这项发明属于功能涂层和薄膜技术领域，提供了一种白色涂料材料、智能热致变色涂料材料和一种涂层。该白色涂料材料包括10 wt% ∼ 70 wt% 的空心玻璃微珠和30 wt% ∼ 90 wt% 的树脂；智能热致变色涂料材料包括10 ∼ 70份重量的空心玻璃微珠，30 ∼ 90份重量的树脂和0.5 ∼ 5份重量的可逆热致变色微胶囊。由于HGBs的丰富多级空腔结构和聚合物的理想固有特性，涂层在太阳光谱范围内的平均反射率高达∼0.96，长波红外辐射率可高达∼0.95。光学性能、白度、遮盖力等方面均优于基于二氧化钛的传统白色涂料材料。不仅无毒、环保、成本低，而且薄膜还具有明显的降温效果。添加少量可逆热致变色微胶囊的涂层可以随着环境温度的变化自由切换至超白色和彩色。因此，实现了对太阳加热的智能调节和被动辐射降温。

The present invention belongs to the technical field of functional coatings and thin films, and provides a white coating material, an intelligent thermochromic coating material and a coating layer. The white coating material comprises 10 wt% ∼ 70 wt% hollow glass beads and 30 wt% ∼ 90 wt% resin; The intelligent thermochromic coating material comprises 10 ∼ 70 parts by weight of hollow glass beads, 30 ∼ 90 parts by weight of resin and 0.5 ∼ 5 parts by weight of reversible thermochromic microcapsules. Due to the rich multi-level cavity structure of HGBs and the ideal inherent characteristics of the polymer, the average reflectivity of the coating layer in the solar spectrum range is as high as ∼0.96, and the long-wave infrared emissivity can be as high as ∼0.95. The optical properties, whiteness, hiding power, etc. are better than traditional white coating materials based on titanium dioxide. Not only is it non-toxic, environmentally friendly, and low in cost, but the film also has an obvious cooling effect. The coating layer added with a small amount of reversible thermochromic microcapsules can switch freely between ultra-white and color as the ambient temperature changes. Therefore, intelligent adjustment of solar heating and passive radiative cooling is achieved.