CN116496633B - Ultraviolet-resistant asphalt material and preparation method thereof - Google Patents
Ultraviolet-resistant asphalt material and preparation method thereof Download PDFInfo
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- CN116496633B CN116496633B CN202310593161.5A CN202310593161A CN116496633B CN 116496633 B CN116496633 B CN 116496633B CN 202310593161 A CN202310593161 A CN 202310593161A CN 116496633 B CN116496633 B CN 116496633B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 229920001971 elastomer Polymers 0.000 claims abstract description 43
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 30
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- 239000003607 modifier Substances 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000002250 absorbent Substances 0.000 claims abstract description 6
- 230000002745 absorbent Effects 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 63
- 238000010438 heat treatment Methods 0.000 claims description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- 239000000376 reactant Substances 0.000 claims description 42
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000010008 shearing Methods 0.000 claims description 35
- 239000008367 deionised water Substances 0.000 claims description 27
- 229910021641 deionized water Inorganic materials 0.000 claims description 27
- 239000007864 aqueous solution Substances 0.000 claims description 25
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 21
- 239000000178 monomer Substances 0.000 claims description 20
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 18
- 235000010288 sodium nitrite Nutrition 0.000 claims description 18
- 239000012954 diazonium Substances 0.000 claims description 17
- 150000001989 diazonium salts Chemical class 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000543 intermediate Substances 0.000 claims description 14
- GVPODVKBTHCGFU-UHFFFAOYSA-N 2,4,6-tribromoaniline Chemical compound NC1=C(Br)C=C(Br)C=C1Br GVPODVKBTHCGFU-UHFFFAOYSA-N 0.000 claims description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 12
- 239000003999 initiator Substances 0.000 claims description 12
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 claims description 10
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 10
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 10
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 10
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims description 10
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 10
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 10
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 9
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 9
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 239000003729 cation exchange resin Substances 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 7
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 7
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical compound C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 6
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 239000012065 filter cake Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 239000005457 ice water Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 235000010265 sodium sulphite Nutrition 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- 150000002829 nitrogen Chemical class 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 8
- 230000006750 UV protection Effects 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 12
- 239000003921 oil Substances 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000005543 nano-size silicon particle Substances 0.000 description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000002390 rotary evaporation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000006193 diazotization reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- RTTKVNNZRGYCTK-UHFFFAOYSA-N CC=1C=C(O)N(C)C(=O)C=1C#N Chemical compound CC=1C=C(O)N(C)C(=O)C=1C#N RTTKVNNZRGYCTK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to the technical field of asphalt preparation, in particular to an ultraviolet-resistant asphalt material and a preparation method thereof, wherein an asphalt base material comprises the following components in parts by weight: 10-20 parts of modified acrylic resin, 95-100 parts of matrix asphalt, 1-4 parts of SBS modifier, 1-1.5 parts of graphene, 15-25 parts of desulfurized rubber powder, 1-3 parts of ultraviolet absorbent, 3-5 parts of warm mix agent, 1-2 parts of antioxidant and 2-2.05 parts of light shielding agent. According to the invention, the SBS modifier, the modified acrylic resin, the graphene and the desulfurization rubber powder are used for acting on the matrix asphalt in a synergistic manner, and the ultraviolet absorbent, the warm mix agent, the antioxidant and the light shielding agent are added to prepare the ultraviolet-resistant asphalt material. The asphalt material prepared by the invention has excellent ultraviolet resistance and ageing resistance, and simultaneously has high-temperature stability, thereby prolonging the service life of the pavement.
Description
Technical Field
The invention relates to the technical field of asphalt preparation, in particular to an ultraviolet-resistant asphalt material and a preparation method thereof.
Background
With the acceleration of the urban process, road construction and maintenance work is also becoming more and more important. Asphalt is a commonly used material for pavement paving and repairing in road construction and maintenance. The asphalt pavement has strong durability, can bear the use of vehicles and pedestrians for a long time, has good damping performance, can reduce the bumpy feel of the vehicles and pedestrians in running, and has relatively low maintenance cost and relatively long maintenance period compared with other pavement materials. However, asphalt can age under long-term ultraviolet irradiation, which causes problems such as cracking, crazing and deformation of the pavement, and affects the service life and safety of the road. Therefore, research and development of the ultraviolet-resistant asphalt has important significance. The ultraviolet-resistant asphalt can effectively resist ultraviolet irradiation, prolong the service life of a pavement, reduce maintenance cost and improve the safety and comfort of the pavement.
At present, the ultraviolet resistance of the ultraviolet resistant asphalt is still limited, the service life of the asphalt is still short, and the asphalt needs to be replaced frequently, so that the maintenance cost is increased. The common anti-ultraviolet asphalt is mainly realized by adding various auxiliary agents or improving the asphalt formulation. However, in general, the auxiliary agent has poor stability and is easily affected by external environment to fail, which increases the cost of asphalt.
Therefore, we propose an anti-ultraviolet asphalt material and a preparation method thereof.
Disclosure of Invention
The invention aims to provide an anti-ultraviolet asphalt material and a preparation method thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a preparation method of an anti-ultraviolet asphalt material is characterized by comprising the following steps: the method comprises the following steps:
s1: heating the modified acrylic resin to 55-65 ℃, and preserving heat for later use;
s2, heating matrix asphalt to 130-150 ℃, adding SBS modifier, heating to 170-180 ℃, shearing for 2-3 hours at a shearing rate of 5000-6000rad/min, adding modified acrylic resin, desulfurized rubber powder and graphene, shearing for 40-60 minutes at a shearing rate of 5000-6000rad/min, and maintaining the temperature of 175-185 ℃ and stirring for 2-3 hours to prepare modified asphalt;
s3, maintaining the temperature of the modified asphalt at 170-180 ℃, adding an ultraviolet absorber, a warm mixing agent, an antioxidant and a light shielding agent, shearing for 40-50min at a shearing rate of 5000-6000rad/min, and preserving the temperature at 150-170 ℃ for 30-60min after shearing to obtain the ultraviolet-resistant asphalt material.
Further, the preparation method of the modified acrylic resin in the step S1 is as follows:
step A: uniformly mixing octamethyl cyclotetrasiloxane and lithium hydroxide, heating to 120-140 ℃, adding tetrahydrofuran, hexamethyldisiloxane, vinyl tri (2-methoxyethoxy) silane, an ultraviolet-resistant compound and boric acid, uniformly mixing, and reacting for 3-4 hours at 90-100 ℃ to obtain an organosilicon prepolymer;
and (B) step (B): uniformly mixing deionized water, sodium dodecyl benzene sulfonate and octyl phenol polyoxyethylene ether, heating to 60-70 ℃, adding sodium sulfite, 1/2 mass part of mixed monomer and organosilicon prepolymer, uniformly stirring, dripping an initiator prepared from benzoyl peroxide and water for 30-60min, dripping the rest mixed monomer for 30-45min, keeping the reaction temperature at 80-90 ℃, continuously reacting for 90-120min after the initiator is dripped, and cooling to 30-40 ℃ to obtain the modified acrylic resin.
In the technical scheme, under the condition of a lithium hydroxide catalyst, octamethyl cyclotetrasiloxane reacts with hexamethyldisiloxane, vinyl tri (2-methoxyethoxy) silane, an anti-ultraviolet compound and boric acid to form an organosilicon prepolymer; sodium dodecyl benzene sulfonate and octyl phenol polyoxyethylene ether are used as emulsifying agents, the mixed monomer and the organosilicon prepolymer are dispersed in a water phase to form emulsion, and under the action of an initiator, the mixed monomer and the organosilicon prepolymer are initiated to carry out polymerization reaction, so that the modified acrylic resin is prepared.
Further, in the step A, the mass ratio of the octamethyl cyclotetrasiloxane to the lithium hydroxide is 2: (1-1.5).
Further, the mass of the hexamethyldisiloxane in the step A is 0.5 to 1% of the mass of the octamethyl cyclotetrasiloxane.
Further, in the step A, the mass ratio of tetrahydrofuran, hexamethyldisiloxane, vinyltris (2-methoxyethoxy) silane and the ultraviolet resistant compound is 1: (0.1-0.2): (2.5-3.5): (0.4-0.8).
Further, the boric acid in the step A is 1-3% of the total mass of octamethyl cyclotetrasiloxane, tetrahydrofuran, hexamethyldisiloxane, vinyl tri (2-methoxyethoxy) silane and ultraviolet-resistant compounds.
Further, in the step B, the mass ratio of the sodium dodecyl benzene sulfonate, the octyl phenol polyoxyethylene ether and the deionized water is 1: (0.5-1): (10-20).
Further, in the step B, the mass of the sodium dodecyl benzene sulfonate and the octyl phenol polyoxyethylene ether is 1.5-2.0% of the total mass of the mixed monomers.
Further, the mass of sodium sulfite in the step B is 10-12% of the mass of sodium dodecyl benzene sulfonate.
Further, the mixed monomer in the step B is formed by mixing 22-32 parts by mass of methyl methacrylate, 16-19 parts by mass of butyl acrylate, 1.5-3 parts by mass of acrylic acid and 0.5-1 part by mass of N-vinyl caprolactam.
Further, the total mass of the mixed monomers in the step B is 10-13 times of the mass of the vinyl tri (2-methoxyethoxy) silane.
Further, the mass of the organosilicon prepolymer in the step B is 4-8% of the total mass of the mixed monomers.
Further, in the step B, the mass ratio of the benzoyl peroxide to the water is 1 (8-10), and the mass of the benzoyl peroxide is 0.8% -1.0% of the total mass of the mixed monomers.
Further, the residual mixed monomer in the step B is added in the form of a solution, and the specific preparation process comprises the following steps: toluene and absolute ethyl alcohol are mixed according to the volume ratio of 1:1, heated to 70-80 ℃, methyl methacrylate, butyl acrylate, acrylic acid and N-vinyl caprolactam are added, and the mixture is stirred uniformly to form a solution.
Further, the preparation method of the anti-ultraviolet compound in the step A is as follows:
(1) Mixing 2,4, 6-tribromoaniline, concentrated hydrochloric acid and deionized water, heating to 30-40 ℃, placing into an ice-water bath after 20-30min, keeping the temperature at-5-0 ℃, dropwise adding an aqueous solution containing sodium nitrite, reacting for 30-60min after 1-2h, adding urea to remove redundant sodium nitrite until the starch potassium iodide test paper with the reaction system liquid is not changed into blue in 3s, and filtering to obtain diazonium salt aqueous solution;
(2) Mixing 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, sodium hydroxide and deionized water, stirring until the mixture is completely dissolved, cooling to-5-0 ℃, dripping a heavy nitrogen salt aqueous solution for 2-3 hours, and reacting for 2-4 hours to obtain an intermediate;
(3) Mixing the intermediate, sodium hydroxide and deionized water, heating to 80-90 ℃, adding thiourea dioxide every 30min, adjusting the system temperature to-10-0 ℃ after the reaction is finished, adjusting the pH value to 2-3, carrying out suction filtration, and washing the filter cake for multiple times until the filtrate is neutral, thus preparing a reactant A;
(4) Mixing the reactant A with allyl glycidyl ether and dimethyl sulfoxide solvent, adding cation exchange resin, uniformly mixing, heating to 55-65 ℃, reacting for 3-4h, filtering, and rotary evaporating to obtain a reactant B; and (3) uniformly mixing the reactant B and vinyl triethoxysilane, heating to 60-70 ℃, dripping a mixed solution of azodiisobutyronitrile and toluene for 2-3 hours, reacting for 2-3 hours, filtering, and performing rotary evaporation to obtain the anti-ultraviolet compound.
