CN116764600B - Formaldehyde-purifying antibacterial agent, and preparation method and application thereof - Google Patents
Formaldehyde-purifying antibacterial agent, and preparation method and application thereof Download PDFInfo
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- CN116764600B CN116764600B CN202310866478.1A CN202310866478A CN116764600B CN 116764600 B CN116764600 B CN 116764600B CN 202310866478 A CN202310866478 A CN 202310866478A CN 116764600 B CN116764600 B CN 116764600B
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- titanium dioxide
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- 238000002360 preparation method Methods 0.000 title claims abstract description 81
- 239000003242 anti bacterial agent Substances 0.000 title claims abstract description 74
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 108
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 83
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 66
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 62
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 61
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 60
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 54
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 53
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 238000001179 sorption measurement Methods 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 229940070527 tourmaline Drugs 0.000 claims description 49
- 229910052613 tourmaline Inorganic materials 0.000 claims description 49
- 239000011032 tourmaline Substances 0.000 claims description 49
- 239000002994 raw material Substances 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 25
- 229920001661 Chitosan Polymers 0.000 claims description 19
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 claims description 17
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 claims description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 15
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 claims description 15
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 15
- 239000011777 magnesium Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 229960003080 taurine Drugs 0.000 claims description 8
- YYXHRUSBEPGBCD-UHFFFAOYSA-N azanylidyneiron Chemical compound [N].[Fe] YYXHRUSBEPGBCD-UHFFFAOYSA-N 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920002101 Chitin Polymers 0.000 claims description 2
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 37
- 238000000746 purification Methods 0.000 abstract description 16
- 230000002688 persistence Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 115
- 230000000052 comparative effect Effects 0.000 description 19
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 239000002245 particle Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 239000004599 antimicrobial Substances 0.000 description 12
- 239000000123 paper Substances 0.000 description 12
- 238000000227 grinding Methods 0.000 description 11
- 229920000877 Melamine resin Polymers 0.000 description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 10
- 229910002011 hydrophilic fumed silica Inorganic materials 0.000 description 10
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 7
- 230000000844 anti-bacterial effect Effects 0.000 description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- -1 oxygen ions Chemical class 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 4
- 239000003053 toxin Substances 0.000 description 4
- 231100000765 toxin Toxicity 0.000 description 4
- 108700012359 toxins Proteins 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000006683 Mannich reaction Methods 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000002262 Schiff base Substances 0.000 description 1
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- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229940054190 hydroxypropyl chitosan Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
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- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The application discloses an aldehyde-purifying antibacterial agent, a preparation method and application thereof, and belongs to the field of purification. A clean aldehyde antibacterial agent comprises the following components in percentage by mass: 10-20% of an adsorption carrier; 75-87% of a capturing agent; 2-4% of silicon dioxide modified cyclic silicate; 0.1-0.5% of hydrophilic graphene; mixing and doping 0.5-1.5% of nano titanium dioxide. The preparation method of the formaldehyde-purifying antibacterial agent comprises the following steps: uniformly stirring an adsorption carrier and a capturing agent, then adding silicon dioxide modified cyclic silicate, uniformly stirring, then adding hydrophilic graphene and mixed doped titanium dioxide, vibrating and dispersing, and filtering to obtain the formaldehyde-purifying antibacterial agent. The method has the effect of improving the persistence of the aldehyde purifying effect of the plate.
Description
Technical Field
The application relates to the field of purification, in particular to an aldehyde-purifying antibacterial agent, a preparation method and application thereof.
Background
For the home decoration and furniture industry, the technical development is not only innovations in style design and structural functions, but also is particularly important to break through in safety so as to embody the people-oriented concept. At present, the production of the industry is not separated from the production of boards for furniture, the safety problem of the boards is mainly reflected in formaldehyde, and as raw materials such as glue, ink and the like are usually used for producing the boards, the glue and the ink are often sources of formaldehyde pollution.
Taking melamine boards as an example, common melamine boards are made of melamine resin into glue, the surface decoration paper is glued and then is compounded on the surface of the wood board, and the melamine glue releases formaldehyde to pollute the environment and harm the body of a user.
Aiming at the formaldehyde problem of the plate, an aldehyde-purifying plate is introduced in the market, and the release of formaldehyde is inhibited by adding activated carbon, cellulose and other adsorption materials into the plate or the plate raw material, so that the aldehyde-purifying and odor-purifying effects are achieved. However, in the practical use process, the aldehyde-purifying plate has low aldehyde-purifying persistence, namely, the later odor-purifying effect is poor.
Disclosure of Invention
In order to improve the persistence of the aldehyde purifying effect of the plate, the application provides an aldehyde purifying antibacterial agent, a preparation method and application thereof.
In a first aspect, the present application provides a formaldehyde-purifying antibacterial agent, which adopts the following technical scheme:
a clean aldehyde antibacterial agent comprises the following components in percentage by mass:
10-20% of adsorption carrier;
75-87% of a capturing agent;
2-4% of silicon dioxide modified cyclic silicate;
0.1 to 0.5 percent of hydrophilic graphene;
mixing and doping nano titanium dioxide 0.5-1.5%.
Through adopting above-mentioned technical scheme, clean aldehyde antibacterial agent can add in the panel raw and other materials such as glue, printing ink, adsorbs and decompose formaldehyde from panel raw and other materials inside, reduces the release of formaldehyde from the source, also can play good clean aldehyde and the odor removal effect to surrounding environment simultaneously to realize air-purifying's function.
The nanometer titanium dioxide has the photocatalysis function, converts the light energy into chemical energy, generates hydroxyl free radicals and negative oxygen ions, and has the function of decomposing organic toxins such as formaldehyde, the application adopts a mode of co-doping and combining hydrophilic graphene on the basis of the nanometer titanium dioxide, so that the forbidden band width of the nanometer titanium dioxide is reduced, the energy required for excitation is small, the photocatalysis wavelength moves to visible light and infrared light, the conductivity of the hydrophilic graphene is good, and the electron migration is promoted, so that the demand of the nanometer titanium dioxide for light is low during catalysis, the formaldehyde removal effect can be exerted at night or in dark environment, the catalytic decomposition activity of formaldehyde is greatly improved, and meanwhile, the nanometer titanium dioxide has good mildew-proof antibacterial effect.
The cyclic silicate has piezoelectricity and thermoelectric property, can release negative oxygen ions through energy excitation, and decomposes formaldehyde; the cyclic silicate modified by the silicon dioxide has good dispersibility, the stability of the clean aldehyde antibacterial agent system is improved, and the active site of the silicon dioxide provides adsorption points for the mixed doped nano titanium dioxide and the hydrophilic graphene, so that the mixed doped nano titanium dioxide, the hydrophilic graphene and the silicon dioxide modified cyclic silicate are combined with each other to cooperatively play a continuous and remarkable aldehyde removing effect, and further the raw material of the plate and the clean aldehyde effect of the plate using the clean aldehyde antibacterial agent are high in persistence.
In addition, the capturing agent can react with free formaldehyde to quickly lock the formaldehyde, so as to assist in achieving the effect of efficiently removing the formaldehyde.
Optionally, the mixed doped nano titanium dioxide comprises the following components in percentage by mass:
10-15% of iron-nitrogen co-doped nano titanium dioxide;
60% -80% of nitrogen doped nano titanium dioxide;
10 to 25 percent of nano titanium dioxide.
By adopting the technical scheme, the mixed doped nano titanium dioxide takes nitrogen doped nano titanium dioxide as a main material and iron nitrogen co-doped nano titanium dioxide and nano titanium dioxide as auxiliary materials, and can be well matched with the silicon dioxide modified cyclic silicate, so that the continuous formaldehyde removal effect is cooperatively generated.
Optionally, the preparation raw materials of the mixed doped nano titanium dioxide comprise nano titanium dioxide, N-dimethylformamide and ferric chloride with the mass ratio of 1 (0.58-0.78) (0.07-0.13).
By adopting the technical scheme, the prepared mixed doped nano titanium dioxide comprises iron-nitrogen co-doped nano titanium dioxide, nitrogen-doped nano titanium dioxide and nano titanium dioxide under the conditions of the preparation raw materials and corresponding proportions, and the formaldehyde removal effect is high in persistence.
Optionally, the preparation raw materials of the silicon dioxide modified cyclic silicate comprise the following raw materials in percentage by mass:
45-50% of magnesium tourmaline;
15-20% of ferroelectric stone;
20-25% of calcium-magnesium tourmaline;
10-15% of hydrophilic silicon dioxide.
By adopting the technical scheme, the tourmaline belongs to the ring silicate, has excellent effect of releasing negative oxygen ions, and takes part in the balance between the energy required by exciting the tourmaline to release the negative oxygen ions and the energy required by mixing and doping nano titanium dioxide photocatalysis by the magnesium tourmaline, the ferroelectric tourmaline and the calcium magnesium tourmaline with specific proportions, so that the formaldehyde removal effect is remarkable; the agglomeration problem exists when the magnesium tourmaline, the ferroelectric tourmaline and the calcium magnesium tourmaline are matched, particularly the agglomeration phenomenon is obvious after the combination with the mixed doped nano titanium dioxide, so that hydrophilic silicon dioxide is added to modify the tourmaline system, the dispersibility of the tourmaline system is improved, the stability of the formaldehyde-purifying antibacterial agent system after the combination with the mixed doped nano titanium dioxide is improved, and the requirement on the sustainability of the formaldehyde-removing effect is met.
Optionally, the hydrophilic graphene is one or more of carboxylated graphene, sulfonated graphene and hydroxylated graphene.
By adopting the technical scheme, although no additional water is added in the components of the formaldehyde-purifying antibacterial agent, water residues are unavoidable in each component, so that the components are required to have hydrophilic properties for adaptation. Carboxylated graphene, sulfonated graphene and hydroxylated graphene all have good hydrophilicity, so that the binding property of the carboxylated graphene, sulfonated graphene and hydroxylated graphene and the mixed doped nano titanium dioxide is good, the light utilization rate of the mixed doped nano titanium dioxide is improved, the carboxylated graphene, sulfonated graphene and hydroxylated graphene have good adsorption effect on volatile organic compounds, and organic toxins such as formaldehyde are locked, so that the silica modified cyclic silicate and the mixed doped nano titanium dioxide can quickly and effectively decompose the organic toxins.
Optionally, the capture agent is one or more of ethylene urea, taurine and urea.
By adopting the technical scheme, the taurine can be used as a pleasant agent in space environment, so that people feel pleasant in the environment sprayed with the product, and the reaction of the effective components in the formaldehyde-purifying antibacterial agent and free aldehyde groups can be catalyzed, so that free formaldehyde is captured and consumed; urea and formaldehyde can also react to capture formaldehyde; the ethylene urea and formaldehyde are subjected to Mannich reaction to generate stable Mannich base, so that the effect of quickly absorbing and locking formaldehyde is achieved, and the formaldehyde removing effect is improved in cooperation with the mixed doped nano titanium dioxide.
Preferably, the capturing agent comprises ethylene urea, taurine and urea with the mass ratio of (0.12-0.38) to (1-1.9).
By adopting the technical scheme, the ethylene urea, the taurine and the urea are compounded, and the continuous purifying effect of the formaldehyde-purifying antibacterial agent is obviously improved.
Optionally, the adsorption carrier is one or more of chitosan, carboxymethyl chitosan, hydroxymethyl chitosan and chitin.
Preferably, the adsorption carrier is carboxymethyl chitosan.
By adopting the technical scheme, the carboxymethyl chitosan has good hydrophilcity, good antibacterial and mildew-proof effects, also has the function of locking formaldehyde, and has reversibility with Schiff base reaction of formaldehyde, so that the formaldehyde removal persistence is better.
In a second aspect, the preparation method of the formaldehyde-purifying antibacterial agent provided by the application adopts the following technical scheme:
a method for preparing an antibacterial agent for purifying aldehyde, comprising the following steps:
uniformly stirring an adsorption carrier and a capturing agent, then adding silicon dioxide modified cyclic silicate, uniformly stirring, then adding hydrophilic graphene and mixed doped titanium dioxide, vibrating and dispersing, and filtering to obtain the formaldehyde-purifying antibacterial agent.
By adopting the technical scheme, the components are added in sequence, the components in the formaldehyde-purifying antibacterial agent are well dispersed, and the mixed nano titanium dioxide, the hydrophilic graphene and the silicon dioxide modified cyclic silicate are fully combined with each other, so that the formaldehyde-purifying antibacterial agent can remove formaldehyde efficiently and for a long time.
Optionally, the preparation method of the silicon dioxide modified cyclic silicate comprises the following steps:
mixing magnesium tourmaline, ferroelectric tourmaline and calcium magnesium tourmaline, pulverizing into 600-900 mesh powder, adding hydrophilic silicon dioxide, and grinding to 2500-3500 mesh powder to obtain silicon dioxide modified cyclic silicate.
Optionally, the preparation method of the mixed doped modified nano titanium dioxide comprises the following steps:
mixing nano titanium dioxide, N-dimethylformamide, ferric chloride and deionized water, grinding and dispersing to obtain grinding slurry, drying the grinding slurry, calcining for 3-6 hours at 500-600 ℃, and then crushing and grinding to the particle size of 60-80nm to obtain the mixed doped modified nano titanium dioxide.
In a third aspect, the present application provides a glue that adopts the following technical scheme:
the glue comprises an aldehyde-purifying antibacterial agent, wherein the dosage of the aldehyde-purifying antibacterial agent accounts for 7.5-11% of the dosage of the glue.
By adopting the technical scheme, the glue such as melamine adhesive and other varieties often have the harm of releasing formaldehyde, and formaldehyde is restrained from the source by adding the formaldehyde-purifying antibacterial agent, so that the use safety of the glue is improved.
In a fourth aspect, the present application provides an ink according to the following technical solution:
an ink comprises an aldehyde-free antibacterial agent, wherein the use amount of the aldehyde-free antibacterial agent accounts for 5% -8% of the use amount of the ink.
By adopting the technical scheme, the addition of the formaldehyde-purifying antibacterial agent is helpful for further reducing formaldehyde emission for the edge sealing ink of the plate.
In a fifth aspect, the present application provides a clean aldehyde plate, which adopts the following technical scheme:
the formaldehyde-cleaning plate comprises a substrate and impregnated paper, wherein the impregnated paper is formed by impregnating paper in glue and drying, and the impregnated paper is bonded on the substrate through hot pressing.
By adopting the technical scheme, the formaldehyde risk brought by the gummed paper board is effectively reduced.
In summary, the present application has the following beneficial effects:
1. the formaldehyde-purifying antibacterial agent can be added into raw materials of plates such as glue and printing ink, formaldehyde is adsorbed and decomposed from the inside of the raw materials of the plates, formaldehyde release is reduced from the source, and good formaldehyde-purifying and odor-purifying effects can be achieved for the surrounding environment, so that the air-purifying function is realized. The mixed nano titanium dioxide, the hydrophilic graphene and the silicon dioxide modified cyclic silicate are combined with each other to cooperatively play a continuous and remarkable aldehyde removal effect, so that the plate raw material and the plate with the aldehyde-purifying antibacterial agent are high in aldehyde-purifying effect sustainability.
2. The tourmaline system is modified by adding hydrophilic silicon dioxide while the magnesium tourmaline, the ferroelectric tourmaline and the calcium magnesium tourmaline are matched, so that the dispersibility of the tourmaline system is improved, the stability of the formaldehyde-purifying antibacterial agent system after being combined with the mixed nano titanium dioxide is improved, and the requirement on the sustainability of the formaldehyde-removing effect is met.
Detailed Description
The present application is described in further detail below.
Preparation example
Preparation example 1
A silica-modified cyclic silicate comprising the following raw materials:
45g of magnesium tourmaline, 15g of ferroelectric tourmaline, 25g of calcium magnesium tourmaline and 15g of hydrophilic fumed silica.
Hydrophilic fumed silica is derived from winning a150.
The preparation method of the silicon dioxide modified cyclic silicate comprises the following steps:
mixing magnesium tourmaline, ferroelectric tourmaline and calcium magnesium tourmaline, mechanically pulverizing into 600-750 mesh powder, adding hydrophilic fumed silica, and grinding to 3200-3500 mesh powder to obtain silica modified cyclic silicate.
