| Analysis of Pyrolysates for Phenol Formaldehyde Resin by Py-GC/MS |
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| 作者姓名： | 钱和生 喻爱芳 |
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| 作者单位： | [1]Research Center for Analysis and Measurement, Donghua University, Shanghai 200051 [2]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 200051 |
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| 摘 要： | Pyrolysis of phenol formaldehyde resin has been investigated by Pyrolysis Gas Chromatography-Mass Spectroscopy at the different temperatures from 500℃ to 750℃. Its composition of pyrclysates has been analyzed. Several compounds, especially benzene, toluene, p-xylene could only be formed above 500-550℃. Howerver, peak intensities for some pbend derivatives were decreased at the higher temperature. During pyrolysis, for thermo-setting phenol formaldehyde resins, polymeric chain scissions take place as a successive removal of the monomer units from the polymeric chain. The chain scissions are followed by secondary reactions, which leads to a variety of compounds. Addition reactions can also take place among the double-bond compounds during pyrolysis.
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| 关 键 词： | 苯酚甲醛树脂 高温分解 色谱-质谱联用 成分 |
| 收稿时间： | 2004-09-17 |
Analysis of Pyrolysates for Phenol Formaldehyde Resin by Py-GC/MS |
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| QIAN He-sheng,YU Ai-fang.Analysis of Pyrolysates for Phenol Formaldehyde Resin by Py-GC/MS[J].Journal of Donghua University,2005,22(4):20-24. |
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| Authors: | QIAN He-sheng YU Ai-fang |
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| Abstract: | Pyrolysis of phenol formaldehyde resin has been investigated by Pyrolysis Gas Chromatography- Mass Spectroscopy at the different temperatures from 500℃ to 750℃. Its composition of pyrolysates has been analyzed. Several compounds, especially benzene, toluene, p-xylene could only be formed above 500-550℃. However, peak intensities for some phenol derivatives were decreased at the higher temperature. During pyrolysis,for thermo-setting phenol formaldehyde resins, polymeric chain scissions take place as a successive removal of the monomer units from the polymeric chain. The chain scissions are followed by secondary reactions, which leads to a variety of compounds. Addition reactions can also take place among the double-bond compounds during pyrolysis. |
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| Keywords: | phenol formaldehyde resin pyrolysis gas chromatography mass spectroscopy |
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