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

A technology of solid materials and conditions, applied in measurement devices, analytical materials, surface tension analysis, etc., can solve the problems that affect the accurate test progress of the surface energy of solid materials, the surface of solid materials cannot be directly measured, and the surface energy cannot be accurately characterized. Simple structure, easy operation and accurate characterization

Active Publication Date: 2019-02-22
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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

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Embodiment 1

[0026] as attached figure 1 Said, the implementation of the present invention provides a device based on mechanical testing to determine the surface energy of solid materials under variable temperature conditions, including a control system, a constant temperature system and a test system; wherein the control system includes: a console 1, a constant temperature pool lift button 2. Support frame 3, constant temperature pool lifting device 4, sample lifting device 5, sample displacement data transmission line 18, force sensor data transmission line 19, temperature sensor data transmission line 20, console output line 21 and computer 22; among them, the constant temperature system Including: constant temperature water bath box 6, constant temperature water bath regulator 7, constant temperature pool 8, constant temperature pool inlet pipe 9, constant temperature pool outlet pipe 10 and peristaltic pump 11; the test system includes: solution pool 12, detection solution 13, temperat...

Embodiment 2

[0029] Implement a kind of device based on mechanical test to determine the surface energy of solid material under variable temperature condition, be on the basis of embodiment 1, further embodiment is to adjust the height of constant temperature pool 8 and solution pool 12 by lifting button 2 and lifting device 4, The adjustable height range is 100mm; the accurate lifting of the sample 16 and the platinum suspension ring 17 in the detection solution is realized through the sample lifting device 5 and the displacement sensor 23, the adjustable height range is 30mm, and the adjustable speed range is 1-20mm min -1 .

Embodiment 3

[0031] Implementation of a device based on mechanical tests to determine the surface energy of solid materials under variable temperature conditions is based on Example 1. A further embodiment is to regulate and maintain the temperature of the medium in the water bath box 6 through a thermostat 7. The medium contains but Not limited to water, oil, alcohol, liquid nitrogen, and the constant temperature medium is delivered to the constant temperature pool 8 by the constant temperature pool liquid inlet pipe 9 and the peristaltic pump 11, and the constant temperature pool is returned by the constant temperature pool outlet pipe 10, and the constant temperature pool 8 and the constant temperature pool are realized by continuous circulation of the constant temperature medium. The temperature inside the solution pool 12 is constant, and the medium temperature can be adjusted in the range of -30-+150°C.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01N13/02
CPCG01N13/00G01N13/02
Inventor 康健婷李立功尹博张智敏张晓雨张润旭汪李龙康天合
Owner TAIYUAN UNIV OF TECH
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