摘要
为改善速生杉木木材的性质,试验中先后用硫酸铝和水玻璃等溶液对其进行处理,浸入木材的铝离子与硅酸根离子结合,在木材微纤丝间隙和管胞(或纤维)的胞腔中生成硫酸铝沉淀,从而使木材中填充了大量的无机物,得到杉木无机复合木材。无机复合木材的尺寸稳定性显著提高,在最优化工艺下,复合木材的抗收缩系数可达34.21,稳定系数在80%以上。同时,复合木材除抗冲击韧性略有下降外,其余如抗弯强度、抗弯弹性模量、顺纹抗压强度及硬度等主要力学性能指标均有明显提高。
To improve the properties of fast growing Chinese fir, Aluminum Sulfate solution and water glass solution arc used successively to treat it in the experiment. As a result, the aluminum ions that go into the wood react with silicate ion to produce aluminum sulfate precipitation in the wood microfiber and fiber tracheid which fills the wood with a large amount of inorganic matters and then inorganic composite of Chinese fir is obtained. The dimensional stability of inorganic wood composite is improved substantially. Using the optimum technology, the anti-shrinkage efficiency of the wood composite can reach 34.31 and the stability coefficient is over 80%. Meanwhile, the anti-impact toughness of the composite drops a little bit and the other mechanical property indexes, such as bending efficiency, elasticity, compression strength parallel to grain and hardness have been improved considerably.
出处
《林业机械与木工设备》
2008年第11期18-21,共4页
Forestry Machinery & Woodworking Equipment
基金
湖南省林业厅人工林木材深加工关键技术研究重大专项
关键词
杉木
无机物
改性
尺寸稳定性
力学性能
China fir
inorganic substance
modification
dimensional stability
mechanical property
