CN112745688B - Anti-aging high-viscosity modified asphalt additive and preparation method thereof - Google Patents
Anti-aging high-viscosity modified asphalt additive and preparation method thereof Download PDFInfo
- Publication number
- CN112745688B CN112745688B CN201911040860.7A CN201911040860A CN112745688B CN 112745688 B CN112745688 B CN 112745688B CN 201911040860 A CN201911040860 A CN 201911040860A CN 112745688 B CN112745688 B CN 112745688B
- Authority
- CN
- China
- Prior art keywords
- stabilizer
- parts
- coating
- weight
- additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 89
- 239000000654 additive Substances 0.000 title claims abstract description 47
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 47
- 230000000996 additive effect Effects 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000003381 stabilizer Substances 0.000 claims abstract description 103
- 238000000576 coating method Methods 0.000 claims abstract description 65
- 239000011248 coating agent Substances 0.000 claims abstract description 63
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000003208 petroleum Substances 0.000 claims abstract description 21
- 239000010692 aromatic oil Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 25
- 239000000725 suspension Substances 0.000 claims description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 21
- 229910052717 sulfur Inorganic materials 0.000 claims description 21
- 239000011593 sulfur Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 18
- -1 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphonate Chemical compound 0.000 claims description 15
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 14
- 108010010803 Gelatin Proteins 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- 239000008273 gelatin Substances 0.000 claims description 13
- 229920000159 gelatin Polymers 0.000 claims description 13
- 235000019322 gelatine Nutrition 0.000 claims description 13
- 235000011852 gelatine desserts Nutrition 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000005077 polysulfide Substances 0.000 claims description 12
- 229920001021 polysulfide Polymers 0.000 claims description 12
- 150000008117 polysulfides Polymers 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000006011 modification reaction Methods 0.000 claims description 11
- 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 10
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 10
- 150000001282 organosilanes Chemical class 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 8
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 claims description 4
- WQOXQRCZOLPYPM-UHFFFAOYSA-N Dimethyl disulfide Natural products CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- XNAFLNBULDHNJS-UHFFFAOYSA-N dichloro(phenyl)silicon Chemical compound Cl[Si](Cl)C1=CC=CC=C1 XNAFLNBULDHNJS-UHFFFAOYSA-N 0.000 claims description 3
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 claims description 3
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 claims description 2
- XESZUVZBAMCAEJ-UHFFFAOYSA-N 4-tert-butylcatechol Chemical compound CC(C)(C)C1=CC=C(O)C(O)=C1 XESZUVZBAMCAEJ-UHFFFAOYSA-N 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000002199 base oil Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- XLTBPTGNNLIKRW-UHFFFAOYSA-N methyldisulfanylethane Chemical compound CCSSC XLTBPTGNNLIKRW-UHFFFAOYSA-N 0.000 claims description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000005054 phenyltrichlorosilane Substances 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- ORVMIVQULIKXCP-UHFFFAOYSA-N trichloro(phenyl)silane Chemical compound Cl[Si](Cl)(Cl)C1=CC=CC=C1 ORVMIVQULIKXCP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 2
- 229930195733 hydrocarbon Natural products 0.000 claims 2
- 150000002430 hydrocarbons Chemical class 0.000 claims 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 239000011230 binding agent Substances 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 13
- 230000032683 aging Effects 0.000 abstract description 9
- 238000005253 cladding Methods 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 24
- 238000001035 drying Methods 0.000 description 24
- 238000005406 washing Methods 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- 238000001914 filtration Methods 0.000 description 18
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- 239000003607 modifier Substances 0.000 description 10
- 229940083575 sodium dodecyl sulfate Drugs 0.000 description 10
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000010920 waste tyre Substances 0.000 description 2
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 description 1
- AIAMDEVDYXNNEU-UHFFFAOYSA-N 6-methylheptyl propanoate Chemical compound CCC(=O)OCCCCCC(C)C AIAMDEVDYXNNEU-UHFFFAOYSA-N 0.000 description 1
- CETBSQOFQKLHHZ-UHFFFAOYSA-N Diethyl disulfide Chemical compound CCSSCC CETBSQOFQKLHHZ-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000008096 xylene Substances 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses an anti-aging high-viscosity modified asphalt additive and a preparation method thereof. The additive comprises the following raw material components in parts by weight: 100 parts of SBS, 20-40 parts of petroleum resin, 10-40 parts of aromatic oil, 5-8 parts of stabilizer and its cladding, and 1-4 parts of anti-aging agent. The stabilizer and the coating thereof are granular, the diameter of the granules is 100-150 micrometers, and the thickness of the coating particle wall material is 3-6 micrometers. The coating is surface modified silicon dioxide. The high-viscosity modified asphalt additive can obviously improve the viscosity of asphalt, is convenient to use, has better ageing resistance, and has very good compatibility and uniform dispersibility with the asphalt.
Description
Technical Field
The invention relates to a high-viscosity modified asphalt additive and a preparation method thereof, in particular to a high-viscosity modified asphalt additive with aging resistance and a preparation method thereof.
Background
The high-viscosity asphalt generally refers to asphalt with dynamic viscosity of more than 20000 Pa.s at 60 ℃, and is suitable for the application of open-graded anti-skid wearing course (OGFC) and other road surfaces. The OGFC road surface has good drainage, noise reduction and skid resistance due to the large void ratio. However, the structural characteristic of large void ratio also leads to the increase of the contact area of the asphalt with air and ultraviolet light, accelerates the aging of the asphalt and shortens the service life of the pavement.
At present, high-viscosity asphalt is mainly prepared by adding a polymer into asphalt, can obviously improve the high-temperature and low-temperature performances of the asphalt and improve the viscosity of the asphalt, but has the problems of uneven dispersion of the polymer, poor compatibility and the like. At present, there are two main ways to prepare stable high-viscosity asphalt by using high-viscosity additives: (1) shearing the high-viscosity additive into the asphalt, and additionally adding a stabilizer; (2) the high viscosity additive, which itself contains a stabilizer, is sheared into the asphalt. The former needs to add a stabilizer additionally, increases operation steps and has big smell; the latter is usually directly added into high viscosity additive, which is easy to cause the advance cross-linking of polymer, and is not favorable for the uniform dispersion in asphalt. In addition, there is a problem that the aging resistance is insufficient.
CN101457009A discloses a high-viscosity asphalt modifier and a preparation method thereof, wherein the modifier comprises SIS, coumarone resin, oleamide and the like. The modifier has good compatibility with asphalt, and obviously improves the adhesion of the asphalt. However, the problem of aging resistance of high-viscosity asphalt is not considered, and the aging resistance of the high-viscosity asphalt is insufficient, so that the service life of the high-viscosity asphalt is influenced.
CN102838874A discloses an asphalt modifier, modified asphalt and an asphalt mixture. The high-viscosity asphalt modifier comprises waste tire rubber powder, polyethylene waste, a styrene-butadiene-styrene block copolymer, a styrene-isoprene-styrene block copolymer, terpene resin, solvent oil, alcohol ether carboxylate and the like. The modified asphalt prepared by the modifier has better high and low temperature performances and water stability. But the used waste tire rubber powder still has the problems of poor compatibility with asphalt and insufficient ageing resistance.
CN 101177534A discloses a high-viscosity asphalt modifier. The high-viscosity asphalt modifier is composed of a thermoplastic elastomer, a rubber polymer, thermoplastic resin, a vulcanizing agent and the like. The high-viscosity asphalt modifier has wide sources and simple production process, but has the problem of early crosslinking of the thermoplastic elastomer, which is not favorable for uniform dispersion of the high-viscosity asphalt modifier in asphalt.
In summary, the prior art can improve the viscosity and the adhesiveness of asphalt to a certain extent, but has the problems of inconvenient use, premature crosslinking of polymer, poor compatibility of polymer and insufficient anti-aging performance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an anti-aging high-viscosity modified asphalt additive and a preparation method thereof. The high-viscosity modified asphalt additive is developed to improve the viscosity of asphalt, is convenient to use and has better anti-aging performance. Another object of the present invention is to improve the compatibility and uniform dispersibility between the additive and the asphalt.
The invention provides an anti-aging high-viscosity modified asphalt additive which comprises the following raw material components in parts by weight:
SBS: 100 parts of (A);
petroleum resin: 20-40 parts of a solvent;
aromatic oil: 10-40 parts;
stabilizers and their coatings: 5-8 parts;
anti-aging agent: 1-4 parts;
the stabilizer and the coating thereof are granular, the diameter of the granules is 100-150 micrometers, and the thickness of the coating particle wall material is 3-6 micrometers. The weight ratio of the coating to the stabilizer is (2-7): 1, preferably (3-5): 1.
the coating is surface-modified silicon dioxide, and the surface-modified silicon dioxide is preferably organosilane-modified silicon dioxide. The organosilane is one or more of phenyltrimethoxysilane, phenyltriethoxysilane, phenyldichlorosilane and phenyltrichlorosilane.
The stabilizer is sulfur, preferably a mixture of sulfur and polysulfides. Wherein the proportion of sulfur and polysulfide is (1-3): 1. the polysulfide is one or more of diaryl disulfide, dimethyl disulfide and methyl ethyl disulfide.
