酚醛型氰酸酯树脂的固化反应动力学  

Curing Kinetics of Novolac Cyanate Ester Resin

作　　者：尹昌平[1] 李建伟[1] 肖加余[1] 曾竟成[1] 江大志[1] 边立平[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《高分子材料科学与工程》2010年第7期51-54,共4页Polymer Materials Science & Engineering

摘　　要：采用非等温差示扫描量热(DSC)方法对酚醛型氰酸酯树脂的固化反应动力学进行了研究。分别通过Ozawa-Flynn-Wall法和Kissiger-Akahira-Sunose法求取了活化能,通过Malek法确定了固化反应机理函数,求解了固化反应动力学参数,得到了固化反应动力学方程为dα/dt=865597exp(-78725/RT)α0.001(1-α)2.289。结果表明,采用Malek法判别固化反应机理符合两参数自催化模型,实验得到的DSC曲线与模型计算所得到的曲线吻合得较好,所确定的模型在3K/min～15K/min的升温速率下能较好地描述酚醛型氰酸酯树脂的固化反应过程,为工艺参数的选择和工艺窗口的优化提供了理论依据。The curing kinetics of novolac cyanate ester resin was studied by differential scanning calorimetry（DSC） technique at different heating rates. Based on DSC curves, the activation energy was calculated through the Ozawa-Flynn-Wall and Kissiger-Akahira-Sunoseer methods, the curing mechanism function was determined and the kinetic parameters were evaluated by Malek method, then the kinetic model of curing reaction was built as dα/dt=865597exp（-78725/RT）α^0.001（1-α）^2.289. The results show that the two-parameter autocatalytic model is adequate to represent the curing reaction process, the model can well describe the curing reaction process of the studied resin. The DSC curves obtained using the experimental data show a good agreement with that theoretically calculated under 3 K/min～15 K/min heating rate. The research results will provide theoretical basis for the choice of manufacturing process and the optimization of processing window.

关 键 词：酚醛型氰酸酯树脂 动态DSC 固化动力学 Malek法 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]