Method evaluation of porous membrane porosity measurement by gas-liquid displacement method
Porosity is an important technical parameter of porous membrane materials,which is closely related to its permeation process.The gas-liquid displacement method can be operated at room temperature and measure the through holes porosity of porous membranes,which can accurately characterize the permeability of porous membrane.The testing principle and experimental method of porous membrane porosity test by gas-liquid displacement method have been elaborated.In further,the universality of this method for different material membrane,different pore size membrane and different test liquid,method precision and method comparison have been carried out.The results show that the method is scientific in principle,simple in operation and can be operated simply and has high precision,which is a universal method suitable for the porosity testing of porous membranes of various materials,different types and different pore sizes.
NETL
NSTL
万方数据
维普
