▎ 摘　　要

NOVELTY - High-strength room-temperature self-repairing polyurea coating material molecular structure comprises hemithioacetal group and urea group. The high-strength room temperature self-repairing polyurea coating material molecular structure is compound (I). USE - Used as high-strength room-temperature self-repairing polyurea coating material. ADVANTAGE - The polyurea coating material molecular structure: utilizes dynamic reversible hemithioacetal groups and urea bond groups to achieve rapid room temperature self-repairing of polyurea materials; and utilizes phase separation to improve the mechanical properties of room-temperature self-repairing polyurea materials. DETAILED DESCRIPTION - High-strength room-temperature self-repairing polyurea coating material molecular structure comprises hemithioacetal group and urea group. The high-strength room temperature self-repairing polyurea coating material molecular structure is compound of formula (I). n, m, R, R1 and R2 = not defined; An INDEPENDENT CLAIM is also included for preparing high-strength room temperature self-repairing polyurea coating material molecular structure comprising (i) stirring the mercapto compound with a functionality of greater than or equal to2 and aldehyde compound with a functionality of greater than or equal to2 in a solvent in a certain proportion until the viscosity no longer increases to obtain aldehyde group-terminated polyhemithioacetal precursor, (ii) stirring the amino compound with functionality of greater than or equal to2 and an isocyanate compound with a functionality of greater than or equal to2 in a solvent in a certain proportion until the viscosity no longer increases to obtain amino-terminated polyurea precursor, (iii) mixing the precursor solutions obtained in step (i) and step (ii), stirring and reacting for 1 hour, pouring into a mold, and volatilizing the solvent to obtain polyurea material with self-repairing function at room temperature, (iv) dispersing graphene oxide in a solvent, mixing with the precursor solutions obtained in steps (i) and (ii), stirring and reacting for 1 hour, and spraying on the surface of the substrate with a spray gun to obtain graphene oxide/polyurea composite anti-corrosion coating material with self-healing function at room temperature, and (v) dispersing graphene in a solvent, mixing it with the precursor solutions obtained in steps (i) and (ii), stirring and reacting for 1 hour, pouring it into a mold, and volatilizing the solvent to obtain graphene/polyurea composite conductive material with self-healing function at room temperature.