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首页> 外文期刊>Journal of Applied Polymer Science >EFFECTS OF INORGANIC OXIDES ON POLYMER BINDER BURNOUT .2. POLY(BUTYL METHACRYLATE)
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EFFECTS OF INORGANIC OXIDES ON POLYMER BINDER BURNOUT .2. POLY(BUTYL METHACRYLATE)

机译：无机氧化物对聚合物粘合剂燃烧的影响2。聚甲基丙烯酸丁酯

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摘要

The effects of silica, mullite, alpha-alumina, and gamma-alumina on the nonoxidative thermal degradation of poly(butyl methacrylate) are described. Under conditions similar to those employed for nonoxidative ceramic sintering, more volatile alkyl aromatic species were detected when polymer/oxide samples were heated than when the neat polymer was heated. Relative to the neat polymer, all of the inorganic oxides inhibited monomer evolution and promoted an ester decomposition reaction that yielded butene. Infrared analysis indicated that poly(methacrylic acid) segments resulting from ester decomposition reacted to form anhydride. The presence of water vapor during the thermal degradation of the neat polymer and polymer/oxide samples lowered the temperatures at which monomer evolution maximized but had little effect on butene evolution. When the polymer was coated on gamma-alumina, significant amounts of carboxylate were formed above 400 degrees C as a result of deprotonating poly(methacrylic acid) functionalities on the gamma-alumina surface. (C) 1996 John Wiley & Sons, Inc. [References: 26]
机译：描述了二氧化硅，莫来石，α-氧化铝和γ-氧化铝对聚（甲基丙烯酸丁酯）的非氧化热降解的影响。在类似于非氧化陶瓷烧结所采用的条件下，加热聚合物/氧化物样品时比加热纯聚合物时检测到更多的挥发性烷基芳族物质。相对于纯聚合物，所有无机氧化物均抑制单体的释放并促进酯分解反应，从而生成丁烯。红外分析表明，由酯分解产生的聚（甲基丙烯酸）链段反应形成酸酐。在纯聚合物和聚合物/氧化物样品热降解过程中水蒸气的存在降低了单体释放最大化的温度，但对丁烯的释放影响很小。当将聚合物涂覆在γ-氧化铝上时，由于γ-氧化铝表面上的聚（甲基丙烯酸）官能团去质子化，在400℃以上形成大量的羧酸盐​​。 （C）1996 John Wiley＆Sons，Inc. [参考：26]

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