摘要
利用双螺杆挤出机制备了纤维用聚苯硫醚/多壁碳纳米管(PPS/MWCNTs)复合材料。通过差示扫描量热法(DSC)研究了不同降温速率下纯PPS以及PPS/MWCNTs复合材料的非等温结晶过程,并运用Ozawa模型进行了非等温结晶动力学分析。结果表明:降温速率对PPS/MWCNTs复合材料的结晶性能有很大的影响,当降温速率为20℃/min时,PPS/MWCNTs复合材料的结晶能力及相对结晶度最大;MWCNTs在PPS结晶过程中起异相成核剂的作用,使PPS/MWCNTs复合材料的结晶温度较纯PPS升高。
The polyphenylene sulfide/multi-walled carbon nanotubes(PPS/MWCNTs) composite was prepared by twin-screw extruder.The non-isothermal crystallization progress of pure PPS and PPS/MWCNTs composite at different cooling rates was characterized by differential scanning calorimeter(DSC).Moreover,the non-isothermal crystallization kinetics of composites were analyzed with the aid of the Ozawa Model.The results indicated that the speed of cooling rate affected greatly on the crystallization property of the composites.The crystallinity of the composite was at its maximum when the cooling rate was 20 ℃/min.MWCNTs played the role of heterogeneous nucleating agent in the crystallizing process of PPS,while raised the initial crystallization temperature and crystallinity of the composites.When the content of MWCNTs was 3 %,the crystallinity reached its highest value of about 52.10 %.
出处
《合成纤维》
CAS
2012年第2期11-16,共6页
Synthetic Fiber in China
关键词
聚苯硫醚
多壁碳纳米管
复合材料
非等温结晶
polyphenylene sulfide,multi-walled carbon nanotubes,composite,non-isothermal crystallization
