Measuring device for water vapor transmission rate of back film
A technology of water vapor transmission rate and measuring device, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems that the influence of gravity cannot be ruled out, the influence of detection efficiency, and the process is not concentrated, etc., to achieve Compact structure, improved detection efficiency, beneficial to the effect of accuracy
Active Publication Date: 2021-12-10
CHANGZHOU HUITIAN NEW MATERIALS
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Problems solved by technology
It has the advantages of reasonable test method, more accurate test results, and smaller errors. However, in the process of measuring the back film, it needs to be dust-removed and dried. The test chamber is the upper and lower chambers, and the influence of gravity on the determination of water vapor transmission rate cannot be ruled out
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[0025] like Figures 1 to 6 It is a structural schematic diagram of the present invention, a device for measuring the water vapor transmission rate of the back film, comprising a cubic housing 1, and the housing 1 has at least two sets of test units 2 built in, and the test units 2 are divided into front and rear chambers, including A fixed chamber 2-1 and a movable chamber 2-2, the fixed chamber 2-1 is provided with an air inlet 9 and an air outlet 10, a weight sensor 11 is fixed at the bottom of the movable chamber 2-2, and a weight sensor 11 is fixed on the weight sensor 11 A hollow cup 13 for holding water-absorbing material 12 is provided, the movable chamber 2-2 is slidingly connected with the bottom wall of the housing 1, and the side wall of the housing 1 is fixed with a device to separate the movable chamber 2-2 from the fixed chamber 2-1. or contacting linear actuator 3, the actuator end 3-1 of the linear actuator 3 is fixedly connected to the side wall of the movabl...
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The invention relates to the technical field of water vapor transmission rate measurement, in particular to a device for measuring the water vapor transmission rate of the back film. At least two sets of test units are built in the housing. The test units include a fixed chamber and a movable chamber. Air port and air outlet, there is a weight sensor at the bottom of the movable chamber, and a hollow cup for holding water-absorbing material is arranged on the weight sensor. The feeding device is arranged directly above the boundary line between the chamber and the movable chamber, the clamping device is fixed on the feeding device, the side of the test unit is provided with a pretreatment station, the inner wall of the housing is provided with a compressed gas nozzle, and the nozzle is aligned with the The pretreatment station uses compressed air to remove impurities and water vapor on both sides of the back film to be tested, and transfers the back film to be tested to the detection station through the feeding device, which has a high degree of automation and high detection efficiency; the determination of water vapor transmission rate excludes The influence of water vapor gravity ensures the accuracy of the test.
Description
technical field [0001] The invention relates to the technical field of water vapor transmission rate measurement, in particular to a back film water vapor transmission rate measurement device. Background technique [0002] Solar cell back film is one of the key packaging materials used in solar cell modules, mainly composed of fluorine material with excellent weather resistance and PET substrate with excellent electrical insulation. Solar battery products are used in many industries due to their advantages in energy saving, environmental protection, and long service life. The service life of such products is generally designed to be more than 25 years, and the back film is the key to ensuring such a long life. Because the cell is sensitive to water vapor, the back film is used to block the atmosphere to make the core area of the cell vacuum-sealed, and the primary task of sealing is to achieve water vapor barrier, air barrier and electrical barrier, so a high-quality sola...
Claims
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IPC IPC(8): G01N15/08
CPCG01N15/0806
Inventor 石娜黄欢
Owner CHANGZHOU HUITIAN NEW MATERIALS