公开(公告)号：US4250741A

公开(公告)日：1981-02-17

申请号：US34644

申请日：1979-04-30

申请人： L. Edward Scriven, II ,  Yee Seeto ,  Carl D. Manning

发明人： L. Edward Scriven, II ,  Yee Seeto ,  Carl D. Manning

IPC分类号： G01N13/02

CPC分类号： G01N13/02

摘要： An improved instrument for the precise measurement of interfacial tension between two fluid phases by means of a drop of the less dense fluid surrounded by the more dense fluid, both fluids spinning together in gyrostatic equilibrium. Elements of the invention eliminate departures from gyrostatic equilibrium which went unrecognized in the prior art. These elements are based on hydrodynamic principles unknown in the prior art. The instrument is characterized by the combined use of air bearings and sample-holder mountings which reduce vibrations and eccentricities, eliminate temperature gradients within the sample, and assure that interfering hydrodynamic flows are suppressed. Other improvements include biprecision sample tube, full visual access to the spinning drop, leveling provisions, timing belt transmission, avoidance of bearing heating and wear problems, and convenient control of sample temperature.

摘要翻译： 一种改进的仪器，用于通过由较稠密的流体包围的较小致密流体的液滴精确测量两个流体相之间的界面张力，两种流体在陀螺静力平衡中一起旋转。 本发明的元件消除了在现有技术中未被认识到的陀螺静力平衡的偏离。 这些元素基于现有技术中未知的流体力学原理。 该仪器的特点是结合使用空气轴承和样品架架，减少振动和偏心，消除样品内的温度梯度，并确保抑制干扰流体动力学流动。 其他改进包括双精度样品管，完全可视化进入纺丝滴，流平装置，同步带传动，避免轴承加热和磨损问题，以及方便的样品温度控制。