【摘 要】
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To analysis the curing behavior of carbon fiber reinforced epoxy resin prepreg T800/X850, dynamic differential scanning calorimetry (DSC) method was carried out to investigate the cure behaviour of T8
【机 构】
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School of Mechanical and Electrical Engineering,Central South University,Changsha,Hunan,410083,China
【出 处】
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特种粉末冶金及复合材料制备/加工第一届学术会议
论文部分内容阅读
To analysis the curing behavior of carbon fiber reinforced epoxy resin prepreg T800/X850, dynamic differential scanning calorimetry (DSC) method was carried out to investigate the cure behaviour of T800/X850 prepreg.The characteristic temperatures and cure kinetics parameters of the prepreg were systematically investigated based on phenomenological model and the cure reaction kinetic model of the epoxy resin was determined to be the autocatalytic model.The relation of activation energy versus degree of cure was obtained by iso-conversional method for the epoxy resin in prepreg.The results showed that the reaction activation energy of epoxy resin in the prepreg changed significantly with increasing degree of cure during the whole curing process, thus the curing model based on the assumption that the activation energy was a constant during the whole curing process could not describe this curing reaction accurately.Therefore, an activation energy variable autocatalytic kinetic model and particle swarm global optimization algorithm were used to obtain the cure kinetic equation of T8OO/X850 epoxy resin prepreg.The results showed that this model achieved a good correlation with the experiment data, hence providing a theoretical base for further study on thermodynamic properties and enable the quality control during the curing process for the prepreg.
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