CN116063881B - Water-based quick-drying coating, coupling anti-icing coating, and preparation and evaluation methods thereof - Google Patents
Water-based quick-drying coating, coupling anti-icing coating, and preparation and evaluation methods thereof Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 112
- 239000011248 coating agent Substances 0.000 title claims abstract description 108
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- 238000001035 drying Methods 0.000 title claims abstract description 44
- 238000011156 evaluation Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 230000008878 coupling Effects 0.000 title description 11
- 238000010168 coupling process Methods 0.000 title description 11
- 238000005859 coupling reaction Methods 0.000 title description 11
- 239000000463 material Substances 0.000 claims abstract description 60
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000007710 freezing Methods 0.000 claims abstract description 20
- 239000000080 wetting agent Substances 0.000 claims abstract description 20
- 230000008014 freezing Effects 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 15
- 239000003973 paint Substances 0.000 claims abstract description 15
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- 229920001577 copolymer Polymers 0.000 claims abstract description 10
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- 238000003756 stirring Methods 0.000 claims description 38
- 238000011068 loading method Methods 0.000 claims description 30
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 25
- 238000005299 abrasion Methods 0.000 claims description 24
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 15
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 claims description 15
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- 238000002156 mixing Methods 0.000 claims description 13
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
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- 238000000034 method Methods 0.000 claims description 11
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- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
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- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 239000012876 carrier material Substances 0.000 claims description 5
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- 239000005871 repellent Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012047 saturated solution Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 239000010426 asphalt Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000012153 distilled water Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 18
- -1 polysiloxane Polymers 0.000 description 11
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 8
- 239000004575 stone Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 5
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- 239000002245 particle Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 description 4
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- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- LUYGICHXYUCIFA-UHFFFAOYSA-H calcium;dimagnesium;hexaacetate Chemical compound [Mg+2].[Mg+2].[Ca+2].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O LUYGICHXYUCIFA-UHFFFAOYSA-H 0.000 description 2
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- 238000001764 infiltration Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
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- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
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- 239000000654 additive Substances 0.000 description 1
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- 229910001628 calcium chloride Inorganic materials 0.000 description 1
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- 238000013329 compounding Methods 0.000 description 1
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- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
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- 239000011707 mineral Substances 0.000 description 1
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- 239000000049 pigment Substances 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Classifications
-
- 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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a water-based quick-drying coating, a coupled anti-icing coating, a preparation method and an evaluation method thereof, and solves the technical problem that the adhesion between the existing anti-icing coating and an asphalt pavement is poor. The water-based quick-drying paint comprises the following components in parts by weight: 7-7.5 parts of styrene/acrylic ester copolymer, 0.4-0.6 part of silane coupling agent, 0.4-0.5 part of quartz powder, 0.3-0.4 part of cosolvent, 0.1-0.2 part of wetting agent, 0.4-0.6 part of filler, 0.5-0.7 part of defoamer and 0.4-0.5 part of water, wherein the coupled anti-icing coating comprises the following components in parts by weight: 9-10.5 parts of water-based quick-drying paint, 2-4 parts of self-regulating low freezing point material, 0.07-0.08 part of dispersing agent, 0.2-0.4 part of wetting agent and 1-2 parts of water. The anti-icing coating provided by the invention has the advantages of good adhesion capability with asphalt pavement, good anti-icing effect and the like.
Description
Technical Field
The invention relates to the technical field of anti-icing coatings, in particular to a water-based quick-drying coating, a coupling anti-icing coating, a preparation method and an evaluation method.
Background
With the turning of the road construction center in China to the western region, snow and ice on the road surface in winter become a difficult problem to be solved by road practitioners.
The anti-icing coating is formed by mixing emulsified asphalt or resin material serving as a matrix material, self-speed-regulating low-freezing-point material and additive, is sprayed on a road surface before winter, actively releases substances for lowering the freezing point by utilizing the load effect of vehicles and other external effects, weakens the binding force of an ice-road interface, can play the active ice prevention effect, is convenient and quick to construct, can improve the manual and mechanical ice and snow removing efficiency, reduces the damage to the road surface, and is an economic and efficient technical means, so that the anti-icing coating is widely focused and researched.
The continuous improvement of the properties of ice-resistant coatings applied to road surfaces, including low temperature properties, adhesion properties and wear resistance, is a long-term technical problem to be solved in the art.
