The invention discloses an environment-friendly
flame-retardant
polyurethane foaming material for a combined bumper and a preparation method of the
polyurethane foaming material. The environment-friendly
flame-retardant
polyurethane foaming material for the combined bumper is prepared from the components of
acetonitrile polyester and a mixture according to a
mass ratio of 1:1.5, wherein the mixture comprises the following components in parts by
mass: 50-55 parts of
polyester 4110, 55-58 parts of polyether 982, 300-400 parts of glass fibers, 25-28 parts of polyether 403, 3.0-3.5 parts of
silicone oil, 1.3-1.8 parts of a catalyst A33, 2.0-2.5 parts of a curing agent HP110, 3.5-4.0 parts of water and 38-42 parts of a
flame retardant DMMP, wherein the
silicone oil is
silicone oil AK-8801. The preparation method comprises the following steps: adding the mixed components into a reactor to carry out a mixed reaction, stirring at the speed of 130-150
revolutions per minute for 4-5 hours so as to obtain the mixture; uniformly mixing the
acetonitrile polyester and the mixture according to the
mass ratio of 1:1.5, thereby obtaining the environment-friendly flame-retardant polyurethane foaming material for the combined bumper. With the adoption of the materials and the method, the prepared environment-friendly flame-retardant polyurethane foaming material for the combined bumper is flame-retardant, high-temperature-resistant, high in flame-retardant property, high in strength, long in service life and
environmentally friendly.