TLCPa／PA 66的非等温结晶动力学  

Non-isothermal crystallization kinetics of TLCPa/PA 66 blends

作　　者：张卓[1] 张文熊[1] 郭鸿俊[1] 何伟[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100022

出　　处：《合成树脂及塑料》2006年第5期23-25,共3页China Synthetic Resin and Plastics

基　　金：北京市自然科学基金资助项目(D2002003)。

摘　　要：研究了新型热致液晶聚酰胺(TLCPa)与聚酰胺(PA)66熔融共混物的非等温结晶行为。w(TLCPa)为0～30％的共混物的结晶温度和结晶度分别从PA 66的235．83℃和39．8％逐步下降为224．70℃和30．8％．PA 66的结晶明显受到抑制。w(TLCPa)为10％的共混物的Ozawa指数从PA 66的3～4降为2左右,共混物有着不同于纯PA 66的成核和晶体生长机理。TLCPa与PA 66具有较好的相容性。This paper studied the non-isothermal crystallization kinetics of the melt blend consisting of novel thermotropic liquid crystal copolyamide （TLCPa） and polyamide （PA） 66. The crystallization temperature and crystallinity of the blend gradually reduced to 224.70 ℃ and 30.8% separately from 235.83 ℃ and 39.8% of PA 66, verifying the manifest restriction phenomenon occurred in crystallization process of PA 66. The Ozawa exponent of the blend with 10% TLCPa in mass fraction lowered to 2 from the corresponding value of 3-4 of PA 66. The blend experienced a mechanism of nucleation and crystal growth different from that of pure PA 66. There existed perfect compatibility between TLCPa and PA 66.

关 键 词：热致液晶聚酰胺 聚酰胺66 非等温结晶动力学 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]