High-activity functional diatom mud and preparation method thereof

Abstract

The invention discloses high-activity functional diatom mud and a preparation method thereof. The method comprises the following steps: performing low-temperature anaerobic heat activation treatment on ground and acid-leached second-third-grade diatomite, preparing a diatomite-supported nano zinc oxide composite photocatalytic material by adopting a combination of a sol-gel method and a negative pressure loading method to improve functional properties of the diatom mud, uniformly mixing the above prepared diatomite-based photocatalytic material, white cement, heavy calcium carbonate, talc powder, sand, sierozem, bentonite, dispersible latex powder, polypropylene fibers, polyvinyl alcohol and an antifoaming agent, adding water, and performing stirring to form paste to prepare the functionaldiatom mud. The high-activity functional diatom mud disclosed by the invention has extremely high purification efficiency on indoor air, solves the problems such as powder dropping and poor durability, and ensures rational utilization of the second-third-grade diatomite.

Description

technical field [0001] The invention discloses a high-activity functional diatom mud and a preparation method thereof, relates to a high-activity functional diatom mud used indoors and a preparation method thereof, and belongs to the technical field of indoor wall coatings. Background technique [0002] The problem of environmental pollution has become a major problem facing the whole society and needs to be solved urgently. As the value of outdoor PM2.5 continues to increase, a healthy and environmentally friendly indoor environment is particularly important. At present, people are vigorously studying the coordination between indoor air quality and the environment, and developing New materials for indoor air purification with functions and environmental protection have become a hot spot. Diatom mud is favored by consumers for its safety and environmental protection, rich colors, good functional performance, and strong decoration. As of May 2017, there are more than 500 dome...

AI Technical Summary

Problems solved by technology

Diatom mud is favored by consumers for its safety and environmental protection, rich colors, good functional performance, and strong decoration. As of May 2017, there are more than 500 domestic brand diatom mud manufacturers, but the entire silicon On the one hand, the algae mud industry has not considered the activity of diatomite as a functional filler. Most enterprises use diatomite concentrate as a filter aid or diatomite that has lost pozzolanic activity by high-temperature calcination for diatom mud production. The production cost has been greatly increased, and serious waste of resources has been caused. The second and third grade diatomites have not been effectively utilized

At the same time, it also leads to poor durability and insufficient hardness of diatom mud; on the other hand, no new method has been explored to compound photocatalysts with low-grade diatomaceous earth. The photocatalytic nanoparticles used by most companies are easy to agglomerate and have poor dispersion, so they cannot be better. Loading on diatomite can not achieve the effect of degrading pollutants, often manifested as poor air purification effect, and does not achieve the functional performance advertised in the market, etc.

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