Preparation example 2
A silica-modified cyclic silicate comprising the following raw materials:
50g of magnesium tourmaline, 20g of ferroelectric tourmaline, 20g of calcium magnesium tourmaline and 10g of hydrophilic fumed silica.
Hydrophilic fumed silica is derived from winning a150.
The preparation method of the silicon dioxide modified cyclic silicate comprises the following steps:
mixing magnesium tourmaline, ferroelectric tourmaline and calcium magnesium tourmaline, mechanically pulverizing into 750-900 mesh powder, adding hydrophilic fumed silica, and grinding to 2500-2800 mesh powder to obtain silica modified cyclic silicate.
Preparation example 3
This preparation differs from preparation 1 in that the starting materials for the silica-modified cyclic silicate are different.
A silica-modified cyclic silicate comprising the following raw materials:
48g of magnesium tourmaline, 16g of ferroelectric tourmaline, 24g of calcium magnesium tourmaline and 12g of hydrophilic fumed silica.
Hydrophilic fumed silica is derived from winning a150.
Preparation example 4
This preparation differs from preparation 1 in that the starting materials for the silica-modified cyclic silicate are different.
A silica-modified cyclic silicate comprising the following raw materials:
48g of magnesium tourmaline, 16g of lithium tourmaline, 24g of calcium magnesium tourmaline and 12g of hydrophilic fumed silica.
Hydrophilic fumed silica is derived from winning a150.
Preparation example 5
This preparation differs from preparation 1 in that the starting materials for the silica-modified cyclic silicate are different.
A silica-modified cyclic silicate comprising the following raw materials:
48g of magnesium tourmaline, 16g of ferroelectric tourmaline, 24g of calcium magnesium tourmaline and 12g of hydrophobic fumed silica.
The hydrophobic fumed silica is derived from winning R972.
Preparation example 6
The mixed doped nano titanium dioxide comprises the following raw materials:
100g of nano titanium dioxide, 58g of N, N-dimethylformamide, 7g of ferric chloride and 10g of deionized water.
The preparation method of the mixed doped nano titanium dioxide comprises the following steps:
mixing nano titanium dioxide, N-dimethylformamide, ferric chloride and deionized water, grinding and dispersing for 6 hours to obtain grinding slurry, drying the grinding slurry at 105 ℃, calcining for 4 hours at 600 ℃, and then crushing and grinding to the particle size of 60-80nm to obtain the mixed doped modified nano titanium dioxide.
The main components of the obtained mixed doped modified nano titanium dioxide are detected to contain 15% of iron-nitrogen co-doped nano titanium dioxide, 60% of nitrogen-doped nano titanium dioxide and 25% of nano titanium dioxide according to mass percentage.
Preparation example 7
The present preparation example differs from preparation example 6 in that the raw materials of the mixed doped nano titanium dioxide are different.
The mixed doped nano titanium dioxide comprises the following raw materials:
100g of nano titanium dioxide, 78g of N, N-dimethylformamide, 13g of ferric chloride and 10g of deionized water.
The main components of the obtained mixed doped modified nano titanium dioxide are detected to contain 10% of iron-nitrogen co-doped nano titanium dioxide, 80% of nitrogen-doped nano titanium dioxide and 10% of nano titanium dioxide according to mass percent.
Preparation example 8
The present preparation example differs from preparation example 6 in that the raw materials of the mixed doped nano titanium dioxide are different.
The mixed doped nano titanium dioxide comprises the following raw materials:
100g of nano titanium dioxide, 69g of N, N-dimethylformamide, 10g of ferric chloride and 10g of deionized water.
The main components of the obtained mixed doped modified nano titanium dioxide are detected to contain 10% of iron-nitrogen co-doped nano titanium dioxide, 70% of nitrogen-doped nano titanium dioxide and 20% of nano titanium dioxide according to mass percentage.
Preparation example 9
The present preparation example differs from preparation example 6 in that the raw materials of the mixed doped nano titanium dioxide are different.
The mixed doped nano titanium dioxide comprises the following raw materials:
100g of nano titanium dioxide, 7g of ferric chloride and 10g of deionized water.
N, N-dimethylformamide is not added in the preparation method of the mixed doped nano titanium dioxide.
Comparative preparation example 1
This comparative preparation differs from preparation 1 in the composition of the silica-modified cyclic silicate.
A silica modified cyclic silicate comprising the following components:
48g of magnesium tourmaline, 16g of ferroelectric tourmaline and 24g of calcium magnesium tourmaline.
Examples
Example 1
An antimicrobial agent for purifying aldehydes, comprising the following components:
100g of adsorption carrier, 870g of capturing agent, 20g of silicon dioxide modified cyclic silicate, 1g of hydrophilic graphene and 9g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
The preparation method of the formaldehyde-purifying antibacterial agent comprises the following steps:
stirring the adsorption carrier and the capturing agent for 10min to uniformly mix, then adding the silicon dioxide modified cyclic silicate, stirring for 20min to uniformly mix, then adding the hydrophilic graphene and the mixed doped titanium dioxide, oscillating and dispersing for 1h, filtering with a 60-mesh filter bag, and sub-packaging to obtain the formaldehyde-purifying antibacterial agent.
Example 2
This example differs from example 1 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
200g of adsorption carrier, 750g of trapping agent, 30g of silicon dioxide modified cyclic silicate, 5g of hydrophilic graphene and 15g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Example 3
This example differs from example 1 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Examples 4 to 10
Examples 4 to 9 differ from example 3 in the source of the silica modified cyclic silicate or the mixed doped nano titania in the components of the net aldehyde antibacterial agent as shown in table 1.
| Silica modified cyclic silicate sources | Mixed doped nano titania source | |
| Example 4 | Preparation example 2 | Preparation example 6 |
| Example 5 | Preparation example 3 | Preparation example 6 |
| Example 6 | Preparation example 4 | Preparation example 6 |
| Example 7 | Preparation example 5 | Preparation example 6 |
| Example 8 | Preparation example 1 | Preparation example 7 |
| Example 9 | Preparation example 1 | Preparation example 8 |
| Example 10 | Preparation example 1 | Preparation example 9 |
Example 11
This example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is hydroxypropyl chitosan, and the molecular weight is 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Example 12
This example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Example 13
This example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent comprises 791g of ethylene urea, 1g of taurine and 8g of urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Example 14
This example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The capturing agent comprises 782g of ethylene urea, 3g of taurine and 15g of urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Comparative example
Comparative example 1
This comparative example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 840g of capturing agent, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Comparative example 2
This comparative example differs from example 3 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from comparative preparation 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Comparative example 3
This example differs from example 1 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of capturing agent, 40g of silicon dioxide modified cyclic silicate, 3g of graphene and 5g of mixed doped nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The particle size of the graphene is 0.8-1.2 nm.
The mixed doped nano titania was derived from preparation 6.
Comparative example 4
This example differs from example 1 in the composition of the clean aldehyde antibacterial agent.
An antimicrobial agent for purifying aldehydes, comprising the following components:
152g of adsorption carrier, 800g of trapping agent, 40g of silicon dioxide modified cyclic silicate, 3g of hydrophilic graphene and 5g of nano titanium dioxide.
The adsorption carrier is carboxymethyl chitosan with molecular weight of 1200.
The trapping agent is ethylene urea.
The silica modified cyclic silicate was derived from preparation example 1.
The hydrophilic graphene is carboxylated graphene, the carboxyl content is 4%, and the particle size is 0.8-1.2 nm.
The particle size of the nano titanium dioxide is 60-80 nm.
Application example
Application example 1
Glue, comprising the following raw materials:
1000g of melamine adhesive and 75g of formaldehyde-purifying antibacterial agent.
The density of the melamine adhesive is 1.1g/cm 3 Viscosity 9000 mpa.s.
The clean aldehyde antibacterial agent is derived from example 3.
The preparation method of the glue comprises the following steps:
and (3) uniformly stirring and mixing the melamine adhesive and the formaldehyde-purifying antibacterial agent to obtain the glue.
Application example 2
The difference between this application example and application example 1 is that the raw materials of the glue are different.
Glue, comprising the following raw materials:
1000g of melamine adhesive and 110g of formaldehyde-purifying antibacterial agent.
