CN116102895A - Ageing-resistant high-viscosity modified asphalt and preparation method thereof - Google Patents
Ageing-resistant high-viscosity modified asphalt and preparation method thereof Download PDFInfo
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- CN116102895A CN116102895A CN202310260922.5A CN202310260922A CN116102895A CN 116102895 A CN116102895 A CN 116102895A CN 202310260922 A CN202310260922 A CN 202310260922A CN 116102895 A CN116102895 A CN 116102895A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 108
- 230000032683 aging Effects 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title description 11
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 41
- 239000003381 stabilizer Substances 0.000 claims abstract description 31
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims abstract description 21
- 239000003208 petroleum Substances 0.000 claims abstract description 20
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000006184 cosolvent Substances 0.000 claims abstract description 18
- 229920001400 block copolymer Polymers 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 12
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 25
- 239000003963 antioxidant agent Substances 0.000 claims description 12
- 229920006132 styrene block copolymer Polymers 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005984 hydrogenation reaction Methods 0.000 claims description 9
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 8
- 239000004606 Fillers/Extenders Substances 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 7
- 239000010692 aromatic oil Substances 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims 1
- 230000003993 interaction Effects 0.000 abstract description 4
- 239000000306 component Substances 0.000 description 50
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011800 void material 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
-
- 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)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention provides an aging-resistant high-viscosity modified asphalt which is prepared from the following raw materials: 100 parts by weight of petroleum asphalt; 4 to 7 parts by weight of a block copolymer of styrene-butadiene-styrene; 3 to 5 parts by weight of a block copolymer of styrene-hydrogenated butadiene-styrene; the anti-aging component 1 is 1 to 4 weight parts; 0.4 to 0.6 weight part of anti-aging component 2; 0.3 to 0.7 weight parts of viscosity reducing component; 2 to 6 parts by weight of cosolvent; 0.2 to 0.4 part by weight of stabilizer. Compared with the prior art, the aging-resistant high-viscosity modified asphalt provided by the invention adopts specific components with specific contents to realize better overall interaction, and the obtained aging-resistant high-viscosity modified asphalt has excellent aging resistance and gives consideration to other indexes such as toughness and toughness.
Description
Technical Field
The invention relates to the technical field of high-viscosity modified asphalt, in particular to aging-resistant high-viscosity modified asphalt and a preparation method thereof.
Background
The high-viscosity modified asphalt takes road petroleum asphalt as a main body, various modified materials are added to form special asphalt, and the special asphalt has the greatest characteristic that the dynamic viscosity at 60 ℃ is high and is generally more than 20000Pa.s; the method is often applied to the field of construction of drainage asphalt pavement and maintenance of ultrathin overlay roads. Because the drainage asphalt pavement has larger gaps, the drainage asphalt pavement has good drainage, noise reduction and skid resistance, but meanwhile, the structural characteristic of the large void ratio also causes the contact area between asphalt and air and ultraviolet light to be increased, the aging of the asphalt is accelerated, and the service life of the pavement is shortened. In addition, a large amount of modified materials are often added into the high-viscosity asphalt to improve the viscosity, and in the production, mixing and use processes, degradation and other attenuation reactions of the high-viscosity asphalt products are often caused under the action of hot oxygen ultraviolet light and the like, so that the aging resistance of the high-viscosity asphalt products is insufficient, and other indexes of the high-viscosity asphalt are simultaneously deteriorated.
At present, the following problems are common in the high-viscosity asphalt in the prior art: (1) The heat and oxygen aging resistance and ultraviolet aging resistance are weak in the production and use process, so that the aging is serious; (2) The high-temperature storage is unstable, and the phase separation of the polymer and the asphalt is easy to generate; (3) The insufficient viscosity and toughness of the asphalt cement cause poor impact resistance and scattering performance of the pavement, and the pavement is generally affected by peeling, pits and other diseases after traffic operation; (4) The high-viscosity additive is high in price, so that the material cost is greatly increased, the popularization is difficult, the suitability of the additive and any asphalt is not necessarily good, the final performance is uneven, in addition, other high-viscosity modified asphalt core components are often high-molecular polymers, the doping amount is large, and the production cost is greatly increased; (5) high-temperature viscosity is large, resulting in poor workability. Therefore, how to solve the problem of poor ageing resistance of the (1) item and the defects of the (2), (3), (4) and (5) item of the existing high-viscosity asphalt, and provide a high-viscosity asphalt product with excellent comprehensive performance and outstanding ageing resistance, which is a technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the invention aims to provide an anti-aging high-viscosity modified asphalt and a preparation method thereof.
The invention provides an aging-resistant high-viscosity modified asphalt which is prepared from the following raw materials:
petroleum asphalt: 100 parts by weight;
block copolymers of styrene-butadiene-styrene: 4 to 7 parts by weight;
block copolymers of styrene-hydrogenated butadiene-styrene: 3 to 5 parts by weight;
anti-aging component 1:1 to 4 parts by weight;
anti-aging component 2:0.4 to 0.6 weight portions;
viscosity reducing component: 0.3 to 0.7 weight portions;
cosolvent: 2 to 6 parts by weight;
stabilizing agent: 0.2 to 0.4 weight portion.
Preferably, the petroleum asphalt has a gum content of not less than 20wt%, an aromatic content of not less than 40wt%, an asphaltene content of not more than 15wt% but not less than 8wt%, and a saturation content of not less than 10wt%.
Preferably, the block copolymer of styrene-butadiene-styrene is selected from one or more of Yueyang petrochemical 791SBS, yuehuang 7301SBS and Dushan petrochemical T161BSBS.
Preferably, the styrene-hydrogenated butadiene-styrene block copolymer is SEBS with a hydrogenation degree of 40-49%.
Preferably, the anti-aging component 1 is nano montmorillonite; the anti-aging component 2 is an antioxidant.
Preferably, the antioxidant is selected from antioxidant 1010 and/or antioxidant 246.
Preferably, the viscosity reducing component is selected from Shanghai Yingchuang warm mix and/or Weishiweike warm mix.
Preferably, the cosolvent is selected from one or more of Mantex extender, furun-reach aromatic oil and wire-reducing oil.
Preferably, the stabilizer is selected from the group consisting of a bosch stabilizer and/or a mid-full protection stabilizer.
The invention also provides a preparation method of the aging-resistant high-viscosity modified asphalt, which is characterized by comprising the following steps of:
heating petroleum asphalt to 170-185 ℃, adding a cosolvent, a styrene-butadiene-styrene block copolymer and a styrene-hydrogenated butadiene-styrene block copolymer, shearing at a high speed at 4000-6000 rpm for 5-15 min, adding an anti-aging component 1, continuously shearing for 25-35 min, stopping shearing, transferring to 500-700 rpm for common stirring, adding a stabilizer and an anti-aging component 2, stirring and developing for 3-4 h, finally adding a viscosity-reducing component, and continuously stirring and developing for 0.1-1 h to obtain the anti-aging high-viscosity modified asphalt.
The invention provides an aging-resistant high-viscosity modified asphalt which is prepared from the following raw materials: 100 parts by weight of petroleum asphalt; 4 to 7 parts by weight of a block copolymer of styrene-butadiene-styrene; 3 to 5 parts by weight of a block copolymer of styrene-hydrogenated butadiene-styrene; the anti-aging component 1 is 1 to 4 weight parts; 0.4 to 0.6 weight part of anti-aging component 2; 0.3 to 0.7 weight parts of viscosity reducing component; 2 to 6 parts by weight of cosolvent; 0.2 to 0.4 part by weight of stabilizer. Compared with the prior art, the aging-resistant high-viscosity modified asphalt provided by the invention adopts specific components with specific contents to realize better overall interaction, and the obtained aging-resistant high-viscosity modified asphalt has excellent aging resistance and gives consideration to other indexes such as toughness and toughness.
In addition, the preparation method provided by the invention has the advantages of simple process, mild and easily controlled conditions and wide application prospect.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent 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.
