CH-S04对熔体微分电纺聚乳酸纤维的增强改性研究  

Study on enhancement modification of melt⁃differential electrospun poly(lactic acid)fiber with CH⁃S04

作　　者：李万隆 杨卫民[1] 王朔 李长金 张杨[1] 谭晶[1] 阎华[1] 李好义[1] LI Wanlong;YANG Weimin;WANG Shuo;LI Changjin;ZHANG Yang;TAN Jing;YAN Hua;LI Haoyi(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Sinopec(Beijing)Chemical Research Institute Co,LTD,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]中石化(北京)化工研究院有限公司,北京100029

出　　处：《中国塑料》2025年第2期1-5,共5页China Plastics

基　　金：国家重点研发计划(2022YFB3804204);中国石化总部科技部项目(222014)。

摘　　要：引入一种有机无机复合成核剂CH-S04用于提高增强聚乳酸(PLA)超细纤维力学性能。研究了不同纺丝温度、纺丝电压条件下PLA/CH-S04纤维膜的非等温结晶行为和CH-S04在多级牵伸工艺中的作用机理,并对PLA/CHS04纤维膜的力学性能进行了测试与表征。结果表明:当纺丝温度为220℃、纺丝电压为50 kV时,PLA/CH-S04纤维膜的结晶度分别达到最大值26.61%和32.32%,较于纯PLA纤维膜结晶度分别提升18.02%和23.73%;在不同的纺丝接收形式中,施加电压与气流辅助并且用辊子收集,CH-S04对PLA的结晶性能提升效果最佳,结晶度为36.66%,较于纯PLA纤维膜结晶度提升了28.07%;当纺丝温度为240℃,纺丝电压为50 kV时,PLA/CH-S04纤维膜拉伸强度为12.33 MPa,较于纯PLA纤维膜提高11.58%。In this study,an organic‑inorganic compounded nucleating agent(CH‑S04)was used to enhance the mechanical properties of poly(lactic acid)(PLA)microfibers.The non‑isothermal crystallization behavior of the resultant PLA/CH‑S04 fiber films as well as the action mechanism of CH‑S04 in the multistage drafting process were studied under different spinning temperatures and voltages,and their mechanical properties of PLA/CH‑S04 fiber films were characterized.The results indicated that when the spinning temperature was 220℃and the spinning voltage was 50 kV,the degrees of crystallinity of PLA/CH‑S04 fiber films reached maximum values of 27.12%at a spinning temperature of 220℃and 32.32%at a spinning voltage of 50 kV,which were 18.53%and 23.73%higher than that of pure PLA fiber film,respectively.In different spinning receiving forms,CH‑S04 achieved the best crystallization enhancing effect on PLA when applying voltage and air flow together with collecting by a roller.The resulting PLA/CH‑S04 fiber film obtained a degree of crystallinity of 36.66%,which was 28.07%higher than that of pure PLA fiber film.The PLA/CHS04 fiber film obtained tensile strength 12.33 MPa at a spinning temperature of 240℃and a spinning voltage of 50 kV,which was 11.58%higher than that of pure PLA fiber film.

关 键 词：静电纺丝 聚乳酸 熔体 结晶度 力学强度 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]