The invention discloses water-based high-barrier
coating liquid and a production method thereof. The water-based high-barrier
coating liquid comprises 0.5-15 parts of a
hydroxy group-containing water-
soluble polymer, 0.1-15 parts of a nanometer
oxide, 0.01-10 parts of
graphene, 0.01-5 parts of an organic
siloxane coupling agent, 0.1-30 parts of 0.1-mol / L diluted
hydrochloric acid and 30-95 parts of a
solvent. According to the water-based high-barrier
coating liquid and the production method thereof, nanometer
oxide particles produced through a
sol-
gel method are used as a small-size
polymerization inhibitor, and are loaded onto the surfaces of the
graphene by means of physical adsorption, and
polymerization among the
graphene can be inhibited, so that the problem of poor
dispersity of thegraphene is solved; and by using cross linking of the nanometer
oxide and the water-
soluble polymer, the synergistic enhanced barrier action of the graphene /
polymer on gas is given full play to. Moreover, a process of the production method of the water-based high-barrier coating liquid is simple and easy to implement, and a produced
film material has good mechanical performance and
package printing performance at the same time, and can be applied to a wide variety of fields of medicines, food, electronic product packaging, encapsulation and the like.