▎ 摘　　要

NOVELTY - A graphene oxide in-situ polymerization modified double-component polyurethane adhesive comprises components A and B. The component A comprises mixed 5-15 pts. wt. polyether glycol, 30-60 pts. wt. polyether trihydric alcohol, 10-30 pts. wt. inorganic filler, 0.01-20 pts. wt. chain extender A, 0.01-10 pts. wt. bonding accelerator and 0.01-5 pts. wt. pts. wt. water-removing stabilizer. The component B comprises polymerization reaction of 10-60 pts. wt. polyether diol, 5-20 pts. wt. polyether trihydric alcohol, 10-45 pts. wt. diisocyanate, 0.01-10 pts. wt. isocyanate modified graphene, 0.01-20 pts. wt. chain extender B, 0.01-2 pts. wt. antioxidant and 0.01-5 pts. wt. catalyst. USE - The graphene oxide in-situ polymerization modified double-component polyurethane adhesive is used for interface bonding and surface protection between metals, composite materials and polymer materials. ADVANTAGE - The adhesive has bottom-free coating agent, good wear resistance, and high bonding strength and hardness. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene oxide in-situ polymerization modified double-component polyurethane adhesive comprising: mixing polyether trihydric alcohol and polyether glycol into reactor, heating to 100-120degrees Celsius, vacuumizing and removing water for 2 hours, cooling to room temperature, adding chain extender A, inorganic filler, bonding acelerator and water-removing stabilizer, removing air bubbles in vacuum state with pressure of -0.095 to 0.1 MPa, uniformly stirring, using dried argon to remove vacuum, and putting mixture into sealed container to obtain polyurethane adhesive A component; mixing 10 pts. wt. graphene oxide with 30-50 pts. wt. tetrahydrofuran, ultrasonically dispersing in cell crusher under sealing condition for 2 hours, adding 10-20 pts. wt. dicyclohexyl methane diisocyanate and 0.01-10 pts. wt. catalyst, continuously ultrasonically reacting at 30degrees Celsius for 2 hours, centrifuging and washing product with tetrahydrofuran solution, removing unreacted isocyanate, and vacuum oven drying precipitate at 70degrees Celsius for 24 hours to obtain isocyanate modified graphene; and transferring into sealed container to isolate air and moisture, heating polyether glycol, polyether trihydric alcohol and antioxidant to 100-120degrees Celsius, vacuumizing and removing water for 2 hours, cooling to 60-80degrees Celsius, adding diisocyanate and catalyst to react, reacting under argon gas protection to 70-80degrees Celsius for 3 hours, adding isocyanate modified graphene to react for 2 hours, adding chain extender B, reacting for 1.5 hours, using infrared spectrometer to test until isocyanate value is not changed, cooling to room temperature to obtain graphene in-situ polymerization modified polyurethane adhesive B component, transferring into sealed container to isolate air and moisture, and sealing and storing.