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Effectiveness of Two Different Hydrophobic Topcoats for Increasing of Durability of Exterior Coating Systems on Oak Wood

Department of Wood Processing and Biomaterials, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences in Prague, Kamýcká 129, 165 00 Prague, Czech Republic
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Coatings 2019, 9(5), 280; https://doi.org/10.3390/coatings9050280
Received: 6 April 2019 / Revised: 24 April 2019 / Accepted: 24 April 2019 / Published: 26 April 2019
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Abstract

A top hydrophobic layer can increase the durability of exterior coatings applied on wood. Two hydrophobic topcoats - synthetics and waterborne acrylate resin with wax additives, were tested as top layers on twenty-four different coating systems applied on oak wood in this experiment. Artificial accelerated weathering lasted for six weeks. Changes of color, gloss, surface wetting were evaluated, and microscopic analyses of coated surfaces were done during weathering. The results have shown that a top hydrophobic layer increases the durability of tested coating systems in most cases. However, the effectiveness of the two tested hydrophobic topcoats turned out to be different depending on the specific coating systems used. View Full-Text
Keywords: artificial weathering; durability; exterior coatings; hydrophobic topcoat; oak wood artificial weathering; durability; exterior coatings; hydrophobic topcoat; oak wood
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Pánek, M.; Dvořák, O.; Oberhofnerová, E.; Šimůnková, K.; Zeidler, A. Effectiveness of Two Different Hydrophobic Topcoats for Increasing of Durability of Exterior Coating Systems on Oak Wood. Coatings 2019, 9, 280.

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