EVOLUTION OF INTERNAL-STRESSES IN COATINGS ON THE BASE OF ORGANOTIN POLYMERS

The internal stresses in organotin polymer coatings of the 1-120 mcm thickness on steel have been studied. The film prepared from concentrated solutions (positive values of internal stresses) is shown to consist of coils (coils agglomerates) of macromolecules and of packs when preparing from dilute solutions (negative values of internal stresses). Macrostructure of films depends on their porosity and existence of large (approximately 0.1 mcm) structural formations. The models of observed phenomena are proposed.