CN105820391A - High-viscosity asphalt modifying agent, preparation method and preparation method of modified asphalt - Google Patents
High-viscosity asphalt modifying agent, preparation method and preparation method of modified asphalt Download PDFInfo
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- CN105820391A CN105820391A CN201610353889.0A CN201610353889A CN105820391A CN 105820391 A CN105820391 A CN 105820391A CN 201610353889 A CN201610353889 A CN 201610353889A CN 105820391 A CN105820391 A CN 105820391A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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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
Abstract
The invention discloses a high-viscosity asphalt modifying agent, a preparation method and a preparation method of modified asphalt .The high-viscosity asphalt modifying agent is prepared from, by mass, 40-70 parts of a thermoplastic styrene butadiene rubber polymer, 15-45 parts of modified styrene butadiene rubber, 5-20 parts of regenerated polyethylene, 10-45 parts of a regenerated ethylene-vinyl acetate copolymer, 0-5 parts of a cross-linking agent and 0-5 parts of a stabilizing agent .The high-viscosity asphalt modifying agent obtained through compositing according to the specific proportion and processing technology can improve the high-low temperature performance and aging resistance of matrix asphalt, is simple in preparation technology and good in economic performance and can prolong the service life of a drainage asphalt pavement by being further applied to paving of the drainage asphalt pavement.
Description
Technical field
The present invention relates to the preparation of a kind of asphalt additive, particularly relate to a kind of high-viscosity bitumen modifier,
Preparation method and the preparation method of modified pitch.
Background technology
Drainage asphalt pavement, also known as penetrated asphalt pavement or porous asphalt pavement, empty after finger pressure is real
Gap rate 15%～about 25%, the Novel asphalt concrete face of drainage channel can be internally formed at compound
Layer, it is substantially single particle size rubble and forms the open gradation Colophonium of skeleton-gap structure according to embedded squeezing mechanism
Compound, uses Asphalt mix for open-graded friction course to make top layer, rainfall penetrates into drain function layer, and leads to
In crossing layer, rainwater is laterally discharged, thus eliminates the road table moisture film bringing many driving detrimental effects,
Significantly improve the safety of rainy day driving, comfortableness.
Its viscosity of asphalt binder used by drainage pavement is relatively low in early days, at the road of heavy traffic
Upper application easily produces more disease, the most gradually to using asphaltum with high viscosity direction to develop.Japan
Conduct in-depth research in this respect, and propose the solution of system, it is thus achieved that certain achievement,
Become the principal mode of its express highway pavement.Asphaltum with high viscosity viscosity is big, and elastic recovery capability is good,
60 DEG C of viscosity are more than 20000Pa.s, it is possible to significantly reduce reflection crack extension, improve the high temperatures of Colophonium
Energy, cryogenic property, Moisture Damage performance, fatigue behaviour.But, owing to depositing between modifying agent and Colophonium
In the difference such as molecular weight, viscosity so that polymer modified asphalt difficulties in dispersion；Simultaneously as mostly
Number modifying agent can be fully compatible with Colophonium, but there is density contrast, causes modified pitch unstable and high
Poor performance at low temperatures, is unsatisfactory for using requirement.
In order to solve the problems referred to above, Chinese patent CN1089349C report employing first by modifying agent with
Colophonium and other compounding ingredient are blended, and are prepared as easily scattered masterbatch in Colophonium, then are disperseed by this masterbatch
In Colophonium, prepare modified pitch.Chinese patent CN200510023227.9 describes a kind of high viscosity
Asphalt modifier, is made up of SBS, Petropols, kieselguhr, though high-temperature behavior has improvement, but
Cryogenic property is poor.Chinese patent CN101538408A discloses a kind of asphaltum with high viscosity and preparation thereof
Method, wherein high-viscosity modified asphalt by 100 parts of No. 70 Colophoniumes, 4～12 parts of thermoplastic elastomers, 2～
80 parts of thermoplastic resins, 1～10 part of compatilizer, 8～40 parts of adjusting adhesives and 0.5～4 part of Comprehensive Preventing are old
Agent forms, and this patent is improved between Colophonium and polymer by adding the compatilizer of high fragrance point content
Compatilizer, by add adjusting adhesive Petropols improve Colophonium viscosity and reduce polymer use
Amount.Chinese patent CN1990563A and CN102093728A individually discloses a kind of asphaltum with high viscosity
Preparation method, the two is also to use to add Petropols, has obtained having good dispersibility and stable
The high-viscosity modified asphalt of property, the addition of polymer and Petropols is the biggest.Chinese patent
CN101613515A discloses a kind of high viscosity high elasticity asphalt modifier and preparation method thereof, this patent
Polymer stability in Colophonium is also improved by adding sulfur.Although these technology are to a certain degree
On solve the problem that high-viscosity asphalt exists, but these asphalt modifiers or bitumen modifying process, also deposit
Failing fully to solve, modifying agent is low to asphalt viscosity and the problem of modified pitch low-temperature stability difference.
Because the defect that above-mentioned existing asphalt modifier exists, the present inventor sets based on being engaged in this series products
Count and manufacture practical experience abundant for many years and Professional knowledge, and coordinate the utilization of scientific principle, actively ground
Study carefully innovation, to founding a kind of novel high-viscosity bitumen modifier, preparation method and the preparation of modified pitch
Method so that it is have more practicality.Through constantly research, design, and through repeatedly study sample and
After improvement, finally create the present invention having practical value.
Summary of the invention
Present invention is primarily targeted at, overcome the defect that existing asphalt modifier exists, and provide
A kind of novel high-viscosity bitumen modifier, preparation method and the preparation method of modified pitch, improve modification drip
Blue or green low-temperature stability, thus more suitable for practicality, and has the value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.Foundation
The high-viscosity bitumen modifier that the present invention proposes, comprises each component of following mass fraction, thermoplasticity butylbenzene
Rubber polymer 40～70 parts, modified styrene butadiene rubber 15～45 parts, regenerated polythene 5～20 parts, regeneration
Ethylene-vinyl acetate copolymer 10～45 parts, cross-linking agent 0～5 parts and stabilizer 0～5 parts.
Further, aforesaid high-viscosity bitumen modifier, described thermoplastic styrene butadiene rubber polymer is
Thermoplasticity butadiene-styrene block copolymer, molecular weight is 300,000-50 ten thousand, for combed, build, line style, star
Any one or the mixture of two kinds in type；When molecular weight is less than 300,000, asphalt viscosity is affected
Less, it is impossible to meet code requirement；When molecular weight is more than 500,000, thermoplastic styrene butadiene rubber can not be molten
Solution is in Colophonium, thus can not be modified Colophonium.
Further, aforesaid high-viscosity bitumen modifier, the molecular weight of described modified styrene butadiene rubber is 5
Ten thousand-50 ten thousand；When molecular weight is less than 50,000, intermolecular interaction is little, and system viscosity is less, right
Asphalt viscosity impact is less, it is impossible to meet code requirement；When molecular weight is more than 500,000, butadiene-styrene rubber
It is deteriorated with bitumen compatibility, is easily separated with Colophonium generation；Wherein butadiene-styrene rubber uses emulsion polymerization
Method is prepared from, and butadiene mass content 30-80%, when butadiene content is less than 30%, and benzene second
Alkene too high levels, it dissolves difficulty in Colophonium, causes polymer the best to the modified effect of Colophonium；
When butadiene content is more than 80%, its styrene-content is too low, to asphalt elasticity and viscosity influence relatively
Little, it is bigger that the later stage produces rut probability.
Further, aforesaid high-viscosity bitumen modifier, described regeneration ethene-vinyl acetate copolymerization
The content of the vinyl acetate in thing is 28-70%；When the mass content of vinyl acetate is less than 28%, can
It is considered as Low Density Polyethylene modified, mainly improves high-temperature behavior (such as softening point and viscosity), low to it
Temperature performance improvement is inconspicuous；Viscosity when vinyl acetate content is higher than 70%, after material itself is melted
Relatively big, modified effect is preferable, but processes difficulties in dispersion in Colophonium, affects construction quality.
Further, aforesaid high-viscosity bitumen modifier, described stabilizer is that secondary diarylamine class resists
Oxygen agent, p-phenylenediamine kind antioxidant, aldehyde-amine condensate kind antioxidant or ketoamine condensation substance kind antioxidant.
