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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (19): 44-48.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

速生人工林桉树木材高温热处理研究

巫国富 韦春义 曾俊钦 韦文榜   

  • 收稿日期:2011-01-24 修回日期:2011-02-25 出版日期:2011-08-05 发布日期:2011-08-05

Study on High Temperature Heat Treatment of Plantation Eucalypt Wood

  • Received:2011-01-24 Revised:2011-02-25 Online:2011-08-05 Published:2011-08-05

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摘要：

广西速生人工林桉树资源丰富，但其木材极易端裂、尺寸稳定性和耐久性差，为了提高其使用范围和产品附加值，笔者采用单因素试验方法对其进行高温热处理研究。主要探讨了热处理工艺对速生桉木材尺寸稳定性和化学基团的影响。试验结果表明：热处理温度在165~210℃，热处理时间在1~4 h范围内。随着处理温度和时间的延长，木材平衡含水率逐渐降低，从木材的FTIR图可知，羟基吸收峰的强度明显降低，羰基吸收峰的强度略呈降低趋势；经210℃处理的试件的平衡含水率比未处理的降低了43.12%，方差分析表明，热处理温度对平衡含水率影响更显著。高温热处理对速生人工林桉树木材的改性效果显著，能够大大提高其尺寸稳定性。

关键词: 景观指数, 景观指数, 粒度效应, 涑水河流域

Abstract:

Guangxi has abundant resources plantation eucalypt wood, but it has lots of disadvantages such as split, dimension stability and durability poor. To enhance its ranges of use and product added value, so the author made a study on high temperature heat treatment of it by the single factor method. The characteristics of FTIR and the effect of temperature and time of heat treated on the equilibrium moisture content (EMC) of heat-treated wood (plantation eucalypt) had been researched in this paper. The results indicated that with the heat treated temperature and time increased, the EMC of wood decreased and the intensity of absorption peak of hydroxyl decreased significantly in heat treated temperature 165-210℃ and time in 1-4 h range; treated wood in 210℃ compared with EMC of untreated wood, that was decreased by 43.12%. Party's analysis showed that heat temperature affected to EMC even more notable. The results showed that decrease significantly used high temperature heat treatment to improve characteristics of plantation eucalypt wood and could greatly enhance the dimension stability.