Apparatus and method for testing light-gas surface tension and light-liquid interfacial tension by using wilhelmy plate method
A technology of surface tension and test liquid, which is applied in the direction of surface tension analysis, etc., can solve the problems of no buoyancy correction, contact angle correction, inability to test liquid-liquid interfacial tension, and large application limitations, so as to improve accuracy and application ability , Wide application effect
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[0025] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail; In the figure: 1-load cell, 2-connecting rod, 3-platinum plate, 4-sample dish, 5-displacement platform, 6-back cover, 7-temperature sensor, 8-sample stage, 9-measured sample, 10-gas or low-density phase liquid, 11-water circulation port, 12-temperature control sample pool, 13-level adjustment bubble, 14-chassis, 15-displacement Platform support, 16-displacement sensor, 17-circuit board, 18-power supply and control components.
[0026] See figure 1 , the present invention adopts a platinum plate method to test the tension of the liquid-gas surface and the tension of the liquid-liquid interface. or liquid-liquid interface, the force situation of the platinum plate is: (1) downward gravity; (2) upward buoyancy; (3) downward liquid-gas surface tension or liquid-liquid interfacial tension; its calculation The formula is:
[0027] P=mg+Lγ·cosθ-shρg ...
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