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聚苯醚型超支化环氧/E-51的非模型固化动力学

Model-free curing kinetics of epoxidized hyperbranched poly(phenylene oxide)/E-51 hybrid

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【作者】 吕健勇孟焱何立凡邱藤李效玉王海侨

【Author】 LU JianYong MENG Yan HE LiFan QIU Teng LI XiaoYu WANG HaiQiao(Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

【机构】 北京化工大学材料科学与工程学院碳纤维及功能高分子教育部重点实验室

【摘要】 分别采用Friedman(FR)法、Flynn-Wall-Ozawa(FWO)法、Kissinger-Akahira-Sunose(KAS)法,以及Vyazovkin(VA)高级非模型法,对聚苯醚型超支化环氧(EHPPO)/双酚A缩水甘油醚型环氧(E-51)体系的固化反应活化能和指前因子进行了计算,并对计算结果进行了比较分析和研究。结果表明,FWO法和KAS法的计算结果与VA法的计算结果比较接近,能够较为准确地反应固化行为,而FR法的结果偏差较大;在E-51环氧中添加聚苯醚型超支化环氧后,固化体系放热峰的峰值温度和反应活化能都有所下降,表明添加聚苯醚型超支化环氧后可使固化反应更容易进行。

【Abstract】 The non-isothermal curing process of an epoxidized hyperbranched poly(phenylene oxide)/diglycidyl ether of bisphenol A(EHPPO/DGEBA) hybrid has been studied.The reaction activation energy and pre-exponential factor were calculated by the Friedman(FR),Flynn-Wall-Ozawa(FWO),and Kissinger-Akahira-Sunose(KAS) methods and the advanced model-free kinetics method of Vyazovkin(VA).The activation energies calculated using the FWO and KAS methods agreed with that given by the VA method.In contrast,the activation energy obtained using the FR method differed from that given by the VA method.Furthermore,addition of EHPPO to DGEBA decreases the peak temperature of the curing process and the activation energy,which indicates that the addition of EHPPO makes the curing process easier to accomplish.

【关键词】 超支化环氧杂化固化动力学活化能
【Key words】 hyperbranchedepoxyhybridcuring kineticsactivation energy
【基金】 北京市自然科学基金(2092023);国家自然科学基金(51173012)
  • 【文献出处】 北京化工大学学报(自然科学版) ,Journal of Beijing University of Chemical Technology(Natural Science Edition) , 编辑部邮箱 ,2013年03期
  • 【分类号】TQ323.5
  • 【下载频次】104
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