High-temperature-resistant hole sealing agent for thermal spraying coating as well as use method and application of high-temperature-resistant hole sealing agent

The invention relates to the technical field of hole sealing, and particularly discloses a high-temperature-resistant hole sealing agent for a thermal spraying coating as well as a use method and application. The high-temperature-resistant hole sealing agent comprises 30%-45% of epoxy resin, 30%-45% of cubic boron nitride dispersion liquid, 5%-10% of nano ceramic composite filler and 10%-15% of solvent. Wherein the nano ceramic composite filler is a mixture of nano silicon dioxide and nano titanium dioxide. The high-temperature-resistant hole sealing agent for the thermal spraying coating has good molten zinc corrosion resistance, can be rapidly cured in a low-temperature environment of 100-120 DEG C, is particularly suitable for sealing the thermal spraying coating of a hot galvanizing zinc pot sink roller, can avoid the influence of high-temperature curing on the precision of the sink roller after machining, and has the advantages of high sealing performance, high sealing performance and the like. And the m