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Preparation method of formaldehyde adsorption material

A technology for absorbing formaldehyde and carboxymethyl cellulose, which is applied in the field of air purification, can solve the problems of limited loading of chemical substances, long time, and long-term impact on the adsorption effect of formaldehyde during preparation, and achieves enhanced strength and wear resistance. Effect of specific surface area and adhesion enhancement

Pending Publication Date: 2021-11-05
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above materials are mesoporous or microporous materials, and it takes a long time for material loading, and the loading degree of chemical substances is limited, which affects the preparation time and formaldehyde adsorption effect of the above materials to a certain extent.

Method used

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  • Preparation method of formaldehyde adsorption material
  • Preparation method of formaldehyde adsorption material
  • Preparation method of formaldehyde adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] ① Place 40 parts of 100-mesh silica gel in the plasma reaction chamber, use 100W low-temperature plasma for 20 minutes under normal temperature and pressure oxygen flow, and take it out at room temperature.

[0033] ② During step 1), dissolve 5 parts of polyethyleneimine in 200 parts of deionized water, and disperse using a disperser at a dispersing speed of 20 r / min for 5 minutes.

[0034] ③ After step 2), dissolve 15 parts of ethylene urea in the mixed solution of step 2), and disperse using a disperser at a dispersing speed of 20r / min for 10 minutes.

[0035] ④ Add the silica gel powder after plasma treatment in step 1) to the solution in step 3) after dispersion, and the mixed suspension is continuously dispersed for 3 hours, and the dispersion speed is 20r / min.

[0036] ⑤ Filter the dispersed liquid through a 200-mesh gauze to leave effectively impregnated silica gel powder, put the powder in a glass plate, and dry it in a microwave drying equipment. The drying pow...

Embodiment 2

[0041] ① Place 15 parts of 100-mesh silica gel in the plasma reaction chamber, use 100W low-temperature plasma for 20 minutes under normal temperature and pressure oxygen flow, and take it out at room temperature.

[0042] ②During step 1), dissolve 10 parts of polyethyleneimine in 200 parts of deionized water and disperse using a disperser at a speed of 20 r / min for 5 minutes.

[0043] ③ After step 2), dissolve 5 parts of ethylene urea in the mixed solution of step 2), and disperse using a disperser at a dispersing speed of 20r / min for 10 minutes.

[0044] ④ Add the silica gel powder after plasma treatment in step 1) to the solution in step 3) after dispersion, and the mixed suspension is continuously dispersed for 3 hours, and the dispersion speed is 20r / min.

[0045] ⑤ Filter the dispersed liquid through a 200-mesh gauze to leave effectively impregnated silica gel powder, put the powder in a glass plate, and dry it in a microwave drying equipment. The drying power is set to ...

Embodiment 3

[0049] ① Place 15 parts of 100-mesh silica gel in the plasma reaction chamber, use 100W low-temperature plasma for 20 minutes under normal temperature and pressure oxygen flow, and take it out at room temperature.

[0050] ②During step 1), dissolve 10 parts of polyethyleneimine in 200 parts of deionized water and disperse using a disperser at a speed of 20 r / min for 5 minutes.

[0051] ③ After step 2), dissolve 5 parts of ammonium sulfate in the mixed solution of step 2), and disperse using a disperser at a dispersing speed of 20r / min for 10 minutes.

[0052] ④ Add the silica gel powder after plasma treatment in step 1) to the solution in step 3) after dispersion, and the mixed suspension is continuously dispersed for 3 hours, and the dispersion speed is 20r / min.

[0053] ⑤ Filter the dispersed liquid through a 200-mesh gauze to leave effectively impregnated silica gel powder, put the powder in a glass plate, and dry it in a microwave drying equipment. The drying power is set ...

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Abstract

The invention relates to a preparation method of a formaldehyde adsorption material. The preparation method is characterized by comprising the following steps of: (1) placing silica gel powder in a plasma reaction chamber so as to treat the silica gel powder, and taking out the treated silica gel powder; (2) dissolving polyethyleneimine in deionized water, performing uniform dispersing, adding an amine source, and performing uniform dispersing, forming a mixed solution; (3) adding plasma-treated silica gel powder into the mixed solution, performing dipping, dispersing and filtering, taking the effectively dipped silica gel powder, and drying the powder to obtain silica gel powder with the formaldehyde adsorption function; and (4) mixing the silica gel powder obtained in the step (3) with carboxymethyl cellulose and water, granulating and drying to obtain silica gel particles. The hydrophilic performance of the silica gel particles treated by the plasma is enhanced, and more ethylene urea can be loaded in the solution dipping process. Due to the existence of surface electrons, the amine source can be uniformly distributed inside and on the surface of silica gel channels during loading, and the formaldehyde adsorption performance of the material is improved.

Description

technical field [0001] The invention relates to a formaldehyde adsorption material, which belongs to the technical field of air purification. Background technique [0002] The existing formaldehyde adsorption materials are mainly activated carbon, silica gel, molecular sieve, and zeolite, which mainly carry out physical adsorption through the above materials or carry out chemical adsorption by loading active ingredients that can react with formaldehyde. However, most of the above materials are mesoporous or microporous materials, and it takes a long time for material loading, and the loading degree of chemical substances is limited, which affects the preparation time and formaldehyde adsorption effect of the above materials to a certain extent. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing a formaldehyde adsorption material with short preparation time and good formaldehyde adsorption effe...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01J20/103B01J20/22B01J20/24B01J20/261B01D53/02B01J2220/4806B01J2220/4812B01J2220/4825B01J2220/46B01D2257/708B01D2253/106B01D2253/202B01D2253/20
Inventor 佘丽丽杨志华赵杨郝浩郑军妹郭国良
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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