METHOD OF PREPARING POLYMER ANTIFRICTION COATING Russian patent published in 2010 - IPC C09D127/12 

FIELD: chemistry.

SUBSTANCE: polymer antifriction coatings are deposited on solid surfaces made from metal, ceramics and polymer materials in order to reduce coefficient of friction and wearing of contact surfaces in mechanical engineering, aircraft construction, shipbuilding and in petrochemical and gas industry. Preparation of the coating involves treatment of the surface of an article with a cleaning agent, drying, heating the surface to temperature higher that boiling point of epilam, application of a solution of an organofluorine surfactant (fluoro surfactant), perfluropolyoxyalkylene or perfluorinated polyalkylene oxide compound onto the surface of epilam. The fluoro surfactant solution is applied using a gas stream which is directed and curled around a longitudinal axis, where the said gas stream is fed at 30-300 g/s while epilam flows at 5-15 g/s. The gas is selected from a group which includes air, nitrogen and inert gas. The coating then undergoes thermofixation. Epilam is fed into the gas stream using an ejector. The gas stream curled around the longitudinal axis is created using a screw and the directed gas stream is obtained using a supersonic nozzle.

EFFECT: antifriction polymer coatings with good tribotechnical properties on the surface of large articles.

4 cl, 4 tbl, 3 dwg, 6 ex