增粘对PET结晶动力学的影响  

THE INFLUENCE OF POLYCONDENSATION ON PET CRYSTALLIZATION KINETICS

作　　者：蔡红军 宋青[1,2] 孙琳[1,2] 原玲[1,2] 吴立衡[1,2] 

机构地区：[1]中国科技大学 [2]中国纺织科学研究院

出　　处：《合成纤维工业》1999年第3期1-4,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金;国家科委攀登预选项目

摘　　要：利用差示扫描量热分析仪分析研究了增粘前后ＰＥＴ的结晶动力学。结果表明，ＰＥＴ增粘前后平衡熔点基本不变，半结晶时间增大，结晶速度常数减少。The crystallization kinetics of PET before and after further polycondensation were studied by DSC. The results showed that there was no difference on the equilibrium melting point for the two PET with different molecular weight. Meanwhile, the crystallization rate decreased after further polycondensation, the half time of isothermal crysatllization increased with the increase of molecular weight. By comparing the diffusion and the average interface free energy, the crystallization characteristics of PET before and after further polycondensation were discussed.

关 键 词：动力学 结晶 固相聚合 增粘 PET 聚酯纤维 

分 类 号：TQ342.201[化学工程—化纤工业]