High-temperature-resistant ceramic diaphragm as well as preparation method and application thereof

The invention relates to the field of ceramic diaphragms, in particular to a high-temperature-resistant ceramic diaphragm and a preparation method and application thereof.The ceramic diaphragm comprises a base membrane and a ceramic coating, and ceramic slurry in the ceramic coating comprises ceramic particles, a high-temperature-resistant adhesive, a high-temperature-resistant adhesive auxiliary, a wetting agent and deionized water; the high-temperature-resistant bonding auxiliary agent is an olefin monomer with an epoxy group; the high-temperature-resistant adhesive and the high-temperature-resistant adhesive auxiliary are added in the preparation process of the ceramic coating, the high-temperature-resistant adhesive contains sulfonic acid groups and ester groups, wettability between the sulfonic acid groups and ceramic is better, cohesiveness of the ester groups is promoted, the diaphragm is high in stability, the high-temperature-resistant adhesive auxiliary contains epoxy groups, and the high-temperatur