聚己内酰胺铸膜液的制备及性能  

Preparation and Properties of the Polycaprolactam Casting Solution

作　　者：姜兆辉[1] 李志迎[1] 贾曌[1] 王婧[1] 肖长发[2] 

机构地区：[1]山东理工大学鲁泰纺织服装学院,山东淄博255049 [2]天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地,天津300387

出　　处：《塑料工业》2015年第1期23-26,共4页China Plastics Industry

基　　金：山东省高等学校科技计划项目(J14LA56);山东理工大学博士科研启动项目(4041-413047);山东省自然科学基金(ZR2014EMP004)

摘　　要：为了避免常规聚酰胺铸膜液的酸性腐蚀,基于热致相分离法(TIPS),优选出N-乙基邻对甲苯磺酰胺(N-E-O/PTSA)作为聚酰胺铸膜液的稀释剂。热失重分析表明,铸膜液具有较好的热稳定性,分解温度远高于制膜温度200℃。此外,差示扫描量热法显示,稀释剂降低了聚酰胺6(PA6)的熔融温度,符合Flory聚合物-稀释剂体系熔点降低方程。为构筑TIPS法制膜的多重微孔结构,铸膜液中添加了微米Si O2,从而提高了PA6/N-E-O/PTSA体系的结晶温度,而对熔融温度的影响较小。In order to avoid acid corrosion of conventional casting solution of polyamide 6, N-E-O/PTSA was optimized as diluent for PA membrane preparation based on thermally induced phase separation method （TIPS）. TG results showed that the casting solution had good thermal stability and its decomposition temperature was much higher than the membrane fabrication temperature （200 ℃ ）. In addition, DSC illustrated that the diluent reduced the melting temperature of polyamide 6, which was consistent with Flory function of polymer/diluent system. To build multiple mieroporous structure by TIPS method, micro-SiO2 was added into the casting solution, which enhanced the crystallization temperature of PA6/N-E-O/PTSA system and had little effect on melting temperature.

关 键 词：聚己内酰胺 稀释剂 铸膜液 热致相分离 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]