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    • 1. 发明申请
    • ANTIREFLECTIVE SILICA COATINGS BASED ON SOL-GEL TECHNIQUE
    • 基于SOL-GEL技术的抗反射硅胶涂层
    • WO2013019770A1
    • 2013-02-07
    • PCT/US2012/048932
    • 2012-07-31
    • INTERMOLECULAR, INC.KUMAR, NitinKALYANKAR, Nikhil, D.SUN, Zhi-Wen
    • KUMAR, NitinKALYANKAR, Nikhil, D.SUN, Zhi-Wen
    • B32B5/16
    • C09D183/04B05D5/06C03C17/009C03C2217/425C03C2217/732C03C2218/113C08L83/04C23C18/00
    • Methods and compositions for forming durable porous low refractive index coatings on substrates are provided. In one embodiment, a method of forming a porous coating on a substrate is provided. The method comprises coating a substrate with a sol-formulation comprising a silane-based binder, silica-based nanoparticles, and an inter-particle interaction modifier for regulating interactions between the silica-based nanoparticles and annealing the coated substrate. Porous coatings formed according to the embodiments described herein demonstrate good optical properties (e.g., a low refractive index) while maintaining good mechanical durability due to the presence of the inter-particle interaction modifier. The inter- particle interaction modifier increases the strength of the particle network countering capillary forces produced during drying to maintain the porosity structure.
    • 提供了在基板上形成耐久的多孔低折射率涂层的方法和组合物。 在一个实施方案中,提供了在基材上形成多孔涂层的方法。 该方法包括用包含硅烷基粘合剂,二氧化硅基纳米颗粒和颗粒间相互作用改性剂的溶胶制剂涂覆基材,以调节二氧化硅基纳米颗粒之间的相互作用并退火涂覆的基材。 根据本文所述的实施方案形成的多孔涂层由于存在颗粒间相互作用改性剂而保持良好的机械耐久性,表现出良好的光学性能(例如,低折射率)。 颗粒间相互作用调节剂增加了颗粒网络抵抗干燥期间产生的毛细管力的强度,以保持孔隙结构。