摘要
采用常压和真空加压渗透法,进行不同条件下毛竹(Phyllostachys heterocyclacv pubescens)竹片的染料溶液渗透试验。结果表明:当渗透时间相同时,毛竹竹片的质量增加率和渗透深度均随竹片含水率的升高而较快降低,当渗透时间为24h时,含水率为50%的试材渗透深度约为含水率为12%的试材的207%;竹片越长染料溶液的渗透性能越差,当渗透时间为24h时,200mm长度试材的渗透深度约为100mm的663%;无竹节竹片的染料溶液渗透性能优于含竹节竹片,当渗透时间为24h时,有竹节试材的渗透深度约为无竹节试材的705%;染料溶液在竹片纵向的渗透性能比径向和弦向大得多,其渗透深度的大小顺序为:径向<弦向<纵向;酸性染料溶液的渗透性能优于碱性染料;染料溶液浓度越大,渗透性能越低,1%酸性大红染料水溶液的渗透深度分别为浓度为3%、5%的1256%、1857%;染料溶液的pH值为45时渗透性能最好;提高染料溶液的温度可以提高渗透性能;增加染料溶液的渗透时间可以较快提高其渗透性能;真空加压浸注与常压浸注相比,能显著提高竹片的染料溶液渗透性能。
Bamboo（Phyllostachys heterocycla cv. pubescens） strips were selected for testing permeability of dye solution using vacuum process and non-pressure treatment under different conditions. The results showed that at same treatment duration, quantity increase of strips and permeable depth of dye solution in strips decreased quickly with the increase of moisture content of strip, and when treated duration was 24 hours, permeable depth of dye solution in strips with moisture content of 50% had only 20.7% of that in strips with moisture content of 12%. The test showed that longer strips had worse permeability, and when treated duration was 24 hours, permeable depth of dye solution in strips of 200mm had only 66.3% of that in strips of 100mm. Permeability of strips without node had better result than that with node. Permeability of dye solution was much better in strips longitudinal than radial and chord direction. Permeable depth of dye solution in strips had orders as follows： ridialchord directionlongitudinal. And permeability decreased with dye solution concentration. Permeability of dye solution with pH value of 4.5 had the best result. Increase of dye solution＇s temperature and treated duration had positive effect on permeability. Vacuum process had the same effect.
出处
《浙江林业科技》
北大核心
2010年第5期9-13,共5页
Journal of Zhejiang Forestry Science and Technology
基金
浙江省"151人才工程"第二层次培养人员资助计划(2251200014)
浙江省新苗人才计划(2007R40G2100024)
浙江农林大学科研发展基金(2351000895)
关键词
毛竹
竹片
染料溶液
渗透性能
影响因子
Phyllostachys heterocycla cv. pubescens
bamboo strip
dye solution
permeability
influence factor
