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本文研究了我国东北四种常见木材的抽提物对渗透性影响的变化规律,测量了木材抽提前后渗透性的改变,应用电子显微镜观察了木材抽提后微观结构的变化,分析和探讨了未材抽提对渗透性影响的机理。结果表明,木材经过四种方法的抽提以后渗透性均有不同程度的提高。木材渗透性的提高与抽提时间成线性关系。抽提改善了木材内部流体流动的通路,提高木材渗透性的内在原因是除去了纹孔膜上的结壳物质。
In this paper, the changes of permeability of four common wood extracts in northeast China were studied. The permeability of wood was measured before and after extraction. The changes of microstructure after wood extraction were observed by electron microscope. The mechanism of unpolished extraction on permeability. The results showed that the permeability of wood after the extraction of the four methods all increased to some extent. The permeability of wood is linear with extraction time. Extracting improved access to fluid flow within the wood and the inherent reason for increasing wood permeability is the removal of crust material from the pitted membrane.