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Effects of storage aging on the cure kinetics of T700/BMI prepregs

  • Zhan Sheng Guo*
  • , Shan Yi Du
  • , Boming Zhang
  • *此作品的通讯作者
  • Shanghai University
  • Harbin Institute of Technology

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The effects of room temperature aging on the cure kinetics of a bismaleimide (BMI) matrix prepreg have been characterized by different time and storage conditions. The study has focused on the stability of BMI matrix carbon fiber prepregs, when exposed to controlled environmental conditions before being used in composite manufacturing. The effects of aging on reactivity, glass transition temperature, and process window have been investigated by differential scanning calorimetrer (DSC) through dynamic and isothermal tests. A theoretical kinetic model for epoxy matrix prepregs, developed in previous studies, has been applied to the cure of both aged and imaged BMI matrix. The model is able to satisfactorily describe the effect of processing variables such as temperature and degree of cure during the curing of the composite under different conditions (curing temperature and heating rate). The effects of diffusion-controlled phenomena on the cure kinetics, associated with changes in glass transition temperature as a function of the degree of cure, have been taken into account in the formulation of an nth-order kinetic model.

源语言英语
主期刊名38th SAMPE Fall Technical Conference
主期刊副标题Global Advances in Materials and Process Engineering
出版状态已出版 - 2006
已对外发布
活动38th SAMPE Fall Technical Conference: Global Advances in Materials and Process Engineering - Dallas, TX, 美国
期限: 6 11月 20069 11月 2006

出版系列

姓名International SAMPE Technical Conference

会议

会议38th SAMPE Fall Technical Conference: Global Advances in Materials and Process Engineering
国家/地区美国
Dallas, TX
时期6/11/069/11/06

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