▎ 摘　　要

NOVELTY - Manufacturing air spring plastic base involves: (S1) separately dissolving and dispersing graphene and nylon-66 in organic solvents, stirring and evenly dispersing to get graphene dispersion and nylon-66 solution, pouring the graphene dispersion into the nylon-66 solution, and evenly stirring to obtain a mixed solution; (S2) adding 6-aminocaproic acid to the mixed solution obtained in step (S1), heating at 150-250 degrees C for 3-12 hours under nitrogen protection, refluxing and cooling to obtain modified materials; (S3) blending the modified material obtained in step (S2) with glass fiber and nylon-66, using a high-speed mixer to mix for 1-2 hours, then melting and uniformly mixing at 230-260 degrees C, cooling and granulating to obtain graphene and glass fiber modified nylon-66 material; and (S4) designing the structure of the air spring plastic base, which includes a base unit having a cylinder and an air chamber in the inner center of the cylinder. USE - The method is useful for manufacturing lightweight and high fatigue air spring plastic base. ADVANTAGE - The method can manufacture the air spring plastic base with lightweight and high fatigue, hardness and strength. DETAILED DESCRIPTION - Manufacturing air spring plastic base involves: (S1) separately dissolving and dispersing graphene and nylon-66 in organic solvents, stirring and evenly dispersing to get graphene dispersion and nylon-66 solution, pouring the graphene dispersion into the nylon-66 solution, and evenly stirring to obtain a mixed solution; (S2) adding 6-aminocaproic acid to the mixed solution obtained in step (S1), heating at 150-250 degrees C for 3-12 hours under nitrogen protection, refluxing and cooling to obtain modified materials; (S3) blending the modified material obtained in step (S2) with glass fiber and nylon-66 according to the mass ratio of (60-160):(1000-2000):(2000-5000), using a high-speed mixer to mix for 1-2 hours, then melting and uniformly mixing at 230-260 degrees C, cooling and granulating to obtain graphene and glass fiber modified nylon-66 material; (S4) designing the structure of the air spring plastic base, which includes a base unit having a cylinder and an air chamber in the inner center of the cylinder, where the axial angle between the outer wall of the cylinder and the air chamber is 1-5 degrees , the inside of the air chamber has a two-layer reinforcement rib group structure, each layer of stiffener group is composed of several stiffeners, and a number of reinforcing ribs are further arranged between the outside of the air chamber and the cylinder; and (S5) subjecting the graphene and glass fiber modified nylon-66 material obtained in step (S3) to extruding and injection molding to manufacture the air spring plastic base designed by the step (S4), where the extrusion temperature is 230-280 degrees C, the injection pressure is 70-100 MPa, the injection speed is 30-50 rpm, the back pressure is 2-4. Pa, and the cooling time is 30-60 seconds.