Ultraviolet (UV) radiation is closely related to people’s lives, but excess UV exposure has led to a series of problems. UV protection technology plays a vital role in our life. The most commonly adopted UV protection technology is to use UV-absorbing materials to make protective coatings, including sunscreen cream for human skin and sunscreen coating for materials. Conventional organic UV-protective coatings have low stability and are sensitive to heat, while inorganic UV-protective coating with highly efficient UV-protective performance usually need high processing temperatures and exhibit low transparency. Here, we report a Ti-PEG-Si cross-linked inorganic–organic hybrid material, which exhibits good UV-absorbing performance. By using these UV-absorbing materials, an efficient transparent UV-absorbing coating could be easily prepared at room temperature (298 K). The UV-absorbing coating is mainly composed of titanium and silicon connected by PEG200. PEG200 as a cross-linker can improve the UV-absorption performance of the coating and increase its visible light transmittance. At the same time, the existence of PEG200 can effectively increase the stability and elasticity of the coating and maintain its mechanical properties after UV irradiation. Furthermore, the coating could maintain highly UV-protective performance and could be transparent even after thermal treatment at high temperature (973 K). From this point of view, the hybrid materials have considerable application potential in next-generation UV protective coatings, especially with their utilization in heat-sensitive substrates or under high-temperature conditions.

中文翻译：

---

含钛杂化低聚物制备高效的紫外线防护透明涂层

紫外线（UV）辐射与人们的生活息息相关，但是过度的紫外线暴露导致了一系列问题。紫外线防护技术在我们的生活中起着至关重要的作用。最常用的紫外线防护技术是使用吸收紫外线的材料制成防护涂层，包括用于人体皮肤的防晒霜和用于材料的防晒涂层。常规的有机紫外线防护涂料具有较低的稳定性并且对热敏感，而具有高效紫外线防护性能的无机紫外线防护涂料通常需要较高的加工温度并且显示出较低的透明度。在这里，我们报道了一种Ti-PEG-Si交联的无机-有机杂化材料，它具有良好的紫外线吸收性能。通过使用这些紫外线吸收材料，可以在室温（298 K）下轻松制备有效的透明紫外线吸收涂层。紫外线吸收涂层主要由钛和通过PEG200连接的硅组成。PEG200作为交联剂可以改善涂层的紫外线吸收性能，并提高其可见光透射率。同时，PEG200的存在可以有效地增加涂层的稳定性和弹性，并在紫外线照射后保持其机械性能。此外，该涂层即使在高温（973 K）热处理后仍可以保持高度的紫外线防护性能，并且可以保持透明。从这个角度来看，杂化材料在下一代紫外线防护涂料中具有巨大的应用潜力，