Liquid-state reactive polyurethane adhesive

A liquid-state reactive polyurethane adhesive, comprising:

• a polyurethane prepolymer, wherein the polyurethane prepolymer is blocked by an isocyanate group, and the polyurethane prepolymer is obtained by a polymerization reaction, a reactive monomer of the polymerization reaction comprises:
• a polyisocyanate, wherein a functionality of the polyisocyanate is 2.4 to 3;
• a polyol, wherein a molecular weight of the polyol is 1000 to 8000, and the polyol has hydrolysis resistance;
• a stabilizer, wherein the stabilizer has a structure represented by formula (I):
• wherein R1, R2 and R3 are each independently a hydrogen or a monovalent organic group;
• a catalyst, wherein the catalyst has a structure represented by formula (II):
• wherein R4 and R5 are each independently a hydrogen or a alkyl group, n1 and n2 are each independently an integer from 2 to 4;
• and
• a hydrophobic filler;
• wherein a total weight of the reactive monomer is 100 parts by weight, a content of the stabilizer is 0.01 parts to 3 parts by weight, and a content of the hydrophobic filler is 0.5 parts to 5 parts by weight.