精细陶瓷(高级陶瓷,高级工艺陶瓷).半导电光催化材料的自清洁性能的试验方法.水接触角的测定

[中文适用范围]： 本国际标准涉及精细陶瓷。本国际标准规定了一种测定含 photocatalyst 或表面涂有 photocatalytic 膜的材料自清洁性能的试验方法，并通常由半导体氧化物（如二氧化钛）制成。该方法用于测量在紫外光照射下的水接触角，这是影响 photocatalytic 材料自清洁性能的一个指标。本国际标准不包括透水性基底、无明显水滴的粗糙表面、高度亲水性、粉末状或颗粒状材料，以及对可见光敏感的 photocatalyst。 [外文原描述]： ISO 27448:2009 deals with fine ceramics. ISO 27448:2009 specifies a test method for the determination of the self-cleaning performance of materials that contain a photocatalyst or have photocatalytic films on the surface, and which are usually made from semiconducting metal oxides such as titanium dioxide. This method is used to measure the water contact angle under illumination with ultraviolet light, which is one of the indices influencing the self-cleaning performance of photocatalytic materials. ISO 27448:2009 does not include water-permeable substrates, rough surfaces which do not have exposed water droplets, highly hydrophobic, powder or granular materials, or visible light-sensitive photocatalysts.