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Device and method for measuring gas diffusion coefficient of low-strength, low-permeability coating material

A coating material and low permeability technology, which is applied in the field of solid coating measurement devices, can solve the problems that the coating material cannot measure the shape, cannot obtain a larger active area, and the measurement data is inaccurate.

Active Publication Date: 2019-04-23
辽宁博仕创业服务中心管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Low-strength coating materials are not enough to withstand the large pressure difference on both sides, and the large pressure difference cannot be used to speed up the gas transmission rate; the coating material cannot form an effective measurement shape alone, and cannot obtain a larger active area for data Measurement; if the thickness is increased, the gas diffusion data cannot be obtained quickly for coating materials with low permeability. If the measurement time is too long, the measurement data will be inaccurate

Method used

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  • Device and method for measuring gas diffusion coefficient of low-strength, low-permeability coating material
  • Device and method for measuring gas diffusion coefficient of low-strength, low-permeability coating material
  • Device and method for measuring gas diffusion coefficient of low-strength, low-permeability coating material

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Embodiment Construction

[0064] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0065] The present invention is made up of the following parts: two parallel vacuum chambers---measuring chamber 1 and gas-filled chamber 7 that have measured the background air leakage rate, are separated by a vacuum chamber body utilizing a middle partition 15, and the middle partition A round hole is set on the plate as an air extraction channel and a sealing flange 14 is provided. The sealing flange 14 faces the side of the inflatable chamber 7. The flange gland 4 and the sealing ring 13 can be used to seal and fix the disc-shaped flange blind plate or The test sample 3; the inflatable chamber 7 is provided with an openable inflatable chamber door 8 for installing or removing the flange blind plate or the test sample 3; the inflatable chamber 7 is equipped with an inflatable chamber pressure gauge 5 and a pressure regulating control valve ...

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Abstract

The invention provides an apparatus and a method for determining gas diffusion coefficient of a low-intensity low-permeability coating material, which relates to the coating material coefficient determination apparatus and the method thereof. The apparatus comprises two paralleled vacuum chambers of a measuring chamber and an aeration chamber which are connected through an air exhaust channel with a seal flange, the seal flange faces to one side of the aeration chamber, a disk shaped blank flange or a test sample is fixed in a sealing mode by using a flange gland and a sealing ring; an operable aeration chamber door is arranged in the aeration chamber, which is used for arranging or dismounting the blank flange or the test sample; an aeration chamber pressure gauge, an aeration pipeline having a pressure adjusting control valve and an air exhaust pipeline having an aeration chamber valve are arranged in the aeration chamber; the measuring chamber pressure gauge and the air exhaust pipeline having a measuring chamber valve are arranged in the measuring chamber, and the background leakage rate of the measuring chamber is relatively stationary. The apparatus can use a thin coating material for measurement, for the low-permeability coating material, data for stabilization of gas pressure and gas flux can be rapidly acquired, and the measurement result is accurate.

Description

technical field [0001] The invention relates to a solid coating measurement device and method, in particular to a low-strength, low-permeability coating material gas diffusion coefficient measurement device and method. Background technique [0002] At present, the gas chamber method and the mass method are mainly used to measure the gas mass transfer diffusion coefficient in solid materials. The gas chamber method is to place the measured material in the middle of two chambers or the outlet of a single chamber, and calculate the mass transfer characteristic parameters of the material by monitoring the concentration change of the target gas on both sides of the material or detecting the concentration of the target gas in the equilibrium state. If two static chambers are used, the calculation results are uncertain, so in order to ensure the accuracy of the measurement data, the dynamic chamber method is generally used. This method requires a large pressure difference on both ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
CPCG01N13/00G01N2013/003
Inventor 刘军赵丽丽李洪仁张世伟丁济琳
Owner 辽宁博仕创业服务中心管理有限公司
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