花旗松、铁杉炭化木渗透性的研究
摘要：对花旗松和铁杉两种木材进行炭化，两种木材分别分两个方向：径向，弦向。每个方向都有三种实验温度，分别是170℃，212℃，230℃。最后将碳化好的木头用台钻钻成圆片放入李涛老师设计的木材气体渗透性的测试装置。记录实验数据并分析可得：花旗松和铁杉经过炭化之后，温度越高炭化程度越明显，效果越好；230℃渗透性大于212℃大于170℃；相对于铁杉，花旗松的炭化程度比铁杉的大。径向的渗透性是大于弦向的。
关键词：炭化木；渗透性；花旗松；铁杉；
Study on the carbonized wood permeability of Douglas fir and hemlock
Abstract: Two kinds of wood, Douglas fir and hemlock, were carbonized in two directions:radial, string direction. Each direction, there are three kinds of experimental temperature is 170 ℃, 212 ℃, 230 ℃. Finally, the carbonized wood was drilled into a round piece with a bench drill and put into the wood gas permeability testing device designed by teacher li tao. Experimental data were recorded and analyzed to obtain:After the carbonization of Douglas fir and hemlock, the higher the temperature, the more obvious the degree of carbonization, the better the effect. The permeability was greater than 212℃ and 170℃ at 230℃. Compared with hemlock, Douglas fir has a higher degree of carbonization than hemlock. The radial permeability is greater than the string direction.
Keywords： Carbonized wood; Permeability; Douglas fir. Hemlock.
木材渗透性的研究现状
1986年周崟，姜笑梅【1】对黄花落叶松超微结构及其对渗透性的影响研究表明，早材管胞具缘纹孔膜与松木纹孔膜类似；边材具缘纹孔膜有较少的无定形物质，结构清楚，多数闭塞和具碟形凹陷，邻近心材的边材部位，孔膜变厚，凹陷减少了；而心材不同，与边材恰恰相反，因此这是形成落叶松木材渗透性差的主要原因。
2001年苗平【2】对马尾松木材横向液体渗透的研究表明，马尾松木材的径向液体渗透性大于弦向，并且马尾松木材的径向，弦向液体渗透性都是从边裁向心材逐渐减小，并且随着含水率的下降而升高。
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