实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相...实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相中烷基酚聚氧乙烯聚氧丙烯醇醚浓度5g/L。实验结果表明:作为稠油乳化降粘剂,该嵌段聚醚在烷基链长为C8～C18时均可使用,C8～C12时效果较好,C9的效果最好,形成的稠油乳状液粘度280mPa·s,稳定时间240min;壬基酚聚氧乙烯聚氧丙烯醇醚(EP EO PO)中EO加成数占EO+PO加成数的50%～95%时,乳状液粘度小于400mPa·s;用Davies法计算的HLB值在13～17时,使用4g/LEP EO PO形成的乳状液粘度小于300mPa·s;在水相中有2.0×104mg/LCa2++Mg2+存在时该乳化降粘剂可耐浓度≤2.0×105mg/L的NaCl;在有8.0×104NaCl和2.0×104mg/LCa2++Mg2+存在下,温度从35℃升高到80℃时,乳状液粘度和稳定时间均下降,90℃时乳状液发生反相,EP EO PO的使用温度为35～80℃。图4表3参4。展开更多
In this paper, the self-assembly of PS 43-b-PEO 45-b-PS 43 triblcok copolymer was investigated. The colloids were made by firstly dissolving the copolymer in the common solvents, including THF, 1,4-dioxane, and DMF, t...In this paper, the self-assembly of PS 43-b-PEO 45-b-PS 43 triblcok copolymer was investigated. The colloids were made by firstly dissolving the copolymer in the common solvents, including THF, 1,4-dioxane, and DMF, then droping water into the corresponding copolymer solution to induce the self-assembly. The aggregates prepared were characterized with TEM and AFM techniques. The experimental results demonstrated that the self-assembled vesicles were formed when THF and 1,4-dioxane were used as the common solvents to dissolve the copolymer, comparatively, using DMF as the common solvent resulted in the formation of spherical aggregates. The self-assembled aggregates observed, possessing hierarchical structures, could be used as either the nanostructures themselves for drug delivery systems, separations, catalysts, and so on, or templates or building blocks for more complex structures.展开更多
文摘实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相中烷基酚聚氧乙烯聚氧丙烯醇醚浓度5g/L。实验结果表明:作为稠油乳化降粘剂,该嵌段聚醚在烷基链长为C8～C18时均可使用,C8～C12时效果较好,C9的效果最好,形成的稠油乳状液粘度280mPa·s,稳定时间240min;壬基酚聚氧乙烯聚氧丙烯醇醚(EP EO PO)中EO加成数占EO+PO加成数的50%～95%时,乳状液粘度小于400mPa·s;用Davies法计算的HLB值在13～17时,使用4g/LEP EO PO形成的乳状液粘度小于300mPa·s;在水相中有2.0×104mg/LCa2++Mg2+存在时该乳化降粘剂可耐浓度≤2.0×105mg/L的NaCl;在有8.0×104NaCl和2.0×104mg/LCa2++Mg2+存在下,温度从35℃升高到80℃时,乳状液粘度和稳定时间均下降,90℃时乳状液发生反相,EP EO PO的使用温度为35～80℃。图4表3参4。
文摘In this paper, the self-assembly of PS 43-b-PEO 45-b-PS 43 triblcok copolymer was investigated. The colloids were made by firstly dissolving the copolymer in the common solvents, including THF, 1,4-dioxane, and DMF, then droping water into the corresponding copolymer solution to induce the self-assembly. The aggregates prepared were characterized with TEM and AFM techniques. The experimental results demonstrated that the self-assembled vesicles were formed when THF and 1,4-dioxane were used as the common solvents to dissolve the copolymer, comparatively, using DMF as the common solvent resulted in the formation of spherical aggregates. The self-assembled aggregates observed, possessing hierarchical structures, could be used as either the nanostructures themselves for drug delivery systems, separations, catalysts, and so on, or templates or building blocks for more complex structures.
