【摘要】 在金属催化剂的作用下,以烯烃和含氢硅油为原料,利用硅氢加成反应合成有机硅蜡。本实验研究了原料配比、催化剂用量、反应时间、反应温度对硅氢键转化率和产品性能的影响,确定最佳反应条件为:WH=1.36%,n(C=C)∶n(Si—H)=1.15∶1,催化剂用量为1.15μg/g,反应温度为135℃,反应时间为8.5 h。并对合成产物进行了红外表征,结果显示长链烷基已接枝到聚硅氧烷上。更多还原

【Abstract】 Silicone waxes were hydrosilylated from polyhydrosiloxane and olefins in the presence of metal catalyst.The effects of factors,such as molar ratio of reactants,dosage of the catalyst,reaction time and temperature on Si-H conversion rate and performance of products were investigated as well.The preferential experimental conditions were obtained as: WH=1.36%,the molar ratio of C=C to Si-H is 1.15∶1,the amount of catalyst is 1.15 μg/g,reaction temperature is 135 ℃,reaction time is 8.5 h.The structure of the product was determined by FT-IR and the results indicated that the long chain alkyl has been grafted to the chain of polysiloxane.更多还原