湿法聚乙烯锂电隔膜敏化辐射交联效应与性能研究  

Study on the Radiation Sensitized Crosslinking Effect and Properties of Wet Polyethylene Lithium Diaphragrn

作　　者：高俊娜 崔国士 何欢欢 束兴娟 张蕊蕊 GAO Junna;CUI Guoshi;HE Huanhuan;SHU Xingjuan;ZHANG Ruirui(Henan Key Laboratory for Radiation Chemistry Advanced Materials , Henan Kegao Radiation Chemical Technology Co. Ltd , Luoyang 471000 , China)

机构地区：[1]河南科高辐射化工科技有限公司河南省辐射化学新材料重点实验室,河南洛阳471000

出　　处：《河南化工》2020年第2期29-32,共4页Henan Chemical Industry

摘　　要：聚乙烯锂电隔膜利用三羟甲基丙烷三丙烯酸酯(TMPTA)白油分散液进行溶胀,然后电子束辐照。15 kGy辐照剂量下,改变TMPTA浓度(质量分数),这样能显著提高聚乙烯锂电隔膜的抗穿刺力及机械性能。3%TMPTA浓度下,随着电子束辐照剂量的增加,聚乙烯锂电隔膜性能发生明显变化。3%TMPTA、10 kGy时抗穿刺力最大为4.03 N,极限拉伸强度135.76 MPa。该发现对提高锂电池抵抗锂枝晶穿透锂电隔膜能力有重要意义。The lithium ion battery polyethylene separator is swollen with a trimethylolpropane triacrylate(TMPTA)white oil dispersion,then irradiates with an electron beam.Under the irradiation dose of 15 kGy,the puncture resistance and mechanical properties of the lithium ion battery polyethylene separator can be significantly improved by changing the concentration of TMPTA.At the concentration of 3%TMPTA,the performance of the lithium ion battery polyethylene membrane change significantly with increasing in the electron beam irradiation dose.The maximum puncture resistance is 4.03 N at 3%TMPTA and 10 kGy,and the ultimate tensile strength is 135.76 MPa.The finding is meaningful for improving the ability of lithium ion batteries to resist lithium dendrite penetrating lithium battery separators.

关 键 词：电子束 TMPTA 聚乙烯 

分 类 号：TQ152[化学工程—电化学工业]