A portable device for high-quality express measurement of vapor permeability of film materials has been developed. The paper describes in detail the design and electrical features of the device, as well as a universal method of qualitative measurement of vapor permeability. The functional of the cell is shown by the example of HDPE films deformed in supercritical carbon dioxide (SC-CO2) to various tensile strain. The article presents a number of direct experimental data (relative humidity in RH%, temperature in Celsius degrees), as well as the result of renormalization of relative humidity into absolute humidity units (vapor pressure/density) for use as a quantitative characteristic.


Разработка: студия Green Art