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Porous material wettability measurement device and method based on infrared image processing

A technology of infrared image processing and porous materials, which is applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problems of incomplete fit, quantitative evaluation of infiltration uniformity, and difficulty in accurate boundary of colorless liquid diffusion area Judgment and other problems to achieve the effect of solving incomplete measurement results

Active Publication Date: 2017-06-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can reflect the wettability of porous media materials to a certain extent, but cannot quantitatively evaluate its wettability uniformity, so it cannot comprehensively reflect the wettability of porous materials
Lu Longsheng and others proposed a method of using digital image processing to accurately observe the movement of colorless liquid in porous materials in the invention patent "Digital Image Processing Based on Wetting Performance Test Device for Porous Metal Materials". This method is a better solution Solved the problem that it is difficult to accurately judge the boundary of the colorless liquid diffusion area encountered in the measurement of the wettability of porous materials by the liquid drop observation method
However, there are still very few methods for measuring the wettability of porous materials. In the face of a wide variety of porous materials, these methods may not be completely suitable for some materials. Therefore, it is necessary to propose a novel method. When the liquid droplet observation method is used to measure the wettability of porous materials, it can accurately judge the boundary of the diffusion area when the liquid working medium infiltrates in the porous material, and provide some new ideas for the quantitative measurement of the wettability of porous materials.

Method used

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  • Porous material wettability measurement device and method based on infrared image processing
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  • Porous material wettability measurement device and method based on infrared image processing

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Embodiment 1

[0048] Such as figure 1 and figure 2 As shown, the porous material wettability measurement device based on infrared image processing includes a lifting platform 6 for placing a sample 1, an infrared thermal imager 3 placed above the lifting platform 6, and a high-speed camera 7 placed in front of the lifting platform 6 , the computer 4 connected to the infrared thermal imager 3 and the high-speed camera 7 data transmission lines, the injector 2 for injecting the liquid working medium 5 placed on one side of the lifting platform 6; the computer 4 is equipped with a device for processing infrared images The data processing software Research IR that comes with the infrared camera.

[0049] The injector 2 is arranged on one side of the lifting platform 6 through a movable support, and the movable support can move freely along any direction, so as to facilitate the necessary adjustment of the position and posture of the injector 2 .

Embodiment 2

[0051] In the method of measuring the wettability of porous materials using the measuring device, carbon fiber felt porous materials with two different structural parameters, A and B, are selected as the porous materials to be tested. The size is 40mm×40mm, and their structural parameters are: A sample (See Figure 7 ): porosity 88.6%; B sample (see Figure 8 ): the porosity is 77.1%; the preparation mass fraction is 50% ethanol aqueous solution as liquid working fluid 5, comprises the steps:

[0052] (1) Place A sample on the lifting platform 6 and fix it;

[0053] (2) adjust the thermal imager 3 so that the A sample presents a clear infrared image in the software Research IR;

[0054] (3) Move the movable support so that the needle tip of the syringe 2 is 4 mm above the sample A, and the angle between the syringe 2 and the sample is about 30° to 40°;

[0055] (4) adjust the focal length of the high-speed camera 7 so that the needle point of the syringe 2 presents a clear ...

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Abstract

The invention discloses a porous material wettability measurement device based on infrared image processing. The device comprises a lifting platform for lifting platforms, a thermal infrared imager placed above the lifting platform, a high speed camera disposed in front of the lifting platform, a computer for receiving test data of the thermal infrared imager and the high speed camera, and a syringe placed on one side of the lifting platform for injecting a liquid working medium. The invention also discloses a porous material wettability measurement method based on infrared image processing. The method provided by the invention can acquire the liquid diffusion process and the diffusion area shape when liquid drops infiltrate a porous material, then evaluates the uniformity of the porous material wettability according to the diffusion area shape, effectively solves the defect of uncomprehensive measurement result in imbibition weighing method, is especially suitable for diffusion of colorless transparent liquid working media, and provides a reliable means for test and evaluation of porous material wettability.

Description

technical field [0001] The invention relates to the field of measuring the wettability of porous materials, in particular to a device and method for measuring the wettability of porous materials based on infrared image processing. Background technique [0002] Porous material is a material with a network structure composed of interconnected or closed pores. Because there are a large number of regularly or randomly distributed pores inside, it has good adsorption and permeability properties, and is widely used as a filter. materials, mass transfer materials, etc. In these applications, wettability is a key indicator of porous materials, which reflects the flow and diffusion performance of gas or liquid in porous materials, so the measurement of wettability of porous materials plays an important guiding role in its application. [0003] At present, there are two main methods for measuring the wettability of porous materials: drop observation method and liquid absorption weigh...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 陆龙生张宾梁林生王红飞万珍平
Owner SOUTH CHINA UNIV OF TECH
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