In the technical scheme, 2,4, 6-tribromoaniline is taken as a starting material, diazotization is carried out through sodium nitrite at low temperature to obtain diazonium salt aqueous solution, 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone is taken as a phenol derivative, the hydroxy structure of the diazonium salt is subjected to coupling reaction with the amino structure in diazonium salt, thiourea dioxide is taken as a reducing agent in alkaline aqueous solution to reduce an intermediate, a reactant A is prepared, hydroxy in the molecular structure of the reactant A and epoxy groups in allyl glycidyl ether are subjected to epoxy ring-opening reaction to synthesize a reactant B with double bonds, and then the reactant B is reacted with vinyl triethoxysilane to prepare the ultraviolet resistant compound.
Further, in the step (1), the mass ratio of the 2,4, 6-tribromoaniline to the sodium nitrite is (3-4): 1.
further, the mass concentration of the concentrated hydrochloric acid in the step (1) is 35-40%, and the dosage is 1.5-2.5 times of the mass of the 2,4, 6-tribromoaniline.
Further, the mass of deionized water in the step (1) is 20-22% of the mass of concentrated hydrochloric acid.
Further, the mass concentration of the aqueous solution containing sodium nitrite in the step (1) is 12.5-16.7%.
Further, the mass of the 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone in the step (2) is 10 to 15 percent of that of the diazonium salt aqueous solution.
Further, in the step (2), the mass ratio of 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, sodium hydroxide and deionized water is (4-5): 1: (100-110).
Further, in the step (3), the mass ratio of the intermediate to the sodium hydroxide to the deionized water is 1: (0.9-1.0): (18-20).
Further, the total mass of thiourea dioxide added in the step (3) is 1.5-2 times of the mass of the intermediate.
Further, in the step (4), the mass ratio of the reactant A to the allyl glycidyl ether to the dimethyl sulfoxide solvent is 1: (2.5-3.0): (6-8).
Further, the cation exchange resin in the step (4) is Roman Hasi 1200NA resin in America, and the dosage is 25-35% of the total mass of the reactant A and the allyl glycidyl ether.
Further, in the step (4), the mass ratio of the reactant B to the vinyltriethoxysilane is 1: (2-3).
Further, in the step (4), the mass ratio of the azobisisobutyronitrile to the toluene is 1:500-1000, wherein the dosage of the azodiisobutyronitrile is 1-3% of the total mass of the reactant B and the vinyl triethoxysilane.
Further, the anti-ultraviolet asphalt in the step S3 comprises the following components in parts by weight: 10-20 parts of modified acrylic resin, 95-100 parts of matrix asphalt, 1-4 parts of SBS modifier, 1-1.5 parts of graphene, 15-25 parts of desulfurized rubber powder, 1-3 parts of ultraviolet absorber, 3-5 parts of warm mix agent, 1-2 parts of antioxidant and 2-3 parts of light shielding agent.
Further, the matrix asphalt is No. 90 asphalt.
Further, the SBS modifier is a styrene-butadiene-styrene triblock copolymer.
Further, the graphene is a multilayer graphene.
Further, the preparation method of the devulcanized rubber powder comprises the following steps:
mixing rubber powder, rubber desulfurizing agent and acidified oil, and stirring at 80-90deg.C for 15-30min to obtain a mixture; putting the mixture into a double-screw extruder, extruding at the temperature of 120-130 ℃ in a feeding section, 160-180 ℃ in a melting section, 180-190 ℃ in a metering section and 290-300 ℃ in an extruding temperature under the condition of 150-200rmp of rotating speed, and cooling to obtain the desulfurized rubber.
Further, the granularity of the rubber powder is 20-100 meshes.
Further, the dosage of the rubber desulfurizing agent is 2-4% of the mass of the rubber powder.
Further, the dosage of the acidizing oil is 30-35% of the mass of the rubber powder.
Further, the ultraviolet absorber is a reactant A.
Further, the warm mixing agent is WSG-H03, which is provided by Shanghai Wanzhen fine chemical industry Co.
Further, the antioxidant is an antioxidant 168, which is provided by Dinghai plastic chemical industry Co., ltd.
Further, the light shielding agent is composed of 1 to 1.5 parts by mass of nano titanium dioxide and 1 to 1.5 parts by mass of nano silicon dioxide.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the ultraviolet-resistant asphalt material and the preparation method thereof, the SBS modifier, the graphene and the desulfurization rubber powder act on the matrix asphalt in a synergistic manner to modify the matrix asphalt, and the graphene has strong pi-pi bond interaction on the PS section of the SBS, so that the dispersion performance of the graphene is improved, the network structure and the crosslinking degree of the SBS are enhanced, and the storage stability, the high-temperature performance and the stress sensitivity of the asphalt are obviously enhanced; the rubber powder breaks the sulfur cross-linking bond in the rubber by cracking and desulfurizing to break the three-dimensional network, so that the rubber and the asphalt are simultaneously subjected to physical cross-linking and chemical combination, the compatibility of the asphalt is improved, and the viscosity of the asphalt is reduced.
2. The invention relates to an anti-ultraviolet asphalt material and a preparation method thereof, wherein 2,4, 6-tribromoaniline is taken as an initial raw material, diazotization is carried out through sodium nitrite at low temperature to prepare diazonium salt aqueous solution, 3-cyano-4-methyl-6-hydroxy-N-methyl pyridone is taken as a phenol derivative, a hydroxyl structure in molecules and an amino structure in diazonium salt are subjected to coupling reaction, thiourea dioxide is taken as a reducing agent in an alkaline aqueous solution to prepare a reactant A, hydroxyl in the molecular structure and epoxy in allyl glycidyl ether are subjected to epoxy ring-opening reaction to synthesize a reactant B with double bonds, and then the reactant B is reacted with vinyl triethoxysilane to prepare an anti-ultraviolet compound, wherein the structure contains an ultraviolet absorbent molecular structure, has good thermal stability and photostability, can selectively absorb ultraviolet light sensitive to the polymer, and can be converted into a harmless thermal energy form to be released.
