| 杉木冷冻干燥材和气干材液体浸注性的比较研究 |
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| 作者姓名： | LU Jian-xiong LIN Zhi-yuan JIANG Jia-li JIANG Jing-hui |
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| 作者单位： | 中国林业科学研究院木材工业研究所,北京,100091;中国林业科学研究院木材工业研究所,北京,100091;中国林业科学研究院木材工业研究所,北京,100091;中国林业科学研究院木材工业研究所,北京,100091 |
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| 基金项目： | This paper was supported by the National Natural Science Foundation of China （No. 30271053） |
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| 摘 要： | A comparative study was conducted on liquid penetration of the freeze-drying and air-drying sapwood and heartwood lumber of plantation Chinese fir （Cunninghamia lanceolata）. The maximum amount of dyeing solution uptake by the capillary rise method was used to evaluate the liquid penetration properties of the treated wood. The pit aspiration ratio was determined by semithin section method. Changes in wood microstructure were investigated using scanning electron microscopy. The results showed that compared with air drying, the freeze drying had a significant effect on liquid penetration of sapwood and heartwood of Chinese fir. The liquid penetration of sapwood is significantly higher than that of the heartwood for both drying treatments. Low pit aspiration ratio and cracks of pits membrane of some bordered pits are the main reasons for increasing liquid penetration after freeze drying treatment.
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| 关 键 词： | 杉木 心材板材 边材板材 冷冻干燥 大气干燥 液体浸注性 纹孔闭塞率 |
| 文章编号： | 1007-662X（2005）04-0293-03 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005-10-11 |
Liquid penetration of freeze-drying and air-drying wood of plantation Chinese fir |
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| LU Jian-xiong LIN Zhi-yuan JIANG Jia-li JIANG Jing-hui.Liquid penetration of freeze-drying and air-drying wood of plantation Chinese fir[J].Journal of Forestry Research,2005,16(4):293-295. |
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| Authors: | Lu Jian-xiong Lin Zhi-yuan Jiang Jia-li Jiang Jing-hui |
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| Institution: | (1) Research Institute of Wood Industry, Chinese Academy of Forestry, 10009 Beijing, P. R. China |
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| Abstract: | A comparative study was conducted on liquid penetration of the freeze-drying and air-drying sapwood and heartwood lumber of plantation Chinese fir (Cunninghamia lanceolata). The maximum amount of dyeing solution uptake by the capillary rise method was used to evaluate the liquid penetration properties of the treated wood. The pit aspiration ratio was determined by semithin section method. Changes in wood microstructure were investigated using scanning electron microscopy. The results showed that compared with air drying, the freeze drying had a significant effect on liquid penetration of sapwood and heartwood of Chinese fir. The liquid penetration of sapwood is signifi-cantly higher than that of the heartwood for both drying treatments. Low pit aspiration ratio and cracks of pits membrane of some bordered pits are the main reasons for increasing liquid penetration after freeze drying treatment. |
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| Keywords: | Chinese fir Sapwood lumber Heartwood lumber Freeze drying Air drying Liquid penetration Pit aspiration ratio |
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