scholarly journals Comparison of the protection effectiveness of acrylic polyurethane coatings containing bark extracts on three heat-treated North American wood species: Surface degradation

2012 ◽  
Vol 258 (13) ◽  
pp. 5283-5290 ◽  
Author(s):  
Duygu Kocaefe ◽  
Sudeshna Saha
Keyword(s):  
Wood Species ◽  
North American ◽  
Surface Degradation ◽  
Polyurethane Coatings ◽  
Heat Treated ◽  
Acrylic Polyurethane

Boreal forest conifer extracts: potential natural additives for acrylic polyurethane coatings for the protection of heat-treated jack pine

2012 ◽  
Vol 10 (1) ◽  
pp. 109-122 ◽  
Author(s):  
Sudeshna Saha ◽  
Duygu Kocaefe ◽  
Yaman Boluk ◽  
Vakhtang Mshvildadze ◽  
Jean Legault ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Jack Pine ◽  
Polyurethane Coatings ◽  
Heat Treated ◽  
Acrylic Polyurethane ◽  
Natural Additives

scholarly journals Heat-Treated Wood as a Substrate for Coatings, Weathering of Heat-Treated Wood, and Coating Performance on Heat-Treated Wood

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Vlatka Jirouš-Rajković ◽  
Josip Miklečić
Keyword(s):  
Heat Treatment ◽  
Wood Species ◽  
Treated Wood ◽  
Wood Properties ◽  
Treatment Method ◽  
Coating Performance ◽  
Treatment Processes ◽  
Treatment Conditions ◽  
Heat Treated ◽  
Trade Names

Heat treatment is a method of wood modification with increasing market acceptance in Europe. The major patented European commercial heat treatment processes have trade names ThermoWood, Platowood, Retiwood, Le Bois Perdure, and Oil-Heat-Treated Wood (OHT). To what extent modification of wood affects the resistance of wood to weathering is also an important aspect for wood applications, especially where appearance is important. Unfortunately, heat-treated wood has poor resistance to weathering, and surface treatment with coatings is required for both protection and aesthetic reasons. As a substrate for coating, heat-treated wood has altered characteristics such as lower hygroscopicity and liquid water uptake and changed acidity, wettability, surface free energy, and anatomical microstructure. Various wood species, heat treatment method, treatment intensity, and treatment conditions exhibited a different extent of changes in wood properties. These altered properties could affect coating performance on heat-treated wood. The reported changes in acidity and in surface energy due to heat treatments are inconsistent with one another depending on wood species and temperature of the treatments. This paper gives an overview of the research results with regards to properties of heat-treated wood that can affect coating performance and weathering of uncoated and coated heat-treated wood.

Effects of fluorine and silicon components on the hydrophobicity failure behavior of acrylic polyurethane coatings

2017 ◽  
Vol 14 (3) ◽  
pp. 691-699 ◽  
Author(s):  
Fei Yang ◽  
Liqun Zhu ◽  
Dongxiao Han ◽  
Weiping Li ◽  
Yichi Chen ◽  
...  
Keyword(s):  
Failure Behavior ◽  
Polyurethane Coatings ◽  
Acrylic Polyurethane

An evaluation of properties of four heat treated wood species

2014 ◽  
Vol 60 ◽  
pp. 60-65 ◽  
Author(s):  
Haci Ismail Kesik ◽  
Suleyman Korkut ◽  
Salim Hiziroglu ◽  
Hakan Sevik
Keyword(s):  
Wood Species ◽  
Treated Wood ◽  
Heat Treated

Correlation between the surface aging of acrylic polyurethane coatings and environmental factors

2019 ◽  
Vol 132 ◽  
pp. 362-369 ◽  
Author(s):  
Jin Gao ◽  
Chao Li ◽  
Zhen Lv ◽  
Rui Wang ◽  
Dequan Wu ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Polyurethane Coatings ◽  
Acrylic Polyurethane

scholarly journals Coating Performance on Exterior Oil-Heat Treated Wood

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 225 ◽  
Author(s):  
Mojgan Nejad ◽  
Mahdi Dadbin ◽  
Paul Cooper
Keyword(s):  
Moisture Content ◽  
Wood Species ◽  
Color Change ◽  
Treated Wood ◽  
Untreated Wood ◽  
Average Moisture Content ◽  
Southern Pine ◽  
Coating Performance ◽  
Spruce Wood ◽  
Heat Treated

Thermal modification and the degree of improved properties from the treatment depend on wood species and treatment parameters. Southern yellow pine and spruce are two wood species commonly used for decking, fences, and siding in North America. This study evaluated coating performance when applied on oil-heat-treated Southern pine and spruce wood samples. Moisture content, color, and gloss changes of samples were analyzed before weathering and then after each month for the first three months and then every six months during 18 months of natural weathering exposure in Toronto, Canada. The results showed that coated heat-treated woods had lower moisture uptake, lower color change, and overall better appearance ranking than coated-untreated wood samples. Coated-spruce wood samples had lower checking and splitting, and in general, much better performance than coated-Southern pine treated samples. Notably, the average moisture content of treated spruce wood samples was significantly lower than that of Southern pine, which explains lower checking and improved coatings’ appearance.

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