CN107722650A - A kind of environmentally friendly high viscosity modified pitch and preparation method thereof - Google Patents
A kind of environmentally friendly high viscosity modified pitch and preparation method thereof Download PDFInfo
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- CN107722650A CN107722650A CN201710874816.0A CN201710874816A CN107722650A CN 107722650 A CN107722650 A CN 107722650A CN 201710874816 A CN201710874816 A CN 201710874816A CN 107722650 A CN107722650 A CN 107722650A
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
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Abstract
The invention discloses a kind of environmentally friendly high viscosity modified pitch and preparation method thereof, it is made up of matrix pitch, 3 15 parts of ready-mixed oil, 01 parts of plasticizer, 5 20 parts of tackifier, 0.1 0.5 parts of stabilizer and 5 20 parts of modifying agent that mass fraction is 55 70 parts, wherein, modifying agent is made up of waste-tyre rubber-powder and SBS, and waste-tyre rubber-powder and SBS mass ratio are 3 15：2 10, the cohesiveness and ageing resistance of the modified pitch are excellent, and cost is low, and preparation method is simple.
Description
Technical field
The invention belongs to pavement material technical field, is related to a kind of environmentally friendly high viscosity modified pitch and preparation method thereof.
Background technology
The voidage of water-permeating pitch mixed material reaches 15%~20%, is easily corroded by load, water, air and sunlight
Cause intensity and durability to decline, produce pavement disease.In order to improve the performance of drainage type asphalt, it is necessary to research and develop high glutinous
The modified pitch cementitious matter of knot ability and high stability, while meet cheap, the sustainable feature of environmental protection.
China is the TPS modifying agent of Japan and the SK modifying agent of South Korea using most common import high viscosity modifying agent.This
The better performances of a little modifying agent, viscosity is higher, but price.If Japanese TPS high-viscosity asphalts modifying agent is with thermoplasticity rubber
Glue is main component, then is equipped with the compositions such as cohesiveness resin and plasticizer and is stirred and form, currently about 30000 yuan/ton, and
Domestic common SBS modified pitch prices are about 4000~6000 yuan/ton.
Relatively successfully domestic high viscosity modifying agent is Guangzhou road Xiang high-viscosity asphalt, Shenzhen Hai Chuan SNOTPS to China's application
High viscosity modifying agent, Hubei state wound high-viscosity asphalt, PVG road and bridge RST high viscosity modifying agent etc..With Shanghai Expo Site
Exemplified by interior porous pavement, a large amount of RST modifying agent developed using PVG road and bridge, its Patent No.
200510023227.9, by 100 parts of SBS, 40-100 parts Petropols form with 34-70 parts diatomite.High viscosity is modified at present
Pitch is mainly prepared using SBS (6%-12%) modified pitch of high content.And SBS prices are higher, and molecular backbone structure is not
Saturation degree is high, and aging easily occurs.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art, there is provided a kind of environmentally friendly high viscosity modified pitch and
Its preparation method, the cohesiveness and ageing resistance of the modified pitch are excellent, and cost is low, and preparation method is simple.
To reach above-mentioned purpose, base of the environmentally friendly high viscosity modified pitch of the present invention by mass fraction for 55-70 parts
Matter pitch, the ready-mixed oil of 3-15 parts, the plasticizer of 0-1 parts, the tackifier of 5-20 parts, the stabilizer of 0.1-0.5 parts and 5-20 parts
Modifying agent composition, wherein, modifying agent is made up of waste-tyre rubber-powder and SBS, and waste-tyre rubber-powder and SBS mass ratio are 3-
15：2-10.
Matrix pitch is road No. 110 No. 70 asphalt, No. 90 asphalt of road and road asphalt
In one or more of mixture in any proportion.
Ready-mixed oil is one in the purified useless heavy mineral oil of recovery, waste coal tar, used oil and useless heavy oil
Kind or several mixtures in any proportion.
Plasticizer is one in dioctyl phthalate, dibutyl phthalate and acetic acid-acetate ethylene copolymer
Kind or several mixtures mixed in any proportion.
Tackifier is C5 Petropols, C5/C9 copolymerized petroleum resins and one kind or several in dicyclopentadiene petroleum resin
The mixture that kind mixes in any proportion.
Waste-tyre rubber-powder be one or both of waste bias tires rubber powder and waste radial tire rubber powder in any proportion
The mixture of mixing.
