Exterior wall coating and preparation method thereof

Abstract

The invention provides exterior wall coating and a preparation method thereof. The exterior wall coating is prepared from the following components in parts by weight: 41-48 parts of phosphate modified acrylic emulsion, 15-25 parts of pigment and filler, 0.5-0.8 part of sodium dodecyl sulfate, 5-15 parts of jatropha curcas biodiesel, 0.1-0.5 part of an antioxidant, 1.5-2.3 parts of a coalescing agent, 10-18 parts of tween-80, 0.5-1.2 parts of triton X-100 and 40-50 parts of water. The performance of the exterior wall coating is improved by adopting the nonionic surfactant tween-80 and triton X-100 under scientific matching and synergistic effect of the components and the synergistic effect of the jatropha curcas biodiesel and the antioxidant. The exterior wall coating has good ultraviolet ray resistance, weather resistance, chemical corrosion resistance, scrubbing resistance and other performances, and can far meet the requirement of GB / T9755-2001 national standard for synthetic resin emulsion exterior wall coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to an exterior wall coating and a preparation method thereof. Background technique [0002] Coating is a general term for a class of liquid or solid materials that can form a solid coating film with protective, decorative or special properties (such as insulation, anti-corrosion, signs, etc.) on the surface of objects, including oil-based paints, water-based paints and powder coatings. As one of the main materials for home decoration and urban greening, paint occupies a large proportion in modern architectural decoration. With the continuous improvement of people's production and living standards, people's requirements for the decorative performance and safety performance of coatings are also getting higher and higher. [0003] The existing exterior wall coatings have relatively single functions, and the weather resistance, water resistance, chemical corrosion resistance, scrub re...

AI Technical Summary

Problems solved by technology

[0003] The existing exterior wall coatings have relatively single functions, and the weather resistance, water resistance, chemical corrosion resistance, scrub resistance and artificial aging resistance of the coating film are poor. Because the exterior walls of buildings are exposed to sunlight for a long time, their surface temperature The obvious rise will directly affect the temperature of the outer wall, so as to affect the indoor temperature; more importantly, the outer wall is often impacted by rainwater; especially in summer, it often ushers in storms immediately after high temperature exposure. The alternating washing and baptism of the exterior wall by sunlight and rain puts forward higher requirements for exterior wall coatings, causing fading, peeling, and powder falling during long-term use, which cannot meet the needs of exterior wall coatings