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.
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[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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