The aim of this study was to improve the ability of an aqueous acrylic wood coating to reduce water uptake and to provide good hydrothermal stability of the wood-coating interface by incorporating organofunctional alkoxysilanes into the coating.Of the various hydrophobic and hydrophilic alkoxysilanes and their blends investigated,the best results were obtained with coatings containing hydrophobic organosilanes.Acrylic coatings containing 10-15% of bifunctional alkoxysilane reduced water uptake by approximately 50% and 80% relative to pure acrylic coating and uncoated wood,respectively,and provided durable coating adhesion when surface-coated wood specimens were subjected to water immersion or harsh cyclic soaking and drying tests.
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