CN111620978A - Preparation method of highway dust suppression film-forming agent and water-redissolving highway dust suppression film-forming agent - Google Patents
Preparation method of highway dust suppression film-forming agent and water-redissolving highway dust suppression film-forming agent Download PDFInfo
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- CN111620978A CN111620978A CN202010245246.0A CN202010245246A CN111620978A CN 111620978 A CN111620978 A CN 111620978A CN 202010245246 A CN202010245246 A CN 202010245246A CN 111620978 A CN111620978 A CN 111620978A
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- 239000000428 dust Substances 0.000 title claims abstract description 66
- 230000001629 suppression Effects 0.000 title claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000178 monomer Substances 0.000 claims abstract description 31
- 239000003999 initiator Substances 0.000 claims abstract description 20
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 11
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 claims abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 7
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims abstract description 7
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims abstract description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 7
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 239000008367 deionised water Substances 0.000 claims description 22
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 6
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 6
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical group CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 150000007514 bases Chemical class 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 150000002978 peroxides Chemical class 0.000 abstract description 2
- 229920006254 polymer film Polymers 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000002835 absorbance Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002120 nanofilm Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- -1 acrylic ester Chemical class 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PUSKHXMZPOMNTQ-UHFFFAOYSA-N ethyl 2,1,3-benzoselenadiazole-5-carboxylate Chemical group CCOC(=O)C1=CC=C2N=[Se]=NC2=C1 PUSKHXMZPOMNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F218/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
- C08F218/02—Esters of monocarboxylic acids
- C08F218/04—Vinyl esters
- C08F218/08—Vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a preparation method of a road dust suppression film-forming agent, which adopts a water-based polymerization method, takes vinyl acetate, methyl acrylate, ethyl acrylate, acrylic acid and the like as main monomers, and takes hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride and the like as auxiliary monomers; the water-soluble peroxide is used as an initiator to synthesize the re-soluble highway dust suppression water-based polymer film forming agent, the product has excellent adhesive property on highway dust, the highway dust can be effectively suppressed under low use concentration, particles formed by the highway dust are easy to remove by highway cleaning machinery, and can be dissolved again by rainwater or sprinkled water after forming a film with the dust on a highway so as to ensure the cleanness of the highway.
Description
Technical Field
The invention relates to the field of environmental protection materials, in particular to a preparation method of a highway dust suppression film forming agent and a water-redissolving highway dust suppression film forming agent.
Background
For dust depressants, various countries have carried out a great deal of research, and various dust depressants applied to different scenes, such as transportation dust depressants, building dust depressants, train dust depressants, coal covering agents, coal crusting agents, coal flow dust depressants and the like are formed. But the materials required for road dust suppression are different from those used for dust suppression in mines and construction sites. The main reason for this is the need to maintain the cleanliness and flushability of the road surface. Although the dust suppressant prepared from the high molecular polymer has excellent functions of catching, wetting, bonding and coagulating dust on a road surface, a non-water-soluble bonding layer is easily formed on the road surface, and the visual cleanness and the washability of the road surface are influenced.
Disclosure of Invention
Aiming at the problems, the invention provides a preparation method of a water-redissolved highway dust suppression high-molecular film forming agent, and the synthesis system of the method is completely water-based, has no organic solvent, and has the advantages of safe production process, no pollution and no three-waste discharge; meanwhile, the invention also provides the water-redissolved highway dust suppression polymer film-forming agent prepared by the method, and the highway dust suppression polymer film-forming agent has the advantages of biodegradability, no influence on the growth of trees at two sides of a highway, no harm to pedestrians and the environment of the highway and no pollution.
The technical scheme adopted by the invention is as follows:
a preparation method of a road dust suppression film-forming agent comprises the following steps:
s1, adding deionized water, acrylic monomers and alkaline compounds into the reactor at room temperature, stirring for 10-60 min, and controlling the pH of the reaction system to be 3-8;
s2, slowly adding an acrylate monomer into the reactor, stirring for 20-60 min, and raising the reaction temperature to 55-85 ℃;
s3, dropwise adding an initiator aqueous solution into the reactor within 1-4 h, heating to 88-95 ℃ after dropwise adding, preserving heat for 1-2 h, and cooling to room temperature to obtain the water-redissolving highway dust suppression water-based polymer film-forming agent.