The anti-aging agent may be a hindered phenol type antioxidant. The anti-aging agent is one or more of 2, 6-di-tert-butyl-p-cresol, p-tert-butyl catechol, 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphonate, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, isooctyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 4' -thiobis (6-tert-butyl-3-methylphenol), pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene.
The SBS has a linear structure and the molecular weight of the SBS is 5-25 ten thousand.
The petroleum resin is carbon five petroleum resin, and the softening point of the petroleum resin is 90-120 ℃.
The aromatic oil is a component rich in aromatic hydrocarbon, and the weight content of the aromatic hydrocarbon is 40-80%. The extract oil can be derived from the extraction oil of the lubricant base oil in the solvent refining process, such as furfural refined extract oil, phenol refined extract oil and the like.
The invention also provides a preparation method of the anti-aging high-viscosity modified asphalt additive, which comprises the following steps:
(1) preparing a stabilizer suspension;
(2) adding dilute hydrochloric acid into the stabilizer suspension, and then dropwise adding ethyl orthosilicate to obtain a stabilizer and a coating thereof;
(3) adding a stabilizer and a coating thereof and organosilane into an organic solvent for surface modification reaction, and cooling to obtain the surface-modified stabilizer and the coating thereof;
(4) and uniformly mixing SBS, petroleum resin, aromatic oil, the surface modified stabilizer, the surface modified coating thereof and the anti-aging agent, blending, extruding and granulating by an extruder to obtain the anti-aging high-viscosity modified asphalt additive.
In the step (1), the stabilizer suspension is prepared by shearing and dispersing the stabilizer in an aqueous solution of sodium dodecyl sulfate and gelatin. The weight ratio of the stabilizer, sodium dodecyl sulfate, gelatin and water is (3-10): (0.01-3): (0.5-5): 50, preferably (5-8): (0.05-1): (1-3): 50. the shearing rotating speed is 3000-5000 rpm, and the time is 1-2 h.
The stabilizer is sulfur, preferably a mixture of sulfur and polysulfides. Wherein the proportion of sulfur to polysulfide is (1-3): 1.
in the step (2), the concentration of the dilute hydrochloric acid in the solution is 0.07-0.14 mol/L, preferably 0.09-0.10 mol/L.
And (3) dropwise adding tetraethoxysilane, stirring at a certain temperature for reaction, filtering, washing and drying to obtain the stabilizer and the coating thereof. The stirring temperature is 50-60 ℃, the stirring speed is 300-400 rpm, and the stirring time is 2-4 h. The weight ratio of the ethyl orthosilicate to the stabilizer is (2-7): 1, preferably (3-5): 1. the filtration, washing and drying can adopt the conventional method. The washing can be carried out by using solvents such as deionized water, ethanol and the like, and the drying is carried out to volatilize the solvents, wherein the drying temperature can be 50-80 ℃, and the drying time can be 3-5 h.
In the step (3), the surface modification reaction is performed under a heating reflux condition. The reaction temperature is 60-80 ℃, and the reaction time is 1-3 h.
In the step (3), after cooling, filtering, washing and drying are carried out to obtain the surface-modified stabilizer and the coating thereof. The filtration, washing and drying can be carried out by adopting a conventional method, the washing can be carried out by using solvents such as ethanol, the drying can be carried out to volatilize the solvents, the drying temperature can be 50-80 ℃, and the drying time can be 3-5 h.
In the step (3), the weight ratio of the stabilizer and the coating thereof, the organosilane and the organic solvent is 1: (0.01-0.15): (10-30), preferably 1: (0.08-0.12): (10-30), and the organic solvent is preferably one or more of xylene, toluene, cyclohexanone, chlorobenzene and pyridine.
In step (4), the extrusion is performed in an extruder. The extruder may be a conventionally used extruder. Because the extrudate contains the stabilizer and the coating particles thereof, the extrusion temperature is preferably 110-140 ℃ in order to avoid damaging the stabilizer and the coating particles thereof in the extrusion process. Preferably a screw extruder, and the rotating speed of the screw is 30-150 r/min. Further preferred is a twin-screw extruder, the two screws being parallel to each other in the barrel. The temperature in the barrel of the extruder is preferably controlled by multiple sections, for example, the barrel of the extruder can be divided into eight temperature sections, and the specific operating conditions are as follows: a first section is 110-120 ℃; the second section is 115-125 ℃; three sections are 120-130 ℃; the temperature of the fourth section is 120-130 ℃; five sections are 125-135 ℃; six sections are 130-140 ℃; seven sections are 125-135 ℃; eight sections are 120-130 ℃.
Compared with the prior art, the anti-aging high-viscosity modified asphalt additive and the preparation method thereof have the following advantages:
(1) the stabilizer is coated and then added into the high-viscosity modified asphalt additive, so that the method is convenient to use, avoids the step of adding the stabilizer additionally, separates the stabilizer from SBS, avoids the advanced crosslinking of SBS, and is beneficial to the uniform dispersion of the high-viscosity additive in the asphalt. Under the synergistic action of sulfur and polysulfide, the modified asphalt has better stability and dispersibility.
