| abstract |
In the porous article of the present invention, pores on at least one principal surface of a porous body made of an inorganic material are filled with a mixture containing metal oxide particles and alkali silicate, and the filled mixture is composed of zirconium and Covered with a film containing a hydrated compound of silicate. According to this porous article, the surface is excellent in preventing soiling, and is also excellent in alkali resistance and acid resistance. In addition, since the manufacturing process can be performed at room temperature or a relatively low temperature of 100 ° C. or lower, the manufacturing cost can be greatly reduced. |