A composite multifunctional sepiolite/diatomite-based environmental protection indoor wall material

Abstract

The invention discloses a composite multifunctional sepiolite / diatomite based environment-friendly interior wall material. The composite functional material is prepared through the following method: (1) weighing the following raw materials in percentages by mass: 30 to 50% of sepiolite, 30 to 50% of diatomite, 10 to 15% of nanometer TiO2 powder and 10 to 15% of nanometer ZnO powder; (2) adding the nanometer TiO2 powder and the nanometer ZnO powder into water, carrying out dispersing under stirring so as to obtain a suspension with a mass concentration of 2 to 4%; (3) adding sepiolite and diatomite into the suspension, carrying out mixing under rapid stirring for 0.5 to 1 h, and carrying out filtering; and (4) subjecting a filtered product to drying, and carrying out calcination at 300 to 400 DEG C for 1 to 2 h, wherein filling materials comprise heavyweight calcium carbonate, ash calcium powder, calcined kaolin and silica sand; and additives comprise a thickening agent, wood fiber, dispersible adhesive powder, a thixotropic lubricating agent and a water reducing agent. According to the invention, by adopting a dip-calcination method, the environment-friendly interior wall material is prepared by loading nanometer TiO2 and nanometer ZnO on the surface of the sepiolite and the diatomite and mixing with the filling materials and the additives under stirring, so the problem of serious agglomeration phenomenon of the nanometer TiO2 and the nanometer ZnO in the environment-friendly interior wall material is effectively solved.

Description

technical field [0001] The invention discloses a composite multifunctional sepiolite / diatomite-based environmental protection indoor wall material, which belongs to the technical field of indoor building materials. Background technique [0002] With the improvement of people's living standards and the enhancement of health and environmental protection awareness, the quality of indoor living environment has been paid more and more attention. In the process of interior wall decoration, people not only pay attention to the beautiful decoration, but also pay attention to the harmlessness and functionality of materials when choosing wall materials. Among them, natural mineral-based environmentally friendly indoor wall materials with multiple functions are becoming more and more popular. first choice. At present, the functions of natural mineral-based environmentally friendly indoor wall materials mainly focus on the three major functions of humidity control, air purification, an...

AI Technical Summary

Problems solved by technology

Due to the large specific surface area and high surface free energy of nano functional powders, it is easy to agglomerate into large particles for the second time, which affects the normal performance of its corresponding functions.

In the mixing process of dry powder, due to the limited stirring force and depth, the dispersion of nano-functional powders is relatively difficult, and there are a lot of agglomeration phenomena, which not only reduces the functionality of environmentally friendly indoor wall materials, but also seriously wastes expensive nano-functional powders. Powder

Usually, in order to achieve a certain degree of functional effect, it is often necessary to add an excessive amount of nano-functional powder, resulting in a substantial increase in product cost

It can be seen that this method of directly adding nano functional powder and dry powder mixing with other components has many defects such as serious agglomeration of nano functional powder, inhibited functionality, large dosage, and high product cost.

In addition, there is another phenomenon that needs to be paid attention to. During the use of environmentally friendly indoor wall materials, because nano-functional powders are not firmly combined with other large-particle components, they are easily scraped by external forces and wind. It falls off, and the nano functional powder particles are extremely fine and difficult to settle, floating in the air for a long time, if inhaled into the human body, it will cause certain harm to health