CN114015326A - Formaldehyde-removing environment-friendly new material and preparation method thereof - Google Patents

Formaldehyde-removing environment-friendly new material and preparation method thereof Download PDF

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CN114015326A
CN114015326A CN202111519138.9A CN202111519138A CN114015326A CN 114015326 A CN114015326 A CN 114015326A CN 202111519138 A CN202111519138 A CN 202111519138A CN 114015326 A CN114015326 A CN 114015326A
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formaldehyde
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nano tio
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林继军
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Chengdu Zhengrong Wangpai Office Furniture Co ltd
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Chengdu Zhengrong Wangpai Office Furniture Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Plant Pathology (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Catalysts (AREA)

Abstract

The invention relates to the field of new materials for removing formaldehyde, and discloses a new environment-friendly material for removing formaldehyde, which comprises the following raw materials in parts by weight: modified nano TiO25-15 parts of graphene oxide, 1-10 parts of sodium percarbonate, 50-100 parts of activated carbon, 1-10 parts of amino acid mixed liquor, 10-50 parts of aqueous epoxy resin, 1-5 parts of thickening agent, 1-5 parts of dispersing agent, 1-5 parts of emulsifying agent, 1-5 parts of defoaming agent, 1-5 parts of film forming agent and 1-5 parts of preservative; the formaldehyde removing agent has stronger formaldehyde removing capability and can decompose formaldehyde more durably, stably and efficiently.

Description

Formaldehyde-removing environment-friendly new material and preparation method thereof
Technical Field
The invention relates to the field of new materials for removing formaldehyde, and particularly relates to a new environment-friendly material for removing formaldehyde and a preparation method thereof.
Background
In the process of indoor decoration and fitment, various materials or plates and the like used inevitably generate a large amount of volatile organic compounds, mainly comprising formaldehyde, benzene compounds and the like, wherein the formaldehyde is most representative and has the most remarkable influence on human health. It has high toxicity and irritation, has great harm to human health, is one of the main carcinogenic and teratogenic chemical substances, and has long been a hotspot of current research on how to effectively remove formaldehyde in indoor air, because it is closely related to the quality of life and physical health of people.
The conventional formaldehyde removal method mainly adopts a plant absorption method, a physical adsorption method, a photocatalyst method and a chemical method. The plant absorption method and the physical adsorption method take longer time, the new house can not live in for a long time after being decorated, the pure physical adsorption of the formaldehyde by the activated carbon is reversible, and a part of formaldehyde can be desorbed along with the saturation of the adsorption; the photocatalyst method is limited by no light at night, and the photocatalyst cannot play a role without light; the chemical method is that some substance which can generate solid-gas complex phase reaction with formaldehyde is added to absorb and decompose formaldehyde, and the addition amount and the reaction activity determine the validity period and the formaldehyde decomposition efficiency, but secondary pollution is easy to generate. In the prior art, a photocatalyst method is mostly adopted to remove formaldehyde, so that the preparation of a material for removing formaldehyde by using the photocatalyst method is particularly important.
Disclosure of Invention
In view of the above-mentioned disadvantages in the prior art, the first objective of the present invention is to provide a new environment-friendly material for removing formaldehyde, which has a stronger formaldehyde-removing ability and can decompose formaldehyde more durably, stably and efficiently.
The second purpose of the invention is to provide a preparation method of the novel environment-friendly formaldehyde-removing material, which enables the modified nano TiO to be modified2The distribution is more uniform, the performance is stable, the product stability is improved, and the preparation method has strong operability.
In order to achieve the above purpose, the solution adopted by the invention is as follows:
the novel environment-friendly formaldehyde-removing material comprises the following raw materials in parts by weight: modified nano TiO25-15 parts of graphene oxide, 1-10 parts of sodium percarbonate, 50-100 parts of activated carbon, 1-10 parts of amino acid mixed liquor, 10-50 parts of water-based epoxy resin, 1-5 parts of thickening agent, 1-5 parts of dispersing agent, 1-5 parts of emulsifying agent, 1-5 parts of defoaming agent, 1-5 parts of film forming agent and 1-5 parts of preservative.