The invention provides an aging-resistant high-viscosity modified asphalt which is prepared from the following raw materials:
petroleum asphalt: 100 parts by weight;
block copolymers of styrene-butadiene-styrene: 4 to 7 parts by weight;
block copolymers of styrene-hydrogenated butadiene-styrene: 3 to 5 parts by weight;
anti-aging component 1:1 to 4 parts by weight;
anti-aging component 2:0.4 to 0.6 weight portions;
viscosity reducing component: 0.3 to 0.7 weight portions;
cosolvent: 2 to 6 parts by weight;
stabilizing agent: 0.2 to 0.4 weight portion.
In the invention, the aging-resistant high-viscosity modified asphalt is prepared from raw materials comprising petroleum asphalt, a styrene-butadiene-styrene block copolymer (SBS), a styrene-hydrogenated butadiene-styrene block copolymer (SEBS), an anti-aging component 1, an anti-aging component 2, a viscosity reducing component, a cosolvent and a stabilizer, and is preferably prepared from petroleum asphalt, a styrene-butadiene-styrene block copolymer (SBS), a styrene-hydrogenated butadiene-styrene block copolymer (SEBS), an anti-aging component 1, an anti-aging component 2, a viscosity reducing component, a cosolvent and a stabilizer.
In the invention, the petroleum asphalt is preferably matrix asphalt prepared by singly refining or mixing crude oil in south America and middle east; the gum content is preferably not less than 20wt%, the aromatic content is preferably not less than 40wt%, the asphaltene content is preferably not more than 15wt% but not less than 8wt%, and the saturated content is preferably not less than 10wt%. The source of the petroleum asphalt is not particularly limited, and commercially available products known to those skilled in the art may be used. In a preferred embodiment of the present invention, the petroleum asphalt is No. 70 base asphalt. In the present invention, the aging-resistant high viscosity modified asphalt comprises 100 parts by weight of petroleum asphalt.
In the present invention, the styrene-butadiene-styrene block copolymer is preferably selected from one or more of Yueyang petrochemical 791SBS, yuehuang 7301SBS and Dushan petrochemical T161BSBS, more preferably Yueyang petrochemical 791SBS, yuehuang 7301SBS or Dushan petrochemical T161BSBS. The source of the styrene-butadiene-styrene block copolymer is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. In the present invention, the aging-resistant high-viscosity modified asphalt comprises 4 to 7 parts by weight of a styrene-butadiene-styrene block copolymer, preferably 4 to 6 parts by weight.
In the present invention, the styrene-hydrogenated butadiene-styrene block copolymer is preferably SEBS having a hydrogenation degree of 40% to 49%, more preferably SEBS having a hydrogenation degree of 40% or SEBS having a hydrogenation degree of 49%. The source of the styrene-hydrogenated butadiene-styrene block copolymer is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. In the present invention, the aging-resistant high-viscosity modified asphalt includes 3 to 5 parts by weight of a styrene-hydrogenated butadiene-styrene block copolymer.
In the invention, the anti-aging component 1 is preferably nano montmorillonite; the anti-aging component 2 is preferably an antioxidant; the antioxidant is preferably selected from the group consisting of antioxidant 1010 and/or antioxidant 246, more preferably antioxidant 1010 or antioxidant 246. The invention selects the two anti-aging components, not only can realize the advantages of penetration ratio and residual ductility representation anti-aging performance in the traditional anti-aging performance representation, but also has excellent effect on the aspect of poor softening point before and after aging, and simultaneously has the advantages of improving the thermo-oxidative aging performance and the ultraviolet aging performance, thereby realizing the improvement of the comprehensive anti-aging performance of the product.
The source of the anti-aging component 1 is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. In the present invention, the aging-resistant high-viscosity modified asphalt comprises 1 to 4 parts by weight of the aging-resistant component 1, preferably 1 to 3 parts by weight.
