Gas permeability test device

Abstract

The invention discloses a gas permeability test device. The gas permeability test device comprises a vacuum pump and a permeation pool, wherein the permeation pool is divided into a test chamber and a test gas chamber; the vacuum pump is connected with the test chamber and the test gas chamber respectively through pipelines; a valve I and a valve II are respectively arranged on the pipelines through which the vacuum pump is connected with the test chamber and the test gas chamber; the test chamber is connected with a pressure sensor I; the test gas chamber is connected with a pressure sensor II; the test gas chamber is connected with the gas source of the test gas through a pipeline III; and a valve III is arranged on the pipeline III. The gas permeability test device has the advantages that the structure is simple; the gas permeability test device is reliable in use and convenient in application; the test chamber is vacuumized independently; the test sample and the test chamber are effectively sealed through the pressure difference between the test gas chamber and the test chamber; the test chamber is vacuumized completely; and the test process can be controlled completely and multi-chamber test can be controlled independently.

Description

technical field [0001] The invention relates to the technical field of barrier property detection, in particular to a gas permeability test device for detecting materials. Background technique [0002] With the continuous improvement of the level of science and technology, the production and development of packaging materials are gradually developing in the direction of lighter, thinner, more convenient and more economical. , The impact of the quality and safety of industrial products has made the importance of gas transmission rate testing increasingly prominent. At the same time, with the increasing understanding of product characteristics and the popularization and application of new packaging methods, only the oxygen transmission rate of materials is not enough to meet actual needs, so the transmission rates of other gases, such as nitrogen transmission rate and carbon dioxide transmission rate , helium gas transmission rate and other indicators are gradually increasing...

AI Technical Summary

Problems solved by technology

[0006] The present invention is to solve the problems existing in the prior art that can only meet the detection requirements of the barrier performance of general materials, the testing process cannot be fully controlled, the multi-cavity test cannot be independently controlled, the sample cannot be effectively sealed and the test chamber cannot be thoroughly controlled. The problem of vacuuming; providing a gas permeability testing device; with simple structure, reliable use, convenient application, full control of the test process, independent control of multi-chamber testing, effective control of sample sealing and thorough testing of the test chamber Advantages of vacuuming

Images