Method for measuring liquid surface tension based on axisymmetrical liquid drop profile curve and volume
A technology of contour curve and measurement method, applied in the direction of surface tension analysis, etc., can solve problems such as difficult to use interfacial tension test, limit the test range, etc., and achieve the effect of simplifying the test complexity
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Embodiment 1
[0032] Embodiment 1 (known ρ=1000kgm 3 ,g=9.8m / s 2 , Sessile drop method, the standard interfacial tension of the liquid is 72mN / m)
[0033] In order to verify the correctness of the proposed measurement method, this embodiment uses the method of this patent to measure and calculate the parameters of the simulated droplet profile curve to obtain the interfacial tension of the liquid, and compare the interfacial tension with the one used in the simulation. The standard value of liquid interfacial tension is compared to verify the correctness of the measurement method. Documentation [M.Hoorfar andA.W.Neumann, Adv.Colloid Interf.Sci.121,25(2006)] shows that the axisymmetric drop profile curve obtained by the experiment satisfies the Laplace equation, so the simulation based on the Laplace equation obtains The theoretical droplet profile curve is correct, so measuring the profile curve can illustrate the correctness of the measurement method. The simulated droplet profile curve...
Embodiment 2
[0034] Embodiment 2 (known ρ=800kg / m 3 ,g=9.8m / s 2 , pendant drop method, the standard interfacial tension of the liquid is 10mN / m)
[0035] In order to verify the correctness of the proposed measurement method, this embodiment uses the method of this patent to measure and calculate the parameters of the simulated droplet profile curve to obtain the interfacial tension of the liquid, and compare the interfacial tension with the one used in the simulation. The standard value of liquid interfacial tension is compared to verify the correctness of the measurement method. Documentation [M.Hoorfar andA.W.Neumann, Adv.Colloid Interf.Sci.121,25(2006)] shows that the axisymmetric drop profile curve obtained by the experiment satisfies the Laplace equation, so the simulation based on the Laplace equation obtains The theoretical droplet profile curve is correct, so measuring the profile curve can illustrate the correctness of the measurement method. The simulated droplet profile curve...
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