Water-repellent and breathable stone-like coating and preparation method thereof

Abstract

The invention provides a water-repellent and breathable stone-like coating, which is prepared from the following raw materials in parts by weight: 90-110 parts of natural quartz sand, 10-13 parts of colloidal silicon dioxide, 6-9 parts of a pure acrylate emulsion, 0.9-1.5 parts of butyl cellosolve, 2-9 parts of an antibacterial agent, 6-111 parts of a silicone acrylic emulsion, 0.15-0.65 part of sodium silicate, 3-9 parts of a thixotropic agent, 8-19 parts of a coalescing agent, 0.3-0.6 part of calcium chloride powder, 0.5-3 parts of a magnesium chloride solution and 20-60 parts of water. The invention further provides a preparation method of the water-repellent and breathable stone-like coating. The water-repellent and breathable stone-like coating has the advantage and positive effects that the water repellency is good, the whitening resistance and the hardness of a film are effectively improved, the air permeability is good, the problems of hollowing and bubbling of the surface of the stone-like coating film can be solved, the initial cracking resistance is good, the bonding strength is high, and the preparation technology is simple and suitable for industrialization.

Description

technical field [0001] The invention belongs to the field of real stone paint research and development, and in particular relates to a water-repellent and air-permeable real stone paint and a preparation method thereof. Background technique [0002] In recent years, thanks to the improvement of people's health and environmental protection concept and the progress of coating technology such as emulsion synthesis, real stone texture coatings have occupied a large market share in the field of exterior wall decoration and protection, gradually replacing stone, ceramic tiles, aluminum-plastic composite panels and other exterior walls. decoration material. Compared with stone, real stone paint has many advantages such as light weight, cheap price, environmental protection and health, and convenient construction. [0003] However, compared with the stone surface, real stone paint is relatively loose, and it is prone to water whitening, softness and other paint film defects after b...

AI Technical Summary

Problems solved by technology

[0003] However, compared with the stone surface, real stone paint is relatively loose, and it is prone to water whitening, softness and other paint film defects after being exposed to rain, which affects the appearance.

On the other hand, due to the thick coating film of the real stone paint on the exterior wall, the surface of the aggregate is relatively tightly wrapped by the polymer emulsion to form a film, so that its air permeability is obviously worse than that of the flat latex paint, which causes the real stone paint finish coating on the exterior wall to easily appear. Empty drum and foaming problem