The pyrolysis mechanism of phenol formaldehyde resin
The pyrolysis mechanism of phenol formaldehyde resin
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DOI：
10.1016/j.polymdegradstab.2012.04.016
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发表时间：
2012-08-01
影响因子：
5.9
通讯作者：
Liu, Qilong
中科院分区：
文献类型：
--
作者：
Jiang, Haiyun;Wang, Jigang;Liu, Qilong
采用傅里叶变换红外光谱法对不同温度下酚醛树脂的结构进行表征，采用裂解气相色谱质谱法对挥发物进行分析。因此，推导出了热解机理，澄清了以前的几个模糊之处。一氧化碳和二氧化碳的出现归因于亚甲基的氧化。而酚醛树脂的分解主要是由于亚甲基断裂而不是氧化。同时，亚甲基自由基与其他小分子联合收割机结合，形成一些挥发物，如乙烯和甲醇。随着热处理温度的升高，酚醛树脂通过热解和多环反应逐步转化为无定形碳。皇冠版权所有（C）2012由爱思唯尔有限公司出版。保留所有权利。
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.