聚苯硫醚的等温结晶动力学  

Isothermal crystallization kinetics of polyphenylene sulfide

作　　者：吴思蝶[1] 兰建武[1] 王新雷[1] 

机构地区：[1]四川大学轻纺与食品学院,四川成都610065

出　　处：《合成纤维工业》2011年第3期14-16,共3页China Synthetic Fiber Industry

基　　金：四川省科技支撑项目(2010GZ0076)

摘　　要：采用光学解偏振法结晶速率仪研究了聚苯硫醚(PPS)的等温结晶动力学。结果表明:PPS的结晶速率随结晶温度的升高,先增大后减小,并在160℃左右达到最大结晶速率,约为0.4717s^(-1)。PPS的Avrami指数为2.20～2.93,表明PPS是以异相成核或非热成核的方式三维生长形成球状结晶。在偏光显微镜放大400倍的情况下,160℃时可以看到晶粒较大且排列整齐。The isothermal crystallization kinetics of polyphenylene sulfide （ PPS ） was studied with an optical depolarization crystallization rate meter. The results showed that the crystallization rate of PPS was increased firstly and then decreased with the increase of crystallization temperature and was maximized as 0.471 7 s^ -1 or so at around 160 ℃. The Avrami index value of PPS was 2.20 - 2.93, indicating that PPS has spherical crystal tridimensional growth with heterogeneous nucleation or non-thermal nucleation. The crystal was relatively high in size and had a regular arrangement at 160 ℃, observed with a polarized optical mi- croscope at a magnification of 400.

关 键 词：聚苯硫醚 等温结晶动力学 光学解偏振法 Avrami方程 偏光显微镜 

分 类 号：TQ326.56[化学工程—合成树脂塑料工业]