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A kind of self-assembled coated cloth or paper for vocs management and preparation method thereof

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

Active Publication Date: 2020-06-02
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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  • A kind of self-assembled coated cloth or paper for vocs management and preparation method thereof
  • A kind of self-assembled coated cloth or paper for vocs management and preparation method thereof

Examples

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Comparison scheme
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, make it comprise the cationic polyelectrolyte (polyallylamine hydrochloride and polyvinylamine by volume ratio 3:1 mixed solution of composition) of 10 g / L, the inorganic salt of 0.1 mol / L (sodium chloride ); the 0.2mm thick polyester-cotton furniture cloth was completely submerged in the mixed solution a, and deposited for 15 minutes; the mixed solution b was prepared so that it contained 5% zeolite by mass fraction, 1% nano-titanium dioxide, and 3% decathene Sodium dialkylbenzenesulfonate, 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; Take it out of the mixture a, and dry it thoroughly in the hot air at 50°C; immerse the dried polyester-cot...

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), 0.05 mol / L inorganic salt (ammonium chloride); completely immerse 0.3mm thick linen furniture cloth in the mixed solution a , deposit for 15 minutes; prepare the mixed solution b so that it contains 10% diatomite by mass fraction, 1% nano-zinc oxide, 2% sodium dodecylsulfonate, 4% curing agent (polyethylene The mass ratio of pyrrolidone to polyethylene oxide is 1:1), and fully stirred and dispersed, the particle size of the diatomite nanoparticles is 100-500nm, and the particle size 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 minutes, and dry it thoroughly with hot air at 50°C; p...

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 so that it contains 15 g / L cationic polyelectrolyte (polyethylene amine), 0.15 mol / L inorganic salt (potassium chloride); the polyester non-woven wallpaper is completely immersed in the mixed solution a, Deposit for 15 minutes; prepare the mixed solution b so that it contains 15% by mass fraction of attapulgite, 2% of catalyst nanoparticles (the mass ratio of nano-titanium dioxide to nano-manganese dioxide is 9:1), and 3% of lauric acid Sodium, 8% polyethylene glycol, and fully stirred and dispersed, the particle size of the attapulgite particles is 200-500nm, and the particle size of the catalyst nanoparticles is 10-20nm; Take it out and dry it in hot air at 50°C; immerse the dried polyester non-woven wallpaper in the mixture b, let it stand for 15 minutes and then dry it thoroughly with hot air at 5...

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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 Patents(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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