Abstract
The influence of prepolymer (urethane acrylate or polyesteracrylate) type, triacrylate (trimethyolpropane triactylate or ethoxylated trimethylolpropane triacrylate) type and the concentration of silicone acrylate on the surface properties of UV cured films was studied. The effect of these variables on the pencil hardness and gloss was determined by using a full factorial experimental design. The results showed that the prepolymer type and the concentration of silicone acrylate were the most significant factors affecting surface hardness and gloss of UV cured films, respectively. Specifically, the coating formulation with polyester prepolymer resulted in improved surface hardness of the UV cured film, while increasing the concentration of the silicone acrylate significantly decreased the gloss. In addition, the predictive mathematical models obtained through analysis of variance provide a reasonable approximation of actual experimental measurements.
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