摘要
通过快速特性粘度法研究聚碳酸酯(PC)在恒温条件下降解不同时间的粘均分子量,进而研究其降解机理和动力学方程.认为PC的整个降解过程可分为吸收氧气、酯交换和自由基反应3个阶段.对第1阶段———吸氧阶段和第2阶段———酯交换阶段的降解机理和动力学方程进行了详细的研究.
The relation of the average viscose molecular mass of polycarbonate(PC) with temperature and time was obtained in the process of PC thermal degradation. Thermal degradation mechanism and kinetic equation of PC were studied. Three stages of oxygen absorption, ester exchange, and free radical reaction through PC thermal degradation process are proposed. Thermal degradation kinetics of oxygen absorption and ester exchange stages were studied in detail.
出处
《建筑材料学报》
EI
CAS
CSCD
2004年第3期360-364,共5页
Journal of Building Materials
