Silicate modified silica sol-based water-based inorganic coating

The invention discloses a silicate modified silica sol-based water-based inorganic coating and a preparation method thereof.The silicate modified silica sol-based water-based inorganic coating is prepared by chemically compounding silicate (sodium silicate and potassium silicate) film forming matter and silica sol through an emulsion blending method on the basis of different film forming mechanisms of silicate and silica sol; and a fibrous structure network with high condensation degree, high tensile strength and good water resistance is constructed. A monomer of silicate in the coating plays a bonding role, colloid particles are promoted to effectively collide to generate inter-particle bonds to form long fine fibrous silicon-oxygen chains and networks, so that a porous polymer skeleton structure is formed; silicate is deposited in a structure of a silica sol inorganic film forming matter, so that silicic acid forms a high-strength gel bridge among colloidal particles of silica sol, rigid interconnected, por