Natural building exterior wall coating

Abstract

A natural building exterior wall coating is mixed by raw materials including, by weight, from 120 to 220 parts of white cement, from 200 to 350 parts of lime putty, from 4.2 to 6.9 parts of alum, from 50 to 150 parts of white stone powder, from 0.7 to 1.9 parts of rubber sap, from 0.5 to 1.5 parts of pigment and from 50 to 80 parts of water. Particular preparation method include crushing the white stone powder and the alum; then mixing the white cement with the lime putty, feeding mixture of the cement and the lime putty into a blender, sequentially feeding the crushed white stone powder and the crushed alum into the blender, uniformly stirring the materials in the blender, then adding the rubber sap into the blender and uniformly mixing the materials in the blender; and discharging dry solid after stirring, adding the water and the pigment into the solid and preparing the natural building exterior wall coating finished product. The natural building exterior wall coating has excellent technical performances and is low in cost, the consumed raw materials are natural, non-toxic and harmless, resources can be saved, environments are protected, and the natural building exterior wall coating can be widely applied to exterior coating projects of various buildings.

Description

technical field [0001] The invention relates to the technical field of finishing engineering of building exterior walls, in particular to a building exterior wall paint prepared from natural materials. Background technique [0002] Architectural coatings, as a class in the coatings industry, have increasingly become an important symbol of a country's national living standards. my country's architectural coatings have developed by leaps and bounds in recent years, and have a considerable scale and a certain foundation. Compared with other exterior wall decoration materials, exterior wall coatings have the following advantages: economically, exterior wall decoration is much cheaper than glass curtain walls, decorative stones, aluminum-plastic panels, etc.; there are many types of coatings, and the construction is simple and can be It meets the requirements of different grades of exterior wall decoration; the decoration effect is good, the color is rich and bright, and the col...

AI Technical Summary

Problems solved by technology

[0003] At present, the raw materials used in coatings on the market are mainly water-based resins, nano flame retardants, ammonium polyphosphate, melamine, carbon forming agents, nano pigments, fillers, dispersants and stabilizers. The disadvantages are that there are many chemical components. It is a water-based paint, and the solvent used contains low amounts of formaldehyde and alcohol ether chemical components

Moreover, this kind of product has poor stability, poor water resistance, and surface pollutants can easily cause shrinkage cavities in the coating film.

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