(2) The stabilizing agent and the capsule wall material of the coating thereof are silicon dioxide modified by organosilane, not only play a role in isolation, but also can increase the anti-aging performance, and can improve the problem of poor aging resistance of the drainage pavement prepared by using the high-viscosity asphalt additive under the synergistic action of the stabilizing agent and the anti-aging agent. The surface of the capsule wall material silicon dioxide is modified by macromolecular organosilane, and the modified capsule wall material silicon dioxide has good compatibility with asphalt.
(3) The anti-aging high-viscosity modified asphalt additive can obviously improve the viscosity of asphalt and enhance the cohesiveness of the asphalt, not only can be directly added into the asphalt to prepare the high-viscosity modified asphalt, but also can be added in the process of mixing the mixture, and has convenient construction and simple use.
Detailed Description
The technical solutions of the present invention are further described below by way of examples, which are not intended to limit the present invention.
Example 1
(1) 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide, 0.05 part by weight of sodium dodecylsulfate and 1 part by weight of gelatin were added to 50 parts by weight of the aqueous solution, and sheared at 3000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 15 parts by weight of tetraethoxysilane, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 0.8 part by weight of phenyl trimethoxy silane into 100 parts by weight of toluene, carrying out surface modification reaction for 1h at 60 ℃, cooling, filtering, washing with ethanol, and drying for 3h at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of surface modified stabilizer and coating thereof (particle diameter is 137 micrometers, wall material thickness is 3.3 micrometers) and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, and then carrying out blending extrusion and granulation by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Example 2
(1) 3 parts by weight of sulfur, 2 parts by weight of dimethyl disulfide, 0.05 part by weight of sodium dodecyl sulfate and 3 parts by weight of gelatin were added to 50 parts by weight of the aqueous solution, and the mixture was sheared at 4000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then 24 parts by weight of ethyl orthosilicate is dropwise added, stirred and reacted for 3 hours at 55 ℃ and 350 rpm, filtered after cooling, washed by deionized water, and dried for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 1 part by weight of phenyl triethoxy silane into 200 parts by weight of toluene, carrying out surface modification reaction for 1h at 70 ℃, cooling, filtering, washing with ethanol, and drying for 4h at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 15 ten thousand), 30 parts by weight of carbon five petroleum resin (softening point is 100 ℃), 30 parts by weight of aromatic oil (aromatic hydrocarbon content is 60 wt%), 7 parts by weight of surface-modified stabilizer and coating thereof (particle diameter is 125 micrometers, wall material thickness is 5.6 micrometers), and 3 parts by weight of 4,4' -thiobis (6-tert-butyl-3-methylphenol), blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: a first stage is 115 ℃; the second section is 120 ℃; the third section is 125 ℃; the fourth stage is 125 ℃; the fifth section is 130 ℃; the six sections are 135 ℃; the seven sections are 130 ℃; the eight sections are 125 ℃, and the rotating speed of the screw is 80 r/min.
Example 3
(1) 6 parts by weight of sulfur, 2 parts by weight of ethyldisulfide, 0.08 part by weight of sodium dodecylsulfate and 1 part by weight of gelatin were added to 50 parts by weight of an aqueous solution, and sheared at 5000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.10 mol/L. And then, dropwise adding 32 parts by weight of ethyl orthosilicate, stirring and reacting for 3 hours at 60 ℃ and 350 rpm, cooling, filtering, washing with deionized water, and drying for 5 hours at 60 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 1 part by weight of phenyl dichlorosilane into 300 parts by weight of toluene, carrying out surface modification reaction for 2 hours at 75 ℃, cooling, filtering, washing with ethanol, and drying for 5 hours at 60 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (with the molecular weight of 20 ten thousand), 20 parts by weight of carbon five petroleum resin (with the softening point of 110 ℃), 40 parts by weight of aromatic oil (with the content of aromatic hydrocarbon of 80 wt%), 8 parts by weight of stabilizer after surface modification and coating thereof (with the particle diameter of 110 micrometers and the wall material thickness of 4.2 micrometers) and 4 parts by weight of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate, blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first stage is 120 ℃; the second section is 125 ℃; the third section is 130 ℃; the fourth stage is 130 ℃; the fifth section is 135 ℃; the six sections are 140 ℃; the seven sections are 135 ℃; the eight sections are at 130 ℃, and the rotating speed of the screw is 120 r/min.
