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Composite material for purifying air, and preparation method thereof

A technology for air purification and composite materials, which is applied in the field of indoor environmental pollution control, can solve the problems of inability to purify and decrease the physical adsorption performance, and achieve the effect of environmental protection and simple steps

Active Publication Date: 2020-08-28
INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current purification materials based on activated carbon can only purify benzene series substances, and cannot play a very good purification effect on aldehydes and ketones, especially small molecular carbonyl substances (formaldehyde, acetaldehyde, acrolein, acetone, etc.)
As an improvement method, people have carried out various modification treatments on activated carbon, but the technical problem is that the porous active sites inside the activated carbon are sacrificed while the modification treatment is performed on activated carbon, although the adsorption capacity for a certain special substance is enhanced. , but its own physical adsorption performance has declined
And as far as the current modification technology of activated carbon is concerned, most modified activated carbons cannot purify carbonyl substances very well.

Method used

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  • Composite material for purifying air, and preparation method thereof
  • Composite material for purifying air, and preparation method thereof
  • Composite material for purifying air, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a method for preparing a composite material for air purification, comprising the following steps:

[0057] Step 1: Prepare modified silica gel particles, the preparation process is as follows:

[0058] Step 1: Put amino-terminated HPAMAM hyperbranched polymer, silane coupling agent KH550, and surfactant lauryl polyoxyethylene ether in water in sequence. The mass concentrations of HPAMAM, KH550 and lauryl polyoxyethylene ether are 10%, 5% and 2% respectively, and they are evenly stirred by means of physical stirring or magnetic stirring to obtain a modified impregnation solution.

[0059] Step 2: Put 1 part of silica gel into 2 parts of modified impregnating liquid, continue to stir evenly, fully impregnate and stand for 8 hours to obtain a modified silica gel emulsion.

[0060] Step 3: Dry the modified silica gel emulsion in step 2 in a converter-type air heating bath at 120° C. to a water content of 5%, to obtain modified silica gel particles ...

Embodiment 2

[0071] This embodiment provides a method for preparing a composite material for purifying air, comprising the following steps:

[0072] Step 1: Prepare modified silica gel particles, the preparation process is as follows:

[0073]Step 1: Add amino-terminated HPAMAM hyperbranched polymer, silane coupling agent KH560, and surfactant nonylphenol polyoxyethylene ether in water in sequence. The mass concentrations of HPAMAM, KH560, and nonylphenol polyoxyethylene ether are 1%, 0.5%, and 0.1%, respectively, and they are evenly stirred by means of physical stirring or magnetic stirring to obtain a modified impregnation solution.

[0074] Step 2: Put 1 part of silica gel into 2 parts of modified impregnating liquid, continue to stir evenly, fully impregnate and let stand for 4 hours to obtain modified silica gel emulsion.

[0075] Step 3: Dry the modified silica gel emulsion in step 2 in a converter-type air heating bath at 80°C until the water content is 20%, to obtain modified sili...

Embodiment 3

[0079] This embodiment provides a method for preparing a composite material for purifying air, comprising the following steps:

[0080] Step 1: Prepare modified silica gel particles, the preparation process is as follows:

[0081] Step 1: Put the amino-terminated HPAMAM hyperbranched polymer, the silane coupling agent KH560, and the surfactant octylphenol polyoxyethylene ether into the water in sequence. The mass concentrations of HPAMAM, KH560, and octylphenol polyoxyethylene ether are 5%, 2.5%, and 0.5%, respectively, and they are evenly stirred by physical stirring or magnetic stirring to obtain a modified impregnation solution.

[0082] Step 2: Put 1 part of silica gel into 2 parts of modified impregnating liquid, continue to stir evenly, fully impregnate and stand for 8 hours to obtain a modified silica gel emulsion.

[0083] Step 3: Dry the modified silica gel emulsion in step 2 in a converter-type air heating bath at 100°C until the water content is 10%, to obtain modi...

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Abstract

The invention relates to the technical field of indoor environment pollution control, and especially relates to a composite material for purifying air. The composite material comprises a filter support material, and activated carbon particles and modified silica gel particles, which are attached to the filter support material, and the modified silica gel particles comprise a silica gel carrier andamino-terminated hyperbranched polyamidoamine grafted on the silica gel carrier. The surfaces of the modified silica gel particles are grafted with amino-terminated HPAMAM, so that the surface of thesilica gel contains sufficient end amino groups, and the end amino groups can be subjected to a condensation reaction with aldehydes and ketones to capture and fix a large number of aldehydes and ketones molecules, so that the modified silica gel has excellent capacity of adsorbing aldehydes and ketones substances; and the active carbon has the performance of adsorbing hydrocarbons and benzene series, and the active carbon and the benzene series are combined for use, so that the purpose of basically removing main organic pollutants in the cabin of a ship is achieved. The invention also relates to a preparation method of the composite material.

Description

technical field [0001] The invention relates to the technical field of indoor environmental pollution control, in particular to a composite material for purifying air and a preparation method thereof. Background technique [0002] According to the definition of the World Health Organization (WHO), volatile organic compounds (VOCs) are various organic compounds with a boiling point of 50°C to 260°C at room temperature. In my country, VOCs refer to organic compounds with a saturated vapor pressure greater than 70Pa at room temperature and a boiling point below 260°C at normal pressure, or all organic compounds with a vapor pressure greater than or equal to 10Pa at 20°C and are volatile. Most VOCs have unpleasant special smell, and are toxic, irritating, teratogenic and carcinogenic, especially benzene, toluene and formaldehyde will cause great harm to human health. [0003] The cabin of a ship is a special manned artificial environment. Due to the activities of personnel, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01D53/02B01J20/30
CPCB01J20/20B01J20/103B01D53/02B01J20/264B01D2257/708
Inventor 林本成袭著革田蕾刘焕亮来文庆李哲闫峻刘晓华石玥
Owner INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI