▎ 摘　　要

NOVELTY - A flame retardant (I) comprises graphene bromide and antimony trioxide powder particles. The antimony trioxide powder particles are grafted onto the graphene bromide by chemical bonding. USE - Flame retardant used in polymeric materials (claimed). ADVANTAGE - The flame retardant provides stable performance, better dispersion in the polymeric matrix, reduces the pollution and is environmentally-friendly. DETAILED DESCRIPTION - The flame retardant of formula (I) comprises graphene bromide and antimony trioxide powder particles. The antimony trioxide powder particles are grafted onto the graphene bromide by chemical bonding.