Stabilizer mixes mixed in any proportion for one or both of polyamide-based stabilizer and sulfur stabilizer
Compound.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 130-140 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then after heating up
Tackifier, modifying agent and stabilizer are added, then is stirred and shears, constant temperature stirring is then carried out again, is finally cooled to room temperature,
Obtain environmentally friendly high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after being warming up to 175-185 DEG C in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 20min-40min is mixed, SBS, tackifier and stabilizer are then added while stirring, finally with 300r/min stir speed (S.S.)
Stirring swelling 20min-40min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 30min-
90min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
The invention has the advantages that：
Environmentally friendly high viscosity modified pitch of the present invention is by matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer
And modifying agent composition, wherein, modifying agent is made up of waste-tyre rubber-powder and SBS, realizes the recycling of waste-tyre rubber-powder, is reduced
The dosage of pitch, cost is reduced while environmental protection, realizes the recycling of resource.In addition, pass through SBS and waste-tyre rubber-powder
Blending, effectively strengthen the ageing resistance and cohesiveness of pitch.Simultaneously by tackifier and stabilizer improve waste-tyre rubber-powder,
High temperature modified dose and the compatibility of matrix pitch, improve the bond performance of asphalt and aggregate.It should be noted simultaneously that the present invention
The heavy components content of matrix pitch is improved by ready-mixed oil, the ageing resistance of modified pitch is improved, increases its viscosity and height
Temperature stability.Through experiment, the present invention can reduce modified pitch cost, about 5000 yuan/ton of production cost；Ring of the present invention
Protect the softening point of high viscosity modified pitch when reaching 90 DEG C, 60 DEG C dynamic viscosity it is higher, apparent viscosity is at 135 DEG C
8700mPas, therefore there is higher cohesiveness and high-temperature stability, have simultaneously relative to traditional modified pitch, the present invention
Anti- isolation ability when improving compound mix and paving of effect；In addition, the modification formed using waste-tyre rubber-powder and SBS
Agent, to increase the ageing resistace of pitch, after testing, quality is damaged after environmentally friendly high viscosity modified pitch aging 5h of the present invention
Lose than being -0.069%, far below TPS modified pitch；Recovery compliance and stickiness stiffness modulus at 70 DEG C are modified drip higher than TPS
Green grass or young crops, non-recoverable creep compliance are less than TPS modified pitch, and high-temperature behavior is more excellent compared with TPS modified pitch.Meanwhile the present invention
Described environmentally friendly high viscosity modified pitch in preparation process, only need each raw material will be mixed in order, be heated, be stirred and
Shearing, preparation method are relatively simple.
Embodiment
The present invention is described in further detail with reference to specific embodiment, be explanation of the invention below without
It is to limit.
Comparative example
Selection using most common high viscosity modified pitch and tests its performance at present, wherein, modifying agent and matrix pitch
Mass ratio be 12：88.
High viscosity modifying agent is TPS modifying agent.
Matrix pitch is No. 90 asphalt of road.
The preparation method of high viscosity modified pitch comprises the following steps described in comparative example：
1) TPS modifying agent and No. 90 asphalt are weighed, wherein, the mass ratio of TPS modifying agent and matrix pitch is 12:
88；
2) matrix pitch is heated to 175 DEG C, stirs and add TPS modifying agent, wherein, stir speed (S.S.) 300r/min,
A length of 30min, is then sheared using high-speed shearing machine during stirring, wherein, shear rate 3000r/min, shear time is
60min, swelling development 30min is then carried out, obtains high viscosity modified pitch, wherein, high viscosity modified pitch prepared by comparative example
Basic property and high-temperature behavior reference table 1, table 2 and table 3.
Table 1
Table 2
| High-temperature behavior (70 DEG C, 50Pa) | TPS is unaged | TPS agings 5h | TPS agings 10h |
| Recover compliance R | 0.907917 | 0.857755 | 0.455100534 |
| Non-recoverable creep compliance Jnr | 0.000061 | 0.000124 | 0.000754 |
| Stickiness stiffness modulus Gv | 240.325489 | 124.104754 | 24.771019 |
Table 3
| High-temperature behavior (70 DEG C, 100Pa) | TPS is unaged | TPS agings 5h | TPS agings 10h |
| Recover compliance R | 0.891411 | 0.801550377 | 0.36939016 |
| Non-recoverable creep compliance Jnr | 0.000052 | 0.0000832 | 0.000895 |
| Stickiness stiffness modulus Gv | 373.056448 | 137.925022 | 21.724216 |
Embodiment one
Environmentally friendly high viscosity modified pitch of the present invention by mass fraction be 67 parts matrix pitch, 5 parts of ready-mixed oil,
1 part of plasticizer, 13 parts of tackifier, 0.2 part of stabilizer and 14 parts of modifying agent composition, wherein, modifying agent is by waste and old wheel
Tire rubber powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 10：4.
Matrix pitch is No. 90 asphalt of road.
Ready-mixed oil is the purified used oil of recovery.
Plasticizer is dioctyl phthalate.
Tackifier is C5/C9 copolymerized petroleum resins.
Waste-tyre rubber-powder is waste bias tires rubber powder.
Stabilizer is sulfur stabilizer.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 140 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 180 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 30min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 30min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 60min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
The performance of environmentally friendly high viscosity modified pitch prepared by embodiment one is as shown in table 4, table 5 and table 6：
Table 4
Table 5
| High-temperature behavior (70 DEG C, 50Pa) | It is unaged | Aging 5h | Aging 10h |
| Recover compliance R | 0.981694 | 0.961490 | 0.921516 |
| Non-recoverable creep compliance Jnr | 0.000010 | 0.000025 | 0.000054 |
| Stickiness stiffness modulus Gv | 908.980491 | 558.727553 | 263.109452 |
Table 6
| High-temperature behavior (70 DEG C, 100Pa) | It is unaged | Aging 5h | Aging 10h |
| Recover compliance R | 0.978530 | 0.965943 | 0.893156 |
| Non-recoverable creep compliance Jnr | 0.000013 | 0.000020 | 0.000049 |
| Stickiness stiffness modulus Gv | 965.110836 | 690.804027 | 285.318600 |
Embodiment two
Environmentally friendly high viscosity modified pitch of the present invention by mass fraction be 66 parts matrix pitch, 5 parts of ready-mixed oil,
13 parts of tackifier, 0.2 part of stabilizer and 16 parts of modifying agent composition, wherein, modifying agent is by waste-tyre rubber-powder and SBS groups
Into waste-tyre rubber-powder and SBS mass ratio are 12：4.
Matrix pitch is No. 90 asphalt of road.
Ready-mixed oil is the purified waste coal tar of recovery.
Tackifier is C5 Petropols.
Waste-tyre rubber-powder is waste radial tire rubber powder.
Stabilizer is polyamide-based stabilizer.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 130 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 180 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 30min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 30min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 60min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
The performance of environmentally friendly high viscosity modified pitch prepared by embodiment two is as shown in table 7, table 8 and table 9：
Table 7
Table 8
| High-temperature behavior (70 DEG C, 50Pa) | It is unaged | Aging 5h | Aging 10h |
| Recover compliance R | 0.952763 | 0.920968 | 0.902635 |
| Non-recoverable creep compliance Jnr | 0.000015 | 0.000034 | 0.000060 |
| Stickiness stiffness modulus Gv | 984.780496 | 571.626448 | 283.750476 |
Table 9
| High-temperature behavior (70 DEG C, 100Pa) | It is unaged | Aging 5h | Aging 10h |
| Recover compliance R | 0.958730 | 0.918751 | 0.896742 |
| Non-recoverable creep compliance Jnr | 0.000018 | 0.000044 | 0.000054 |
| Stickiness stiffness modulus Gv | 908.980491 | 531.893769 | 258.597509 |
Embodiment three
Environmentally friendly high viscosity modified pitch of the present invention by mass fraction be 65 parts matrix pitch, 5 parts of ready-mixed oil,
1 part of plasticizer, 15 parts of tackifier, 0.4 part of stabilizer and 14 parts of modifying agent composition, wherein, modifying agent is by waste and old wheel
Tire rubber powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 10：4.
Matrix pitch is No. 70 asphalt of road.
Ready-mixed oil is the purified useless heavy mineral oil of recovery.
Plasticizer is dioctyl phthalate.
Tackifier is dicyclopentadiene petroleum resin.
Waste-tyre rubber-powder is the mixture that waste bias tires rubber powder and waste radial tire rubber powder mix in any proportion.
Stabilizer is the mixture that polyamide-based stabilizer and sulfur stabilizer mix in any proportion.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 135 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 175 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 20min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 40min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 90min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
The performance of environmentally friendly high viscosity modified pitch prepared by embodiment three is as shown in table 10, table 11 and table 12：
Table 10
Table 11
Table 12
| High-temperature behavior (70 DEG C, 100Pa) | It is unaged | Aging 5h | Aging 10h |
| Recover compliance R | 0.961938 | 0.930867 | 0.924618 |
| Non-recoverable creep compliance Jnr | 0.000013 | 0.000025 | 0.000061 |
| Stickiness stiffness modulus Gv | 965.55862 | 598.773861 | 283.276805 |
Example IV
Environmentally friendly high viscosity modified pitch of the present invention by mass fraction be 70 parts matrix pitch, 3 parts of ready-mixed oil,
0.5 part of plasticizer, 20 parts of tackifier, 0.1 part of stabilizer and 20 parts of modifying agent composition, wherein, modifying agent is by waste and old
Tire glue powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 15：2.
Matrix pitch is No. 110 asphalt of road.
Ready-mixed oil is the purified useless heavy oil of recovery.
Plasticizer is dibutyl phthalate.
Tackifier is C5 Petropols.
Waste-tyre rubber-powder is waste bias tires rubber powder.
Stabilizer is polyamide-based stabilizer.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 130 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 185 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 20min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 40min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 80min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
Embodiment five
Environmentally friendly high viscosity modified pitch of the present invention is by matrix pitch of the mass fraction for 55 parts, 15 parts of mediation
Oil, 0.8 part of plasticizer, 5 parts of tackifier, 0.5 part of stabilizer and 5 parts of modifying agent composition, wherein, modifying agent is by waste and old
Tire glue powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 3：10.
Matrix pitch is the road mixture of No. 90 asphalt and road with No. 110 asphalt in any proportion.
Mixture of the ready-mixed oil for recovery purified used oil and useless heavy oil in any proportion.
Plasticizer is acetic acid-acetate ethylene copolymer.
Tackifier is that C5 Petropols, C5/C9 copolymerized petroleum resins and dicyclopentadiene petroleum resin mix in any proportion
The mixture of conjunction.
Waste-tyre rubber-powder is waste bias tires rubber powder.
Stabilizer is polyamide-based stabilizer.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 140 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 175 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 40min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 20min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 30min-
90min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
Embodiment six
Environmentally friendly high viscosity modified pitch of the present invention by mass fraction be 60 parts matrix pitch, 5 parts of ready-mixed oil,
0.5 part of plasticizer, 18 parts of tackifier, 0.3 part of stabilizer and 12 parts of modifying agent composition, wherein, modifying agent is by waste and old
Tire glue powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 5：8.
Matrix pitch is road No. 110 No. 70 asphalt, No. 90 asphalt of road and road asphalt
Mixture in any proportion.
Ready-mixed oil is the purified waste coal tar of recovery, the mixture of used oil and useless heavy oil in any proportion.
Plasticizer is the mixture that dibutyl phthalate and acetic acid-acetate ethylene copolymer mix in any proportion.
Tackifier is the mixture that C5/C9 copolymerized petroleum resins and dicyclopentadiene petroleum resin mix in any proportion.
Waste-tyre rubber-powder be one or both of waste bias tires rubber powder and waste radial tire rubber powder in any proportion
The mixture of mixing.
Stabilizer mixes mixed in any proportion for one or both of polyamide-based stabilizer and sulfur stabilizer
Compound.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 135 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 177 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 35min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 25min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 45min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
Embodiment seven
Environmentally friendly high viscosity modified pitch of the present invention is by matrix pitch of the mass fraction for 55 parts, 15 parts of mediation
Oil, 0.1 part of plasticizer, 6 parts of tackifier, 0.5 part of stabilizer and 19 parts of modifying agent composition, wherein, modifying agent is by giving up
Old tire rubber powder and SBS compositions, waste-tyre rubber-powder and SBS mass ratio are 10：5.
Matrix pitch is No. 70 asphalt of road.
Ready-mixed oil is pressed arbitrarily to reclaim purified useless heavy mineral oil, waste coal tar, used oil and useless heavy oil
The mixture of ratio.
Plasticizer is dioctyl phthalate, dibutyl phthalate and acetic acid-acetate ethylene copolymer by any
The mixture of ratio mixing.
Tackifier is dicyclopentadiene petroleum resin.
Waste-tyre rubber-powder is waste bias tires rubber powder.
Stabilizer is sulfur stabilizer.
The preparation method of environmentally friendly high viscosity modified pitch of the present invention comprises the following steps：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 130 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
Tackifier, modifying agent and stabilizer are added after 175 DEG C are warming up in step 2).
