高速铁路新材料

制备基于有机氟改性丙烯酸树脂、表面功能化纳米二氧化硅及六亚甲基二异氰酸酯交联体系的透明耐候疏水涂层，测试其透光率、疏水性、防尘性、耐久性，并考察了涂层对太阳能光伏板电池效率的影响。结果表明：涂层透光率为84%，对水接触角为105°，具有良好的疏水性、滑动性、防尘性及自清洁效果；涂层在4.9 N载荷下擦拭2 000次，对水接触角仍大于90°；人工加速老化3 000 h后，对水接触角变化较小，说明其具有较好的耐久性；在光伏电池板喷涂该涂层后，电池效率提升1.9%。

A transparent weather-resistant hydrophobic coating based on an organic fluorine-modified acrylic resin, surface-functionalized nano-silicon dioxide, and a hexamethylene diisocyanate crosslinking system was prepared. Its light transmittance, hydrophobicity, dust resistance, and durability were tested, and the effect of the coating on the efficiency of solar photovoltaic panel cells was investigated. The results show that the coating has a light transmittance of 84% and a water contact angle of 105°, exhibiting excellent hydrophobicity, slidability, dust resistance, and self-cleaning performance; After 2 000 wiping cycles under a 4.9 N load, the water contact angle of the coating is still greater than 90°; After 3 000 h of artificial accelerated aging, the change in water contact angle is small, indicating good durability; After spraying this coating on photovoltaic panels, the cell efficiency is increased by 1.9%.