▎ 摘　　要

NOVELTY - Preparing aqueous electromagnetic shielding coating material, comprises (1) performing the self-polymerization reaction of dopamine hydrochloride to modify carbon nanomaterials to prepare polydopamine modified carbon nanomaterials, and dispersing the obtained polydopamine modified carbon nanomaterials in water to prepare a dispersion, adjusting the pH value of the obtained dispersion to 7 with pH adjuster, to obtain a stable dispersed dispersion, adjusting the pH value of the aqueous anionic polyacrylate emulsion to 7 with a pH adjuster to obtain stable dispersed aqueous anionic polyacrylate emulsion, where the pH value is the pH value at which agglomeration occurs in the composite system of the obtained dispersion and the aqueous anionic polyacrylate emulsion, and (2) blending the stably dispersed dispersion with the stably dispersed aqueous anionic polyacrylate emulsion to obtain a composite emulsion, and coating the obtained composite emulsion to obtain the coating material . USE - The method is useful for preparing aqueous electromagnetic shielding coating material. ADVANTAGE - The aqueous electromagnetic shielding coating material: solves the contradiction of filler dispersibility and interface interaction in the existing solution, to enhance the mechanical property of the coating material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for aqueous electromagnetic shielding coating material.