本发明属于功能涂料和薄膜技术领域，提供 了一种不含钛白粉的白色涂料、一种智能温变涂 料及一种涂层，不含钛白粉的白色涂料包括 1 0 w t％‑7 0 w t％的空心玻璃微珠和3 0 w t％‑ 90wt％的树脂；智能温变涂料包括空心玻璃微珠 10‑70份、树脂30‑90份、可逆感温变色微胶囊 0 .5‑5份。得益于HGBs丰富的多级空腔结构和聚 合物本身理想的固有特性，不含钛白粉的涂层在 太阳光谱范围内的平均反射率高达～0 .96，长波 红外发射率可达～0 .95，在光学性能、白度、遮盖 力等方面均优于传统的基于钛白粉的白色涂料， 不仅无毒、环保、成本低，而且还具有明显的降温 效果。加入少量的可逆变色微胶囊的涂层可随着 环境温度的变化在超白和彩色之间自由切换，实 现了在太阳能加热和被动辐射冷却之间的智能 调节。

The present invention belongs to the field of functional coatings and film technology, and provides a titanium dioxide-free white coating, an intelligent temperature-changing coating, and a coating. The titanium dioxide-free white coating comprises 10 wt%-70 wt% of hollow glass microspheres and 30 wt%-90 wt% of resin. The intelligent temperature-changing coating includes 10-70 parts of hollow glass microspheres, 30-90 parts of resin, and 0.5-5 parts of reversible thermochromic microcapsules. Benefiting from the rich multi-level cavity structure of hollow glass microspheres (HGBs) and the ideal inherent properties of the polymer, the titanium dioxide-free coating exhibits an average reflectance of approximately 0.96 within the solar spectrum and a long-wave infrared emissivity of approximately 0.95. It outperforms traditional titanium dioxide-based white coatings in terms of optical properties, whiteness, and coverage. The coating is non-toxic, environmentally friendly, cost-effective, and has a significant cooling effect. By adding a small amount of reversible thermochromic microcapsules, the coating can switch freely between super white and colored states with changes in environmental temperature, achieving intelligent regulation between solar heating and passive radiative cooling.