【摘要】 采用百度试验法,结合常规干燥、真空干燥、常规-真空联合干燥三种不同干燥方式,研究了圆角桉和柠檬桉人工林木材干燥特性和干燥基准.结果表明:两桉材前期开裂和皱缩比较严重,截面变形达到5级,属难干材,特别是含水率在30%以上时,干燥速度不宜过快,并须要对其进行前期、中期及终期处理.综合考虑干燥速度与干燥质量,常规-真空联合干燥是其较为理想的干燥方法.更多还原

【Abstract】 The drying characteristics and drying schedules of E.umbellate and E.citriodora from Eucalyptus plantation wood were investigated with the drying test at 100℃ as well as the conventional drying, vacuum drying, and the combination drying. The results show that the preperiod cracks and collapses of the two Eucalyptus plantation woods are serious; that the crosssection deformation reaches the 5th class; therefore, the wood is difficult to dry; and particularly, the drying speed couldn’t be too fast when the moisture content is over 30%; and that prophase, metaphase and end period managements should be conducted. It is a conclusion that combination of the conventional drying and vacuum drying is a desirable method with respect to the drying speed and quality.更多还原