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Cure Kinetics of Carbon Fiber / Bismaleimide Prepreg
Guo Zhansheng*,Du Shanyi,Zhang Boming,Zhang Baoyan,Chen Xiangbao
Author NameAffiliationE-mail
Guo Zhansheng* Center for Composite MaterialsHarbin Institute of TechnologyHarbin 150001 guowinboy@163.comorzsguo@hit.edu.cn 
Du Shanyi Center for Composite MaterialsHarbin Institute of TechnologyHarbin 150001  
Zhang Boming Center for Composite MaterialsHarbin Institute of TechnologyHarbin 150001  
Zhang Baoyan Beijing Institute of Aeronautical MaterialsBeijing 100095  
Chen Xiangbao Beijing Institute of Aeronautical MaterialsBeijing 100095  
Abstract:
A new isothermally based cure kinetic model for the prepreg was presented using an industrially supplied prepreg rather than neat resin. The matrix resin was bismaleimide(BMI)resin,and the reinforcement was carbon fiber T700-12S. A series of isothermal Differential Scanning Calorimetry(DSC)tests were performed and analyzed by the proposed nth-order reaction model. An increase in the cure rate was observed at the higher temperature in both neat and prepreg. After reaching the peak value,the cure rate of resin dropped off faster in prepreg,resulting in a lower average value of the ultimate heat of reaction. The presence of carbon fiber was found to significantly impact the curing behavior of the resin,leading to significant changes from the neat resin kinetic parameters. The carbon fibers imposed restrictions on the molecular mobility of reactive species,reduced the extent of polymerization within the system and did not change the cure mechanism of resin.
Key words:  Cure kinetics,Neat BMI,Prepreg,DSC
FundProject:
碳纤维/双马树脂预浸料体系的固化动力学
郭战胜*,杜善义,张博明,张宝艳,陈祥宝
摘要:
给出了以等温固化航空航天工业用预浸料和纯树脂的固化动力学模型的研究. 树脂基体是改性的BMI树脂,增强相是碳纤维(T700-12S). 用n 级反应模型分析了一系列差示扫描量热法(DSC)的试验数据. 无论是纯树脂或是预浸料,固化温度越高,固化速率就越大. 达到峰值以后,固化速率降低比较快,导致预浸料体系的总反应热低. 纤维的存在明显影响树脂的固化反应,预浸料体系固化动力学参数和纯树脂的参数有显著差异. 增强纤维约束了树脂基体固化过程中的分子运动能力,降低了体系的固化程度,但没有改变树脂的固化机理.
关键词:  固化动力学  纯双马树脂  预浸料  DSC
DOI:10.1088/1674-0068/17/2/219-224
分类号: