环境条件对木家具底漆的水分挥发及封闭效果的影响

为了探讨环境条件对木家具底漆的水分挥发及封闭效果的影响．在5种自然干燥条件下，以枫木薄木贴面家具板材为基材，以水性封闭底漆为涂料，在分析干燥环境干燥能力基础上。用扫描电镜观察了涂层在基材上的封闭状态．用称量法研究了涂层水分挥发率和挥发速度。结果表明：水性封闭底漆封闭效果及干燥速度受干燥条件的影响明显。干燥30rain时，在温度11．2～13．2℃，湿度21．1％～23．4％，风速0．04～0．05m·s-1的干燥条件环境中．水分挥发率为16．48％；在温度18．9～19．1℃，湿度54．1％～55．6％，风速0．03～0．15m·s-1的干燥条件环境中，水分挥发率为2．23％：前者的封闭效果好。图6参19

Sealed state and moisture volatilization of water-based sealers for wood furniture tested in five environmental conditions

The sealed state and moisture volatilization of a water-borne sealer for wood furniture using maple- veneered panels were determined for five different natural environments. Drying ability in different conditions was analyzed and the sealed state was studied with a scanning electron microscope （SEM）. The dried-water weight for moisture and the drying rate were measured using a water weight-loss method. Results showed that the drying condition greatly influenced the sealed state and drying speed. After drying for 30 min with drying conditions of temperatures of 11.2-13.2 ℃, relative humidity of 21.1%-23.4%, and air velocity of 0.04-0.05 m·s-l; the moisture evaporation rate of the sealer was 16.48%. However, with temperatures of 18.9-19.1 ℃, relative humidity of 54.1%-55.6%, and air velocity of 0.03-0.15 m ·s-℃, the evaporation rate was 2.23%. Thus, the sealed state with 11.2-13.2℃ was better than with 18.9-19.1 ℃. Ch, 6 fig. 19 ref.]