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The breathability of permeable membranes is one of its key technical properties. Permeable membranes, especially waterproof and breathable membranes, need to have good waterproof performance, and should also have high water vapor permeability. This design allows moisture to be effectively blocked from the outside and water vapor to be discharged in a timely manner. This property is essential in a variety of applications, especially in areas such as building structures and hygiene products.
Permeable membrane gas permeability meter is commonly used to detect permeable membrane permeability testing equipment, the following from the introduction, characteristics, testing principles and other aspects of the detailed introduction.
Based on the test principle of differential pressure method, the permeable membrane gas permeability meter is a professional gas permeability tester for permeable membranes, which is suitable for the determination of gas permeability and gas permeability coefficient of permeable membranes at various temperatures.
The test principle of permeable membrane gas permeability meter is that the instrument adopts the test principle of differential pressure method, and the pre-treated sample is placed between the upper and lower test chambers and clamped. First, the low-pressure chamber (lower chamber) is vacuumed, and then the entire system is evacuated; When the specified vacuum degree is reached, the lower chamber of the test is closed, and the high-pressure chamber (upper chamber) is filled with a certain pressure of test gas, and a constant pressure difference (adjustable) is ensured on both sides of the sample; In this way, the gas will penetrate from the high-pressure side to the low-pressure side under the action of the differential pressure gradient, and the internal pressure of the low-pressure side will be monitored and processed to obtain the various barrier parameters of the tested sample.
Application of Permeable Membrane Gas Permeameter:
The gas permeability of packaging materials has a significant impact on the preservation and shelf life of products. By using a gas permeability tester, the gas permeability performance of packaging materials can be measured quickly and accurately, providing a scientific basis for the packaging and preservation of products.
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