FIELD: chemistry.
SUBSTANCE: invention relates to formation of a surface with prolonged anti-adhesion capacity using fluoropolymer resins. Described is a method of obtaining an anti-adhesion surface on a substrate involving (a) depositing a ground coating, obtained through spray drying onto the said substrate, (b) depositing a powder coating onto the obtained ground coating layer to form a coating layer on the said ground coating layer, where the said ground coating contains tetrafluoroethylene/perfluoroolefin copolymer, where the perfluoroolefin contains 3-8 carbon atoms, and a polymer binding substance selected from a group of polyestersulphones, polyphenylenesulphides and polyarylene esterketones, and said coating contains a copolymer of tetrafluoroethylene/perfluoro(alkylvinyl ether); (c) sintering said ground coating and said coating layer to form an anti-adhesion surface. Described also is a substrate obtained using said method. The adhesion quality is determined by a peel test after boiling in water.
EFFECT: method provides excellent and longer adhesion of the coating system with the substrate.
19 cl, 8 tbl, 7 ex
