▎ 摘　　要

NOVELTY - Preparation of composite material involves adding 1 pt. wt. graphene oxide and 1-5 pts. wt. reducing agent to 100-1000 pts. wt. deionized water, ultrasonically dispersing for 20-30 minutes, sealing, heating to 90-120 degrees C for 12-24 hours to obtain graphene hydrogel, replacing graphene hydrogel with deionized water for 3-8 times, removing excess water to obtain graphene hydrogel block, adding graphene hydrogel block to aqueous epoxy resin, stirring, adding curing agent, uniformly stirring and curing. USE - Preparation of composite material for aqueous adhesive and floor paint (all claimed). ADVANTAGE - The preparation method is simple, short, and economical and avoids the use of expensive freeze-drying equipment or supercritical carbon dioxide extraction equipment.