The density of the melamine adhesive is 1.1g/cm 3 Viscosity 9000 mpa.s.
The clean aldehyde antibacterial agent is derived from example 3.
Application example 3
An ink comprising the following raw materials:
500g of PVC paste resin and 25g of formaldehyde-purifying antibacterial agent.
The clean aldehyde antibacterial agent is derived from example 3.
The preparation method of the ink comprises the following steps:
and uniformly stirring and mixing the PVC paste resin and the formaldehyde-purifying antibacterial agent to obtain the printing ink.
Application example 4
The difference between this application example and application example 3 is that the ink is different in raw material.
An ink comprising the following raw materials:
500g of PVC paste resin and 40g of formaldehyde-purifying antibacterial agent.
The clean aldehyde antibacterial agent is derived from example 3.
Application examples
The formaldehyde-cleaning plate comprises a substrate and impregnated paper, wherein the impregnated paper is adhered to the surface of the substrate.
The base plate is a wood fiber board.
The preparation method of the formaldehyde-purifying plate comprises the following steps:
soaking paper in glue, taking out and drying to obtain impregnated paper, wherein the sizing amount of the impregnated paper is 240g/m 2 ；
And hot-pressing the impregnated paper on the substrate, so that the impregnated paper is adhered to the substrate, and curing to obtain the formaldehyde-free plate.
Performance detection
To test the performance of the clean aldehyde antibacterial agent, a plurality of clean aldehyde plates were fabricated according to the application examples, the difference between the different clean aldehyde plates was that the clean aldehyde antibacterial agent in the glue was derived from the different examples or comparative examples, namely, the clean aldehyde plate containing the clean aldehyde antibacterial agent of example 1, the clean aldehyde plate containing the clean aldehyde antibacterial agent of example 2, … …, and so on were fabricated, and the clean aldehyde plate containing the clean aldehyde antibacterial agent of the different examples or comparative examples was obtained.
Formaldehyde purification efficiency and formaldehyde purification durability: referring to JC/T1074-2008 purifying performance of coating materials with indoor air purifying function, each clean aldehyde plate is used as a test sample plate, 40wt% formaldehyde solution is used as a pollution source reagent, a fluorescent lamp is not started in a test cabin during the test period, purifying efficiency and purifying durability are measured, and the test results are shown in Table 2.
TVOC purification efficiency: referring to QB/T2761-2006 method for measuring indoor air purification effect, TVOC purification efficiency was measured using each clean aldehyde plate as a purification product, and the test results are shown in Table 2.
Antibacterial durability and mildew resistance: referring to JC/T2039-2010 (antibacterial mildew-proof wooden decorative Board), antibacterial rate and mildew-proof grade are measured by taking each clean aldehyde board as a sample, and the test results are shown in Table 2.
TABLE 2
According to the test results of table 2, all of the formaldehyde purifying plates containing the formaldehyde purifying antibacterial agents of examples 1 to 3 show good formaldehyde purifying efficiency, TVOC purifying efficiency and formaldehyde purifying durability, are excellent in mold preventing and antibacterial effects, and meet the requirements of test standards.
In example 3, compared with comparative examples 1 to 4, the formaldehyde purification efficiency, TVOC purification efficiency and formaldehyde purification durability of comparative examples 1 to 4 are inferior to example 3. The purification, mildew resistance and antibacterial effects of the comparative example 1 show the importance of the cyclic silicate in the clean aldehyde antibacterial agent system, but the analysis of the comparative example 2 and the comparative example 4 is combined, the purification effect of the clean aldehyde antibacterial agent can not be fully improved by only adding the cyclic silicate and the nano titanium dioxide, the positive influence of the modification of the cyclic silicate by the silicon dioxide and the mixed doping on the nano titanium dioxide is shown, the process of preparing the glue is observed, the dispersibility of the clean aldehyde antibacterial agent from the comparative example 2 in the glue is low, and the phenomenon of local caking exists; and then combining with the comparative example 3, the effect of the hydrophilic graphene is reflected.
