کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5202664 | 1381906 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The pyrolysis mechanism of phenol formaldehyde resin
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The pyrolysis mechanism of phenol formaldehyde resin The pyrolysis mechanism of phenol formaldehyde resin](/preview/png/5202664.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 97, Issue 8, August 2012, Pages 1527-1533
Journal: Polymer Degradation and Stability - Volume 97, Issue 8, August 2012, Pages 1527-1533
نویسندگان
Haiyun Jiang, Jigang Wang, Shenqing Wu, Zhiqing Yuan, Zhongliang Hu, Ruomei Wu, Qilong Liu,