Device for determining surface energy of solid material in variable temperature condition based on mechanical test

Abstract

The invention relates to a device for determining surface energy of a solid material in a variable temperature condition based on mechanical test. The device is composed of a control system, a constant temperature system and a testing system and controls the constant temperature system through the control system. The device carries out a test through the testing system. The device is simple in structure and convenient to operate, can measure the integral average surface energy of the solid material accurately, overcomes the defects that in the prior art, the testing range is small and the error is great, the testing result only represents the surface energy of a testing point especially for a heterogeneous solid material rather than the integral surface energy of the solid material and change of the surface energy with temperature, and has important scientific meaning and a wide application prospect.

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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