3. According to the ultraviolet-resistant asphalt material and the preparation method thereof, octamethyl cyclotetrasiloxane, hexamethyldisiloxane, vinyl tri (2-methoxyethoxy) silane, an ultraviolet-resistant compound and boric acid undergo condensation reaction under the condition of a lithium hydroxide catalyst to form an organosilicon prepolymer; the sodium dodecyl benzene sulfonate and the octyl phenol polyoxyethylene ether are used as emulsifying agents, the mixed monomer and the organosilicon prepolymer are dispersed in a water phase to form emulsion, and under the action of an initiator, the mixed monomer and the organosilicon prepolymer are initiated to carry out polymerization reaction, so that the modified acrylic resin is prepared, has low heat absorption and high reflection on solar radiation, and can effectively reduce the pavement temperature, thereby achieving the effect of long-term use.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiment, the matrix asphalt is No. 90 asphalt, which is provided by Jinan Xinsheng chemical Co., ltd; the SBS modifier is a styrene-butadiene-styrene triblock copolymer provided by Ningbo Innovative plastics Co., ltd; the granularity of the rubber powder is 20-100 meshes, and the rubber powder is provided by a mineral product processing factory in the Ming county of the Ming dynasty; the rubber desulfurizing agent is RV.S, provided by Hebei Ruiwei technology Co., ltd; the acidified oil is 16522 soybean acidified oil, which is provided by Shanghai Asia chemical industry Limited liability company; the graphene is multilayer graphene, the granularity is 3nm, and the graphene is provided by Shanghai detection field new material science and technology Co., ltd; the warm mixing agent is WSG-H03, which is provided by Shanghai Wanzhen fine chemical industry Co., ltd; the antioxidant is antioxidant 168, which is provided by Dinghai plastics chemical industry Co., ltd; the nano titanium dioxide is anatase, has the granularity of 5-15nm and is provided by Nanjing Baoket New Material Co., ltd; the granularity of the nano silicon dioxide is 20nm, which is provided by Jiangsu Tiansu new material Co., ltd; the cation exchange resin is Robin Hasi 1200NA resin in America, provided by water treatment equipment limited company of Huashiwei in Dongguan;
in the following examples and comparative examples 1 part equals 10g.
Example 1:
the preparation method of the devulcanized rubber powder comprises the following steps:
mixing 15 parts of rubber powder, 0.3 part of rubber desulfurizing agent and 4.5 parts of acidified oil, and stirring for 15min at 80 ℃ to prepare a mixture; putting the mixture into a double-screw extruder, extruding at the temperature of 120 ℃ in a feeding section, 160 ℃ in a melting section, 180 ℃ in a metering section and 290 ℃ in an extruding temperature, and cooling to obtain the desulfurized rubber.
The preparation method of the anti-ultraviolet compound comprises the following steps:
(1) 3 parts of 2,4, 6-tribromoaniline, 4.5 parts of 35% concentrated hydrochloric acid and 1 part of deionized water are mixed, heated to 30 ℃, placed into an ice-water bath after 20 minutes, kept at the temperature of minus 5 ℃, dropwise added with 1 part of sodium nitrite aqueous solution, after 1 hour, reacted for 30 minutes, added with urea to remove redundant sodium nitrite until the starch potassium iodide test paper 3S with the reaction system liquid is not changed into blue, and filtered to obtain diazonium salt aqueous solution;
(2) Mixing 0.4 part of 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, 0.1 part of sodium hydroxide and 10 parts of deionized water, stirring until the mixture is completely dissolved, cooling to-5 ℃, dropwise adding 4 parts of diazonium salt aqueous solution, and reacting for 2 hours to obtain an intermediate;
(3) Mixing 2 parts of intermediate, 1.8 parts of sodium hydroxide and 36 parts of deionized water, heating to 80 ℃, adding 0.75 part of thiourea dioxide every 30min, adjusting the system temperature to-10 ℃ after the reaction is finished, adjusting the pH value to 2, performing suction filtration, and washing a filter cake for multiple times until the filtrate is neutral to prepare a reactant A;
(4) Mixing 1 part of reactant A with 2.5 parts of allyl glycidyl ether and 6 parts of dimethyl sulfoxide solvent, adding 0.88 part of cation exchange resin, uniformly mixing, heating to 55 ℃, reacting for 3 hours, filtering, and rotationally evaporating to obtain a reactant B; 3 parts of reactant B and 6 parts of vinyl triethoxysilane are uniformly mixed, the temperature is raised to 60 ℃, a mixed solution of 0.09 part of azodiisobutyronitrile and 45 parts of toluene is dripped, the dripping is completed for 2 hours, the reaction is carried out for 2 hours, and the anti-ultraviolet compound is prepared through filtration and rotary evaporation.
The preparation method of the modified acrylic resin comprises the following steps:
step A: uniformly mixing 32 parts of octamethyl cyclotetrasiloxane and 16 parts of lithium hydroxide, heating to 120 ℃, adding 1.6 parts of tetrahydrofuran, 0.16 part of hexamethyldisiloxane, 4 parts of vinyl tri (2-methoxyethoxy) silane, 0.64 part of anti-ultraviolet compound and 0.39 part of boric acid, uniformly mixing, and reacting for 3 hours at 90 ℃ to obtain an organosilicon prepolymer;
and (B) step (B): uniformly mixing 4 parts of deionized water, 0.4 part of sodium dodecyl benzene sulfonate and 0.2 part of octyl phenol polyoxyethylene ether, heating to 60 ℃, adding 0.04 part of sodium sulfite, 11 parts of methyl methacrylate, 8 parts of butyl acrylate, 0.75 part of acrylic acid, 0.25 part of N-vinylcaprolactam and 1.6 parts of organosilicon prepolymer, uniformly stirring, dropwise adding an initiator prepared from 0.32 part of benzoyl peroxide and 2.56 parts of water for 30min, dropwise adding the rest of mixed monomer at the same time, dropwise adding the rest of mixed monomer for 30min, keeping the reaction temperature at 80 ℃, continuously reacting for 90min after the initiator is dropwise added, and cooling to 30 ℃ to obtain the modified acrylic resin.
