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Diatom ooze coating capable of degrading formaldehyde for indoor decoration

A technology for diatom mud coating and interior decoration, which is applied to coatings, inorganic raw material rayon, etc., can solve problems such as low utilization rate of visible light, and achieve the effects of solving poor degradation effect, improving adsorption capacity, and improving adsorption activity.

Active Publication Date: 2018-11-30
惠州市永盛辉实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The photocatalyst commonly used in existing coatings is TiO 2 ,TiO 2 Photocatalysts have their own limitations. The band gap energy is 3.2eV. Only when ultraviolet light with a wavelength of less than 387.5nm is irradiated on its surface, its electrons can be excited, and the ultraviolet part of sunlight is less than 5%. And the utilization rate of indoor visible light is lower

Method used

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  • Diatom ooze coating capable of degrading formaldehyde for indoor decoration

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Experimental program
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Effect test

Embodiment 1

[0034] A formaldehyde-degradable diatom mud coating for interior decoration, each raw material composition (total mass 100kg): activated diatomite 15%, composite photocatalyst 10%, bamboo charcoal fiber 3%, polyacrylic resin 20%, ethylene-acetic acid Vinyl ester copolymer 10%, carborundum 5%, zinc stearate 0.5%, the balance is water;

[0035] The preparation method of the described activated diatomite is as follows: 100kg of diatomite is added to a ball mill for grinding and pulverizing, adding water to prepare a diatomite solution with a concentration of 30%, adding 45% concentrated nitric acid solution while stirring, and detecting The pH of the diatomite solution is 2.5, stop adding concentrated nitric acid, continue to stir for 15 minutes, measure the pH of the diatomite solution again to be 2.6, let it stand at 35°C for 3 hours, cool to room temperature, filter and wash until neutral, and dry The filter residue is put into a muffle furnace, calcined at 700°C for 5 hours, ...

Embodiment 2

[0044] A formaldehyde-degradable diatom mud coating for interior decoration, each raw material composition (total mass 100kg): activated diatomite 25%, composite photocatalyst 10%, bamboo charcoal fiber 6%, polyacrylic resin 30%, ethylene-acetic acid Vinyl ester copolymer 5%, carborundum 2%, zinc stearate 0.5%, the balance is water;

[0045] Preparation of Activated Diatomite and CeO 2 -WO 3 The preparation of composite photocatalyst is with embodiment 1;

[0046] A kind of preparation method of diatom ooze coating for interior decoration that can degrade formaldehyde, specifically comprises the following steps:

[0047] S1. After mixing the activated diatomite and the composite photocatalyst, add it to the ball mill, and mix it by mechanical extrusion for 5 hours, so that the composite photocatalyst is fully loaded in the activated diatomite layer, thereby reducing the particle size of the diatomite , while increasing the specific surface area of ​​diatomite and composite ...

Embodiment 3

[0050] A formaldehyde-degradable diatom mud coating for interior decoration, each raw material composition (total mass 100kg): activated diatomite 20%, composite photocatalyst 12%, bamboo charcoal fiber 5%, polyacrylic resin 25%, ethylene-acetic acid Vinyl ester copolymer 6%, carborundum 4%, zinc stearate 1%, the balance is water;

[0051] Preparation of Activated Diatomite and CeO 2 -WO 3 The preparation of composite photocatalyst is with embodiment 1;

[0052] A kind of preparation method of diatom ooze coating for interior decoration that can degrade formaldehyde, specifically comprises the following steps:

[0053] S1. After mixing the activated diatomite and the composite photocatalyst, add it to the ball mill, and mix it by mechanical extrusion for 6 hours, so that the composite photocatalyst is fully loaded in the activated diatomite layer, thereby reducing the particle size of the diatomite , while increasing the specific surface area of ​​diatomite and composite ph...

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Abstract

The invention discloses a diatom ooze coating capable of degrading formaldehyde for indoor decoration. The coating is prepared from the following raw materials in percentage by weight: 15-25% of activated diatomaceous earth, 10-15% of a composite photocatalyst, 3-6% of bamboo charcoal fibers, 20-30% of polyacrylic resin, 5-10% of ethylene-vinyl acetate copolymer, 2-5% of emery, 0.5-1.5% of a dispersing agent and the balance water. According to the diatom ooze coating, the composite photocatalyst is fully loaded into activated diatomaceous earth layer lattices through mechanical extrusion mixing, so that the particle size of the diatomaceous earth is decreased, meanwhile, the specific surface area of the diatomaceous earth and the composite photocatalyst is increased, and the adsorption capacity of the diatomaceous earth is improved; then the remaining raw materials loaded with a compound and a diatom ooze coating body are added into a stirrer, uniform stirring is carried out so as to obtain the high-activity diatom ooze coating, the diatomaceous earth adsorbs the formaldehyde to the surface, the composite photocatalyst degrades the formaldehyde, additional water is not required tobe added, the formaldehyde can also be degraded under the indoor condition without ultraviolet light, and therefore the application value is high.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a formaldehyde-degradable diatom mud coating for interior decoration. Background technique [0002] It has become a consensus that environmental pollution will induce pathological changes in the human body. The pathogenic bacteria, PM2.5 fine particles and pathogenic and carcinogenic organic substances permeating the living environment have attracted more and more attention. The formaldehyde, volatile organic compounds (Volatile Organic Compounds, VOC), fine dust particles, toxic Composition has become the number one concern for consumers after a home renovation. Among them, formaldehyde is a colorless gas with a strong pungent smell. It is very volatile at room temperature, and the volatile amount increases with the increase of temperature. It has a strong stimulating effect on human skin and mucous membranes. It can be converted into methanol in t...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D123/08C09D7/62C09D7/61D01F9/08
CPCC09D7/61C09D7/62C09D7/70C09D133/00D01F9/08C08L23/0853C08K9/12C08K7/26C08K7/06
Inventor 傅璐桦
Owner 惠州市永盛辉实业有限公司
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