▎ 摘　　要

NOVELTY - A water-soluble titanate coupling agent modified graphene is prepared by heating expandable graphite at 1100 degrees C for 15 seconds, oxidizing, dispersing in aqueous solvent to concentration of 0.2-4 mg/mL, stirring, and stripping by mechanical vibration or ultrasonic method; adding 1-500% titanate coupling agent and 10-500 times amount of hydrazine hydrate, and heating to react via water bath, hydrothermal method or microwave-assisted method; and filtering, washing repeatedly, and vacuum drying at 60 degrees C. USE - Method for preparing water-soluble titanate coupling agent modified graphene (claimed) for composites and coatings. ADVANTAGE - The graphene is environment-friendly, stable in water, and long-lived.