界面张力

The concentration of the polymer that can increase the viscosity of the system had nothing with the interfacial tension.

当烷醇酰胺浓度超过0.3%时，界面张力反而升高；部分水解聚丙烯酰胺的浓度对二元体系的界面张力影响很小，它只是增加了体系的黏度。

In order to know the change of dynamic interfacial tensions of different surfactants in different fields.

本文首先对几种表面活性剂对各自区块和交叉区块的动态界面张力进行了研究，以了解不同表面活性剂对不同采油区块的动态界面张力情况。

Three types of interfacial tension curves were observed. The first curve comprised two curves that were located on either side of 1:1 molar ratio, and the interfacial tension decreased with the increase of excessed surfactant component. The second one was a saddle-shaped curve that strode over the 1:1 molar ratio. The third type was a saddle-shaped curve that was located beside the 1:1 molar ratio.

观察到三种界面张力曲线类型，第一类为摩尔比1：1的两边的两条曲线，界面张力随过剩表面活性剂组分的比例增加而降低；第二类为一条跨过摩尔比1：1的马鞍型曲线；第三类为位于摩尔比1：1的一边的一条马鞍型曲线。

By using a Du Nouy ring tensiometer, the interfacial tensions havebeen measured for seven ternary systems at 25℃.

采用Du Nouy环式界面张力仪，测定了在25℃下七个三元体系45个不同组成时的界面张力数据。

In order to measure the low liquid-liquid interfacial tension,a spinning drop interfacial tensiometer is presented in this paper.

本文自行研制了一台用于低或超低界面张力测定装置—旋转液滴界面张力测定仪。

The dynamic interfacial tension between heavy alkylbenzene sulfonate and crude of Daqing oilfield was measured using the spinning drop tensiometer.

测定了重烷基苯磺酸盐溶液与大庆原油间的动态界面张力，考察了NaOH、Na2 CO3 、部分水解聚丙烯酰胺和重烷基苯磺酸盐对动态界面张力的影响。

The results of magnesium and calcium ions tolerance test indicated that the modified SPS, synthesized from the above two methods,has good chelation with magnesium and calcium ions for the crablike carboxyl and ester group and increase the reaction weight with magnesium and calcium ions for addition of hydrophilic group.Both of the two modified petroleum sulfonates could produce ultra-low interfacial tension at calcium and magnesium ions concentration lower than 600 mg/L,whereas the general petroleum sulfonates could only produce ultra-low value below 300 mg/L.

耐钙镁离子能力测试结果，以大庆炼化公司两种渣油为原料，采用上述两种合成方法制备的改性石油磺酸钠，由于产物中引入蟹爪状羧酯基，对钙镁离子有较强的螯合作用，同时增加了亲水基，增大了表面活性剂分子与钙镁离子的反应量，因而在600mg/L的钙镁离子溶液中获得10-3级的超低界面张力；而普通石油磺酸钠仅能在300mg/L的钙镁离子溶液中获得超低界面张力。

In the H〓SO〓 system, the interfacial tension decreased much lower in three diluents compared with that of HNO〓 and HCl system.

在硫酸水溶液中，BODMAC在三种稀释剂中的界面张力最低；而对于盐酸和硝酸体系，不同稀释剂中，BODMAC的界面张力降低的情况不同。

For the prediction of vapor liquid interfacial tension of fluid mixtures,hard sphere surface tension model of pure liquid proposed by Reiss has been extended to mixtures using two vdW 1 mixing rules.The surface tensions for 64 binary liquids have been correlated with only average relative deviations of 0.80%.With the parameters obtained from the correlation of binary system data,this method has been satisfactorily applied t...

应用定标粒子理论表面张力方程以及 vd W- 1型混合规则，计算了混合流体的表面张力，对 64个二元体系，7个三元体系的表面张力计算平均相对偏差为 0 。80 %和 2 。43%；应用 Boudh- Hir和 Mansoori提出的部分互溶体系的界面张力模型，给出了硬球直径的确定方法，对 37个部分互溶二元含水体系的界面张力进行了计算，绝对平均偏差为 1 。5m N/m，相对平均偏差为 8.9%，计算精度满意。

The theoretical surface tension of Na2SO4 solution is in good agreement with the results of the method based on the EWOD theory in this paper.

进而计算了内芯与液滴的界面张力，这种方法可用于一般固液界面张力的测量。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。