The preparation method of the ultraviolet-resistant asphalt material comprises the following steps:
s1: heating 10 parts of modified acrylic resin to 55 ℃, and preserving heat for later use;
s2, heating 95 parts of matrix asphalt to 130 ℃, adding 1 part of SBS modifier, heating to 170 ℃, shearing for 2 hours at a shearing rate of 5000rad/min, adding 10 parts of modified acrylic resin, 15 parts of desulfurized rubber powder and 1 part of graphene, shearing for 40 minutes at a shearing rate of 5000rad/min, and maintaining the temperature of 175 ℃ and stirring for 2 hours to prepare modified asphalt;
and S3, maintaining the temperature of the modified asphalt base material at 170 ℃, adding 1 part of reactant A, 3 parts of warm mixing agent and 1 part of antioxidant, shearing the modified asphalt base material with 1 part of nano titanium dioxide and 1 part of nano silicon dioxide serving as light shielding agents for 40min at a shearing rate of 5000rad/min, and preserving the temperature at 150 ℃ for 30min after the shearing is finished to obtain the ultraviolet-resistant asphalt material.
Example 2:
the preparation method of the devulcanized rubber powder comprises the following steps:
mixing 20 rubber powder, 0.6 rubber desulfurizing agent and 7 parts of acidified oil, and stirring for 20min at 85 ℃ to obtain a mixture; putting the mixture into a double-screw extruder, extruding at a feeding section temperature of 125 ℃, a melting section temperature of 170 ℃, a metering section temperature of 185 ℃ and an extrusion temperature of 295 ℃ under the condition of rotating speed of 180rmp, and cooling to obtain the desulfurized rubber.
The preparation method of the anti-ultraviolet compound comprises the following steps:
(1) Mixing 3.5 parts of 2,4, 6-tribromoaniline, 7 parts of concentrated hydrochloric acid and 1.5 parts of deionized water, heating to 35 ℃, placing into an ice-water bath after 25min, keeping the temperature at-3 ℃, dropwise adding 1 part of aqueous solution containing sodium nitrite, finishing the dropwise adding for 1.5h, reacting for 45min, adding urea to remove excessive sodium nitrite until the interior of the starch potassium iodide test paper 3S dropwise added with reaction system liquid does not become blue, and filtering to obtain diazonium salt aqueous solution;
(2) Mixing 0.54 part of 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, 0.12 part of sodium hydroxide and 12.6 parts of deionized water, stirring until the mixture is completely dissolved, cooling to-3 ℃, dropwise adding 4.5 parts of diazonium salt aqueous solution, and reacting for 3 hours to obtain an intermediate;
(3) Mixing 3 parts of intermediate, 3 parts of sodium hydroxide and 57 parts of deionized water, heating to 85 ℃, adding 1.5 parts of thiourea dioxide every 30min, adjusting the system temperature to-5 ℃, adjusting the pH value to 3, carrying out suction filtration, and washing a filter cake for multiple times until the filtrate is neutral to obtain a reactant A;
(4) Mixing 1 part of reactant A with 2.8 parts of allyl glycidyl ether and 7 parts of dimethyl sulfoxide solvent, adding 1.14 parts of cation exchange resin, uniformly mixing, heating to 60 ℃, reacting for 3.5 hours, filtering, and rotationally evaporating to obtain a reactant B; and uniformly mixing 1 part of reactant B and 2.5 parts of vinyl triethoxysilane, heating to 65 ℃, dripping a mixed solution of 0.07 part of azodiisobutyronitrile and 50 parts of toluene for 2.5 hours, reacting for 2.5 hours, and filtering and rotary evaporating to obtain the anti-ultraviolet compound.
The preparation method of the modified acrylic resin comprises the following steps:
step A: mixing 31 parts of octamethyl cyclotetrasiloxane and 20 parts of lithium hydroxide uniformly, heating to 130 ℃, adding 1.47 parts of tetrahydrofuran, 0.22 part of hexamethyldisiloxane, 4.4 parts of vinyl tri (2-methoxyethoxy) silane, 0.88 part of anti-ultraviolet compound and 0.75 part of boric acid, mixing uniformly, and reacting for 3.5 hours at 95 ℃ to obtain an organosilicon prepolymer;
and (B) step (B): uniformly mixing 6.9 parts of deionized water, 0.46 part of sodium dodecyl benzene sulfonate and 0.37 part of octyl phenol polyoxyethylene ether, heating to 65 ℃, adding 0.05 part of sodium sulfite, 14 parts of methyl methacrylate, 9 parts of butyl acrylate, 1 part of acrylic acid, 0.4 part of N-vinylcaprolactam and 2.9 parts of organosilicon prepolymer, uniformly stirring, dropwise adding an initiator prepared from 0.44 part of benzoyl peroxide and 3.96 parts of water for 45min, dropwise adding the rest of mixed monomer at the same time, dropwise adding for 35min, keeping the reaction temperature at 85 ℃, continuously reacting for 110min after the initiator is dropwise added, and cooling to 35 ℃ to obtain the modified acrylic resin.
The preparation method of the ultraviolet-resistant asphalt material comprises the following steps:
s1: 15 parts of modified acrylic resin is heated to 60 ℃, and the mixture is stored in a heat preservation way for standby;
s2, heating 98 parts of matrix asphalt to 130 ℃, adding 2 parts of SBS modifier, heating to 175 ℃, shearing for 2.5 hours at a shearing rate of 5500rad/min, adding 15 parts of modified acrylic resin, 20 parts of desulfurized rubber powder and 1 part of graphene, shearing for 50 minutes at a shearing rate of 6000rad/min, and maintaining 180 ℃ and stirring for 2.5 hours to prepare modified asphalt;
and S3, keeping the temperature of the modified asphalt base material at 175 ℃, adding 2 parts of reactant A, 4 parts of warm mixing agent and 1.5 parts of antioxidant, shearing 1.5 parts of nano titanium dioxide and 1 part of nano silicon dioxide serving as light shielding agents for 45min at a shearing rate of 5500rad/min, and keeping the temperature at 160 ℃ for 45min after shearing is finished to prepare the ultraviolet-resistant asphalt material.
