The pyrolysis mechanism of phenol formaldehyde resin

被引:205
作者
Jiang, Haiyun [1 ]
Wang, Jigang [2 ]
Wu, Shenqing [2 ]
Yuan, Zhiqing [1 ]
Hu, Zhongliang [3 ]
Wu, Ruomei [1 ]
Liu, Qilong [1 ]
机构
[1] Hunan Univ Technol, Sch Packaging & Mat Engn, Zhuzhou 412007, Peoples R China
[2] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
[3] Hunan Univ Technol, Sch Met Engn, Zhuzhou 412007, Peoples R China
基金
中国国家自然科学基金;
关键词
Phenol formaldehyde; Pyrolysis mechanism; Fourier transform infrared spectroscopy; Pyrolysis gas chromatography mass spectrometry; CARBONS;
D O I
10.1016/j.polymdegradstab.2012.04.016
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Fourier transform infrared spectroscopy was used to characterize the structure of phenol formaldehyde (PF) resin pyrolyzed at different temperatures, and pyrolysis gas chromatography mass spectrometry was used to observe the volatiles. A pyrolysis mechanism has been consequently deduced, and several previous ambiguities have been clarified. The occurrence of carbon monoxide and carbon dioxide is attributed to the oxidization of methylene. However, not oxidization, but methylene scission is mainly responsible for the decomposition of PF resin. At the same time, methylene radicals combine with other small molecules and form some volatiles such as ethylene and methanol. With the elevation of heat treatment temperature, PF resin is progressively transformed into amorphous carbon by pyrolysis and polycyclic reactions. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1527 / 1533
页数:7
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