The working principle of the technical scheme is as follows:
the invention adopts a water-based polymerization method, takes an acrylic monomer as a main monomer and takes an acrylic ester monomer as an auxiliary monomer; the water-soluble peroxide is used as an initiator to synthesize the re-soluble highway dust suppression water-based polymer film forming agent, the product has excellent adhesive property on highway dust, the highway dust can be effectively suppressed under a lower use concentration, particles formed by the highway dust are easy to remove by a highway cleaning machine, and can be dissolved again by rainwater or sprinkled water after forming a film with the dust on a highway so as to ensure the cleanness of the highway.
The synthesis system of the invention is completely aqueous, has no organic solvent, safe production process, no pollution and no three-waste discharge; the prepared product has biodegradability, has no influence on the growth of trees on two sides of a highway, has no harm and no pollution to pedestrians and the environment of the highway, and solves the technical problem that the dust suppressant easily forms a non-water-soluble bonding layer on the pavement of the highway to influence the visual cleanness and the washability of the pavement.
In a further technical scheme, in the above steps, the addition ratio of the acrylic monomer, the alkaline compound, the acrylate monomer and the initiator is as follows: 10-25 parts of acrylic monomer, 3-10 parts of alkaline compound, 15-50 parts of acrylate monomer and 0.3-1 part of initiator.
In a further technical scheme, the acrylic monomer is one or more of acrylic acid, methacrylic acid and maleic anhydride, and 10-25 parts of the acrylic monomer is dissolved by 35-65 parts of deionized water.
The acrylic monomers used in the synthesis are acrylic acid, methacrylic acid, maleic anhydride and the like, and the acrylic monomers endow the synthesized product with good water solubility, moisture retention on road dust and complexing action on heavy metal ions in the dust, so that the technical problem that the dust suppressant easily forms a non-water-soluble adhesive layer on the road surface to influence the visual cleanness and washability of the road surface is solved.
In a further technical scheme, the alkaline compound is one or more of sodium hydroxide, potassium hydroxide and sodium carbonate, and 3-10 parts of the alkaline compound is dissolved by 30-70 parts of deionized water.
In a further technical scheme, the acrylate monomer is one or more of vinyl acetate, methyl acrylate, ethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride.
When the acrylate monomer is a mixed monomer of vinyl acetate, methyl acrylate, ethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride, the dosage of each component is respectively as follows: 10-30 parts of vinyl acetate, 2-10 parts of ethyl acrylate, and 3-10 parts of methyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride.
The acrylate monomers used in the synthesis are vinyl acetate, methyl acrylate, ethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride, homopolymers of a plurality of monomers have good water solubility, proper composition regulation and control and a unique technical route can ensure that the synthesized product has good re-water solubility after forming a film, and the solution formed by the used vinyl acetate has excellent adhesive property to dust.
In addition, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride in the acrylate monomers used in the synthesis are cationic monomers, a high-molecular aqueous solution with cationic characteristics or amphoteric characteristics can be prepared under certain conditions, and as the highway dust contains more anions, cationic groups on the molecular chain of the synthesized product can effectively enhance the capture effect on the highway dust, and the technical problem of unsatisfactory dust suppression effect of the dust suppressant is solved.
In a further technical scheme, the initiator is diisopropyl peroxydicarbonate, ammonium persulfate, potassium persulfate, sodium metabisulfite and H2O2When the initiators are two types and contain sodium metabisulfite, the amount of the sodium metabisulfite is 0.5 times that of the other initiator.
In a further technical scheme, the initiator aqueous solution in the step S3 is prepared by dissolving the initiator in deionized water, and the ratio of the initiator to the deionized water is 0.3-1: 15-30.
The invention also provides the water-redissolving highway dust suppression film-forming agent prepared by the preparation method.
The invention has the beneficial effects that: the synthesis system of the method is completely aqueous, has no organic solvent, and has the advantages of safe production process, no pollution and no three-waste discharge; the highway dust suppression high-molecular film forming agent has the advantages of biodegradability, no influence on the growth of trees on two sides of a highway, no harm to pedestrians and the environment of the highway and no pollution.
Drawings
FIG. 1 is a graph showing the adsorption of dust to the samples of example 2.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Example 1:
adding 60 parts of deionized water and 13 parts of acrylic acid into a reaction kettle, and quickly stirring for 10 min; dissolving 8 parts of sodium hydroxide by using 50 parts of deionized water, adding a sodium hydroxide aqueous solution into the reaction kettle, and stirring for 30 min; mixing 11 parts of vinyl acetate, 2 parts of ethyl acrylate and 8 parts of methyl acrylate, slowly adding into a reaction kettle, and stirring for 10 min; raising the reaction temperature to 72 ℃; dissolving 0.7 part of ammonium persulfate by 26 parts of deionized water, adding the solution into a reaction kettle for 65min, gradually heating to 85 ℃, and reacting for 1 h; continuously heating to 95 ℃, and reacting for 1 h; cooling to room temperature and discharging.
