采用酞菁染料(直接耐晒翠蓝GL)包覆金红石型TiO2制备蓝色系列红外热反射复合颜料,研究了TiO2的包覆工艺,获得了较优的工艺条件如下:m(BaCl2)∶m(TiO2)=0.2,反应温度80 ℃,反应液pH=8.将此复合颜料制成涂料,研究了涂料的红外反射、隔热及耐酸碱性能.结果显示,含此蓝色复合颜料的涂层其红外反射率高达81.5%,比颜色相近的混合颜料涂层的反射率提高了37.9%;含复合颜料的涂层其底面温度比含钴蓝颜料的涂层降低约13.6%,比含混合颜料的涂层降低约10.6%;该含酞菁染料包覆TiO2颜料的涂料具有较好的耐碱性和耐酸性.
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