Sealant for hollow glass and preparation method thereof

The invention discloses a sealant for hollow glass and a preparation method thereof, and belongs to the technical field of hollow glass, the sealant comprises the following raw materials by weight: 100 parts of a modified polyurethane prepolymer, 55-65 parts of polyethylene glycol 2000, 145.5-155.5 parts of a reinforcing filler, 0.2-1 part of an antioxidant 245, 0.1-2 parts of tetraisopropyl titanate, and 30-36 parts of a diluent. An isocyanate group of MDI reacts with an alcoholic hydroxyl group on polyether glycol N-220, A-187 modification is further carried out to prepare the modified polyurethane prepolymer, the reaction activities of two isocyanate groups of the polyurethane prepolymer are the same, the crosslinking speed during preparation and curing of the modified polyurethane prepolymer is high, and the curing speed is high. Isocyanate groups are all substituted, so that the isocyanate groups are prevented from curing and foaming, and the curing of the sealant is further accelerated by adding a dilue