A formulated nanoparticle dispersion increases the cross linking of waterborne protective coatings without reducing the formula shelf life. Among the cross linking-related improvements are MEK rub resistance, humidity and immersion resistance, tensile strength and blocking resistance. The findings are in accord with a non-covalent mechanism of cross linking. The cross linking occurs quickly after the coating has been applied, however, the evaluated coating formulations are typically stable in the can even under heat-ageing conditions.

Subject
Water uptake, Water, Coatings, Materials, Diffusion, Additives, Solids, Film formation, Nanoparticles, Tensile strength, Drying time, Resins, Acrylics
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2014
Association for Materials Protection and Performance (AMPP)
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