Water-based silica sol gel inorganic zinc-rich primer and preparation method thereof

The invention relates to the field of coatings, and provides a water-based silica sol gel inorganic zinc-rich primer and a preparation method thereof, the product is composed of a water-based silica sol gel solution, a filler, an auxiliary agent and deionized water; and zinc powder is used as another reaction component. In addition, an organosilane polymer is also added, the water-based silica solgel solution and the organosilane polymer are added into deionized water during preparation, the auxiliary agent and the filler are added, a mixture is uniformly dispersed through high-speed shearing, and a base material component is obtained through blending; during construction, the base material component and the zinc powder component are blended in proportion and stirred uniformly, and cleanwater is used for adjusting the construction viscosity for coating. The problems that in the prior art, solvent type inorganic zinc-rich primer is high in VOC, large in coating porosity, thick in coating cracking and poor in a