The effect of boiling time on the surface roughness of rotary-cut veneers from oriental beech (Fagus orientalis L.)

Dündar, Türker; As, Nüsret; Korkut, Süleyman; Öner, Ünsal

doi:10.1016/j.jmatprotec.2007.07.036

Cited by 24 publications

(16 citation statements)

References 3 publications

(4 reference statements)

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“…5). Similar trend of surface roughness after thermal process was found by many researchers, however the percentage change differs and it depends on the heat treatment process, temperature and duration as well as the type of wood adherend [11,[13][14][15].…”

Section: Methodssupporting

confidence: 84%

“…performance of the wood [10,11]. Many researchers [11][12][13][14][15][16] showed that the heat treatment process alters the surface roughness and surface morphology of wood material. Aydin et al [14] examined the surface roughness characterization of spruce veneers plywood under varying temperature of 32 °C and 52 °C.…”

mentioning

confidence: 99%

“…They observed that samples under treatment at 52 °C had significantly improved surface roughness compared to the lower temperature treatment. Dundar et al [15] reported the effect of boiling time on the surface roughness on the oriental beach wood material. They concluded that with increases in boiling time suggestively, the surface roughness of the inner part of the veneer increased while surface roughness of the outer and central part of the veneer decreased.…”

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confidence: 99%

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Effects of heat treatment on the behavior of teak wood adherends bonded joints

Budhe

Ghugal²,

Barros

2020

Appl Adhes Sci

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IntroductionNowadays, scientific communities and industries are looking for alternative materials to the synthetic composites and metals, as these materials are non-degradable, limited in quantity, hazardous to nature and costly [1,2]. Hence many researchers are attracted towards natural materials (e.g. wood) for various applications, such as construction, furniture, decorative products, sports items and many others. Wood is one of the most important materials and widely used since the old era, as it is easily available, ecofriendly, light weight and low cost among many more benefits compared to others [3,4]. However, the hygroscopicity of wood is the major disadvantage which limits the usage of wood for many applications. There are different processes by which the hygroscopicity of wood can be reduced and many studies have been carried out in the literature on different processes [5,6].Heat treatment is the oldest and simplest method by which wood hygroscopicity can be effectively decreased. In addition, the dimensional stability, biological resistance and durability of the wood can also be improved [7][8][9]. It was showed that the heat treatment of wood not only reduced the hygroscopicity but also caused physical changes in the wood such as surface modification, which can significantly affect the adhesive bond AbstractThe main aim of this work is to investigate the effect of heat treatment on the teak wood adherend bonded joints. Indian teak wood samples were kept in an oven at 150 °C for 2 h for the heat treatment process. The surface roughness values of the wood adherend before and after the heat treatment process were measured using a surface profilometer. Wettability of un-treated and heat-treated teak wood samples was determined with the contact angle measurements by using the sessile drop method. Single strap joints with un-treated and heat treated wood specimens were tested at ambient temperature. The results show that, there is a clear dependency observed in between the heat treatment and the surface roughness of the wood adherends. Wettability of teak wood adherend surface is degraded after the heat treatment process. An adverse effect of heat treatment of wood adherend on the bonding strength was observed, but the surface roughness was improved.

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Section: Methodssupporting

confidence: 84%

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confidence: 99%

mentioning

confidence: 99%

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Effects of heat treatment on the behavior of teak wood adherends bonded joints

Budhe

Ghugal²,

Barros

2020

Appl Adhes Sci

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“…(Korkut et al 2009). Also, the wooden materials with rough surface require much more sanding process compared to one with smooth surface, which leads to decrease in thickness of material and, therefore, increases the losses due to the sanding process (Dundar et al 2008). However, wood is a heterogeneous, anisotropic and brittle material.…”

Section: Surface Roughnessmentioning

confidence: 99%

Some Physical characteristics of thermally modified oriental- beech wood

Baysal

Kart

Toker

et al. 2014

Maderas, Cienc. tecnol.

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Heat treatment of Oriental-beech (Fagus orientalis) wood was carried out by hot air in an oven for 2, 4, and 8 h at 140, 170, and 200°C. After heat treatment, some physical characteristics such as surface roughness, color, glossiness, and mass loss of Oriental-beech wood specimens were measured.Our results showed that heat treatment caused decrease in surface roughness, glossiness, and mass loss values of Oriental-beech (Fagus orientalis) wood specimens. The decrease in lightness at all temperatures indicates that the specimens become darker with the treatment time. While, a* coordinate (red component) decreased as temperature increased, b* coordinate (yellow component) initially increased at 140°C and then decreased at 170°C and 200°C.

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“…Results showed that the surface roughness values of the untreated (control) group were higher than the other all treatment groups before the weathering. The wooden materials with rough surface require much more sanding process compared to one with a smooth surface, which leads to decrease in thickness of the material and, therefore, increases the losses due to the sanding process (Dundar et al 2008). However, the roughness of wood is a complex phenomenon.…”

Section: Surface Roughness Changesmentioning

confidence: 99%

Effects of Natural Weathering on Surface Characteristics of Scots Pine Impregnated With Wolmanit Cx-8 and Varnished

Altay¹,

Baysal²,

Toker³

et al. 2020

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In this study, it was aimed to investigate the effects of weathering on some surface characteristics such as color and surface roughness changes of Scots pine impregnated with copper-containing chemical such as Wolmanit CX-8 (WCX-8) and varnished with synthetic varnish (SV), cellulosic varnish (CV), and polyurethane varnish (PV) were investigated. Results showed that while the WCX-8 impregnated and PV coated Scots pine specimens showed better color stability than other treatment groups after weathering, only CV coated Scots pine gave the most negative effect on color stability. While, the untreated (control) wood surface turned from red to green and yellow to blue respectively, after weathering, other all treatment groups gave reddish and yellowish tone after weathering. Weathering conditions increased the surface roughness of control (untreated) and other all treatment groups. The control group gave a rougher surface than other treatment groups after weathering. Surface roughness increases were the lower for CV coated Scots pine wood than other treatment groups. The results showed that while WCX-8 impregnation before varnishing gave better color characteristics, generally it caused to increase the surface roughness of Scots pine after weathering.

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The effect of boiling time on the surface roughness of rotary-cut veneers from oriental beech (Fagus orientalis L.)

Cited by 24 publications

References 3 publications

Effects of heat treatment on the behavior of teak wood adherends bonded joints

Effects of heat treatment on the behavior of teak wood adherends bonded joints

Some Physical characteristics of thermally modified oriental- beech wood

Effects of Natural Weathering on Surface Characteristics of Scots Pine Impregnated With Wolmanit Cx-8 and Varnished

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