The durability of exterior finishes on wood is not assured with the systems currently used. Thus, the objective of this study was to evaluate the color change of the finishes applied to wood, the most commercialized in Morocco, in order to find the wood-finishing couple that has the best durability in outdoor use. QUV accelerated aging tests were carried out during 2016 hours, according to the standard (NF 927-6 2006), on Scots pine (Pinus sylvestris) and Pedunculate oak (Quercus robur) coated with four finishes (two polyurethane finishes F1 and F2 and two acrylic finishes F3 and F4). Colorimetric measurements in color system CIELab: Gloss (L*), green-red (a*) and blue-yellow (b*) coordinates, color saturation (C*) and tone angle (H*) were performed using an X-Rite Model SP62 spectrophotometer before and at the end of the QUV accelerated aging treatment. The results showed that QUV aging caused a decrease in the L* value and a change in the surface color of all the finishing pairs studied. For wood / finishing couples with Quercus robur as a wooden support, the couple Quercus robur / F3 has the best resistance to color change, while for couples wood / finish with Pinus sylvestris as a wooden support, the couple Pinus sylvestris / F1 has the best resistance to color change.
Abstract. The durability of exterior finishes on wood is not assured with the systems currently used. Thus, the objective of this study was to evaluate the color change of the finishes applied to wood, the most commercialized in Morocco, in order to find the wood-finishing couple that has the best durability in outdoor use. QUV accelerated aging tests were carried out during 2016 hours, according to the standard (NF 927-6 2006), on Scots pine (Pinus sylvestris) and Pedunculate oak (Quercus robur) coated with four finishes (two polyurethane finishes F 1 and F 2 and two acrylic finishes F 3 and F 4 ). Colorimetric measurements in color system CIELab: Gloss (L*), green-red (a*) and blue-yellow (b*) coordinates, color saturation (C*) and tone angle ( H*) were performed using an X-Rite Model SP62 spectrophotometer before and at the end of the QUV accelerated aging treatment. The results showed that QUV aging caused a decrease in the L* value and a change in the surface color of all the finishing pairs studied. For wood / finishing couples with Quercus robur as a wooden support, the couple Quercus robur / F3 has the best resistance to color change, while for couples wood / finish with Pinus sylvestris as a wooden support, the couple Pinus sylvestris / F1 has the best resistance to color change.Key words: Wood, finish, gloss, color, accelerated aging, QUV.Résumé. La durabilité des finitions extérieures sur le bois n'est pas assurée avec les systèmes employés actuellement. Ainsi, l'objectif de cette étude était d'évaluer le changement de couleur des finitions appliquées aux bois, les plus commercialisés au Maroc, dans le but de trouver le couple bois-finition qui présente la meilleure durabilité en utilisation extérieure. Des tests de vieillissement accéléré au QUV ont été réalisés pendant 2016 heures, selon la norme (NF 927-6 2006), sur le pin sylvestre (Pinus sylvestris) et le chêne pédonculé (Quercus robur) revêtus de quatre finitions (deux finitions polyuréthanes F1 et F2 et deux finitions acryliques F3 et F4). Les mesures colorimétriques dans le système de couleur CIELab: La brillance (L*), les coordonnées vert-rouge (a*) et bleu-jaune (b*), la saturation des couleurs (C*) et l'angle de tonalité (H*) ont été réalisées à l'aide d'un spectrophotomètre X-Rite Model SP62, avant et à la fin du traitement de vieillissement accéléré au QUV. Les résultats ont montré que le vieillissement au QUV a provoqué une diminution de la valeur de L* et une modification de la couleur de surface de tous les couples de finition étudiés. Pour les couples bois/finition avec le Quercus robur comme support en bois, le couple Quercus robur / F 3 présente la meilleure résistance au changement de couleur, alors que pour les couples bois / finition avec le Pinus sylvestris comme support en bois, le couple Pinus sylvestris / F 1 présente la meilleure résistance au changement de couleur.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.