CAJ | 학술논문

试验采用过热蒸汽作为传热介质和保护气体，对圆盘豆木材进行热处理，热处理温度为160℃、180℃、200℃、220℃，热处理时间为2h、4h、6h、8h，并采用紫外光谱和气-质联用对圆盘豆木粉抽提物进行分析。结果表明，热处理后圆盘豆木材颜色发生明显变化。随着热处理温度升高，木材明度L＊下降，红绿色品指数a＊变化不明显，黄蓝色品指数b＊下降，色差ΔAE＊增大，木材表面颜色加深，其主要原因是木素及木材抽提物发生了氧化、还原反应。
시험채용과열증기작위전열개질화보호기체，대원반두목재진행열처리，열처리온도위160℃、180℃、200℃、220℃，열처리시간위2h、4h、6h、8h，병채용자외광보화기-질련용대원반두목분추제물진행분석。결과표명，열처리후원반두목재안색발생명현변화。수착열처리온도승고，목재명도L＊하강，홍록색품지수a＊변화불명현，황람색품지수b＊하강，색차ΔAE＊증대，목재표면안색가심，기주요원인시목소급목재추제물발생료양화、환원반응。
Abstract：With superheated steam as a heat transfer medium and a protective gas, the termal treatment of okan wood is conducted at different temperatures of 160℃, 180℃, 200℃, and 220 ℃ for 2h, 4h, 6h andd 8h respectively, with UV spectroscopy and gas chromatography-mass spectrometry used for the analysis of okan wood powder extract. The results show that the color of okan wood changes obviously after thermal treatment. With the increase in heat treatment temperature, the wood brightness parameter L＊ decreases sharply, red and green index a＊ doesn＇t change noticeably, yellow and blue index b＊ declines and color differenceΔE＊ increase evidently with the darkening of wood surface color. These are mainly caused by the oxidation and reduction reactions of lignin and wood extract.