CN114988764B - Water emulsion type modified asphalt and application thereof - Google Patents
Water emulsion type modified asphalt and application thereof Download PDFInfo
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- CN114988764B CN114988764B CN202210761540.6A CN202210761540A CN114988764B CN 114988764 B CN114988764 B CN 114988764B CN 202210761540 A CN202210761540 A CN 202210761540A CN 114988764 B CN114988764 B CN 114988764B
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- asphalt
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- 239000010426 asphalt Substances 0.000 title claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000000839 emulsion Substances 0.000 title claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000003973 paint Substances 0.000 claims description 38
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 36
- 239000004816 latex Substances 0.000 claims description 30
- 229920000126 latex Polymers 0.000 claims description 30
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 24
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 22
- 239000004408 titanium dioxide Substances 0.000 claims description 18
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 17
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 7
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 5
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 5
- 239000012615 aggregate Substances 0.000 claims description 5
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- -1 polyoxyethylene nonylphenol Polymers 0.000 claims description 5
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 5
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims 1
- 239000000654 additive Substances 0.000 abstract description 5
- 230000000996 additive effect Effects 0.000 abstract description 5
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- 150000003254 radicals Chemical class 0.000 abstract description 3
- 230000001804 emulsifying effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000000977 initiatory effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000004321 preservation Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000010692 aromatic oil Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000001038 titanium pigment Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
-
- 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
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- 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
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/24—Homopolymers or copolymers of amides or imides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/24—Binder incorporated as an emulsion or solution
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- Polymers & Plastics (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of asphalt, in particular to water emulsion type modified asphalt and application thereof, and the water emulsion type modified asphalt comprises the following components in parts by weight: 20-30 parts of emulsified asphalt, 80-100 parts of aggregate and 20-30 parts of water, wherein the emulsified asphalt is prepared by the following steps: heating 100 parts by weight of matrix asphalt, adding 3-9 parts by weight of stabilizing additive, preserving heat and stirring for 20-30min, adding 6-12 parts by weight of first emulsifier and 20-30 parts by weight of water, stirring and mixing, adding water-based polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt. The invention prepares the water-based polyacrylate emulsion by utilizing free radical initiation polymerization, and the emulsified asphalt is obtained after the water-based polyacrylate emulsion is mixed with asphalt, the emulsifying system is simple and effective, and the prepared modified asphalt has the property of cold mixing and cold paving, has the advantages of small environmental pollution, low construction difficulty and the like, and meets the basic road use requirement.
Description
Technical Field
The invention relates to the technical field of asphalt, in particular to water emulsion type modified asphalt and application thereof.
Background
Asphalt is a brown or black brown organic cementing material, is a non-high polymer material blend which has relatively small molecular weight and consists of a plurality of small molecular substances, has the outstanding characteristics of cheap and abundant raw materials, convenient construction and the like, and is widely applied to the fields of buildings, highways, bridges and the like. The asphalt is used in three forms, namely hot asphalt, diluted asphalt and emulsified asphalt.
The emulsified asphalt is asphalt, emulsifier and assistant under certain technological condition to produce oil-in-water or water-in-oil liquid asphalt. The conventional preparation method is that road asphalt is diffused into water by a mechanical stirring and chemical stabilization method to be liquefied into emulsified asphalt with low viscosity and good fluidity at normal temperature.
The performance of the emulsified asphalt determines the road performance of the cold-mix cold-paving asphalt mixture to a great extent, and the research on the cold-mix cold-paving asphalt and the emulsified asphalt is still insufficient at present, and is insufficient for guiding the production work of high-quality and high-performance pavement.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide water emulsion type modified asphalt and application thereof.
The aim of the invention is achieved by the following technical scheme:
the water emulsion type modified asphalt comprises the following components in parts by weight: 20-30 parts of emulsified asphalt, 80-100 parts of aggregate and 20-30 parts of water, wherein the emulsified asphalt is prepared by the following steps: heating 100 parts by weight of matrix asphalt to 150-160 ℃, adding 3-9 parts by weight of stabilizing additive, preserving heat and stirring for 20-30min, adding 6-12 parts by weight of first emulsifier and 20-30 parts by weight of water, stirring and mixing, adding water-based polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt.
