人工林落叶松髓心方材高频／真空干燥工艺研究  

Radio Frequency/Vacuum Drying for Boxed-heart Timber of Plantation Larch

作　　者：李晓玲[1] 高瑞清[1] 构涛[1] 何清慧[1] 张立宾[1] 

机构地区：[1]中国林科院木材工业研究所；国家林业局木材科学与技术重点实验室,北京100091

出　　处：《木材工业》2010年第1期29-32,共4页China Wood Industry

基　　金：院所基本科研业务费专项资金项目(CAFINT2007C09)

摘　　要：对人工林落叶松含髓心方材进行高频真空干燥试验,以确定高频真空干燥工艺参数。结果表明,适宜的高频真空干燥工艺,不但能保证落叶松髓心方材干燥质量,而且能大幅度提高干燥速度。试验得出较佳的干燥工艺条件为:电流0.4A,输入电压2kV;高频开启3min停1min,控制温度50℃;干燥初期真空度为13.33kPa,干燥后期真空度为6.67kPa。A series of radio frequency/vacuum （RF/V） drying tests were conducted on boxed-heart timbers of plantation larch. Various RF/V conditions were analyzed to optimize the drying quality and drying speed. We found that the optimized RF/V parameters were： 0.4 A input current, 2 kV electrode voltage,50 ℃ temperature, 3 minutes oscillation circle then 1 minute for stopping; and 13.33 kPa vacuum pressure at the early drying stage and 6. 67 kPa at the final stage.

关 键 词：高频真空(RF/V)干燥 落叶松髓心方材 干燥质量 干燥工艺 

分 类 号：S781[农业科学—木材科学与技术]