丁苯橡胶为黏合剂的聚丙烯硫酸钡复合膜的制备  

Preparation of BaSO_4 Composite Polypropylene Film Using Styrene Butadiene Rubber as Adhesive

作　　者：杨书廷[1,2] 谷继峰[1,3,2] 尹艳红[1,2] 马文豪[1,2] YANG Shu-ting GU Ji-feng YIN Yan - hong MA Wen - hao(School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, Henan, China National and Local Joint Engineering Laboratory for Motive Power and Key Materials, Xinxiang 453007, Henan, China)

机构地区：[1]河南师范大学化学化工学院,河南新乡453007 [2]动力电源及关键材料国家地方联合工程实验室,河南新乡453007 [3]河南师范大学物理与材料科学学院,河南新乡453007

出　　处：《功能高分子学报》2016年第4期463-468,共6页Journal of Functional Polymers

基　　金：国家高技术研究发展计划(No.2013AA110104)

摘　　要：以丁苯橡胶(SBR)为黏合剂、羧甲基纤维素钠(CMC)为分散剂、聚丙烯(PP)膜为基体,在其两侧涂覆厚度2μm的硫酸钡(BaSO_4)颗粒,得到一种复合电池隔膜。对复合膜的形貌、润湿性、热稳定性、电导率等进行了研究。结果表明:BaSO_4涂层均匀涂布于PP膜表面,使复合膜中小于200nm的孔增多。同PP膜相比,复合膜具有较小的热收缩率和较好的润湿性。而与聚偏氟乙烯(PVDF)黏合剂相比,SBR具有更强的黏合性。以复合膜做为隔膜的电池在不同电流密度下具有更高的容量保持率。A new kind of BaS04 composite polypropylene （PP） separator for lithium-ion batteries （LIB） was successfully prepared using styrene butadiene rubber （SBR） as binder and carboxymethyl cellulose sodium （CMC） as dispersing agent. Structure, pore size distribution, wettability and absorbency, thermal dimensional stability and ionic conductivity of the composite separator were discussed. Results show that BaS04 particles are evenly coated on the surface of PP film. Pores smaller than 200 nm increase because of the existing of the coating layer. Compared with PP membrane, the composite membrane has better thermal stability and good wettability. And the bond strength of SBR is larger than poly （vinylidene fluoride） （PVDF）. LIB using the composite membrane shows a higher capacity retention rate with different current densities.

关 键 词：丁苯橡胶 硫酸钡 隔膜 

分 类 号：TM912.9[电气工程—电力电子与电力传动]