Example 4
The only difference from example 1 is that sulfur alone is used as a stabilizer. The preparation process comprises the following steps:
(1) 5 parts by weight of sulfur, 0.05 part by weight of sodium dodecyl sulfate and 1 part by weight of gelatin are added into 50 parts by weight of aqueous solution, and the mixture is sheared for 1 hour at the rotating speed of 3000 rpm to prepare the stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 15 parts by weight of ethyl orthosilicate, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 0.8 part by weight of phenyl trimethoxy silane into 100 parts by weight of toluene, carrying out surface modification reaction for 1h at 60 ℃, cooling, filtering, washing with ethanol, and drying for 3h at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of surface modified stabilizer and coating thereof (particle diameter is 139 micrometers, wall material thickness is 3.2 micrometers), and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first stage is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 1
The difference from example 1 is only the use of polysulfide alone as stabilizer. The preparation process comprises the following steps:
(1) 5 parts by weight of a diaryl disulfide, 0.05 part by weight of sodium dodecylsulfate and 1 part by weight of gelatin were added to 50 parts by weight of an aqueous solution, and sheared at 3000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 15 parts by weight of ethyl orthosilicate, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 0.8 part by weight of phenyl trimethoxy silane into 100 parts by weight of toluene, carrying out surface modification reaction for 1 hour at 60 ℃, cooling, filtering, washing with ethanol, and drying for 3 hours at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of surface-modified stabilizer and coating thereof (particle diameter is 134 micrometers, wall material thickness is 3.4 micrometers), and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 2
The only difference is that the stabilizer and its coating are not surface-modified, as in example 1. The preparation process comprises the following steps:
(1) 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide, 0.05 part by weight of sodium dodecylsulfate and 1 part by weight of gelatin were added to 50 parts by weight of the aqueous solution, and sheared at 3000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 15 parts by weight of ethyl orthosilicate, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of sulfur-coated stabilizer and its coating (particle diameter is 137 micrometers, wall material thickness is 3.3 micrometers) and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, and then carrying out blending extrusion and granulation by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 3
The only difference from example 1 is that the stabilizer is uncoated. The preparation process comprises the following steps:
uniformly mixing 100 parts by weight of SBS (with the molecular weight of 10 ten thousand), 40 parts by weight of carbon-five petroleum resin (with the softening point of 95 ℃), 20 parts by weight of aromatic oil (with the content of aromatic hydrocarbon of 40 wt%), 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, and then carrying out blending extrusion and granulation by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 4
The only difference from example 1 is that no stabilizer was added. The preparation process comprises the following steps:
uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%) and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, and then carrying out blending extrusion and granulation by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth stage is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 5
The difference from example 1 is only the stabilizer and its coating particles and the wall material thickness. The preparation process comprises the following steps:
(1) 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide, 0.05 part by weight of sodium dodecylsulfate and 1 part by weight of gelatin were added to 50 parts by weight of the aqueous solution, and sheared at 12000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 13 parts by weight of tetraethoxysilane, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 0.8 part by weight of phenyl trimethoxy silane into 100 parts by weight of toluene, carrying out surface modification reaction for 1 hour at 60 ℃, cooling, filtering, washing with ethanol, and drying for 3 hours at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of surface modified stabilizer and coating thereof (particle diameter is 43 micrometers, wall material thickness is 1.5 micrometers), and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 110 ℃; the second section is 115 ℃; the third section is 120 ℃; the fourth section is 120 ℃; the fifth section is 125 ℃; the six sections are 130 ℃; the seven sections are 125 ℃; the eight sections are 120 ℃, and the rotating speed of the screw is 50 r/min.
Comparative example 6
The difference from example 1 is only in the extrusion temperature of the extruder. The preparation process comprises the following steps:
(1) 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide, 0.05 part by weight of sodium dodecyl sulfate and 1 part by weight of gelatin were added to 50 parts by weight of the aqueous solution, and the mixture was sheared at 3000 rpm for 1 hour to prepare a stabilizer suspension.
(2) Dilute hydrochloric acid was added to the stabilizer suspension to maintain the hydrochloric acid concentration at 0.09 mol/L. And then dropwise adding 15 parts by weight of ethyl orthosilicate, stirring and reacting for 2 hours at 50 ℃ and 300 rpm, cooling, filtering, washing with deionized water, and drying for 3 hours at 50 ℃ to obtain the stabilizer and the coating thereof.
(3) Adding 10 parts by weight of stabilizer and coating thereof and 0.8 part by weight of phenyl trimethoxy silane into 100 parts by weight of toluene, carrying out surface modification reaction for 1 hour at 60 ℃, cooling, filtering, washing with ethanol, and drying for 3 hours at 50 ℃ to obtain the surface-modified stabilizer and coating thereof.
