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林业科学 ›› 2009, Vol. 12 ›› Issue (2): 92-97.doi: 10.11707/j.1001-7488.20090216

• 论文 • 上一篇    下一篇

185 ℃ 高温热处理对水曲柳木材力学性能的影响

李涛 顾炼百   

  1. (南京林业大学 南京 210037)
  • 收稿日期:2007-09-29 修回日期:1900-01-01 出版日期:2009-02-25 发布日期:2009-02-25

Effects of High Temperature Heat Treatment at 185 ℃ on Mechanical Properties of Ash Wood

Li Tao,Gu Lianbai   

  1. (Nanjing Forestry University Nanjing 210037)
  • Received:2007-09-29 Revised:1900-01-01 Online:2009-02-25 Published:2009-02-25

摘要:

摘 要:对经过185 ℃生产性高温热处理的水曲柳木材的力学性能进行测试和分析。结果表明:与素材一样,处理材弦径向弹性模量之间没有显著差异;高温热处理对水曲柳木材弦向弯曲强度和横纹抗压强度有不利影响,而弦向弹性模量、顺纹抗压强度、表面硬度等受此种工艺的影响很小。若将处理材与素材在实际使用情况下的力学性能进行比较,处理材除了在弦向弯曲强度上仍比素材低,上述各项力学性能均高于素。

关键词: 关键词:高温热处理, 生产性, 水曲柳, 地板坯料, 力学性能

Abstract:

Abstract: In this paper, the effects of high temperature heat treatment at 185 ℃ in commercial scale on mechanical properties of ash ( Fraxinus mandshurica ) wood were investigated. The results showed that there was no visible difference between modulus of elasticity (MOE) in tangential direction and that in radial direction of treated wood, which was the same to the reference. There were negative effects on modulus of rupture (MOR) in tangential direction and partial compressive stress perpendicular to the grain of ash wood by this method, but had hardly any effects on MOE in tangential direction, compressive strength parallel to the grain, surface hardness, etc.. If comparing the mechanical properties of treated wood with the reference in service condition, it was concluded that the above mechanical properties of treated wood were better than the reference except for MOR in tangential direction.

Key words: Key words: high temperature heat treatment, commercial scale, ash ( Fraxinus mandshurica ), blank for solid wood flooring, mechanical properties