HEAT TREATMENT EFFECT ON COLOUR CHANGES OF BEECH (FAGUSSYLVATICA) WOOD

Andromachi MITANI

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HEAT TREATMENT EFFECT ON COLOUR CHANGES OF BEECH (FAGUSSYLVATICA) WOOD

机译：热处理对山毛榉木材颜色变化的影响

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In this study the effects of thermal modification of beech wood (Fagus sylvatica) on color changes after heat treatment were determined. The heat treatment of beech wood was conducted in a temperature of 180°C and 200°C for five different durations ranging from 2 to 10h. It was observed a gradual color change of treated samples whereas after 4h treatment no significant changes were recorded, measured with a colorimeter. The greatest reduction of lightness indicator L* was observed between 2 and 4 hours whereas the most intense color differences compare to untreated samples were occurred in 8h and 10h treatments. Comparing the two treatment conditions there is an obvious colour difference. Moreover, at 4h treatments time the differences were approximately 27.92 units more. Finally, radial direction gave higher values regarding lightness and longitudinal the lowest.

机译：在这项研究中，确定了热处理后榉木（Fagus sylvatica）的热改性对颜色变化的影响。榉木的热处理在180°C和200°C的温度下进行2至10h的五个不同的持续时间。观察到处理样品的颜色逐渐变化，而处理4h后，用色度计测量未发现明显变化。在2至4小时内观察到亮度指示剂L *的最大减少，而与未处理的样品相比，最强烈的色差发生在8小时和10小时的处理中。比较两种处理条件，有明显的色差。此外，在治疗4h时，差异大约增加了27.92个单位。最终，径向给出了关于亮度的较高值，而纵向给出了最低的值。

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《Pro Ligno》 |2013年第4期|共6页
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Andromachi MITANI;
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1. Influence Of Heat Treatment On Antioxidant Properties And Colour Stability Of Beech And Spruce Wood And Their Extractives [J] . A. Ahajji, P. N. Diouf, F. Aloui, Wood Science and Technology . 2009,第1a2期

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3. Effects of surface inactivation, high temperature drying and preservative treatment on surface roughness and colour of alder and beech wood [J] . Aydin I, Colakoglu G Applied Surface Science . 2005,第2期

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HEAT TREATMENT EFFECT ON COLOUR CHANGES OF BEECH (FAGUSSYLVATICA) WOOD

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