Performance Characterization of Coatings on Treated-wood


Journal: Vol.6, No.1, Winter 2013 - Article 7   Pages :   Until 



Article Code:
PCCC-21-09-2012-205

Authors:
Mojgan Nejad: University of Toronto -
Paul Cooper: University of Toronto -


Article's abstract:

Coating performance is greatly influenced by the properties of the wood substrate. This study was focused on evaluating the performance of coatings on both preservative- and thermally-treated wood. A number of commercially formulated semi-transparent stains Alkyd, Alkyd-Acrylic and PU were applied on four different types of preservative treated and heat-treated wood and their performances were evaluated in natural weathering exposure in Toronto, Canada. The results showed treatments enhanced the performance of the coatings. This enhancement occurred by reducing the water uptake in the case of thermal treatment and preservative treatment with chromated copper arsenate CCA. Even though wood treated with Cu amine-based preservatives had a higher water uptake than untreated wood; the erosion and color change of coating on Cu-amine treated wood was significantly lower than on untreated wood. There were some water-based formulations that had overall better performance than solvent-based coatings on thermally treated wood


Keywords:
Wood coating, Heat-treated wood, Preservative treated wood

References:
1. S. Lebow, S. Groenier, Preservative treated wood and alternative products in the forest service, in United Sattes Department of Agriculture, U. F. Service, Editor 2006, USDA Forest Service: Missoula, MT.#2. B. M. Esteves, H. M. Pereira, Wood modification by heat treatment: A review, Bioresour., 4(2009), 370-404.#3. F. W. Calonego, E. T. D. Severo, E. L. Furtado, Decay resistance of thermally-modified Eucalyptus grandis wood at 140°C, 160°C, 180°C, 200°C and 220°C, Bioresour. Technol., 101(2010), 9391-9394.#4. J. Y. Wang, P. A. Cooper, Effect of oil type, temperature and time on moisture properties of hot oil-treated wood, Holz Roh Werkst., 63(2005), 417-422.#5. C. R. Welzbacher, A. O. Rapp, Determination of the water sorption properties and preliminary results from field tests above ground of thermally modified material from industrial scale processes. in the proceedings of 35th International Research Group on Wood Preservation, Ljubljana, Slovenia, (2004), IRG/WP 04- 40279.#6. S. Jämsä, P. Ahola, P. Viitaniemi, Long-term natural weathering of coated ThermoWood, Pigm. Resin Technol., 29(2000), 68-74.#7. S. Saha, D. Kocaefe, K. Sarkar, Y. Boluk, A. Pichette, Effect of TiO2-containing nano-coatings on the color protection of heat-treated jack pine, J. Coat. Technol. Res., 8(2011), 183-190.#8. M. Nejad, P. Cooper, Exterior wood coatings, Part-1: Performance of semitransparent stains on preservative treated wood, J. Coat. Technol. Res., 8(2011), 449-458.#9. M. Nejad, P. Cooper, Exterior wood coatings, Part 2: Modeling correlation between coating properties and their weathering performance, J. Coat. Technol. Res., 8(2011), 459-467.#10. W. C. Feist, Exterior wood finishes in coatings technology handbook, A. Tracton, Editor. 2006, Talyor and Francis Group: New York. p. 12.


Article's file
Page view: 2823
Article's download quantity : 565


Article System Login
Introduction

Manager-in-Chief:
Prof. Zahra Ranjbar
Editor-in-Chief:
Dr. Farahnaz Nourmohammadian
Assistant Editor:
Dr. Mozhgan Hosseinnezhad
ISSN:
2008-2134
ISSN (online):
2383-1790
Publisher:
Institute for Color Science and Technology (ICST)

Quick Access
Publications
E-Vote
What is your opinion about the manuscript subscription system of PCCC website?
Excellent
Good
Fair
Poor
Website Statistics
Page view:2,824
Online Visitors:31