Superfast-dried hood surface varnish for repairing automobiles and preparation method of varnish

The invention relates to a superfast-dried hood surface varnish for repairing automobiles and a preparation method of the varnish. The varnish comprises the following components in parts by weight: 45-60 parts of modified acrylic resin, 14-40 parts of an organic solvent, 0.01-0.05 part of a drying catalyst, 0.3-0.8 part of a flatting agent, 12-25 parts of a cross-linking curing agent and 0.3-1.2 parts of an anti-aging agent. The preparation method of the superfast-dried hood surface varnish for repairing automobiles comprises the following steps: mixing 1-15wt% of the organic solvent and the anti-ageing agent to obtain an intermediate product a; mixing 3-85wt% of the organic solvent and the flatting agent to obtain an intermediate product b; 3-70wt% of the organic solvent and the drying catalyst to obtain an intermediate product c; adding the modified acrylic resin and all the rest of the organic solvent or 6-70wt% of the organic solvent; adding the intermediate product a, the intermediate product b and the intermediate product c according to the required sequence to obtain a mixture d; adding the cross-linking curing agent resin and all the rest of the solvent; stirring and filtering to obtain a mixture e. When the superfast-dried hood surface varnish for repairing automobiles is used, the mixture e is added into the mixture d. Compared with the prior art, the varnish has the advantages that the varnish is superfast dried, and a varnish film is smooth and flat in appearance, high in hardness and high in luster.