海口地区板材气干试验  

Air seasoning Test of Lumber in Haikou Region

作　　者：蔡则谟[1] 胡慕任 岑克国 

机构地区：[1]中国林科院热带林业研究所

出　　处：《木材工业》1997年第1期21-24,共4页China Wood Industry

摘　　要：以海南省的２种针叶树材及１５种阔叶树材为材料，进行了海口地区板材气干试验。试样厚度以２５ｍｍ为主，试验结果如下：①一年中，１、２、１１及１２月的干燥速率低，不适宜于木材气干；②树种与板材厚度对干燥率影响大；③以２５ｍｍ厚板的干燥率为１．０，１５ｍｍ板为２．２，５０ｍｍ板为０．３；④气干过程，木材含水率对干燥率的影响最大，相对湿度和温度次之，风速和大气压力的影响不显著；④板材种间的平均平衡含水率差异显著。With 2 coniferous tree species and 15 broad leaved tree species as testing material, an air seasoning test of lumber was carried out at Haikou region. 25 mm was chosen as main thickness of the lumber, and a small amounts of lumber with 15 and 50 mm in thickness were tested as well. The final moisture content of 20% was adopted while analyzing the data, and the following results were obtained: 1 In a year, the low drying rates occurred in Jan., Feb., Nov. and Dec.. So these months are not suitable for air seasoning of lumber in this region. 2 Among the species studied, Cyclobalanopsis patelliformis and Engelhardtia roxburghiana had lower drying rates (<1.0), Podocarpus imbricatus, Adinandra hainanensis, Artocarpus styracifolia and Schefflera octophylla , higher drying rates (2.1～3.0), and the other ten species, medium (1.0～2.0). 3 If the drying rate of 25 mm lumber was held as the base number of 1.0,the corresponding values were 2.2 and 0.3 for the 15 and 50 mm lumber, respectively. 4 An analysis of multiple regression showed that, in the process of air seasoning,the moisture content of wood was the most important factor affecting the drying rate of lumber, followed by the relative humidity and temperature. The effects of wind speed and atmospheric pressure were not significant. 5 Significant differences were found in equilibrium moisture contents among the difference wood species tested, but not the thickness of the lumber. The average EMC ofthelumbertested was 17.2%.

关 键 词：木材 大气干燥 干燥率 延续期 板材 

分 类 号：TS652[轻工技术与工程]