Effect of resin cleaning process on adhesion strength of water-based varnishes

Budakçı, Mehmet; Saygin, Emre; Şenol, Süleyman

doi:10.15376/biores.14.1.1317-1332

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…The increase in the layer thickness of polymer-based varnishes has been stated to have an impact on increasing the surface adhesion resistance (Budakci, 1997), and that the roughness, gloss and surface adhesion resistance of various kinds of water-based varnishes, which are applied with varied methods on different types of wood, have lower values than solvent-based varnishes (Yakın, 2001).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the Mechanical Densification Process in Wood Material on the Surface Adhesion Resistance of Varnishes

Atilgan,

Burdurlu²,

Atar²

et al. 2024

Preprint

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This research was carried out to find out the impact the mechanical densifying process has on wood material on the varnish adhesion resistance to surface. To this end, the experiment samples acquired from black pine (Pinus nigra) and Uludag Fir (Abies bornmulleriana Mattf) were subjected to densification in a hydraulic press at 140°C and a rate of 25% and 50% with a direction of radial. Following the process of densification, the sanded and unsanded samples were varnished with cellulosic and polyurethane varnishes, afterwards the surface adhesion resistance of the varnishes was determined. Regarding the three-way interaction between densification ratio, surface treatment and wood type, the highest surface adhesion resistance of the varnish layer was found in black pine + unsanded surface + 25% densification (1.98), and the lowest was in Uludag Fir + unsanded surface + 50% densification (0.99). Concerning the triple interaction of varnish type, concentration ratio and surface treatment, the highest surface adhesion resistance of the varnish layer was found in the polyurethane varnish + non-densified control group + sanded surface (2.23), and the lowest was in cellulosic varnish + non-densified control group + sanded surface (1.02). Approximate values were obtained for the densification process. It can be stated that the densification process creates high adhesion values for the polyurethane varnish in the black pine wood type. The sanding process has an intensifier effect on these values, and the products which were obtained from the polyurethane varnished samples do not require sanding. Considering these situations can provide significant advantages in projects with wood materials subjected to the densification process.

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Section: Introductionmentioning

confidence: 99%

“…It has been determined that the increase in the lm layer of the varnishes (in polymer-based varnishes) is parallel with the increase in the surface adhesion resistance (Budakci, 1997). In the literature, it has been stated that adhesion in polyurethane varnish gives better results than other varnishes (Sonmez, 1988).…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Mechanical Densification Process in Wood Material on the Surface Adhesion Resistance of Varnishes

Atilgan,

Burdurlu²,

Atar²

et al. 2024

Preprint

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“…When Scots pine and chestnut tree species were used in outdoor conditions after impregnation and varnishing, higher hardness values were obtained with polyurethane varnish than with synthetic varnish in both tree species (Peker, 1997). When examining the effect of layer thickness on wood varnishes, it was seen that the third layer varnish applications caused an increase in glossiness (Budakci, 1997). It was observed that the glossiness of waterbased varnishes was lower than that of solvent-based varnishes (Yakin, 2001).…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

The Effect of Hot and Cold Check Tests on Surface Roughness and Glossiness in Varnished Wood Material

Atilgan,

Dündar Sofuoğlu

2023

Drv. ind. (Online)

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In this study, specimens from Scots pine (Pinus sylvestris L.), Anatolian chestnut (Castanea sativa Mill.) and Eastern beech (Fagus orientalis Lipsky) tree species, prepared according to ISO 3129, were conditioned according to TS ISO 13061-1. Cellulosic varnish, water-based varnish, and glass polish varnish were applied to their surfaces in accordance with ASTM-D 3023 principles. In the study, roughness (TS 2495 EN ISO 3274 and TS EN ISO 21920-3) and gloss (according to TS EN ISO 2813) values of the samples were calculated after hot and cold check test. Varnished test specimens prepared in 100 mm × 100 mm ×10 mm dimensions were first kept in drying oven at (50±5) °C for 1 hour, then were kept in conditioning room for 1 hour, and then at (-20±2) °C for 1 hour, according to ASTM D1211-97. These processes were accepted as one cycle, and tests were continued until 15 cycles. Afterward, glossiness was measured as perpendicular and parallel to fibers at 60º with a gloss measurement device, and surface roughness values of Ra and Rz were determined with a surface roughness measuring device. According to the results obtained, Scots pine (Pinus sylvestris L.), Eastern beech (Fagus Orientalis Lipsky), and Anatolian chestnut (Castanea sativa Mill.) varnish-coated wood material surfaces all showed a decrease in gloss values after hot-cold shock effect. While an increase occurred in Rz values of roughness for all wooden surfaces, Ra values roughness increased for Scots pine and chestnut and decreased for eastern beech. Gloss and roughness values of surface-treated wood materials against changing weather conditions can determine usefulness of the surface material used. The findings obtained in this study can be useful to manufacturers who use wooden products in the design of marine vehicles and those who export furniture to countries in different climatic conditions.

