| 聚-α-甲基苯乙烯热降解动力学研究 |
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| 引用本文： | 叶丽娜,陈素芬,黄勇,李波,张占文,杨军校.聚-α-甲基苯乙烯热降解动力学研究[J].强激光与粒子束,2012,24(10):2400-2404. |
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| 作者姓名： | 叶丽娜 陈素芬 黄勇 李波 张占文 杨军校 |
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| 作者单位： | 1.西南科技大学 材料科学与工程学院, 四川 绵阳 621 01 0; |
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| 基金项目： | 国家高技术发展计划项目 |
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| 摘 要： | 利用热分析技术(TG/DTG)对聚--甲基苯乙烯(PAMS)在氮气气氛下以不同升温速率为条件进行热降解动力学研究。研究结果表明:PAMS的热降解步骤为一步反应，在升温速率为10 ℃/min时，主要失重温度区间为302～343 ℃，热失重速率最大时温度为325 ℃。在同一温度下，随着升温速率的不断提高，主要降解温度向高温区移动。采用了Kissinger，Flynn-Wall-Ozawa及Coats-Redfern方法研究其动力学参数，确定了PAMS的降解活化能在160～220 kJ/mol之间、反应级数为一级。
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| 关 键 词： | 惯性约束聚变 降解芯轴技术 聚-α-甲基苯乙烯 热重分析 动力学 |
| 收稿时间： | 2012/1/4 |
Thermal degradation kinetics of poly-alpha-methylstyrene |
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| Ye Lina
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Chen Sufen
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Huang Yong
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Li Bo
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Zhang Zhanwen
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Yang Junxiao.Thermal degradation kinetics of poly-alpha-methylstyrene[J].High Power Laser and Particle Beams,2012,24(10):2400-2404. |
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| Authors: | Ye Lina Chen Sufen Huang Yong Li Bo Zhang Zhanwen Yang Junxiao |
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| Institution: | 1.School of Material Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;2.Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China |
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| Abstract: | Thermogravimetric analysis was performed to obtain thermal degradation kinetics of poly-alpha-methylstyrene(PAMS) at different heating rates in nitrogen. Several conclusions can be obtained from the experimental. Firstly, the degradation of PAMS is a one step reaction.Secondly, when the heating rate is 10 ℃/min , the main degradation temperature ranges from 302.79 ℃ to 343.10 ℃, and maximum thermal weight loss rate temperature is 325.85 ℃. The main degradation temperature ranges tend to higher temperature with increasing of heating rate. The kinetic parameters of thermal decomposition of PAMS were calculated using Kissinger method, Flynn-Wall-Ozawa method, and Coats-Redfern method. |
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| Keywords: | inertial confinement fusion decomposable mandrel technique poly-alpha-methylstyrene thermal gravity analysis kinetics |
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