Reinforced anti-crack diatom mud material containing PVA (polyvinyl alcohol) fiber and preparation method of material

Abstract

The invention discloses a reinforced anti-crack diatom mud material containing PVA (polyvinyl alcohol) fiber and a preparation method of the material. The diatom mud material is prepared from components in percentage by mass as follows: 15%-35% of diatomite, 20%-40% of heavy calcium, 8%-20% of ash calcium, 8%-20% of quartz sand, 2%-5% of nano titania, 1%-4% of negative ion powder, 0.5%-2.5% of cellulose ether, 0.1%-0.5% of pregelatinized starch and 0.1%-2% of the PVA fiber. The diatom mud material prepared with the method has the functions of regulating humidity, insulating sounds, reducing noise, preventing fire, retarding flame, purifying air, contributing to health and the like.

Description

technical field [0001] The invention relates to an environment-friendly building interior wall material, in particular to a reinforced crack-resistant diatom mud material containing PVA fiber and a preparation method thereof. Background technique [0002] The main raw material of diatom mud is diatomite. Since the surface of diatomite is rich in fine pores and a small amount of mesopores and micropores in the interior, it has a unique multi-level pore structure. The specific surface area of ​​diatomite can reach 65m 2 / g, light and non-toxic, powder bulk density is only 0.34-0.65g / m 3 . Therefore, it has strong adsorption and can be used as filter aid, adsorption, thermal insulation and catalytic carrier material. Since its main component is amorphous silicon dioxide (SiO 2 nH2O), so it also has the advantages of good thermal stability, flame retardancy, acid resistance and corrosion resistance. Thanks to its multi-functional environmental protection function of anti-mo...

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Problems solved by technology

Chinese patent document CN105948675A discloses a kind of heat-reflecting and heat-insulating diatom mud for indoor use. , silicon dioxide, dispersant and thickener, the product has excellent heat reflectivity, antibacterial, waterproof, corrosion resistance and stability, high bonding strength, short curing time, convenient construction and high efficiency; however The redispersible rubber powder used in this method belongs to organic latex powder. This chemical adhesive is firmly bonded, but it is easy to block the micropores and lose the breathing and filtering effect of diatom mud. In addition, it may also release VOC substances such as formaldehyde. Not a true green interior wall material

Chinese patent document CN101700965A discloses an environment-friendly diatom mud wall material powder, wall material and preparation method thereof, the wall material mainly adopts inorganic materials such as diatomite, kaolin, sepiolite, vermiculite powder, etc. The effect is better, but the adhesion performance of inorganic materials is poor, and it is easy to drop powder and fall off

However, the current inorganic adhesives generally have low strength, poor water retention, easy powder removal, and cannot be used alone; while the wood fiber variety is single, easy to absorb water and corrode, and the reinforcement effect is not high enough.

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