Polyurethane foam air purification and filtration material and preparation method

A polyurethane foam and air purification technology, applied in the field of air purification, can solve the problems of unsatisfactory purification effect, complex preparation process, limited adsorption capacity, etc., and achieve the effects of excellent air purification effect, simple preparation process and low cost

Inactive Publication Date: 2019-02-15
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, when the widely used polyurethane foam matrix material is used as an air purification filter material, there are disadvantages such as limited adsorption capacity and unsatisfactory purification effect, and the preparation process is complicated and the cost is high.

Method used

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  • Polyurethane foam air purification and filtration material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Disperse 5 parts by weight of silver nitrate, 30 parts by weight of activated carbon, and 70 parts by weight of water evenly, and soak for 12 hours, then add 1 part by weight of hydrazine hydrate, heat to 80°C for 1 hour, then wash and dry to obtain activated carbon of precious metals;

[0030] (2) Immerse the activated carbon powder loaded with precious metals into sodium chloride solution, 25 parts by weight of activated carbon powder loaded with precious metals, 10 parts by weight of sodium chloride, 40 parts by weight of water, soak for 6 hours, so that sodium chloride can fully infiltrate the active The micropores of carbon are then dried, so that sodium chloride occupies the micropores of activated carbon and falls on the precious metal interface;

[0031] (3) 30 parts by weight of activated carbon loaded with precious metals and sodium chloride obtained in step (2), 4 parts by weight of foaming agent ammonium bicarbonate, 3 parts by weight of chain-extending ...

Embodiment 2

[0033] (1) Disperse 5 parts by weight of silver nitrate, 30 parts by weight of activated carbon, and 70 parts by weight of water evenly, soak for 15 hours, then add 2 parts by weight of hydrazine hydrate, heat to 600°C for 2 hours, then wash and dry to obtain activated carbon of precious metals;

[0034] (2) Immerse the activated carbon powder loaded with precious metals into sodium chloride solution, 25 parts by weight of activated carbon powder loaded with precious metals, 25 parts by weight of sodium chloride, 100 parts by weight of water, and soak for 10 hours to fully infiltrate the active carbon powder with sodium chloride. The micropores of carbon are then dried, so that sodium chloride occupies the micropores of activated carbon and falls on the precious metal interface;

[0035] (3) 10 parts by weight of activated carbon loaded with precious metals and sodium chloride obtained in step (2), 2 parts by weight of foaming agent sodium bicarbonate, 3 parts by weight of cha...

Embodiment 3

[0037] (1) Disperse 3 parts by weight of silver nitrate, 30 parts by weight of activated carbon, and 70 parts by weight of water evenly, soak for 15 hours, then add 3 parts by weight of hydrazine hydrate, heat to 80°C for 4 hours, then wash and dry to obtain activated carbon of precious metals;

[0038] (2) Immerse the activated carbon powder loaded with precious metals into sodium chloride solution, 45 parts by weight of activated carbon powder loaded with precious metals, 25 parts by weight of sodium chloride, 100 parts by weight of water, and soak for 10 hours to fully infiltrate the active carbon powder with sodium chloride. The micropores of carbon are then dried, so that sodium chloride occupies the micropores of activated carbon and falls on the precious metal interface;

[0039](3) 20 parts by weight of activated carbon loaded with precious metals and sodium chloride obtained in step (2), 4 parts by weight of foaming agent ammonium bicarbonate, 5 parts by weight of cha...

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Abstract

The invention relates to the field of air purification and discloses a polyurethane foam air purification and filtration material and a preparation method. The method comprises the following steps: (1) steeping nitrate of a noble metal in an active carbon powder, adding hydrazine hydrate for reducing to form noble metal loaded active carbon, (2) immersing the noble metal loaded active carbon powder in a sodium chloride solution, allowing sodium chloride to sufficiently infiltrate micropores of the active carbon and then performing drying, and (3) mixing the active carbon, a foaming agent, a chain extending and cross-linking agent, an accessory ingredient, polyisocyanate and polyester glycol for foam forming, curing and washing to prepare the polyurethane foam air purification and filtration material. Polyurethane foam serves as a support framework and is integrated with the uniform and firm noble metal loaded active carbon powder into a whole; the micropores are occupied by sodium chloride in advance; then elution is performed; the good micropores are guaranteed; and the material has very strong catalytic activity, can decompose volatile organic compounds at a room temperature andhas an excellent air purification effect.

Description

technical field [0001] The invention relates to the field of air purification, and discloses a polyurethane foam air purification filter material and a preparation method thereof. Background technique [0002] With the current development of science and technology and the popularity of interior decoration, the problem of air pollution is becoming more and more prominent, especially the content of volatile harmful gas pollutants is gradually increasing, which seriously threatens human health. Air purifier products to deal with this problem are also becoming more and more popular, and the filter material in the air purifier plays a role in effectively removing these pollutants in the air. [0003] At present, the filter element materials of most air purifiers are mainly activated carbon, graphene, silica gel, photocatalyst and other substances with adsorption and degradation effects, which are processed into a certain shape and filled in the filter screen or sprayed and bonded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D46/00B01D53/86B01D53/44
CPCB01D39/14B01D46/0001B01D46/0027B01D53/8687B01D2255/10B01D2257/708B01D2258/06Y02A50/20
Inventor 陈庆高锋
Owner CHENDU NEW KELI CHEM SCI CO LTD
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