Semi-gloss nickel plating solution additive, preparation method thereof and application of semi-gloss nickel plating solution additive in electroplating

The invention relates to a semi-gloss nickel plating solution additive and a preparation method and application thereof in electroplating, and the semi-gloss nickel plating solution additive comprises sodium acetate, sodium salicylate, polyethylene glycol 400 and/or polyethylene glycol 400, 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate. The cleaning agent is prepared from 1, 4-butynediol, 2-methyl-3-butyne-2-amine, sodium dihexyl sulfosuccinate and/or isomeric alcohol polyoxyethylene ether, sodium benzoate, formaldehyde and chloral hydrate. The semi-bright nickel plating solution additive is used in an electronickelling process, a prepared semi-bright nickel plating layer is uniform and has good dispersion performance, the plating layer generates a wide current density range, the potential difference reaches up to 120-180 mv, the semi-bright nickel plating layer is low in porosity, few in spots, fine and bright and has high corrosion resistance, the protection performance of the plating layer is improved