Water-based fluorocarbon antirust coating doped with rare-earth salt polymer microspheres for automobile chassis and preparation method of water-based fluorocarbon antirust coating

Abstract

The invention discloses a water-based fluorocarbon antirust coating doped with rare-earth salt polymer microspheres for an automobile chassis and a preparation method of the water-based fluorocarbon antirust coating. The added rare-earth salt polymer microspheres are prepared by copolymerizing and mixing rare-earth salt with maleic anhydride, hydroxyethyl acrylate and N-vinyl pyrrolidone, and are relatively high in surface reactivity and dispersibility in the subsequent fluorocarbon resin emulsion polymerization process. A rare earth functional group is introduced into a resin body, thus improving the corrosion-inhibition effect of the coating layer and postponing the rusting of the chassis; and moreover, antirust pigment subjected to grinding treatment with ultra-branched polyether emulsion is higher in dispersibility and combination property in a resin system and more excellent in antirust effect. The coating finally prepared based on the preparation method is an environment-friendly product and is higher in adhesive force and better in protecting effect, so the antirust cycle of the water-based fluorocarbon antirust coating is greatly prolonged when compared with that of conventional water-based coating.

Description

technical field [0001] The invention relates to the technical field of water-based antirust coatings, in particular to a water-based fluorocarbon antirust coating doped with rare earth salt polymer microspheres for automobile chassis and a preparation method thereof. Background technique [0002] As the name suggests, the chassis of the car is at the bottom of the car. It has been in a relatively dark environment, and it will be impacted by rain, sand and stones during driving, which will cause damage to the surface, accelerate corrosion, and seriously reduce the service life of the chassis. Therefore, strengthening the car The rust protection of the chassis is very important. [0003] The most direct and effective antirust measure for the chassis is to spray antirust paint on the chassis. The traditional antirust paint for the chassis is mainly oil-based paint. The advantage of oil-based paint is that it forms a thicker coating and has a longer service life, but its fatal ...

AI Technical Summary

Problems solved by technology

"Research on the Performance of New Waterborne Fluorocarbon Anticorrosion Coatings" uses fluorocarbon emulsion as the film-forming base material, composite iron-titanium powder and modified zinc phosphate as the main anticorrosion pigments, and the prepared coating shows good sealing effect and anticorrosion performance , but fluorocarbon resin also has some defects, such as high curing temperature, long curing time, poor adhesion, poor wettability with fillers, high cost, etc., further modification is required to improve its Market application value