The source of the anti-aging component 2 is not particularly limited in the present invention, and commercially available products of the above hindered phenol antioxidants known to those skilled in the art may be used. In the invention, the aging-resistant high-viscosity modified asphalt comprises 0.4 to 0.6 part by weight of the aging-resistant component 2.
In the present invention, the viscosity reducing component is preferably selected from Shanghai Yingzhuang warm mix agent and/or Weishi Weike warm mix agent, more preferably Shanghai Yingzhuang warm mix agent or Weishi Weike warm mix agent. The source of the viscosity reducing component is not particularly limited in the present invention, and commercially available products of the above-mentioned warm-mix agents, which are well known to those skilled in the art, may be used. In the present invention, the aging-resistant high viscosity modified asphalt includes 0.3 to 0.7 parts by weight of the viscosity-reducing component, preferably 0.3 to 0.6 parts by weight.
In the invention, the cosolvent is preferably selected from one or more of Mantex extender, furun-reach aromatic hydrocarbon oil and line-reducing oil, and more preferably is Mantex extender, furun-reach aromatic hydrocarbon oil or line-reducing wax oil. The source of the cosolvent is not particularly limited and commercially available commercial products known to those skilled in the art may be used in the present invention. In the present invention, the aging-resistant high-viscosity modified asphalt comprises 2 to 6 parts by weight of a cosolvent, preferably 3 to 6 parts by weight.
In the present invention, the stabilizer is preferably selected from a bosch stabilizer and/or a mid-full-protection stabilizer, more preferably a bosch stabilizer or a mid-full-protection stabilizer. The source of the stabilizer is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. In the present invention, the aging-resistant high viscosity modified asphalt comprises 0.2 to 0.4 parts by weight of a stabilizer, preferably 0.3 to 0.35 parts by weight.
The aging-resistant high-viscosity modified asphalt provided by the invention adopts specific components with specific content to realize better interaction of the whole, and the obtained aging-resistant high-viscosity modified asphalt has excellent aging resistance and gives consideration to other indexes such as viscosity toughness and toughness.
The invention also provides a preparation method of the aging-resistant high-viscosity modified asphalt, which is characterized by comprising the following steps of:
heating petroleum asphalt to 170-185 ℃, adding a cosolvent, a styrene-butadiene-styrene block copolymer and a styrene-hydrogenated butadiene-styrene block copolymer, shearing at a high speed for 5-15 min at a rotating speed of 4000-6000 rpm, then adding an anti-aging component 1, stopping shearing after continuing shearing for 25-35 min, transferring to 500-700 rpm for common stirring, adding a stabilizer and an anti-aging component 2, stirring and developing for 3-4 h, finally adding a viscosity-reducing component, and continuing stirring and developing for 0.1-1 h to obtain the anti-aging high-viscosity modified asphalt;
preferably, it is:
heating petroleum asphalt to 180 ℃, adding a cosolvent, a styrene-butadiene-styrene block copolymer and a styrene-hydrogenated butadiene-styrene block copolymer, shearing at a high speed at a rotation speed of 5000rpm for 10min, then adding an anti-aging component 1, continuously shearing for 30min, stopping shearing, transferring to 600rpm for common stirring, adding a stabilizer and an anti-aging component 2, stirring and developing for 3.5h, finally adding a viscosity-reducing component, and continuously stirring and developing for 0.5h to obtain the ageing-resistant high-viscosity modified asphalt.
The present invention is not particularly limited to the high-speed shearing apparatus, and a shearing machine known to those skilled in the art may be used.
In the present invention, the petroleum asphalt, the styrene-butadiene-styrene block copolymer (SBS), the styrene-hydrogenated butadiene-styrene block copolymer (SEBS), the anti-aging component 1, the anti-aging component 2, the viscosity reducing component, the cosolvent and the stabilizer are the same as those in the above technical scheme, and are not described herein again.
The preparation method provided by the invention has the advantages of simple process, mild and easily controlled conditions and wide application prospect.
