SOLVENT FREE EPOXY COATING COMPOSITION FOR INTERNAL GAS TRANSMISSION PIPELINES

摘要

PURPOSE: A solvent-free epoxy paint composition is provided to have excellent corrosion resistance, flexure resistance, abrasion resistance, water resistance, solvent resistance, and pressure resistance. CONSTITUTION: A solvent-free epoxy paint composition consists of a base material and a hardener. The base material comprises 35-50 weight% of first epoxy resin which consists of bisphenol-A type epoxy resin, 5-20 weight% of second epoxy resin which consists of phenol novolak-based epoxy resin, 2-8 weight% of bifunctional diglycidyl ether-based reactive diluent, and 30-45 weight% of extender pigment. The hardener comprises amine-based hardener resin and non-reactive diluent. The first epoxy resin has a viscosity of 11,000-14,000 at 25 C. The epoxy equivalent of the first epoxy resin is 184-194.