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Double-solid slow-release air purifying agent

An air purifier and slow-release technology, which is applied to gasification substances, biocides, disinfectants, etc., can solve the problems of slow reaction start and unstable chlorine dioxide release, and achieve stable product performance and controllable release flux. , the effect of simple preparation process

Pending Publication Date: 2022-02-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-solid slow-release air purifier to overcome the defects of unstable chlorine dioxide release and slow reaction start in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Take 1 part of sodium carbonate, 12 parts of sodium chlorite, and 1 part of sodium sulfate, add 72 parts of water to dissolve, add dropwise α-naphtholphthalein indicator to turn red, and then add 10 parts of polyethylene glycol to prepare gel;

[0034] (2) 2 parts of dried calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate are mixed evenly, sealed and packaged into an auxiliary material bag;

[0035] (3) Unseal the auxiliary material package during use, then pour out the contents of the auxiliary material package and cover the gel, and the two types of materials react to release chlorine dioxide, which is stably and slowly released in the gel. The sustained release rate of 100g of air purifier is 15-20mg / h, and gradually becomes colorless, indicating that the reaction of raw materials is completed.

Embodiment 2

[0037] (1) Take 1 part of sodium carbonate, 10 parts of sodium chlorite, and 1 part of magnesium sulfate, add 72 parts of water to dissolve, add dropwise bromothymol blue indicator to become blue, and then add 8 parts of sodium polyacrylate to prepare get the gel;

[0038] (2) 2 parts of dried calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate are mixed evenly, sealed and packaged into an auxiliary material bag;

[0039] (3) Unseal the auxiliary material package during use, then pour out the contents of the auxiliary material package and cover the gel, and the two types of materials react to release chlorine dioxide, which is stably and slowly released in the gel. The sustained release rate of 100g air purifier is 14-16mg / h, and the blue color gradually turns yellow, indicating that the raw material reaction is complete.

Embodiment 3

[0041] Compared with Example 1, most of them are the same, except that in this example, polyethylene glycol is changed to polyvinyl alcohol.

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Abstract

The invention relates to a double-solid slow-release air purifying agent. The air purifying agent comprises gel and an auxiliary material bag which acts with the gel and enables the gel to release chlorine dioxide, and the gel comprises the following raw materials in parts by weight: 1 part of sodium carbonate, 10-12 parts of sodium chlorite, 1 part of sulfate, 72 parts of water and 8-10 parts of water-absorbent resin; and the auxiliary material bag comprises the following raw materials in parts by weight: 2 parts of calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate. When the purifying agent is used, the auxiliary material bag is unsealed, then contents in the auxiliary material bag are poured out to cover the gel, the two materials react to release chlorine dioxide, and the release process is limited by the barrier effect of the gel formed by the water-absorbent resin, so that the chlorine dioxide can be slowly released from the gel; and the calcium chloride and the calcium oxide release heat after absorbing water, so that the sodium chlorite decomposition reaction is accelerated. Compared with the prior art, the air purifying agent can slowly release chlorine dioxide gas, reaction starting is fast, and the effective service life is long.

Description

technical field [0001] The invention belongs to the technical field of air disinfection and relates to a dual-solid slow-release air purifier. Background technique [0002] Air purification, deodorization and elimination of germs are problems that are often encountered in life and work. Upholstery and furniture cause serious indoor formaldehyde pollution and affect human health. The existing main methods for removing formaldehyde and peculiar smell are adsorption method, spraying chemical neutralization method and coating sealing method. However, these methods, such as adsorption method and spraying drug neutralization method, can only temporarily remove formaldehyde, and then formaldehyde will be emitted from the source again. [0003] Chlorine dioxide can oxidize formaldehyde to formic acid until CO 2 To remove formaldehyde, N201710727467.X invented a preparation method of long-acting slow-release solid chlorine dioxide air purifier, a superabsorbent resin made of carbo...

Claims

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Application Information

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IPC IPC(8): A01N59/00A01N25/08A01P3/00A01P1/00B01D53/72B01D53/86A61L9/015A61L101/06
CPCA01N59/00A01N25/08A61L9/015B01D53/8668A61L2101/06
Inventor 申哲民陈明袁涛
Owner SHANGHAI JIAO TONG UNIV
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