CN112745689A - High-viscosity asphalt material for purifying automobile exhaust and preparation method thereof - Google Patents
High-viscosity asphalt material for purifying automobile exhaust and preparation method thereof Download PDFInfo
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- CN112745689A CN112745689A CN201911040866.4A CN201911040866A CN112745689A CN 112745689 A CN112745689 A CN 112745689A CN 201911040866 A CN201911040866 A CN 201911040866A CN 112745689 A CN112745689 A CN 112745689A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 179
- 239000000463 material Substances 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000003607 modifier Substances 0.000 claims abstract description 38
- 239000002028 Biomass Substances 0.000 claims abstract description 24
- 239000000295 fuel oil Substances 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 17
- 231100000719 pollutant Toxicity 0.000 claims abstract description 17
- 229910052747 lanthanoid Inorganic materials 0.000 claims abstract description 16
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 13
- 229920001400 block copolymer Polymers 0.000 claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 12
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000002602 lanthanoids Chemical class 0.000 claims abstract description 9
- 229910000314 transition metal oxide Inorganic materials 0.000 claims abstract description 9
- 230000003197 catalytic effect Effects 0.000 claims abstract description 8
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 43
- 238000010008 shearing Methods 0.000 claims description 20
- 229910052723 transition metal Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- 150000003624 transition metals Chemical class 0.000 claims description 14
- -1 lanthanide metal oxide Chemical class 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 230000035515 penetration Effects 0.000 claims description 10
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- 239000012075 bio-oil Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- 239000013543 active substance Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910003439 heavy metal oxide Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010909 process residue Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 description 1
- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical class [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- C08K2003/2262—Oxides; Hydroxides of metals of manganese
-
- 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
- C08K2003/2289—Oxides; Hydroxides of metals of cobalt
-
- 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
- C08K2003/2293—Oxides; Hydroxides of metals of nickel
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/50—Inorganic non-macromolecular ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/60—Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye
- C08L2555/70—Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye from natural non-renewable resources
- C08L2555/74—Petrochemicals other than waxes, e.g. synthetic oils, diesel or other fuels, hydrocarbons, halogenated or otherwise functionalized hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/84—Polymers comprising styrene, e.g., polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
-
- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses a high-viscosity asphalt material for purifying automobile exhaust and a preparation method thereof. The high-viscosity asphalt material comprises the following components in parts by weight: 100 parts of matrix asphalt; 1-20 parts of an asphalt modifier; 3-20 parts of biomass heavy oil; 5-18 parts of a thermoplastic block copolymer; 0.1-1 part of a stabilizer; 1-15 parts of DOA. The asphalt modifier takes lanthanide series metal oxide as a carrier and takes transition metal oxide as a catalytic active component. The high-viscosity asphalt material disclosed by the invention can be used for efficiently and durably purifying main pollutants such as nitric oxides and the like in automobile exhaust in a pavement temperature range no matter whether sunlight exists or not, simultaneously effectively reducing the noise pollution of urban pavements, enhancing the pavement friction force, inhibiting the generation of water films and being widely applied to the construction of modern asphalt pavements and sponge cities.
Description
Technical Field
The invention relates to a high-viscosity asphalt material and a preparation method thereof, in particular to a high-viscosity asphalt material for purifying automobile exhaust and a preparation method thereof.
Background
With the development of the automobile industry, the automobile holding capacity is increased, the harm caused by automobile exhaust is more and more serious, certain damage is caused to the ecological environment balance and human health, and the automobile exhaust is one of the environmental pollution sources. The pollutants contained in the automobile exhaust mainly comprise CO generated by incomplete combustion of fuel, hydrocarbon which can cause photochemical smog, nitric oxide which is extremely harmful to human bodies, and SO2And fine particles (composed of heavy metal oxides such as soot and lead oxide). In addition, research in recent years shows that the emission of motor vehicle exhaust also causes NH in urban areas3Is used as the primary emission source. The ammonia in the tail gas of the motor vehicle has two aspects, namely, the combustion of fuel; and secondly, the tail gas catalytic device eliminates secondary products in the process of nitrogen oxide, and more ammonia is generated in the process than ammonia generated by fuel combustion. Therefore, the research on the prevention and treatment of the automobile exhaust pollution is very important and urgent.
