▎ 摘　　要

NOVELTY - Preparing graphene material modified by polyurethane material comprises (i) adding 7-8 pts. wt. mineral oil and 1-2 pts. wt. polyurea to mixer and stirring to obtain urea-based grease, (ii) adding 2-3 pts. wt. sheet-shaped metal powder and 8-10 pts. wt. urea-based grease to mixer and uniformly mixing to obtain grinding media, and (iii) ball-milling 6-8 pts. wt. natural graphite and 4-6 pts. wt. grinding media using ball-mill, pressing for 40-60 minutes, completely in-filtering urea-based grease into the natural graphite layer, ball-peeling, completing peeling, filtering, and collecting solid matter. USE - The method is useful for preparing graphene material modified by polyurethane material. ADVANTAGE - The material has good dispersion performance, good compatibility, high-specific surface area and high-electrical conductivity.