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A. Szalińska

Use of adhesion promotors in epoxy paints

Polimery 1993, No 4-5, 205

DOI: dx.doi.org/10.14314/polimery.1993.205


Organic epoxy coatings of the high—solids type were investigated. To improve their adhesion to steel the following three organosilicon compounds were used: y- minopropyltriethoxysilane, 3-glycidyloxypropyltrimethoxysilane and N-aminoethyl-3-aminopropyldimethoxysiIane. Silanes were added to paints in an amount of 1—2 mass-% per epoxy resin. The effect of silanes on the adhesive strength under conditions of a possible reduction of adhesion due to water penetration across coating (e.g. during immersion in water or keeping in a salt chamber) was investigated. It was found that the first and the second silane imparted the highest regenerated adhesive strength and a relatively high wet adhesive strength. T ese silanes also contributed to an improvement in the wear resistance, impact resistance and resistance to the action of aggressive media (such as salt, fog and solutions of sodium chloride, acids, and alkalis).

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