Liquid fragility of the unsaturated polyester resin

被引:1
|
作者
Zhao XiaoLin [1 ]
Bian XiuFang [1 ]
Yang ChunCheng [1 ]
Wang XinZhu [1 ]
机构
[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R China
基金
中国国家自然科学基金;
关键词
unsaturated polyester resin (UPR); viscosity; liquid fragility; GLASS-FORMING ABILITY; KINETIC-ANALYSIS; SUPERHEATED MELTS; VISCOSITY; POLYMERIZATION; TEMPERATURE; PR;
D O I
10.1007/s11426-013-4853-5
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Curing behaviors of the unsaturated polyester resin (UPR) containing 1-1.8 wt% methyl ethyl ketone peroxide (MEKP) initiator are investigated. The viscosity, gelation and vitrification transition of the UPR-MEKP systems are examined using the rotating viscometer and differential scanning calorimetry (DSC). A liquid fragility parameter, M (c), defined as the viscosity variation rate of the liquids towards the curing temperature is presented. It is found that M (c) has a good negative relation with the glass transition temperature (T (g)) in the systems. M (c) can be used for predicting the stability of the cured amorphous systems. The relationship between the liquid and cured thermoset polymer systems is studied from both the thermodynamic and kinetic point of view.
引用
收藏
页码:724 / 728
页数:5
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