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Self-assembly coating cloth or paper for treating VOCs (volatile organic compounds) like formaldehyde and preparation method thereof

A technology of self-assembly and coated cloth, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of limited amount of adsorption material and contact area, occupying indoor and car space, affecting adsorption efficiency, etc., to achieve Not easy to pulverize and fall off, not easy to drop powder, high adsorption efficiency

Active Publication Date: 2017-08-11
TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical adsorption methods often use porous adsorbents with high specific surface areas such as natural clay, molecular sieves, and activated carbon to adsorb volatile substances such as formaldehyde, but these adsorbents are mostly placed in bags and exposed to air. The amount and contact area of ​​adsorption materials are limited, which affects the adsorption efficiency. At the same time, too many adsorption packages not only occupy indoor and car space, but also affect the appearance

Method used

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  • Self-assembly coating cloth or paper for treating VOCs (volatile organic compounds) like formaldehyde and preparation method thereof
  • Self-assembly coating cloth or paper for treating VOCs (volatile organic compounds) like formaldehyde and preparation method thereof

Examples

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Effect test

Embodiment 1

[0047] A kind of preparation method of the self-assembled coating furniture cloth that is used for the VOCs treatment such as formaldehyde, comprises the steps:

[0048] Prepare mixed solution a so that it contains 10g / L cationic polyelectrolyte (a mixed solution composed of polyallylamine hydrochloride and polyvinylamine in a volume ratio of 3:1), 0.1mol / L inorganic salt (sodium chloride) ; The 0.2mm thick polyester-cotton furniture cloth is completely submerged in the mixed solution a and deposited for 15 minutes; the mixed solution b is prepared so that it contains 5% zeolite by mass fraction, 1% nano-titanium dioxide, and 3% dodecane Sodium alkylbenzenesulfonate, 5% polyvinylpyrrolidone, and fully stirred and dispersed, the particle size of the zeolite nanoparticles is 50-200nm, and the particle size of the nano-titanium dioxide particles is 10-20nm; the polyester-cotton furniture cloth is mixed Take it out from solution a, and dry thoroughly in hot air at 50°C; immerse th...

Embodiment 2

[0050] A kind of preparation method of the self-assembled coating furniture cloth that is used for the VOCs treatment such as formaldehyde, comprises the steps:

[0051] Prepare mixed solution a so that it contains 20g / L anionic polyelectrolyte (polystyrene sulfonic acid), 0.05mol / L inorganic salt (ammonium chloride); 0.3mm thick linen furniture cloth is completely immersed in this mixed solution a In, deposition 15 minutes; Preparation mixed liquid b, make it contain the diatomite that mass fraction is 10%, the nanometer zinc oxide of 1%, the sodium dodecyl sulfonate of 2%, the curing agent of 4% (polyethylene The mass ratio of pyrrolidone to polyethylene oxide is 1:1), and fully stirred and dispersed, the particle diameter of the diatomaceous earth nanoparticles is 100-500nm, and the particle diameter of the nano-zinc oxide particles is 20nm; Take it out of the mixture a, and dry it in hot air at 50°C; immerse the dried linen furniture in the mixture b, let it stand for 15 m...

Embodiment 3

[0053] A kind of preparation method of self-assembled coating wallpaper that is used for VOCs control such as formaldehyde, comprises the steps:

[0054] Prepare mixed solution a, make it comprise the cationic polyelectrolyte (polyethylene amine) of 15g / L, the inorganic salt (potassium chloride) of 0.15mol / L; The polyester non-woven fabric wallpaper is fully immersed in this mixed solution a, deposits 15 minutes; Prepare mixed solution b, make it comprise the attapulgite of 15% massfraction, the catalyst nanoparticle of 2% (nano-titanium dioxide and nano-manganese dioxide mass ratio are 9:1), 3% sodium laurate , 8% polyethylene glycol, and fully stirred and dispersed, the particle size of the attapulgite particle is 200-500nm, and the particle size of the catalyst nanoparticle is 10-20nm; the polyester non-woven paper is taken out from the mixed solution a , dry in hot air at 50°C; immerse the dried polyester non-woven fabric wallpaper in the mixture b, let it stand for 15 min...

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Abstract

The invention provides self-assembly coating cloth or paper for treating VOCs (volatile organic compounds) like formaldehyde and a preparation method thereof. The self-assembly coating cloth comprises a cloth substrate, an adsorption layer, a cured layer and a composite nano catalyst particle layer which are arranged layer upon layer, nanoparticles in the composite nano catalyst particle layer exist on the surface of all fiber of the cloth substrate, overall coverage rate reaches higher than 90%, and the nanoparticles in the composite nano catalyst particle layer is embedded in the cured layer partly. The composite nano catalyst particles are high in coverage rate, high in binding force with cloth fiber, sufficient in contact area with the VOCs like formaldehyde and capable of thoroughly catalyzing and decomposing the VOCs like formaldehyde.

Description

technical field [0001] The invention belongs to the field of indoor air pollution purification, and in particular relates to a self-assembled coated cloth or paper used for the treatment of formaldehyde and other VOCs and a preparation method thereof. Background technique [0002] With the gradual popularization of fully-decorated houses and cars, the environmental quality problems in the interior and in the car have attracted more and more attention from all walks of life. Newly renovated houses and new cars will use a large number of decoration materials, which will release formaldehyde, benzene, toluene, xylene, TVOC (total volatile organic compounds) and other toxic gases to varying degrees. Among them, the pollution of formaldehyde is the most serious, and it is also the most harmful to the human body. Formaldehyde is a poisonous gas with a strong pungent smell. A certain concentration of formaldehyde can cause damage to the human nervous system, lungs, liver and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/88B01D53/86B01D53/72
CPCB01D53/8668B01D53/88B01D2257/708Y02A50/20
Inventor 汪家道杜川
Owner TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV
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