己内酰胺阴离子聚合产物的纺丝性能  

Study on Spinning Property of PA6 by Anionic Polymerization

作　　者：唐宁[1] 李小宁[2] 于鹏[1] 

机构地区：[1]北京服装学院材料工程学院,北京100029 [2]北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《北京服装学院学报（自然科学版）》2004年第2期10-14,35,共6页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

摘　　要：采用脂肪族异氰酸酯为助催化剂进行己内酰胺阴离子淤浆聚合,探索减轻副反应的聚合条件.选用酸性试剂有效钝化了聚合物中的残留活性中心,通过纺丝观察了其可纺性,并测定了产物的相对粘度.实验中发现当助催化剂的加入量较小、聚合温度较低、聚合时间较短时,聚合产物有较好的可纺性.在聚合产物中加入一定量的酸酐和抗氧剂可以使其可纺性得到显著改善.Suspension anionic polymerization of caprolactam was carried out in aliphatic hydrocar- bon media, with NaOH as catalyst and aliphatic isocyanate as activator. Using less amount of iso- cyanate and lower reaction temperature could reduce molecular branching and interlinking of the polymer that often exist in anionic polymerization. Catalyst residue in the polymer was removed by the treatment with acid anhydride and the thermal stability of the polymer was improved by addition of irganox 168/1010. Spinnability of the polymer can be improved greatly.

关 键 词：己内酰胺 阴离子聚合 尼龙6 可纺性 

分 类 号：TQ340.14[化学工程—化纤工业]