Wherein the aqueous polyacrylate emulsion is prepared by the following method: adding 2-6 parts by weight of acrylic acid, 14-20 parts by weight of butyl acrylate, 10-12 parts by weight of methyl methacrylate, 5-9 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 1-3 parts by weight of a second emulsifier and 0.1-0.2 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65-75 ℃, reacting for 45-75min at a temperature, adding 0.05-0.15 part by weight of ammonium persulfate, and continuously reacting for 45-75min at a temperature to obtain the water-based polyacrylate emulsion.
Wherein the passing rate of the aggregate through a 2.36mm sieve is 50-60%, the passing rate of the aggregate through a 1.18mm sieve is 10-14%, and the passing rate of the aggregate through a 0.6mm sieve is 8-10%.
Wherein the first emulsifier consists of cetyl trimethyl ammonium chloride, polyoxyethylene nonylphenol ether and water according to the weight ratio of 1-2:1-3:100.
Wherein the second emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfonate.
Wherein the aggregate is limestone aggregate.
Wherein the stabilizing auxiliary agent is aromatic oil.
The preparation method comprises the following steps: mixing the emulsified asphalt, the aggregate and the water according to the weight ratio to obtain the water emulsion type modified asphalt.
The application of the water emulsion type modified asphalt is applied to the road paving process.
The road paving process comprises the following steps:
(1) Mixing: adding emulsified asphalt, aggregate and water in a mixing machine according to the weight ratio, and mixing;
(2) Transportation: arranging a loading dump truck to transport the mixed modified asphalt to a construction position;
(3) Paving: the paver uniformly paves the modified asphalt on the pavement;
(4) Compacting: sequentially performing initial pressing, re-pressing and final pressing on the paved asphalt pavement;
(5) Scribing: the scribing machine coats scribing paint on the asphalt pavement.
Because the invention adopts the modified asphalt in water emulsion and adopts the cold mixing and paving process, the compacted asphalt still contains more water, certain difficulty is caused to the coating of the marking paint, and the coating work of the marking paint is generally started after natural health maintenance is carried out on the road surface to reduce the water, but the project period is lengthened, and the weather can not be ensured to be continuously rainless, so the invention correspondingly develops the marking paint with quick drying property and water resistance which is matched.
The scribing paint is prepared by the following steps:
adding 40-50 parts by weight of titanium dioxide, 16.3-21.5 parts by weight of butyl acrylate, 22.3-26.5 parts by weight of methyl acrylate, 2-3 parts by weight of acrylic acid, 3-4 parts by weight of emulsifying agent and 0.3-0.4 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65-75 ℃ and preserving heat for reacting for 60-90min, then gradually dropwise adding a mixed solution consisting of 9.4-11.4 parts by weight of butyl acrylate, 6.4-8.4 parts by weight of methyl acrylate, 5.3-9.5 parts by weight of diacetone acrylamide and 0.1-0.2 part by weight of ammonium persulfate, and keeping the temperature for reacting during the dropwise adding process, wherein the dropwise adding time is controlled to be 90-120min, so as to obtain a first latex;
B. adding 60-70 parts by weight of titanium dioxide, 70-80 parts by weight of talcum powder and 10-19 parts by weight of adipic dihydrazide into 100 parts by weight of deionized water, and dispersing at a high speed of 600-800r/min to obtain second latex;
C. and (3) dispersing the first latex and the second latex at a high speed according to the weight ratio of 1-2:1, setting the rotating speed to 600-800r/min for 20-40min, then adding an auxiliary agent, continuously dispersing at a high speed for 2-8min, and recording to obtain the marking paint.
Although the adoption of an organic solvent to improve the evaporation rate is a means of quick drying, the invention uses the marking paint of an aqueous system as a better choice, on one hand, the invention does not need to wait for the curing and air drying of the asphalt pavement to carry out the marking paint coating, namely when the pavement with higher water content is constructed, the organic system is easier to mutually infiltrate and dissolve with water instead, and the coating effect is affected; on the other hand, the invention adopts the water emulsion asphalt to reduce VOC emission, so the invention adopts the water-based paint for marking out to complement each other.
