科学研究

勃姆石改性UHMWPE锂电池隔膜性能的研究

展开
  • 上海化工研究院有限公司,上海200062
张玉梅(1968-),女,硕士,高级工程师,主要从事超高分子量聚乙烯改性和成型加工方面的研究。

收稿日期: 2020-01-13

  网络出版日期: 2022-11-01

Study on the performance of boehmite modified UHMWPE separator of lithium battery

Expand
  • Shanghai Research Institute of Chemical Industry Co. ,Ltd. ,Shanghai 200062

Received date: 2020-01-13

  Online published: 2022-11-01

摘要

通过不同配比的勃姆石(BH)对超高分子量聚乙烯(UHMWPE)锂电池隔膜进行了共混改性,研究其对锂电池隔膜穿刺强度、拉伸性能、耐热性能和结晶性能等影响。结果表明:当BH质量含量为4%时,锂电池隔膜综合性能较好,穿刺强度提高20%、透气度提升25%、MD方向热收缩降低60.7%,TD方向热收缩降低51.1%。扫描电镜结果表明:当BH质量含量为4%时,BH的颗粒嵌在UHMWPE基体树脂中,表面有多孔网络缠结,有利于提高BH与UHMWPE之间的界面结合力。

本文引用格式

张玉梅, 茆汉军, 王新威 . 勃姆石改性UHMWPE锂电池隔膜性能的研究[J]. 化工新型材料, 2020 , 48(7) : 171 -174 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.039

Abstract

The ultra-high molecular weight polyethylene (UHMWPE) membrane of lithium battery was modified by blending by different proportion of bomer stone (BH).The results showed that when BH content was 4wt%,the comprehensive performance of separator was good,the puncture strength increased by 20%,the permeability increased by 25%,the thermal contraction in MD direction decreased by 60.7%,and the thermal contraction in TD direction decreased by 51.1%.SEM results shown that when the content of BH was 4wt%,BH particles were embedded in UHMWPE matrix resin,and the surface was entangled with porous network,which was conducive to improving the interfacial binding force between BH and UHMWPE.

参考文献

[1] Wakihara M.Recent developments in lithium ion batteries[J].Materials Science and Engineering,2001,33(4):109-134.
[2] 王畅,吴大勇.锂离子电池隔膜及技术进展[J].储能科学与技术,2016,5(2):120-128.
[3] 洪柳婷,王莉,叶海木,等.聚烯烃锂离子电池隔膜的研究进展[J].高分子通报,2017(6):59-67.
[4] Ooms F G B,Kelder E M,Schoonman J,et al.Performance of solupor® separator materials in lithium ion batteries[J].Journal of Power Sources,2001,97-98:598-601.
[5] Shen L,Peng M,Qiao F,et al.Preparation of microporous ultra high molecular weight polyethylene(UHMWPE) by thermally induced phase separation of a UHMWPE/liquid paraffin mixture[J].Chinese Journal of Polymer Science (English Edition),2008,26(6):653-657.
[6] 赵文明,杨健,王晓琳,等.热致相分离法制备高聚物微孔结构的研究进展[J].高分子材料科学与工程,2007,23(6):1-5.
[7] 耿忠民.电池隔膜用HDPE微孔膜的制备和研究[J].电源技术,2009,33(11):977-979.
[8] Zhang C,Zhu B,Ji G,et al.Studies on nonisothermal crystallization of ultra-high molecular weight polyethylene in liquid paraffin[J].Journal of Applied Polymer Science,2006,99(5):2782-2788.
[9] Chen J Z,Wang X B,Liu W J.Crystallization kinetics of polyethylene/paraffin oil blend sheets formed by thermally induced phase separation with different molecular weights of polyethylene[J].J Therm Anal Calorim,2014,118:1649-1661.
文章导航

/