The invention provides an aging-resistant high-viscosity modified asphalt which is prepared from the following raw materials: 100 parts by weight of petroleum asphalt; 4 to 7 parts by weight of a block copolymer of styrene-butadiene-styrene; 3 to 5 parts by weight of a block copolymer of styrene-hydrogenated butadiene-styrene; the anti-aging component 1 is 1 to 4 weight parts; 0.4 to 0.6 weight part of anti-aging component 2; 0.3 to 0.7 weight parts of viscosity reducing component; 2 to 6 parts by weight of cosolvent; 0.2 to 0.4 part by weight of stabilizer. Compared with the prior art, the aging-resistant high-viscosity modified asphalt provided by the invention adopts specific components with specific contents to realize better overall interaction, and the obtained aging-resistant high-viscosity modified asphalt has excellent aging resistance and gives consideration to other indexes such as toughness and toughness.
In addition, the preparation method provided by the invention has the advantages of simple process, mild and easily controlled conditions and wide application prospect.
In order to further illustrate the present invention, the following examples are provided. The raw materials used in the following examples of the present invention are all commercially available, wherein the manufacturer of nano montmorillonite is Zhejiang Feng Hong clay chemical industry Co.
Example 1
Heating 100 parts by weight of 70-grade matrix asphalt to 180 ℃, adding 4 parts by weight of Mantex extender, 6 parts by weight of Yueyang petrochemical 791SBS and 3 parts by weight of SEBS with the degree of hydrogenation of 49% in Zhongli technology, shearing at a high speed by using a shearing machine for 10min according to a rotation speed of 5000rpm, slowly adding 3 parts by weight of DK4 nano montmorillonite, continuously shearing for 30min, stopping shearing, transferring to common stirring, adding 0.3 part by weight of Boyue stabilizer, 0.6 part by weight of antioxidant 1010, stirring at 600rpm for 3.5h, adding 0.6 part by weight of Weishiweike warm-mix agent, and continuing stirring for 0.5h to obtain the aging-resistant high-viscosity modified asphalt.
Example 2
Heating 100 parts by weight of 70-grade matrix asphalt to 180 ℃, adding 6 parts by weight of Furun-reach aromatic oil, 4 parts by weight of Yuhuang 7301SBS and 5 parts by weight of SEBS with 40% of Zhongli technology hydrogenation degree, adopting a shearing machine to shear at a high speed for 10min according to a rotation speed of 5000rpm, slowly adding 1 part by weight of DK3 nano montmorillonite, continuing to shear for 30min, stopping shearing, transferring to common stirring, adding 0.35 part by weight of medium full-protection stabilizer, 0.4 part by weight of antioxidant 246, stirring at 600rpm for 3.5h, adding 0.3 part by weight of Shanghai Yingzhang warm-mix agent, and continuing to stir for 0.5h to obtain the aging-resistant high-viscosity modified asphalt.
Example 3
Heating 100 parts by weight of 70 # matrix asphalt to 180 ℃, adding 3 parts by weight of three-wire-reduced wax oil, 5 parts by weight of Dushanzi petrochemical T161BSBS and 4 parts by weight of SEBS with 40% of Zhongli technology hydrogenation degree, adopting a shearing machine to shear at a high speed for 10min according to a rotation speed of 5000rpm, slowly adding 2 parts by weight of DK4 nano montmorillonite, continuing to shear for 30min, stopping shearing, transferring to common stirring, adding 0.3 part by weight of Boyue stabilizer, 0.5 part by weight of antioxidant 1010, stirring at 600rpm for 3.5h, adding 0.5 part by weight of Weishi Ke warm-mix agent, and continuing to stir for 0.5h to obtain the aging-resistant high-viscosity modified asphalt.
Comparative example 1
Heating 100 parts by weight of matrix asphalt to 180 ℃, adding 4 parts by weight of Mantex extender, 6 parts by weight of Yueyang petrochemical 791SBS and 3 parts by weight of SEBS with the hydrogenation degree of 49%, shearing at a high speed by using a shearing machine according to a rotation speed of 5000rpm for 10min, slowly adding 3 parts by weight of DK4 nano montmorillonite, continuing to shear for 30min, stopping shearing, transferring to common stirring, adding 0.3 part by weight of Bow stabilizer, 0.6 part by weight of antioxidant 1010 and stirring at 600rpm for 4.0h to obtain the high-viscosity modified asphalt.
Comparative example 2
Heating 100 parts by weight of matrix asphalt to 180 ℃, adding 4 parts by weight of Mantex extender and 9 parts by weight of Yueyang petrochemical 791SBS, shearing at a high speed by a shearing machine according to a rotation speed of 5000rpm for 40min, transferring to common stirring, adding 0.3 part by weight of Boyue stabilizer, and stirring at 600rpm for 4.0h to obtain the high-viscosity modified asphalt.
The products provided in examples 1 to 3 and comparative examples 1 to 2 were examined for various properties, and the results are shown in tables 1 to 2.
Table 1 various performance data of the products provided in examples 1 to 3 and comparative examples 1 to 2
TABLE 2 zero shear viscosity test results for the products provided in example 1 and comparative example 1
As can be seen from Table 1, the raw materials, the proportions and the preparation process adopted by the invention can ensure that the compatibility of the raw materials is more excellent, the compatibility is better, the forward synergistic effect among the raw materials can be exerted, the ageing resistance of the obtained high-viscosity asphalt is obviously improved, the penetration ratio, the residual ductility and the softening point difference before and after ageing of the sample after ageing of the rotating film oven are obviously improved, and the influence of ultraviolet ageing on the sample provided by the invention is smaller than that of a comparison case after an ultraviolet ageing test (the smaller the change of the softening point is, the slower the ageing speed of the asphalt is indicated, and the better the ageing resistance of the asphalt is).
As is clear from tables 1 and 2, in example 1, in which the viscosity reducing component was added, the viscosity of the viscosity reducing component was reduced in shear at different shear stresses, although the macroscopic 175 ℃ viscosity index was not greatly changed, in the rheological point of view of the zero shear viscosity index, so that the difficulty in construction of example 1 was significantly reduced in practical construction works, compared with comparative example 1.
The invention provides an aging-resistant high-viscosity modified asphalt and a preparation method thereof, compared with the prior art:
firstly, the ageing resistance of the product in the prior art is characterized singly, and the ageing resistance can not be fed back truly only by the penetration ratio and the residual ductility, and on the basis of the two indexes, the softening point difference before and after ageing is increased, and the three indexes comprehensively reflect the ageing resistance of the product; secondly, the method for evaluating the ageing resistance of the high-viscosity asphalt has the advantages of thermal oxidation ageing and ultraviolet ageing, and the prior art is single or has only ultraviolet ageing or thermal ageing and the like, so that whether the product has real ageing resistance cannot be fed back truly; finally, the prior art emphasizes the ageing resistance, and has less attention to other indexes of the high-viscosity asphalt, and the index performance is not outstanding, while the invention mainly emphasizes the ageing resistance of the high-viscosity asphalt, and simultaneously gives consideration to other index performances of the high-viscosity asphalt, thereby providing a high-viscosity modified asphalt product with excellent comprehensive performance and outstanding ageing resistance.
In summary, the invention has the following beneficial effects:
(1) The invention has simple and uncomplicated raw material varieties, is convenient for industrialized application, and the viscosity-reducing component is added in the formula, thereby being beneficial to the construction workability of the high-viscosity asphalt and the control of the release of harmful gases, and being more environment-friendly and easy to popularize.
(2) According to the invention, through effective and reasonable collocation of various components, the ageing resistance of the high-viscosity asphalt is obviously improved, and the ageing resistance index of the high-viscosity asphalt after thermal oxidation ageing and ultraviolet ageing is represented: the penetration ratio, the residual ductility and the softening point difference are all obviously improved.
(3) Besides good ageing resistance, the invention has good performance on other key indexes related to the performance of the high-viscosity asphalt, and is high-viscosity modified asphalt with excellent comprehensive performance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The aging-resistant high-viscosity modified asphalt is characterized by being prepared from the following raw materials:
petroleum asphalt: 100 parts by weight;
block copolymers of styrene-butadiene-styrene: 4 to 7 parts by weight;
block copolymers of styrene-hydrogenated butadiene-styrene: 3 to 5 parts by weight;
anti-aging component 1:1 to 4 parts by weight;
anti-aging component 2:0.4 to 0.6 weight portions;
viscosity reducing component: 0.3 to 0.7 weight portions;
cosolvent: 2 to 6 parts by weight;
stabilizing agent: 0.2 to 0.4 weight portion.
2. The aging-resistant high-viscosity modified asphalt according to claim 1, wherein the petroleum asphalt has a gum content of not less than 20wt%, an aromatic content of not less than 40wt%, an asphaltene content of not more than 15wt% but not less than 8wt%, and a saturated content of not less than 10wt%.
3. The aging-resistant high-viscosity modified asphalt according to claim 1, wherein the block copolymer of styrene-butadiene-styrene is selected from one or more of Yueyang petrochemical 791SBS, yuehuang 7301SBS and Dushan petrochemical T161BSBS.
4. The aging-resistant high-viscosity modified asphalt according to claim 1, wherein the styrene-hydrogenated butadiene-styrene block copolymer is SEBS having a hydrogenation degree of 40% to 49%.
5. The aging-resistant high-viscosity modified asphalt according to claim 1, wherein the aging-resistant component 1 is nano montmorillonite; the anti-aging component 2 is an antioxidant.
6. The aging-resistant high viscosity modified asphalt according to claim 5, wherein the antioxidant is selected from antioxidant 1010 and/or antioxidant 246.
7. The aging-resistant high viscosity modified asphalt according to claim 1, wherein the viscosity-reducing component is selected from Shanghai Yingzhang warm mix and/or Weishi Weike warm mix.
8. The aging-resistant high-viscosity modified asphalt according to claim 1, wherein the cosolvent is one or more selected from the group consisting of a mantex extender, a fuseda aromatic oil and a line-reducing oil.
9. The ageing-resistant high-viscosity modified asphalt according to claim 1, wherein the stabilizer is selected from a bosch stabilizer and/or a medium full-protection stabilizer.
10. A method for preparing the aging-resistant high-viscosity modified asphalt according to any one of claims 1 to 9, comprising the steps of:
heating petroleum asphalt to 170-185 ℃, adding a cosolvent, a styrene-butadiene-styrene block copolymer and a styrene-hydrogenated butadiene-styrene block copolymer, shearing at a high speed at 4000-6000 rpm for 5-15 min, adding an anti-aging component 1, continuously shearing for 25-35 min, stopping shearing, transferring to 500-700 rpm for common stirring, adding a stabilizer and an anti-aging component 2, stirring and developing for 3-4 h, finally adding a viscosity-reducing component, and continuously stirring and developing for 0.1-1 h to obtain the anti-aging high-viscosity modified asphalt.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990563A (en) * | 2005-12-27 | 2007-07-04 | 上海群康沥青科技有限公司 | High viscosity modified asphalt for water draining pavement and preparation method thereof |
| CN102443239A (en) * | 2010-10-12 | 2012-05-09 | 中国石油化工股份有限公司 | Oil-resistant road asphalt modifier and preparation method thereof |
| US20150368470A1 (en) * | 2013-02-19 | 2015-12-24 | Jung Do HUH | Novel highly visco-elastic warm-mix modifier composition and their manufacturing method thereof; and compositions of virgin and recycled modified warm-mix asphalt concrete mixtures and their manufacturing method thereof |
