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WATER PERMEABILITY OF EXTERIOR WOOD coatingS: WATERBORNE ACRYLATE DISPERSIONS FOR WINDOWS

Journal of Green Building 2018年第3期13卷 3-16页

作者： Štěpán Hýsek Hakan Fidan MilošPánek Martin Böhm Kamil Trgala Department of Wood Products and Wood Constructions Faculty of Forestry and Wood SciencesCzech University of Life Sciences PragueKamýcká12916500 Prague 6-SuchdolCzech Republic Department of Wood Chemistry and Wood Products Duzce UniversityKonuralp YerleşkesiKonuralp81620 DüzceTurkey

Permeability of coatings for water and water vapor is an important factor in their wood protective *** this study,the permeability of coatings in terms of liquid water and water vapor absorption and desorption was measured based on different parts of the standard EN *** study evaluated the permeability of commercial coating systems and ascertained effects of coating layering on the coating *** this measurement,six different waterborne acrylate dispersions were used as paint on spruce test *** results clearly revealed that liquid water and water vapor uptake were affected by coating film thickness,number of coats,and coating composition(producer).It was ascertained that the type of coating pigmentation affected water absorption of coatings and that with a constant coating film thickness,the number of coats affected water vapor absorption and desorption,but not water ***,it was observed that the number of coats affected the cor-relation between the coating film thickness and water vapor absorption and *** values for water vapor absorption were much higher than for liquid water absorption and,unlike the water vapor absorption rate,the water vapor desorption rate was approximately 50%lower.

关键词： wood waterborne acrylates exterior coatings permeability non-destructive coating thickness measurement

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