【摘要】 对泡沫状多孔聚碳硅烷(PCS)的合成反应条件进行了较为详细的研究,通过控制化学反应的温度、压力和反应时间制备出了熔点高达380℃、相对分子质量Mn>3 000、陶瓷产率达79%(质量分数),密度<0.6 g/cm3的多孔聚合物。对不同反应条件下所制得的多孔PCS的性能进行了表征,并利用IR、TG等手段对泡沫状多孔PCS的热解机理进行了初步探讨。更多还原

【Abstract】 A porous polycarbosilane（PCS） is prepared.The molecular weight of the PCS can be controlled by reaction time,pressure and temperature.The melting-point of the PCS obtained in this method is more than 380℃,its molecular weight（Mn） reaches up to 3 000,and the ceramic yield is more than 79wt%,the density of this product is less than 0.6 g/cm³.The properties of the PCS are examined,and the primary thermo-decomposition mechanism of these polycarbosilanes is explored by IR and TG.更多还原