目的 探究反射型、阻隔型和辐射型填料对建筑节能涂层反射隔热性能的影响，为填料在建筑节能涂料中的筛选应用提供一定的理论支撑。方法 分别将金红石型二氧化钛、空心玻璃微珠和远红外陶瓷粉与苯丙乳液共混，制备了反射型、阻隔型和辐射型建筑节能涂料。采用扫描电子显微镜、紫外/可见/近红外反光光度计、导热系数测量仪和红外发射率测量仪对涂层性能进行表征，探究了三种填料添加量和平均粒径对涂层反射隔热性能的影响。结果 金红石型二氧化钛、空心玻璃微珠和远红外陶瓷粉的最佳添加量（占成膜物质总质量的百分比，全文同）和平均粒径分别为25%和0.25 μm、9%和325目、9%和1 μm。此时对应涂层的太阳光平均反射率、导热系数、8~14 μm波段的红外发射率分别为85.88%、0.05 W/(m?K)和0.91，隔热性能优异。结论 填料添加量和平均粒径对建筑节能涂层的隔热性能均具有一定的影响，实际应用时可根据需要选择填料添加量和平均粒径。

The work aims to provide theoretical support for filler selection and application to building-energy saving coating by studying effects of reflective, insulating and radiant fillers on reflective/thermal insulation performance of building energy-saving coating. The reflective, insulating and radiant building-energy saving paints were prepared by mixing rutile titanium dioxide, hollow glass bead and far infrared ceramic powder with styrene-acrylic emulsion, respectively. Properties of the coatings were characterized by using scanning electron microscope, ultraviolet/visible/near-infrared spectrophotometer, heat conductivity coefficient measuring instrument and infrared emittance measurement instrument. Effects of content and average grain size of the fillers on reflective/thermal insulation performance of the coating were investigated. Optimal content (percentage accounts for total mass of film forming material) and average grain size of rutile titanium dioxide, hollow glass bead and far infrared ceramic powder were 25% and 0.25 μm, 9% and 325 mesh, 9% and 1 μm, respectively. Meanwhile, average solar reflectance, heat conductivity coefficient and infrared emittance in 8~14 μm band of corresponding coating was 85.88%, 0.05 W/(m?K) and 0.91, respectively. Excellent thermal insulation performance was obtained. Thermal insulation performance of building energy-saving coating is affected by both content and average grain size of filler, hence both shall be selected as required during actual application.