Further, the modified nano TiO2Comprises the following steps: Y-N doped nano TiO2。
Further, the feed comprises the following raw materials in parts by weight: modified nano TiO25-10 parts of graphene oxide, 1-5 parts of sodium percarbonate, 70-100 parts of activated carbon, 5-10 parts of amino acid mixed liquor, 20-40 parts of aqueous epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, 1-3 parts of defoaming agent, 1-3 parts of film forming agent and 1-3 parts of preservative.
Further, the feed comprises the following raw materials in parts by weight: modified nano TiO27-10 parts of graphene oxide, 2-5 parts of sodium percarbonate, 80-100 parts of activated carbon, 5-8 parts of amino acid mixed liquor, 30-40 parts of aqueous epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, 1-3 parts of defoaming agent, 1-3 parts of film forming agent and 1-3 parts of preservative.
Wherein, the modified nano TiO2The preparation method comprises the following steps:
(1) dissolving tetrabutyl titanate in absolute ethyl alcohol, adding glacial acetic acid, and uniformly mixing to obtain a solution A;
(2) dissolving a solution containing gadolinium element and a solution containing nitrogen element in absolute ethyl alcohol, and adjusting the pH of the solutions to 3-4 to prepare a solution B;
(3) slowly dripping the solution B into the solution A, aging the solution after the solution is changed into gel from sol, and then drying and calcining the gel to obtain the Y-N doped nano TiO2And (3) powder.
A preparation method of a formaldehyde-removing environment-friendly new material comprises the following steps: s1, adding water and modified nano TiO2Adding activated carbon into an emulsifying kettle, adding an emulsifier, and stirring at a high speed until the emulsifier is dissolved to prepare a pre-emulsion;
s2, adding the waterborne epoxy resin and the dispersing agent into a reaction kettle, and dispersing for 20-30min under the condition of 300-400rpm to prepare a waterborne epoxy resin system;
s3, adding the pre-emulsion into a water-based epoxy resin system, uniformly stirring, adding graphene oxide, and dispersing for 30-40min under the conditions of 400-550 rpm;
s4, adding water and the rest raw materials into the reaction kettle, stirring at a low speed for 60-90min, filtering and discharging to obtain a finished product.
The invention has the beneficial effects that:
1. the invention utilizes Y-N doped nano TiO2In a manner that TiO can be more effectively suppressed2And promote the recombination of electron-hole of TiO2The absorption wavelength of light is increased, the utilization rate of light energy is improved, and thus the modified nano TiO is improved2The obtained material has stronger formaldehyde removing capability, andcan decompose formaldehyde more durably, stably and efficiently. At the same time, the modified nano TiO2The generated free hydroxyl and active oxygen have extremely strong sterilization and mildew prevention functions, can effectively adsorb peculiar smell substances, avoid generating moldy peculiar smell, and have remarkable air purification effect.
2. The formaldehyde removing material combines the mechanism of photocatalytic decomposition of a photocatalyst with the mechanism of physical adsorption and formaldehyde removal of activated carbon, and removes formaldehyde by the activated carbon through physical adsorption under the condition of no illumination; under the illumination condition, the photocatalyst catalyzes the formaldehyde to decompose and realizes the regeneration of the active carbon, so the photocatalyst can be repeatedly used for a long time, and the formaldehyde is removed without completely depending on illumination, thereby the formaldehyde is removed more efficiently and durably, the formaldehyde removal period is shortened, and the formaldehyde is removed more efficiently and environmentally friendly.
3. The preparation method of the formaldehyde-removing environment-friendly new material firstly prepares the pre-emulsion so as to modify the nano TiO2The distribution is more uniform, the performance is stable, the product stability is improved, and the preparation method has strong operability.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The new environment-friendly material for removing formaldehyde and the preparation method thereof provided by the embodiment of the invention are specifically described below.
