以3-甲基丙烯酰氧丙基三甲氧基硅烷(硅烷偶联剂KH-570)为"桥梁",用溶液聚合法分三步反应合成了一种新型的丙烯酸酯有机硅共聚物.FT-IR、1H-NMR鉴定了丙烯酸酯有机硅共聚物的分子结构.所得树脂的Mw= 43 748,多分散系数为2.32.虽然丙烯酸酯改性的有机硅树脂比有机硅树脂在800 ℃时的质量保持率有所降低,但起始分解温度均有所提高.当丙烯酸甲酯质量分数为20%和40%时,丙烯酸酯改性的有机硅树脂起始分解温度分别比有机硅树脂提高了13 ℃和55 ℃.
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