(4) Uniformly mixing 100 parts by weight of SBS (molecular weight is 10 ten thousand), 40 parts by weight of carbon five petroleum resin (softening point is 95 ℃), 20 parts by weight of aromatic oil (aromatic hydrocarbon content is 40 wt%), 5 parts by weight of surface-modified stabilizer and coating thereof (particle diameter is 137 micrometers, wall material thickness is 3.3 micrometers), and 2 parts by weight of 2, 6-di-tert-butyl-p-cresol, blending, extruding and granulating by a double-screw extruder to obtain the anti-aging high-viscosity modified asphalt additive. The extruder operating conditions were: the first section is 150 ℃; the second section is 155 ℃; the third section is 160 ℃; the fourth stage is 160 ℃; the fifth section is 160 ℃; the six sections are 160 ℃; the seven sections are 160 ℃; the eight sections are 160 ℃, and the rotating speed of the screw is 50 r/min.
Test example
The anti-aging high-viscosity modified asphalt additive was added in an amount of 12 parts by weight to 100 parts by weight of molten base asphalt (vacuum residue, 25 ℃ penetration 711/10 mm), and the mixture was uniformly dispersed in the base asphalt by high-speed shearing at 175 ℃ for 1 hour and stirring at the same temperature for 0.5 hour, and the obtained high-viscosity modified asphalt was tested and the results are shown in Table 1. Wherein the thin film oven test is performed according to the standard GB/T5304-2001.
TABLE 1 Properties of base asphalts and modified asphalts obtained in examples and comparative examples
As can be seen from the above table results: the modified asphalt prepared by using the anti-aging high-viscosity modified asphalt additive in the examples 1 to 4 has high viscosity and good storage stability, which indicates that the modified asphalt has good dispersibility and uniformity. And under the synergistic action of sulfur and polysulfide, the modified asphalt in the example 1 has better stability and dispersibility than the modified asphalt in the example 4. Meanwhile, the modified asphalt provided by the invention has good ageing resistance.
Claims (26)
1. The anti-aging high-viscosity modified asphalt additive is characterized by comprising the following raw material components in parts by weight:
SBS: 100 parts of a binder;
petroleum resin: 20-40 parts of a solvent;
aromatic oil: 10-40 parts;
stabilizers and their coatings: 5-8 parts;
anti-aging agent: 1-4 parts;
wherein the stabilizer and the coating thereof are granular, the diameter of the granules is 100-150 microns, and the thickness of the coating material granule wall material is 3-6 microns;
the stabilizer is a mixture of sulfur and polysulfide; the coating is silicon dioxide modified by organosilane;
the ratio of the sulfur to the polysulfide is (1-3): 1; the polysulfide is one or more of diaryl disulfide, dimethyl disulfide and methyl ethyl disulfide.
2. The anti-aging high-viscosity modified asphalt additive as claimed in claim 1, wherein the weight ratio of the coating to the stabilizer is (2-7): 1.
3. the anti-aging high-viscosity modified asphalt additive as claimed in claim 2, wherein the weight ratio of the coating to the stabilizer is (3-5): 1.
4. the additive for anti-aging high-viscosity modified asphalt as claimed in claim 1, wherein the organosilane is one or more of phenyltrimethoxysilane, phenyltriethoxysilane, phenyldichlorosilane and phenyltrichlorosilane.
5. The additive for anti-aging high-viscosity modified asphalt according to claim 1, wherein the anti-aging agent is a hindered phenol type antioxidant.
6. The additive for anti-aging high-viscosity modified asphalt according to claim 5, the anti-aging agent is one or more of 2, 6-di-tert-butyl-p-cresol, p-tert-butyl catechol, 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphonate, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, isooctyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 4' -thiobis (6-tert-butyl-3-methylphenol), pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene.
7. The additive for the anti-aging high-viscosity modified asphalt as claimed in claim 1, wherein the SBS has a linear structure and a molecular weight of 5-25 ten thousand.
8. The additive for the anti-aging high-viscosity modified asphalt as claimed in claim 1, wherein the petroleum resin is a hydrocarbon penta petroleum resin, and the softening point of the hydrocarbon penta petroleum resin is 90 ℃ to 120 ℃.
9. The additive for anti-aging high-viscosity modified asphalt as claimed in claim 1, wherein the aromatic oil is a component rich in aromatic hydrocarbon, and the weight content of the aromatic hydrocarbon is 40-80%.
10. The additive for anti-aging high-viscosity modified asphalt according to claim 9, wherein the aromatic oil is derived from an extract oil of a lubricant base oil during a solvent refining process.
11. The additive for the anti-aging high-viscosity modified asphalt according to claim 10, wherein the aromatic oil is at least one of furfural refined extract oil and phenol refined extract oil.
