高校化学工程学报2024，Vol.38Issue(4)：625-635,11.DOI:10.3969/j.issn.1003-9015.2024.04.011
锂离子电池湿法PE隔膜生产工艺用白油变色原因
Study on white oil discoloration in wet PE separator production for lithium ion battery
摘要
Abstract
White oil is used as a pore-forming agent in the production of wet polyethylene(PE)separator for lithium ion battery.In order to explore yellow appearance and yellow substances in white oil recycling processes,Fourier transform infrared spectroscopy was employed to investigate the relationship between structural changes and yellowing resistance of white oil,PE,and antioxidant 1010(I1010)under simulated production conditions.Additionally,the relationship between structure change,yellowing resistance and the ratio of white oil,PE and I1010 mixtures were studied.Furthermore,the yellow substance in recovered oil was qualitatively analyzed using high performance liquid chromatography and high resolution mass spectrometry.The results show that oxidation of white oil,PE,and I1010 occurred in the PE separator production process,and the production of the yellow substance is the results of the synergistic action,in which PE and I1010 are the main factors.The yellow substances were identified as aromatic esters and I1010.This research provides valuable insights for improving white oil recycling technology.关键词
白油/外观发黄/协同作用/红外光谱技术/高分辨质谱技术Key words
white oil/appearance yellowing/synergistic action/infrared spectroscopy/high-resolution mass spectrometry分类
化学化工引用本文复制引用
李静,冯祎平,吕逍雨,徐冰冰,莫学坤..锂离子电池湿法PE隔膜生产工艺用白油变色原因[J].高校化学工程学报,2024,38(4):625-635,11.基金项目
浙江大学-浙江正信石油科技有限公司项目 （）
国家自然科学基金(22178306) （22178306）
浙江省基础公益研究计划(LGC22B050013). （LGC22B050013）