The comparative analysis shows that the three mixed and doped nano titanium dioxide, hydrophilic graphene and silicon dioxide modified cyclic silicate are mutually combined, so that the activities of the three can be mutually influenced, and the nano titanium dioxide and the cyclic silicate are cooperatively promoted to continuously and largely release negative oxygen ions, so that continuous and remarkable formaldehyde removal effect is cooperatively exerted.
In comparison with examples 6 to 7, the purification effect of examples 6 to 7 was inferior to that of example 3. The method shows that under the dispersion action of hydrophilic silicon dioxide, the cyclic silicate system of the specific magnesium tourmaline, the specific ferroelectric tourmaline and the specific calcium magnesium tourmaline can be cooperatively matched to obtain better capability of exciting negative oxygen ions, so that the effect and the persistence of purifying organic toxins such as formaldehyde are improved. Similarly, the purification effect of example 11 was inferior to that of example 3 in comparison with example 11 in example 3. The doping system which takes nitrogen doped nano titanium dioxide as a main material and iron and nitrogen co-doped nano titanium dioxide and nano titanium dioxide as an auxiliary material can play a beneficial promotion role of the mixed doped nano titanium dioxide on the purification effect of the formaldehyde-purifying antibacterial agent.
Compared with examples 11-12, the purifying effect is better when the carboxymethyl chitosan is used as the adsorption carrier, and the purifying effect is better when the ethylene urea is used as the capturing agent; further comparing example 3 with examples 13-14, it can be seen that the purification effect of the formaldehyde-purifying antimicrobial agent is further improved when the capturing agent is selected from ethylene urea, taurine and urea in proportion.
The present embodiment is merely illustrative of the present application and is not limiting of the present application, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as necessary, but are protected by patent laws within the scope of the claims of the present application.
Claims (7)
1. An antibacterial agent for purifying aldehyde, which is characterized in that: comprises the following components in percentage by mass:
10% -20% of an adsorption carrier;
75% -87% of a capturing agent;
2% -4% of silicon dioxide modified cyclic silicate;
0.1% -0.5% of hydrophilic graphene;
mixing and doping 0.5% -1.5% of nano titanium dioxide;
the mixed doped nano titanium dioxide comprises the following components in percentage by mass:
10% -15% of iron-nitrogen co-doped nano titanium dioxide;
60% -80% of nitrogen doped nano titanium dioxide;
10% -25% of nano titanium dioxide;
the preparation raw materials of the silicon dioxide modified cyclic silicate comprise the following raw materials in percentage by mass:
45-50% of magnesium tourmaline;
15-20% of ferroelectric stone;
20-25% of calcium-magnesium tourmaline;
10-15% of hydrophilic silicon dioxide;
the hydrophilic graphene is one or more of carboxylated graphene, sulfonated graphene and hydroxylated graphene.
2. A clean aldehyde antibacterial agent according to claim 1, wherein: the trapping agent is one or more of ethylene urea, taurine and urea.
3. A clean aldehyde antibacterial agent according to claim 1, wherein: the adsorption carrier is one or more of chitosan, carboxymethyl chitosan, hydroxymethyl chitosan and chitin.
4. A preparation method of a clean aldehyde antibacterial agent is characterized in that: a process for preparing a clean aldehyde antibacterial agent as claimed in any one of claims 1 to 3, comprising the steps of:
uniformly stirring an adsorption carrier and a capturing agent, then adding silicon dioxide modified cyclic silicate, uniformly stirring, then adding hydrophilic graphene and mixed doped titanium dioxide, vibrating and dispersing, and filtering to obtain the formaldehyde-purifying antibacterial agent.
5. A glue, characterized in that: the glue comprises the formaldehyde-purifying antibacterial agent according to any one of claims 1 to 3, wherein the dosage of the formaldehyde-purifying antibacterial agent is 7.5% -11% of the dosage of the glue.
6. An ink, characterized in that: the ink comprises the formaldehyde-purifying antibacterial agent according to any one of claims 1 to 3, wherein the dosage of the formaldehyde-purifying antibacterial agent is 5% -8% of the dosage of the ink.
7. The clean aldehyde plate is characterized in that: the adhesive-coated paper is formed by dipping paper in the glue of claim 5 and drying, and the adhesive-coated paper is bonded on the substrate by hot pressing.
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