摘要
采用窑式常压过热蒸汽方法对柞木(Quercus mongolica)地板坯料进行180℃和190℃超高温热处理。结果表明:在相对湿度40%~90%范围内,两种热处理均可以使木材干缩系数降低,并能有效减少使用环境温湿度变化对木材含水率变化的影响,从而提高柞木地板使用时的稳定性。两种工艺分别使柞木地板的湿胀稳定性提高31.03%和44.83%,干缩稳定性提高34.26%和47.41%,在地热采暖环境下,宜采用经190℃高温热处理后的柞木木材。
The Quercus mongolica unfinished flooring strips was heat-treated at 180 ℃ and 190 ℃ separately with super-high temperature in atmospheric-pressure super-heated steam kiln method. The influence of treatment on the dimensional stability of Q. mongolica unfinished flooring strips were studied when relative humidity varied between 40% and 90%. The results showed that heat-treatment can reduce shrinkage coefficient of wood, and it can remarkably reduce the influence of environmental temperature and relative humidity variations on wood moisture content, accordingly increasing the stability for use of Q. mongolica flooring. The two technologies can increase the swell stability of Q. mongolica flooring by 31.03% and 44.83% separately, and the shrinkage stability by 34.26% and 47.41% separately. The Q. mongolica unfinished flooring strips heated-treated at 190℃ should be used at the working conditions of geothermal heating.
出处
《广东林业科技》
2015年第4期75-78,共4页
Forestry Science and Technology of Guangdong Province
关键词
柞木
超高温热处理
木材稳定性
干缩系数
实木地板
Quercus mongolica
super-high temperature heat-treatment
wood stability
shrinkage coefficient
solid wood flooring
