| 用快速特性粘度法研究聚碳酸酯的热降解机理 |
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| 引用本文： | 浦鸿汀,张先禹,张庆伟. 用快速特性粘度法研究聚碳酸酯的热降解机理[J]. 建筑材料学报, 2004, 7(3): 360-364 |
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| 作者姓名： | 浦鸿汀 张先禹 张庆伟 |
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| 作者单位： | 同济大学,材料科学与工程学院,上海,200092 |
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| 摘 要： | 通过快速特性粘度法研究聚碳酸酯(PC)在恒温条件下降解不同时间的粘均分子量，进而研究其降解机理和动力学方程．认为PC的整个降解过程可分为吸收氧气、酯交换和自由基反应3个阶段．对第1阶段——吸氧阶段和第2阶段——酯交换阶段的降解机理和动力学方程进行了详细的研究．
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| 关 键 词： | 聚碳酸酯 特性粘度 热降解 研究 酯交换 降解机理 分子量 动力学方程 自由基反应 氧气 |
| 文章编号： | 1007-9629(2004)03-0360-05 |
| 修稿时间： | 2003-08-04 |
Studies on Thermal Degradation Mechanism of Polycarbonate by Rapid Intrinsic Viscosity Method |
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| PU Hong-ting,ZHANG Xian-yuZHANG Qing-wei. Studies on Thermal Degradation Mechanism of Polycarbonate by Rapid Intrinsic Viscosity Method[J]. Journal of Building Materials, 2004, 7(3): 360-364 |
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| Authors: | PU Hong-ting ZHANG Xian-yuZHANG Qing-wei |
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| Abstract: | The relation of the average viscose molecular mass of polycarbonate(PC) with temperature and time was obtained in the process of PC thermal degradation. Thermal degradation mechanism and kinetic equation of PC were studied. Three stages of oxygen absorption, ester exchange, and free radical reaction through PC thermal degradation process are proposed. Thermal degradation kinetics of oxygen absorption and ester exchange stages were studied in detail. |
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| Keywords: | polycarbonate thermal degradation empirical intrinsic viscosity equation average viscose molecular mass |
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