聚醚和丙烯酸酯共改性有机硅的制备及在原油破乳中的应用性能

Synthesis of polyether and acrylate modified silicone and its application in crude oil demulsification

甲苯为溶剂,氯铂酸作催化剂,侧链型含氢硅油(PHMS)和烯丙基聚醚(FAE)及甲基丙烯酸甲酯(MMA)经硅氢化加成反应制得一种聚醚和丙烯酸酯共改性有机硅(PEAMS).用单因素实验法探讨了反应条件如物料配比、反应温度和反应时间等因素对反应产物破乳性能的影响,确定了最佳反应条件,PEAMS的结构用红外光谱(IR)进行了表征,并考察了其对原油的破乳性能.结果表明:PEAMS适宜合成反应条件为m(PHMS)∶m(FAE)∶m(MMA)=1∶0.675∶0.035、反应温度85℃、反应时间5h.谱图分析证实合成了预期的产物.在PHMS链段相同时,随着接枝聚醚FAE用量的增加、MMA用量的减小,PEAMS的脱水率呈先增大后减小的趋势.在破乳温度60℃、破乳时间60 min、加剂量100 mg/L的条件下,PEAMS对模拟原油乳状液的脱水率达92%,油水两相分离且界面清晰.

The polyether and acrylate modified silicone(PEAMS)was prepared by hydrosilylation of side chain type hydrogen-containing silicone oil(PHMS)with allyl polyether(FAE)and methyl methacrylate(MMA)in the chloroplatinic acid as catalyst and toluene as the solvent.The reaction conditions such as the ratio of the reaction materials,reaction temperature and reaction time were investigated by using the single factor test.The optimum reaction conditions were determined.The structure of PEAMS was characterized by infrared spectroscopy(IR)and its the demulsification performance of crude oil was investigated.Experimental results were showed that the optimum reaction conditions are as follows that m(PHMS)∶m(FAE)∶m(MMA)=1∶0.675∶0.035,reaction temperature is 85℃,reaction time is 5 h.And spectra analysis shows that the expected product is synthesized.When the PHMS segment is the same,the dehydration rate of PEAMS increased first and then decreased with the increase of the amount of the grafted polyether FAE and the decrease of the amount of MMA.The dehydration rate of PEAMS to simulated crude oil emulsion can reach for 92%under the demulsification temperature of 60℃,demulsification time of 60 min and dosage of 100 mg/L.And the oil-water two-phase separation and interface is clear.