The control of automobile tail gas pollution mainly includes two forms of pollution source control and external purification, in which the external purification mainly includes adding additive capable of purifying harmful gas in tail gas into asphalt mixture to reduce CO and NOx、NH3The content of (a).
With the rapid development of high-grade roads in China, people put forward higher requirements on the aspects of safety, comfort, environmental protection and the like of the roads, and the drainage road surface developed therewith can meet the requirements. The drainage pavement is also called porous asphalt pavement, and refers to open-graded wearing layer pavement with pavement porosity of more than 20% after compaction, and drainage channels can be formed in the mixture. Experience shows that polymer modified asphalt, particularly high-viscosity modified asphalt, must be used as a cementing material for a drainage pavement, so that the paved pavement can have sufficient strength, and the situations of compaction, deformation, even collapse and the like caused by high void ratio under the action of traffic load are avoided.
At present, China has conducted more researches on drainage pavements, wherein the main type of asphalt adopted is high-viscosity modified asphalt, the asphalt is usually obtained by quickly mixing high-viscosity asphalt additives, but the problem that the mixing is uneven is existed, and the tail gas pollutants on the pavement surface and entering into the pavement gap can not be converted, under the rainy day, the acid substances formed by the tail gas pollutants dissolved in water can continuously erode and erode the pavement surface and the inner structure of the asphalt mixture, so that the service life of the pavement and the performance of the pavement can be greatly reduced. The research on the active substances for purifying the exhaust gas of automobiles is mainly focused on TiO2The photocatalytic material can perform certain catalytic purification effect on the tail gas under the action of sunlight. But TiO 22Has the problems of poor absorption to the tail gas, only playing the role under the sunlight, and the like. The high-viscosity modified asphalt with the environmental protection function, which is developed by combining the two, has great application prospect in future social construction.
CN107880574A discloses an environment-friendly high-viscosity and high-elasticity composite modified asphalt and a preparation method thereof, wherein the environment-friendly purpose is to add zinc ricinoleate compounds and the like to remove special pungent taste caused by adding rubber powder, mainly remove sulfides, nitrides and the like. However, the effect generated by the inhibitor is not measured or represented otherwise, the function of degrading the automobile exhaust is not provided, the test data of the asphalt material on the viscosity aspect is less, the rotational viscosity is only 180 ℃, other index data are deficient, and whether the asphalt material can be used for actual road construction or not cannot be judged.
CN107189470A discloses a modified high-viscosity asphalt and a preparation method thereof, wherein a high-viscosity asphalt with better performance is obtained by adding a certain proportion of polymer synthetic resin as a toughness auxiliary agent. However, the added synthetic resin will greatly increase the cost of the highly viscous asphalt compared to the conventional highly viscous asphalt, and the good storage stability emphasized by it is not tested.
CN108929514A discloses a bio-based high-viscosity asphalt mixture modifier, which is applied to a bio-based filler prepared from papermaking black liquor and a high-viscosity modifier prepared from a thermoplastic elastomer, a processing oil auxiliary agent and the like, and can be used for modifying high-viscosity asphalt and also used for modifying a high-viscosity asphalt mixture. However, the bio-based filler disclosed in the patent needs a series of complex processing processes such as acid treatment, ball milling, drying, surface modification and the like, which inevitably increases process pollution and cost and is not easy to implement.
In summary, the asphalt material for purifying the automobile exhaust pollutants in the prior art can decompose the automobile exhaust pollutants on the road surface to a certain extent, but has the problems of poor exhaust adsorption, capability of playing a role only under sunlight and the like. Meanwhile, the high-viscosity asphalt pavement has a large void ratio, tail gas on the pavement surface is easy to remain in the void and has negative influence on people and vegetation close to the ground surface, the high-viscosity asphalt in the prior art has more added polymer types, and the negative influence of automobile tail gas on the pavement performance is basically not considered. At present, no document about a high-viscosity asphalt material with a function of purifying automobile exhaust gas is found.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-viscosity asphalt material for purifying automobile exhaust and a preparation method thereof. The high-viscosity asphalt material is mainly used for paving drainage asphalt pavements in sponge city construction so as to purify automobile exhaust pollutants on the pavements. The invention aims to improve the adsorption efficiency of the asphalt material on the automobile exhaust. On the other hand, the conversion efficiency and the acting time of the asphalt pavement on the automobile exhaust pollutants are improved.
The invention provides a high-viscosity asphalt material for purifying automobile exhaust, which comprises the following raw materials in parts by weight:
matrix asphalt: 100 parts of (A);
asphalt modifier: 1-20 parts, preferably 3-16 parts;
biomass heavy oil: 3-20 parts, preferably 5-15 parts;
thermoplastic block copolymer: 5-18 parts, preferably 6-12 parts;
a stabilizer: 0.1 to 1 part, preferably 0.2 to 0.7 part;
DOA: 1-5 parts, preferably 2-4 parts;
the asphalt modifier takes lanthanide metal oxide as a carrier and takes transition metal oxide as a catalytic active component; the amount of the transition metal is 5 to 100%, preferably 10 to 50%, and more preferably 15 to 40% of the amount of the lanthanide metal oxide.
The lanthanide metal in the lanthanide metal oxide is one or more of La, Ce, Sm and Yb.
The transition metal in the transition metal oxide is one or more of V, Mn, Fe, Co and Ni. Preferably, the transition metal in the transition metal oxide is Co and Mn, wherein the molar ratio of Co to Mn is 1: 1-1: 5.
Further, the base asphalt is selected from residual oil and/or asphalt obtained by atmospheric or vacuum distillation, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) is 55-130, and the base asphalt is preferably AH-50, AH-70, AH-90 asphalt or base asphalt meeting the technical requirements of JTG F40-2004 specification on 50A, 70A and 90A road petroleum asphalt.
Furthermore, the biomass heavy oil is a residue of the bio-oil with the temperature of more than 120 ℃ after the biomass raw material is subjected to pyrolysis and distillation treatment. The biomass raw material is preferably trees and felling process residues such as wood chips, leaves, twigs, etc.
Further, the thermoplastic block copolymer is styrene-butadiene block copolymer (SBS); the styrene-butadiene block copolymer (SBS) is a particle with a linear structure or a star-shaped structure, and the S/B ratio of the blocks is 20/80-40/60.
Further, the stabilizer is a simple substance, a compound or a mixture of sulfur-containing elements.
Further, the DOA is deoiled asphalt, the softening point of the deoiled asphalt is not lower than 90 ℃, and the PI value is more than 3.0. The DOA can be derived from heavy components which are obtained by solvent deasphalting of residual oil and contain no solvent, namely, the heavy components are recovered by the solvent, and the solvent used in the dissolving and removing process is selected from one or more than one of propane, isobutane, n-butane or n-pentane.
The second aspect of the invention also provides a preparation method of the high-viscosity asphalt material, which comprises the following steps:
(1) dispersing the lanthanide series metal oxide carrier in water, and uniformly stirring;
(2) adding transition metal salt into the slurry obtained in the step (1), and continuously and uniformly stirring;
(3) adding an alkali solution into the slurry obtained in the step (2), and adjusting the pH value to 7-12;
(4) continuously stirring the slurry obtained in the step (3), filtering and drying to obtain solid powder, and roasting to obtain an asphalt modifier;
(5) and (3) mixing, shearing and stirring the hot matrix asphalt, the thermoplastic block copolymer, the biomass heavy oil and the stabilizer, adding the asphalt modifier obtained in the step (4) and DOA into the mixture, and uniformly mixing to obtain the high-viscosity asphalt material.
Further, the solid-liquid volume ratio of the lanthanide metal oxide carrier to water in the step (1) is 1: 50-100.
Further, the transition metal salt in the step (2) is one or more of acetate, nitrate and sulfate of the transition metal.
Further, the alkali in the alkali solution in the step (3) is at least one selected from sodium carbonate, potassium carbonate and sodium hydroxide; the concentration of the alkali solution is 0.1-1 mol/L, preferably 0.2-0.5 mol/L; the pH value is preferably 9-10.
Further, stirring the solution in the step (4) for 3-5 hours; the drying temperature is 50-150 ℃, and preferably 80-100 ℃; roasting conditions are as follows: roasting the dried substance at 200-600 ℃ for 2-8 h, preferably selecting the conditions as follows: and roasting the dried substance at 200-500 ℃ for 3-5 h. Further, the step (4) may be washed after the filtration, and the washing may be performed by washing the solid matter with deionized water and ethanol.
Further, the temperature of the matrix asphalt in the step (5) is 150-190 ℃; further preferably, firstly, the heating temperature of the matrix asphalt and the biomass heavy oil is 160-170 ℃, the thermoplastic block copolymer and the stabilizer in corresponding proportion are added, after uniform stirring, the temperature is increased to 180-190 ℃, shearing and stirring are carried out until a uniform system is formed, then the DOA and the asphalt modifier are added, and uniform stirring is carried out.
Further, in the step (5), the shearing rotating speed of the matrix asphalt, the biomass heavy oil, the thermoplastic block copolymer and the stabilizer is 1000-5000 rpm, and the rotating speed of the mixture of the DOA and the asphalt modifier is 500-1000 rpm.
The third aspect of the invention provides an application of a high-viscosity asphalt material, wherein the high-viscosity asphalt material is applied to purifying gas pollutants on a graded anti-sliding wearing layer or a large-pore drainage pavement and can purify automobile exhaust under the conditions of no light or light and normal pavement temperature.
Compared with the prior art, the high-viscosity asphalt material and the preparation method thereof provided by the invention have the following advantages:
(1) the asphalt modifier adopted by the high-viscosity asphalt material is mainly used for purifying the automobile exhaust, namely, lanthanide series metal oxide is taken as a carrier, transition metal oxide is taken as a catalytic active component, and the lanthanide series metal oxide carrier and the transition metal oxide catalytic active component have stronger interaction by utilizing the synergistic action between lanthanide series metal and transition metal, so that the activity and the stability of the automobile exhaust purifying material can be greatly enhanced while the catalytic activity is effectively improved. In addition, strong synergistic effect exists between transition metals, and particularly, the transition metals Co and Mn are used simultaneously, so that the purifying and converting effect is remarkable. The asphalt modifier prepared by the invention can be used in the field of atmospheric environment treatment, can purify automobile exhaust under the conditions of no light, light and normal temperature, solves the problem that a common photocatalyst cannot play a role at night, and greatly improves the conversion efficiency and the acting duration of the road surface on the automobile exhaust.
(2) The high-viscosity asphalt material provided by the invention is prepared by adding a styrene-butadiene block copolymer, a stabilizer and biomass heavy oil into matrix asphalt, shearing, adding DOA and an asphalt modifier, and mixing and stirring. The high-viscosity asphalt material can be widely applied to bridge deck auxiliary layers, tunnel road surfaces, airport arrival surfaces and various grades of road surfaces, particularly paving drainage road surfaces in sponge city construction, not only ensures that the road performance of the asphalt material is not influenced, but also can effectively improve the adsorption and purification performance of the road surfaces to automobile exhaust. The high-viscosity asphalt material has strong adsorption capacity on automobile exhaust, and can obviously improve the adsorption efficiency and the conversion efficiency of pollutants by utilizing the matching effect of the modifier and the large porosity of the high-viscosity asphalt mixture. The high-viscosity asphalt material is uniformly dispersed in the high-viscosity asphalt material, has no segregation phenomenon and has good stability.
(3) The preparation method of the high-viscosity asphalt material provided by the invention is simple and easy to realize, the components in the asphalt material have good dispersibility in an asphalt phase, the DOA material with low cost can improve the high-temperature softening point of the asphalt and can also improve the dynamic viscosity of the asphalt by cooperating with the SBS polymer, the 60 ℃ viscosity of the obtained high-viscosity asphalt is far higher than the relevant standard requirement, the 135 ℃ viscosity is low, and the preparation method is beneficial to the mixing process of the mixture during construction.
Detailed Description
The following examples are provided to further illustrate the technical solutions of the present invention, but the present invention is not limited to the following examples.
Example 1
(1) Mixing 3g of Yb2O3Dispersing the carrier in 150 mL of deionized water, and stirring at the rotating speed of 200 rpm until the carrier is uniformly dispersed; 0.5g of Ni (NO) was added3)2Continuously stirring the solution for 1.5 h at the rotating speed of 200 rpm; 0.1 mol/L of K is added dropwise by using a separating funnel2CO3Adjusting the pH value of the solution to 8, and continuously stirring the solution for 3 hours at the rotating speed of 400 rpm; and (4) carrying out suction filtration, drying at 90 ℃ to obtain a solid matter, and roasting in a muffle furnace at 300 ℃ for 3h to obtain the asphalt modifier A1.
(2) 100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 71; 7 parts by weight of styrene-butadiene block copolymer, 0.3 part by weight of stabilizer and 6 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 20 min at the temperature of 160 ℃ and the rotating speed of 2000 rpm; after shearing, heating to 180 ℃, slowly adding 2 parts by weight of DOA and 4 parts by weight of the asphalt modifier in the step (1), and stirring for 3 hours at the rotation speed of 600 rpm to obtain an asphalt material B1.
Example 2
(1) Adding 3g of La2O3Dispersing the carrier in 250 mL of deionized water, and stirring at the rotating speed of 300 rpm until the carrier is uniformly dispersed; 4.8 g Co (NO) was added3)2Continuously stirring the solution for 2 hours at the rotating speed of 300 rpm; dropwise adding 0.1 mol/L KOH solution by using a separating funnel, adjusting the pH to 9, and continuously stirring for 3 hours at the rotating speed of 500 rpm; and (4) carrying out suction filtration, drying at 90 ℃ to obtain a solid matter, and roasting in a muffle furnace at 400 ℃ for 3h to obtain the asphalt modifier A2.
(2) 100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 61; 11 parts by weight of styrene-butadiene block copolymer, 0.6 part by weight of stabilizer and 14 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 30 min at the temperature of 170 ℃ at the rotating speed of 3000 rpm; after shearing, heating to 190 ℃, slowly adding 3 parts by weight of DOA and 5 parts by weight of the asphalt modifier in the step (1), and stirring for 4 hours at the rotation speed of 800 rpm to obtain an asphalt material B2.
Example 3
(1) 3g of CeO2Dispersing the carrier in 300 mL of deionized water, and stirring at the rotating speed of 400 rpm until the carrier is uniformly dispersed; 3.59gMn (CH) was added3COO)2Continuously stirring the solution for 3 hours at the rotating speed of 400 rpm; 0.1 mol/L Na was added dropwise using a separatory funnel2CO3Adjusting the pH value of the solution to 10, and continuously stirring the solution for 5 hours at the rotating speed of 500 rpm; and (4) carrying out suction filtration, drying at 90 ℃ to obtain a solid matter, and roasting in a muffle furnace at 400 ℃ for 5h to obtain the asphalt modifier A3.
(2) 100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 90; 9 parts by weight of styrene-butadiene block copolymer, 0.5 part by weight of stabilizer and 10 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 30 min at 165 ℃ at the rotating speed of 2000 rpm; after shearing, heating to 185 ℃, slowly adding 4 parts by weight of DOA and 13 parts by weight of the asphalt modifier in the step (1), and stirring for 5 hours at the rotating speed of 800 rpm to obtain an asphalt material B3.
Example 4
(1) 3g of CeO2Dispersing the carrier in 300 mL of deionized water, and stirring at the rotating speed of 400 rpm until the carrier is uniformly dispersed; adding 1.39g Co (NO)3)2And 1.42g Mn (CH)3COO)2Continuously stirring the solution for 3 hours at the rotating speed of 400 rpm; 0.1 mol/L Na was added dropwise using a separatory funnel2CO3Adjusting the pH value of the solution to 10, and continuously stirring the solution for 5 hours at the rotating speed of 500 rpm; and (4) carrying out suction filtration, drying at 90 ℃ to obtain a solid matter, and roasting in a muffle furnace at 400 ℃ for 5h to obtain the asphalt modifier A4.
(2) 100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 91; 9 parts by weight of styrene-butadiene block copolymer, 0.5 part by weight of stabilizer and 10 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 30 min at 165 ℃ at the rotating speed of 2000 rpm; after shearing, heating to 185 ℃, slowly adding 4 parts by weight of DOA and 13 parts by weight of the asphalt modifier in the step (1), and stirring for 5 hours at the rotating speed of 800 rpm to obtain an asphalt material B4.
Example 5
The procedure is as in example 4, except that 1.39g of Co (NO) is added as a transition metal salt3)2And 1.42g Mn (CH)3COO)2Changed to 3.61g Co (NO)3)2(ii) a The resulting asphalt modifier was designated A5 and the resulting asphalt material was designated B5.
Example 6
The procedure is as in example 4, except that 1.39g of Co (NO) is added as a transition metal salt3)2And 1.42g Mn (CH)3COO)2Changed to 2.29g Mn (CH)3COO)2(ii) a Obtaining the asphalt modifierThe asphalt material obtained was designated as A6 and B6.
Example 7
The procedure is as in example 2, except that the transition metal salt Co (NO) is used3)2The amount of addition of (2) was changed to 12.45 g. The resulting asphalt modifier was designated A7 and the resulting asphalt material was designated B7.
Comparative example 1
(1) An asphalt modifier A3 obtained in step (1) in example 3 was used.
(2) 100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 90; 9 parts by weight of styrene-butadiene block copolymer, 0.5 part by weight of stabilizer and 10 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 30 min at 165 ℃ at the rotating speed of 2000 rpm; after shearing, heating to 185 ℃, slowly adding 13 parts by weight of the asphalt modifier in the step (1), and stirring for 5 hours at the rotating speed of 800 rpm to obtain an asphalt material C1.
Comparative example 2
(1) An asphalt modifier A3 obtained in step (1) in example 3 was used.
(2) Shearing and stirring 100 parts by weight of asphalt with a penetration (25 ℃, 100g, 5s, 1/10 mm) of 90, 0.5 part by weight of stabilizer and 10 parts by weight of biomass heavy oil at 165 ℃ for 30 min at the rotating speed of 2000 rpm; after shearing, heating to 185 ℃, slowly adding 4 parts by weight of DOA and 13 parts by weight of the asphalt modifier in the step (1), and stirring for 5 hours at the rotating speed of 800 rpm to obtain an asphalt material C2.
Comparative example 3
100 parts by weight of asphalt, wherein the penetration (25 ℃, 100g, 5s, 1/10 mm) of the asphalt is 90; 9 parts by weight of styrene-butadiene block copolymer, 0.5 part by weight of stabilizer and 10 parts by weight of biomass heavy oil, and shearing and stirring the mixture for 30 min at 165 ℃ at the rotating speed of 2000 rpm; after shearing, heating to 185 ℃, slowly adding 4 parts by weight of DOA, and stirring for 5 hours at the rotation speed of 800 rpm to obtain the asphalt material C3.
Test example
The samples of the above examples and comparative examples areTesting the gas conversion rate of the main gas nitrogen oxide of the tail gas pollutant at the temperature of 60 ℃, wherein the gas flow rate of the tail gas pollutant is 500 mL/min, and the volume content of each component is 600 ppm NO and 400 ppm NO2，600 ppm NH3，12%O2500 ppm CO, the remainder being N2(ii) a The ability of the asphalt material to purify automobile exhaust was evaluated by passing exhaust gas pollution gas through a certain mass of each of the above-mentioned highly viscous asphalt material samples under the conditions of no light and detecting the change in the concentration of each gas in the exhaust gas, and the results obtained are shown in table 1 and the main properties of the highly viscous asphalt materials of examples 3 to 6 are shown in table 2.
TABLE 1 gas conversion of the main off-gas pollutants
| Bituminous material | B1 | B2 | B3 | B3 | B4 |
| Light conditions | Matt light | Matt light | Matt light | Has light | Matt light |
| NO conversion (%) | 65 | 72 | 87 | 88 | 92 |
| NO2Conversion (%) | 58 | 66 | 75 | 76 | 84 |
| CO conversion (%) | 47 | 61 | 64 | 68 | 72 |
TABLE 1 (continuation)
| Bituminous material | B5 | B6 | B7 | C1 | C2 | C3 |
| Light conditions | Matt light | Matt light | Matt light | Matt light | Matt light | Matt light |
| NO conversion (%) | 80 | 77 | 65 | 57 | 59 | 4 |
| NO2Conversion (%) | 71 | 70 | 59 | 50 | 51 | 2 |
| CO conversion (%) | 58 | 57 | 49 | 44 | 45 | 5 |
TABLE 2 main Properties of high-viscosity asphalt capable of purifying tail gas
| High-viscosity asphalt material | B3 | B4 | B5 | B6 | C1 | C2 | C3 | CJJ/T190- Require that |
| Penetration 25 deg.C/0.1 mm | 70 | 71 | 72 | 69 | 75 | 71 | 71 | ≥40 |
| Softening point/. degree.C | 93.6 | 92.8 | 92.5 | 93.9 | 91.0 | 82.9 | 93.0 | ≥80 |
| Ductility 15 ℃/cm | 90 | 91 | 94 | 89 | 102 | 120 | 91 | ≥80 |
| Dynamic viscosity at 60 ℃/("significant curve 104Pa·s) | 16.3 | 14.5 | 14.2 | 16.0 | 12.1 | 4.6 | 15.6 | ≥2.0 |
| Viscosity at 135 ℃ in Pa.s | 2.89 | 2.82 | 2.81 | 2.93 | 2.71 | 2.25 | 2.79 | — |
| Difference between upper and lower softening points/. degree.C | 1.1 | 1.0 | 1.5 | 2.0 | 1.8 | 1.2 | 1.0 | — |
| viscoelasticity/N.m | 29.1 | 28.3 | 26.5 | 27.5 | 25.5 | 27.1 | 28.1 | ≥20 |
| toughness/N.m | 22.0 | 25.1 | 23.1 | 26.2 | 22.3 | 21.9 | 21.8 | ≥15 |
As can be seen from table 1, the high-viscosity asphalt material of the present invention can effectively convert and purify harmful gases such as nitrogen oxides in the tail gas within the temperature range of the road surface, wherein, when the transition metal in the asphalt modifier is Co or Mn, the asphalt modifier exhibits good purification capability, and particularly, when Co and Mn are simultaneously selected, the conversion rate of the asphalt material to the tail gas pollutants nitrogen oxides and Co is greatly improved by utilizing the synergistic effect of the Co and Mn. In addition, experiments show that the DOA and the SBS have large influence on the viscosity and the high-temperature performance of the modified asphalt, and the DOA and the SBS need to be added into the asphalt at the same time to obtain higher viscosity improvement; under the light or no-light condition, the asphalt material has almost equivalent conversion efficiency to main nitrogen oxide pollutants, and shows that the asphalt material can continuously and efficiently purify the polluted gas of the pavement day and night when being used for the pavement. As can be seen from Table 2, the high-viscosity asphalt material of the invention has good properties, the prepared asphalt can meet the technical requirements on high-viscosity asphalt in CJJ/T190-2012, the viscosity at 60 ℃ can reach more than five times of the index requirement, and meanwhile, the viscosity at 135 ℃ is low, and the storage stability of the asphalt material is excellent; comparing the two asphalt materials B3 and C2, the addition of the asphalt modifier not only improves the adsorption performance and purification performance of the asphalt material on the tail gas, but also has no obvious negative effect on various properties of the high-viscosity asphalt, and important indexes of the high-viscosity asphalt, such as 15 ℃ ductility, 60 ℃ dynamic viscosity and the like, do not fluctuate greatly, which shows that the combination of the asphalt modifier and the high-viscosity asphalt produces positive and effective results.
In conclusion, the high-viscosity asphalt material for purifying the automobile exhaust and the preparation method thereof provided by the invention can effectively adsorb and convert the automobile exhaust in the temperature range of the road surface without illumination, the asphalt modifier and the high-viscosity asphalt are uniformly mixed, no obvious layering phenomenon exists, and the conversion rate of exhaust pollutant gas is high. The doped biomass heavy oil can replace partial matrix asphalt to improve the low-temperature performance, SBS and DOA can obviously improve the high-temperature performance and dynamic viscosity of the asphalt material, make up for the defect of poor track resistance of the biomass heavy oil, and the high-viscosity asphalt product obtained by composite modification has excellent comprehensive performance, simultaneously utilizes renewable resources, and is a high-viscosity asphalt material used for environment-friendly pavements.
Claims (16)
1. The high-viscosity asphalt material for purifying the automobile exhaust is characterized by comprising the following raw material components in parts by weight:
matrix asphalt: 100 parts of (A);
asphalt modifier: 1-20 parts, preferably 3-16 parts;
biomass heavy oil: 3-20 parts, preferably 5-15 parts;
thermoplastic block copolymer: 5-18 parts; preferably 6-12 parts;
a stabilizer: 0.1-1 part; preferably 0.2 to 0.7 part;
DOA: 1-5 parts, preferably 2-4 parts;
the asphalt modifier takes lanthanide series metal oxide as a carrier and takes transition metal oxide as a catalytic active component; the amount of the transition metal is 5 to 100%, preferably 10 to 50%, and more preferably 15 to 40% of the amount of the lanthanide metal oxide.
2. The high-viscosity asphalt material as claimed in claim 1, wherein the lanthanide metal in the lanthanide metal oxide is one or more of La, Ce, Sm and Yb; the transition metal in the transition metal oxide is one or more of V, Mn, Fe, Co and Ni.
3. The high-viscosity asphalt material as claimed in claim 2, wherein the transition metal in the transition metal oxide is Co and Mn, and the molar ratio of Co to Mn is 1: 1-1: 5.
4. The high-viscosity asphalt material as claimed in claim 1, wherein the penetration degree of the base asphalt is 55-1301/10 mm, preferably AH-50, AH-70, AH-90 asphalt or base asphalt meeting technical requirements of JTG F40-2004 specification for 50A, 70A, 90A road petroleum asphalt.
5. The high-viscosity asphalt material as claimed in claim 1, wherein the biomass heavy oil is a residue of bio-oil at a temperature of more than 120 ℃ after pyrolysis and distillation of biomass raw material.
6. The high-viscosity asphalt material according to claim 1, wherein the thermoplastic block copolymer is a styrene-butadiene block copolymer, the appearance of the thermoplastic block copolymer is particles with a linear structure or a star-shaped structure, and the S/B ratio is 20/80-40/60.
7. The high-viscosity asphalt material according to claim 1, wherein the stabilizer is a sulfur element-containing simple substance, a compound or a mixture thereof.
8. A high-viscosity bituminous material according to claim 1, characterized in that said DOA is characterized by a softening point not lower than 90 ℃ and a PI value > 3.0.
9. A method for preparing a high-viscosity asphalt material according to any one of claims 1 to 8, which comprises the following steps:
(1) dispersing the lanthanide series metal oxide carrier in water, and uniformly stirring;
(2) adding transition metal salt into the slurry obtained in the step (1), and continuously and uniformly stirring;
(3) adding an alkali solution into the slurry obtained in the step (2), and adjusting the pH value to 7-12;
(4) continuously stirring the slurry obtained in the step (3), filtering and drying to obtain solid powder, and roasting to obtain an asphalt modifier;
(5) and (3) mixing, shearing and stirring the hot matrix asphalt, the thermoplastic block copolymer, the biomass heavy oil and the stabilizer, adding the asphalt modifier obtained in the step (4) and DOA into the mixture, and uniformly mixing to obtain the high-viscosity asphalt material.
10. The production method according to claim 9, wherein the solid-liquid volume ratio of the lanthanide metal oxide support to water in step (1) is 1:50 to 100.
11. The preparation method according to claim 9, wherein the transition metal salt in the step (2) is one or more of acetate, nitrate and sulfate of the transition metal.
12. The preparation method according to claim 9, wherein the alkali in the alkali solution in the step (3) is at least one selected from sodium carbonate, potassium carbonate and sodium hydroxide; the concentration of the alkali solution is 0.1-1 mol/L, preferably 0.2-0.5 mol/L; the pH value is preferably 9-10.
13. The preparation method according to claim 9, wherein the solution in the step (4) is stirred for 3-5 hours; the drying temperature is 50-150 ℃, and preferably 80-100 ℃; roasting conditions are as follows: roasting the dried substance at 200-600 ℃ for 2-8 h, preferably selecting the conditions as follows: and roasting the dried substance at 200-500 ℃ for 3-5 h.
14. The method according to claim 9, wherein the temperature of the base asphalt in the step (5) is 150 to 190 ℃; further preferably, firstly, the heating temperature of the matrix asphalt and the biomass heavy oil is 160-170 ℃, the thermoplastic block copolymer and the stabilizer are added, after uniform stirring, the temperature is increased to 180-190 ℃, shearing and stirring are carried out until a uniform system is formed, then the DOA and the asphalt modifier are added, and uniform stirring is carried out, so that the high-viscosity asphalt material is obtained.
15. The method according to claim 9, wherein the shear rotation speed of the base asphalt, the biomass heavy oil, the thermoplastic block copolymer and the stabilizer in the step (5) is 1000 to 5000 rpm, and the mixing and stirring rotation speed with the DOA and the asphalt modifier is 500 to 1000 rpm.
16. The application of the high-viscosity asphalt material as recited in any one of claims 1 to 8, wherein the high-viscosity asphalt material is applied to purification of gas pollutants of a graded anti-skid wearing layer or a large-pore drainage pavement, and automobile exhaust is purified under the conditions of no light or light and normal temperature.
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| CN105038279A (en) * | 2015-09-07 | 2015-11-11 | 重庆市智翔铺道技术工程有限公司 | Modified asphalt and preparing method thereof |
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