CN104231640B - A kind of SBS modified asphalt regeneration agent and preparation method thereof - Google Patents
A kind of SBS modified asphalt regeneration agent and preparation method thereof Download PDFInfo
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- CN104231640B CN104231640B CN201310380129.5A CN201310380129A CN104231640B CN 104231640 B CN104231640 B CN 104231640B CN 201310380129 A CN201310380129 A CN 201310380129A CN 104231640 B CN104231640 B CN 104231640B
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 88
- 239000010426 asphalt Substances 0.000 title claims abstract description 62
- 230000008929 regeneration Effects 0.000 title claims abstract description 54
- 238000011069 regeneration method Methods 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000295 fuel oil Substances 0.000 claims abstract description 53
- 239000003921 oil Substances 0.000 claims abstract description 49
- 230000003197 catalytic effect Effects 0.000 claims abstract description 47
- 230000000149 penetrating effect Effects 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 15
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical group O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 28
- 230000035515 penetration Effects 0.000 claims description 21
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical group C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 claims description 10
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 abstract description 35
- 230000001172 regenerating effect Effects 0.000 abstract description 28
- 239000000203 mixture Substances 0.000 abstract description 21
- 239000000126 substance Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003607 modifier Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 14
- 238000011056 performance test Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 239000003205 fragrance Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000012492 regenerant Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical class CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 150000002118 epoxides Chemical group 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the regenerative use technology field of waste asphalt in road engineering, be specifically related to a kind of SBS modified asphalt regeneration agent and preparation method thereof.A kind of SBS modified asphalt regeneration agent, is characterized in that it is made up of heavy oil, catalytic cracked oil pulp, penetrating agent, SBS molecular structure restorative；Shared by each raw material, mass percent is: heavy oil 20%～45%, catalytic cracked oil pulp 40%～75%, penetrating agent 1%～5%, SBS molecular structure restorative 3%～10%.The regenerative agent of the present invention adds the chemical composition that can go back protobitumen in aging SBS modified pitch, can recover again the molecular structure of SBS modifier, and have good permeance property.This regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Description
Technical field
The invention belongs to the regenerative use technology field of waste asphalt in road engineering, be specifically related to a kind of SBS modified asphalt regeneration agent and preparation method thereof.
Background technology
Bituminous paving in use, due to the comprehensive function by environmental factors and traffic load, it is easy to the diseases such as crack, pit and rut occur so that it is pavement performance worsens, serious curtailment service life of bituminous paving.For ensureing the driving safety of road, bituminous paving need to often be maintained.In the maintenance process of bituminous paving, substantial amounts of discarded asphalt will be produced.As discarded asphalt is reclaimed, newly gather materials with part and the new Colophonium mix again of part, make reclaimed asphalt mixture, making for bituminous paving, the raw materials such as substantial amounts of Colophonium, building stones can not only be saved, reduce engineering construction cost, and the pollution to environment can be avoided, there is significant economic benefit, environmental benefit and social benefit.
But, bituminous paving in use, is subject to the effect of the environmental factorss such as heat, ultraviolet, oxygen and rainwater, and the performance of Colophonium has deteriorated, and causes that the performance of reclaimed asphalt mixture can not meet the requirement of related specifications.For improving the performance of reclaimed asphalt mixture, when discarded asphalt regenerative, by adding bitumen regenerant, it is possible to make the performance of aged asphalt be restored.
The Colophonium being currently used for road construction mainly has ordinary road Colophonium and SBS modified pitch, and wherein SBS modified pitch is because having excellent high temperature performance, has been widely used in the construction of high-grade highway.For ordinary road Colophonium, heat, the environmental factors such as ultraviolet and oxygen mainly results in the chemical composition of Colophonium and colloform texture changes, show as saturated point and fragrance point reduces, resin and asphalt increases, the softening point of Colophonium raises, needle penetration reduces, therefore the regenerative agent of ordinary road Colophonium divides the regenerative agent that content is high to recover chemical composition and the colloform texture of aged asphalt generally by adding fragrance, such as the patent of invention CN200910061435.6 main component being regenerative agent with heavy oil and catalytic cracked oil pulp, the high aromatic hydrocarbon relying on height saturated part content of heavy oil and catalytic cracked oil pulp divides content to reduce the chemical composition of aged asphalt, recover its colloform texture, thus improving its performance；And for SBS modified pitch, environmental factors not only affects chemical composition and the colloform texture of Colophonium, the molecular structure also resulting in modifying agent SBS destroys because of degraded, makes the softening point of modified pitch and low-temperature ductility significantly reduce.Owing to the high temperature performance of SBS modified pitch depends on SBS, and the regenerative agent of existing ordinary road Colophonium can not recover the molecular structure of SBS in modified pitch, therefore the recovery of SBS modified pitch high temperature performance is extremely limited by it.
For recovering the performance of aging SBS modified pitch, patent CN201210094903.1 discloses a kind of SBS modified asphalt regeneration agent being made up of 10～20%SBS, 15～60% Colophoniumes, 20～60% tapped oil, 4～20% dibutyl phthalates, 0.05～0.3% stabilizer, and patent CN200910183162.2 discloses a kind of special regenerative agent of modified pitch being made up of 50～80% heavy mineral oils, 10～25% thermoplastic elastic bodies, 10～30% high boiling point solvent oils, 0.5～4% stabilizer, 0.1～1% antioxidant and 0.1～2% antistripping agent.Both regenerative agents are all utilize high saturated point to divide the material of content to recover the chemical composition of aged asphalt and to be improved the high temperature performance of SBS modified pitch by polymer modifiers (thermoplastic elastic body) with fragrance, fail to realize recovery to disrupted SBS molecular structure, thus cause that regenerative agent viscosity is big, also high to the poor permeability in aging SBS modified pitch film, cost.
Summary of the invention
It is an object of the invention to provide a kind of SBS modified asphalt regeneration agent and preparation method thereof, this regenerative agent can make the performance of aging SBS modified pitch better be recovered.
To achieve these goals, the technical scheme is that a kind of SBS modified asphalt regeneration agent, it is characterized in that it is made up of heavy oil, catalytic cracked oil pulp, penetrating agent, SBS molecular structure restorative；Shared by each raw material, mass percent is: heavy oil 20%～45%, catalytic cracked oil pulp 40%～75%, penetrating agent 1%～5%, SBS molecular structure restorative 3%～10%.
Described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
In described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
Described penetrating agent is furfural.
Described SBS molecular structure restorative is 1,4-butanediol diglycidyl ether.
The preparation method of above-mentioned a kind of SBS modified asphalt regeneration agent, is characterized in that it comprises the following steps that
1) by mass percent shared by each raw material it is: heavy oil 20%～45%, catalytic cracked oil pulp 40%～75%, penetrating agent 1%～5%, SBS molecular structure restorative 3%～10%, choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative, standby；
2) difference heating heavy oil and catalytic cracked oil pulp are to 120～140 DEG C；
3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 20～40min under the rotating speed of 100～200rpm, keeping temperature is 120～140 DEG C；
4) adding penetrating agent and SBS molecular structure restorative, keeping temperature is 120～140 DEG C, stirs 10～20min, obtain SBS modified asphalt regeneration agent under the rotating speed of 100～200rpm.
Beneficial effects of the present invention is as follows:
(1) SBS modified asphalt mixture mix, in paving process, the effect being heated, the light component volatilization of Colophonium, cause that its saturated point of content significantly reduces；In SBS Modified Bitumen Pavement use procedure, being heated, oxygen and ultraviolet effect, the chemical constituent in Colophonium is divided by fragrance and is gradated as resin and asphalt, makes Colophonium chemical composition and colloform texture there occurs change, causes its performance degradation.The present invention relies on the high fragrance point content of the saturated part content of height of heavy oil and catalytic cracked oil pulp to reduce the chemical composition of aged asphalt and colloform texture, to recover the physical property of aged asphalt.
(2) SBS modified asphalt mixture mix, pave and in pavement usage process, under the effect of heat or ultraviolet light, weak bond in SBS strand can rupture and degradation reaction occurs, form free free radical, free free radical is combined with oxygen molecule, forms the free free radical of peroxidating, and the free free radical of peroxidating continues and SBS molecular reaction, make the weak bond in SBS strand rupture, form new free free radical.Along with continuously performing of radical reaction, SBS molecular weight is gradually reduced, and causes that the softening point of modified pitch and low-temperature ductility significantly reduce.The present invention by adding 1 in regenerative agent, 4-butanediol diglycidyl ether, the oxygen-containing functional group (such as carboxyl) that the epoxide group at its two ends can be formed with SBS degraded oxidation respectively is utilized to react, SBS molecular structure is made to be restored, molecular weight increases, and softening point and the low-temperature ductility of modified pitch are restored.
(3) present invention utilizes furfural to colloid, bitum good intermiscibility, make in the aging SBS modified pitch film of the regenerative agent old surface of aggregate of readily permeable entrance, realize within a short period of time regenerative agent and aging SBS modified pitch between good mix, so that the chemical composition of aging SBS modified pitch and molecular structure are easily available recovery, the performance of SBS modified asphalt mixture is well improved.This regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Detailed description of the invention
In order to be better understood from the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but present disclosure is not limited solely to the following examples.
For ease of evaluating the SBS modified asphalt regeneration agent of the present invention improvement effect to aging SBS performance of modified bitumen, the present invention simulates SBS modified pitch short ageing in compound mix, paving process by rotary thin film in drying oven (RTFOT), pressure ageing oven (PAV) simulates aging in the life-time service process of road surface of SBS modified pitch, to obtain aging SBS modified pitch.Aging SBS process for preparing modified asphalt is as follows: (softening point is 75 DEG C to SBS modified pitch, 5 DEG C of ductilities are 35cm, 25 DEG C of needle penetrations are 53dmm) in the rotary thin film in drying ovens of 163 DEG C (RTFOT) aging 85 minutes, then aging 20h in the pressure ageing ovens (PAV) of 100 DEG C and 2.1MPa air pressure.SBS modified pitch softening point after aging is 66 DEG C, 5 DEG C ductilities be 1.3cm, 25 DEG C of needle penetrations is 26dmm.Following embodiment all adopts this aging SBS modified pitch to be test raw material.
Embodiment 1:
(softening point is 40 DEG C to weigh the heavy oil that heated to 130 DEG C respectively, needle penetration is 220dmm) 29 mass parts and catalytic cracked oil pulp (mass content of aromatic component is 58wt%) 63 mass parts that heated to 130 DEG C, catalytic cracked oil pulp is added in heavy oil, stirring mixing 25min under 130 DEG C ± 5 DEG C rotating speeds with 150rpm, then, add the furfural of 4 mass parts and the 1 of 4 mass parts, 4-butanediol diglycidyl ether, keeping temperature is 130 DEG C, under the rotating speed of 150rpm, continue stirring 10min, namely obtain SBS modified asphalt regeneration agent.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 25cm, and softening point is 70 DEG C, and needle penetration is 50dmm.Illustrate that this regenerative agent can be gone back the chemical composition of protobitumen, can recover again the molecular structure of SBS and have good permeance property.This regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Comparative example:
(softening point is 40 DEG C to weigh the heavy oil that heated to 130 DEG C respectively, needle penetration is 220dmm) 31 mass parts and catalytic cracked oil pulp (mass content of aromatic component is 58%) 65 mass parts that heated to 130 DEG C, catalytic cracked oil pulp is added in heavy oil, stirring 25min under 130 DEG C ± 5 DEG C rotating speeds with 150rpm, then, adding the furfural of 4 mass parts, keeping temperature is 130 DEG C, under the rotating speed of 150rpm, continue stirring 10min, namely obtain bitumen regenerant.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned bitumen regenerant 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.This regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 2.2cm, and softening point is 60 DEG C, and needle penetration is 51dmm.
Compared with embodiment 1, owing to the regenerative agent in comparative example does not fill SBS molecular structure restorative, using the softening point regenerating SBS modified pitch prepared by the regenerative agent of comparative example relatively low, 5 DEG C of ductilities are almost without recovery.Illustrate that the molecular structure of aging SBS modifier is had good restitution by the regenerative agent of the present invention.
Embodiment 2:
(softening point is 40 DEG C to weigh the heavy oil that heated to 130 DEG C respectively, needle penetration is 220dmm) 28 mass parts and catalytic cracked oil pulp (mass content of aromatic component is 58wt%) 62 mass parts that heated to 130 DEG C, catalytic cracked oil pulp is added in heavy oil, stirring 25min under 130 DEG C ± 5 DEG C rotating speeds with 150rpm, then, add the furfural of 4 mass parts and the 1 of 6 mass parts, 4-butanediol diglycidyl ether, keeping temperature is 130 DEG C, under the rotating speed of 150rpm, continue stirring 10min, namely obtain SBS modified asphalt regeneration agent.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 30cm, and softening point is 72 DEG C, and needle penetration is 51dmm.
Compared with embodiment 1, along with the increase of SBS molecular structure restorative volume in regenerative agent, softening point and 5 DEG C of ductilities of regeneration SBS modified pitch all obtain further raising.
Embodiment 3:
(softening point is 42 DEG C to weigh the heavy oil that heated to 135 DEG C respectively, needle penetration is 210dmm) 35 mass parts and catalytic cracked oil pulp (mass content of aromatic component is 65wt%) 56 mass parts that heated to 130 DEG C, catalytic cracked oil pulp is added in heavy oil, stirring 30min under 130 DEG C ± 5 DEG C rotating speeds with 100rpm, then, add the furfural of 3 mass parts and the 1 of 6 mass parts, 4-butanediol diglycidyl ether, keeping temperature is 130 DEG C, under the rotating speed of 150rpm, continue stirring 20min, namely obtain SBS modified asphalt regeneration agent.
Weighing and heat aging SBS modified pitch 90 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 10 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 34cm, and softening point is 73 DEG C, and needle penetration is 55dmm.The performance of this regeneration SBS modified pitch is close with aging front SBS performance of modified bitumen.
Embodiment 4:
The preparation method of a kind of SBS modified asphalt regeneration agent, it comprises the following steps that
(1) it is: heavy oil 20%, catalytic cracked oil pulp 67%, penetrating agent 5%, SBS molecular structure restorative 8% choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative raw material by mass percent shared by each raw material, standby；
Described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
In described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
Described penetrating agent is furfural.
Described SBS molecular structure restorative is 1,4-butanediol diglycidyl ether.
(2) difference heating heavy oil and catalytic cracked oil pulp are to 120 DEG C；
(3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 20min under the rotating speed of 100rpm, keeping temperature is 120 DEG C；
(4) adding furfural and BDDE, keeping temperature is 120 DEG C, stirs 10min, obtain SBS modified asphalt regeneration agent under the rotating speed of 100rpm.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 32cm, and softening point is 71 DEG C, and needle penetration is 53dmm.This regenerative agent can make the performance of aging SBS modified pitch well be recovered.
Embodiment 5:
The preparation method of a kind of SBS modified asphalt regeneration agent, it comprises the following steps that
(1) it is: heavy oil 45%, catalytic cracked oil pulp 51%, penetrating agent 1%, SBS molecular structure restorative 3% choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative raw material by mass percent shared by each raw material, standby；
Described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
In described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
Described penetrating agent is furfural.
Described SBS molecular structure restorative is 1,4-butanediol diglycidyl ether.
(2) difference heating heavy oil and catalytic cracked oil pulp are to 140 DEG C；
(3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 40min under the rotating speed of 200rpm, keeping temperature is 140 DEG C；
(4) adding furfural and BDDE, keeping temperature is 140 DEG C, stirs 20min, obtain SBS modified asphalt regeneration agent under the rotating speed of 200rpm.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 22cm, and softening point is 68 DEG C, and needle penetration is 46dmm.Illustrate that this regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Embodiment 6:
The preparation method of a kind of SBS modified asphalt regeneration agent, it comprises the following steps that
(1) it is: heavy oil 45%, catalytic cracked oil pulp 40%, penetrating agent 5%, SBS molecular structure restorative 10% choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative raw material by mass percent shared by each raw material, standby；
Described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
In described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
Described penetrating agent is furfural.
Described SBS molecular structure restorative is 1,4-butanediol diglycidyl ether.
(2) difference heating heavy oil and catalytic cracked oil pulp are to 140 DEG C；
(3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 40min under the rotating speed of 200rpm, keeping temperature is 140 DEG C；
(4) adding furfural and BDDE, keeping temperature is 140 DEG C, stirs 20min, obtain SBS modified asphalt regeneration agent under the rotating speed of 200rpm.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 33cm, and softening point is 72 DEG C, and needle penetration is 50dmm.Illustrate that this regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Embodiment 7:
The preparation method of a kind of SBS modified asphalt regeneration agent, it comprises the following steps that
(1) it is: heavy oil 20%, catalytic cracked oil pulp 75%, penetrating agent 1%, SBS molecular structure restorative 4% choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative raw material by mass percent shared by each raw material, standby；
Described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
In described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
Described penetrating agent is furfural.
Described SBS molecular structure restorative is 1,4-butanediol diglycidyl ether.
(2) difference heating heavy oil and catalytic cracked oil pulp are to 140 DEG C；
(3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 40min under the rotating speed of 200rpm, keeping temperature is 140 DEG C；
(4) adding furfural and BDDE, keeping temperature is 140 DEG C, stirs 20min, obtain SBS modified asphalt regeneration agent under the rotating speed of 200rpm.
Weighing and heat aging SBS modified pitch 93 mass parts to 160 DEG C, add above-mentioned SBS modified asphalt regeneration agent 7 parts, keeping temperature is 160 DEG C, stirs 30min under 200rpm rotating speed, namely prepares regeneration SBS modified pitch.Regeneration SBS modified pitch is carried out performance test, and 5 DEG C of ductilities are 25cm, and softening point is 69 DEG C, and needle penetration is 51dmm.Illustrate that this regenerative agent can make the performance of aging SBS modified pitch better be recovered.
Claims (6)
1. a SBS modified asphalt regeneration agent, is characterized in that it is made up of heavy oil, catalytic cracked oil pulp, penetrating agent, SBS molecular structure restorative；Shared by each raw material, mass percent is: heavy oil 20%～45%, catalytic cracked oil pulp 40%～75%, penetrating agent 1%～5%, SBS molecular structure restorative 3%～10%.
2. a kind of SBS modified asphalt regeneration agent according to claim 1, it is characterised in that: described heavy oil is depressed heavy oil, and its softening point is 35～45 DEG C, and needle penetration is more than 200dmm.
3. a kind of SBS modified asphalt regeneration agent according to claim 1, it is characterised in that: in described catalytic cracked oil pulp, the mass content of aromatic component is more than 55wt%.
4. a kind of SBS modified asphalt regeneration agent according to claim 1, it is characterised in that: described penetrating agent is furfural.
5. a kind of SBS modified asphalt regeneration agent according to claim 1, it is characterised in that: described SBS molecular structure restorative is BDDE.
6. the preparation method of a kind of SBS modified asphalt regeneration agent as claimed in claim 1, is characterized in that it comprises the following steps that
1) it is: heavy oil 20%～45%, catalytic cracked oil pulp 40%～75%, penetrating agent 1%～5%, SBS molecular structure restorative 3%～10% choose heavy oil, catalytic cracked oil pulp, penetrating agent and SBS molecular structure restorative by mass percent shared by each raw material, standby；
2) difference heating heavy oil and catalytic cracked oil pulp are to 120～140 DEG C；
3) adding in heavy oil by catalytic cracked oil pulp, start blender, stir 20～40min under the rotating speed of 100～200rpm, keeping temperature is 120～140 DEG C；
4) adding penetrating agent and SBS molecular structure restorative, keeping temperature is 120～140 DEG C, stirs 10～20min, obtain SBS modified asphalt regeneration agent under the rotating speed of 100～200rpm.
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| CN104479378B (en) * | 2014-12-26 | 2016-09-21 | 长安大学 | A kind of response type waste and old SBS modified asphalt regeneration agent and preparation method thereof |
| CN108715686B (en) * | 2018-06-08 | 2021-03-05 | 交通运输部科学研究院 | SBS modified asphalt regenerant containing olefin metathesis catalyst and preparation method thereof |
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| CN111851225B (en) * | 2020-07-06 | 2021-12-21 | 中电建路桥集团有限公司 | Construction method for regenerating old asphalt pavement |
| CN112143244B (en) * | 2020-09-27 | 2022-03-11 | 武汉理工大学 | Amino-terminated reactive SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method thereof |
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| CN112251036B (en) * | 2020-10-23 | 2021-12-10 | 山东大学 | Waste SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method and application thereof |
| CN112795204A (en) * | 2020-12-30 | 2021-05-14 | 长安大学 | High-permeability asphalt regenerant and preparation method thereof |
| CN113354340A (en) * | 2021-07-14 | 2021-09-07 | 深圳市粤通建设工程有限公司 | Plant-mixed hot recycled asphalt mixture and preparation method thereof |
| CN113773658A (en) * | 2021-09-17 | 2021-12-10 | 湖南致力工程科技有限公司 | SBS modified asphalt regenerant and preparation method thereof |
| CN114806195B (en) * | 2022-03-23 | 2023-11-10 | 湖北工业大学 | Ageing-resistant polymer modified asphalt prepared from MXene and preparation method thereof |
| CN116041969A (en) * | 2023-01-09 | 2023-05-02 | 广东交科技术研发有限公司 | Asphalt recycling agent and preparation method and application thereof |
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| CN101629020A (en) * | 2009-08-10 | 2010-01-20 | 江苏省建筑科学研究院有限公司 | Special regenerant suitable for regenerating modified asphalt and prepared method thereof |
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