CN115041003B - Efficient formaldehyde removal spray and preparation method thereof - Google Patents
Efficient formaldehyde removal spray and preparation method thereof Download PDFInfo
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- CN115041003B CN115041003B CN202210739544.4A CN202210739544A CN115041003B CN 115041003 B CN115041003 B CN 115041003B CN 202210739544 A CN202210739544 A CN 202210739544A CN 115041003 B CN115041003 B CN 115041003B
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- 239000007921 spray Substances 0.000 title claims abstract description 96
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title abstract description 362
- 238000001179 sorption measurement Methods 0.000 claims abstract description 26
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 150000007524 organic acids Chemical class 0.000 claims abstract description 21
- XEVRDFDBXJMZFG-UHFFFAOYSA-N carbonyl dihydrazine Chemical compound NNC(=O)NN XEVRDFDBXJMZFG-UHFFFAOYSA-N 0.000 claims abstract description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004202 carbamide Substances 0.000 claims abstract description 19
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 15
- 239000003899 bactericide agent Substances 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 6
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 claims description 26
- 229920001661 Chitosan Polymers 0.000 claims description 15
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- 229960003080 taurine Drugs 0.000 claims description 13
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000006196 deacetylation Effects 0.000 claims description 5
- 238000003381 deacetylation reaction Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 229940051250 hexylene glycol Drugs 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 6
- 238000005286 illumination Methods 0.000 abstract description 3
- 150000001299 aldehydes Chemical class 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 20
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 125000003172 aldehyde group Chemical group 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000008098 formaldehyde solution Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000000419 plant extract Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- KHSLHYAUZSPBIU-UHFFFAOYSA-M benzododecinium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 KHSLHYAUZSPBIU-UHFFFAOYSA-M 0.000 description 1
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The application discloses an efficient formaldehyde removal spray and a preparation method thereof, relates to the field of formaldehyde removal agents, and aims to solve the problems that the existing formaldehyde removal spray is severe in use condition and low in formaldehyde removal efficiency. The high-efficiency formaldehyde-removing spray is prepared from the following raw materials in percentage by weight: 1-2% of water-soluble adsorption matrix, 0.1-0.5% of ethylene urea, 0.4-0.8% of urea, 1.0-1.5% of carbazide, 2-4% of organic acid, 3-4% of bactericide, 0.1-0.3% of dispersing agent and the balance of solvent. The formaldehyde removal spray has no requirements on illumination and the like, has low requirements on formaldehyde removal conditions, and can rapidly remove formaldehyde. Meanwhile, for low-concentration formaldehyde, the formaldehyde concentration of the formaldehyde removing spray agent can be reduced to below 0.1mg/m < 3 > within 30min, and the requirements of national standards on indoor living environments are met.
Description
Technical Field
The application relates to the field of aldehyde removing agents, in particular to an efficient aldehyde removing spray and a preparation method thereof.
Background
Formaldehyde-containing substances are used in many cases for house decoration, furniture production, showcase production, and articles in vehicles. However, formaldehyde is a highly toxic substance, and in order to protect the health of the human body, it is necessary to perform an aldehyde removal treatment on a house, furniture, and articles in a vehicle, which have been just decorated, to reduce the formaldehyde concentration to a safe level or lower.
Among them, formaldehyde removal sprays are currently common agents that can remove formaldehyde, which contain the following types: (1) a photocatalyst; (2) a biological enzyme; (3) plant extract. The main raw material of the photocatalyst method is nano titanium dioxide, but the aldehyde removal effect is not ideal in the internal environment with insufficient light. The biological enzyme method has harsh use conditions and the catalytic capability is easily affected by the environment. The plant extract method has limited formaldehyde adsorption capacity and slow effect.
Thus, there is a need for an formaldehyde removal spray that has low requirements for conditions of use and is capable of rapidly removing formaldehyde.
Disclosure of Invention
In order to solve the problems of severe use conditions and low formaldehyde removal efficiency of the existing formaldehyde removal spray, the application provides a high-efficiency formaldehyde removal spray and a preparation method thereof.
In a first aspect, the application provides a high-efficiency formaldehyde-removing spray agent, which adopts the following technical scheme:
an efficient formaldehyde-removing spray is prepared from the following raw materials in percentage by weight:
water-soluble adsorption matrix: 1-2%
Ethylene urea: 0.1-0.5%
Urea: 0.4-0.8%
Carbazide: 1.0 to 1.5 percent
Organic acid: 2-4%
A bactericide: 3-4%
Dispersing agent: 0.1-0.3%
Solvent: the balance.
The water-soluble adsorption matrix is selected from substances which are soluble in water and have adsorption effects, such as carboxymethyl chitosan, carboxymethyl cellulose and the like, and can adsorb and capture harmful substances in the air, such as formaldehyde. Ethylene urea and urea contain active groups which can react with aldehyde groups, and have good elimination effect on aldehyde substances; the carbazide has strong reducibility and can rapidly neutralize aldehyde groups; the organic acid can catalyze the reaction of ethylene urea, urea and carbazide with aldehyde groups, so that aldehyde substances are rapidly eliminated, and the aldehyde removal efficiency of the aldehyde removal spray is improved. Meanwhile, the formaldehyde removal spray has no requirements on illumination and the like, and can remove formaldehyde with low concentration, so that the indoor formaldehyde concentration is reduced to 0.1mg/m 3 The requirements of national standards on indoor living environments are met.
Optionally, the high-efficiency formaldehyde-removing spray is prepared from the following raw materials in percentage by weight:
water-soluble adsorption matrix: 1 to 1.5 percent
Ethylene urea: 0.3-0.4%
Urea: 0.5-0.8%
Carbazide: 1.2-1.3%
Organic acid: 2.5-3.2%
A bactericide: 3-4%
Dispersing agent: 0.15-0.25%
Solvent: the balance.
By adopting the technical scheme, when the weight percentage of each component of the formaldehyde removal spray is within the range, the formaldehyde removal spray has the advantages of good atomization effect and excellent adsorption performance, is favorable for quickly adsorbing and decomposing formaldehyde, and further improves the formaldehyde removal efficiency of the formaldehyde removal spray. Wherein, for low concentration formaldehyde, the formaldehyde removing spray agentCan reduce formaldehyde concentration to 0.1mg/m within 15min 3 The following is given.
Optionally, the high-efficiency formaldehyde-removing spray is prepared from the following raw materials in percentage by weight:
water-soluble adsorption matrix: 1.26%
Ethylene urea: 0.345%
Urea: 0.6%
Carbazide: 1.26%
Organic acid: 2.835%
A bactericide: 3.5%
Dispersing agent: 0.2%
Solvent: 90%.
By adopting the technical scheme, when the aldehyde removal spray is prepared by the components of the aldehyde removal spray according to the weight percentage, the aldehyde removal efficiency of the aldehyde removal spray is highest.
Optionally, the organic acid is taurine.
By adopting the technical scheme, the organic acid is taurine, so that the smell of the formaldehyde-removing spray can be improved, people can not feel pungent in the environment sprayed with the formaldehyde-removing spray, and the effective acting time of the formaldehyde-removing spray can be prolonged when the taurine is adopted as the organic acid.
Optionally, the viscosity of the water-soluble adsorption matrix is 100-200mpa.s.
By adopting the technical scheme, when the viscosity of the water-soluble adsorption matrix is 100-200mPa.s, the formaldehyde removal spray can not only adsorb formaldehyde better, but also be favorable for obtaining the formaldehyde removal spray with good atomization effect, and further be favorable for improving the formaldehyde removal efficiency of the formaldehyde removal spray.
Optionally, the water-soluble adsorption matrix is carboxymethyl chitosan.
By adopting the technical scheme, when the water-soluble adsorption matrix adopts carboxymethyl chitosan, the carboxymethyl chitosan has the bactericidal effect, so that the effective period of the formaldehyde removal spray is prolonged.
Optionally, the degree of deacetylation of the carboxymethyl chitosan is greater than or equal to 90%.
By adopting the technical scheme, when the deacetylation degree of the carboxymethyl chitosan is more than or equal to 90%, the water solubility of the carboxymethyl chitosan is improved, and the components can be promoted to be uniformly mixed.
Optionally, the dispersing agent is any one or a combination of more than one of ethylene glycol, propylene glycol and hexylene glycol.
By adopting the technical scheme, the ethylene glycol, the propylene glycol and the hexanediol are all micromolecular alcohols, so that on one hand, the dispersion of each component of the formaldehyde removal spray can be promoted, meanwhile, a layer of shallow film can be formed on the surface of the formaldehyde removal spray, and the shallow film can not obstruct formaldehyde from entering the formaldehyde removal spray, so that formaldehyde can react with the effective components in the formaldehyde removal spray, and meanwhile, the volatilization and weathering of the effective components in the formaldehyde removal spray can be delayed, and the effective action time of the formaldehyde removal spray is prolonged.
