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Puttying material with catalytic formaldehyde degradation and absorption function, and preparation method thereof

A technology for catalytic degradation and formaldehyde, applied in the direction of chemical instruments and methods, separation methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of poor air permeability and water absorption, low catalytic degradation efficiency, and inability to Fully contact with the air and other issues, to achieve the effect of wide application and good market prospect

Active Publication Date: 2020-04-10
南京冰锋环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, limestone materials are generally made by mixing inorganic fillers such as lime with construction glue. Among them, traditional construction glue contains unreacted formaldehyde. In some improved construction glue formulas, urea is added to absorb unreacted formaldehyde. formaldehyde, but it is impossible to absorb free formaldehyde in the air released by indoor furniture, curtains and other objects
On the market, anatase-type titanium dioxide powder is used to catalyze the degradation of formaldehyde, but due to the use of fluorocarbon emulsion with poor air permeability and water absorption, the anatase-type titanium dioxide powder cannot fully contact with the air, and, resulting in The efficiency of catalytic degradation is not high (patent application number: 201520061816.1)

Method used

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  • Puttying material with catalytic formaldehyde degradation and absorption function, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: A kind of ash batch material with the function of catalytically degrading formaldehyde. The components of the raw materials are shown in Table 1.

[0020] A kind of preparation method of the batch ash material with catalytic degradation formaldehyde function is as follows:

[0021] Step 1, weighing polyvinyl alcohol and water, heating the water to 90°C to fully dissolve the polyvinyl alcohol;

[0022] Step 2, adding citric acid to the polyvinyl alcohol aqueous solution obtained in step 1, stirring evenly, fully dissolving the citric acid, and standing at room temperature for 48 hours;

[0023] Step 3: Add anatase-shaped titanium dioxide powder, gypsum, bamboo charcoal powder, and silicon dioxide to the aqueous solution of cross-linked polyvinyl alcohol, and stir evenly to obtain a dust-pigmented material with the function of catalytically degrading formaldehyde.

Embodiment 2

[0024] Example 2: A kind of ash batch material with the function of catalytically degrading formaldehyde. The components of the raw materials are shown in Table 1.

[0025] A kind of preparation method of the batch ash material with catalytic degradation formaldehyde function is as follows:

[0026] Step 1, weighing polyvinyl alcohol and water, heating the water to 90°C to fully dissolve the polyvinyl alcohol;

[0027] Step 2, adding hydrochloric acid dropwise to the polyvinyl alcohol aqueous solution obtained in step 1, so that the pH value is 3-4;

[0028] Step 3, adding sodium tetraborate and glutaraldehyde to the acidic polyvinyl alcohol aqueous solution obtained in step 2, stirring evenly, fully dissolving lemon and sodium tetraborate acid, and standing at room temperature for 12 hours;

[0029] Step 4, adding sodium bicarbonate dropwise to the cross-linked polyvinyl alcohol aqueous solution obtained in step 3, so that the pH value is 7-8;

[0030] Step 5: Add anatase-s...

Embodiment 3

[0031] Example 3: A kind of ash batch material with the function of catalytically degrading formaldehyde. The components of the raw materials are shown in Table 1.

[0032] A kind of preparation method of the batch ash material with catalytic degradation formaldehyde function is as follows:

[0033] Step 1, weighing polyvinyl alcohol and water, heating the water to 90°C to fully dissolve the polyvinyl alcohol;

[0034] Step 2, adding hydrochloric acid dropwise to the polyvinyl alcohol aqueous solution obtained in step 1, so that the pH value is 3-4;

[0035] Step 3, adding citric acid, sodium tetraborate, and glutaraldehyde to the acidic polyvinyl alcohol aqueous solution obtained in step 2, stirring evenly, fully dissolving lemon and sodium tetraborate acid, and standing at room temperature for 12 hours;

[0036] Step 4, adding sodium bicarbonate dropwise to the cross-linked polyvinyl alcohol aqueous solution obtained in step 3, so that the pH value is 7-8;

[0037] Step 5:...

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Abstract

The invention discloses a puttying material with catalytic formaldehyde degradation and absorption function, and a preparation method thereof, wherein the puttying material comprises the following components by weight: 30-40 parts of inorganic powder, 5-10 parts of gypsum, 1-5 parts of anatase-shaped titanium dioxide powder, 20-40 parts of polyvinyl alcohol, 40-60 parts of water and 10-20 parts ofa cross-linking agent, wherein the acid-alkali regulator is one or a plurality of materials selected from hydrochloric acid, sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate and sodium bicarbonate, and the cross-linking agent is at least one selected from boric acid, borate, glutaraldehyde and citric acid. The preparation method comprises the following steps: 1, weighing polyvinyl alcohol and water according to a weight part ratio, and heating the water to 90 DEG C to fully dissolve the polyvinyl alcohol; 2, adjusting the pH value of the polyvinyl alcohol aqueoussolution obtained in the step 1 to 2-3, uniformly mixing the polyvinyl alcohol aqueous solution and a cross-linking agent, and standing for 24-48 hours to obtain a cross-linked polyvinyl alcohol aqueous solution; 3, adjusting the pH value of the cross-linked polyvinyl alcohol aqueous solution obtained in the step 2 to 7-8; and 4, uniformly mixing the cross-linked polyvinyl alcohol aqueous solutionobtained in the step 3, inorganic powder, gypsum and anatase-shaped titanium dioxide powder to obtain the puttying material with the function of catalytic degradation of formaldehyde.

Description

technical field [0001] The invention relates to the field of ash-triggering materials, in particular to an ash-triggering material with the function of catalytically degrading formaldehyde. Background technique [0002] Formaldehyde is one of the main organic pollutants that volatilize indoors. It has a serious impact on human health and has the risk of carcinogenesis. Therefore, its removal is very important to improve air quality and human health. In the prior art, limestone materials are generally made by mixing inorganic fillers such as lime with construction glue. Among them, traditional construction glue contains unreacted formaldehyde. In some improved construction glue formulas, urea is added to absorb unreacted formaldehyde. formaldehyde, but it is impossible to absorb free formaldehyde in the air released by indoor furniture, curtains and other objects. On the market, anatase-type titanium dioxide powder is used to catalyze the degradation of formaldehyde, but due...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/72B01J31/38
CPCB01D53/8668B01J31/38
Inventor 徐健康胡帅郑浙衡
Owner 南京冰锋环保科技有限公司
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