Hydrophilic SiO₂/poly(vinyl alcohol) (PVA) coating prepared by solution blended method showed high light transmittance and durable antifogging performance. The effects of SiO₂ content and pH value of SiO₂ suspension on the morphology and properties of hydrophilic coating were studied by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, contact angle test, ultraviolet visible light spectrophotometer, and antifogging test. Results showed that the PVA had good compatibility with nano-SiO₂ because of the formation of Si–O–C chemical bond at the interface between nano-SiO₂ and PVA. When prepared at pH = 7, SiO₂/PVA coatings (SiO₂/PVA mass ratio of 0.8) were hydrophilic, with a water contact angle of 22.9°, and exhibited papilla-like surface features (RMS = 7.6 nm). Polyethylene (PE) samples coated with this SiO₂/PVA film exhibited a light transmittance of up to 90%, between 560 and 700 nm, and remained fog-free for more than 1 month after exposure to water at 60°C (QB/T 4475-2013 standard). Water-resisting and wear-resisting tests revealed that antifogging coatings demonstrated excellent mechanical properties.

溶液共混法制备的亲水性SiO ₂ /聚乙烯醇（PVA）涂料具有较高的透光率和持久的防雾性能。通过傅里叶变换红外光谱，扫描电子显微镜，原子力显微镜，接触角试验，紫外可见光分光光度计和防雾试验研究了SiO ₂含量和SiO ₂悬浮液的pH值对亲水涂层形貌和性能的影响。结果表明，PVA与纳米SiO ₂具有良好的相容性，因为在纳米SiO ₂与PVA的界面上形成了Si–O–C化学键。在pH = 7时制备SiO ₂ / PVA涂层（SiO ₂/ PVA质量比为0.8）是亲水的，水接触角为22.9°，并且表现出乳头状表面特征（RMS = 7.6nm）。涂有该SiO ₂ / PVA膜的聚乙烯（PE）样品在560至700 nm之间显示高达90％的透光率，并且在60°C的水中暴露后保持无雾超过1个月（QB / T 4475-2013标准）。耐水和耐磨测试表明，防雾涂料具有出色的机械性能。