摘要
用膨胀计法研究了负载型钛催化合成反－１，４－聚异戊二烯（ＴＰＩ）的结晶行为，其本体结晶动力学实验数据符合Ａｖｒａｍｉ方程。结晶速率常数ｋ在２０～４５℃时，随温度升高而减小；Ａｖｒａｍｉ指数ｎ在２０～３０℃时，接近１，在４５℃时，接近２。同时还考察了交联对ＴＰＩ结晶速度和结晶度的影响，并用ＤＳＣ观察了交联ＴＰＩ熔融吸热峰的变化。
The crystallization behavior of the synthetic trans-1,4-polyisoprene with supported titanium catalyst was studied by dilatometric method.The experimental data of bulk crystallization kinetics fit with the Avrami equation,and the constant k of the growth rates and the Avrami exponent n were obtained. The influence of crosslinking on the crystallization rates and crystallinity of trans 1,4-polyisoprene was examined,the changes of melting peaks were observed.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1996年第5期287-289,共3页
China Synthetic Rubber Industry
基金
国家自然科学基金
关键词
聚异戊二烯
结晶
动力学
橡胶
trans-1,4-polyisoprene
crystallization kinetics
crystallinity
crosslinked polymer
