Evaluation of Additive and Filler Effects on Water-based Traffic Nanocomposite Coatings

Document Type : Research Article

Authors

1 Color, Resin and Surface Coatings Department, Iran Polymer and Petrochemical Institute, Tehran

2 Color and Polymer research center, Amirkabir University of Technology, Tehran

/amnc.2012.2.7.1

Abstract

In this study, the effect of variation in ingredients on the performance characteristics of an acrylic waterbased traffic paint i.e. no pick-up time, viscosity and wear resistance was investigated. Various coatings formulations were prepared using various amounts of two grade of calcium carbonate (5.5 and 2.6 um in average particle size), silica nanoparticles and different additives (amine dispersing agents and thickeners). No pick-up time, solvent and wear resistance was evaluated based on ASTM D 711, ASTM D 471 and ASTM D 4060, respectively. Viscosity was determined using Brookfield viscometer and luminescence factor through Shade Reflectometer using 45/0° geometry The results implied that using amine compound additives (amine dispersing agents and thickeners), different amounts of calcium carbonates (2.6:5.5 um = 75:25 wt. %) along with silica nanoparticles (1 wt. % coatings formulation) leads to reduce no pick-up time down to 25 minutes with applicable viscosity (2300 CP), luminescence factor (over 80%) and acceptable solvent and wear resistance in the water base traffic coatings

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