Example 2:
adding 45 parts of deionized water, 7 parts of acrylic acid and 15 parts of maleic anhydride into a reaction kettle, and quickly stirring for 20 min; dissolving 10 parts of sodium hydroxide by using 60 parts of deionized water, adding a sodium hydroxide aqueous solution into the reaction kettle, and stirring for 40 min; mixing 10 parts of vinyl acetate, 2 parts of methyl acrylate, 5 parts of ethyl acrylate and 3 parts of hydroxypropyl acrylate, slowly adding into a reaction kettle, and stirring for 30 min; raising the reaction temperature to 75 ℃; dissolving 0.8 part of potassium persulfate by 30 parts of deionized water, adding the solution into a reaction kettle for 1.5 hours, gradually heating to 88 ℃, and reacting for 2 hours; continuously heating to 93 ℃, and reacting for 1 h; cooling to room temperature and discharging.
Example 3:
adding 55 parts of deionized water and 17 parts of maleic anhydride into a reaction kettle, and quickly stirring for 15 min; dissolving 7 parts of sodium hydroxide by 25 parts of deionized water, adding a sodium hydroxide aqueous solution into the reaction kettle, and stirring for 30 min; mixing 25 parts of vinyl acetate, 3 parts of ethyl acrylate and 7 parts of hydroxyethyl acrylate, slowly adding into a reaction kettle, and stirring for 20 min; raising the reaction temperature to 72 ℃; 0.7 part of potassium persulfate dissolved in 20 parts of deionized water and 0.2 part of H diluted in 10 parts of deionized water2O2Adding the mixture into a reaction kettle for reaction for 1 hour within 80 min; continuously heating to 85 ℃, and reacting for 1 h; continuously heating to 95 ℃, and reacting for 1 h; cooling to room temperature and discharging.
Example 4:
adding 55 parts of deionized water, 10 parts of acrylic acid and 5 parts of methacrylic acid into a reaction kettle, and quickly stirring for 15 min; dissolving 3 parts of sodium hydroxide by using 30 parts of deionized water, adding a sodium hydroxide aqueous solution into the reaction kettle, and stirring for 30 min; mixing 15 parts of vinyl acetate and 2 parts of methyl acrylate, slowly adding into a reaction kettle, and stirring for 10 min; dissolving 2 parts of acrylamide in 10 parts of deionized water, mixing with 3 parts of methacryloyloxyethyl trimethyl ammonium chloride, slowly adding into a reaction kettle, and stirring for 20 min; the reaction temperature was raised to 68 ℃; diluting 1.0 part of diisopropyl peroxydicarbonate with 25 parts of deionized water, adding the diluted solution into a reaction kettle for 90min, gradually heating to 75 ℃, and reacting for 1 h; continuously heating to 80 ℃, and reacting for 1 h; continuously heating to 88 ℃ and reacting for 1 h; cooling to room temperature and discharging.
Dust suppression and water re-solubility measurements of dust suppression film formers were performed on the products synthesized in examples 1-4 above.
1. The dust suppression performance (dust adsorption capacity) is measured on a 720 spectrophotometer by adopting a spectrometry method, and the specific steps are as follows:
a1, drawing a working curve: respectively taking soil samples with particle sizes of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 and 0.7 below 200 meshes (multiple tests show that the dust amount exceeds 0.8g and the linear relation of the working curve is deteriorated), adding 15ml of 0.1% of example samples into the soil samples, uniformly mixing, standing for 5min, measuring the absorbance of the sample at 490nm on a 720 spectrophotometer, drawing the working curve by using the mass of the soil sample to the absorbance, and drawing the R of the working curve2The value should be greater than 0.95.
The following is the adsorption curve for dust, R of the curve, for the sample of example 22The value is 0.9799.
B1, weighing a certain amount of soil sample below 200 meshes, adding 15ml of 0.1% of example sample 2, uniformly mixing, standing for 5min, measuring the absorbance at 490nm to be 0.495, finding out the dust content corresponding to the absorbance to be about 0.32g according to the working curve, and actually weighing to be 0.33g, which indicates that nearly 97% of dust is adsorbed therein. The dust adsorption capacity of the samples of the other examples was measured by the same method, and the results are shown in the following table.
