Quality control and detection of polymer gas separation membrane

Abstract: the ideal polymer gas separation membrane material should have high permeability and good permeability selectivity, high mechanical strength, excellent thermal and chemical stability and excellent film forming processing performance In the above requirements, the permeability of polymer gas separation membrane to separate gas components is the key index for technical development and research of manufacturers Key words: quality control and detection of polymer gas separation membrane, polymer gas membrane separation, gas transmittance, membrane separation test analyzer text: Gas membrane separation technology is a new separation technology Compared with the traditional separation technology, it has the characteristics of less investment, simple equipment, low energy consumption, easy to use, easy to operate, safe and pollution-free Therefore, in recent years, it has been widely used in food, medicine and health, petrochemical, biotechnology, environmental engineering and other industries, and has received high attention from all aspects Polymer gas separation membrane material is one of the key problems in the development of membrane separation technology The ideal polymer gas separation membrane material should have high permeability, good permeability selectivity, high mechanical strength, excellent thermal and chemical stability, and excellent film-forming processing performance In the above requirements, the gas permeability of each component of the polymer gas separation membrane is the key index of technical development and research of each manufacturer Labthink blue light then combined with G2 / 110x membrane separation test analyzer, a brief introduction is made to the gas permeability test of gas components separated by polymer gas separation membrane 1、 Separation principle of polymer gas separation membrane Gas membrane separation technology is to use different gases in the mixed gas of raw materials to have different permeability for the polymer gas separation membrane material itself With the pressure difference between the two sides of the polymer gas separation membrane as the driving force, the gas enriched material with high permeability is obtained on the permeation side, and the gas enriched by the non permeable gas is obtained on the permeation side, so as to achieve gas separation Objective 2、 Test principle of G2 / 110x membrane separation test analyzer Under the specified temperature conditions, the permeation chamber is separated by the sample of polymer gas separation membrane One side is mixed gas with certain pressure, and the other side is vacuumized Thus, a certain pressure difference of mixed gas is formed on both sides of the sample of polymer gas separation membrane, and the gas will pass through the membrane and enter the low pressure side; then it will be carried by the carrier gas into the separation chamber, and it will be carried by FID hydrogen flame ion Chemical detector is used to determine the content of each gas in carrier gas, and then calculate the amount of each gas passing through the sample per unit area in unit time
The G2 / 110x membrane separation test analyzer of Labthink blue light is the world's first test instrument applied to the permeability test of gas components in polymer gas separation membrane separation It adopts the embedded computer system platform, with excellent options and stable and reliable performance It uses the principle of differential pressure test and chromatographic analysis technology to realize the permeability and selection of single and mixed test gas components It can be used for qualitative and quantitative determination of selectivity, permeability rate, and bidirectional temperature control of heating and cooling, which can test the performance of separation membrane at any temperature within the range, and meet the research needs of research institutions and colleges for analysis and improvement of the barrier performance of polymer gas separation membrane materials Of course, to ensure that the polymer gas separation membrane to separate the gas components of the gas permeability index qualified, but also need to control some other indicators to ensure the quality of its products For more information about testing instruments, please call: for information.