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

Coatings

Kristýna Šimůnková¹  Miloš Pánek¹  Aleš Zeidler¹  Ondřej Dvořák¹  Eliška Oberhofnerová¹ 

[1] 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;

关键词: artificial weathering;    durability;    exterior coatings;    hydrophobic topcoat;    oak wood;   

DOI  :  10.3390/coatings9050280

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown