▎ 摘　　要

NOVELTY - Composite dispersant comprises distilled water, nonionic surfactants, anionic surfactants and wetting agents. The nonionic surfactant is amide polymer, and the anionic surfactant is a hydrocarbyl sulfonate compound. The wetting agent includes medium dodecylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyethylene glycol 600, octyl alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate, cetyltrimethylammonium bromide and/or Tween(Carbomer) compounds comprising Tween-20(Polysorbate 20), Tween-40(Polysorbate 40), Tween-60(Polysorbate 60) and Tween-80(Polysorbate 80). The amide polymer is polyvinylpyrrolidone, polyacrylamide and/or polyoxyethylene alkanolamide. The hydrocarbyl sulfonate compounds include dioctyl sodium sulfosuccinate, sodium lauryl succinic monoester sulfonate, sodium dodecyl diphenyl ether disulfonate, disodium lauryl sulfosuccinate monoester and/or fatty alcohol polyoxyethylene ether disodium sulfosuccinate monoester. USE - The composite dispersant is useful in preparing mixed electroplating solution (claimed). ADVANTAGE - The method is simple to operate. The composite dispersant can effectively block or slow down the agglomeration of graphene in the dispersion liquid. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing the composite dispersant; and Mixed electroplating solution.