龙竹竹材径向和弦向气体渗透性研究.doc

文档介绍：龙竹竹材径向和弦向气体渗透性研究
孙照斌1 袁哲2 强明礼2 杨燕2
(1河北农业大学林学院, 河北保定071000; 2西南林学院木质科学与装饰工程学院, 云南昆明 650224)
摘要:本研究参照木材流体渗透特性相关理论和研究方法,首次对大型丛生竹种-龙竹竹材的流体渗透性进行了系统研究,测定和分析了龙竹径向和弦向的气体渗透性。结果表明:预处理方法和竹材构造对竹材流体渗透性有显著影响。弦向渗透性大于径向渗透性;预处理可提高竹材气体渗透性,水煮预处理试件的渗透性优于汽蒸预处理试件的渗透性;含水率对竹材流体渗透性有影响,随竹材试件含水率降低,竹材流体渗透性增加。这些结论可为竹材防霉处理、染色处理、防火处理等改性处理提供有益的参考。
关键词:龙竹气体渗透性预处理
Study on the permeability of bamboo timber of Dendrocalamus gigangteus in the tangential direction and in the radial direction
SUN Zhao-bin1 YUAN Zhe2 QIANG Min-li2 YANG Yan2
(1. Forestry college, Agricultural University of Hebei, Baoding, Hebei ,071000;2. The Faculty of Wood Science and Interior Decoration, Southwest Forestry College, Kunming, Yunnan 650224)
Abstract: Following the relevant theory and research approaches of permeability of wood, the systemic research on the permeability of bamboo timber of Dendrocalamus gigangteus was firstly carried out, and permeability of bamboo timber were firstly measured and results indicated that the pretreatment methods and the structure of bamboo had significant effects on the permeability behaviors. The fluid permeability of bamboo timber is higher in the tangential direction than that in the radial direction; the fluid permeability could be improved by pretreating the sample and by decreasing the moisture content of sample as well. These conclusions can provide beneficial reference fo