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, then is stirred
Swelling 32min is mixed, then adds SBS, tackifier and stabilizer while stirring, it is finally molten with 300r/min stir speed (S.S.) stirring
Swollen 25min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 70min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
Ring of the present invention is can be seen that from comparative example, embodiment one, embodiment two, embodiment three and example IV
Existing professional standard can be met by protecting the parameters index of high viscosity modified pitch basic property《Asphalt paving technology is advised
Journey》CJJ/T20 190-2012 relevant regulations, high-temperature behavior experimental evidence U.S. AASHTO standards.High viscosity modified pitch is soft
Change up to 91 DEG C of point, the mass loss rate after TFOT is low, has excellent high-temperature stability；Viscosity is higher, high temperature rheology energy
The high-viscosity asphalt generally used higher than the country；And technique is simple.
It is described above, only it is presently preferred embodiments of the present invention, any restrictions is not done to the present invention, it is every according to invention skill
Any simple modification, change and the equivalent structure change that art is substantially made to above example, still fall within the technology of the present invention
In the protection domain of scheme.
Claims (10)
1. a kind of environmentally friendly high viscosity modified pitch, it is characterised in that by matrix pitch of the mass fraction for 55-70 parts, 3-15 parts
Ready-mixed oil, the plasticizer of 0-1 parts, the tackifier of 5-20 parts, the stabilizer of 0.1-0.5 parts and the modifying agent of 5-20 parts composition,
Wherein, modifying agent is made up of waste-tyre rubber-powder and SBS, and waste-tyre rubber-powder and SBS mass ratio are 3-15：2-10.
2. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that matrix pitch is No. 70 stones of road
The one or more of mixing in any proportion in No. 110 asphalt with No. 90 asphalt and road of oil asphalt, road
Thing.
3. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that ready-mixed oil gives up for recovery is purified
One or more of mixtures in any proportion in heavy mineral oil, waste coal tar, used oil and useless heavy oil.
4. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that plasticizer is that phthalic acid two is pungent
The mixture that one or more in ester, dibutyl phthalate and acetic acid-acetate ethylene copolymer mix in any proportion.
5. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that tackifier is C5 Petropols, C5/
The mixture that one or more in C9 copolymerized petroleum resins and dicyclopentadiene petroleum resin mix in any proportion.
6. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that waste-tyre rubber-powder is waste bias
The mixture that one or both of tire rubber powder and waste radial tire rubber powder mix in any proportion.
7. environmentally friendly high viscosity modified pitch according to claim 1, it is characterised in that stabilizer is polyamide-based stabilizer
And the mixture that one or both of sulfur stabilizer mixes in any proportion.
8. the preparation method of the environmentally friendly high viscosity modified pitch described in a kind of claim 1, it is characterised in that including following step
Suddenly：
1) matrix pitch, ready-mixed oil, plasticizer, tackifier, stabilizer and modifying agent are weighed；
2) matrix pitch is preheated to 130-140 DEG C, sequentially adds ready-mixed oil and plasticizer while stirring, then added after heating up
Tackifier, modifying agent and stabilizer, then be stirred and shear, constant temperature stirring is then carried out again, is finally cooled to room temperature, obtains ring
Protect high viscosity modified pitch.
9. the preparation method of high viscosity modified pitch according to claim 8, it is characterised in that be warming up in step 2)
Tackifier, modifying agent and stabilizer are added after 175-185 DEG C.
10. the preparation method of high viscosity modified pitch according to claim 8, it is characterised in that
The detailed process of addition tackifier, modifying agent and stabilizer is in step 2)：Waste-tyre rubber-powder is first added, is stirred for molten
Swollen 20min-40min, SBS, tackifier and stabilizer are then added while stirring, finally stirred with 300r/min stir speed (S.S.)
It is swelled 20min-40min；
The shear rate of step 2) shear history high speed cutter is 3000r/min, shear time 30min-90min；
Mixing speed in step 2) in constant temperature whipping process is 300r/min.
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| CN114292525A (en) * | 2021-12-29 | 2022-04-08 | 中冶南方城市建设工程技术有限公司 | Modified asphalt suitable for hard-soft composite long-life pavement interlayer and preparation method thereof |
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| CN115215584A (en) * | 2022-02-22 | 2022-10-21 | 上海占弘水性高分子材料有限公司 | Environment-friendly strong cold-mix colorful pervious asphalt and preparation method thereof |
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