Efficient formaldehyde purification water-based sepiolite paint and preparation method thereof

Abstract

The invention discloses efficient formaldehyde purification water-based sepiolite paint which is prepared from, by weight, 15-25 parts of deionized water, 5-25 parts of sepiolite, 0.1-5.0 parts of surface modifying agents, 10-50 parts of inorganic mineral fillers, 0.5-5.0 parts of magnesium aluminum silicate inorganic gel, 0.5-5.0 parts of function additives, 0.5-5.0 parts of anti-mildew and antibacterial materials, 5-25 parts of bonding materials, 5-25 parts of titanium dioxide, 0.1-5.0 parts of pigments and 0.2-1.0 part of cellulose. The preparation method includes the steps: 1) preparing suspension liquid from sepiolite and deionized water, dispersing the suspension liquid at high speed to form gel-like substances, and heating mixture to reach the temperature of 60-70 DEG C, and addingthe surface modifying agents; 2) preparing suspension liquid from magnesium aluminum silicate inorganic gel, and dispersing the suspension liquid to prepare pregel; 3) adding the function additives into the deionized water to stir mixture, adding the inorganic mineral fillers, the titanium dioxide, the sepiolite prepared in the step 1), the magnesium aluminum silicate inorganic gel prepared in thestep 2) and the cellulose to stir mixture, and adding the bonding materials, the anti-mildew and antibacterial materials and the pigments. The paint removes odor and is environmentally friendly, resistant to formaldehyde and excellent in heat storage stability.

Description

technical field [0001] The invention relates to a water-based paint for building interior walls, in particular to a high-efficiency aldehyde-cleaning water-based sepiolite paint. Background technique [0002] Sepiolite is a clay-like inorganic mineral material, β-type, monoclinic crystal system, a natural hydrous magnesium-rich silicate mineral, with a layered chain crystal structure. The general chemical formula is Mg 8 (OH 2 ) 4 [Si 6 o 15 ] 2 (OH) 4. 8H 2 O. The appearance is off-white, and the whiteness varies according to the grade, impurity content and type, generally 30-60%. Because of its surface negative charge and unique silicon-oxygen tetrahedron and magnesium-oxygen octahedral structure, it has polar adsorption properties, rheological properties and ion exchange properties. Compared with traditional non-metallic mineral materials, it is used in air purification, especially in building interiors The field of air purification has broad application prospec...

AI Technical Summary

Problems solved by technology

Domestic functional water-based coating products, such as water-based diatom coatings, use calcined diatom earth as the functional material, but in order to improve the whiteness and hiding power of calcined diatom earth, a flux is added to the original diatom earth for high-temperature calcination. The channels are almost completely collapsed, and the composition is amorphous SiO 2 Mainly, the specific surface area is close to 0, and the structure is bulky. After adding a large amount of adhesive materials such as emulsion, the pores are seriously blocked, and the adsorption effect is difficult to guarantee.