同步双向拉伸工艺对锂电池隔膜成膜性能的影响  

Effect of Synchronous Biaxial Stretching Process on the Film-forming Property of Lithium Battery Separator

作　　者：黄孙息[1] 魏君陶 陈志平[1] 冯羽风 钟立松[1] 刘莉 HUANG Sunxi;WEI Juntao;CHEN Zhiping;FENG Yufeng;ZHONG Lisong;LIU Li(Guilin Electrical Equipment Scientific Research Institute Co., Ltd., Guilin 541004, China;School of Mechanical, Electrical ＆ Information Engineering, Shangdong University（Weihai）, Weihai 264209, China)

机构地区：[1]桂林电器科学研究院有限公司,广西桂林541004 [2]山东大学(威海)机电与信息工程学院,山东威海264209

出　　处：《绝缘材料》2018年第6期15-19,共5页Insulating Materials

基　　金：桂林市科学研究与技术开发计划(20140104-1)

摘　　要：采用双螺杆挤出机和三辊压延机制备了高密度聚乙烯-石蜡厚片,通过静态双向拉伸试验机对厚片进行拉伸试验,研究拉伸速率、拉伸温度和拉伸倍率对厚片成膜性能的影响。结果表明:当拉伸倍率为5×5倍,拉伸时间为10~25 s,拉伸温度为100~110℃时,厚片较易拉伸成膜;随着拉伸倍率的增大,厚片所制得隔膜的孔径和拉伸强度随之增大。HDPE-paraffim thick sheets were prepared using twin screw extruder and tri roll calender. The thick sheets were stretched by static biaxial tensile test machine and the effects of stretching rate, stretching temperature, and stretching ratio on the film-forming properties of the thick sheets were investigated. The results show that when the stretching ratio is 5×5 times, the stretching time is 10-25 s, and the stretching temperature is 100~110 ℃, the thick sheets are easy to be stretched into films. The pore size and tensile strength of the separator increase with the increase of stretching ratio.

关 键 词：锂电池隔膜 高密度聚乙烯 双向拉伸 成膜性能 

分 类 号：TM206[一般工业技术—材料科学与工程]