Optionally, the bactericide is selected from any one or a combination of more than one of ethanol and quaternary ammonium salt bactericide.
By adopting the technical scheme, the ethanol, the quaternary ammonium salt bactericide and the like can kill bacteria, reduce the breeding of bacteria and are beneficial to prolonging the effective period of the formaldehyde removal spray. Wherein, the quaternary ammonium salt bactericide can be one or a combination of more than one of dodecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide.
Optionally, deionized water is used as the solvent.
The solvent has the main function of dissolving water-soluble adsorption matrix, ethylene urea, carbazide, organic acid and other components, and deionized water, pure water and the like can be selected for reducing the introduction of impurities.
In a second aspect, the preparation method of the efficient formaldehyde-removing spray provided by the application adopts the following technical scheme:
the preparation method of the high-efficiency formaldehyde-removing spray comprises the following steps:
s1, uniformly mixing a bactericide, a dispersing agent and a solvent to prepare a dispersing liquid;
s2, adding a water-soluble adsorption matrix and ethylene urea into the dispersion liquid, stirring at a stirring speed of 1000-2000r/min until the water-soluble adsorption matrix and ethylene urea are dissolved uniformly, regulating the stirring speed to 50-100r/min, adding carbazide, urea and organic acid, stirring until the water-soluble adsorption matrix and ethylene urea are completely transparent, filtering and packaging to obtain the formaldehyde-removing spray.
Through adopting above-mentioned technical scheme, the formaldehyde removal spray that obtains of preparation viscosity is even, the active ingredient remains quantity is big, can not block up the shower nozzle simultaneously, still has better atomization effect, is favorable to formaldehyde and formaldehyde removal spray abundant contact to improve the adsorption rate of formaldehyde removal spray to formaldehyde, make the active ingredient in the formaldehyde removal spray decompose formaldehyde fast.
In summary, the formaldehyde-removing spray of the application has at least the following beneficial effects:
1. the formaldehyde removing spray of the application adsorbs and grabs harmful substances in the air, such as formaldehyde, through the water-soluble adsorption matrix. Ethylene urea and urea contain active groups which can react with aldehyde groups, and have good elimination effect on aldehyde substances; the carbazide has strong reducibility and can rapidly neutralize aldehyde groups; the organic acid can catalyze the reaction of ethylene urea, urea and carbazide with aldehyde groups, so that aldehyde substances are rapidly eliminated, and the aldehyde removal efficiency of the aldehyde removal spray is improved.
2. The formaldehyde removal spray provided by the application has no requirements on illumination and the like, has low requirements on formaldehyde removal conditions, and can rapidly remove formaldehyde.
3. The formaldehyde removal spray agent can reduce the formaldehyde concentration of low-concentration formaldehyde to 0.1mg/m within 30min 3 The requirements of national standards on indoor living environments are met.
4. The method for preparing the formaldehyde-removing spray agent can prepare the formaldehyde-removing spray agent which is uniform, has large effective component retention, does not block a spray head and has good atomization effect, and is beneficial to improving the formaldehyde-removing efficiency of the formaldehyde-removing spray agent.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples.
Examples
Examples 1 to 5
The weight percentages of the components of the high efficiency formaldehyde removal spray of examples 1-5 are shown in Table 1 below:
table 1 weight percent of the components of the high Performance aldehyde removal sprays of examples 1-5
Wherein the degree of deacetylation of the carboxymethyl chitosan in examples 1-5 was 90% and the viscosity was 200mPa.s.
The preparation method of the high-efficiency formaldehyde-removing spray in the embodiments 1-5 comprises the following steps:
s1, adding deionized water into a stirring kettle, starting stirring, adding alcohol and glycol into the deionized water, and uniformly stirring to obtain a dispersion;
s2, adding water-soluble chitin and ethylene urea into the dispersion liquid, stirring at a stirring speed of 1000r/min for 20min, regulating the stirring speed to 100r/min, adding carbazide, urea and taurine, stirring until the mixture is completely transparent, and filtering and packaging to obtain the formaldehyde-removing spray.
Example 6
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, taurine was replaced with an equal amount of acetic acid.
Example 7
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, taurine is replaced by an equivalent amount of citric acid.
Example 8
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, the degree of deacetylation of carboxymethyl chitosan was 90% and the viscosity was 100mPa.s.
Example 9
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, the carboxymethyl chitosan was replaced with an equivalent amount of sodium carboxymethyl cellulose.
Example 10
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, the alcohol was replaced with an equal amount of dodecyltrimethylammonium chloride.
Example 11
An efficient formaldehyde removal spray differs from example 3 in that:
in this example, the ethylene glycol was replaced with an equal amount of propylene glycol.
Comparative example
Comparative example 1
An aldehyde removal spray differs from example 3 in that:
the weight percentage of carboxymethyl chitosan is 3.5 percent, and the weight percentage of deionized water is 87.76 percent.
Comparative example 2
An aldehyde removal spray differs from example 3 in that:
the ethylene urea and urea were replaced with equal amounts of carbazide.
Comparative example 3
An aldehyde removal spray differs from example 3 in that:
urea and carbazide were replaced with equal amounts of ethylene urea.
Comparative example 4
An aldehyde removal spray differs from example 3 in that:
the ethylene urea and the carbazide are replaced by equal amounts of urea.
Comparative example 5
An aldehyde removal spray differs from example 3 in that:
taurine is replaced by an equal amount of deionized water.
Performance test
Aldehyde removal efficiency test:
1. in a sealed climatic box with the thickness of 300 mm and 250mm, placing an acrylic plate which is sprayed with 3g of atomized formaldehyde-removing spray and is free of formaldehyde into the box, and then adsorbing formaldehyde solution by using a cotton swab to release formaldehyde in the box, wherein the initial concentration C of the formaldehyde in the box is as follows 0 About 10ppm. Continuously monitoring by using a formaldehyde detector, and recording concentration data C of formaldehyde after 1h 1 After 8 hoursConcentration data C of formaldehyde 8 And calculate the aldehyde removal rate y after using the aldehyde removal spray for 1h 1 With an aldehyde removal rate y after 8h 8 Recorded in table 2 below.
2. In a sealed climatic box with the thickness of 300 mm and 250mm, absorbing formaldehyde solution by using a cotton swab to release formaldehyde in the box, wherein the initial concentration of the formaldehyde is C 0 About 0.5mg/m 3 Then 0.5g of formaldehyde removal spray was sprayed into the tank. Continuously monitoring by using a formaldehyde detector, and recording concentration data C of formaldehyde after 15min 15 And formaldehyde concentration data C after 30min 30 Recorded in table 3 below.
Performance test data
TABLE 2 aldehyde removal efficiency of the aldehyde removal sprays of examples 1-11 and comparative examples 1-5 on high concentration formaldehyde
TABLE 3 aldehyde removal efficiency of the aldehyde removal sprays of examples 1-11 and comparative examples 1-5 on low concentration formaldehyde
| Sample of | C0(mg/m3) | C15(mg/m3) | C30(mg/m3) |
| Example 1 | 0.52 | 0.12 | 0.08 |
| Example 2 | 0.49 | 0.08 | 0.04 |
| Example 3 | 0.58 | 0.04 | 0.02 |
| Example 4 | 0.48 | 0.07 | 0.03 |
| Example 5 | 0.53 | 0.13 | 0.07 |
| Example 6 | 0.56 | 0.18 | 0.09 |
| Example 7 | 0.50 | 0.11 | 0.08 |
| Example 8 | 0.49 | 0.08 | 0.04 |
| Example 9 | 0.47 | 0.09 | 0.05 |
| Example 10 | 0.51 | 0.04 | 0.03 |
| Example 11 | 0.52 | 0.05 | 0.02 |
| Comparative example 1 | 0.54 | 0.20 | 0.13 |
| Comparative example 2 | 0.50 | 0.18 | 0.16 |
| Comparative example 3 | 0.49 | 0.22 | 0.19 |
| Comparative example 4 | 0.52 | 0.25 | 0.20 |
| Comparative example 5 | 0.48 | 0.45 | 0.42 |
As can be seen from the combination of examples 1 to 11 according to the present application and the data in tables 2 and 3, the formaldehyde-removing spray agent of the present application can not only rapidly remove formaldehyde with high concentration, but also rapidly reduce the formaldehyde content of formaldehyde with low concentration to 0.1mg/m 3 The requirements of national standards on indoor living environments can be met.
Comparative example 3 and comparative example 1 in combination with the data in tables 2 and 3, it is seen that when the amount of carboxymethyl chitosan exceeds 2%, the formaldehyde removal efficiency of the formaldehyde removal spray agent is reduced for both high concentration formaldehyde and low concentration formaldehyde. The reason is probably that too much carboxymethyl chitosan can influence the atomization effect of the formaldehyde removal spray, so that the dispersibility of the formaldehyde removal spray is poor, the formaldehyde absorption efficiency of the water-soluble absorption matrix is reduced, and the decomposition rate of carbazide, ethylene urea and urea on formaldehyde is reduced.
Comparative example 3 and comparative examples 2 to 4 in combination with the data in tables 2 and 3, it is understood that when a single carbazide or ethylene urea or urea is used instead of a combination of carbazide, ethylene urea and urea, the formaldehyde removal efficiency of the formaldehyde removal spray for high concentration formaldehyde and low concentration formaldehyde is reduced, and at the same time, the formaldehyde removal spray cannot be used for removing formaldehyde in a concentration range of 0.5mg/m within 30min 3 The formaldehyde with low concentration is reduced to 0.1mg/m 3 The following is given.
Comparative example 3 and comparative example 5 in combination with the data in tables 2 and 3, it can be seen that when taurine is replaced with an equal amount of deionized water, the formaldehyde removal efficiency of the formaldehyde removal spray for high concentrations of formaldehyde is greatly reduced, while the formaldehyde removal spray is substantially ineffective for low concentrations of formaldehyde.
As can be seen from the comparison of examples 3 and 6 and 7 in combination with the data in table 2, when taurine is used as the organic acid, the formaldehyde removal rate after 1h of the formaldehyde removal spray is 90.8%, and the formaldehyde removal rate after 8h is 99.5%; when the organic acid adopts acetic acid, the formaldehyde removal rate after 1h of the formaldehyde removal spray is 89.5%, the formaldehyde removal rate after 8h is 91.2%, and when the organic acid adopts citric acid, the formaldehyde removal rate after 1h of the formaldehyde removal spray is 89.5%The formaldehyde removal rate after 8 hours is 91.9%, and the effective action time of the formaldehyde removal spray is more beneficial to prolonging when taurine is adopted as the organic acid. In addition, when taurine is used as the organic acid in combination with the data in Table 3, the formaldehyde removal spray can reduce the formaldehyde concentration to 0.1mg/m within 15min when treating low formaldehyde concentration 3 The following is given. That is, when taurine is adopted as the organic acid in the formaldehyde removal spray, the formaldehyde removal efficiency of the formaldehyde removal spray on low-concentration formaldehyde is more improved.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (5)
1. The preparation method of the high-efficiency formaldehyde-removing spray is characterized by comprising the following steps of:
s1, uniformly mixing bactericide, 0.15-0.25wt% of dispersing agent and a solvent to prepare a dispersing liquid;
s2, adding a water-soluble adsorption matrix and ethylene urea into the dispersion liquid, stirring at a stirring speed of 1000-2000r/min until the water-soluble adsorption matrix and ethylene urea are dissolved uniformly, adjusting the stirring speed to 50-100r/min, adding carbazide, urea and organic acid, stirring until the water-soluble adsorption matrix and ethylene urea are completely transparent, filtering and packaging to obtain an aldehyde removal spray;
the water-soluble adsorption matrix comprises, by weight, 1-1.5% of a water-soluble adsorption matrix, 0.3-0.4% of ethylene urea, 0.5-0.8% of urea, 1.2-1.3% of carbazide, 2.5-3.2% of an organic acid, 3-4% of a bactericide, 0.15-0.25% of a dispersing agent and the balance of a solvent;
the organic acid is taurine, the bactericide is any one or a combination of a plurality of ethanol and quaternary ammonium salt bactericides, and the dispersing agent is any one or a combination of a plurality of ethylene glycol, propylene glycol and hexylene glycol.
2. The method for preparing the efficient formaldehyde-removing spray according to claim 1, which is characterized in that: the material is prepared from the following raw materials in percentage by weight:
water-soluble adsorption matrix: 1.26%
Ethylene urea: 0.345%
Urea: 0.6%
Carbazide: 1.26%
Organic acid: 2.835%
A bactericide: 3.5%
Dispersing agent: 0.2%
Solvent: 90%.
3. The method for preparing the high-efficiency formaldehyde-removing spray agent according to any one of claims 1 to 2, which is characterized in that: the viscosity of the water-soluble adsorption matrix is 100-200mPa.s.
4. The method for preparing the efficient formaldehyde-removing spray according to claim 3, which is characterized in that: the water-soluble adsorption matrix is carboxymethyl chitosan.
5. The method for preparing the efficient formaldehyde-removing spray agent according to claim 4, which is characterized in that: the deacetylation degree of the carboxymethyl chitosan is more than or equal to 90%.
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