Example 3:
the preparation method of the devulcanized rubber powder comprises the following steps:
mixing 25 parts of rubber powder, 1 part of rubber desulfurizing agent and 10 parts of acidified oil, and stirring for 30min at 90 ℃ to obtain a mixture; putting the mixture into a double-screw extruder, extruding at the temperature of 130 ℃ in a feeding section, 180 ℃ in a melting section, 190 ℃ in a metering section and 300 ℃ in an extruding temperature, and cooling to obtain the desulfurized rubber.
The preparation method of the anti-ultraviolet compound comprises the following steps:
(1) Mixing 4 parts of 2,4, 6-tribromoaniline, 10 parts of concentrated hydrochloric acid and 2.2 parts of deionized water, heating to 40 ℃, placing into an ice-water bath after 30min, keeping the temperature at 0 ℃, dropwise adding 1 part of aqueous solution containing sodium nitrite, after 2h, reacting for 60min, adding urea to remove redundant sodium nitrite until the 3S of the starch potassium iodide test paper in which the reaction system liquid is dropwise added does not become blue, and filtering to obtain diazonium salt aqueous solution;
(2) Mixing 0.75 part of 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, 0.15 part of sodium hydroxide and 16.5 parts of deionized water, stirring until the mixture is completely dissolved, cooling to 0 ℃, dropwise adding 5 parts of diazonium salt aqueous solution, and reacting for 4 hours to obtain an intermediate;
(3) Mixing 4 parts of intermediate, 4 parts of sodium hydroxide and 80 parts of deionized water, heating to 90 ℃, adding 2 parts of thiourea dioxide every 30min, adjusting the system temperature to 0 ℃, adjusting the pH value to 3, carrying out suction filtration, and washing a filter cake for multiple times until the filtrate is neutral, thus preparing a reactant A;
(4) Mixing 1 part of reactant A, 3 parts of allyl glycidyl ether and 8 parts of dimethyl sulfoxide solvent, adding 1.4 parts of cation exchange resin, uniformly mixing, heating to 65 ℃, reacting for 4 hours, filtering, and performing rotary evaporation to obtain a reactant B; and (3) uniformly mixing 1 part of reactant B and 3 parts of vinyl triethoxysilane, heating to 70 ℃, dripping a mixed solution of 0.12 part of azodiisobutyronitrile and 120 parts of toluene for 3 hours, reacting for 3 hours, filtering, and rotationally evaporating to obtain the anti-ultraviolet compound.
The preparation method of the modified acrylic resin comprises the following steps:
step A: uniformly mixing 22 parts of octamethyl cyclotetrasiloxane and 16.5 parts of lithium hydroxide, heating to 140 ℃, adding 1.09 parts of tetrahydrofuran, 0.22 part of hexamethyldisiloxane, 3.8 parts of vinyl tri (2-methoxyethoxy) silane, 0.87 part of anti-ultraviolet compound and 0.83 part of boric acid, uniformly mixing, and reacting for 4 hours at 100 ℃ to obtain an organosilicon prepolymer;
and (B) step (B): uniformly mixing 10 parts of deionized water, 0.5 part of sodium dodecyl benzene sulfonate and 0.5 part of octyl phenol polyoxyethylene ether, heating to 70 ℃, adding 0.06 part of sodium sulfite, 16 parts of methyl methacrylate, 9.5 parts of butyl acrylate, 1.5 parts of acrylic acid, 0.75 part of N-vinyl caprolactam and 4 parts of organosilicon prepolymer, uniformly stirring, dropwise adding an initiator prepared from 0.5 part of benzoyl peroxide and 5 parts of water, finishing the dropwise adding of the rest of mixed monomer for 60min, finishing the dropwise adding of the rest of mixed monomer for 45min, keeping the reaction temperature at 90 ℃, continuing to react for 120min after the dropwise adding of the initiator, and cooling to 40 ℃ to obtain the modified acrylic resin.
The preparation method of the ultraviolet-resistant asphalt material comprises the following steps:
s1: heating 20 parts of modified acrylic resin to 65 ℃, and preserving heat for later use;
s2, heating 100 parts of matrix asphalt to 150 ℃, adding 4 parts of SBS modifier, heating to 180 ℃, shearing for 3 hours at a shearing rate of 6000rad/min, adding 20 parts of modified acrylic resin, 25 parts of desulfurized rubber powder and 1.5 parts of graphene, shearing for 60 minutes at a shearing rate of 6000rad/min, and maintaining stirring and developing for 3 hours at 185 ℃ to obtain modified asphalt;
and S3, maintaining the temperature of the modified asphalt base material at 180 ℃, adding 3 parts of reactant A, 5 parts of warm mixing agent and 2 parts of antioxidant, using 1.5 parts of nano titanium dioxide and 1.5 parts of nano silicon dioxide as light shielding agents, shearing for 50min at a shearing rate of 6000rad/min, and maintaining the temperature at 170 ℃ for 60min after shearing is finished to prepare the ultraviolet-resistant asphalt material.
Comparative example 1: in comparison with example 1, comparative example 1 replaces reactant a in step S3 with an identical mass of ultraviolet absorber UV-326, the other steps and processes being identical to example 1.
Comparative example 2: in comparison with example 2, comparative example 2 replaces the devulcanized rubber powder in step S1 with a normal rubber powder of the same quality, and the other steps are the same as in example 2.
Comparative example 3: in comparison with example 2, comparative example 3 replaces the modified acrylic resin in step S1, step S2 with a normal acrylic resin of the same quality, and the other steps are the same as in example 2.