Further, aforesaid high-viscosity bitumen modifier, described regenerated polythene is that high density is gathered
Ethylene, Low Density Polyethylene, linear low density polyethylene one of which or any two kinds of mixture；Hand over
Sulfur is selected in connection agent.
Further, the preparation method of aforesaid high-viscosity bitumen modifier, including following operating procedure,
(1) by thermoplastic styrene butadiene rubber polymer, modified styrene butadiene rubber, regenerated polythene, regeneration second
Alkene-acetate ethylene copolymer, cross-linking agent and stabilizer raw material, in corresponding ratio mix homogeneously, add
Pulverizer is pulverized；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, cut short pelletize, be dried,
To target product.
Further, the preparation method of aforesaid high-viscosity bitumen modifier, described prilling temperature is
60 DEG C～250 DEG C.
Apply the method that aforesaid high-viscosity bitumen modifier prepares modified pitch, including following operating procedure,
(1) matrix pitch is heated to 150 DEG C～160 DEG C, then high-viscosity bitumen modifier is added base
Matter Colophonium stirs, obtains mixture；
(2) mixture that (1) prepares is heated to 170 DEG C～190 DEG C, then high speed shear
45min～60min, the mixture after shearing is grown 1h～4h, is obtained target product.
Further, the preparation method of aforesaid modified pitch, in described (1), high-viscosity asphalt is modified
The quality of agent is the 2%～16% of matrix pitch quality.
Further, the preparation method of aforementioned modified Colophonium, described target product is that 60 DEG C of power glue
Degree is not less than the high adhered modification Colophonium of 20000Pa s.
By technique scheme, the high-viscosity bitumen modifier of the present invention, preparation method and modified pitch
Preparation method at least have the advantage that
The present invention uses thermoplastic styrene butadiene rubber polymer, modified styrene butadiene rubber, regenerated polythene, again
Raw ethylene-vinyl acetate copolymer, cross-linking agent and stabilizer prepare high-viscosity bitumen modifier as raw material,
Wherein thermoplastic styrene butadiene rubber and modified styrene butadiene rubber are as elastic reinforcing agent, and regenerated polythene and ethylene-
Acetate ethylene copolymer is as viscosity thickener, and its dissolubility in Colophonium is good, low cost, and energy
Comprehensively improve high and low temperature performance and the ageing-resistant performance of Colophonium；Use this high-viscosity bitumen modifier system
Standby high adhered modification asphalt applications is in the making of porous asphalt pavement, it is possible to be effectively improved drainage asphalt
The antioxidation of road surface binder and ageing resistace, preparation technology is simple and better economy, improves
Service life of porous asphalt pavement.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention
After describing in detail such as.
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention,
To according to the present invention propose high-viscosity bitumen modifier, preparation method and modified pitch preparation method its
Detailed description of the invention, feature and effect thereof, after describing in detail such as.
Embodiment 1
The composition of high-viscosity bitumen modifier is as follows: thermoplastic styrene butadiene rubber polymer 42wt% part, for line
Property and the mixture of star-like two kinds, weight average molecular weight is 300,000；Modified styrene butadiene rubber 26wt% part is wherein
Polybutadiene content 34%；Regenerated polythene 8wt%, for low density linear polyethylene；Regeneration ethylene-
Acetate ethylene copolymer 18wt%, in regeneration ethylene-vinyl acetate copolymer, the content of vinyl acetate is
48%；Sulfur cross-linking agent 3wt% and secondary diarylamine class antioxidant stabilizer 3wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 30, and the rotating speed of screw rod is 40rpm；
Prilling temperature is 80 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 150 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
12%；
(2) somewhat mixture in (1) is heated to 180 DEG C, is then 4800r/min in shear rate
Under conditions of shear 50min, after shearing, mixture is grown under conditions of temperature 180 DEG C 3h, obtains
High adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 1 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 1:
The technical specification test result of the high adhered modification Colophonium of table 1 embodiment 1 preparation
The Specifications of the high-viscosity modified asphalt compound of embodiment 1 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 2；
The technical specification test result of the high adhered modification asphalt of table 2 embodiment 1 preparation
| Index | Unit | Embodiment 1 | TPS modified pitch | Technology requirement |
| Porosity | % | 21.56 | 20.51 | 18-25 |
| Leakage analysis losing | % | 0 | 0.01 | <0.3 |
| Disperse loss | % | 7.56 | 11.57 | <20 |
| Marshall stability | kN | 3.92 | 2.82 | ≥3.5 |
| Freeze-thaw split strength ratio | % | 85.3 | 79.4 | ≥80 |
| Dynamic stability | Secondary | 12000 | 9547 | ≥6000 |
As can be seen from Table 1 and Table 2, the height that prepared by Application Example 1 high-viscosity bitumen modifier glues
Modified pitch and compound indices are satisfied by technology requirement, and its all technical is better than current city
Field preferably product Japan TPS.
