| abstract |
The invention provides a liquid reactive polyurethane adhesive, which comprises a polyurethane prepolymer, wherein the polyurethane prepolymer is isocyanate group-terminated, and the polyurethane prepolymer is obtained by a polymerization reaction, and the reaction monomer of the polymerization reaction is It contains a polyisocyanate, a polyol, a stabilizer, a catalyst and a hydrophobic filler. The functionality of the polyisocyanate is 2.4 to 3, the molecular weight of the polyol is 1000 to 8000, and has hydrolysis resistance, the stabilizer has a structure as shown in formula (I), and the catalyst has a structure as shown in formula (II). Structure, each symbol in formula (I) and formula (II) is as defined in the specification. Thereby, the liquid reactive polyurethane adhesive of the present invention has good adhesive strength and non-toxic effects through different components and formulations, which is beneficial to be used as an adhesive for structural woodworking. |