Vapour diffusion coefficient testing method and vapour diffusion coefficient testing device

A water vapor diffusion and testing device technology, which is applied in the electronic field, can solve problems such as low efficiency, large deviation, and long time consumption, and achieve the effects of reducing computational complexity, maintaining stable boundary conditions, and improving accuracy

Inactive Publication Date: 2017-07-21
ENN ENERGY SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides a water vapor diffusion coefficient testing method and a water vapor diffusivity testing device, which are used to solve the problems in the prior art that the test bench for testing the water vapor diffusion coefficient usually uses a steady-state test, and the testing process takes a long time and has low efficiency. , the technical problem that the test results of the non-steady-state test method deviate greatly from the actual value of the water vapor diffusion coefficient

Method used

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  • Vapour diffusion coefficient testing method and vapour diffusion coefficient testing device
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  • Vapour diffusion coefficient testing method and vapour diffusion coefficient testing device

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Embodiment 1

[0051] Please refer to figure 1 , Embodiment 1 of the present application provides a water vapor diffusion coefficient testing method, comprising:

[0052] Step 101: An experimental sample is fixed in a predetermined manner on the fixed table of the water vapor diffusion coefficient testing device, and when the temperature of the experimental sample meets the preset conditions, each of the at least two test holes is obtained by a humidity tester At least two humidity parameters correspond one-to-one to at least two test points within at least two different moments.

[0053] Step 102: using the processing device based on the distance between the test points in each of the at least two test holes relative to the first humidity surface, the at least two different times, and the each The at least two humidity parameters of the test points in the test holes are used to determine the water vapor diffusion coefficient of the experimental sample.

[0054] Wherein, the experimental s...

Embodiment 2

[0082] Please refer to figure 2 , Embodiment 2 of the present application provides a water vapor diffusion coefficient testing device, comprising:

[0083] The first environmental chamber 201, the chamber has a first humidity;

[0084] a second environmental chamber 202, adjacent to the first environmental chamber 201, having a second humidity less than the first humidity in the chamber;

[0085] The fixed stage 203 is used to fix the experimental sample between the first environmental chamber 201 and the second environmental chamber 202, wherein the experimental sample is passed through the first humidity surface oppositely arranged on the sample to be tested. and other surfaces other than the second humidity surface are evenly coated with a sealant, and at least two test holes are formed on the third surface of the sample to be tested, the inside of the test hole includes a test point, the The connection line between the test points of each test hole in at least two test ...

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Abstract

The invention discloses a vapour diffusion coefficient testing method and a vapour diffusion coefficient testing device. An experimental sample is processed and fixed through processing on a fixing table according to a predetermined method, at least two humidity parameters corresponding to at least two different moments one by one of a testing point in each of at least two testing holes is acquired through a temperature tester when the temperature of the experimental sample meets the preset condition; furthermore, the vapour diffusion coefficient of the experimental sample is determined through distance between the testing point of each of at least two testing holes and a first humidity face, at least two different moments, and at least two humidity parameters of the testing hole in every testing hole. All testing results in the technical scheme of the application are transient state result, the method and the device are few in testing time and can avoid interference factors; therefore, the method and the device can improve the testing efficiency as well as the testing result accuracy.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a water vapor diffusion coefficient test method and a water vapor diffusion coefficient test device. Background technique [0002] At present, the water vapor diffusion coefficient of porous building materials is usually calculated from the water vapor permeability coefficient combined with the isotherm moisture absorption curve, and the determination of the latter two is generally carried out by a steady-state test method. Among them, the measurement performed when water vapor is diffusing inside the material is called "transient test"; while the measurement performed when the diffusion state of water vapor is in a steady state is called "steady state test". Due to the slow transfer of water vapor in porous building materials, the traditional steady-state test method is time-consuming and inefficient. Even though the water vapor diffusion coefficient results can be obtained...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 易思阳
Owner ENN ENERGY SERVICE
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