| 吸湿范围内毛白杨木材径向透气性的研究 |
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| 引用本文： | 王天龙,罗成.吸湿范围内毛白杨木材径向透气性的研究[J].辽宁林业科技,2005(5):12-14. |
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| 作者姓名： | 王天龙 罗成 |
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| 作者单位： | 北京林业大学,材料学院,北京,100083;北京林业大学,材料学院,北京,100083 |
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| 摘 要： | 文章利用自行研制的木材透气性实验装置，探讨了木材含水率、厚度和压力对毛白杨透气性的影响。实验证明：实验装置结构合理，气密性较高，操作方便，满足测量要求；在吸湿范围内：木材透气性与含水率呈负二次曲线关系，含水率为10％左右透气性最大；透气性随着压力差的增加而增加，并呈直线上升趋势；透气性随着厚度的增加而减少，并呈指数下降趋势；在本实验探讨的影响因素中，含水率和厚度对透气性的影响显著。
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| 关 键 词： | 木材透气性 木材含水率 压力 厚度 |
| 文章编号： | 1001-1714(2005)05-0012-03 |
| 收稿时间： | 06 10 2005 12:00AM |
| 修稿时间： | 08 9 2005 12:00AM |
The study of radial gas permeability for Populus tomentosa wood |
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| WANG Tian-long,LUO Cheng.The study of radial gas permeability for Populus tomentosa wood[J].Liaoning Forestry Science and Technology,2005(5):12-14. |
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| Authors: | WANG Tian-long LUO Cheng |
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| Abstract: | In this paper,influences of water content,thickness and pressure of wood on gas permeability of Populus tomentosa were discussed by using self-made equipments.The result indicated: the experimental equipments were reasonable structurally,and good measurement precision,convenient in use and suitable for requests of measurement;in the moisture absorption range,gas permeability of wood was negative conic with water content,and was biggest when water content was about 10%;gas permeability of wood increased as pressure increased,and showed a going up beeline trend;gas permeability of wood decreased as thickness increased,and showed a cutting down exponent trend;among factors discussed,influences of wood water content and thickness on gas permeability were significant. |
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| Keywords: | gas permeability of wood water content thickness pressure |
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