In the prior art of the subject group, CN113604118A, a durable anti-icing coating and a method for preparing the same, discloses a durable anti-icing coating which is obtained by compounding an aqueous quick-drying coating with a self-regulating low-freezing point material, a dispersing agent, distilled water and a wetting agent, wherein the aqueous quick-drying coating consists of a film-forming resin, a filler, a pigment, water, a cosolvent and an auxiliary agent, and the durable anti-icing coating has better wear resistance.
However, in the previous researches, the slow release effect of the low-temperature material, the low-temperature durability and the bonding effect of the coating and the old pavement are still insufficient, in addition, the test on the durability of the coating is also lack of an evaluation method for reliably attaching the actual working condition, the comprehensive effect of simulating the abrasion of rainwater and wheels is not generated, and the evaluation index is not related to the actual service life.
Based on the technical problems still existing in the present subject group, development of an anti-icing coating with more excellent comprehensive performance and development of an evaluation method suitable for durability of the material are continued.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the water-based quick-drying paint has insufficient adhesiveness when applied to the anti-icing coating, and the low-temperature performance of the anti-icing coating needs to be further improved.
The invention is realized by the following technical scheme:
the water-based quick-drying paint comprises the following components in parts by weight:
7-8 parts of styrene/acrylic ester copolymer, 0.4-0.6 part of silane coupling agent, 0.4-0.5 part of quartz powder, 0.3-0.8 part of cosolvent, 0.1-0.2 part of wetting agent, 0.4-0.6 part of filler, 0.05-0.07 part of defoamer and 0.4-0.8 part of water.
The water-based quick-drying coating adopts the environment-friendly styrene/acrylic ester copolymer as a matrix, has good water solubility, is environment-friendly, and has excellent adhesion property. The silane coupling agent has two functional groups with completely different properties, when the water-based quick-drying coating is prepared into a coating for asphalt pavement, the coupling agent forms a polysiloxane coupling layer on the surfaces of quartz powder and stone to form chemical adsorption, hydrogen bond and covalent bond are generated, and the cohesive force and durability of the coating and aggregate are greatly improved; the silane coupling layer reduces the contact angle between the coating and the surface of the aggregate, and can improve the wetting and infiltration speed of the coating on the surface of the aggregate. The organophilic groups introduced by the silane coupling layer form covalent bonds or hydrogen bonds with the coating matrix material, the quartz powder and the self-speed-regulating low-freezing-point material to be intertwined and integrated into the coating, so that the bonding performance of the styrene/acrylic ester, the self-speed-regulating low-freezing-point material and the asphalt mixture is further enhanced, and the service life is prolonged.
Preferably, the water-based quick-drying paint further comprises carbon black color paste, the addition amount of the carbon black color paste is 0.05-0.15 part by weight, and the carbon black color paste is favorable for keeping the paint and the pavement consistent in color.
Preferably, the silane coupling agent is one of KH550, KH560, and KH 570.
Preferably, the cosolvent comprises ethylene glycol butyl ether and propylene glycol.
Further, the ratio of the dosage of the ethylene glycol butyl ether to the dosage of the propylene glycol is 4:3.
preferably, the wetting agent is a nonionic surfactant compound, the filler is talcum powder, and the defoamer is polyether modified organic silicon.
Preferably, the styrene/acrylic ester copolymer emulsion is milky white blue light liquid, the solid content is 47% -49%, and the PH value is 7-9.
The matrix material has good bonding effect, is favorable for bonding the coating and the original pavement, has weak pH value and is matched with most aggregates.
A preparation method of the water-based quick-drying paint is used for preparing the water-based quick-drying paint and comprises the following steps:
step 1: dissolving the styrene/acrylic ester copolymer emulsion by adopting water;
step 2: adding a defoaming agent, a cosolvent, a wetting agent and water into the product of the step 1, and uniformly dispersing;
step 3: adding filler and water into the product of the step 2 and uniformly dispersing;
step 4: adding cosolvent and water into the product of the step 3 and uniformly dispersing;
step 5: adding quartz powder and water into the product of the step 4 and uniformly dispersing;
step 6: adding a silane coupling agent and water into the product of the step 5 and uniformly dispersing;
step 7: and (3) adding carbon black color paste and water into the product of the step (6) and uniformly dispersing to obtain the water-based quick-drying coating.
Other substances react with the matrix material, and water added step by step can dilute to reduce viscosity, and water is added step by step, so that the construction is convenient.
The coupled anti-icing coating comprises the following components in parts by weight:
9-11 parts of water-based quick-drying paint, 2-4 parts of self-speed-regulating low-freezing-point material, 0.07-0.08 part of dispersing agent, 0.2-0.4 part of wetting agent and 1-2 parts of water.
The water-based quick-drying coating is a coating prepared from the water-based quick-drying coating, the self-speed-regulating low-freezing-point material, the dispersing agent and the wetting agent, wherein the water-based quick-drying coating adopts environment-friendly styrene/acrylic ester copolymer emulsion as a matrix, has good water solubility, is environment-friendly, and has excellent adhesion performance.
The quartz powder in the coating has the advantages of chemical inertness, acid resistance, heat resistance and high hardness, and improves the rain erosion resistance, wear resistance and corrosion resistance of the coating and weather resistance. The coupling agent improves the interface mechanism between the coating and the asphalt pavement as follows: after the coating is sprayed on the stone surface, the coupling agent reacts with residual moisture on the stone surface pores, so that the influence of the moisture on the interface between the coating and the stone is reduced, the bonding area of the matrix material and the stone is increased, and favorable mechanical bonding is formed; the coupling agent forms a polysiloxane coupling layer on the surfaces of quartz powder and stone materials to form chemical adsorption, and hydrogen bond and covalent bond are generated, so that the cohesive force and durability of the coating and aggregate are greatly improved; the silane coupling layer reduces the contact angle between the coating and the surface of the aggregate, and can improve the wetting and infiltration speed of the coating on the surface of the aggregate. The organophilic groups introduced by the silane coupling layer form covalent bonds or hydrogen bonds with the coating matrix material, the quartz powder and the self-speed-regulating low-freezing-point material to be intertwined and integrated into the coating, so that the bonding performance of the styrene/acrylic ester, the self-speed-regulating low-freezing-point material and the asphalt mixture is further enhanced, and the service life is prolonged.
Preferably, the wetting agent is a nonionic surfactant formulation.
Preferably, the composition of the self-velocity-regulating low freezing point material is as follows: the self-velocity-regulating low-freezing-point material comprises a porous carrier material, an inorganic or organic snow-melting agent, a velocity regulator and a water repellent, wherein the particle size of the self-velocity-regulating low-freezing-point material is 75 mu m.
The self-speed-regulating low freezing point material comprises the following preparation methods in parts by weight:
step 1: stirring and adsorbing a saturated solution of the porous carrier material and an inorganic or organic snow-melting agent at 80 ℃ for 8 hours, and drying and crushing the material;
step 2: adding PEG binary phase change material into absolute ethyl alcohol, mixing with the material mixture obtained in step 1, and dynamically adsorbing in a vacuum drying oven for 1.5h;
step 3: and 2, stirring and heating the material to 60 ℃, adding a coupling agent, stirring for 0.5h, adding a water repellent, stirring for 0.5h, drying and crushing.
The PEG binary phase change material is formed by stirring and mixing PEG400 and PEG600, and the proportion (mass ratio) of the PEG400 is as follows: peg600=1 to 1.5:1.
The porous adsorption material is as follows: diatomaceous earth.
The snow-melting agent is inorganic salt or organic salt, wherein the inorganic salt comprises sodium chloride and calcium chloride, and the organic salt comprises calcium magnesium acetate and formate.
The hydrophobic agent adopted in the hydrophobic treatment is organic silicon.
The self-regulating low freezing point material is used for lowering the freezing point of road surface under negative temperature, but the speed regulator needs to be used at about 5 ℃ to enable the material to be quickly released at the temperature, so that the material with the phase-change temperature of about 5 ℃ needs to be selected.
A preparation method of a coupled anti-icing coating prepares the coupled anti-icing coating, which comprises the following steps:
step S1: taking a material with low speed regulation and low freezing point, adding water, a wetting agent and a dispersing agent, and uniformly dispersing to obtain a dispersion liquid;
step S2: and (3) adding the dispersion liquid obtained in the step (S1) into the water-based quick-drying paint, and uniformly dispersing to obtain a coating material.
The using method of the coupling type anti-icing coating comprises the following steps: and spraying construction is adopted, and the construction air temperature is not lower than 15 ℃.
A durability evaluation method of a coupled anti-icing coating comprises the following steps:
step 1: forming a rut board with the thickness of 5cm by adopting an AC-13 mixture;
step 2: preparing an anti-icing coating with white color paste according to 0.6kg/m 2 The amount of coating applied, the coating being applied uniformly to the rut board, the tire being in the active position shown in FIG. 2A square of 30cm multiplied by 30cm is adopted for marking strokes;
step 3: placing the rut board to a fixed position according to the position shown in fig. 2, preserving heat for 4 hours at 5 ℃, putting down a loading wheel, and starting pressurization;
step 4: starting the abrasion instrument to carry out loading test, suspending the equipment every 20000 times, and photographing the positions of different square marks;
step 5: stopping loading after 400000 times, identifying the picture by adopting an image pro plus piece, identifying the exposed aggregate area, calculating the abrasion loss rate under different loading times, and drawing a loss rate-loading times curve;
l-wear loss rate; a1-exposed aggregate area in the worn square; a-square area, 0.09m 2 ；
Step 6: the actual pot life of the coating was calculated based on the annual average daily traffic data of physical engineering, with 80% wear loss as a criterion.
The service life of the C-coating; loading times corresponding to the H-80% abrasion loss rate; AADT-average daily traffic on road segments.
The invention has the following advantages and beneficial effects:
1. the styrene/acrylic ester copolymer contains polar groups, enhances the adhesion between the styrene/acrylic ester emulsion and mineral aggregate in asphalt through hydrogen bonds and intermolecular Van der Waals force, effectively resists the scouring action of running water, has high hardness and good toughness, and can effectively resist the abrasion action of wheels.
2. The invention develops a coupling type environment-friendly anti-icing coating, optimizes the bonding effect of water-based paint, low-freezing-point filler and asphalt pavement through the action of a coupling agent, improves the high temperature resistance, rainwater and corrosion resistance of the coating, improves the rain erosion resistance and wheel abrasion resistance of the coating, prolongs the service life of the coating, and can practically play the role of delaying pavement freezing in winter.
3. The invention enhances the anti-icing performance by improving the phase change material of the self-speed-regulating low-freezing-point material.
4. According to the invention, by improving the durability evaluation method, the comprehensive actions of the physical engineering air temperature, the rainwater and the wheels are simulated, the actual tire action is adopted, the ground pressure is 0.7MPa, the actual operation environment is more similar, and the service life of the material can be truly reacted; the method can adjust the loading rate, can carry out 4-6 ten thousand times per day, can shorten the test time to about 7-10 days, can accelerate the evaluation of the durability of the material, and is beneficial to physical engineering application; the evaluation index considers the difference of traffic in different areas, and the result is directly the use time, so that the selection of materials in different areas can be facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a thermogravimetric analysis of the low freezing point material of example 1 of the present invention.
Figure 2 is a graph of the trace area of the abrasion instrument in the evaluation of the durability of the coating according to the present invention.
FIG. 3 is a photograph of the accelerated wear test process of a coating according to the present invention.
Figure 4 is a view of a 12 ten thousand wear image recognition condition,
(a) abrasion pattern of comparative example 1, (b) abrasion pattern of example 1-1, (c) abrasion pattern of example 1-2, and (d) abrasion pattern of example 1-3.
FIG. 5 shows the bare fraction of inventive examples 1-1, 1-2 and 1-3 and comparative example 1 at various loading times.
FIG. 6 is a conductivity test comparative curve for inventive example 1-1 and comparative example 2.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1-1
A method for preparing an anti-icing coating, comprising the steps of:
step 1: taking 750g of styrene/acrylic ester emulsion, wherein the solid content of the styrene/acrylic ester emulsion is 48%, the PH is 8, 20g of distilled water, and stirring for 30min to fully dissolve;
step 2: adding 6g of defoamer, 20g of ethylene glycol butyl ether, 15g of propylene glycol, 14g of Tagn 6076 wetting agent and 10g of distilled water into the product in the step 1, and stirring for 30min to uniformly disperse;
step 3: adding 50g of filler into the product obtained in the step 2, wherein the filler is talcum powder, and stirring for 1h to uniformly disperse;
step 4: adding 20g of ethylene glycol butyl ether, 15g of propylene glycol and 10g of distilled water into the product obtained in the step 3, and stirring for 30min to uniformly disperse;
step 5: adding 50g of quartz powder with the particle size of 200 meshes and 10g of distilled water into the product obtained in the step 4, and stirring for 30min to uniformly disperse;
step 6: adding 50g of silane coupling agent KH550 into the product of the step 5, and uniformly dispersing to obtain a primary water-based quick-drying coating;
step 7: adding 10g of carbon black color paste and 10 parts of distilled water into the product of the step 6, stirring for 30min, and uniformly dispersing to obtain a water-based quick-drying coating;
step 8: and (3) adding 150g of distilled water, 30g of a Tagn 6076 wetting agent and 7.5g of a Tagn 276 dispersing agent into 300g of the self-regulating low freezing point material, stirring for 2min to obtain a dispersion liquid, and stirring and mixing the dispersion liquid with the water-based quick-drying coating in the step (7) for 10min to obtain the mixed coating.
The self-speed-regulating low freezing point material comprises the following components: the self-velocity-regulating low-freezing-point material comprises a porous carrier material, an inorganic or organic snow-melting agent, a velocity regulator and a water repellent, wherein the particle size of the self-velocity-regulating low-freezing-point material is 75 mu m.
The self-speed-regulating low-freezing-point material comprises the following preparation methods in parts by weight:
step 1: stirring and adsorbing a saturated solution of the porous carrier material and an inorganic or organic snow-melting agent at 80 ℃ for 8 hours, and drying and crushing the material;
step 2: adding a speed regulator PEG binary phase change material into absolute ethyl alcohol, mixing with the material mixture obtained in the step 1, and dynamically adsorbing in a vacuum drying oven for 1.5h;
step 3: and 2, stirring and heating the material to 60 ℃, adding a coupling agent, stirring for 0.5h, adding a water repellent, stirring for 0.5h, drying and crushing.
The PEG binary phase change material is formed by stirring and mixing PEG400 and PEG600, and the proportion (mass ratio) of the PEG400 is as follows: pe600=1:1.
The porous adsorption material is as follows: diatomaceous earth.
The snow-melting agent is an organic salt, and the organic salt comprises calcium magnesium acetate and formate.
The hydrophobic agent adopted in the hydrophobic treatment is organic silicon.
The self-speed-regulating low-freezing-point material prepared by the invention has a slow-release effect and a speed regulation effect, does not basically release the snow-melting component in hot summer, accelerates the release of the snow-melting component in cold winter, and improves the ice-melting effect and the use time limit of the coating in winter.
Examples 1 to 2
A method for preparing an anti-icing coating, comprising the steps of:
step 1: taking 750g of styrene/acrylic ester emulsion, wherein the solid content of the styrene/acrylic ester emulsion is 48%, the PH is 8, 20g of distilled water, and stirring for 30min to fully dissolve;
step 2: adding 6g of defoamer, 20g of ethylene glycol butyl ether, 15g of propylene glycol, 14g of Tagn 6076 wetting agent and 10g of distilled water into the product in the step 1, and stirring for 30min to uniformly disperse;
step 3: adding 50g of filler into the product obtained in the step 2, wherein the filler is talcum powder, and stirring for 1h to uniformly disperse;
step 4: adding 20g of ethylene glycol butyl ether, 15g of propylene glycol and 10g of distilled water into the product obtained in the step 3, and stirring for 30min to uniformly disperse;
step 5: and (3) adding 50g of quartz powder with the particle size of 200 meshes and 10g of distilled water into the product obtained in the step (4), and stirring for 30min to uniformly disperse to obtain the primary water-based quick-drying coating.
Step 6: adding 10g of carbon black color paste and 10 parts of distilled water into the product of the step 5, stirring for 30min, and uniformly dispersing to obtain a water-based quick-drying coating;
step 7: and (3) adding 150g of distilled water, 30g of a Tagn 6076 wetting agent and 7.5g of a Tagn 276 dispersing agent into 300g of the self-regulating low freezing point material, stirring for 2min to obtain a dispersion liquid, and stirring and mixing the dispersion liquid with the water-based quick-drying coating in the step (6) for 10min to obtain the mixed coating.
The self-regulating low freezing point material is the same as in example 1-1.
Examples 1 to 3
A method for preparing an anti-icing coating, comprising the steps of:
step 1: taking 750g of styrene/acrylic ester emulsion, wherein the solid content of the styrene/acrylic ester emulsion is 48%, the PH is 8, 20g of distilled water, and stirring for 30min to fully dissolve;
step 2: adding 6g of defoamer, 20g of ethylene glycol butyl ether, 15g of propylene glycol, 14g of Tagn 6076 wetting agent and 10g of distilled water into the product in the step 1, and stirring for 30min to uniformly disperse;
step 3: adding 50g of filler into the product obtained in the step 2, wherein the filler is talcum powder, and stirring for 1h to uniformly disperse;
step 4: adding 20g of ethylene glycol butyl ether, 15g of propylene glycol and 10g of distilled water into the product obtained in the step 3, and stirring for 30min to uniformly disperse;
step 5: adding 50g of silane coupling agent KH550 into the product of the step 4, and uniformly dispersing to obtain a primary water-based quick-drying paint;
step 6: adding 10g of carbon black color paste and 10 parts of distilled water into the product of the step 5, stirring for 30min, and uniformly dispersing to obtain a water-based quick-drying coating;
step 7: and (3) adding 150g of distilled water, 30g of a Tagn 6076 wetting agent and 7.5g of a Tagn 276 dispersing agent into 300g of the self-regulating low freezing point material, stirring for 2min to obtain a dispersion liquid, and stirring and mixing the dispersion liquid with the water-based quick-drying coating in the step (6) for 10min to obtain the mixed coating.
Example 2-example 6
Examples 2-6 differ from example 1 in the mass ratio of phase change materials PEG400 and PEG600, with specific results shown in table 1 below:
TABLE 1 phase transition temperatures of the speed regulators in examples 1-1, 1-2, 1-3 to example 6
| Examples | Material | Transformation temperature/DEGC |
| Example 2 | PEG400 | -13.18 |
| Example 3 | PEG600 | 14.15 |
| Example 4 | PEG400：PEG600＝2：1 | -0.33 |
| Example 5 | PEG400：PEG600＝1.5：1 | 1.53 |
| Examples 1-1, 1-2 and 1-3 | PEG400：PEG600＝1：1 | 4.86 |
| Example 6 | PEG400：PEG600＝1：2 | 10.86 |
As can be seen from the differential scanning calorimetric analysis results in Table 1, the phase transition temperature of the single PEG material is either too low at-13.18 ℃ or too high at 14.15 ℃, and the two materials are required to be mixed and matched for use, namely PEG400: pe600=1.5: the phase transition temperature at 1 is 1.53 ℃, PEG400: pe600=1: the phase transition temperature at 1 is 4.86 ℃, and the use environment is required between the two mixing proportions.
As can be seen from the thermogravimetric curve of fig. 1, as the temperature increases, the mass of the phase change material decreases slowly, and after reaching a certain temperature, decreases rapidly until all losses. The initial weight loss temperature of tetradecane is 84.9 ℃, and the initial weight loss temperatures of PEG400, PEG600 and binary phase change materials are all higher than 200 ℃, and the quality is completely lost at about 400 ℃. The use temperature of the asphalt mixture is usually 145-195 ℃, and the quality loss of other three materials except tetradecane can not occur in the mixing and transportation processes of the asphalt mixture.
Comparative example 1
This example differs from example 1 in that no silane coupling agent nor quartz powder was added in the preparation of the aqueous quick-drying coating.
The coating durability of the embodiment 1-1, 1-2, 1-3 and the comparative example 1 is evaluated, an accelerated abrasion tester is adopted, the temperature of the tester is controllable, water is sprayed in the loading process, the effects of air temperature, rainwater and real road conditions of wheels can be simulated, as shown in fig. 2 and 3, wherein the abrasion tester is in the prior art, the abrasion tester carries out circular accelerated loading on the road surface at the bottom through 2 loading wheels with the pressure of 0.7MPa, the loading rate is 3600r/h at the maximum, and the service life of the coating can be accelerated and evaluated. The test method is as follows:
step 1: forming a rut board with the thickness of 5cm by adopting an AC-13 mixture;
step 2:preparing an anti-icing coating with white color paste according to 0.6kg/m 2 The brushing amount is that the coating is uniformly brushed on the rut board, and the tire action position shown in fig. 2 adopts a square with mark strokes of 30cm multiplied by 30 cm;
step 3: placing the rut board to a fixed position according to the position shown in fig. 2, preserving heat for 4 hours at 5 ℃, putting down a loading wheel, and starting pressurization;
step 4: starting the abrasion instrument to carry out loading test, suspending the equipment every 20000 times, and photographing the positions of different square marks;
step 5: stopping loading after 400000 times, identifying the picture by adopting an image pro plus piece, identifying the exposed aggregate area, calculating the abrasion loss rate under different loading times, and drawing a loss rate-loading times curve;
l-wear loss rate; a1-exposed aggregate area in the worn square; a-square area, 0.09m 2 。
Step 6: the actual pot life of the coating was calculated based on the annual average daily traffic data of physical engineering, with 80% wear loss as a criterion.
The service life of the C-coating; loading times corresponding to the H-80% abrasion loss rate; AADT-average daily traffic on road segments.
The coatings prepared in examples 1-1, 1-2, 1-3 and comparative example 1 were subjected to accelerated abrasion test 40 ten thousand times by the above-mentioned evaluation method, the rut test pieces were photographed every time of abrasion for a certain number of times, the bare rate was calculated, the number of loading times was obtained with 80% bare rate as a standard, and the service time of the coating could be converted according to the annual average daily traffic 4892 pieces/day at high speed in engineering yaxi, and the results after abrasion of the coatings in comparative examples 1-1, 1-2 and 1-3 for 12 ten thousand times were as shown in fig. 4 (a), 4 (b), 4 (c) and 4 (d), wherein gray is the worn-out portion.
As the number of loading increases, the bare rate of examples 1-1, 1-2, 1-3 and comparative example 1 all increased, and at the same number of loading, the bare rate of examples 1-1, 1-2, 1-3 was smaller than that of comparative example 1, with the bare rate of example 1-1 being the least. After the exposure rate is more than 80%, the coating on the surface of the large particles is completely worn away, and only materials in the macroscopic texture of the pavement are remained, so that the later rate increasing area is gentle. The number of times of vehicle actions that can be sustained was calculated using 80% loss as a standard, and as shown in table 2, it can be seen that examples 1-1, 1-2, and 1-3 can withstand significantly more loads than comparative example 1, and the service time was increased by 1.1 month, 0.5 month, and 0.9 month, respectively, by conversion. It can be seen that examples 1-1, 1-2 and 1-3 all have the effect of prolonging the service life of the coating, but the effect of example 1-1 is better than that of examples 1-2 and 1-3, thereby proving that the durability of the anti-icing coating is improved under the cooperation of the silane coupling agent and the quartz powder.
TABLE 2 coating service time
| Coating layer | 80% bare rate corresponds to the number of loads | Usable time/month |
| Comparative example 1 | 233045 | 1.6 |
| Example 1-1 | 380107 | 2.7 |
| Examples 1 to 2 | 301115 | 2.1 |
| Examples 1 to 3 | 350391 | 2.5 |
In addition, this durability evaluation method used in the present invention has the following advantages:
(1) The comprehensive effects of physical engineering air temperature, rainwater and wheels are considered, the effect of a real tire is adopted, the ground pressure is 0.7MPa, the ground pressure is closer to the actual operation environment, and the service life of the material can be truly reacted.
(2) The loading rate can be adjusted, 4-6 ten thousand times of loading can be carried out each day, the test time can be shortened to about 7-10 days, the durability of the evaluation material can be accelerated, and the application of physical engineering is facilitated.
(3) The evaluation index considers the difference of traffic in different areas, and the result is directly the use time, so that the selection of materials in different areas can be facilitated.
Comparative example 2
The difference between this example and example 1 is that the current common self-velocity-regulating low-freezing point material is adopted, and the self-velocity-regulating low-freezing point material is prepared by the method of patent No. CN201210593218.3, which is a preparation method of asphalt mixture slow-release complex salt filler.
Examples 1-1 and comparative example 2 were conducted at a rate of 0.45kg/m 2 The surface of a Marshall test piece is coated with the coating, after the coating is completely dried and fixed on the surface of the test piece, the test piece is put into a 2000ml beaker, distilled water with different temperatures is added, and after the test piece is insulated for 1h in a water bath with corresponding water temperature, the conductivity is tested. As shown in FIG. 6, the conductivity curves for example 1-1 and comparative example 2, it can be seen that example 1-1 increased the conductivity by more than 27% at 15℃and decreased the conductivity by more than 32% at 60 ℃. The self-speed-regulating low freezing point has the speed regulating function, and realizes the low speedThe temperature (5 ℃) is quickly released, and the temperature (60 ℃) is slowly released at high temperature.
Examples 1-1 and comparative example 2 were conducted at a rate of 0.45kg/m 2 The test piece surface is coated to 150mm rotary compaction, after the coating is completely dried and fixed on the test piece surface, the test piece surface is put into a silica gel test mold, water forming a 0.5mm ice layer is added between two test pieces under different temperature conditions, the temperature is controlled for more than 4 hours in a control box, the ice layer and the test pieces are fully bonded into a whole, the test pieces are filled into an interlayer bonding clamp, an upper test piece is fixed on one plate of the clamp, the joint of the fixed plate and the movable plate is aligned with the bonding surface of the ice layer and the test piece, the movable plate is loaded in UTM, the loading rate is 25mm/min, the bonding force of the ice layer and the pavement under different conditions is tested, and the test results are shown in the following table 3.
The binding force of the embodiment 1-1 is smaller than that of the comparative example 2 at different temperatures, and the self-regulating speed-regulating low freezing point material provided by the invention can be used for obviously improving the anti-icing effect at low temperature.
TABLE 3 adhesion test results for example 1-1 and comparative example 2
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The coupled anti-icing coating is characterized by comprising the following components in parts by weight:
9-11 parts of water-based quick-drying paint, 2-4 parts of self-speed-regulating low-freezing-point material, 0.07-0.08 part of dispersing agent, 0.2-0.4 part of wetting agent, 1-2 parts of water,
the water-based quick-drying paint comprises the following components in parts by weight:
7.5 parts of styrene/acrylic ester copolymer emulsion, 0.5 part of silane coupling agent, 0.5 part of quartz powder, 0.7 part of cosolvent, 0.14 part of wetting agent, 0.5 part of filler, 0.06 part of defoamer and 0.6 part of water, wherein the cosolvent comprises ethylene glycol butyl ether and propylene glycol, the water-based quick-drying coating further comprises carbon black color paste, the addition amount of the carbon black color paste is 0.1 part, the styrene/acrylic ester copolymer emulsion is milky white blue liquid, the solid content is 47% -49%, and the PH value is 7-9;
the preparation method of the self-speed-regulating low-freezing-point material comprises the following steps:
step 1: stirring and adsorbing a saturated solution of the porous carrier material and an inorganic or organic snow-melting agent at 80 ℃ for 8 hours, and drying and crushing the material;
step 2: adding a PEG binary phase change material into absolute ethyl alcohol, mixing the absolute ethyl alcohol with the material obtained in the step 1, and dynamically adsorbing the mixture in a vacuum drying oven for 1.5 hours, wherein the PEG binary phase change material is formed by stirring and mixing PEG400 and PEG600, and the mass ratio of the PEG400 to the PEG600 is 1-1.5:1;
step 3: and (3) stirring and heating the material obtained in the step (2) to 60 ℃, adding a coupling agent, stirring for 0.5h, adding a water repellent, stirring for 0.5h, drying and crushing.
2. The coupled anti-icing coating according to claim 1, wherein the preparation method of the water-based quick-drying coating comprises the following steps:
step 1: dissolving the styrene/acrylic ester copolymer emulsion by adopting water;
step 2: adding a defoaming agent, a cosolvent, a wetting agent and water into the product of the step 1, and uniformly dispersing;
step 3: adding filler and water into the product of the step 2 and uniformly dispersing;
step 4: adding cosolvent and water into the product of the step 3 and uniformly dispersing;
step 5: adding quartz powder and water into the product of the step 4 and uniformly dispersing;
step 6: adding a silane coupling agent and water into the product of the step 5, and uniformly dispersing to obtain a primary water-based quick-drying coating;
step 7: and (3) adding 0.1 part of carbon black color paste and water into the product of the step (6) and uniformly dispersing to obtain the water-based quick-drying coating.
3. A method for preparing a coupled anti-icing coating, characterized in that it is used for preparing a coupled anti-icing coating according to claim 1 or 2, comprising the following steps:
step S1: taking a material with low speed regulation and low freezing point, adding water, a wetting agent and a dispersing agent, and uniformly dispersing to obtain a dispersion liquid;
step S2: and (3) adding the dispersion liquid obtained in the step (S1) into the water-based quick-drying paint, and uniformly dispersing to obtain a coating material.
4. The durability evaluation method of the coupled anti-icing coating is characterized by comprising the following steps of:
step 1: preparing a rut board;
step 2: mixing white color paste with the anti-icing coating according to any one of claims 1-3, uniformly brushing the coating of the mixed white color paste onto a track plate, and marking squares at the action positions of the tires;
step 3: placing the rut board at a fixed position, preserving heat at 5 ℃, putting down the loading wheel, and starting to pressurize;
step 4: starting the abrasion instrument to carry out loading test, suspending the equipment every m times, and photographing different square mark positions;
step 5: after n times are reached, wherein n is more than m, stopping loading, identifying the picture by adopting an image pro plus piece, identifying the area of bare aggregate, calculating the abrasion loss rate under different loading times, and drawing a loss rate-loading times curve;
l-wear loss rate; a1-exposed aggregate area in the worn square; a-square area;
step 6: calculating the practical usable time of the coating based on the average daily traffic data of physical engineering year by taking the p% abrasion loss rate as a standard,
the service life of the C-coating; loading times corresponding to the H-p% abrasion loss rate; AADT-average daily traffic on road segments; the m=20000, n=400000, p=80.
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