摘要
用DSC方法研究了LDPE/EPO共混体系的等温及非等温结晶动力学,对LDPE/EPO共混体系的等温结晶动力学研究表明,共混物是三维生长的异相成核,共混物在各个结晶温度下的结晶过程都是以方式K_g(Ⅱ)进行的.采用联系Avrami方程和Ozawa方程导出的新非等温结晶动力学方程,处理了LDPE/EPO共混体系,得到了非等温结晶过程的一些基本参数,新方程很好地描述了此共混体系的非等温结晶动力学过程.
The isothermal crystallization kinetics of LDPE/EPO blends have been investigated by DSC. It indicated that blends are of three-dimensional growth a thermal nucleation. The nucleation process in every crystallization temperature belong to regime II. A new kinetic equation of non-isothermal crystallization was derived by combining Avrami and Ozawa equations. Some parameters of crystallization kinetics can be obtained from the new kinetic equation. The kinetics of non-isothermal crystallization of a LDPE/EPO blends has been investigated by using differential scanning calorimeter. The experimental results analyzed showed agreements with the new kinetic equation.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1992年第2期162-168,共7页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
LDPE/EPO
共混物
结晶行为
LDPE/EPO blends, DSC, Crystallization kinetics under isothermal and non-isothermal conditions
