中国造纸2025，Vol.44Issue(10)：67-76,10.DOI:10.11980/j.issn.0254-508X.2025.10.008
温度处理对纤维素基隔膜性能的影响研究
Study on the Effect of Temperature Treatment on the Properties of Cellulose-based Separators
摘要
Abstract
In this study,the influence mechanism of temperature treatment on the multi-scale performance of two quantitative cellulose-based separators(E20-L/E40-H)was systematically investigated.The physical properties,mechanical properties,structural evolution,ther-mal and electrical properties of the separator were comprehensively characterized by medium and high temperature(125℃/48 h,250℃/20 min)and low temperature(-40℃/48 h,-60℃/48 h)treatment.The results showed that extreme low temperature(-60℃)increased the liquid absorption rate of E40-H from 104.6%at room temperature to 113.0%,but E20-L decreased from 84.6%at room temperature to 81.3%,and high temperature(250℃)significantly reduced the liq-uid absorption rate of both.125℃treatment enhanced the mechani-cal strength through hydrogen bond enhancement(the burst strength of E20-L increased from 81.4 kPa to 86.1 kPa at room temperature,while that of E40-H increased from 96.3 kPa to 105.3 kPa),and 250℃led to performance degradation due to cellulose degradation.The crystallinity index of E20-L decreased from 71.6%at room tem-perature to 47.1%at-60℃,revealing that the low-quantitative sepa-rator was more sensitive to extreme low temperature.Structural analy-sis confirmed that high temperature destroyed the fiber structure by pyrolysis,which led to fiber collapse,and low temperature induced kera-tinization.The electrical performance showed an antagonistic law of increasing breakdown voltage at low temperature but increasing ESR and overall deterioration at high temperature.关键词
纤维素基隔膜/吸液率/透气度/抗张强度/击穿电压Key words
cellulose-based separator/liquid absorption rate/air permeability/tensile strength/breakdown voltage分类
轻工业引用本文复制引用
张亮,游艳芝,刘成跃,李南华,李丽姿,孔庾玲,巫彩燕,苏萃扬,胡志军,陈华..温度处理对纤维素基隔膜性能的影响研究[J].中国造纸,2025,44(10):67-76,10.基金项目
浙江省博士后科研项目择优资助项目(ZJ2023167) （ZJ2023167）
浙江科技大学环境与资源学院青年教师创新研究项目(HZQY20241) （HZQY20241）
浙江省丽水市遂昌县重点研发计划项目(SCX2023ZDYF02). （SCX2023ZDYF02）
