以工业化的γ-氯丙基三甲氧基硅烷为原料,在浓盐酸为催化剂的条件下制备了八氯丙基多面体低聚倍半硅氧烷(OCPS)。研究了反应温度、反应物的投料比对产物收率的影响。得到了最佳合成产物的条件:在40°C的反应温度下,水解缩合20天,γ-氯丙基三甲氧基硅烷、浓盐酸、甲醇的体积比为5∶4∶100时产率最高,达到28.5%,并对产物结构进行了1HNMR1、3CNMR2、9SiNMR、FT-IR、GPC表征。 Octa-chloropropyl polyhedral oligomeric silsesquioxane (OCPS) was prepared from industrial γ-chloropropyltrimethoxysilane with concentrated hydrochloric acid as the catalyst. The effects of reaction temperature, reactant feed ratio on product yield were investigated. The optimum synthesis conditions were obtained: the yield was the highest when the volume ratio of γ-chloropropyltrimethoxysilane, concentrated hydrochloric acid and methanol was 5: 4: 100 at the reaction temperature of 40 ° C for 20 days , Which reached 28.5%. The product structure was characterized by 1HNMR1, 3CNMR2, 9SiNMR, FT-IR and GPC.