▎ 摘　　要

NOVELTY - Manufacturing graphene-reinforced ultra-light rigid foamed urethane composite panel comprises: laying and installing a front finishing material on a press base mold in the base direction in the press and installing the press left side mold and the press right side mold to the left and right, respectively; preparing a two-component rigid polyurethane foam; stirring graphene having a particle size of 20-50 μ m in a weight ratio of 1-10% in solution-A of the prepared two-component rigid foamed urethane according to condition; stirring a second solution of hard foamed urethane in the same amount as the first solution of hard foamed urethane in a solution in which graphene and first solution of hard foamed urethane are stirred; pouring the solution in which graphene, rigid foamed urethane-A solution and rigid foamed urethane-B solution into a press base mold on a press. USE - The graphene-reinforced ultra-light rigid foamed urethane composite panel is useful for wall construction. ADVANTAGE - The method is economical, saves construction period and labor cost, and is not subject to seasonal and climatic restrictions. DETAILED DESCRIPTION - Manufacturing graphene-reinforced ultra-light rigid foamed urethane composite panel comprises: laying and installing a front finishing material on a press base mold in the base direction in the press and installing the press left side mold and the press right side mold to the left and right, respectively; preparing a two-component rigid polyurethane foam; stirring graphene having a particle size of 20-50 μ m in a weight ratio of 1-10% in solution-A of the prepared two-component rigid foamed urethane according to condition; stirring a second solution of hard foamed urethane in the same amount as the first solution of hard foamed urethane in a solution in which graphene and first solution of hard foamed urethane are stirred; pouring the solution in which graphene, rigid foamed urethane-A solution and rigid foamed urethane-B solution into a press base mold on a press, a front finishing material is installed on it, and a press left side mold and a press right side mold are installed on each of the left and right sides; installing a backside finishing material on the press top plate mold; closing and setting the press upper plate mold on which the backside finishing material is installed; and curing the mold by applying heat to 80-150° C. An INDEPENDENT CLAIM is also included for graphene-reinforced ultra-lightweight rigid polyurethane foam composite panel.