In order to give the aqueous systems the paint also quick-drying properties, it is necessary to raise the solids content of the paint as much as possible, which also corresponds to an increase in the filler content, which also contributes to an increase in the abrasion resistance of the paint. However, as the content of the filler increases, the content of the resin as the binder relatively decreases, which tends to cause uneven distribution of the filler and the binder, resulting in deterioration of adhesion of a part of the filler, which is equivalent to a decrease in wear resistance.
Therefore, unlike the common mode of directly mixing the connecting resin and the filler, the invention adopts free radical to initiate polymerization reaction to carry out coating modification on the titanium pigment and form polyacrylate emulsion, namely, the part of titanium pigment is already in polyacrylate serving as the connecting resin, thus ensuring the uniform distribution of the part of titanium pigment in the connecting resin; the invention adopts adipic dihydrazide to carry out physical mixing modification on talcum powder and another part of titanium dioxide to form second latex, and diacetone acrylamide is introduced into polyacrylic acid monomer of the first latex, so that the adipic dihydrazide of the second latex can promote the colloidal particles of the second latex to carry out crosslinking reaction, that is, talcum powder and another part of titanium dioxide can be uniformly dispersed among the colloidal particles of the first latex through the pre-dispersion of the second latex, and simultaneously, the formation of a crosslinking network is promoted, the compactness among the colloidal particles is improved, thereby improving the stability of a dispersed phase, improving the cohesive energy among the colloidal particles, and being beneficial to the improvement of adhesive force after coating and the reduction of shrinkage. The scribing paint prepared by the invention has the advantages of water-based environment protection, high solid content, wear resistance and water resistance.
The grain size of the titanium dioxide of the marking paint is preferably 0.3-0.5 mu m, and the grain size of the talcum powder is 2-10 mu m.
The invention has the beneficial effects that: the invention prepares the water-based polyacrylate emulsion by utilizing free radical initiation polymerization, and the emulsified asphalt is obtained after the water-based polyacrylate emulsion is mixed with asphalt, the emulsifying system is simple and effective, and the prepared modified asphalt has the property of cold mixing and cold paving, has the advantages of small environmental pollution, low construction difficulty and the like, and meets the basic road use requirement.
Detailed Description
The invention will be further illustrated by the following examples, which are not intended to limit the scope of the invention, in order to facilitate the understanding of those skilled in the art.
Example 1
The water emulsion type modified asphalt comprises the following components in parts by weight: 25 parts of emulsified asphalt, 90 parts of aggregate and 25 parts of water, wherein the emulsified asphalt is prepared by the following method: heating 100 parts by weight of matrix asphalt to 155 ℃, adding 6 parts by weight of stabilizing additive, keeping the temperature and stirring for 25min, adding 9 parts by weight of first emulsifier and 25 parts by weight of water, stirring and mixing, adding the aqueous polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt.
Wherein the aqueous polyacrylate emulsion is prepared by the following method: adding 4 parts by weight of acrylic acid, 17 parts by weight of butyl acrylate, 11 parts by weight of methyl methacrylate, 7 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 2 parts by weight of a second emulsifier and 0.15 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 70 ℃ and carrying out heat preservation reaction for 60min, adding 0.1 part by weight of ammonium persulfate, and continuing heat preservation reaction for 60min to obtain the water-based polyacrylate emulsion.
Wherein the aggregate passes through a 2.36mm sieve at a rate of 55%, passes through a 1.18mm sieve at a rate of 12%, and passes through a 0.6mm sieve at a rate of 9%.
The first emulsifier consists of cetyl trimethyl ammonium chloride, polyoxyethylene nonylphenol ether and water according to the weight ratio of 1.5:2:100.
Wherein the second emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfonate.
Wherein the aggregate is limestone aggregate.
Wherein the stabilizing auxiliary agent is aromatic oil.
