Efficient multifunctional environment-friendly zeolite wall material and preparation method thereof

Abstract

The invention relates to an efficient multifunctional environment-friendly zeolite wall material and a preparation method thereof, and belongs to the technical field of building materials. The zeolite wall material comprises the following raw materials in percentage by weight: 45-85% of zeolite powder, 8-35% of OK powder, 0.3-10% of a functional material for catalytic decomposition of VOCs, 0.3-10% of nano-zinc oxide whiskers and / or nano-zinc oxide, 0.5-10% of tourmaline powder and 0.3-8% of a water-retaining agent; wherein the functional material for catalytic decomposition of VOCs comprises one or more of mesoporous nano manganese dioxide, nano manganese dioxide, a graphite-like carbon nitride nano material with a pore structure, a homogeneous and heterogeneous graphite-like carbon nitride nano material and a doped graphite-like carbon nitride nano material. According to the product, environment-friendly function is particularly emphasized, meanwhile, the problems that some zeolite wall materials are prone to yellowing, insufficient in strength and the like after construction are solved, and the product is mainly used for coating the interior wall surface.

Description

technical field [0001] The invention relates to a high-efficiency, multifunctional, friendly and environment-friendly zeolite wall material and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Indoor environmental pollution refers to the long-term accumulation of air pollutants in confined spaces due to the incomplete combustion of decoration materials, furniture, fuels, and the common use of chemicals. Living in this environment for a long time will pose a serious threat to human physical and mental health, and formaldehyde is one of the most harmful pollutants. According to the investigation of indoor formaldehyde content by a large number of scholars, it is found that the average mass concentration of formaldehyde in the living environment in most areas is about 0.08-0.84mg / m3, which has already exceeded the limit of 0.10mg / m3 in my country's indoor air quality standards, and even new house decoration in s...

AI Technical Summary

Problems solved by technology

Ash calcium powder (including calcium oxide powder and calcium hydroxide powder) tends to cause yellowing of the wall coating film, and even uneven local yellowing may occur, making the zeolite wall material lose its decorative function; Calcium-based, its strong alkalinity leads to serious "fading" of pigments, and the mechanical strength of its solidified material is relatively low, so when the dosage is low, it is often necessary to add other gel materials to meet the strength standard, and if the dosage is increased The hidden dangers such as yellowing and "discoloration" of the coating film are correspondingly more serious

[0005] CN106495569A patent application is a zeolite wall material powder product prepared separately from the base material and the fabric. No other functional materials except zeolite are added to the raw material, or the functions of decomposing harmful substances, releasing negative ions and antibacterial are relatively weak

[0007] In addition to 5-15 parts of calcium hydroxide powder, the gel material in the CN111205678A raw material also adds 1-5 parts of composite gel material, and its compressive / bending strength should be acceptable, but it does not consider that the wall coating film is easy to flood Huang and other problems, and no anti-cracking material was added; other functional materials except zeolite in this patent application only added composite antibacterial powder, and the composite antibacterial powder was composed of nano-graphene sheet, nano-titanium dioxide, nano-cerium dioxide and ethanol Composite; the focus of this patent application is on the strengthening of antibacterial properties, other functions such as decomposing formaldehyde and other VOCs may be relatively weak, because graphene itself has no function of decomposing VOCs, and nano-TiO2 needs high-intensity ultraviolet light to be decomposed. , although nano-CeO2 has the effect of decomposing VOCs, it is not very strong, and from the price point of the three, it is not very cost-effective to decompose VOCs. Of course, it is another matter in terms of its use to enhance antibacterial performance.

[0008] In order to improve the strength of zeolite wall materials, some use white cement as the second inorganic gel material together with lime calcium powder, and white cement is Portland cement, which is a hydraulic material, and it cannot pass simple means such as sealing after adding water to form a slurry. Prolonging its solidification time will bring inconvenience to the actual construction, and the material containing white cement needs to be moisturized and maintained theoretically after construction

[0009] There is also the use of increasing the content of latex powder to enhance the mechanical strength of the zeolite wall material, which will undoubtedly affect the environmental protection and air permeability of the wall material, making it difficult to exert the original performance of the zeolite and other functional materials.

[0010] Zeolite itself has the effect of adsorbing VOCs such as formaldehyde, but the effect of decomposing VOCs is very limited, and the amount of negative ions released by it is even more limited. Therefore, it is extremely necessary to add suitable functional materials to zeolite wall material powder products