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木材是一种有机复合材料,具有吸湿性质,其吸收或排除水分的能力决定于周围大气的温,湿度。木材长时间暴露在一定温度与一定相对湿度的空气中,其含水率会达到一种动态平衡,即蒸发水分和吸收水分的速度相等,这时木材的含水率称为平衡含水率。由于各地区的气候不同,因而各地区的木材平衡含水率亦有差异。木材由高湿度达到平衡,比由低湿度所达到的平衡,其含水率较高,此现象称为滞后现象。利用吸收滞后的现象将木材含水率干
Wood is an organic composite that has hygroscopic properties and its ability to absorb or remove moisture depends on the ambient temperature and humidity. Wood exposed to a certain temperature and relative humidity for a long time in the air, the moisture content will reach a dynamic equilibrium, that is, evaporation and absorption of water at the same speed, then the moisture content of wood called the equilibrium moisture content. Due to the different climates in different regions, the moisture content of wood in different regions is also different. Wood from the high humidity to achieve balance than the balance achieved by the low humidity, the higher the water content, this phenomenon is called the hysteresis. The use of absorption of the phenomenon of hysteresis wood moisture content dry