12. The preparation method of the anti-aging high-viscosity modified asphalt additive as claimed in any one of claims 1 to 11, which is characterized by comprising the following steps:
(1) preparing a stabilizer suspension;
(2) adding dilute hydrochloric acid into the stabilizer suspension, and then dropwise adding ethyl orthosilicate to obtain a stabilizer and a coating thereof;
(3) adding a stabilizer and a coating thereof and organic silane into an organic solvent for surface modification reaction, and cooling to obtain a surface-modified stabilizer and a coating thereof;
(4) and uniformly mixing SBS, petroleum resin, aromatic oil, the surface modified stabilizer, the surface modified coating thereof and the anti-aging agent, blending, extruding and granulating by an extruder to obtain the anti-aging high-viscosity modified asphalt additive.
13. The preparation method according to claim 12, wherein in the step (1), the stabilizer suspension is prepared by shearing and dispersing a stabilizer in an aqueous solution of sodium dodecyl sulfate and gelatin, and the weight ratio of the stabilizer to the sodium dodecyl sulfate to the gelatin to the water is (3-10): (0.01-3): (0.5-5): 50.
14. the preparation method according to claim 13, wherein the weight ratio of the stabilizer, the sodium dodecyl sulfate, the gelatin and the water is (5-8): (0.05-1): (1-3): 50.
15. the method according to claim 12, wherein the stabilizer is a mixture of sulfur and polysulfide in a ratio of (1-3): 1.
16. the method according to claim 12, wherein in the step (2), the concentration of the dilute hydrochloric acid in the solution is 0.07 to 0.14 mol/L.
17. The method according to claim 16, wherein in the step (2), the concentration of the dilute hydrochloric acid in the solution is 0.09 to 0.10 mol/L.
18. The preparation method of claim 12, wherein the tetraethoxysilane is dropwise added in the step (2), and then the mixture is stirred and reacted at a certain temperature, filtered, washed and dried to obtain the stabilizer and the coating thereof, wherein the stirring temperature is 50 ℃ to 60 ℃, the stirring speed is 300 rpm to 400 rpm, and the stirring time is 2 to 4 hours.
19. The preparation method according to claim 12, wherein the weight ratio of the tetraethoxysilane to the stabilizer in the step (2) is (2-7): 1.
20. the preparation method according to claim 19, wherein the weight ratio of the tetraethoxysilane to the stabilizer in the step (2) is (3-5): 1.
21. the preparation method of claim 12, wherein the surface modification reaction in the step (3) is performed under a heating reflux condition, and the reaction temperature is 60 ℃ to 80 ℃ and the reaction time is 1 to 3 hours.
22. The method for preparing the anti-static coating of the rubber material, as claimed in claim 12, wherein the weight ratio of the stabilizer and the coating thereof, the organosilane and the organic solvent in the step (3) is 1: (0.01-0.15): (10-30).
23. The method for preparing the anti-static coating of the rubber material as claimed in claim 22, wherein the weight ratio of the stabilizer and the coating thereof, the organosilane and the organic solvent in the step (3) is 1: (0.08-0.12): (10-30).
24. The method according to claim 12, wherein the extruding in the step (4) is performed in an extruder, and the extruding temperature is 110 to 140 ℃.
25. The method according to claim 24, wherein the extruder is a screw extruder, and the rotation speed of the screw is 30 to 150 r/min.
