| 摘要: |
| 研究了热水处理的温度和时间对王桉（eucalyptus regnans）木材全干干缩率和皱缩的影响。结果表明：随着处理温度的升高，王桉木材的全干干缩率呈增大的趋势，70℃和80℃时，处理时间对王桉木材的各向干缩率的影响不大； 90℃和100℃时，处理时间对王桉木材的各向干缩率影响明显。经100℃热水处理6h后王桉木材体积、弦向和径向全干干缩率分别增大了78.3%、116.1%和44.4%，分别达到25.5%，18.8%，7.8%。王桉木材的皱缩深度随处理温度的升高显著增大，处理时间对王桉皱缩深度的影响不明显。 |
| 关键词: 王桉木材 热水处理 干缩率 皱缩 |
| DOI： |
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| 基金项目:广东省教育部、科技部企业科技特派员行动计划专项项目（2009B090600108）。 |
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| Effects of hot water treatments on the shrinkage and collapse of eucalyptus regnans |
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peng pengxiang, tu dengyun
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College of Forestry, South China Agricultural University
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| Abstract: |
| The objective of this study was to show the influence of hot water treatments on the shrinkage and collapse of eucalyptus regnans. Results showed that the shrinkage was increasing bigger when the temperature was higher. At 70 and 80℃, no correlation was found between shrinkage and time; but at 90 and 100℃, the results was the opposite, the shrinkage was correlated with time. After treated by 100℃ hot water for 6 hours, the oven-dried volumetric, tangential, radial shrinkage of E.regnans were as high as 78.3%,116.1%,44.4%,coming to 25.5%,18.8% and 7.8%.The collapse of E.regnans become more serious beacause of the higher temperature, but there was hardly effect about time changed. |
| Key words: eucalyptus regnans hot water treatment shrinkage collapse |
