Determining the surface energy test method of fixed materials under variable temperature conditions based on mechanical tests

Abstract

A device for determining the surface energy of solid materials under variable temperature conditions based on mechanical testing. The device is composed of a control system, a constant temperature system and a test system, and the constant temperature system is controlled by the control system, and the test system is used for testing. The structure of the device is simple. It is easy to operate and can accurately measure the overall average surface energy of bulk solid materials, which overcomes the small test range and large errors in the existing technology, especially for heterogeneous solid materials, the test results can only represent the surface energy of the test point, Defects that cannot represent the overall surface energy of solid materials and their changes with temperature have important scientific significance and broad application prospects.

Description

technical field [0001] The invention relates to a device for testing the surface properties of solid materials, in particular to a device for determining the surface energy of solid materials under variable temperature conditions based on mechanical tests. Background technique [0002] Due to the limitations of testing theory and testing technology, the surface energy of solid materials cannot be directly measured. At present, the splitting work method, particle sedimentation method, melting extrapolation method, solution heat method, thin film flotation method, contact angle method, and inverse gas chromatography are mainly used. Indirect test methods such as the method, but there are obvious deficiencies, especially for heterogeneous solid materials such as coal and rock. It is generally believed that the optical method is more suitable, but there are also obvious defects. The surface energy determined by the static contact angle measured by the optical method can only rep...

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Problems solved by technology

[0002] Due to the limitations of testing theory and testing technology, the surface energy of solid materials cannot be directly measured. At present, the splitting work method, particle sedimentation method, melting extrapolation method, solution heat method, thin film flotation method, contact angle method, and inverse gas chromatography are mainly used. Indirect test methods such as method, but there are obvious deficiencies, especially for heterogeneous solid materials such as coal and rock.

It is generally believed that the optical method is more suitable, but there are also obvious defects. The surface energy determined by the static contact angle measured by the optical method can only represent the surface energy of the test point, and cannot accurately characterize the surface energy of the sample as a whole. This situation has seriously affected the accurate measurement of the surface energy of solid materials and the progress of research in related fields.

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