Preparation method for resin with spraying-free metal effect

The invention relates to a preparation method for a resin with a spraying-free metal effect. The method comprises the following steps of: chemically coating and modifying an aluminum pigment by adopting a SAN-GMA (Styrene-Glycidyl Methacrylate) copolymer; and adding into each plastic substrate resin according to a certain proportion for blending at a high speed and extruding and granulating with two screws to obtain the resin with the spraying-free metal effect. Compared with the prior art, the method has the advantages that: the coated aluminum pigment has high dispersity on the basis of keeping high metal luster and has extremely high compatibility with the plastic substrate resin, the problem that flow marks are formed easily due to the introduction of the conventional aluminum pigmentinto the plastic substrate is solved effectively, powerful technical support is provided for the development and application of the resin with the spraying-free metal effect, and the like.