2. The determination of the redissolution in water is carried out by combining the synthetic products in the examples with dust and then adopting a direct observation method, and the specific steps are as follows:
a2, taking 1g of soil sample with the particle size of less than 200 meshes, respectively adding 15g of the synthesized product in each example, uniformly mixing, pouring into a 9cm watch glass, and drying at 60 ℃ to form a film;
b2, adding 30ml of water into the watch glass, observing the cracking, shrinking and dissolving processes of the film in the water, and recording the time required for the film to be completely dissolved.
The test results are as follows:
| sample (I) | Adsorption capacity to dust | Redissolution in water after film formation (time) |
| Example 1 | 93.3％ | 33min |
| Example 2 | 97.2％ | 29min |
| Example 3 | 95.3％ | 35min |
| Example 4 | 92.9％ | 42min |
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. A preparation method of a road dust suppression film forming agent is characterized by comprising the following steps:
s1, adding deionized water, acrylic monomers and alkaline compounds into the reactor at room temperature, stirring for 10-60 min, and controlling the pH of the reaction system to be 3-8;
s2, adding an acrylate monomer into the reactor, stirring for 20-60 min, and raising the reaction temperature to 55-85 ℃;
s3, dropwise adding an initiator aqueous solution into the reactor within 1-4 h, heating to 88-95 ℃ after dropwise adding, preserving heat for 1-2 h, and cooling to room temperature to obtain the water-redissolving highway dust suppression film-forming agent.
2. The preparation method of the road dust suppression film-forming agent according to claim 1, wherein in the step, the addition ratio of the acrylic monomer, the alkaline compound, the acrylate monomer and the initiator is as follows: 10-25 parts of acrylic monomer, 3-10 parts of alkaline compound, 15-50 parts of acrylate monomer and 0.3-1 part of initiator.
3. The method for preparing a road dust suppression film forming agent according to claim 2, wherein the acrylic monomer is one or more of acrylic acid, methacrylic acid and maleic anhydride.
4. The method of preparing a road dust suppression film former as claimed in claim 2 wherein the basic compound is one or more of sodium hydroxide, potassium hydroxide and sodium carbonate.
5. The method for preparing the road dust suppression film-forming agent according to claim 2, wherein the acrylate monomer is one or more of vinyl acetate, methyl acrylate, ethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride.
6. The method for preparing the road dust suppression film-forming agent according to claim 2, wherein the initiator is diisopropyl peroxydicarbonate, ammonium persulfate, potassium persulfate, sodium metabisulfite, H2O2When the initiators are two types and contain sodium metabisulfite, the amount of the sodium metabisulfite is 0.5 times that of the other initiator.
7. The method for preparing the road dust suppression film-forming agent according to claim 6, wherein the aqueous solution of the initiator in step S3 is prepared by dissolving the initiator in deionized water, and the ratio of the initiator to the deionized water is 0.3-1: 15-30.
8. A water-re-soluble road dust suppression film-forming agent, characterized in that the road dust suppression film-forming agent is prepared by the preparation method of the road dust suppression film-forming agent of any one of claims 1-7.
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| CN202010245246.0A CN111620978A (en) | 2020-03-31 | 2020-03-31 | Preparation method of highway dust suppression film-forming agent and water-redissolving highway dust suppression film-forming agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940680A (en) * | 2021-03-27 | 2021-06-11 | 兰州天际环境保护有限公司 | Pavement dust suppressant |
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| CN104693339A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Water-based dust depressor and preparation method thereof |
| CN106008791A (en) * | 2016-06-22 | 2016-10-12 | 加翎加（天津）环境科技有限公司 | Mineral powder suppressant and preparing method thereof |
| US20190300634A1 (en) * | 2016-05-20 | 2019-10-03 | 3M Innovative Properties Company | Dust suppression compositions and methods |
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2020
- 2020-03-31 CN CN202010245246.0A patent/CN111620978A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104693339A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Water-based dust depressor and preparation method thereof |
| US20190300634A1 (en) * | 2016-05-20 | 2019-10-03 | 3M Innovative Properties Company | Dust suppression compositions and methods |
| CN106008791A (en) * | 2016-06-22 | 2016-10-12 | 加翎加（天津）环境科技有限公司 | Mineral powder suppressant and preparing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940680A (en) * | 2021-03-27 | 2021-06-11 | 兰州天际环境保护有限公司 | Pavement dust suppressant |
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