The invention relates to a method for preparing a
graphene dispersion liquid by utilizing a pyrenyl
benzoic acid polyether ester parent
reagent. The method comprises the steps: with methoxy
polyethylene glycol, p-
aminobenzoic acid and 1-pyrenylboronicacid as raw materials, carrying out
esterification reaction to obtain p-
aminobenzoic acid polyether ester of a hydrophilic
long chain, then introducing HBr which is reacted with the 1-pyrenylboronicacid to prepare 3, 5-dibromo
benzoic acid methoxy
polyethylene glycol, and carrying out reaction on the 3, 5-dibromo
benzoic acid methoxy
polyethylene glycol and the pyrenylboronicacid to synthesize amphoteric (hydrophilic and oleophylic)
graphite remover; and dissolving the compound and
graphene in a H2O / Et solution, carrying out twice ultrasonic treatment, standing, and carrying out
centrifugation to obtain the stable a
graphene dispersion liquid. With the adoption of the method, as the graphene does not need
oxidation reduction, the destructive effect on a graphene structure is very small, and the unique electric and thermal conductivities of the graphene can be fully exerted; as the prepared dispersion liquid has good aqueous
phase stability, an effective way is provided for the application of the graphene in the field of composites.