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Pore structure characteristic parameters of metal rubber material
GUO Ya-dong1, ZHAO Hui2, FU Cui-ting1, LIU Guo-rong1, ZHOU Bin1
(1.College of Chemical Engineering in China University of Petroleum, Qingdao 266580, China;2.PetroChina Karamay Petrochemical Company Design Institute, Karamay 834000, China)
Abstract:
According to a reasonable simplification of microscopic pore structure, the metal rubber pore structure parameters including material porosity, specific surface area, average pore diameter and the maximum pore size were systematically studied by combining theoretical analysis with experimental verification based on capillary model and relevant hydrodynamic equations. The theoretical formulas of the parameters were deduced and verified by mercury experiments. The results indicate that the specific surface area of metal rubber relates to porosity and thread diameter. It linearly decreases with the porosity increasing, and has an inverse relationship with thread diameter. The average pore size is a function of porosity and thread diameter. It increases with the porosity increasing, and has an increasing linear relationship with thread diameter. The maximum pore size nonlinearly increases with the porosity increasing and also linearly increases with the thread diameter increasing, but has nothing to do with the thickness of the material.
Key words:  metal rubber  pore structure  porosity  specific surface area  average pore size  maximum pore size