Comparative example 4: in comparison with example 2, the preparation method of the anti-ultraviolet compound in comparative example 4 is as follows:
(1) Mixing 5 parts of 2,4, 6-tribromoaniline, 10 parts of concentrated hydrochloric acid and 2 parts of deionized water, heating to 35 ℃, placing into an ice-water bath after 25min, keeping the temperature at-3 ℃, dropwise adding 1 part of aqueous solution containing sodium nitrite, finishing the dropwise adding for 1.5h, reacting for 45min, adding urea to remove redundant sodium nitrite until the interior of the starch potassium iodide test paper 3S dropwise added with reaction system liquid does not become blue, and filtering to obtain diazonium salt aqueous solution;
(2) Mixing 0.54 part of 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, 0.12 part of sodium hydroxide and 12.6 parts of deionized water, stirring until the mixture is completely dissolved, cooling to-3 ℃, dropwise adding 4.5 parts of diazonium salt aqueous solution, and reacting for 3 hours to obtain an intermediate;
(3) Mixing 3 parts of intermediate, 3 parts of sodium hydroxide and 57 parts of deionized water, heating to 85 ℃, adding 1.5 parts of thiourea dioxide every 30min, adjusting the system temperature to-5 ℃, adjusting the pH value to 3, carrying out suction filtration, and washing a filter cake for multiple times until the filtrate is neutral to obtain a reactant A;
(4) Mixing 1 part of reactant A with 2.8 parts of allyl glycidyl ether and 7 parts of dimethyl sulfoxide solvent, adding 1.14 parts of cation exchange resin, uniformly mixing, heating to 60 ℃, reacting for 3.5 hours, filtering, and rotationally evaporating to obtain a reactant B; and uniformly mixing 1 part of reactant B and 2.5 parts of vinyl triethoxysilane, heating to 65 ℃, dripping a mixed solution of 0.07 part of azodiisobutyronitrile and 50 parts of toluene for 2.5 hours, reacting for 2.5 hours, and filtering and rotary evaporating to obtain the anti-ultraviolet compound.
In comparison with example 2, the mass ratio of 2,4, 6-tribromoaniline to sodium nitrite in comparative example 4 is 5:1; the remaining steps were the same as in example 2.
Experiment
The asphalt materials obtained in examples 1 to 3 and comparative examples 1 to 4 were sampled, and the properties thereof were measured and the measurement results were recorded, respectively:
and (3) measuring penetration according to JTG E20-2011, namely, highway engineering asphalt and asphalt mixture experimental procedure, preheating an asphalt sample to 150-160 ℃, pouring the asphalt sample into a container of a penetration meter, completely inserting a needle into the sample after a layer of film appears on the surface of the sample, keeping for 5 seconds, and recording the descending distance of the needle.
The softening point was determined according to GB/T4507-2014 asphalt softening Point determination method, ring and ball method, experimental procedure: about 5 grams of the asphalt sample was placed in a conical cup, the measuring cup was placed in a softening point tester, and after the temperature had stabilized, the temperature value was recorded. The softening point tester heater was turned on and heated at a rate of 5 ℃ per minute until the bitumen sample began to soften. When the asphalt sample begins to soften, a thermometer is inserted into the measuring cup, and the temperature value at which the asphalt sample begins to drop and contact with the glass needle is observed to be the softening point. The softening point temperature value is recorded and the necessary data processing and recording is performed.
The determination of the ductility values according to GB/T4508-2010 asphalt ductility assay comprises the following experimental steps: the diameter of the sample was 25mm, the height was 10mm, the stretching speed of the measured elongation was 5cm/min, and the temperature at the time of stretching was 5 ℃.
Ultraviolet radiation aging test: preparing the asphalt material to be tested into a sample with the length of 20cm multiplied by the width of 20cm and the thickness of 3cm, and placing the sample into an ultraviolet radiation test box at the temperature range of 20-50 ℃ and 300W/m 2 The ultraviolet type is UV-B type, and the sample is taken out after ultraviolet irradiation for 500 hours. And (5) performing penetration, ductility and softening point on the aged sample again to evaluate the ultraviolet aging resistance of the asphalt.
Test results
From the data in the above table, the following conclusions can be clearly drawn:
1. compared with the embodiment 1-3, the ultraviolet ageing resistance of the comparative example 1 and the comparative example 3 is reduced, which shows that the reactant A prepared by the invention has better ultraviolet absorption effect compared with the ultraviolet absorbent UV-326, and the modified acrylic resin prepared by the invention has better ageing resistance compared with the common acrylic resin.
2. Compared with examples 1-3, the penetration and softening point of the product obtained in comparative example 2 are increased, and the ductility is reduced, which shows that the desulphurized rubber and asphalt generate physical crosslinking and chemical combination at the same time, and the compatibility and high-temperature stability of the asphalt are improved.
3. Compared with examples 1-3, the ultraviolet ageing resistance of the product obtained in comparative example 4 is reduced, the ultraviolet ageing resistance of the asphalt material prepared by the invention is influenced by the proportion of each reagent in the preparation process of the ultraviolet-resistant compound, and the mass proportion in the range is selected, so that the prepared asphalt material has excellent ultraviolet ageing resistance, converts absorbed light energy into heat energy and prolongs the service life.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process method article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process method article or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A preparation method of an anti-ultraviolet asphalt material is characterized by comprising the following steps: the method comprises the following steps:
step S1: heating the modified acrylic resin to 55-65 ℃, and preserving heat for later use;
s2, heating matrix asphalt to 130-150 ℃, adding an SBS modifier, heating to 170-180 ℃, shearing for 2-3 hours at a shearing rate of 5000-6000rad/min, adding modified acrylic resin, desulfurized rubber powder and graphene, shearing for 40-60 minutes at a shearing rate of 5000-6000rad/min, and maintaining the temperature of 175-185 ℃ and stirring for 2-3 hours to prepare modified asphalt;
