NOVEL HIGH SOLIDS SYSTEMS BASED ON SILICONE-EPOXY RESINS

摘要

Silicone-Epoxy coatings are of increasing interest for the industrial, marine, and industrial maintenance markets due to their potential widespread applications. The epoxy component in the resin matrix offers the advantages of mechanical toughness and adhesion while the silicone component provides the coating with its hardness and UV stability properties. This paper will present an overview of the development of the silicone-epoxy systems which offer an environmentally friendly alternative to existing anti-corrosion coatings. In this study, novel coatings technology has been formulated on the basis of silicone-epoxy systems combining outstanding weathering resistance with excellent chemical resistance in a two-pack system. The use of silicone-epoxy resins enables formulation of isocyanate-free coatings with a VOC content below 100 g/L. The anticorrosive, mechanical and weathering properties of the primers and top-coat systems have been studied and compared to the current commercial systems using testing aspects like adhesion to steel substrates, flexibility and hardness, UV resistance, and improved anticorrosive properties.