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

IF 0.7 4区 农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD
A. Atılgan, Sait Dündar Sofuoğlu
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Abstract

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.
热检查和冷检查试验对上过清漆的木质材料表面粗糙度和光泽度的影响
在这项研究中,根据 ISO 3129 标准制备了苏格兰松树(Pinus sylvestris L.)、安纳托利亚栗树(Castanea sativa Mill.)和东方山毛榉(Fagus orientalis Lipsky)树种的标本,并根据 TS ISO 13061-1 标准对其进行了养护。根据 ASTM-D 3023 原则在其表面涂上纤维素清漆、水性清漆和玻璃抛光清漆。在研究中,经过冷热检查测试后,计算了样品的粗糙度(TS 2495 EN ISO 3274 和 TS EN ISO 21920-3)和光泽度(根据 TS EN ISO 2813)值。根据 ASTM D1211-97 标准,将制备好的尺寸为 100 mm × 100 mm × 10 mm 的上光试样先在 (50±5) ℃的烘箱中保持 1 小时,然后在调节室中保持 1 小时,再在 (-20±2) ℃的环境中保持 1 小时。这些过程被视为一个周期,测试一直持续到 15 个周期。之后,用光泽度测量仪测量与纤维垂直和平行 60º 的光泽度,并用表面粗糙度测量仪测定 Ra 和 Rz 的表面粗糙度值。结果表明,苏格兰松木(Pinus sylvestris L.)、东方榉木(Fagus Orientalis Lipsky)和安纳托利亚栗木(Castanea sativa Mill.)涂有清漆的木质材料表面在经过冷热冲击后,光泽度值都有所下降。虽然所有木质表面的粗糙度 Rz 值都有所增加,但苏格兰松木和栗木的粗糙度 Ra 值有所增加,而东榉木的粗糙度 Ra 值则有所下降。经过表面处理的木质材料在不断变化的天气条件下的光泽度和粗糙度值可以决定所使用的表面材料是否有用。这项研究的结果对在设计海洋交通工具时使用木制品的制造商和向气候条件不同的国家出口家具的制造商很有帮助。
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来源期刊
Drvna Industrija
Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
1.80
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.
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