The invention provides a novel environment-friendly formaldehyde-removing material which comprises the following raw materials in parts by weight: modified nano TiO25-15 parts of graphene oxide, 1-10 parts of sodium percarbonate, 50-100 parts of activated carbon, 1-10 parts of amino acid mixed liquor, 10-50 parts of aqueous epoxy resin, 1-5 parts of thickening agent, 1-5 parts of dispersing agent, 1-5 parts of emulsifying agent, 1-5 parts of defoaming agent, 1-5 parts of film forming agent and 1-5 parts of preservative; wherein, the modified nano TiO2Comprises the following steps: Y-N doped nano TiO2。
The inventors utilized nano TiO2In purpleUnder the irradiation of external light, a photocatalytic reaction is generated, so that organic matters such as formaldehyde and bacteria are oxidized and decomposed into H2O and CO2Thereby achieving the purpose of purifying air; further, to improve the nano TiO2The inventor has the capability of degrading the formaldehyde, namely the nano TiO2Further modified by inhibiting TiO2The angle of electron-hole recombination of (A) by doping nano TiO with Y-N2Y is a rare earth metal, Y is3+After TiO2 is doped by ions, TiO can be effectively inhibited2And increasing the absorption wavelength of the electron-hole recombination; especially nitrogen, may partially replace TiO2Partial oxygen vacancy of (2) further suppresses TiO2And promote the recombination of electron-hole of TiO2The absorption wavelength of light is increased, the utilization rate of light energy is improved, and thus the modified nano TiO is improved2The catalytic activity of (2) makes the formaldehyde removing ability stronger. At the same time, the modified nano TiO2The generated free hydroxyl and active oxygen have extremely strong sterilization and mildew prevention functions, can effectively adsorb peculiar smell substances, avoid generating moldy peculiar smell, and have remarkable air purification effect.
Specifically, modified nano TiO2The preparation method of the powder comprises the following steps: (1) dissolving tetrabutyl titanate in absolute ethyl alcohol, adding glacial acetic acid, and uniformly mixing to obtain a solution A;
(2) dissolving a solution containing gadolinium element and a solution containing nitrogen element in absolute ethyl alcohol, and adjusting the pH of the solutions to 3-4 to prepare a solution B;
(3) slowly dripping the solution B into the solution A, aging the solution after the solution is changed into gel from sol, and then drying and calcining the gel to obtain the Y-N doped nano TiO2And (3) powder. The specific solution containing gadolinium may be a salt or an acid containing gadolinium.
In addition, the graphene oxide is innovatively introduced into the material by the inventor, so that the material is good in hydrophilicity and has excellent dispersibility, the dispersing performance of all substances in the system is better, and the stability of the system is better; meanwhile, enough loose porous structures are built for the system, so that the modified nano TiO can be used2More uniformly filled inIn the porous structure, further modify the nano TiO2The outer surface exposed to the material can be more uniform and have larger specific surface area, so that the photocatalyst is efficiently contacted with natural light, the effective photocatalyst substances are more uniformly distributed, and organic matters such as formaldehyde and the like are more efficiently decomposed.
In addition, the invention combines the mechanism of photocatalytic decomposition of photocatalyst with the mechanism of physical adsorption and formaldehyde removal of activated carbon, and removes formaldehyde by physical adsorption of activated carbon under the condition of no illumination; under the illumination condition, the photocatalyst catalyzes the formaldehyde to decompose and realizes the regeneration of the activated carbon, so that the photocatalyst can be repeatedly used for a long time, and the formaldehyde is removed without completely depending on illumination, thereby more efficiently and durably removing the formaldehyde and shortening the formaldehyde removal period.
The formaldehyde-removing environment-friendly new material disclosed by the invention comprises the following components in a more optimal ratio: modified nano TiO25-10 parts of graphene oxide, 1-5 parts of sodium percarbonate, 70-100 parts of activated carbon, 5-10 parts of amino acid mixed liquor, 20-40 parts of aqueous epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, 1-3 parts of defoaming agent, 1-3 parts of film forming agent and 1-3 parts of preservative. Preferably, the formaldehyde-removing environment-friendly new material comprises the following components in parts by weight: modified nano TiO27-10 parts of graphene oxide, 2-5 parts of sodium percarbonate, 80-100 parts of activated carbon, 5-8 parts of amino acid mixed liquor, 30-40 parts of aqueous epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, 1-3 parts of defoaming agent, 1-3 parts of film forming agent and 1-3 parts of preservative.
In this embodiment, the thickener is one or more of polyurethane, starch, and hydroxymethyl cellulose; the dispersing agent is sodium polyacrylate; the emulsifier is one or more of dodecyl polyoxyethylene ether ammonium sulfate, dodecyl diphenyl ether sodium disulfonate and dodecyl sodium sulfate; the defoaming agent is one or more of mineral oil or polydimethylsiloxane; the film forming agent is a protein film forming agent or an acrylic resin film forming agent.
A preparation method of a formaldehyde-removing environment-friendly new material comprises the following steps:
s1, adding water and modified nano TiO2Adding activated carbonAdding an emulsifier into an emulsifying kettle, and stirring at a high speed until the emulsifier is dissolved to prepare a pre-emulsion;
s2, adding the waterborne epoxy resin and the dispersing agent into a reaction kettle, and dispersing for 20-30min under the condition of 300-400rpm to prepare a waterborne epoxy resin system;
s3, adding the pre-emulsion into a water-based epoxy resin system, uniformly stirring, adding graphene oxide, and dispersing for 30-40min under the conditions of 400-550 rpm;
s4, adding water and the rest raw materials into the reaction kettle, stirring at a low speed for 60-90min, filtering and discharging to obtain a finished product.
The preparation method of the novel environment-friendly formaldehyde-removing material firstly prepares the pre-emulsion so that the modified nano TiO in the novel environment-friendly formaldehyde-removing material2The distribution is more uniform, the performance is stable, the product stability is improved, and the preparation method has strong operability.
Example 1
The embodiment provides a novel environment-friendly formaldehyde-removing material which comprises the following components in percentage by weight: Y-N doped nano TiO25 parts of graphene oxide, 1 part of sodium percarbonate, 50 parts of activated carbon, 1 part of amino acid mixed solution, 10 parts of aqueous epoxy resin, 1 part of thickening agent, 1 part of dispersing agent, 1 part of emulsifying agent, 1 part of defoaming agent, 1 part of film forming agent and 1 part of preservative.
A preparation method of a formaldehyde-removing environment-friendly new material comprises the following steps:
s1, adding water and modified nano TiO2Adding activated carbon into an emulsifying kettle, adding an emulsifier, and stirring at a high speed until the emulsifier is dissolved to prepare a pre-emulsion;
s2, adding the waterborne epoxy resin and the dispersing agent into a reaction kettle, and dispersing for 25min at 350rpm to prepare a waterborne epoxy resin system;
s3, adding the pre-emulsion into a water-based epoxy resin system, uniformly stirring, adding graphene oxide, and dispersing for 35min at 450 rpm;
and S4, adding water and the rest raw materials into the reaction kettle, stirring at a low speed for 80min, filtering and discharging to obtain a finished product.
The finished material produced by the above method in this example was designated as test piece a.
Example 2
The embodiment provides a novel environment-friendly formaldehyde-removing material which comprises the following components in percentage by weight: Y-N doped nano TiO215 parts of graphene oxide, 10 parts of sodium percarbonate, 100 parts of activated carbon, 10 parts of amino acid mixed solution, 50 parts of aqueous epoxy resin, 5 parts of thickening agent, 5 parts of dispersing agent, 5 parts of emulsifying agent, 5 parts of defoaming agent, 5 parts of film forming agent and 5 parts of preservative.
The preparation method of the environment-friendly novel material for removing formaldehyde in the embodiment is the same as that of the embodiment 1.
The finished material produced by the above method in this example was designated as test piece B.
Example 3
The embodiment provides a novel environment-friendly formaldehyde-removing material which comprises the following components in percentage by weight: Y-N doped nano TiO210 parts of graphene oxide, 5 parts of sodium percarbonate, 70 parts of activated carbon, 5 parts of amino acid mixed solution, 20 parts of aqueous epoxy resin, 3 parts of thickening agent, 3 parts of dispersing agent, 3 parts of emulsifying agent, 3 parts of defoaming agent, 3 parts of film forming agent and 3 parts of preservative.
The preparation method of the environment-friendly novel material for removing formaldehyde in the embodiment is the same as that of the embodiment 1.
The finished material obtained by the above method in this example is designated C.
Example 4
The embodiment provides a novel environment-friendly formaldehyde-removing material which comprises the following components in percentage by weight: Y-N doped nano TiO27 parts of graphene oxide, 2 parts of sodium percarbonate, 80 parts of activated carbon, 8 parts of amino acid mixed solution, 30 parts of aqueous epoxy resin, 3 parts of thickening agent, 3 parts of dispersing agent, 3 parts of emulsifying agent, 3 parts of defoaming agent, 3 parts of film forming agent and 3 parts of preservative.
The preparation method of the environment-friendly novel material for removing formaldehyde in the embodiment is the same as that of the embodiment 1.
The finished material obtained by the above method in this example is denoted as D.
Example 5
The embodiment provides a novel environment-friendly formaldehyde-removing materialThe paint comprises the following components in percentage by weight: Y-N doped nano TiO212 parts of graphene oxide, 9 parts of sodium percarbonate, 90 parts of activated carbon, 9 parts of amino acid mixed solution, 45 parts of aqueous epoxy resin, 4 parts of thickening agent, 4 parts of dispersing agent, 4 parts of emulsifying agent, 4 parts of defoaming agent, 4 parts of film forming agent and 4 parts of preservative.
The preparation method of the environment-friendly novel material for removing formaldehyde in the embodiment is the same as that of the embodiment 1.
The finished material obtained in this example by the above process is designated E.
Example 6
The embodiment provides a novel environment-friendly formaldehyde-removing material which comprises the following components in percentage by weight: Y-N doped nano TiO213 parts of graphene oxide, 8 parts of sodium percarbonate, 75 parts of activated carbon, 7 parts of amino acid mixed solution, 45 parts of aqueous epoxy resin, 3 parts of thickening agent, 3 parts of dispersing agent, 3 parts of emulsifier, 3 parts of defoaming agent, 3 parts of film forming agent and 3 parts of preservative.
The preparation method of the environment-friendly novel material for removing formaldehyde in the embodiment is the same as that of the embodiment 1.
The finished material obtained in this example by the above process is designated F.
Comparative example 1
The comparison example provides a new formaldehyde-removing environment-friendly material which comprises the following components: the difference from example 1 is that ordinary nano TiO is used2. The preparation of the new environment-friendly formaldehyde-removing material in the comparative example is the same as that in example 1, and the prepared finished material is marked as G1.
Comparative example 2
The comparison example provides a new formaldehyde-removing environment-friendly material which comprises the following components: the difference from example 1 is that modified nano TiO is not included2. The preparation of the new environment-friendly formaldehyde-removing material in the comparative example is the same as that in example 1, and the prepared finished material is marked as G2.
Examples of the experiments
The materials obtained in the examples 1 to 6 and the materials obtained in the comparative examples 1 to 2 are respectively placed in 8 same closed spaces, the formaldehyde content and the placing time in the closed spaces are the same, the formaldehyde content before and after placing is respectively detected,wherein the formaldehyde content before standing is 0.3mg/m3The data obtained are shown in table 1:
TABLE 1 Performance testing of the materials of the examples and comparative examples
Figure BDA0003408111560000101
As can be seen from the data in Table 1: the formaldehyde removing material is obviously better than two formaldehyde removing materials in the prior art, has the effects of lasting, stable and efficient formaldehyde removal, and is suitable for popularization and use.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The novel environment-friendly formaldehyde-removing material is characterized by comprising the following raw materials in parts by weight:
modified nano TiO25-15 parts of graphene oxide, 1-10 parts of sodium percarbonate, 50-100 parts of activated carbon, 1-10 parts of amino acid mixed liquor, 10-50 parts of water-based epoxy resin, 1-5 parts of thickening agent, 1-5 parts of dispersing agent, 1-5 parts of emulsifying agent, 1-5 parts of defoaming agent, 1-5 parts of film forming agent and 1-5 parts of preservative.
2. The new environment-friendly formaldehyde-removing material as claimed in claim 1, wherein the modified nano TiO is selected from the group consisting of TiO, and TiO22Comprises the following steps: Y-N doped nano TiO2。
3. The new formaldehyde-removing environment-friendly material as claimed in claim 2, characterized by comprising the following raw materials in parts by weight: modified nano TiO25-10 parts of graphene oxide, 1-5 parts of sodium percarbonate, 70-100 parts of activated carbon, 5-10 parts of amino acid mixed solution, 20-40 parts of water-based epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, and defoaming agent1-3 parts of agent, 1-3 parts of film forming agent and 1-3 parts of preservative.
4. The new environment-friendly formaldehyde-removing material as claimed in claim 3, which is characterized by comprising the following raw materials in parts by weight: modified nano TiO27-10 parts of graphene oxide, 2-5 parts of sodium percarbonate, 80-100 parts of activated carbon, 5-8 parts of amino acid mixed liquor, 30-40 parts of aqueous epoxy resin, 1-3 parts of thickening agent, 1-3 parts of dispersing agent, 1-3 parts of emulsifying agent, 1-3 parts of defoaming agent, 1-3 parts of film forming agent and 1-3 parts of preservative.
5. The new environment-friendly formaldehyde-removing material as claimed in claim 1, wherein the modified nano TiO is selected from the group consisting of TiO, and TiO22The preparation method comprises the following steps:
(1) dissolving tetrabutyl titanate in absolute ethyl alcohol, adding glacial acetic acid, and uniformly mixing to obtain a solution A;
(2) dissolving a solution containing gadolinium element and a solution containing nitrogen element in absolute ethyl alcohol, and adjusting the pH of the solutions to 3-4 to prepare a solution B;
(3) slowly dripping the solution B into the solution A, aging the solution after the solution is changed into gel from sol, and then drying and calcining the gel to obtain the Y-N doped nano TiO2And (3) powder.
6. The new formaldehyde-removing environment-friendly material as claimed in claim 1, wherein the thickener is one or more of polyurethane, starch and hydroxymethyl cellulose; the dispersant is sodium polyacrylate.
7. The new environment-friendly formaldehyde-removing material as claimed in claim 1, wherein the emulsifier is one or more of ammonium laureth sulfate, sodium laureth sulfate and sodium laureth sulfate; the defoaming agent is one or more of mineral oil or polydimethylsiloxane; the film forming agent is a protein film forming agent or an acrylic resin film forming agent.
8. The preparation method of the novel environment-friendly formaldehyde-removing material as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:
s1, adding water and modified nano TiO2Adding activated carbon into an emulsifying kettle, adding an emulsifier, and stirring at a high speed until the emulsifier is dissolved to prepare a pre-emulsion;
s2, adding the waterborne epoxy resin and the dispersing agent into a reaction kettle, and dispersing to obtain a waterborne epoxy resin system;
s3, adding the pre-emulsion into a water-based epoxy resin system, uniformly stirring, adding graphene oxide, and dispersing;
s4, adding water and the rest raw materials into the reaction kettle, stirring at a low speed for 60-90min, filtering and discharging to obtain a finished product.
9. The method for preparing the new environment-friendly material for removing formaldehyde as claimed in claim 8, wherein in S2, the dispersion is performed at 300-400rpm for 20-30 min.
10. The method for preparing the new environment-friendly material for removing formaldehyde as claimed in claim 8, wherein in S3, the dispersion is performed for 30-40min at 400-550 rpm.
CN202111519138.9A 2021-12-13 2021-12-13 Formaldehyde-removing environment-friendly new material and preparation method thereof Pending CN114015326A (en)

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CN116496679A (en) * 2023-06-30 2023-07-28 广州市哲铭油墨涂料有限公司 Multifunctional environment-friendly paint and preparation method thereof
CN116496679B (en) * 2023-06-30 2023-09-12 广州市哲铭油墨涂料有限公司 Multifunctional environment-friendly paint and preparation method thereof

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