熔喷无纺布用聚丙烯的结晶及纺丝性能  

Crystallization and Spinning Performance of Polypropylene for Melt-Spinning Nonwovens

作　　者：徐萌[1] 李杰[1] 初立秋[1] 白弈青 张师军[1] Xu Meng;Li Jie;Chu Liqiu;Bai Yiqing;Zhang Shijun(Beijing Research Institute of Chemical Industry,SINOPEC,Beijing, 100013)

机构地区：[1]中国石油化工股份有限公司北京化工研究院,北京100013

出　　处：《现代塑料加工应用》2020年第5期1-3,共3页Modern Plastics Processing and Applications

基　　金：国家重点研发计划(2016YFB0302000)。

摘　　要：对比了直接聚合法和化学降解法生产的熔喷无纺布用聚丙烯(PP)的相对分子质量分布和熔融结晶性能,考察了直接聚合法生产PP的纺丝性能和熔喷无纺布的纤维形貌。结果表明:直接聚合法生产的PP相对分子质量分布较宽,数均相对分子质量较低;直接聚合法生产的PP熔融温度较低,结晶性能优于化学降解法生产的PP;直接聚合法PP原料对熔喷无纺布的制备过程有一定影响。The relative molecular mass distribution and melt crystallization properties of polypropylene(PP)for melt-spinning nonwovens produced by polymerization and chemical degradation were compared.The melt-spinning performance and nonwovens morphology of PP produced by polymerization were investigated.The results show that the relative molecular mass distribution of PP produced by polymerization is relatively wide and the number-average relative molecular mass is relatively low.PP produced by polymerization has lower melting temperature and better crystallization performance compared with PP produced by chemical degradation.Moreover,PP produced by polymerization has influence on the preparation process of melt-spinning nonwovens.

关 键 词：直接聚合法 熔喷 聚丙烯 结晶性能 

分 类 号：TQ3[化学工程]