| 聚萘二甲酸乙二酯的热降解动力学——Ⅰ非等温热降解动力学 |
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| 引用本文： | 张莉,隋坤艳,杨明,马敬红,梁伯润.聚萘二甲酸乙二酯的热降解动力学——Ⅰ非等温热降解动力学[J].高分子材料科学与工程,2009(2):109-111,115. |
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| 作者姓名： | 张莉 隋坤艳 杨明 马敬红 梁伯润 |
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| 作者单位： | 东华大学分析测试中心;青岛大学纤维新材料与现代纺织国家重点实验室培育基地;化学纤维改性及聚合物材料国家重点实验室东华大学; |
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| 摘 要： | 在氮气氛中采用热重分析的方法对聚萘二甲酸乙二酯(PEN)的热降解动力学进行了研究。采用Friedman和Chang两种单一加热速率方法对活化能Ea、反应级数n和频率因子Z等降解反应动力学参数进行了分析。讨论了降解机理以及加热速率和计算方法对降解温度和降解动力学参数的影响。由单一加热速率法得到的Td、Tdm和(dα/dt)m,以及Ea和ln(Z)值均随加热速率的增加而增加,n值则随加热速率略有变化。随加热速率的提高,聚合物的降解由分解控制转变为扩散控制过程。
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| 关 键 词： | 聚萘二甲酸乙二酯 热降解 热重分析 动力学 热稳定性 |
Thermal Degradation Kinetics of PEN by Single Heating Rate Methods |
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| ZHANG Li,SUI Kun-yan,YANG Ming,MA Jing-hong,LIANG Bo-run.Thermal Degradation Kinetics of PEN by Single Heating Rate Methods[J].Polymer Materials Science & Engineering,2009(2):109-111,115. |
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| Authors: | ZHANG Li SUI Kun-yan YANG Ming MA Jing-hong LIANG Bo-run |
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| Affiliation: | 1.Research Center for Analysis & Measurement;Donghua University;Shanghai 200051;China;2.State Key Laboratory Cultivating Base of Advanced Fibers and Textiles;Qingdao University;Qingdao 266071;3.State Key Laboratory of Modification of Chemical Fiber & Polymer Material;China |
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| Abstract: | The thermal degradation kinetics of poly(ethylene 2,6-naphthalate)(PEN) in nitrogen was studied by dynamic thermogravimetry(TG).The kinetic parameters,including the activation energy Ea,the reaction order n,and the frequency factor ln(Z) of the degradation reaction for PEN were analyzed by the single heating rate methods of Friedman and Chang.The effects of the heating rate and the calculating method on the degradation mechanics and degradation kinetic parameters were systematically discussed.The value of E... |
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| Keywords: | poly(ethylene 2 6-naphthalate) thermal degradation thermogravimetry kinetics thermostability |
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