Preparation method of nano toughened inorganic transparent protective coating

Abstract

The invention relates to the field of inorganic coating, and aims to provide a method for preparing nanometer toughened inorganic transparent protective coating. The method includes weighing various raw components according to set weight percentages; adding methyl silicate, phosphate, nanometer fillers, dispersing agents, surfactants and deionized water into ingredient barrels, and stirring the methyl silicate, the phosphate, the nanometer fillers, the dispersing agents, the surfactants and the deionized water to form mixed slurry; injecting the mixed slurry into nanometer ball mills and grinding the mixed slurry; adding water glass and defoaming agents into dispersion machines, stirring the water glass and the defoaming agents and then adding the ground mixed slurry into the dispersion machines; continuing to stir the water glass, the defoaming agents and the ground mixed slurry to obtain the nanometer toughened inorganic transparent protective coating. The method has the advantages that inorganic coating is toughened by nanometer materials, and accordingly good toughening effects can be realized without deterioration of the mechanical properties (such as the hardness and the abrasion resistance), the water resistance, the aging resistance and the like of coatings; the nanometer materials are stable in performance and can be mixed with the strong-alkalinity inorganic coating without qualitative change; fillers are ground by nanometer sanders, the particle sizes of the fillers can be reduced and are smaller than or equal to 0.2 micrometer, accordingly, the method is favorable for preparing transparent inorganic coatings, the trend of agglomeration of the nanometer fillers can be weakened, and the toughening effects can be effectively realized by the nanometer fillers.

Description

technical field

[0001] The invention relates to a preparation method of a nano-toughened inorganic transparent protective coating, which belongs to the field of inorganic coatings. Background technique

[0002] Inorganic coatings are coatings that use inorganic materials as film-forming substances, mainly silicate (sodium, potassium or lithium salt) water glass inorganic coatings. Compared with the current mainstream organic coatings, they have a series of advantages, such as: 1) Non-combustibility, the temperature resistance of inorganic coatings is particularly good, not only will not burn at a high temperature of 1200 ℃, but also flame retardant; 2) Petrochemical effect, inorganic coatings can chemically react with mineral substrates to form a waterproof, waterproof 3) Air permeability, inorganic coatings are waterproof and highly breathable, so that the water inside the stone building can evaporate freely; at the same time, it has the filtering effect of alkali substance...