The preparation method comprises the following steps: mixing the emulsified asphalt, the aggregate and the water according to the weight ratio to obtain the water emulsion type modified asphalt.
The application of the water emulsion type modified asphalt is applied to the road paving process.
The road paving process comprises the following steps:
(1) Mixing: adding emulsified asphalt, aggregate and water in a mixing machine according to the weight ratio, and mixing;
(2) Transportation: arranging a loading dump truck to transport the mixed modified asphalt to a construction position;
(3) Paving: the paver uniformly paves the modified asphalt on the pavement;
(4) Compacting: sequentially performing initial pressing, re-pressing and final pressing on the paved asphalt pavement;
(5) Scribing: the scribing machine coats scribing paint on the asphalt pavement.
Example 2
The water emulsion type modified asphalt comprises the following components in parts by weight: 20 parts of emulsified asphalt, 80 parts of aggregate and 20 parts of water, wherein the emulsified asphalt is prepared by the following steps: heating 100 parts by weight of matrix asphalt to 150 ℃, adding 3 parts by weight of stabilizing additive, keeping the temperature and stirring for 20min, adding 6 parts by weight of first emulsifier and 20 parts by weight of water, stirring and mixing, adding the aqueous polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt.
Wherein the aqueous polyacrylate emulsion is prepared by the following method: adding 2 parts by weight of acrylic acid, 14 parts by weight of butyl acrylate, 10 parts by weight of methyl methacrylate, 5 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 1 part by weight of a second emulsifier and 0.1 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65 ℃ and carrying out heat preservation reaction for 45min, adding 0.05 part by weight of ammonium persulfate, and continuing the heat preservation reaction for 45min to obtain the water-based polyacrylate emulsion.
Wherein the aggregate passes through a 2.36mm sieve at a rate of 50%, passes through a 1.18mm sieve at a rate of 10%, and passes through a 0.6mm sieve at a rate of 8%.
The first emulsifier consists of cetyl trimethyl ammonium chloride, polyoxyethylene nonylphenol ether and water according to the weight ratio of 1:1:100.
Wherein the second emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfonate.
Wherein the aggregate is limestone aggregate.
Wherein the stabilizing auxiliary agent is aromatic oil.
The preparation method comprises the following steps: mixing the emulsified asphalt, the aggregate and the water according to the weight ratio to obtain the water emulsion type modified asphalt.
The application of the water emulsion type modified asphalt is applied to the road paving process.
The road paving process comprises the following steps:
(1) Mixing: adding emulsified asphalt, aggregate and water in a mixing machine according to the weight ratio, and mixing;
(2) Transportation: arranging a loading dump truck to transport the mixed modified asphalt to a construction position;
(3) Paving: the paver uniformly paves the modified asphalt on the pavement;
(4) Compacting: sequentially performing initial pressing, re-pressing and final pressing on the paved asphalt pavement;
(5) Scribing: the scribing machine coats scribing paint on the asphalt pavement.
Example 3
The water emulsion type modified asphalt comprises the following components in parts by weight: 30 parts of emulsified asphalt, 100 parts of aggregate and 30 parts of water, wherein the emulsified asphalt is prepared by the following steps: heating 100 parts by weight of matrix asphalt to 160 ℃, adding 9 parts by weight of stabilizing additive, keeping the temperature and stirring for 30min, adding 12 parts by weight of first emulsifier and 30 parts by weight of water, stirring and mixing, adding the aqueous polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt.
Wherein the aqueous polyacrylate emulsion is prepared by the following method: adding 6 parts by weight of acrylic acid, 20 parts by weight of butyl acrylate, 12 parts by weight of methyl methacrylate, 9 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 3 parts by weight of a second emulsifier and 0.2 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 75 ℃, carrying out heat preservation reaction for 75 minutes, adding 0.15 part by weight of ammonium persulfate, and carrying out heat preservation reaction for 75 minutes to obtain the water-based polyacrylate emulsion.
Wherein the aggregate passes through a 2.36mm sieve at 60%, passes through a 1.18mm sieve at 14%, and passes through a 0.6mm sieve at 10%.
