摘要
对由二苯甲烷双马来酰亚胺与二烯丙基双酚A体系制得的典型双马来酰亚胺树脂体系的固化动力学模型进行研究,目前国内绝大多数双马来酰亚胺树脂体系都是在此基础上改性得到的。并采用DSC方法研究典型双马来酰亚胺树脂的固化过程,用恒温和动态两种方法分析其固化反应。根据自催化与n级反应方程,采用least-squares方法和Kissinger方法进行数据处理,建立该树脂体系的固化动力学模型并确定其固化动力学参数,此模型与实验结果具有良好的吻合性。同时该模型揭示了典型双马来酰亚胺树脂体系的固化反应是按不同机理分段进行的,在反应过程中由自催化模型转变为n级反应模型。此模型为合理的研究双马来酰亚胺树脂体系的工艺参数,保证产品质量以及工艺优化提供了必要的前提条件。
The curing kinetic model of typical BMI resin was studied, and the typical BMI resin was obtained by copolymerization of bis (4-maleimido-phenyl) methat and o, o-diallyl-bisphenol-A. At present, a number of modified BMI resins are prepared based on the typical BMI resin. The kinetics of the cure reaction of typical BMI was monitored by differential scanning calorimetry (DSC) and analyzed by constant heating and isothermal methods. The cure kinetic model and kinetic parameters based on the autocatalytic and nth reaction equation were established and applied to the processing of data by least-squares and Kissinger methods. The estimated cure of the model was in good agreement with that of the experiments. The results indicated that the curing reaction processing can be divided into two stages following different mechanics, with the autocatalytic reaction model transformation into the nth reaction model. The model is important for processing simulation and quality control of processing for high performance composites.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2004年第1期78-83,共6页
Acta Materiae Compositae Sinica
