Mechanical Properties of Impregnated and Heat Treated Oriental Beech Wood

Türkoğlu, Türkay; Baysal, Ergun; Yüksel, Mehmet; Peker, Hüseyin; Saçli, Cevdet; Küreli, İhsan; Toker, Hilmi

doi:10.15376/biores.11.4.8285-8296

Cited by 15 publications

(11 citation statements)

References 29 publications

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“…Some researchers have reported an increase in gloss values on wood surfaces exposed to artificial weathering under controlled exposure conditions [ 109 ]. Other studies have reported a reduction in glossiness of wood surfaces [ [110] , [111] , [112] ]. The removal of early wood tracheids results in elevated microroughness, while the exposed middle lamellae surfaces reflect light more specularly than the cut/broken cell wall.…”

Section: Discussionmentioning

confidence: 96%

Fungal colonisation on wood surfaces weathered at diverse climatic conditions

Poohphajai

Myronycheva

Karlsson

et al. 2023

Heliyon

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Section: Discussionmentioning

confidence: 96%

Fungal colonisation on wood surfaces weathered at diverse climatic conditions

Poohphajai

Myronycheva

Karlsson

et al. 2023

Heliyon

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“…However, there are also some studies [ 15 ] that first heat-treated wood and then impregnated it, and they all used medium-temperature heat-treated wood to improve the physical and mechanical properties. In addition, some studies are also devoted to the functional modification of wood, and the combination of dipping and heat treatment is used to enhance the antibacterial properties of wood [ 16 ], anticorrosion [ 17 ], and flame retardancy [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

Xue

Zhou

et al. 2022

Materials

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To expand the application range of fast-growing poplar, a modification method of poplar impregnated with nano-SiO2 and urea-formaldehyde resin was proposed in this study. Taking the mass ratio of nano-SiO2 mass to the solid content of urea-formaldehyde resin impregnation solution (W), high-temperature (H), and high-temperature time (T) as influencing factors, the effects of impregnation high-temperature heat treatment modification on the physical and mechanical properties of fast-growing poplar were explored. At the same time, the weight loss rate, oven-dry density, dry shrinkage properties, swelling properties, modulus of rupture (MOR), and modulus of elasticity (MOE) of the modified poplar were measured. The research results show that both the weight loss rate and the coefficient of variation of the oven-dry density have a high correlation with the temperature; the high-temperature immersion heat treatment can reduce the dry shrinkage and swelling of poplar, improve the dimensional stability, MOR, and MOE. W is 0–1%, H is 160 °C, and T is 2–4 h. The impregnated heat-treated wood has good MOR and MOE. Therefore, the combination of nano-SiO2 and urea-formaldehyde resin impregnation and heat treatment to modify poplar can improve some physical and mechanical properties of fast-growing poplar, expand the use of poplar, increase its added value, and realize high-value utilization.

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“…Ce test a l'avantage d'être accéléré par rapport au vieillissement naturel [10][11], qui dure un an et qui présente souvent des problèmes de répétabilité et de reproductibilité.…”

Section: Introductionunclassified

Effect of artificial aging at QUV on the color of finish treated woods of Pinus sylvestris and Quercus robur

et al. 2018

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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.

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Mechanical Properties of Impregnated and Heat Treated Oriental Beech Wood

Cited by 15 publications

References 29 publications

Fungal colonisation on wood surfaces weathered at diverse climatic conditions

Fungal colonisation on wood surfaces weathered at diverse climatic conditions

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

Effect of artificial aging at QUV on the color of finish treated woods of Pinus sylvestris and Quercus robur

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