| CN106243747A (en) * | 2016-08-02 | 2016-12-21 | 柳小军 | A kind of high and cold modified pitch and preparation method thereof |
| CN108504115A (en) * | 2018-04-20 | 2018-09-07 | 河海大学 | A kind of special high adhered modification pitch of drainage pavement and preparation method |
| CN108559283A (en) * | 2018-04-17 | 2018-09-21 | 广州大象超薄路面技术开发有限公司 | A kind of thin layer porous pavement modified asphalt composite |
| CN108587195A (en) * | 2018-04-17 | 2018-09-28 | 广州大象超薄路面技术开发有限公司 | A kind of high viscosity asphalt composition and its preparation method and application for OGFC thin overlay |
| CN109385106A (en) * | 2018-09-30 | 2019-02-26 | 广东粤运佳富实业有限公司 | Low viscous high performance modified bitumen of one kind and preparation method thereof |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN110982284A (en) * | 2019-11-11 | 2020-04-10 | 同济大学 | Anti-aging SEBS modified asphalt and preparation method thereof |
| CN112300586A (en) * | 2020-11-17 | 2021-02-02 | 山东京博石油化工有限公司 | SBS modified asphalt stabilizer and SBS modified asphalt |
| CN112409803A (en) * | 2020-11-10 | 2021-02-26 | 上海城建日沥特种沥青有限公司 | Modified asphalt raw material composition, modified asphalt and preparation method and application thereof |
| WO2021098798A1 (en) * | 2019-11-20 | 2021-05-27 | 江苏中路交通科学技术有限公司 | U-pave specialized modified asphalt, manufacturing method therefor, and use therefore |
| CN115160808A (en) * | 2022-08-04 | 2022-10-11 | 山东海韵沥青有限公司 | High-viscosity modified asphalt and preparation method thereof |
-
2023
- 2023-03-17 CN CN202310260922.5A patent/CN116102895B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990563A (en) * | 2005-12-27 | 2007-07-04 | 上海群康沥青科技有限公司 | High viscosity modified asphalt for water draining pavement and preparation method thereof |
| CN102443239A (en) * | 2010-10-12 | 2012-05-09 | 中国石油化工股份有限公司 | Oil-resistant road asphalt modifier and preparation method thereof |
| US20150368470A1 (en) * | 2013-02-19 | 2015-12-24 | Jung Do HUH | Novel highly visco-elastic warm-mix modifier composition and their manufacturing method thereof; and compositions of virgin and recycled modified warm-mix asphalt concrete mixtures and their manufacturing method thereof |
| CN106243747A (en) * | 2016-08-02 | 2016-12-21 | 柳小军 | A kind of high and cold modified pitch and preparation method thereof |
| CN108587195A (en) * | 2018-04-17 | 2018-09-28 | 广州大象超薄路面技术开发有限公司 | A kind of high viscosity asphalt composition and its preparation method and application for OGFC thin overlay |
| CN108559283A (en) * | 2018-04-17 | 2018-09-21 | 广州大象超薄路面技术开发有限公司 | A kind of thin layer porous pavement modified asphalt composite |
| CN108504115A (en) * | 2018-04-20 | 2018-09-07 | 河海大学 | A kind of special high adhered modification pitch of drainage pavement and preparation method |
| CN109385106A (en) * | 2018-09-30 | 2019-02-26 | 广东粤运佳富实业有限公司 | Low viscous high performance modified bitumen of one kind and preparation method thereof |
| CN110982284A (en) * | 2019-11-11 | 2020-04-10 | 同济大学 | Anti-aging SEBS modified asphalt and preparation method thereof |
| WO2021098798A1 (en) * | 2019-11-20 | 2021-05-27 | 江苏中路交通科学技术有限公司 | U-pave specialized modified asphalt, manufacturing method therefor, and use therefore |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN112409803A (en) * | 2020-11-10 | 2021-02-26 | 上海城建日沥特种沥青有限公司 | Modified asphalt raw material composition, modified asphalt and preparation method and application thereof |
| CN112300586A (en) * | 2020-11-17 | 2021-02-02 | 山东京博石油化工有限公司 | SBS modified asphalt stabilizer and SBS modified asphalt |
| CN115160808A (en) * | 2022-08-04 | 2022-10-11 | 山东海韵沥青有限公司 | High-viscosity modified asphalt and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭玉金: "基于改进响应曲面法的化学反应性复合改性沥青最优配方研究", 交通科技, vol. 3, 15 June 2019 (2019-06-15), pages 119 - 123 * |
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