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Testing device and method for hanging-drop method solid surface free energy

A solid surface and testing device technology, applied in measuring devices, surface tension analysis, surface/boundary effects, etc., can solve problems such as poor contact angle accuracy and high error in estimation model analysis, and achieve convenient operation, high promotional value, and measured value high precision effect

Pending Publication Date: 2019-01-22
上海梭伦信息科技有限公司
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  • Abstract
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Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a device and method for testing the free energy of the solid surface by the pendant drop method, so as to solve the poor accuracy of the contact angle test using the Sessile drop method (Sessile drop method) in the existing free energy test of the solid surface. , surface free energy estimation model analysis error is high, these two core issues, in order to meet the purpose of high-precision testing of the physical and chemical properties of solid materials in the research of new materials

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Embodiment Construction

[0034] In order to easily understand the technical means, creative features, goals and effects of the present invention, the present invention will be further described below in conjunction with specific illustrations.

[0035] Such as Figure 1-Figure 4 Shown, a kind of pendant drop method solid surface free energy testing device, comprises the rotating mechanism 1 that can rotate 360 ​​degrees in the vertical plane, the lifting mechanism 2 that is fixed on the described rotating mechanism 1 and is fixed on the described lifting mechanism The adjustable sample table 3 on the 2 and the sample holder 4 fixed on the adjustable sample table 3, the sample holder 4 is fixed with the tested sample 7, the surface of the tested sample 7 has water droplets, and the water droplets are tested according to different Rotating state forms hanging drop 6 or stop drop 5.

[0036] Further, the rotating mechanism 1 includes a bracket 11 and an optical rotating platform 12 vertically fixed on t...

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Abstract

The invention discloses a testing device and method for hanging-drop method solid surface free energy, and belongs to the technical field of interface chemistry analysis and testing. The device comprises a rotation mechanism capable of rotating for 360 degrees in a vertical surface, a lifting mechanism fixed on the rotation mechanism, an adjustable sample table fixed on the lifting mechanism, anda sample fixture fixed on the adjustable sample table. The testing device capable of rotating for 360 degrees is arranged to form a contact angle value of a solid material under a hanging-drop methodstate; the surface tension value of liquid during the hanging-drop method and a corrected 3D contact angle value are simultaneously tested to effectively avoid an obvious influence of the lagging contact angle on a testing result during hanging-drop method contact angle measurement, testing accuracy is improved, the scientificity and the reliability of a value testing result are improved, value testing accuracy is high, operation is convenient, and the device has a very high promotion value.

Description

technical field [0001] The patent of the present invention relates to a test device and corresponding test method for testing the surface free energy of solid materials by the pendant drop method, which are used to characterize the solid-air interface and solid-liquid or solid-liquid-liquid three-phase system of solid materials The physical and chemical properties of the interface belong to the technical field of interface chemical analysis and testing. Background technique [0002] The surface free energy of a solid is the most important index to characterize the physical and chemical properties of a solid material. At present, the usual test method for free energy of solid surface is to test the contact angle under the condition of sessiledrop formed on the surface of solid material, and adopt methods including Owens, equation of state (Professor A.W.Neumann), Acid base , Wu and other mathematical models for analysis. The definition of contact angle is described on page ...

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Application Information

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IPC IPC(8): G01N13/00G01N13/02
CPCG01N13/00G01N13/02
Inventor 施健辉施语辰
Owner 上海梭伦信息科技有限公司
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