Development of a heat resistant UV-curable epoxy coating

Epoxy novolac resin possesses good heat resistant property as compared to other conventional epoxy resins. A thermally stable UV-curable epoxy coating has been developed by using functional amino silanes, viz., N-[3-(trimethoxysily1) propyl] ethylenediamine and a copolymer of aminopropylmethyl dimethyl siloxane in definite ratio. It has been observed that the use of silicon compounds invariably enhances the thermal stability, chemical resistance and corrosion resistance of the epoxy coating. It has also been observed that silane bearing trimethoxy group gave better adhesion properties whereas silicon gave better thermal stability.