About the article
A.N. BOLOTOV, Dr. Sc., G.B. BURDO, Dr. Sc.
Magnetofluidic seals for sealing gas media have found wide application in various industries due to their undeniable advantages. Nevertheless, such seals are not yet able to reliably seal liquid media with different polarities. The paper analyzes the physico-chemical processes that lead to the destruction of the magnetic fluid in the seal under the influence of the liquid medium in contact with it. The results of experimental studies of the sealing process based on the use of magnetic liquids based on siloxanes and triethanolamine, as well as non-magnetic liquids with different polarities are presented. It is concluded that for sealing polar liquid media, it seems promising to use oleophobic magnetic liquids containing a large amount of filler in the form of strong magnetic particles with a dispersion of 0.1...1 microns. It is shown that the magnetic fluid must have the smallest possible contact area with the sealed liquid and maintain the laminar flow regime.
magnetic fluid, seal, liquid medium.