Embodiment 2
The composition of high-viscosity bitumen modifier is as follows: thermoplastic styrene butadiene rubber polymer 50wt% part, thermoplastic
Property butadiene-styrene rubber be linear and star-like two kinds of mixture, weight average molecular weight is 400,000；Modified styrene butadiene rubber
20wt% part, molecular weight is 200,000, wherein polybutadiene content 40%；Regenerated polythene 12wt%,
Regenerated polythene is high-density linear polyethylene, regenerates ethylene-vinyl acetate copolymer 15wt%, regeneration
In ethylene-vinyl acetate copolymer, the content of vinyl acetate is 60%；Sulfur cross-linking agent 2wt% and right
Phenylenediamine antioxidant stabilizer 1wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 35, and the rotating speed of screw rod is 60rpm；
Prilling temperature is 100 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 155 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
6%；
(2) mixture in (1) is heated to 175 DEG C, is then 4600r/min in shear rate
Under conditions of shear 55min, after shearing, mixture is grown under conditions of temperature is 175 DEG C 2h, must
To high adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 2 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 3:
The technical specification test result of the high adhered modification Colophonium of table 3 embodiment 2 preparation
| Index | Unit | Embodiment 2 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 106.8 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 42.4 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 86.3 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa.s | 246284 | 20604 | ≥20000 |
| Stability | ℃ | 0.06 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 2 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 4；
The technical specification test result of the high adhered modification asphalt of table 4 embodiment 2 preparation
It can be seen that height prepared by the high adhered modification agent of Application Example 2 glues and changes from table 3 and table 4
Property Colophonium and its compound all technical are satisfied by technology requirement, and its all technical is better than
Existing market best product Japan TPS.
Embodiment 3
The composition of high-viscosity bitumen modifier is as follows: thermoplastic styrene butadiene rubber polymer 53wt% part, thermoplastic
Property butadiene-styrene rubber be linear and star-like two kinds of mixture, weight average molecular weight is 350,000；Modified styrene butadiene rubber
30wt% part, modified styrene butadiene rubber molecular weight is 400,000, wherein polybutadiene content 45%；Regeneration is poly-
Ethylene 5wt%, regenerated polythene is linea low density linear polyethylene；Regeneration ethene-vinyl acetate is altogether
Polymers 8wt%, in regeneration ethylene-vinyl acetate copolymer, the content of vinyl acetate is 50%；Sulfur is handed over
Connection agent 2wt% and aldimine condensation species antioxidant stabilizer 2wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 40, and the rotating speed of screw rod is 80rpm；
Prilling temperature is 120 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 160 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
15%；
(2) mixture in (1) is heated to 185 DEG C, is then 4500r/min in shear rate
Under conditions of shear 45min, after shearing, mixture is grown under conditions of temperature is 185 DEG C 2.5h,
Obtain high adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 3 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 5:
The technical specification test result of the high adhered modification Colophonium of table 5 embodiment 3 preparation
| Index | Unit | Embodiment 3 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 102.8 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 43.0 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 84.2 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa·s | 21624 | 20604 | ≥20000 |
| Stability | ℃ | 0.07 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 3 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 6；
The technical specification test result of the high adhered modification asphalt of table 6 embodiment 3 preparation
| Index | Unit | Embodiment 2 | TPS modified pitch | Technology requirement |
| Porosity | % | 22.36 | 20.51 | 18-25 |
| Leakage analysis losing | % | 0.01 | 0.01 | <0.3 |
| Disperse loss | % | 7.42 | 11.57 | <20 |
| Marshall stability | kN | 4.12 | 2.82 | ≥3.5 |
| Freeze-thaw split strength ratio | % | 86.8 | 79.4 | ≥80 |
| Dynamic stability | Secondary | 12234 | 9547 | ≥6000 |
It can be seen that height prepared by the high adhered modification agent of Application Example 3 glues and changes from table 5 and table 6
Property Colophonium and its compound all technical are satisfied by technology requirement, and its all technical is better than
Existing market best product Japan TPS.
