水性建筑节能涂料的制备工艺优化

以铬绿为颜料的水性建筑节能涂料为研究物,探究其主要制备工艺对涂层性能的影响。采用差示扫描量热仪、紫外/可见/近红外分光光度计、红外发射率测量仪、涂层光泽度测量仪和涂层测厚仪对涂料性能进行表征。结果表明,增大固化温度可明显提高涂料的固化速度。涂料固化温度、涂料体系粘度、涂层表面粗糙度和涂层厚度对涂层8~14μm波段的红外发射率影响均较小,但对涂层太阳光和近红外反射比有一定的影响。固化温度、粘度、制备方式和厚度分别以65℃、370.1 m Pa·s、喷涂和250μm为宜。实际应用时应综合考虑几种制备工艺来获得较满意的涂层性能。

Optimization of Preparation Process of Water-based Building Energy Saving Coatings

Effect of major preparation process on performance of water-based building energy saving coating with chrome green pigment was investigated. Properties of building energy saving coatings were characterized by using differential scanning calormimetry (DSC), ultraviolet/visible/near infrared spectrophotometer, infrared emissivity measurement device, coating glossiness measurement device, coating thickness measurement device. The results indicate that curing speed of paint can be accelerated by increasing curing temperature. Effect of curing temperature, viscosity, coating surface glossiness and coating thickness on infrared emissivity in8～14 μmis inapparent. Whereas, their influences on total solar reflentance and near infrared reflectance are apparent. Suitable curing temperature, viscosity, preparation method and coating thickness are 65℃, 370.1 mPa?s, spraying and 250μm,respectively. All preparation processes should comprehensively be considered to prepare the coating with good properties.