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“…As a result of the research, it was stated that chestnut wood showed less color change when left outdoors than Scots pine wood and that polyurethane varnish affected the hardness of chestnut and Scots pine wood to the first degree and synthetic varnish to the second degree [18]. Budakçı (1997), after applying different varnish types to wood materials, examined the surface adhesion resistance, hardness, and gloss value of the varnish layer thickness and found that acrylic as the varnish type and oak as the wood type had the highest value in the layer thickness resulting from 3layer application in surface adhesion resistance. It was concluded that synthetic varnish had the most negligible value as varnish type, and pine and beech trees had the most negligible value as layer thickness in the 1-coat application and wood type [19].…”

mentioning

confidence: 99%

“…Budakçı (1997), after applying different varnish types to wood materials, examined the surface adhesion resistance, hardness, and gloss value of the varnish layer thickness and found that acrylic as the varnish type and oak as the wood type had the highest value in the layer thickness resulting from 3layer application in surface adhesion resistance. It was concluded that synthetic varnish had the most negligible value as varnish type, and pine and beech trees had the most negligible value as layer thickness in the 1-coat application and wood type [19].…”

mentioning

confidence: 99%

Environmentally Friendly Surface Treatment Agent Trial on Wood Material and Its Effect on Adhesion Resistance

2023

IJANSER

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Wood preservatives, widely used in the wood industry, pose a risk to human health and the environment due to their harmful chemical structure. Due to the awareness of society and environmental pressures, it is searching for natural preservatives compatible with the ecological environment. Resins, which do not contain any hardening and toxic chemicals in their components, have been preferred as surface treatment materials since ancient times due to their water-repellent properties and compatibility with wood materials. This study aimed to determine the adhesion effect of resin-based lacquer used in lacquering food packaging materials, which does not contain hardeners and harmful solvents, as a surface protector on wood materials. The study preferred three local wood species and resin lacquer (food lacquer) as surface treatment materials. In this context, samples prepared from Oriental beech (Fagus Orientalis Lipsky), Scots pine (Pinus Sylvestris L.), and Anatolian chestnut (Castanea sativa Mill.) according to ISO 3129 principles were acclimatized by TS ISO 13061-1 principles and resin lacquer was applied to the surface of the test samples by spraying method according to ASTM-D 3023 principles. After the surface treatment, the samples were cured (hardener) in an oven (fan-drying oven) at temperatures of 60, 80, and 100 °C. The samples coated with resin lacquer were measured for adhesion according to TS EN ISO 4624. The test data were subjected to statistical analysis in the MSTAT-C program. According to the results, the analysis of variance regarding the effects of wood species and temperature on the adhesion value was found to be statistically significant (α=0.05) regarding wood species and temperature changes but insignificant in terms of their interactions. In the interaction of wood species and oven temperature, the highest surface adhesion value was obtained at Oriental beech + 100 °C (2,821 N/mm²) and the lowest at Scots pine + 60 °C (2,00 N/mm²).

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Effect of resin cleaning process on adhesion strength of water-based varnishes

Cited by 4 publications

References 16 publications

The Effect of the Mechanical Densification Process in Wood Material on the Surface Adhesion Resistance of Varnishes

The Effect of the Mechanical Densification Process in Wood Material on the Surface Adhesion Resistance of Varnishes

The Effect of Hot and Cold Check Tests on Surface Roughness and Glossiness in Varnished Wood Material

Environmentally Friendly Surface Treatment Agent Trial on Wood Material and Its Effect on Adhesion Resistance

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