Embodiment 4
High-viscosity bitumen modifier composition is as follows: thermoplastic styrene butadiene rubber polymer 50wt% part, thermoplasticity
Butadiene-styrene rubber is linear and star-like two kinds of mixture, and weight average molecular weight is 450,000；Modified styrene butadiene rubber
25wt% part, modified styrene butadiene rubber molecular weight is 100,000, wherein polybutadiene content 50%；Regeneration is poly-
Ethylene 5wt%, regenerated polythene is low density linear polyethylene and high density polyethylene (HDPE) 2:3 mixture,
Regeneration ethylene-vinyl acetate copolymer 15wt%, vinyl acetate in regeneration ethylene-vinyl acetate copolymer
Content is 30%；Sulfur cross-linking agent 3wt% and ketoamine condensation species antioxidant stabilizer 2wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 45, and the rotating speed of screw rod is 100rpm；
Prilling temperature is 150 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 150 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
8%；
(2) mixture in (1) is heated to 180 DEG C, is then 4700r/min in shear rate
Under conditions of shear 60min, after shearing, mixture is grown under conditions of temperature is 175 DEG C 3.5h,
Obtain high adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 4 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 7:
The technical specification test result of the high adhered modification Colophonium of table 7 embodiment 4 preparation
| Index | Unit | Embodiment 4 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 112.4 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 43.4 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 90.3 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa·s | 266832 | 20604 | ≥20000 |
| Stability | ℃ | 0.08 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 4 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 8；
The technical specification test result of the high adhered modification asphalt of table 8 embodiment 4 preparation
| Index | Unit | Embodiment 4 | TPS modified pitch | Technology requirement |
| Porosity | % | 23.56 | 20.51 | 18-25 |
| Leakage analysis losing | % | 0 | 0.01 | <0.3 |
| Disperse loss | % | 7.56 | 11.57 | <20 |
| Marshall stability | kN | 3.92 | 2.82 | ≥3.5 |
| Freeze-thaw split strength ratio | % | 86.3 | 79.4 | ≥80 |
| Dynamic stability | Secondary | 13020 | 9547 | ≥6000 |
It can be seen that height prepared by the high adhered modification agent of Application Example 4 glues and changes from table 7 and table 8
Property Colophonium and its compound all technical are satisfied by technology requirement, and its all technical is better than
Existing market best product Japan TPS.
Embodiment 5
High-viscosity bitumen modifier composition is as follows: thermoplastic styrene butadiene rubber polymer 60wt% part, thermoplasticity
Butadiene-styrene rubber is linear and star-like two kinds of mixture, and weight average molecular weight is 500,000；Modified styrene butadiene rubber
15wt% part, modified styrene butadiene rubber molecular weight is 250,000, wherein polybutadiene content 30%；Regeneration is poly-
Ethylene 10wt% part, regenerated polythene is low density linear polyethylene；Regeneration ethene-vinyl acetate copolymerization
Thing 12wt%, in regeneration ethylene-vinyl acetate copolymer, the content of vinyl acetate is 35%；Sulfur cross-linking
Agent 1wt% and aldimine condensation species antioxidant stabilizer 2wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 50, and the rotating speed of screw rod is 120rpm；
Prilling temperature is 180 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 155 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
18%；
(2) mixture in (1) is heated to 175 DEG C, is then 4800r/min in shear rate
Under conditions of shear 55min, after shearing, mixture is grown under conditions of temperature is 180 DEG C 2h, must
To high adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 5 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 9:
The technical specification test result of the high adhered modification Colophonium of table 9 embodiment 5 preparation
| Index | Unit | Embodiment 5 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 106.8 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 46.0 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 86.2 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa·s | 24674 | 20604 | ≥20000 |
| Stability | ℃ | 0.06 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 5 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 10；
The technical specification test result of the high adhered modification asphalt of table 10 embodiment 5 preparation
It can be seen that height prepared by the high adhered modification agent of Application Example 5 glues and changes from table 9 and table 10
Property Colophonium and its compound all technical are satisfied by technology requirement, and its all technical is better than
Existing market best product Japan TPS.
