Kinetic Study of PVC Pyrolysis in Air by Thermogravimetric Analysis Using the Friedman Method

被引：4

作者：

Han, Bin ^{[1
,2
]}

Wu, Yulong ^{[2
]}

Feng, Wei ^{[1
]}

Chen, Zhen ^{[2
]}

Yang, Mingde ^{[2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

[2] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

来源：

ADVANCE IN ECOLOGICAL ENVIRONMENT FUNCTIONAL MATERIALS AND ION INDUSTRY III | 2012年 / 427卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

PVC; thermo-oxidative decomposition; thermogravimetric analysis; kinetic parameter; THERMAL DEHYDROCHLORINATION; POLY(VINYL CHLORIDE); DECOMPOSITION; PARAMETERS;

D O I：

10.4028/www.scientific.net/AMR.427.64

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The thermal degradation of PVC in air ambience was investigated by the thermogravimetric analysis (TGA). The experiments were carried out at different heating rate of 5, 10, 20 and 40 degrees C/min, respectively. The activation energy was calculated by the Friedman method. The pyrolysis mechanism of PVC in air was discussed and compared with that in Nitrogen atmosphere. The pyrolysis process of PVC in air could be divided into two main stages: 200 degrees C similar to 380 degrees C and 400 degrees C similar to 600 degrees C, which obtained by TGA at the heating rate of 5 degrees C/min. The second stage could be further subdivided into two parts by 465 degrees C. It can be concluded that the oxygen in air affected the second stage more obviously than that of the first one, in comparison with inert atmosphere. The activation energy of the second stage was still larger than the first stage.

引用

页码：64 / +

页数：2

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