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本文以具有硅苯撑结构的环状有机硅氧烷——十二甲基环三对硅笨撑硅氧烷为单体,用开环聚合方法合成了聚四甲基对硅苯撑硅氧烷.选用硅醇钾催化,环单体有较高的开环聚合活性.通过IR、~1H NMR和~(13)C NMR等证明了聚合物的化学结构.聚合物在空气中的热失重温度较聚二甲基硅氧烷约高110℃,因此热稳定性更好.
In this paper, a cyclic organosiloxane-dodecylcyclohexylsiloxy silsesquioxane with silylene structure was used as monomer to synthesize poly Alkane.The selectivity of ring-opening polymerization was tested by potassium silicon alkoxide.The chemical structure of the polymer was confirmed by IR, 1H NMR and 13 C NMR.The thermogravimetric properties of polymer in air The temperature is about 110 ° C higher than polydimethylsiloxane, so the thermal stability is better.