Embodiment 6
High-viscosity bitumen modifier composition is as follows: thermoplastic styrene butadiene rubber polymer 65wt% part, thermoplasticity
Butadiene-styrene rubber is linear and star-like two kinds of mixture, and weight average molecular weight is 350,000；Modified styrene butadiene rubber
15wt% part, modified styrene butadiene rubber molecular weight is 150,000, wherein polybutadiene content 40%；Regeneration is poly-
Ethylene 5wt%, regenerated polythene is high-density linear polyethylene；Regeneration ethylene-vinyl acetate copolymer
10wt%, in regeneration ethylene-vinyl acetate copolymer, the content of vinyl acetate is 40%；Sulfur cross-linking agent
3wt% and secondary diarylamine class antioxidant stabilizer 2wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 45, and the rotating speed of screw rod is 150rpm；
Prilling temperature is 200 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 160 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
15%；
(2) mixture in (1) is heated to 185 DEG C, is then 4600r/min's in shear rate
Under the conditions of shear 45min, after shearing, mixture is grown under conditions of temperature is 185 DEG C 3h, obtains
High adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 6 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 11:
The technical specification test result of the high adhered modification Colophonium of table 11 embodiment 6 preparation
| Index | Unit | Embodiment 6 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 109.8 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 43.4 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 89.3 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa·s | 246872 | 20604 | ≥20000 |
| Stability | ℃ | 0.09 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 6 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 12；
The technical specification test result of the high adhered modification asphalt of table 12 embodiment 6 preparation
| Index | Unit | Embodiment 6 | TPS modified pitch | Technology requirement |
| Porosity | % | 23.18 | 26.51 | 18-25 |
| Leakage analysis losing | % | 0 | 0.01 | <0.3 |
| Disperse loss | % | 7.56 | 8.97 | <20 |
| Marshall stability | kN | 4.42 | 4.52 | ≥3.5 |
| Freeze-thaw split strength ratio | % | 89.3 | 86.4 | ≥80 |
| Dynamic stability | Secondary | 156400 | 10987 | ≥6000 |
It can be seen that height prepared by the high adhered modification agent of Application Example 6 glues from table 11 and table 12
Modified pitch and its compound all technical are satisfied by technology requirement, and its all technical is excellent
In existing market best product Japan TPS.
Embodiment 7
High-viscosity bitumen modifier component is as follows: thermoplastic styrene butadiene rubber polymer 48wt% part, thermoplasticity
Butadiene-styrene rubber is linear and star-like two kinds of mixture, and weight average molecular weight is 400,000；Modified styrene butadiene rubber
25wt% part, modified styrene butadiene rubber molecular weight is 300,000, wherein polybutadiene content 35%；Regeneration is poly-
Ethylene 12wt%, regenerated polythene is low density linear polyethylene and the mixing of linear low density polyethylene 1:2
Thing；Regeneration ethylene-vinyl acetate copolymer 12wt%, acetic acid second in regeneration ethylene-vinyl acetate copolymer
The content of alkene is 45%；Sulfur cross-linking agent 1wt% and p-phenylenediamine class antioxidant stabilizer agent 2wt%.
The preparation method of high-viscosity bitumen modifier, comprises the steps:
(1) by each component in corresponding ratio mix homogeneously, add pulverizer, match liquid nitrogen container liquid
Nitrogen is lowered the temperature, and carries out low-temperature grinding；
(2) blending ingredients after pulverizing is mixing, by squeezing by carrying out in funnel entrance screw extruder
Go out machine extrusion molding, cool down through cold rinse bank, draw to comminutor, shear rate is set, cuts short
Pelletize, is dried, and wherein in screw extruder, the draw ratio of screw rod is 40, and the rotating speed of screw rod is 130rpm；
Prilling temperature is 250 DEG C.
