摘要
本文通过对难浸注的长白鱼鳞云杉气干5年心材进行水浸泡处理,探讨了纹孔塞位置可否回弹以提高木材渗透性的可能性。试验结果表明,气干5年长白鱼鳞云杉心材经水浸泡11周并用有机溶剂置换干燥后,平均气体渗透性增加了110%,但经成对比较试验t检验,以可靠性95%计差异不显著。表明气干5年后心材通过水浸泡处理,平均气体渗透性虽有增加,但偏移的纹孔塞可能并未重新回弹到中央位置使其渗透性获得真正的提高。
The possibility of pit deasPiration and its effect on the permeability of refractory Picea jezoensis var. komarovii air-dried heartwood was explored by pretreatment-resoaking in water. The axial gas permeability of wood samples was measured with rising-water volume-displacement method. The result showed that the average gas permeability of 5-year air-dried heartwood samples which were solvent exchange drying after resoaking period Of 11 weeks was increased by 110 percent over their controls of paired, comparative test, whereas the permeability difference of resoaking samples versus their controls was not significant at the 5% level by 't' test of paired comparative test. It suggests that aspirated pit of air-dried heartwood did not spring back to its normal position by resoaking in water so that the permeability was really improved.
出处
《木材工业》
北大核心
1992年第1期29-33,共5页
China Wood Industry
基金
国家自然科学基金
关键词
渗透性
纹孔塞位置
回弹
云杉
Picea jezoensis var komarovii
Permeability
Pit deaspiration
Solvent exchange drying
Resoaking
