摘要： 基于减少能源消耗及缓解热岛效应的要求，以铁铬黑为颜料，硅溶胶-苯丙复合乳液为基料，制备了黑色系建筑节能涂料，探讨了颜料掺量及涂层厚度对节能涂料光学性能的影响。 采用 XRD 衍射仪、紫外/可见光/近红外分光光度计、精密色度仪等分析颜料的物相结构及光学性能。 采用红外灯模拟太阳热源测量涂层的隔热性能。 结果表明:铁铬黑颜料的近红外平均反射率为 57%，且反射光谱与叶绿素基本一致;当颜料掺量为 10%、涂层干膜厚度为 150 μm 时，涂层的近红外平均反射率为 39.2%，长波发射率为 0.89，隔热效果明显，其平衡温度较空白样低 9. 8 °C ，具有一定的实际应用价值。

关键词: 建筑节能, 颜料, 铁铬黑, 长波发射率, 近红外反射率

Abstract: Based on the requirement of reducing energy consumption and relieving urban heat island effect, a series of black energy-saving architectural coatings were prepared using FeCr black as pigments and silica sol-styrene acrylic latex as film-forming binder. The effects of pigment dosage and film thickness on optical properties of the prepared coatings were analyzed. Meanwhile, the phase structure and optical properties of pigments were characterized by XRD diffraction and ultraviolet/visible/near infrared spectrophotometer techniques. Infrared lamp simulating sunlight heat experiment was applied to analyze the heat insulation properties of the film. The result revealed that FeCr black pigments gave its average NIR reflectance 57% and showed the similar reflection spectral to Chlorophyll. When the filler content was 10%, the DFT was 150 μm, the film had the best NIR reflectance(i.e.,39.2%), and the long wave emissivity was 0. 89, the equilibrium temperature was 9.8 ℃ lower than that of the blank samples. Furthermore, the prepared coatings had good heat insulation performance with potential applications.

Key words: energy-saving building, FeCr black pigments, long wave emissivity; NIR reflectance