Phase separation time/temperature dependence of some thermoplastics-modified thermosetting systems
Xiujuan ZHANG 1Xiaosu YI 2Yuanze XU1
作者信息
- 1. The Key Laboratory of Molecular Engineering of Polymers,Ministry of Education,Department of Macromolecular Science,Fudan University,Shanghai 200433,ChinaAbstraet The phase separation processes of various ther-moplastics-modified thermosetting systems
- 2. Institute of Aeronautic Materials,Beijing 100095,China
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Abstract
The phase separation processes of various ther-moplastics-modified thermosetting systems which show upper critical solution temperature (UCST) or lower crit-ical solution temperature (LCST) were studied with emphasis on the temperature dependency of the phase separation times. It was found that the phase separation time-temperature relationship follows the Arrhenius equation. The cure-induced phase separation activation energy Ea(ps) generated from the equation is independent of the method used to measure phase separation time. In our experimental ranges it is found that Ea (ps) is inde-pendent of the thermoplastic (TP) content,TP molecular weight and curing rate but it varies with the cure reaction kinetics and the chemical environments of the systems.
Key words
polymerization induced phase separation/thermosetting/thermoplastic/time and temperature dependence/Arrhenius equation引用本文复制引用
出版年
2008
NETL
NSTL
万方数据