反射隔热多彩涂料的制备及性能探讨

Preparation and Property of Waterborne Multicolor Decorative Thermal Reflective Coatings

以现有纯色反射隔热涂层的制备工艺为基础,对水性多彩涂料进行改进,包括特殊颜、填料的使用及层结构的设计,讨论了基材处理、底涂、色点、颜料等诸多因素对涂层性能的影响,并讨论了改进罩面体系对多彩涂层的重要性;经改进后的多彩仿石涂层体系被赋予了反射隔热性能,其太阳光反射比、近红外反射比、沾污后太阳光反射比下降率均可符合标准JGJ/T 359—2015建筑反射隔热涂料应用技术规程的相关要求,进一步为水性多彩涂料的功能化和拓展使用提供了空间。

Based on the existing preparation process of single- color solar reflective coating, the waterborne multicolor decorative coating is modified. The effect of substrate treat- ment, primer, plots and pigments/fillers on the performance of funetionalized coating is inves- tigated. The modification of topcoat and its effect on the muhieolor coating is also discussed. It shows that the modification can enable the multicolor coating to give solar reflective thermal in- sulation properties. In addition, the decreasing rate of solar reflectivity, near infrared reflectiv- ity and solar reflectivity of coating upon contamination is qualified to the requirements of the standard JGJ/T 359--2015 Technical Specification for Application of Reflective Thermal Insulation Coatings for Buildings, which is helpful for further applications of the functional multi- color coatings.