摘要
以高密度聚乙烯(HDPE)和聚丙烯(PP)为原料,采用三层共挤工艺一次成型挤出PP/PE/PP复合基膜,经过热处理退火后直接进行双向热拉伸过程,制得的PP/PE/PP三层复合隔膜具有比较均一的微孔尺寸和较好的热尺寸稳定性,同时对三层复合隔膜的成孔及工作机理进行了分析,该复合隔膜可满足新能源汽车用动力锂电池的使用要求。
PP/PE/PP composite basement membrane was extruded by three-layer co-extrusion process with high density polyethylene (HDPE) and polypropylene (PP) as raw materials. After annealing and heat treatment, the PP/PE/PP three-layer composite diaphragm was directly biaxially stretched. The prepared three-layer composite diaphragm has relatively uniform micropore size and better thermal dimensional stability. At the same time, the pore formation and working mechanism of the three-layer composite diaphragm were studied. The analysis shows that the composite diaphragm can meet the application requirements of power lithium batteries for new energy vehicles.
作者
胡伟
杨建军
何祥燕
张德顺
吴磊
李汪洋
吴爱平
吴庆云
张建安
吴明元
刘久逸
HU Wei;YANG Jian-jun;HE Xiang-yan;ZHANG De-shun;WU Lei;LI Wang-yang;WU Ai-ping;WU Qing-yun;ZHANG Jian-an;WU Ming-yuan;LIU Jiu-yi(Tianhong New Material Co. Ltd.,Jieshou City,Jieshou 243002 ,China;Institute of Chemistry and Chemical Engineering and Key Laboratory of Green Polymer,School of Chemical Engineering of Anhui University,Hefei 230601,China)
出处
《安徽化工》
CAS
2019年第5期35-37,42,共4页
Anhui Chemical Industry
基金
安徽省发改委“新能源汽车暨智能网联汽车创新工程项目”(2018年)
关键词
锂离子电池
聚烯烃
复合隔膜
共挤工艺
成孔性能
lithium ion battery
polyolefin
composite diaphragm
co-extrusion process
pore-forming properties
