Ecological environment-friendly sepiolite functional wall material and preparation method thereof

Abstract

The invention discloses an ecological environment-friendly sepiolite functional wall material. The wall material is prepared from the following raw materials in parts by weight: 5-35 parts of sepiolite, 0.1-5.0 parts of surfactant, 10-50 parts of inorganic mineral filler, 5-40 parts of a gelling material, 0.5-5.0 parts of functional additives, 0.5-5.0 parts of an antimildew antibacterial material,5-25 parts of titanium dioxide, 0.1-5.0 parts of pigment and 0.2-5.0 parts of cellulose. The preparation method comprises the following steps: (1) preparing an aqueous solution having a concentrationof 1 percent from the surfactant, stirring the high-purity sepiolite in an electrical heating variable-frequency dispersing machine, completely and uniformly spraying the aqueous solution to the surface of the sepiolite, increasing the temperature in a tank, drying until the moisture is lower than 5 percent, and filtering through a 120-mesh vibrating screen to obtain modified sepiolite; (2) stirring the functional additives, antimildew antibacterial material, titanium dioxide, pigment and cellulose into a high-speed mixer, and stirring the modified sepiolite, inorganic mineral filler, gellingmaterial and surfactant in a stirring container; and (3) adding clear water into a drum in 0.9 time mass of the powder, pouring the wall material powder into the water, and dispersing the powder withthe high-speed stirrer into paste. The ecological environment-friendly sepiolite functional wall material has high adsorption capacity on harmful gases.

Description

technical field [0001] The invention relates to a decorative wall material for building interior walls, in particular to an ecological and environment-friendly sepiolite functional wall material. Background technique [0002] Sepiolite belongs to clay-like inorganic mineral materials. It is a kind of hydrous magnesium-rich silicate with layered chain fiber structure. It is formed by hydrothermal alteration of basaltic glass, volcanic deposits or clay. The general chemical formula is Mg 8 (OH 2 ) 4 [Si 6 o 15 ] 2 (OH)·8H 2 O. The appearance of sepiolite is off-white, with strong adsorption performance, unique crystal structure and excellent ion exchange performance. Sepiolite has a special pore structure, and its chain structure contains small units of layered structure, which makes sepiolite have the largest specific surface area among clay minerals, and the total theoretical internal and external specific surface area is as high as 900 m 2 / g, but the existence of g...

AI Technical Summary

Problems solved by technology

At the same time, the specific surface area of ​​uncalcined purified diatomite is generally 40-80 m 2 / g, but there are problems of darker color and poor wall effect. Therefore, most diatom mud manufacturers use calcined diatomaceous earth

After diatomite is added with flux and calcined at high temperature, the pores collapse, and the specific surface area is basically 0-2 m 2 / g, the adsorption effect is greatly reduced