Hydrophilicity-imparting agent, hydrophilic film forming method, hydrophilic film, and solar panel

摘要

PROBLEM TO BE SOLVED: To provide a novel hydrophilicity adding agent capable of adding high hydrophilicity to an article to be treated and further enhancing light transmissivity of infrared region to a light transmissive material such as a protective cover of a sunlight panel, a hydrophilic coated film forming method, a hydrophilic coated film formed by the hydrophilic coated film forming method and a sunlight panel having the hydrophilic coated film formed on a surface of the protective cover.;SOLUTION: Hydrophilicity is added to an article to be treated by a hydrophilicity adding agent having silicic acid fine particles consisting of silicate or silica and a solvent and the silicic acid fine particles contain at least a small diameter group with most frequent value of 10 nm or less and a large diameter group with most frequent value of 15 to 30 nm and the small diameter group and the large diameter group are blended at weight ratio of 3:1 to 1:5 in the solvent.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT