CN116925441A - Anti-stripping and anti-aging agent, and preparation method and application thereof - Google Patents
Anti-stripping and anti-aging agent, and preparation method and application thereof Download PDFInfo
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- CN116925441A CN116925441A CN202210346978.8A CN202210346978A CN116925441A CN 116925441 A CN116925441 A CN 116925441A CN 202210346978 A CN202210346978 A CN 202210346978A CN 116925441 A CN116925441 A CN 116925441A
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- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000010426 asphalt Substances 0.000 claims abstract description 100
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 65
- -1 nitrogen-containing aromatic compound Chemical class 0.000 claims abstract description 34
- 230000032683 aging Effects 0.000 claims abstract description 33
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 20
- 239000007822 coupling agent Substances 0.000 claims abstract description 16
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 14
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 14
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 14
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000005210 alkyl ammonium group Chemical group 0.000 claims abstract description 10
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- BYLSIPUARIZAHZ-UHFFFAOYSA-N 2,4,6-tris(1-phenylethyl)phenol Chemical compound C=1C(C(C)C=2C=CC=CC=2)=C(O)C(C(C)C=2C=CC=CC=2)=CC=1C(C)C1=CC=CC=C1 BYLSIPUARIZAHZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 28
- 239000003208 petroleum Substances 0.000 claims description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 5
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 4
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 4
- 238000011161 development Methods 0.000 claims description 4
- 230000018109 developmental process Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- MVZWLBUGTZKZMN-UHFFFAOYSA-N pyrimidine-4,6-diamine;hydrochloride Chemical group Cl.NC1=CC(N)=NC=N1 MVZWLBUGTZKZMN-UHFFFAOYSA-N 0.000 claims description 4
- DYULYMCXVSRUPB-UHFFFAOYSA-N 1,4-bis(phenylmethoxy)benzene Chemical compound C=1C=CC=CC=1COC(C=C1)=CC=C1OCC1=CC=CC=C1 DYULYMCXVSRUPB-UHFFFAOYSA-N 0.000 claims description 3
- RJCJNXXYYTWFCM-UHFFFAOYSA-N 2,4-diaminopyrimidin-5-ol dihydrochloride Chemical compound Cl.Cl.Nc1ncc(O)c(N)n1 RJCJNXXYYTWFCM-UHFFFAOYSA-N 0.000 claims description 3
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 claims description 3
- VKJLYEDTHCTCOH-UHFFFAOYSA-N 3-(3-octadecoxy-3-oxopropyl)sulfanylpropanoic acid Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(O)=O VKJLYEDTHCTCOH-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 claims description 2
- IIVYOQGIZSPVFZ-UHFFFAOYSA-N 2,5-diamino-4-hydroxy-1h-pyrimidin-6-one;hydrochloride Chemical compound Cl.NC1=NC(O)=C(N)C(=O)N1 IIVYOQGIZSPVFZ-UHFFFAOYSA-N 0.000 claims description 2
- VHMLWEBEDKTKOQ-UHFFFAOYSA-N 5,6-diamino-1h-pyrimidine-2,4-dione;hydrochloride Chemical compound Cl.NC=1NC(=O)NC(=O)C=1N VHMLWEBEDKTKOQ-UHFFFAOYSA-N 0.000 claims description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003508 Dilauryl thiodipropionate Substances 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 2
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000003878 thermal aging Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 150000002989 phenols Chemical class 0.000 description 7
- 238000007664 blowing Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
Abstract
The invention discloses an anti-stripping and anti-aging agent, a preparation method and application thereof. The stripping-resistant and aging-resistant agent disclosed by the invention comprises the following raw materials: ethylene-vinyl acetate copolymer, styrene-butadiene rubber, polyethylene oxide, styrenated phenol, alkyl ammonium chloride, nitrogen-containing aromatic compound, methacrylate compound, coupling agent and antioxidant. The anti-stripping and anti-aging agent is granular, is used in airport asphalt, can obviously improve the adhesion strength of asphalt, improve the anti-stripping performance, improve the anti-thermal aging capability, and has stronger adaptability to the environment of aircraft height Wen Weiliu.
Description
Technical Field
The invention belongs to the fields of petroleum industry and basic material chemistry, and particularly relates to an anti-stripping and anti-aging agent and a preparation method thereof, which are particularly suitable for airfield runway asphalt.
Background
The highest temperature (at the nozzle) of the air flow sprayed by the modern jet plane engine can reach 850-900 ℃, the air flow speed can reach 180m/s, the air flow is diffused to the road surface in an elliptical shape, and the temperature is 150-200 ℃. Under the action of the high-temperature airflow, the temperature of the runway surface is rapidly increased, and the damage such as thermal ageing and stone falling of the asphalt runway surface is easily caused. The measured data show that when the temperature in summer is 40 ℃, the TY-104 aircraft is used for a blowing test, and the highest temperature of the asphalt runway surface can reach 141 ℃. When the pavement temperature is 102 ℃, the asphalt pavement is complete and good; when the temperature of the pavement is raised to 141 ℃, the asphalt pavement is ablated and softened by hot air flow at a plurality of positions in the experimental process, and the ablation area at each position is 3-5cm 2 . Similar tests are carried out by adopting a fighter 6 type aircraft, and the temperature of the road surface is measured to be 105-110 ℃ at the position 10-11.5 m away from the tail gas nozzle of the aircraft. Therefore, the end parts of the civil airport runways are provided with the anti-blowing placards. However, the high temperature air flow generated during the running of the aircraft still causes the temperature of the runway to rise suddenly, and damages the runway to further influence the durability of the runway. In particular, in winter, the temperature of the northern airport pavement is usually below zero, and the temperature of the runway pavement rises rapidly after the airplane slides, so that the runway material is in a high-frequency freeze-thawing cycle process. The process is extremely easy to generate coarse aggregate shedding diseases, and the damage of pavement materials is aggravated. Once the surface coarse aggregate is detached, a foreign invader (Foreign Object Debris, abbreviated as FOD) is formed. FOD, once ingested into an aircraft engine, can cause serious flight accidents. Therefore, the high-temperature stability and the coarse aggregate shedding resistance of the asphalt concrete material are improved, and the asphalt concrete material is an important research direction for improving the civil aviation operation safety. At present, polymer modified asphalt with better performance is widely adopted for paving airport asphalt runways worldwide, so that the problems of pavement deformation and threshing caused by high shear stress of wheels on runway surfaces in the processes of aircraft wake baking and aircraft landing can be solved. However, the practical effect is not ideal, and after a period of use, the pavement bulges, cracks and aggregate fall frequently, so that the potential safety hazard and the maintenance cost are increased. Therefore, there is an urgent need to develop an aging-resistant and anti-shedding asphalt material suitable for use on airport runways.
Disclosure of Invention
Aiming at the problem of aggregate stripping of an airport asphalt runway, the invention provides an anti-stripping and anti-aging agent which is particularly suitable for the airport asphalt runway, and a preparation method and application thereof. When the anti-stripping and anti-aging agent is used for an airport asphalt runway, the anti-stripping performance of asphalt can be obviously improved.
The invention provides an anti-stripping and anti-aging agent which comprises the following raw materials in parts by weight:
1 to 12 parts of ethylene-vinyl acetate copolymer, 2 to 17 parts of styrene-butadiene rubber, 1 to 7 parts of polyethylene oxide, 1 to 7 parts of styrenated phenol, 0.2 to 0.9 part of alkyl ammonium chloride, 2 to 7 parts of nitrogen-containing aromatic compound, 2 to 8 parts of methacrylate compound, 0.1 to 0.7 part of coupling agent and 0.1 to 0.7 part of antioxidant.
The anti-stripping and anti-aging agent disclosed by the invention preferably comprises the following raw materials in parts by weight:
2 to 11 parts of ethylene-vinyl acetate copolymer, 3 to 16 parts of styrene-butadiene rubber, 2 to 6 parts of polyethylene oxide, 2 to 6 parts of styrenated phenol, 0.3 to 0.8 part of alkyl ammonium chloride, 3 to 6 parts of nitrogen-containing aromatic compound, 3 to 7 parts of methacrylate compound, 0.2 to 0.6 part of coupling agent and 0.2 to 0.6 part of antioxidant.
The ethylene-vinyl acetate copolymer has a combined vinyl acetate mass content of 22wt% to 27wt%, preferably 23wt% to 26wt%.
The mass content of the combined styrene of the styrene-butadiene rubber is 26-43 wt%, preferably 27-42 wt%. The styrene-butadiene rubber preferably has a particle diameter of not more than 20mm, generally 5 to 20mm.
The molecular weight of the polyethylene oxide is 15 to 450 ten thousand, preferably 16 to 430 ten thousand.
The styrenated phenol is one or a mixture of a plurality of monostyrenated phenol, bisstyrenated phenol and trisstyrenated phenol.
The alkyl ammonium chloride is selected from one or two of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride.
The nitrogen-containing aromatic compound is at least one selected from pyridine quaternary ammonium salt and diaminopyrimidine hydrochloride.
Further, the pyridine quaternary ammonium salt is at least one selected from N-benzoyl methyl pyridine quaternary ammonium salt, O- (7-aza-benzotriazole-1-yl) -N, N, N ', N' -tetramethyl urea tetrafluoroborate quaternary ammonium salt, N-cyanomethyl pyridine quaternary ammonium salt chloride, N- (2-acetyl pyridine) pyridine quaternary ammonium salt, N-ethyl acetate pyridine quaternary ammonium salt, N-nitrile methyl pyridine quaternary ammonium salt, N-acetic acid pyridine quaternary ammonium salt, 2-mercapto pyridine quaternary ammonium salt, N- (2-methylpropenyl) methyl pyridine quaternary ammonium salt, bromo N-benzoyl methyl pyridine quaternary ammonium salt; the diamino pyrimidine hydrochloride is at least one selected from 2, 5-diamino-4, 6-dihydroxypyrimidine hydrochloride, 4, 5-diamino-2, 6-dihydroxypyrimidine hydrochloride and 2, 4-diamino-pyrimidin-5-ol dihydrochloride.
The methacrylate compound is selected from any one or a mixture of a plurality of 2-hydroxyethyl methacrylate, 2-ethylhexyl methacrylate and ethyl methacrylate.
The coupling agent is one or more selected from silane coupling agent, aluminate coupling agent and titanate coupling agent.
The antioxidant is one or more selected from 2, 6-di-tert-butyl-p-cresol, hydroquinone dibenzyl ether, dilauryl thiodipropionate, trisnonylphenyl phosphite, stearyl thiodipropionate and poly (2, 4-trimethyl-1, 2-dihydroxybenzene).
The anti-stripping and anti-aging agent is granular, and the grain diameter is about 2-5 mm.
The second aspect of the invention provides a preparation method of the anti-stripping and anti-aging agent, which comprises the following steps:
the anti-stripping and anti-aging agent is prepared by uniformly mixing ethylene-vinyl acetate copolymer, styrene butadiene rubber, polyethylene oxide, styrenated phenol, alkyl ammonium chloride, a nitrogenous aromatic compound, a methacrylate compound, a coupling agent and an antioxidant, and then carrying out mixing and granulation.
The mixing is effected by conventional mixing devices, such as kneaders.
Further, the kneading conditions were as follows: the mixing temperature is 165-185 ℃ and the mixing time is 45-85 min.
The granulation is achieved using conventional extrusion granulation equipment, such as a screw extruder. The extrusion granulation conditions were as follows: the extrusion granulating temperature is 165-185 ℃.
Further, the anti-stripping and anti-aging agent prepared by the method provided by the second aspect is granular, and the granularity is about 2-5 mm.
In a third aspect, the present invention provides a stripping-resistant and aging-resistant asphalt, comprising: petroleum asphalt and the anti-stripping and anti-aging agent.
In the anti-stripping and anti-aging asphalt, the dosage of the anti-stripping and anti-aging agent accounts for 2-3% of the mass of the anti-stripping and anti-aging asphalt.
Further, in the anti-stripping and anti-aging asphalt, the petroleum asphalt may be at least one of conventional petroleum asphalt for airport runway, such as straight asphalt, oxidized asphalt, blended asphalt, solvent deasphalted asphalt, and polymer modified asphalt.
The fourth aspect of the invention provides a preparation method of the stripping-resistant and aging-resistant asphalt, which comprises the following steps: heating and melting petroleum asphalt, adding the anti-stripping and anti-aging agent, uniformly mixing, and developing to obtain the anti-stripping and anti-aging asphalt.
Further, in the preparation method of the anti-stripping and anti-aging asphalt, the asphalt has the heating and melting temperature of 165-185 ℃, the mixing temperature of 165-185 ℃ and the mixing time of 45-85 min. The development temperature is 165-185 ℃ and the development time is 5-9 hours.
The stripping-resistant and aging-resistant agent is particularly suitable for application in airfield runway asphalt.
The stripping-resistant aging-resistant asphalt provided by the invention is suitable for being used as airfield runway asphalt.
The invention has the following beneficial effects:
1. the anti-stripping aging resistant agent not only can remarkably improve the anti-stripping performance of asphalt, but also has strong adaptability to the high Wen Weiliu environment of an airplane, can improve the anti-stripping performance and the heat aging resistance of an airport asphalt runway, reduces the stripping of aggregate, delays the aging process of asphalt, and prolongs the service life of the runway surface.
2. The anti-stripping and anti-aging agent is granular, and is convenient to transport and store.
3. In the preparation method of the anti-stripping and anti-aging agent, the coupling agent and the nitrogen-containing aromatic compound are used as the initiator, the ethylene-vinyl acetate copolymer, the styrene-butadiene rubber, the polyethylene oxide, the styrenated phenol, the alkyl ammonium chloride, the methacrylate compound and the antioxidant are fused in a kneader and in the screw extrusion process, and all the components are matched with each other, so that a synergistic effect can be achieved, and the formed product has higher viscosity and flexibility, has good polarity and ageing resistance, so that the anti-stripping and anti-aging agent can enable asphalt to have good high-temperature stripping resistance and heat ageing resistance under a high-temperature environment, and can adapt to blowing of an aircraft high Wen Wei airflow to a runway surface, and stone stripping and asphalt ageing are reduced.
Detailed Description
The following examples are given to illustrate the technical aspects of the present invention in detail, but the present invention is not limited to the following examples. In the invention, the weight percent is the mass fraction.
In the invention, the simulation experiment method of the aircraft height Wen Weiliu comprises the following steps: with aircraft engines (such as newer engines), the tail links a straight barrel of high temperature resistant material with heating. During the experiment, put into metal tray after melting the pitch that waits to test, the flat spreading is the film form, and film thickness is 3mm + -0.3 mm. The tray with the asphalt film is arranged at the bottom in the cylinder body and is firmly fixed. The bottom of the cylinder body has a heating function, so that the temperature of asphalt in the tray is maintained at 60+/-20 ℃ (the temperature of Wen Shilu table in summer simulation). The engine is started, so that high-temperature tail gas of the engine enters from one end of the straight cylinder, the other end of the straight cylinder is discharged, the high-temperature tail gas is blown over the asphalt membrane, the blowing is continued for 30 minutes, and the blowing is stopped for 10 minutes, so that the process is continuously repeated for a plurality of times. One experimental period was 240 hours from the initial start of blowing. And then taking out the asphalt, analyzing each performance, and comparing the performance with the performance before the simulation experiment. The method simulates the condition of asphalt on an airport runway (especially in a take-off section) when the asphalt is purged by high-temperature tail gas of an airplane for a long time, and examines the change of asphalt properties, especially the change of stripping resistance.
In the invention, the asphalt adhesion strength is obtained by testing with a drawing tester. The instrument and the test method are as follows:
instrument and equipment: drawing tester with model PosiTest AT-A, tester parameters: a draw rate of 150psi/s; test range 0-2000psi; the test method is as follows:
weighing asphalt with the mass of 0.03g on the experimental surface of the spindle; placing the spindle with asphalt on an electric heating plate, after asphalt is melted, uniformly smearing the asphalt within 10 seconds, simultaneously rapidly transferring the preheated white steel plate to a horizontal operation table, buckling the spindle coated with the uniform asphalt on the white steel plate, standing and cooling to room temperature (about 1 h). The liquid asphalt spreads evenly under the action of spindle gravity, and after cooling, the spindle and the white steel plate are bonded, and the thickness of the asphalt film is about 0.1mm. The white steel plate cooled to room temperature and the spindle were put in an environmental box (temperature: 20 ℃ C.; relative humidity: 50 Rh%) and kept AT constant temperature for 1 hour, and then taken out, and the adhesion was measured using a Positest AT-A tester. The drawing strength value at the time of separating the spindle from the metal plate was recorded. The value is used for representing the stripping resistance of asphalt, and the greater the value is, the better the stripping resistance is.
Example 1
Styrene-butadiene rubber with 27 weight percent of combined styrene content is crushed in advance, and the particle size is 6-14 mm for standby. The kneader is heated for use.
Weighing 20.0kg of ethylene-vinyl acetate copolymer with the mass content of 23wt% of combined vinyl acetate, 30.0kg of crushed styrene-butadiene rubber, 20.0kg of polyethylene oxide with the molecular weight of 16 ten thousand, 20.0kg of monostyrenated phenol, 3.0kg of cetyltrimethylammonium chloride, 30.0kg of O- (7-azabenzotriazole-1-yl) -N, N, N ', N' -tetramethylurea tetrafluoroborate quaternary ammonium salt, 30.0kg of 2-ethylhexyl methacrylate, 2.0kg of aluminate coupling agent and 2.0kg of hydroquinone dibenzyl ether, and putting into a kneader for mixing at the mixing temperature of 166 ℃ for 46min; then extruding and granulating, wherein the extrusion temperature is 166 ℃. Cutting into granules with granularity of 2mm to obtain the anti-stripping and anti-aging agent. The raw material dosage for preparing the stripping-resistant and aging-resistant agent is shown in table 1.
Example 2
Styrene-butadiene rubber with the styrene content of 42wt% is crushed in advance, and the particle size is 9-18 mm for standby. The kneader is heated for use.
110.0kg of ethylene-vinyl acetate copolymer with the mass content of 26wt% of combined vinyl acetate, 160.0kg of crushed styrene-butadiene rubber, 60.0kg of polyethylene oxide with the molecular weight of 430 ten thousand, 60.0kg of bisstyrenated phenol, 8.0kg of octadecyl trimethyl ammonium chloride, 60.0kg of 2, 4-diaminopyrimidine-5-ol dihydrochloride, 70.0kg of ethyl methacrylate, 6.0kg of titanate coupling agent and 6.0kg of poly (2, 4-trimethyl-1, 2-dihydroquinone) are weighed and placed into a kneader for mixing, wherein the mixing temperature is 184 ℃, and the mixing time is 84 minutes; then extruding and granulating, wherein the extrusion temperature is 184 ℃. Cutting into particles with the granularity of 3mm to obtain the anti-stripping and anti-aging agent. The raw material dosage for preparing the stripping-resistant and aging-resistant agent is shown in table 1.
Example 3
Styrene-butadiene rubber with the combined styrene content of 30wt% is crushed in advance, and the particle size is 6-10 mm for standby. The kneader is heated for use.
65.0kg of ethylene-vinyl acetate copolymer with the mass content of 25wt% of combined vinyl acetate, 95.0kg of crushed styrene-butadiene rubber, 40.0kg of polyethylene oxide with the molecular weight of 210 ten thousand, 40.0kg of tristyrenated phenol, 5.5kg of octadecyl trimethyl ammonium chloride, 45.0kg of bromoN-benzoyl methyl pyridine quaternary ammonium salt, 50.0kg of 2-hydroxyethyl methacrylate, 4.0kg of silane coupling agent and 4.0kg of stearyl thiodipropionate are weighed and placed into a kneader for mixing, wherein the mixing temperature is 175 ℃ and the mixing time is 65min; then extruding and granulating, wherein the extrusion temperature is 175 ℃. Cutting into granules with granularity of 4mm to obtain the anti-stripping and anti-aging agent. The raw material dosage for preparing the stripping-resistant and aging-resistant agent is shown in table 1.
Example 4
Styrene-butadiene rubber with the combined styrene content of 29 weight percent is crushed in advance, and the particle size is 7-13 mm for standby. The kneader is heated for use.
50.0kg of ethylene-vinyl acetate copolymer with the mass content of 24wt% of combined vinyl acetate, 50.0kg of crushed styrene-butadiene rubber, 50.0kg of polyethylene oxide with the molecular weight of 300 ten thousand, 50.0kg of bisstyrenated phenol, 5.0kg of cetyltrimethylammonium chloride, 50.0kg of N-nitrile methyl pyridine quaternary ammonium salt, 40.0kg of 2-hydroxyethyl methacrylate, 3.0kg of silane coupling agent and 3.0kg of trisnonylphenyl phosphite are weighed and placed into a kneader for mixing, wherein the mixing temperature is 170 ℃, and the mixing time is 55min; then extruding and granulating, wherein the extrusion temperature is 170 ℃. Cutting into granules with granularity of 4mm to obtain the anti-stripping and anti-aging agent. The raw material dosage for preparing the stripping-resistant and aging-resistant agent is shown in table 1.
Example 5
The anti-peeling and anti-aging agent obtained in example 1 was added to 166℃molten petroleum asphalt (Zhenhai 70A) having a penetration of 79dmm at 25℃produced by Zhenhai petrochemical Co., ltd: the weight ratio of the stripping-resistant and aging-resistant agent is 97:3. stirring at the constant temperature of 166 ℃ for 46min, and then developing at the constant temperature of 166 ℃ for 5.1 hours to obtain the anti-stripping and anti-aging asphalt.
The adhesion strength of the anti-stripping and anti-aging asphalt was measured by a tensile tester, and the results are shown in Table 2. The asphalt was subjected to a simulation experiment in an aircraft high Wen Weiliu environment, and after one period of experiment, a drawing experiment was performed, and the results are shown in table 2.
Example 6
The anti-peel and anti-aging agent obtained in example 2 was added to 184℃molten petroleum asphalt (Zhenhai 70A) produced by Zhenhai petrochemical Co., ltd and having a penetration at 25℃of 79 dmm: the weight ratio of the stripping-resistant and aging-resistant agent is 97.5:2.5. stirring at constant temperature of 184 ℃ for 84min, and developing at 184 ℃ for 8.8 hours to obtain the anti-stripping and anti-aging asphalt.
The adhesion strength of the anti-stripping and anti-aging asphalt was measured by a tensile tester, and the results are shown in Table 2. The asphalt was subjected to a simulation experiment in an aircraft high Wen Weiliu environment, and after one period of experiment, a drawing experiment was performed, and the results are shown in table 2.
Example 7
The anti-peel and anti-aging agent obtained in example 3 was added to 175℃molten petroleum asphalt (Zhenhai 70A) produced by Zhenhai petrochemical Co., ltd and having a penetration of 79dmm at 25 ℃): the weight ratio of the stripping-resistant and aging-resistant agent is 98:2. stirring at a constant temperature of 175 ℃ for 65min, and then developing at a constant temperature of 175 ℃ for 7 hours to obtain the anti-stripping and anti-aging asphalt.
The adhesion strength of the anti-stripping and anti-aging asphalt was measured by a tensile tester, and the results are shown in Table 2. The asphalt was subjected to a simulation experiment in an aircraft high Wen Weiliu environment, and after one period of experiment, a drawing experiment was performed, and the results are shown in table 2.
Example 8
The anti-peeling and anti-aging agent obtained in example 4 was added to 170℃molten petroleum asphalt (Zhenhai 70A) having a penetration of 79dmm at 25℃produced by Zhenhai petrochemical Co., ltd: the weight ratio of the stripping-resistant and aging-resistant agent is 97:3. stirring at a constant temperature of 170 ℃ for 55min, and then developing at 170 ℃ for 6 hours to obtain the anti-stripping and anti-aging asphalt.
The adhesion strength of the anti-stripping and anti-aging asphalt was measured by a tensile tester, and the results are shown in Table 2. The anti-stripping anti-aging asphalt is subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and a drawing experiment is performed after one period of experiment, and the results are shown in Table 2.
Comparative example 1
For comparison, the adhesion strength of a drawing tester for asphalt (land 70A) produced by land petrochemicals and having a penetration of 79dmm at 25℃is also shown in Table 2; and the simulation experiment under the environment of the aircraft height Wen Weiliu was also carried out on the land 70A produced by land petrochemical company, and the drawing experiment was carried out after one period of experiment, and the results are shown in Table 2.
Comparative example 2
For comparison, a commercial anti-stripping agent JW-AS1 produced by Shenzhen Jia Cheng Wei was added to 184℃molten petroleum asphalt (Zhenhai 70A) produced by Zhenhai petrochemical Co., ltd., having a penetration of 79dmm at 25 ℃): the weight ratio of the stripping resistant agent is 97.5:2.5. stirring at constant temperature of 184 ℃ for 84min, and developing at 184 ℃ for 8.8 hours to obtain the anti-stripping asphalt.
The asphalt was tested for adhesion strength by a pull tester, and the results are shown in table 2. The asphalt was subjected to a simulation experiment in an aircraft high Wen Weiliu environment, and after one period of experiment, a drawing experiment was performed, and the results are shown in table 2.
Table 1 raw material dosage for preparing anti-peeling and anti-aging agent
Table 2 asphalt drawing test results
| Adhesion strength/psi | Example 5 | Example 6 | Example 7 | Example 8 | Comparative example 1 | Comparative example 2 |
| No simulation experiments were performed | 562 | 584 | 622 | 593 | 369 | 448 |
| After simulation experiment | 613 | 636 | 666 | 648 | 300 | 459 |
As can be seen from table 2, the addition of the anti-stripping and anti-aging agent of the invention to asphalt can significantly improve the adhesion strength and anti-stripping performance of asphalt; after one period of aircraft height Wen Weiliu simulation experiment, the adhesion strength of the asphalt added with the anti-stripping and anti-aging agent is not reduced, but is increased, so that the anti-stripping and anti-aging agent not only can improve the anti-stripping performance of the asphalt, but also has the heat aging resistance, and has strong adaptability to the aircraft height Wen Weiliu environment. Asphalt without the anti-stripping and anti-aging agent has obviously reduced adhesion strength after simulation experiments; after a certain commercial stripping-resistant aging-resistant agent is added, compared with the stripping-resistant aging-resistant agent provided by the invention, the improvement range of the adhesive strength is smaller, and after a simulation experiment, the adhesive strength is not reduced, but the improvement range is smaller.
Claims (20)
1. The anti-stripping and anti-aging agent comprises the following raw materials in parts by weight: 1 to 12 parts of ethylene-vinyl acetate copolymer, 2 to 17 parts of styrene-butadiene rubber, 1 to 7 parts of polyethylene oxide, 1 to 7 parts of styrenated phenol, 0.2 to 0.9 part of alkyl ammonium chloride, 2 to 7 parts of nitrogen-containing aromatic compound, 2 to 8 parts of methacrylate compound, 0.1 to 0.7 part of coupling agent and 0.1 to 0.7 part of antioxidant.
2. The anti-stripping and anti-aging agent according to claim 1, which is characterized by comprising the following raw materials in parts by mass: 2 to 11 parts of ethylene-vinyl acetate copolymer, 3 to 16 parts of styrene-butadiene rubber, 2 to 6 parts of polyethylene oxide, 2 to 6 parts of styrenated phenol, 0.3 to 0.8 part of alkyl ammonium chloride, 3 to 6 parts of nitrogen-containing aromatic compound, 3 to 7 parts of methacrylate compound, 0.2 to 0.6 part of coupling agent and 0.2 to 0.6 part of antioxidant.
3. The peeling and aging resistant agent according to claim 1 or 2, wherein the ethylene-vinyl acetate copolymer has a combined vinyl acetate mass content of 22 to 27wt%.
4. The peeling and aging resistant agent according to claim 1 or 2, wherein the mass content of the bound styrene in the styrene-butadiene rubber is 26 to 43wt%; preferably, the styrene-butadiene rubber has a particle size of not more than 20mm.
5. The peeling and aging resistant agent according to claim 1 or 2, wherein the polyethylene oxide has a molecular weight of 15 to 450 tens of thousands, preferably 16 to 430 tens of thousands.
6. The peeling and aging resistant agent according to claim 1 or 2, wherein the alkyl ammonium chloride is one or a mixture of two of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride.
7. The peeling and aging resistant agent according to claim 1 or 2, wherein the nitrogen-containing aromatic compound is at least one selected from the group consisting of a quaternary pyridine salt and a diaminopyrimidine hydrochloride.
8. The peeling-resistant and aging-resistant agent according to claim 7, wherein: the pyridine quaternary ammonium salt is at least one selected from N-benzoyl methyl pyridine quaternary ammonium salt, O- (7-aza-benzotriazole-1-yl) -N, N, N ', N' -tetramethyl urea tetrafluoroboric acid quaternary ammonium salt, N-cyanomethyl pyridine quaternary ammonium salt, N- (2-acetyl pyridine) pyridine quaternary ammonium salt, N-ethyl acetate pyridine quaternary ammonium salt, N-nitrile methyl pyridine quaternary ammonium salt, N-acetic acid pyridine quaternary ammonium salt, 2-mercapto pyridine quaternary ammonium salt, N- (2-methylpropenyl) methyl pyridine quaternary ammonium salt and bromo N-benzoyl methyl pyridine quaternary ammonium salt; the diamino pyrimidine hydrochloride is at least one selected from 2, 5-diamino-4, 6-dihydroxypyrimidine hydrochloride, 4, 5-diamino-2, 6-dihydroxypyrimidine hydrochloride and 2, 4-diamino-pyrimidin-5-ol dihydrochloride.
9. The peeling-resistant and aging-resistant agent according to claim 1 or 2, characterized in that: the methacrylate compound is selected from any one or a mixture of a plurality of 2-hydroxyethyl methacrylate, 2-ethylhexyl methacrylate and ethyl methacrylate.
10. The peeling and aging resistant agent according to claim 1 or 2, wherein the coupling agent is one or more selected from the group consisting of a silane coupling agent, an aluminate coupling agent, and a titanate coupling agent.
11. The anti-peeling and anti-aging agent according to claim 1 or 2, wherein the antioxidant is one or more selected from the group consisting of 2, 6-di-t-butyl-p-cresol, hydroquinone dibenzyl ether, dilauryl thiodipropionate, trisnonylphenyl phosphite, stearyl thiodipropionate and poly (2, 4-trimethyl-1, 2-dihydroquinone).
12. The anti-stripping and anti-aging agent according to claim 1 or 2, wherein the asphalt anti-stripping and anti-aging agent is in the form of particles with the particle size of 2-5 mm.
13. A process for preparing the anti-peeling and anti-aging agent according to any one of claims 1 to 12, comprising:
the anti-stripping and anti-aging agent is prepared by uniformly mixing ethylene-vinyl acetate copolymer, styrene butadiene rubber, polyethylene oxide, styrenated phenol, alkyl ammonium chloride, a nitrogenous aromatic compound, a methacrylate compound, a coupling agent and an antioxidant, and then carrying out mixing and granulation.
14. The method of claim 13, wherein the mixing conditions are as follows: the mixing temperature is 165-185 ℃ and the mixing time is 45-85 min;
and/or, the granulation adopts extrusion granulation, and the temperature of extrusion granulation is 165-185 ℃.
15. An anti-peel and anti-aging asphalt comprising: petroleum asphalt and the peel and aging resistant agent of any one of claims 1 to 12.
16. The anti-stripping and anti-aging asphalt according to claim 15, wherein the amount of the anti-stripping and anti-aging agent in the anti-stripping and anti-aging asphalt is 2-3% of the mass of the anti-stripping and anti-aging asphalt.
17. The anti-stripping and anti-aging asphalt according to claim 15, wherein the petroleum asphalt is at least one of straight asphalt, oxidized asphalt, blended asphalt, solvent-removed asphalt, and polymer-modified asphalt.
18. A method for preparing the anti-stripping and anti-aging asphalt according to any one of claims 15 to 17, comprising: heating and melting petroleum asphalt, adding the anti-stripping and anti-aging agent, uniformly mixing, and developing to obtain the anti-stripping and anti-aging asphalt.
19. The method according to claim 18, wherein the petroleum asphalt has a heating and melting temperature of 165 ℃ to 185 ℃, a mixing temperature of 165 ℃ to 185 ℃ and a mixing time of 45 min to 85min; the development temperature is 165-185 ℃ and the development time is 5-9 hours.
20. Use of the anti-peel and anti-aging agent according to any one of claims 1 to 12 or the anti-peel and anti-aging asphalt according to any one of claims 15 to 17 in airport runways.
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