| 聚三氟氯乙烯的热裂解动力学和机理的研究 |
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| 引用本文： | 陈镜泓,葛文正. 聚三氟氯乙烯的热裂解动力学和机理的研究[J]. 高分子学报, 1985, 0(4): 286-292 |
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| 作者姓名： | 陈镜泓 葛文正 |
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| 作者单位： | 中国科学院上海有机化学研究所，中国科学院上海有机化学研究所 中国科学院广州化学研究所 |
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| 摘 要： | 本文报道在4.1型示差精密热天平上装配了微分单元,组成热重-微商热重(TG-DTG)联用装置用于研究聚三氟氯乙烯在空气中的热裂解动力学过程,并运用几种不同的动力学处理方法所求得的结果来评价各种动力学理论的优缺点和说明聚三氟氯乙烯反应程度在5—95％的整个过程中活化能的变化情况。同时根据裂解程度与能量、裂解速率的关系以及裂解产物结构的鉴定,提出了聚合物无规热裂解机理,解释了迄今文献上所报道的裂解产物的结构。结果还证明了Errede提出的键离解能经验公式不适用于聚三氟氯乙烯的裂解机理。
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| 收稿时间： | 1983-06-04 |
THE KINETICS AND MECHANISM OF PYROLYSIS OF POLYCHLOROTRIFLUOROETHYLENE |
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| CHEN Jing-hong,GE Wen-zheng. THE KINETICS AND MECHANISM OF PYROLYSIS OF POLYCHLOROTRIFLUOROETHYLENE[J]. Acta Polymerica Sinica, 1985, 0(4): 286-292 |
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| Authors: | CHEN Jing-hong GE Wen-zheng |
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| Affiliation: | Shanghai Institute of Organic Chemistry; Academia Sinica; Shanghai |
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| Abstract: | The pyrolytic process of polyehlorotrifluoroethylene (PCTFE) in air was studied by using TG-DTG methos. The kinetic parameters were obtained by using the various kinetic approaches and the results were applied in order to evaluate the various kinetic theories and explain the variation of the activation energy during the pyrolytie process in the extent of 5-95% pyrolytie degree. The random pyrolytic mechanism was proposed according to the relations between the pyrolytie extent and rate of pyrolysis. We seccessfully explained the structures of pyrolytic products of PCTFE which ap-peared in recent literatures,and we also verified the experienced equation of bond dissociation energy proposed by Errede is inappropriate to PCTFE at least. |
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