Cure kinetics of carbon fiber reinforced epoxy resin prepreg
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.
Dynamic DSC Epoxy resin prepreg Variable activation energy Cure kinetic equation
YIN Rui ZHAN Lihua TAN Wei LI Shujian
School of Mechanical and Electrical Engineering,Central South University,Changsha,Hunan,410083,China School of Mechanical and Electrical Engineering,Central South University,Changsha,Hunan,410083,China School of Mechanical and Electrical Engineering,Central South University,Changsha,Hunan,410083,China Light Alloys Research Institute,Central South University,Changsha,Hunan,410083,China
国内会议
长沙
英文
120-126
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）