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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