| 快速升温条件下聚甲基丙烯酸甲酯的燃烧机理 |
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| 引用本文： | 曾文茹,李疏芬,周允基. 快速升温条件下聚甲基丙烯酸甲酯的燃烧机理[J]. 高分子材料科学与工程, 2003, 19(6): 183-186 |
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| 作者姓名： | 曾文茹 李疏芬 周允基 |
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| 作者单位： | 1. 中国科学技术大学化学物理系,安徽,合肥,230026
2. 香港理工大学屋宇设备工程学系,中国,香港 |
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| 基金项目： | 香港理工大学策略性学术发展领域高密度都市先进建筑科技基金(1-A038)资助 |
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| 摘 要： | 用色谱和质谱研究了快速升温条件下PMMA以及单体MMA在空气和氩气中的不同温度下的热反应，推测了PMMA在空气中燃烧的主要历程。结果表明，在快速升温条件下，PMMA首先降解为单体MMA，而后MMA分解，生成甲醇、甲烷、丙烯、2-甲基丙烯和丙酮等可燃性气态小分子，最后气态小分子与氧反应发生燃烧。在较高温度下，MMA也可直接与氧反应，生成丙酮酸甲酯、甲醛和丙酮，但此反应在PMMA的燃烧历程中处于次要地位。
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| 关 键 词： | 快速升温条件 聚甲基丙烯酸甲酯 燃烧机理 热稳定性 有机玻璃 |
| 文章编号： | 1000-7555(2003)06-0183-04 |
| 修稿时间： | 2001-12-10 |
STUDY OF THE COMBUSTION MECHANISM OF POLY (METHYL METHACRYLATE) |
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| ZENG Wen-ru,LI Shu-fen,CHOU Yun-ji. STUDY OF THE COMBUSTION MECHANISM OF POLY (METHYL METHACRYLATE)[J]. Polymer Materials Science & Engineering, 2003, 19(6): 183-186 |
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| Authors: | ZENG Wen-ru LI Shu-fen CHOU Yun-ji |
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| Affiliation: | ZENG Wen-ru~1,LI Shu-fen~1,CHOU Yun-ji~2 |
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| Abstract: | Combustion of PMMA and monomer MMA at different temperature were studied using mass spectrometry and gas chromatography with a high heating rate and the main combustion mechanism of PMMA was speculated. The results indicate that, at high heating rate, combustion of PMMA occurs in three broad stages: first, PMMA is heated and degrades to generate MMA; then, MMA decomposes to produce small molecule products; finally, the small molecules burn. In additional, at high temperature, MMA can react with oxygen directly and produce methyl pyruvate, formaldehyde and acetone, but the reaction is minor in the process of PMMA combustion. |
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| Keywords: | PMMA high heating rate combustion mechanism |
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