以自制BaSO4-CaCO3-CaF2为功能填料,水性丙烯酸乳液为成膜物质,钛白粉和滑石粉为体质颜料,辅以多种功能助剂,按一定配比混合经搅拌和球磨制得高发射率建筑保温隔热涂料.采用XRD、FT-IR及光谱发射率等手段分析表征了功能填料的结构和红外功能特性,研究了钛白粉添加量、功能填料添加量及搅拌时间分别对涂料太阳光反射比、隔热温差及稳定性的影响,优化了涂料最佳配比.结果表明:功能填料在7～20μm波段内平均发射率为0.89;钛白粉和功能填料添加量分别为16％和30％,搅拌时间为23 h时,涂层隔热温差可达18.4℃,涂料红外光谱发射率最高可达0.93,在7～20 μm波段内平均发射率为0.90,涂层具有良好的保温隔热效果.
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