The first emulsifier consists of cetyl trimethyl ammonium chloride, polyoxyethylene nonylphenol ether and water according to the weight ratio of 2:3:100.
Wherein the second emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfonate.
Wherein the aggregate is limestone aggregate.
Wherein the stabilizing auxiliary agent is aromatic oil.
The preparation method comprises the following steps: mixing the emulsified asphalt, the aggregate and the water according to the weight ratio to obtain the water emulsion type modified asphalt.
The application of the water emulsion type modified asphalt is applied to the road paving process.
The road paving process comprises the following steps:
(1) Mixing: adding emulsified asphalt, aggregate and water in a mixing machine according to the weight ratio, and mixing;
(2) Transportation: arranging a loading dump truck to transport the mixed modified asphalt to a construction position;
(3) Paving: the paver uniformly paves the modified asphalt on the pavement;
(4) Compacting: sequentially performing initial pressing, re-pressing and final pressing on the paved asphalt pavement;
(5) Scribing: the scribing machine coats scribing paint on the asphalt pavement.
Example 4
This example is a further implementation of example 1:
the scribing paint is prepared by the following steps:
45 parts by weight of titanium dioxide, 18.9 parts by weight of butyl acrylate, 24.4 parts by weight of methyl acrylate, 2.5 parts by weight of acrylic acid, 3.5 parts by weight of emulsifier and 0.35 part by weight of ammonium persulfate are added into 100 parts by weight of deionized water, stirred and mixed, heated to 70 ℃ and subjected to heat preservation reaction for 75 minutes, and then a mixed solution consisting of 10.4 parts by weight of butyl acrylate, 7.4 parts by weight of methyl acrylate, 7.4 parts by weight of diacetone acrylamide and 0.15 part by weight of ammonium persulfate is gradually added dropwise, the temperature is kept to react in the dropwise adding process, and the dropwise adding time is controlled to be 105 minutes, so that a first latex is obtained;
B. adding 65 parts by weight of titanium dioxide, 75 parts by weight of talcum powder and 14.5 parts by weight of adipic dihydrazide into 100 parts by weight of deionized water, and performing high-speed dispersion at a rotating speed of 700r/min to obtain second latex;
C. and (3) dispersing the first latex and the second latex at a high speed according to the weight ratio of 1.5:1, setting the rotating speed to be 700r/min for 30min, then adding an auxiliary agent, continuing to disperse at a high speed for 5min, and marking to obtain the marking paint.
The particle size D50 of the titanium dioxide of the marking paint is preferably 0.4 mu m, and the particle size D50 of the talcum powder is 6 mu m.
Example 5
This embodiment differs from embodiment 4 in that:
the scribing paint is prepared by the following steps:
adding 40 parts by weight of titanium dioxide, 16.3 parts by weight of butyl acrylate, 22.3 parts by weight of methyl acrylate, 2 parts by weight of acrylic acid, 3 parts by weight of emulsifier and 0.3 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65 ℃ and preserving heat for reaction for 60min, then gradually dropwise adding a mixed solution consisting of 9.4 parts by weight of butyl acrylate, 6.4 parts by weight of methyl acrylate, 5.3 parts by weight of diacetone acrylamide and 0.1 part by weight of ammonium persulfate, keeping the temperature for reaction in the dropwise adding process, and controlling the dropwise adding time to 90min to obtain first latex;
B. adding 60 parts by weight of titanium dioxide, 70 parts by weight of talcum powder and 10 parts by weight of adipic dihydrazide into 100 parts by weight of deionized water, and performing high-speed dispersion at the rotating speed of 600r/min to obtain second latex;
C. and (3) dispersing the first latex and the second latex at a high speed according to the weight ratio of 1:1, setting the rotating speed to be 600r/min, continuing for 20min, adding an auxiliary agent, continuing to disperse at a high speed for 2min, and marking to obtain the marking paint.
The particle size D50 of the titanium dioxide of the marking paint is preferably 0.3 mu m, and the particle size D50 of the talcum powder is 2 mu m.
Example 6
This embodiment differs from embodiment 4 in that:
the scribing paint is prepared by the following steps:
adding 50 parts by weight of titanium dioxide, 21.5 parts by weight of butyl acrylate, 26.5 parts by weight of methyl acrylate, 3 parts by weight of acrylic acid, 4 parts by weight of emulsifier and 0.4 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 75 ℃, keeping the temperature for reaction for 90min, and gradually dropwise adding a mixed solution consisting of 11.4 parts by weight of butyl acrylate, 8.4 parts by weight of methyl acrylate, 9.5 parts by weight of diacetone acrylamide and 0.2 part by weight of ammonium persulfate, wherein the temperature is kept for reaction in the dropwise adding process, and the dropwise adding time is controlled at 120min to obtain first latex;
B. adding 70 parts by weight of titanium dioxide, 80 parts by weight of talcum powder and 19 parts by weight of adipic dihydrazide into 100 parts by weight of deionized water, and performing high-speed dispersion at a rotating speed of 800r/min to obtain second latex;
C. and (3) dispersing the first latex and the second latex at a high speed according to the weight ratio of 2:1, setting the rotating speed to be 800r/min, continuing for 40min, adding an auxiliary agent, continuing to disperse at a high speed for 8min, and marking to obtain the marking paint.
The particle size D50 of the titanium dioxide of the marking paint is preferably 0.5 mu m, and the particle size D50 of the talcum powder is 10 mu m.
Comparative example 1
The difference between this comparative example and example 4 is that:
the scribing paint is prepared by the following steps:
45 parts by weight of titanium dioxide, 18.9 parts by weight of butyl acrylate, 24.4 parts by weight of methyl acrylate, 2.5 parts by weight of acrylic acid, 3.5 parts by weight of emulsifier and 0.35 part by weight of ammonium persulfate are added into 100 parts by weight of deionized water, stirred and mixed, heated to 70 ℃ and subjected to heat preservation reaction for 75 minutes, and then a mixed solution consisting of 10.4 parts by weight of butyl acrylate, 7.4 parts by weight of methyl acrylate, 7.4 parts by weight of diacetone acrylamide and 0.15 part by weight of ammonium persulfate is gradually added dropwise, the temperature is kept to react in the dropwise adding process, and the dropwise adding time is controlled to be 105 minutes, so that a first latex is obtained;
B. adding 65 parts by weight of titanium dioxide and 75 parts by weight of talcum powder into 100 parts by weight of deionized water, and performing high-speed dispersion at a rotating speed of 700r/min to obtain second latex;
C. and (3) dispersing the first latex and the second latex at a high speed according to the weight ratio of 1.5:1, setting the rotating speed to be 700r/min for 30min, then adding an auxiliary agent, continuing to disperse at a high speed for 5min, and marking to obtain the marking paint.
Comparative example 2
This comparative example is a commercially available conventional solvent-borne paint line.
The performance test was performed on the paint scribes of example 4, comparative example 1 and comparative example 2, and without any drying treatment, the test items, criteria and results were as follows:
abrasion resistance: GB/T1768-2006 (200 rpm/1000 g, test base material is a sample of corresponding shape made of the aqueous emulsion type modified bitumen of the present invention)
Water resistance: GB/T1733-1993
Adhesion: GB/T1720-2020
| Wear resistance | Water resistance | Adhesion property | |
| Example 4 | 30.1 | Soaking in water for 24 hr without abnormal phenomenon | 3 grade |
| Comparative example 1 | 53.8 | Partial falling off occurs when the water is soaked for 24 hours | Grade 6 |
| Comparative example 2 | 38.6 | Soaking in water for 24 hr without abnormal phenomenon | Grade 4 |
Compared with the test, the conventional solvent-based paint for scribing on the market has better performance, basically meets the use requirement, but has poor effect because the conventional solvent-based paint for scribing is used on an incompletely dried asphalt substrate, and the water-based paint for scribing has better applicability, can be coated without waiting for the drying of the asphalt substrate, and has better wear resistance, water resistance and adhesiveness; as can be seen from a comparison of comparative example 1, the crosslinking promotion effect of adipic acid dihydrazide is one of the key points of the high performance of the marking paint of the present invention, and the conventional physically mixed aqueous marking paint cannot meet the use standard.
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (1)
1. An application of water emulsion type modified asphalt is characterized in that: the method is applied to a road paving process, and the road paving process comprises the following steps of:
(1) Mixing: adding emulsified asphalt, aggregate and water into a mixer according to the weight ratio for mixing;
(2) Transportation: arranging a loading dump truck to transport the mixed modified asphalt to a construction position;
(3) Paving: the paver uniformly paves the modified asphalt on the pavement;
(4) Compacting: sequentially performing initial pressing, re-pressing and final pressing on the paved asphalt pavement;
(5) Scribing: the marking machine coats marking paint on the asphalt pavement; the modified asphalt is water emulsion type modified asphalt, and the water emulsion type modified asphalt comprises the following components in parts by weight: 20-30 parts of emulsified asphalt, 80-100 parts of aggregate and 20-30 parts of water, wherein the emulsified asphalt is prepared by the following steps: heating 100 parts by weight of matrix asphalt to 150-160 ℃, adding 3-9 parts by weight of stabilizing auxiliary agent, preserving heat and stirring for 20-30min, adding 6-12 parts by weight of first emulsifier and 20-30 parts by weight of water, stirring and mixing, adding water-based polyacrylate emulsion, and continuing stirring and mixing to obtain the emulsified asphalt;
the aqueous polyacrylate emulsion is prepared by the following steps: adding 2-6 parts by weight of acrylic acid, 14-20 parts by weight of butyl acrylate, 10-12 parts by weight of methyl methacrylate, 5-9 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 1-3 parts by weight of a second emulsifier and 0.1-0.2 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65-75 ℃ and reacting for 45-75min at a temperature, adding 0.05-0.15 part by weight of ammonium persulfate, and continuing reacting for 45-75min at a temperature to obtain the water-based polyacrylate emulsion;
the passing rate of the aggregate through a 2.36mm sieve is 50-60%, the passing rate of the aggregate through a 1.18mm sieve is 10-14%, and the passing rate of the aggregate through a 0.6mm sieve is 8-10%;
the first emulsifier consists of cetyl trimethyl ammonium chloride, polyoxyethylene nonylphenol ether and water according to the weight ratio of 1-2:1-3:100;
the second emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfonate;
the aggregate is limestone aggregate;
the stabilizing auxiliary agent is aromatic hydrocarbon oil;
the preparation method of the water emulsion type modified asphalt comprises the following steps: mixing the emulsified asphalt, the aggregate and the water according to the weight ratio to obtain the water emulsion type modified asphalt;
the scribing paint is prepared by the following steps:
adding 40-50 parts by weight of titanium dioxide, 16.3-21.5 parts by weight of butyl acrylate, 22.3-26.5 parts by weight of methyl acrylate, 2-3 parts by weight of acrylic acid, 3-4 parts by weight of emulsifying agent and 0.3-0.4 part by weight of ammonium persulfate into 100 parts by weight of deionized water, stirring and mixing, heating to 65-75 ℃ and preserving heat for reacting for 60-90min, then gradually dropwise adding a mixed solution consisting of 9.4-11.4 parts by weight of butyl acrylate, 6.4-8.4 parts by weight of methyl acrylate, 5.3-9.5 parts by weight of diacetone acrylamide and 0.1-0.2 part by weight of ammonium persulfate, and keeping the temperature for reacting during the dropwise adding process, wherein the dropwise adding time is controlled to be 90-120min, so as to obtain a first latex;
B. adding 60-70 parts by weight of titanium dioxide, 70-80 parts by weight of talcum powder and 10-19 parts by weight of adipic dihydrazide into 100 parts by weight of deionized water, and dispersing at a high speed of 600-800r/min to obtain second latex;
C. and (3) performing high-speed dispersion on the first latex and the second latex according to the weight ratio of 1-2:1, setting the rotating speed to be 600-800r/min, continuing for 20-40min, adding an auxiliary agent, and continuing to perform high-speed dispersion for 2-8min to obtain the marking paint.
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