ABSTRACT

The dynamic water contact performances and drying processes of two commercially available superhydrophilic coatings, QS200, used for glass antifogging, and QS3100, used for the self-cleaning of solar photovoltage panels, both with static contact angles near zero, have been evaluated. We investigated the drying behaviours of both statically and dynamically deposited water droplets on these two coatings by measuring droplet diameters and mass changes, and found that their dynamic water droplet behaviours were substantially different, although their static contact angles were essentially the same. The dynamic behaviour of water droplet impact on the QS200 coating was basically independent on the water droplet height (impact speed), while that on the QS3100 coating changed with droplet height. The drying times of droplets on the QS200 coating, both statically and dynamically deposited, were longer than on the QS3100 coating, although the initial droplet area on the QS200 coated surface was larger.

摘要

已经评估了两种市售的超亲水涂层 QS200（用于玻璃防雾）和 QS3100（用于太阳能光电压板的自清洁）的动态水接触性能和干燥过程，两者的静态接触角都接近于零。我们通过测量液滴直径和质量变化研究了这两种涂层上静态和动态沉积水滴的干燥行为，发现它们的动态水滴行为有很大不同，尽管它们的静态接触角基本相同。水滴对QS200涂层的冲击动力学行为与水滴高度（冲击速度）基本无关，而在QS3100涂层上的动力学行为随液滴高度而变化。QS200 涂层上液滴的干燥时间，