BMI/邻苯二甲腈功能化氧化石墨体系的固化行为

摘要

以邻苯二甲腈功能化的氧化石墨（CMG）与双马来酰亚胺（BMI）为原料通过熔融共混的方法制备BMI/CMG体系。采用傅里叶变换红外光谱、X-射线光电子能谱对BMI/CMG体系进行结构分析，热重分析其热性能，并通过非等温差示扫描量热法研究其固化行为。利用Kissinger和Crane方程得到了固化反应的表观活化能和反应级数等动力学参数。结果表明：BMI中加入CMG后，BMI/CMG体系的表观活化能明显提高，反应更接近于一级反应。%Bismaleimide (BMI)/phthalonitrile functionalized graphite (CMG)systems were prepared by melt blending method from CMG and BMI. The structure of BMI/CMG systems was analyzed by Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS),the thermal properties of the composites were tested by thermogravimetry(TG) and the curing behavior of the composites was studied by non-isothermal differential scanning calorimetry(DSC). The curing reaction kinetic parameters, such as apparent activation energy and reaction order were calculated by Kissinger and Crane equations. The results indicate that the apparent activation energy of CMG/BMI systems is increased remarkably and the reaction order is closer to the first-order reaction with the addition of CMG in BMI.