用要求,具有广阔的应用前景。The polymer microporous film of polyvinylidene fluoride -hexafluoropropylene（ PVDF -HFP）/nano titani- um dioxide （ TiO2 ） was prepared by evaporation method in the solvent of N, N - dimethyl formamide. The structures and thermal properties of separator were characterized by IR spectroscopic, TG. The absorption rate and mechanical properties of the PVDF/poly（ AN- co- PEGDMA） microporous membranes were tested. The results showed that the TiO2 additive amount heavily affected characterization of modified PVDF - HFP microporous membranes. When the TiO2 additive amount TiO2 was 15% , the microporous membranes had great application value in lithium - ion battery.

关 键 词：聚偏氟乙烯-六氟丙烯 二氧化钛(TiO2) 微孔膜 

分 类 号：O632.21[理学—高分子化学]