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Effects of heating treatment on some of the physical properties of varnish layers applied on various wood species

机译：热处理对涂在各种木材上的清漆层某些物理性能的影响

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The aim of the current study is to determine the effects of different heat treatment and varnish?combination applications?on some of the physical properties of wood materials sampled from?limba (Terminalia superba), iroko (Chlorophora excelsa), ash (Fraxinus excelsior?L.) and Anatolian chestnut (Castenea sativa?Mill.) species. The heat treatment was applied at two levels (150 and 180°C) for both 3 and 6 h period. Once heat treatment was conducted, four types of varnish layers (cellulose lacquer, synthetic varnish, polyurethane varnish and water based varnish) were applied to the materials. After the treatments application, color, brightness and surface roughness of varnish film layers of the treated woods were measured. The effects of heat treatment and varnish combination applications on the earlier mentioned variables were analyzed according to the study design (factorial design with?4 (species) x 2 (heat) x 2 (duration) x 4 (varnish) = 64 experimental units). For significant analysis of variance (ANOVA) , Duncan mean separation test was performed to separate the interaction combinations. Results of the study indicated that surface roughness increased on wood samples for all four wood species treated with?cellulose lacquer and synthetic varnish?and across all heating treatments. However, surface roughness decreased for all wood species depending on heating temperature and time. As such, the value of brightness?also decreased for all four wood species across all the treatment combinations.?The results obtained from the upper surface of the enforcement process are thought to contribute to the national economy.
机译：本研究的目的是确定不同热处理和清漆组合应用对从limba（Terminalia superba），iroko（Chlorophora excelsa），白蜡木（Fraxinus excelsior？）采样的木材的某些物理性能的影响。 L.）和安纳托利亚板栗（Castenea sativa？Mill。）种。在3小时和6小时的两个阶段（150和180°C）进行热处理。进行热处理后，将四种类型的清漆层（纤维素清漆，合成清漆，聚氨酯清漆和水基清漆）应用于材料。进行处理后，测量处理过的木材的清漆膜层的颜色，亮度和表面粗糙度。根据研究设计分析了热处理和清漆组合应用对前面提到的变量的影响（因子设计为？4（物种）x 2（热）x 2（持续时间）x 4（清漆）= 64个实验单位） 。对于方差的显着分析（ANOVA），执行Duncan均值分离测试以分离相互作用组合。研究结果表明，用纤维素漆和合成清漆处理过的所有四种木材，在所有热处理过程中，木材样品的表面粗糙度都会增加。但是，取决于加热温度和时间，所有木材的表面粗糙度都会降低。因此，在所有处理组合中，所有四种木材的亮度值也都降低了。从执法过程的上表面获得的结果被认为有助于国民经济。

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