热处理温度对聚丙烯微孔膜性能的影响  

Properties of Polypropylene Separator with Different Heat Temperatures

作　　者：张启蒙[1,2] 姚培[1,2] 刘媛[1,2] 张和森 杨京昊 李树白[1,2] ZHANG Qimeng;YAO Pei;LIU Yuan;ZHANG Hesen;YANG Jinghao;LI Shubai(School of Chemical and Pharmaceutical Engineering,Changzhou Vocational Institute of Engineering,Changzhou,Jiangsu 213164,China;Green Chemical Research Institute,Changzhou Vocational Institute of Engineering,Changzhou,Jiangsu 213164,China)

机构地区：[1]常州工程职业技术学院化工与制药工程学院,江苏常州213164 [2]常州工程职业技术学院绿色技术研究所,江苏常州213164

出　　处：《塑料》2020年第6期79-83,共5页Plastics

基　　金：国家职业院校教师教学创新团队项目(教师函[2019]7号);常州市科技社会发展项目(CE20195007);江苏省高等职业教育高水平骨干专业建设项目(苏高教[2017]17号文,第80号);2019年江苏省大学生创新创业项目(201913102004Y、201913102006Y);江苏省高职院校青年教师企业实践培训资助项目(2019QYSJ011);常州工程职业技术学院校级科研项目及科技创新团队建设成果(2020)。

摘　　要：聚丙烯(PP)微孔膜具有良好的化学稳定性和力学性能,孔隙分布较为均匀。采用干法单向拉伸工艺,在不同的热处理温度(130℃、140℃和150℃)和不同的热拉温度(135℃、145℃、和155℃)下,制备了聚丙烯(PP)微孔膜。研究了不同热处理温度对聚丙烯微孔膜结晶、熔融行为、微观形貌以及孔隙率的影响。结果表明,随着热处理温度的升高,微孔膜的结晶度逐渐增加,晶体结构更加完善,晶体尺寸逐渐降低,微孔形貌更加规整且孔隙率升高。随着热拉温度的升高,微孔膜的结晶度变化不明显,但是,微孔的形貌结构逐渐清晰完善,孔隙率得到提升。当热处理温度为150℃,热拉温度为155℃时,孔隙率达到最高,为59.2%。Polypropylene(PP)microporous membrane had good chemical stability,and mechanical properties and uniform pore distribution.Polypropylene(PP)microporous membranes were prepared by a dry uniaxial stretching process at heat treatment temperatures of 130,140 and 150℃and hot drawing temperature of 150℃,135,145,and 155℃,respectively.The effects of process conditions on the crystal melting behavior and microstructure of microporous membranes were investigated in detail.The results showed that as the heat treatment temperature increased,the crystallinity of the microporous membrane was increased gradually,the crystal structure of the microporous membrane was more perfect,the crystal size was decreased,the morphology of the micropores was more regular,and the porosity was increased.With the increase of the heat drawing temperature,the crystallinity of the microporous membrane did not change significantly,but the morphology of the micropores was gradually distinct and perfect,and the porosity was improved.When the heat treatment temperature was 150℃,the hot drawing temperature was 150℃,the porosity was slightly higher than that prepared at the other heat treatment temperatures,it was 59.2%.

关 键 词：聚丙烯 微孔膜 热处理 结晶度 孔隙率 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]