The method preparing high adhered modification Colophonium comprises the following steps:
(1) matrix pitch is heated to 150 DEG C, then high-viscosity bitumen modifier is added matrix pitch
In stir, obtain mixture, wherein the quality of high-viscosity bitumen modifier is matrix pitch quality
5%；
(2) mixture in (1) is heated to 180 DEG C, is then 4700r/min in shear rate
Under conditions of shear 50min, after shearing, described mixture is grown under conditions of temperature is 185 DEG C
2h, obtains high adhered modification Colophonium.
The Specifications of high-viscosity modified asphalt of embodiment 7 preparation is tested, and with adopt
The TPS modified pitch prepared by conventional method contrasts, and test result is shown in Table 13:
The technical specification test result of the high adhered modification Colophonium of table 13 embodiment 7 preparation
| Index | Unit | Embodiment 7 | TPS modified pitch | Technology requirement |
| Softening point (TR&B) | ℃ | 102.8 | 104.8 | ≥80 |
| Needle penetration (25 DEG C, 100g, 5g) | 0.1mm | 46.0 | 48.0 | ≥40 |
| 15 DEG C of ductilities | cm | 81.2 | 81.2 | ≥50 |
| 60 DEG C of dynamic viscosities | Pa·s | 20604 | 20604 | ≥20000 |
| Stability | ℃ | 0.10 | 1.2 | ≤2 |
The Specifications of the high-viscosity modified asphalt compound of embodiment 7 preparation is tested,
And contrast with the TPS modified asphalt mixture performance using conventional method to prepare, test result is shown in
Table 14；
The technical specification test result of the high adhered modification asphalt of table 14 embodiment 7 preparation
| Index | Unit | Embodiment 7 | TPS modified pitch | Technology requirement |
| Porosity | % | 24.56 | 26.51 | 18-25 |
| Leakage analysis losing | % | 0.01 | 0.01 | <0.3 |
| Disperse loss | % | 8.12 | 8.97 | <20 |
| Marshall stability | kN | 4.69 | 4.52 | ≥3.5 |
| Freeze-thaw split strength ratio | % | 87.4 | 86.4 | ≥80 |
| Dynamic stability | Secondary | 161100 | 10987 | ≥6000 |
It can be seen that height prepared by the high adhered modification agent of Application Example 7 glues from table 13 and table 14
Modified pitch and its compound all technical are satisfied by technology requirement, and its all technical is excellent
In existing market best product Japan TPS.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any form
On restriction, although the present invention is disclosed above with preferred embodiment, but is not limited to this
Bright, any those skilled in the art, in the range of without departing from technical solution of the present invention, when can profit
Make a little change with the technology contents of the disclosure above or be modified to the Equivalent embodiments of equivalent variations, but
Every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention is to above example
Any simple modification, equivalent variations and the modification made, all still falls within the scope of technical solution of the present invention
In.
Claims (10)
1. a high-viscosity bitumen modifier, it is characterized in that: each component comprising following mass fraction, 40 ~ 70 parts of thermoplastic styrene butadiene rubber polymer, modified styrene butadiene rubber 15 ~ 45 parts, regenerated polythene 5 ~ 20 parts, regeneration ethylene-vinyl acetate copolymer 10 ~ 45 parts, cross-linking agent 0 ~ 5 part and stabilizer 0 ~ 5 part.
High-viscosity bitumen modifier the most according to claim 1, it is characterized in that: described thermoplastic styrene butadiene rubber polymer is thermoplasticity butadiene-styrene block copolymer, molecular weight is 300,000-50 ten thousand, for combed, build, line style, star-like in any one one or both mixture.
High-viscosity bitumen modifier the most according to claim 1, it is characterised in that: the molecular weight of described modified styrene butadiene rubber is 50,000-50 ten thousand.
High-viscosity bitumen modifier the most according to claim 1, it is characterised in that: the content of the described vinyl acetate in regeneration ethylene-vinyl acetate copolymer is 28-70%.
