| abstract |
A kind of super-high solid content aqueous polyurethane, adhesive including the aqueous polyurethane and preparation method thereof, the super-high solid content waterborne polyurethane resin is to contain the nonionic dihydroxylic alcohols of long ethoxy side chain as main hydrophilic segment, use polycaprolactone diols and polypropylene glycol as soft segment, it is prepared, solid content is up to 95% or more；By waterborne polyurethane resin of the present invention and other suitable additives mixture, obtained water-based polyurethane adhesive, with excellent wet-hot aging performance and mechanical performance, use glue film made of water-based polyurethane adhesive, intensity reaches 120N/50mm~180N/50mm, after the 4 damp and hot weatherability recycled tests, glue film does not have any alice and comes unglued, and peel strength reaches 90N/50mm~130N/50mm. |