26. The preparation method of claim 24 or 25, wherein the extruder is a twin-screw extruder, two screws are parallel to each other in a barrel, the temperature in the barrel of the extruder is controlled by multiple stages, the barrel of the extruder is divided into eight temperature stages, and the specific operating conditions are as follows: a first section is 110-120 ℃; a second section is 115-125 ℃; three sections are 120-130 ℃; the temperature of the fourth section is 120-130 ℃; five sections are 125-135 ℃; six sections are 130-140 ℃; seven sections are 125-135 ℃; eight sections are 120-130 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040860.7A CN112745688B (en) | 2019-10-30 | 2019-10-30 | Anti-aging high-viscosity modified asphalt additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040860.7A CN112745688B (en) | 2019-10-30 | 2019-10-30 | Anti-aging high-viscosity modified asphalt additive and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112745688A CN112745688A (en) | 2021-05-04 |
| CN112745688B true CN112745688B (en) | 2022-07-12 |
Family
ID=75640292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911040860.7A Active CN112745688B (en) | 2019-10-30 | 2019-10-30 | Anti-aging high-viscosity modified asphalt additive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112745688B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591630A (en) * | 2022-04-01 | 2022-06-07 | 宁夏鑫睿途道路工程技术有限公司 | Asphalt modifier and preparation method thereof |
| CN115160805B (en) * | 2022-06-30 | 2023-04-11 | 烟台市公路事业发展中心 | High-viscosity emulsified asphalt and preparation method thereof |
| CN115819843B (en) * | 2022-11-16 | 2024-03-22 | 河海大学 | Warm high-viscosity asphalt modifier and preparation method thereof |
| CN118290893B (en) * | 2024-06-03 | 2024-10-01 | 上海宝新特种沥青混凝土有限公司 | Low-temperature anti-cracking colored emulsified asphalt and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554313A (en) * | 1982-06-10 | 1985-11-19 | Societe Anonyme Dite: Elf France | Process for preparing bitumen-polymer compositions, application of these compositions of the obtention of coverings and mother solution of polymer usable for the obtention of the said compositions |
| CN105037803A (en) * | 2015-06-06 | 2015-11-11 | 青岛科技大学 | Preparation method of composite double-layer-film coated sulfur microcapsule |
| CN105037802A (en) * | 2015-05-31 | 2015-11-11 | 青岛科技大学 | Preparation method of silicon-dioxide-coated sulfur microcapsules |
| CN108395710A (en) * | 2017-02-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of anti-aging high adhered modification asphalt additive and preparation method thereof |
| CN108602038A (en) * | 2015-09-16 | 2018-09-28 | 道达尔销售服务公司 | Method for preparing microcapsules by double lotions |
-
2019
- 2019-10-30 CN CN201911040860.7A patent/CN112745688B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554313A (en) * | 1982-06-10 | 1985-11-19 | Societe Anonyme Dite: Elf France | Process for preparing bitumen-polymer compositions, application of these compositions of the obtention of coverings and mother solution of polymer usable for the obtention of the said compositions |
| CN105037802A (en) * | 2015-05-31 | 2015-11-11 | 青岛科技大学 | Preparation method of silicon-dioxide-coated sulfur microcapsules |
| CN105037803A (en) * | 2015-06-06 | 2015-11-11 | 青岛科技大学 | Preparation method of composite double-layer-film coated sulfur microcapsule |
| CN108602038A (en) * | 2015-09-16 | 2018-09-28 | 道达尔销售服务公司 | Method for preparing microcapsules by double lotions |
| CN108395710A (en) * | 2017-02-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of anti-aging high adhered modification asphalt additive and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112745688A (en) | 2021-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112745688B (en) | Anti-aging high-viscosity modified asphalt additive and preparation method thereof | |
| CN110922769B (en) | Direct-vat-set high-viscosity asphalt modifier and preparation method thereof | |
| CN108395710B (en) | Anti-aging high-viscosity modified asphalt additive and preparation method thereof | |
| CN111286207A (en) | Modified asphalt composition for warm-mix thin-layer overlay and preparation method thereof | |
| CN107446364A (en) | A kind of rubber asphalt and preparation method thereof | |
| CN108059839B (en) | Anti-aging modified asphalt and preparation method thereof | |
| CN110922768A (en) | Direct-throwing type high-viscosity asphalt modifier and preparation method thereof | |
| CN107082591B (en) | Paving material for municipal construction and building engineering and design method thereof | |
| CN108395714B (en) | High-viscosity asphalt additive with ageing resistance and preparation method thereof | |
| CN109534734B (en) | Anti-freezing micro-surfacing maintenance material and preparation method thereof | |
| CN112745627B (en) | High-viscosity asphalt additive and preparation method thereof | |
| CN108395709B (en) | High-viscosity modified asphalt additive with aging resistance and preparation method thereof | |
| CN108395140B (en) | High-modulus asphalt concrete additive and preparation method thereof | |
| CN112745530B (en) | High-viscosity asphalt stabilizer, additive and preparation method thereof | |
| CN110982094B (en) | Reactive solvent and application | |
| CN106589986A (en) | Modified asphalt and preparation method and application thereof | |
| KR100777492B1 (en) | Styrene-based sement composition | |
| CN116925699A (en) | Low-temperature modified asphalt waterproof coiled material sizing composition, low-temperature modified asphalt waterproof coiled material sizing, and preparation method and application thereof | |
| CN111205661B (en) | Rubber asphalt modifier, modified asphalt, asphalt mixture, and preparation and application thereof | |
| CN108395596B (en) | Anti-rut agent with anti-aging performance and preparation method thereof | |
| CN114381050A (en) | Apex composition applying metacarpal white bonding system, preparation and application | |
| CN115044340A (en) | Antistatic polyurethane glue and preparation method and application thereof | |
| CN104292523B (en) | The method of instantaneous increase rubber in conjunction with glue content and the rubber item of preparation | |
| CN108395599B (en) | Asphalt concrete additive and preparation method thereof | |
| CN114230226A (en) | High-density thin-layer asphalt pavement additive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231027 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
|
| TR01 | Transfer of patent right |