精细陶瓷（先进陶瓷、先进技术陶瓷） 室内光照环境下半导体光催化材料自洁性能试验方法 水接触角的测量

[中文适用范围]： 本文件规定了在室内照明环境下测定含有室内光活性光催化剂或表面具有室内光活性光催化膜的片状材料的自清洁性能的试验方法。该方法用于测量在室内照明环境下水接触角的变化，水接触角是反映半导体光催化材料自清洁性能的指标之一。本文件不适用于无法保持水滴的渗透性材料和使水滴不透明的粗糙材料。本文件不适用于无法评估由于粘附有机物分解而引起的水接触角变化的材料，因为即使表面是清洁的，水接触角也非常大，或者无法通过将有机物附着在表面来充分增加水接触角。 [外文原描述]： This document specifies a test method for the determination of the self-cleaning performance of sheet-form materials that contain an indoor-light-active photocatalyst or have indoor-light-active photocatalytic films on the surface, under indoor lighting environment. This method is used to measure the change of water contact angle under indoor lighting environment, which is one of the indices reflecting the self-cleaning performance of semiconducting photocatalytic materials. This document is not applicable to permeable materials on which water droplets cannot hold and rough materials which obscure water droplets. This document is not applicable to materials of which the changes in the water contact angle due to decomposition of adhered organic matter cannot be evaluated because even if the surface is clean, the water contact angle is remarkably large or the water contact angle cannot be sufficiently increased by attaching organic matter to the surface.