| 聚碳酸酯/ABS/蒙脱土纳米复合材料的热重动力学分析 |
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| 引用本文： | 宗若雯,李玉臻,胡源,汪少锋.聚碳酸酯/ABS/蒙脱土纳米复合材料的热重动力学分析[J].火灾科学,2004,13(2):116-122. |
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| 作者姓名： | 宗若雯 李玉臻 胡源 汪少锋 |
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| 作者单位： | 中国科技大学,火灾科学国家重点实验室,安徽,合肥,230026;安徽省合肥市消防支队,安徽,合肥,230030 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： | 利用直接熔融插层技术制备聚碳酸酯/ABS聚合物合金/蒙脱土纳米复合材料.用热重分析法(TGA)研究了聚合物合金和纳米复合材料的热氧化降解行为.分别采用了无模式函数法(model-freemethod)和多元非线性回归法(multivariate
nonlinearregression method)进行动力学评价.由此确定了整个降解过程的表观动力学参数.研究结果表明聚碳酸酯/ABS/蒙脱土纳米复合材料具有较高的热稳定性和阻燃性.两种材料的热氧化降解模型是一个两步分解过程.
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| 关 键 词： | 纳米复合材料 热重动力学分析 无模式函数法 非线性回归法 |
| 收稿时间： | 2004/3/10 0:00:00 |
| 修稿时间： | 2004/3/25 0:00:00 |
Thermogravimetric Kinetic Analysis of PC/ABS/montmorillonite Nanocomposites |
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| ZONG Rui-wen,LI Yu-zhen,HU Yuan and WANG Shao-feng.Thermogravimetric Kinetic Analysis of PC/ABS/montmorillonite Nanocomposites[J].Fire Safety Science,2004,13(2):116-122. |
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| Authors: | ZONG Rui-wen LI Yu-zhen HU Yuan and WANG Shao-feng |
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| Institution: | State Key Laboratory of Fire Science, USTC;Hefei Branch of Anhui Fire Department, Hefei, Anhui 230030, P. R. of China;State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC |
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| Abstract: | Polycarbonate (PC)/acrylonitrile-butadiene-styrene(ABS) polymer alloy/montmorillonite (MMT) nanocomposites have been prepared using direct melt intercalation technique. The thermal oxidative degradation of the polymer alloy and the nanocomposites was studied by thermogravimetric analysis (TG). The kinetic evaluations were performed by the model-free kinetic analysis and the multivariate nonlinear regression. Apparent kinetic parameters for the overall degradation were calculated. The results show that the PC/ABS/MMT nanocomposites have a higher thermal stability and lower flammability. Their thermal oxidative decomposition reaction model was a two-step process. |
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| Keywords: | nanocomposites thermogravimetric kinetic analysis model-free method nonlinear regression method |
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