Environment-friendly waterproof coating and preparation method thereof

Abstract

The invention relates to environment-friendly waterproof coating and a preparation method thereof. The coating comprises two parts: a component A, namely a superhydrophobic material, and a component B, namely a coating composition, wherein the component A, namely the superhydrophobic material, is prepared from the following components in parts by mass: 15 to 25 parts of graphene, 2.5 to 6 parts of a water-soluble cationic surfactant, 55 to 75 parts of a sodium silicate solution, 10 to 15 parts of 10% NaOH, 25 to 45 parts of a silanizing reagent and 8 to 15 parts of deionized water; the superhydrophobic material is obtained by performing silanizing treatment on the surface of the graphene by an electrochemical lamination method; the component B, namely coating composition, is prepared from the following components in parts by mass: 20 to 30 parts of lignin, 20 to 30 parts of starch, 16 to 18 parts of diatom ooze, 10 to 12 parts of ash calcium, 11 to 15 parts of ground calcium carbonate, 0.5 to 1 part of a defoaming agent, 0.8 to 1 part of a dispersing agent and 15 to 30 parts of deionized water; and the waterproof coating is prepared by mixing the component A, namely the superhydrophobic material, and the component B, namely coating composition. According to the environment-friendly waterproof coating and the preparation method thereof which are provided by the invention, environment-friendly biomass materials, such as the starch, the lignin, the diatom ooze and the like, are adopted, and the added superhydrophobic material makes up the defect that the diatom ooze and calcium powder absorb moisture easily, so uniform and excellent water resistance of the coating layer is achieved.

Description

technical field [0001] The patent of the invention belongs to the technical field of coatings, and in particular relates to an environment-friendly waterproof coating and a preparation method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection, new coatings such as diatom mud that use biomass as raw materials and do not contain formaldehyde are becoming more and more popular in the market. The unique "molecular sieve" structure of diatom mud can absorb harmful gases in the air and purify the air. The same structure also endows diatom mud with the function of sound absorption and noise reduction, which can absorb or release water as the humidity of the air changes. The role of humidity control; when the temperature rises to 1300 ° C, diatom mud will only appear in a molten state, and will not produce harmful gases such as smoke, so it has good fire resistance and flame retardancy. However, since diatom mud mostly uses...

AI Technical Summary

Problems solved by technology

However, since diatom mud mainly uses inorganic gelling substances as the main bonding material, and the moisture absorption function of molecular sieves, diatom mud coatings in relatively humid environments lose their mechanical resistance and are easily damaged by touch.

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