Formaldehyde-removing polymer composite material and preparation method thereof

A composite material and polymer technology, which is applied in the field of formaldehyde-removing polymer composite materials and its preparation, can solve problems such as unsatisfactory formaldehyde-removing effect, and achieve the effect of simple preparation method and fresh air.

Pending Publication Date: 2020-05-19

陕西军来创环保科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0003] At present, the commonly used air purification technology is mainly physical adsorption, such as...

Method used

Attach composite strain in the above-mentioned modified activated carbon obtained, the formaldehyde in activated carbon adsorption air, composite bacterial strain decomposes the formaldehyde of adsorption, and then can make modified activated carbon continue to maintain good absorption, the effect of decomposing formaldehyde.

Wherein, porous filler is porous di...

Abstract

The invention belongs to the field of formaldehyde purification. The invention relates to a composite material, and particularly discloses a formaldehyde-removing polymer composite material and a preparation method thereof. The formaldehyde-removing polymer composite material is prepared from polyethylene glycol terephthalate, polylactic acid, Arabic gum, chitosan quaternary ammonium salt, 2-imidazolidinone, adipic dihydrazide, attapulgite, porous filler, tourmaline, modified activated carbon, syrup, a defoaming agent, an emulsifying agent, white carbon black and water. The composite materialhas the functions of purifying formaldehyde, protecting the environment and removing odor, so that the harmful substances in the air can be effectively purified. The modified activated carbon has theeffects of absorbing and decomposing formaldehyde. The preparation method is simple, and the prepared formaldehyde-removing polymer composite material can efficiently remove harmful substances such asformaldehyde, ammonia and benzene in indoor air, and can release negative oxygen ions, so that the air is fresh, environment-friendly and safe.

Technology Topic

ChemistryActivated carbon +17

Image

Examples

Experimental program(9)
Comparison scheme(1)
Effect test(1)

Example Embodiment

[0035] It should be noted that the preparation method of modified activated carbon includes the following steps:

[0036] 1) Add the activated carbon to 0.1mol/L hydrochloric acid and soak for 24h, then backwash with water until the pH of the filtered water is 6-7, then separate the activated carbon, dry at 30-40℃ for 2-3h, and set aside;

[0037] 2) Mix the activated carbon obtained in step 1) with the composite strain, culture at 35-40°C for 24-36h, and dry at 35-40°C to obtain modified activated carbon;

[0038] The mass ratio of activated carbon to composite strain is 1: (0.1-0.15).

[0039] Among them, the composite strains include formaldehyde degrading bacteria and Bacillus with a mass ratio of 1:1.

[0040] The modified activated carbon prepared above is attached with composite bacterial species, the activated carbon adsorbs formaldehyde in the air, and the composite bacterial species decomposes the adsorbed formaldehyde, thereby enabling the modified activated carbon to continuously maintain a good function of absorbing and decomposing formaldehyde.

[0041] In the present invention, the syrup can keep other raw materials in the paint in suspension except water, and prevent precipitation and separation. In the present invention, the weight of the syrup is 5-10 parts; more preferably 8-10 parts.

[0042] In the present invention, the defoamer is mainly used to eliminate and suppress bubbles in the paint. Among them, the defoaming agent is dimethyl silicone oil, polyoxyethylene polyoxypropylene pentaerythritol ether or polyoxyethylene polyoxypropanolamine ether. In the present invention, the weight parts of the defoamer is 1-3 parts; more preferably 2-3 parts.

[0043] Among them, when the defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether or polyoxyethylene polyoxypropanolamine ether, the relative molecular masses of polyoxyethylene polyoxypropylene pentaerythritol ether and polyoxyethylene polyoxypropanolamine ether are both 5000-10000.

[0044] In the present invention, the emulsifier is sodium dodecylbenzene sulfonate or fatty alcohol polyoxyethylene ether sodium sulfate. In the present invention, the weight parts of the emulsifier is 5-10 parts; more preferably 1-1.5 parts.

[0045] In the present invention, the white carbon black can not only prevent the precipitation of the coating, but also improve the adsorption to other raw materials and improve the dispersibility. In the present invention, the weight parts of white carbon black is 10-20 parts; more preferably 15-20 parts. It should be noted that the particle size of white carbon black is 300-500nm.

[0046] In the present invention, the weight parts of water is 240-350 parts.

[0047] The present invention also provides a method for preparing the above-mentioned formaldehyde-removing polymer composite material, which includes the following steps:

[0048] 1) Attapulgite, tourmaline, porous filler, and modified activated carbon are respectively crushed through 800-1000 mesh sieve for use;

[0049] 2) Add styrene-acrylic emulsion, acrylic emulsion and emulsifier into water and mix well;

[0050] 3) Add dimethyl vinyl ethoxy silane, film forming aids, syrup, defoaming agent, white carbon black, leveling agent, pigment and step 1) attapulgite, Tourmaline, porous filler and modified activated carbon are mixed evenly to obtain formaldehyde-removing polymer composite material.

[0051] Among them, styrene acrylic emulsion, acrylic emulsion, dimethyl vinyl ethoxy silane, film forming aids, attapulgite, porous filler, tourmaline, modified activated carbon, pigments, syrup, defoamer, leveling agent, The pigments, emulsifiers, white carbon black, and water are all the same as those mentioned above, and will not be repeated here.

[0052] The above preparation method is simple, and the prepared formaldehyde-removing polymer composite material can efficiently remove harmful substances such as formaldehyde, ammonia, benzene and the like in the indoor air, and can also release negative oxygen ions, making the air fresh, environmentally friendly and safe.

Example Embodiment

[0054] Example 1

[0055] The modified activated carbon is a microbial modified activated carbon, and the preparation method includes the following steps;

[0056] 1) Add the activated carbon to 0.1mol/L hydrochloric acid and soak for 24h, then backwash with water until the pH of the filtered water is 7, then separate the activated carbon, dry at 40°C for 3h, and set aside;

[0057] 2) Mix the activated charcoal obtained in step 1) with the composite strain, and cultivate it at 35°C for 36h, and dry at 40°C to obtain modified activated carbon; the composite strain includes formaldehyde degrading bacteria with a mass ratio of 1:1 And Bacillus;

[0058] The mass ratio of activated charcoal to composite strain is 1:0.15.

Example Embodiment

[0059] Example 2

[0060] The modified activated carbon is a microbial modified activated carbon, and the preparation method includes the following steps;

[0061] 1) Add the activated carbon to 0.1mol/L hydrochloric acid and soak for 24 hours, then backwash with water until the pH of the filtered water is 6, then separate the activated carbon, dry at 30°C for 2-3 hours, and set aside;

[0062] 2) Mix the activated carbon obtained in step 1) with the composite strain, and cultivate it at 40°C for 24 hours, and dry at 35°C to obtain modified activated carbon; the composite strain includes formaldehyde degrading bacteria with a mass ratio of 1:1 And Bacillus;

[0063] The mass ratio of activated charcoal to composite strain is 1:0.1.

PUM

Property	Measurement	Unit
Particle size	300.0 ~ 500.0	nm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Fresh air
Easy to prepare

Formaldehyde-removing polymer composite material and preparation method thereof

A composite material and polymer technology, which is applied in the field of formaldehyde-removing polymer composite materials and its preparation, can solve problems such as unsatisfactory formaldehyde-removing effect, and achieve the effect of simple preparation method and fresh air.

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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