以日本柳杉(Cryptomeria japonica Don)为试材，经120、140、180 ℃，相对湿度为0、60 %和100 %过热蒸汽处理后，采用X射线衍射仪进行测试，分析了不同温度及湿度条件对木材相对结晶度的影响。通过正交试验分析得出：高温高湿处理后木材的相对结晶度最大，处理后木材的相对结晶度受温度的影响非常显著，受相对湿度的影响不显著。
Abstract
Effects of temperature and relative humidity(RH) on relative crystallinity of wood were discussed in this paper. Specimens from Japanese Sugi(Cryptomeria japonica Don)wood were treated with superheated steam under different temperature (120, 140, 180 ℃) and different RH (0, 60 %, 100 %), and the effects on relative crystallinity of wood was examined by Xray diffractometer. The highest relative crystallinity was found on specimens treated with the highest temperature and the highest RH by orthogonal experiment analysis. It was found that temperature has more important effect than RH. Variance analysis showed that relative crystallinity depends more significantly on temperature, and less significantly on RH.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1]Dwianto W, Morooka T, Norimoto M. Stress relaxation of sugi wood(Cryptomeria japonica Don) in radial compression under high temperature steam[J]. Holzforschung, 1999, 53(5): 541-546. [2]東原 貴志,師岡 淳郎,則元 京. 水蒸気処理木材の圧縮変形固定とその機構[J]. 木材学会誌,2000,46(4):291-297. [3]大島克仁. 過熱水蒸気下での木材の力学特性[D]. 东京:京都大学農学部,2002. [4]赵钟声,刘一星,孟令联. 高温高压水蒸气处理制造压缩木、人造板材的研究[J]. 林业机械与木工设备,2001(11):16-17. [5]Cheng Wanli, Morook T, Liu Yixing, et al. Shrinkage stress of wood during drying under superheated steam above 100℃[J]. Holzforschung, 2004, 58(4): 423-427. [6]程万里,刘一星,師岡敏朗,等. 高温高压蒸汽干燥过程中木材的收缩应力特征[J]. 北京林业大学学报,2005,27(2):101-106. [7]程万里,刘一星,齐华春,等. 木材过热蒸汽干燥过程中的收缩应力(Ⅰ)径向收缩应力特征[J]. 东北林业大学学报,2004,32(6):32-34. [8]程万里,刘一星,師岡敏朗,等. 高温高压蒸汽条件下木材的拉伸应力松弛[J]. 北京林业大学学报,2007,29(4):84-89. [9]齐华春,程万里,刘一星,等. 高温高压过热蒸汽处理木材的力学特性及化学成分变化[J]. 东北林业大学学报,2005,33(3):44-46. [10]李坚. 木材波谱学[M]. 北京:科学出版社,2003.
基金
收稿日期：2009-03-19修回日期：2010-07-05基金项目：国家自然科学基金项目(30871981)作者简介：张士成(1955—),教授。Email: zhshch2000@163.com。引文格式：张士成,齐华春,刘一星,等. 高温过热蒸汽处理对木材结晶性能的影响[J]. 南京林业大学学报:自然科学版,2010,34(5):164-166.
PDF(492875 KB)
