High-temperature-resistant protective ink and preparation method thereof

The invention relates to the technical field of ink printing, in particular to high-temperature-resistant protective ink and a preparation method and application thereof. The protective ink is prepared from the following raw materials: 36 to 40 parts of a component A, 4 to 6 parts of silicon dioxide, 28 to 32 parts of calcium sulfate crystals, 1.6 to 2.4 parts of rutile titanium, 8 to 12 parts ofPTFE, 11 to 15 parts of talcum powder, 0.7 to 1.2 parts of a leveling agent and 0.7 to 1.3 parts of an antifoaming agent. The prepared protective ink is coated on the surface of glass to be subjectedto hot bending forming, can effectively protect the molten state of the glass in the high-temperature process, can play a role in buffering, reduces mold marks formed by extrusion of a mold on the glass, reduces scratches formed by exposure of the glass, and effectively improves the product processing yield. The protective ink is excellent in high-temperature resistance, can be removed by adoptinga cleaning agent or water,