Optimum preparation and thermal conductivity of novel glossy paint prepared from waste of palm oil fly ash composite

Abstract

The optimum preparation and the thermal conductivity of environmental-friendly glossy paint that was prepared from the waste of Palm Oil Fly Ash (POFA) were investigated. For optimum pigment preparations, the aqueous precursor of 45 % wt POFA mixed with 25% wt sulphur, 20% wt calcium and 10% wt fine graphite was sintered at 900oC to produce a complete crystalline product. The sintered product was milled to become a grayish fine powder pigment. From the SEM images, the grain size was approximately 0.404 μm. The pigments were mixed with a binder, solvent and additives and grinded to become a paint and was then tested (Glossy test, hardness test, adhesion test and thermal conductivity test). From the results, the optimum compositions of a paint are 22% wt POFA pigment, 29% wt alkyd binder, 39% wt polyurethane thinner and 10% wt mix additives (cobalt 10%, lead 32% and N.C Solution). It was also discovered that the paint is a good insulator with thermal conductivity of approximately 78.95 Wm-2