step S3, maintaining the temperature of the modified asphalt at 170-180 ℃, adding an ultraviolet absorbent, a warm mixing agent, an antioxidant and a light shielding agent, shearing for 40-50min at a shearing rate of 5000-6000rad/min, and preserving the temperature at 150-170 ℃ for 30-60min after shearing to obtain an ultraviolet-resistant asphalt material;
the preparation method of the modified acrylic resin in the step S1 comprises the following steps:
step A: uniformly mixing octamethyl cyclotetrasiloxane and lithium hydroxide, heating to 120-140 ℃, adding dimethyl sulfoxide, hexamethyldisiloxane, vinyl tri (2-methoxyethoxy) silane, an ultraviolet-resistant compound and boric acid, uniformly mixing, and reacting for 3-4 hours at 90-100 ℃ to obtain an organosilicon prepolymer;
and (B) step (B): uniformly mixing deionized water, sodium dodecyl benzene sulfonate and octyl phenol polyoxyethylene ether, heating to 60-70 ℃, adding sodium sulfite, 1/2 mass part of mixed monomer and organosilicon prepolymer, uniformly stirring, dripping an initiator prepared from benzoyl peroxide and water for 30-60min, dripping the rest mixed monomer for 30-45min, keeping the reaction temperature at 80-90 ℃, continuously reacting for 90-120min after the initiator is dripped, and cooling to 30-40 ℃ to obtain modified acrylic resin;
the preparation method of the anti-ultraviolet compound in the step A comprises the following steps:
(1) Mixing 2,4, 6-tribromoaniline, concentrated hydrochloric acid and deionized water, heating to 30-40 ℃, placing into an ice-water bath after 20-30min, keeping the temperature at-5-0 ℃, dropwise adding an aqueous solution containing sodium nitrite, reacting for 30-60min after 1-2h, adding urea to remove redundant sodium nitrite until the starch potassium iodide test paper with the reaction system liquid is not changed into blue in 3s, and filtering to obtain diazonium salt aqueous solution;
(2) Mixing 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone, sodium hydroxide and deionized water, stirring until the mixture is completely dissolved, cooling to-5-0 ℃, dripping a heavy nitrogen salt aqueous solution for 2-3 hours, and reacting for 2-4 hours to obtain an intermediate;
(3) Mixing the intermediate, sodium hydroxide and deionized water, heating to 80-90 ℃, adding thiourea dioxide every 30min, adjusting the system temperature to-10-0 ℃ after the reaction is finished, adjusting the pH value to 2-3, carrying out suction filtration, and washing the filter cake for multiple times until the filtrate is neutral, thus preparing a reactant A;
(4) Mixing the reactant A with allyl glycidyl ether and dimethyl sulfoxide solvent, adding cation exchange resin, uniformly mixing, heating to 55-65 ℃, reacting for 3-4h, filtering, and rotary evaporating to obtain a reactant B; uniformly mixing the reactant B and vinyl triethoxysilane, dripping a mixed solution of azodiisobutyronitrile and toluene for 2-3 hours, reacting for 2-3 hours, filtering, and rotationally evaporating to obtain an ultraviolet-resistant compound;
in the step (1), the mass ratio of the 2,4, 6-tribromoaniline to the sodium nitrite is (3-4): 1, a step of;
the mixed monomer in the step B is formed by mixing 22-32 parts by mass of methyl methacrylate, 16-19 parts by mass of butyl acrylate, 1.5-3 parts by mass of acrylic acid and 0.5-1 part by mass of N-vinyl caprolactam;
the ultraviolet-resistant asphalt material in the step S3 comprises the following components in parts by weight: 10-20 parts of modified acrylic resin, 95-100 parts of matrix asphalt, 1-4 parts of SBS modifier, 1-1.5 parts of graphene, 15-25 parts of desulfurized rubber powder, 1-3 parts of ultraviolet absorbent, 3-5 parts of warm mix agent, 1-2 parts of antioxidant and 2-3 parts of light shielding agent;
the ultraviolet absorber is a reactant A.
2. The method for preparing the ultraviolet resistant asphalt material according to claim 1, wherein the method comprises the following steps: the mass of the 3-cyano-4-methyl-6-hydroxy-N-methylpyrrolidone in the step (2) is 10-15% of that of the diazonium salt aqueous solution.
3. The method for preparing the ultraviolet resistant asphalt material according to claim 1, wherein the method comprises the following steps: the SBS modifier is a styrene-butadiene-styrene triblock copolymer.
4. The method for preparing the ultraviolet resistant asphalt material according to claim 1, wherein the method comprises the following steps: the preparation method of the devulcanized rubber powder comprises the following steps:
mixing rubber powder, rubber desulfurizing agent and acidified oil, and stirring at 80-90deg.C for 15-30min to obtain a mixture; feeding the mixture into a double-screw extruder, extruding at 120-130 deg.c in the feeding section, 160-180 deg.c in the melting section, 180-190 deg.c in the metering section and 290-300 deg.c in the extruding temperature and 150-200rmp rotation speed, and cooling to obtain the desulfurized rubber.
5. The method for producing an ultraviolet-resistant asphalt material according to claim 1, wherein the light shielding agent is composed of 1 to 1.5 parts by mass of nano-titania and 1 to 1.5 parts by mass of nano-silica.
6. A uv resistant asphalt material made according to the method of any one of claims 1-5.
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| CN103146207A (en) * | 2013-03-19 | 2013-06-12 | 湖北国创高新材料股份有限公司 | Ultraviolet aging-resistant compound modified asphalt and preparation method thereof |
| CN108641380A (en) * | 2018-03-30 | 2018-10-12 | 佛山市路邦沥青有限公司 | A kind of preparation method of efficiently anti-aging modified pitch |
| CN113388256A (en) * | 2021-05-19 | 2021-09-14 | 山东高速集团有限公司创新研究院 | Anti-ultraviolet asphalt and preparation method and application thereof |
| CN114605844A (en) * | 2022-03-14 | 2022-06-10 | 广州大象超薄路面技术开发有限公司 | Ultraviolet light aging resistant desulfurized rubber powder modified asphalt and preparation method thereof |
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| CN103146207A (en) * | 2013-03-19 | 2013-06-12 | 湖北国创高新材料股份有限公司 | Ultraviolet aging-resistant compound modified asphalt and preparation method thereof |
| CN108641380A (en) * | 2018-03-30 | 2018-10-12 | 佛山市路邦沥青有限公司 | A kind of preparation method of efficiently anti-aging modified pitch |
| CN113388256A (en) * | 2021-05-19 | 2021-09-14 | 山东高速集团有限公司创新研究院 | Anti-ultraviolet asphalt and preparation method and application thereof |
| CN114605844A (en) * | 2022-03-14 | 2022-06-10 | 广州大象超薄路面技术开发有限公司 | Ultraviolet light aging resistant desulfurized rubber powder modified asphalt and preparation method thereof |
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