以聚氧乙烯聚氧丙烯环氧基醚和聚氧乙烯聚氧丙烯甲基醚为支链,聚硅氧烷为主链,在异丙醇溶剂下,以氯铂酸为催化剂,通过硅氢加成反应,合成出聚醚聚硅氧烷类原油破乳剂。得到较佳的合成条件为:n(环氧醚)∶n(甲基醚)=1∶1,n(硅氢键)∶n(双键)=1∶1.15,反应温度105℃,反应时间5 h,催化剂用量30μg/g(相对于反应物总质量)和溶剂用量40%(以原料总质量计),在该条件下转化率达到92.62%,并通过FTIR和1HNMR对产物的分子结构进行了表征,谱图分析证明合成了预期产物。表面张力仪测定了其临界胶束质量浓度为0.7 g/L,最低表面张力24.2 mN/m。该破乳剂在破乳温度70℃,用量为100 mg/L条件下,对延长石油永平原油的脱水率达到88.42%,具有较好的破乳性能。 Polyoxyethylene polyoxypropylene epoxy ether and polyoxyethylene polyoxypropylene methyl ether as a chain, polysiloxane as the main chain, in isopropanol solvent, with chloroplatinic acid as catalyst, hydrosilylation Addition reaction, synthesis of polyether polysiloxane crude oil demulsifier. The best synthesis conditions were as follows: n (epoxy ether): n (methyl ether) = 1: 1, n (double bond) = 1: 1.15, reaction temperature 105 ℃, reaction time 5 h, the amount of catalyst 30μg / g (relative to the total mass of the reactants) and the amount of solvent 40% (based on the total mass of the raw materials), the conversion rate reached 92.62% under the conditions and the molecular structure of the product was carried out by FTIR and 1HNMR Characterization and spectral analysis demonstrated the synthesis of the expected product. Surface tension meter measured the critical micelle mass concentration of 0.7 g / L, the lowest surface tension of 24.2 mN / m. The demulsifier at the demulsification temperature of 70 ℃, the amount of 100 mg / L conditions, the extended oil Yongping crude oil dehydration rate of 88.42%, has good demulsification performance.