The stabilizing conditions of W/O microemulsion of Tx 6～C 4H 9OH/c C 6H 12 /H 2O system were studied by visual observation and electrical conductance.The result shows that when the weight ratio of Tx 6 and C 4H 9OH i...The stabilizing conditions of W/O microemulsion of Tx 6～C 4H 9OH/c C 6H 12 /H 2O system were studied by visual observation and electrical conductance.The result shows that when the weight ratio of Tx 6 and C 4H 9OH is 4∶1,the W/O microemulsion sytem has stabilizing and extensive regions,and the system is insensitive to the values of pH at room temperature.In accordance with the theoretical value of HLB,the suitable value of HLB for Tx 6 and C 4H 9OH to compose microemulsion is greater than 9,less than or equal to 10.展开更多
The reverse microemulsion system of Span 80-Tw ee n 80/liquid paraffin/acrylamide-H 2O was prepared, and the effects of n-b utanol,NaCl,Nc were studied with the conductivity method.The stability of re verse microemuls...The reverse microemulsion system of Span 80-Tw ee n 80/liquid paraffin/acrylamide-H 2O was prepared, and the effects of n-b utanol,NaCl,Nc were studied with the conductivity method.The stability of re verse microemulsion was reflected, and the information of its dynamic process wa s obtained by measuring its state changes continuously through testing its elect ronic conductivity by using electrochemistry.The results showed that the Span 80 -Tween 80/liquid paraffin/acrylamide-H 2O system was most stable when the HLB value approached 7.5, and its stability was enhanced when 5.0% (mass) NaCl or 10% (mass) Nc was added into this system.展开更多
The potential equation in the positive sol of aluminium magnesium hydroxide was deduced according to the model of constant surface charge density, and the potential curves in the NaBr solution were obtained. The studi...The potential equation in the positive sol of aluminium magnesium hydroxide was deduced according to the model of constant surface charge density, and the potential curves in the NaBr solution were obtained. The studies of coagulation kinetics showed that the coagulation process of monovalent anions may be divided into a rapid and slow coagulation. The efficiencies in causing coagulation for monovalent anions followed the order Br ->I ->NO - 3>Cl -, which didnt correspond to the lyotropic series. The coagulation value of polyanion had a discrepancy with Shulze Hardy law. The higher the cation valent was, the stronger the stabilization of sol was. [WT5HZ]展开更多
Resin and asphaltene were separated from Daqing crude oil and were dissolved in decane The interfacial viscoelasticity was investigated by applying the controlled stress model of oscillatory ring interfacial rheometer...Resin and asphaltene were separated from Daqing crude oil and were dissolved in decane The interfacial viscoelasticity was investigated by applying the controlled stress model of oscillatory ring interfacial rheometer CIR 100 The effects of resin, asphaltene contents in decane, pH values, and demulsifiers in aqueous phase on interfacial viscoelasticity were studied It was shown the interfacial viscoelasticity of water/decane containing asphaltenes or resins is of the order of 4 higher than that of water/decane, and the interfacial viscoelasticity increased with increasing resin and asphaltene concentrations in decane When the pH value in aqueous phase was about 7,interfacial elasticity approached a maximum Demulsifers in aqueous phase could obviously reduce interfacial viscoelasticity and interfacial展开更多
文摘The stabilizing conditions of W/O microemulsion of Tx 6～C 4H 9OH/c C 6H 12 /H 2O system were studied by visual observation and electrical conductance.The result shows that when the weight ratio of Tx 6 and C 4H 9OH is 4∶1,the W/O microemulsion sytem has stabilizing and extensive regions,and the system is insensitive to the values of pH at room temperature.In accordance with the theoretical value of HLB,the suitable value of HLB for Tx 6 and C 4H 9OH to compose microemulsion is greater than 9,less than or equal to 10.
文摘The reverse microemulsion system of Span 80-Tw ee n 80/liquid paraffin/acrylamide-H 2O was prepared, and the effects of n-b utanol,NaCl,Nc were studied with the conductivity method.The stability of re verse microemulsion was reflected, and the information of its dynamic process wa s obtained by measuring its state changes continuously through testing its elect ronic conductivity by using electrochemistry.The results showed that the Span 80 -Tween 80/liquid paraffin/acrylamide-H 2O system was most stable when the HLB value approached 7.5, and its stability was enhanced when 5.0% (mass) NaCl or 10% (mass) Nc was added into this system.
文摘The potential equation in the positive sol of aluminium magnesium hydroxide was deduced according to the model of constant surface charge density, and the potential curves in the NaBr solution were obtained. The studies of coagulation kinetics showed that the coagulation process of monovalent anions may be divided into a rapid and slow coagulation. The efficiencies in causing coagulation for monovalent anions followed the order Br ->I ->NO - 3>Cl -, which didnt correspond to the lyotropic series. The coagulation value of polyanion had a discrepancy with Shulze Hardy law. The higher the cation valent was, the stronger the stabilization of sol was. [WT5HZ]
基金国家自然科学基金资助项目 (No 5 0 1740 11)"九.五"国家重点攻关项目 (No 96-12 1-0 6-0 7)~~
文摘Resin and asphaltene were separated from Daqing crude oil and were dissolved in decane The interfacial viscoelasticity was investigated by applying the controlled stress model of oscillatory ring interfacial rheometer CIR 100 The effects of resin, asphaltene contents in decane, pH values, and demulsifiers in aqueous phase on interfacial viscoelasticity were studied It was shown the interfacial viscoelasticity of water/decane containing asphaltenes or resins is of the order of 4 higher than that of water/decane, and the interfacial viscoelasticity increased with increasing resin and asphaltene concentrations in decane When the pH value in aqueous phase was about 7,interfacial elasticity approached a maximum Demulsifers in aqueous phase could obviously reduce interfacial viscoelasticity and interfacial
