▎ 摘　　要

NOVELTY - Preparing graphene oxide three dimensional printing ink, comprises ultrasonically dispersing graphene oxide and cross-linking agent in solvent to prepare solution, then mixing obtained graphene oxide solution and cross-linking agent solution, then carrying out chemical cross-linking reaction, centrifuging the obtained reaction liquid, removing the supernatant to obtain final product, where the graphene oxide is obtained by oxidizing natural flake graphite powder by a modified Hummers method, the cross-linking agent is potassium ion, sodium ion, magnesium (II) ion, copper (II) ion, calcium (II) ion, zinc (II) ion, nickel (II) ion, cobalt (III) ion, iron (III) ion, aluminum (III) ion, tin (IV) ion, titanium (IV) ion or manganese (IV) ion, the solvent is water or alcohol, where the water is mineral water, purified water or deionized water, and the alcohol is ethanol, butanediol, glycerol, galactal, xylitol or ribitol. USE - The printing ink is useful for printing graphene oxide flexible stent or graphene oxide three-dimensional aerogel stent (claimed). DETAILED DESCRIPTION - Preparing graphene oxide three dimensional printing ink, comprises ultrasonically dispersing graphene oxide and cross-linking agent in solvent to prepare solution, then mixing obtained graphene oxide solution and cross-linking agent solution, then carrying out chemical cross-linking reaction, centrifuging the obtained reaction liquid, removing the supernatant to obtain final product, where the graphene oxide is obtained by oxidizing natural flake graphite powder by a modified Hummers method, the cross-linking agent is potassium ion, sodium ion, magnesium (II) ion, copper (II) ion, calcium (II) ion, zinc (II) ion, nickel (II) ion, cobalt (III) ion, iron (III) ion, aluminum (III) ion, tin (IV) ion, titanium (IV) ion or manganese (IV) ion, the solvent is water or alcohol, where the water is mineral water, purified water or deionized water, the alcohol is ethanol, butanediol, glycerol, galactal, xylitol or ribitol, and the ratio of graphene oxide, cross-linking agent to solvent is 60 mg:0.03-1 mmol:40 ml. An INDEPENDENT CLAIM is also included for use of graphene oxide three dimensional printing ink for printing graphene oxide flexible stent or graphene oxide three-dimensional aerogel stent, where the obtained graphene oxide three-dimensional aerogel stent is tested by a German Zwick/Roell 2.5 kN universal material testing machine, when the deformation amount is 60%, then the compressive modulus is 0.42-0.98 MPa.