以煤系高岭土矿为原料，丙三醇为插层剂，采用超声辅助液相插层工艺，经湿法球磨、喷雾干燥、旋风分离、焙烧后制备煤系高岭土，并对其微观形貌进行了表征。以所得煤系高岭土为原料制备水性环氧内墙仿瓷涂料，并和市场上的同类产品进行对比研究，采用白度仪、反射率测定仪、紫外灯照射、冷热循环、耐洗刷仪测定涂层各项性能。结果表明：采用超声辅助液相插层法制备的高岭土其形貌、粒度、白度与钛白粉相近，优于市售同类产品；与钛白粉按质量比4∶6掺杂制备涂料时实现了协同效应，在白度、遮盖力、耐紫外、耐干擦、耐冷热循环方面都优于市售高岭土和钛白粉复配效果，可显著降低涂料成本。
A coal-based kaolin is prepared by using coal-based kaolinite mineral as raw material and glycerol as intercalation agent via ultrasonic-assisted liquid phase intercalation process followed by wet ball milling，spray drying，cyclone separation and calcination. Its microstructure was characterized. The waterborne epoxy interior wall ceramic-like coating was prepared from the prepared coal-based kaolin and was compared with the similar products on the market. Its properties was measured by whiteness meter，reflectivity measuring instrument，ultraviolet lamp irradiation，cold-hot cycling test and abrasion instrument. The results showed that the morphology，particle size and whiteness of the coal-based kaolin prepared by ultrasonic-assisted liquid-phase intercalation process are similar to that of the titanium dioxide，and superior to that of the similar products on the market. Using the prepared coal-based kaolin with titanium dioxide at a mass ratio of 4∶6 in coating system，the synergistic effect is achieved. It is revealed that the synergy is superior to the titanium dioxide in terms of whiteness，covering power，UV resistance，dry rubbing resistance and cold-hot cycle，which can significantly reduce the cost of coatings production.
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