5. according to the high-viscosity bitumen modifier described in any one of claim 1 ~ 4, it is characterised in that: described stabilizer is secondary diarylamine kind antioxidant, p-phenylenediamine kind antioxidant, aldehyde-amine condensate kind antioxidant or ketoamine condensation substance kind antioxidant.
6. the preparation method of the high-viscosity bitumen modifier described in claim 1, it is characterised in that: include following operating procedure,
(1) by thermoplastic styrene butadiene rubber polymer, modified styrene butadiene rubber, regenerated polythene, regeneration ethylene-vinyl acetate copolymer, cross-linking agent and stabilizer raw material in corresponding ratio mix homogeneously, add pulverizer and pulverize；
(2) blending ingredients after pulverizing is mixing by carrying out in funnel entrance screw extruder, by extruder for shaping, cools down through cold rinse bank, draws to comminutor, cut short pelletize, is dried, obtains target product.
The preparation method of high-viscosity bitumen modifier the most according to claim 6, it is characterised in that: described prilling temperature is 60 DEG C～250 DEG C.
8. the method that application high-viscosity bitumen modifier described in claim 1 prepares modified pitch, it is characterised in that: include following operating procedure,
(1) matrix pitch is heated to 150 DEG C～160 DEG C, then high-viscosity bitumen modifier is added in matrix pitch and stir, obtain mixture；
(2) mixture that (1) prepares being heated to 170 DEG C～190 DEG C, then high speed shear 45min～60min, the mixture after shearing is grown 1h～4h, is obtained target product.
The preparation method of modified pitch the most according to claim 8, it is characterised in that: in described (1) quality is matrix pitch quality 2%～the 16% of high-viscosity bitumen modifier.
The preparation method of modified pitch the most according to claim 8 or claim 9, it is characterised in that: described target product is the high adhered modification Colophonium that 60 DEG C of dynamic viscosities are not less than 20000Pa s.
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| CN107118574A (en) * | 2017-01-16 | 2017-09-01 | 深圳市天之泰道路材料有限公司 | A kind of graininess asphalt modifier with high viscosity and preparation method thereof |
| CN107189470A (en) * | 2017-07-20 | 2017-09-22 | 深圳市市政工程总公司 | A kind of modified high-viscosity asphalt and preparation method thereof |
| CN108047735A (en) * | 2018-01-24 | 2018-05-18 | 山东建筑大学 | A kind of low rolling resistance modified pitch and preparation method thereof |
| CN109265054A (en) * | 2018-09-08 | 2019-01-25 | 平湖市中建沥青混凝土工程有限公司 | Ultra-thin wearing layer bituminous mixture and preparation method thereof |
| CN114479486A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Asphalt anti-stripping agent and preparation method and application thereof |
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| CN106633250A (en) * | 2016-09-29 | 2017-05-10 | 江苏中路新材料科技发展有限公司 | High-viscosity warm asphalt modifier and preparation method for modified asphalt |
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| CN107118574A (en) * | 2017-01-16 | 2017-09-01 | 深圳市天之泰道路材料有限公司 | A kind of graininess asphalt modifier with high viscosity and preparation method thereof |
| CN107189470A (en) * | 2017-07-20 | 2017-09-22 | 深圳市市政工程总公司 | A kind of modified high-viscosity asphalt and preparation method thereof |
| CN108047735A (en) * | 2018-01-24 | 2018-05-18 | 山东建筑大学 | A kind of low rolling resistance modified pitch and preparation method thereof |
| CN108047735B (en) * | 2018-01-24 | 2020-05-22 | 山东建筑大学 | Low rolling resistance modified asphalt and preparation method thereof |
| CN109265054A (en) * | 2018-09-08 | 2019-01-25 | 平湖市中建沥青混凝土工程有限公司 | Ultra-thin wearing layer bituminous mixture and preparation method thereof |
| CN114479486A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Asphalt anti-stripping agent and preparation method and application thereof |
| CN115011129A (en) * | 2022-04-19 | 2022-09-06 | 中油路之星新材料有限公司 | USP multifunctional composite regenerated modified asphalt mixture and preparation method thereof |
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