STUDY OF CURE KINETIC MODEL OF TYPICAL BISMELEIMIDE

The cure kinetic model of typical BMI resin was studied, and the typical BMI resin has been obtained by copolymerization of bis (4-maleimido-phenyl)methat and o,o-diallylbisphenol-A. At present, a majority of the modified BMI resin is prepared based on the typical BMI resin. The kinetics of the cure reaction for a system of typical BMI was monitored by differential scanning calorimetry(DSC) and carried out by constant heating and isothermal methods. The cure kinetic model and kinetic parameters based on the autocatalytic and nth reaction equation were established and were 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.