High-bonding-strength and antibacterial diatom mud building decoration material and preparation method thereof

Abstract

The invention discloses a high-bonding-strength and antibacterial diatom mud building decoration material and a preparation method thereof. The diatom mud building decoration material comprises the following components in parts by weight: 0.5-20 parts of 60-400-mesh lignin or lignin derivatives, 80-99.5 parts of diatom mud powder materials and 80-120 parts of water. The preparation method comprises the following steps: filtering lignin or lignin derivatives by using a 1.5% NaOH solution to remove impurities, adjusting the pH value of filter liquor to agglutinate and deposit lignin, drying, grinding, screening by a sieve, and uniformly mixing purified lignin or lignin derivatives with the diatom mud powder materials to obtain modified diatom mud powder materials; and mixing the modified diatom mud powder materials with the water according to a mass ratio of 1 : (0.8-1.2) to obtain the high-bonding-strength and antibacterial diatom mud building decoration material. According to the high-bonding-strength and antibacterial diatom mud building decoration material and the preparation method thereof, the raw materials are low in cost, the bonding and antibacterial performances of the diatom mud material can be effectively improved, the safety and environmental protection are achieved, and the process is simple and feasible.

Description

technical field [0001] The invention relates to a building material for indoor use, in particular to a diatom mud building decoration material with high bonding strength and antibacterial properties and a preparation method thereof. Background technique [0002] Diatomaceous earth is a natural substance deposited by aquatic plankton - diatoms millions of years ago. It is light and soft in texture. There are countless tiny holes on the surface of the particles, and the specific surface area can reach 65m2 / g. This porous structure similar to activated carbon endows diatomaceous earth with strong physical adsorption properties. The diatom mud material prepared with diatomite as the main raw material can absorb harmful substances such as formaldehyde and aromatic hydrocarbons in the air through its developed pore structure, and has the effect of purifying the indoor air; it can also absorb and release the harmful substances in the air. Moisture, adjust the indoor air humidity, ...

AI Technical Summary

Problems solved by technology

However, nano-mineral whiskers and nano-composite materials are expensive, and they are prone to agglomeration during the dispersion process, resulting in a decrease in antibacterial performance. Therefore, there are high thresholds in terms of large-scale use of products and preparation and construction process requirements.

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