CN106280507A - A kind of NEW TYPE OF COMPOSITE modified pitch and preparation method thereof - Google Patents
A kind of NEW TYPE OF COMPOSITE modified pitch and preparation method thereof Download PDFInfo
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- CN106280507A CN106280507A CN201610679076.0A CN201610679076A CN106280507A CN 106280507 A CN106280507 A CN 106280507A CN 201610679076 A CN201610679076 A CN 201610679076A CN 106280507 A CN106280507 A CN 106280507A
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- composite modified
- new type
- modified pitch
- pitch
- sulfur doping
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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
- C08L2312/00—Crosslinking
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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
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/50—Inorganic non-macromolecular ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/50—Inorganic non-macromolecular ingredients
- C08L2555/54—Sulfur or carbon black
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of NEW TYPE OF COMPOSITE modified pitch and preparation method thereof, belong to pavement construction material technical field.Technical scheme main points are: a kind of NEW TYPE OF COMPOSITE modified pitch, the raw material of following weight percentage be prepared from: sulfur doping Graphene 1%～10%, accelerator 1%～5%, waste Crumb rubber 15%～30%, and surplus is matrix pitch.The invention also discloses the preparation method of this composite modified asphalt.The present invention utilizes sulfur doping Graphene as cross-linking agent and modifying agent, on the one hand play crosslinked action by the sulphur atom in sulfur doping graphene molecules structure and improve the degree of cross linking between each component material of modified pitch, on the other hand it is modified being imparted in modified pitch the structural behaviour of Graphene to Colophonium by the good physical behavior of sulfur doping Graphene, the final composite modified asphalt preparing function admirable.
Description
Technical field
The invention belongs to pavement construction material technical field, be specifically related to a kind of NEW TYPE OF COMPOSITE modified pitch and preparation side thereof
Method.
Background technology
Along with the development of auto industry, substantial amounts of tire goes out of use, and waste tire is processed into waste Crumb rubber and is applied to drip
In blue or green modification, not only the high and low temperature performance to Colophonium has bigger improvement, and can also reduce cost of paving the way, it is achieved following of resource
Ring utilizes.In the waste Crumb rubber technique to asphalt modification, presently, there are the technical problem of some keys, such as waste Crumb rubber and
Mainly exist with physical blending form between Colophonium, owing to rubber macromolecule is not enough with the matrix pitch compatibility, modified pitch
Storage stability is not enough, has had a strong impact on performance of modified bitumen.Provided that substantial amounts of heat meets waste Crumb rubber and Colophonium
Between cross-linking reaction, then need higher reaction temperature, ageing of asphalt and waste Crumb rubber can be caused the most again
Excessive degradation, cause the serious decay of performance of modified bitumen.
In order to give full play to the waste Crumb rubber modifying function to Colophonium, some technical measures are used for improving waste Crumb rubber at present
Stability in Colophonium.Such as, organic solvent is used to improve waste Crumb rubber in Colophonium in modified pitch technological process
The compatibility, or utilize coupling agent to improve the interface interaction of waste Crumb rubber and Colophonium.But the use of these auxiliary agents, the most often
The introducing that easy band serves counter productive, organic solvent or coupling agent is easy to play plastication, weakens rubber powder pair
The modified effect of Colophonium, and these auxiliary agents added, itself does not possess modified function, it is impossible to play collaborative changing with waste Crumb rubber
Property effect.
Graphene is emerging functional material, in graphene-structured each carbon atom by the strongest σ key with other 3
Carbon atom is connected, and these carbon-to-carbons σ key causes graphene sheet layer to have extremely excellent mechanical property and structural rigidity, in order to
Improving Electronic Performance and the chemism of Graphene, some products that Graphene is doped modification the most gradually obtain research should
With.Sulfur doping Graphene is exactly a kind of material that sulphur atom is present in Graphene lattice structure that adulterates, and doping sulphur atom has
Certain chemical property, therefore sulfur doping Graphene had both remained the mechanical property of Graphene, had again certain chemism,
It is expected to be applied in numerous areas.
Summary of the invention
Present invention solves the technical problem that there is provided a kind of there is preferable pavement performance and good new of storage stability
Type composite modified asphalt, and the invention provides the preparation method of a kind of NEW TYPE OF COMPOSITE modified pitch, the present invention utilizes sulfur to mix
Miscellaneous Graphene, as cross-linking agent and modifying agent, on the one hand plays crosslinking by the sulphur atom in sulfur doping graphene molecules structure and makees
By the degree of cross linking that improve between each component material of modified pitch, on the other hand by the good physical behavior of sulfur doping Graphene
It is modified Colophonium being imparted in modified pitch the structural behaviour of Graphene, the final composite modified drip preparing function admirable
Blue or green.
The present invention solves that above-mentioned technical problem adopts the following technical scheme that, a kind of NEW TYPE OF COMPOSITE modified pitch, its feature
It is to be prepared from by the raw material of following weight percentage:
Sulfur doping Graphene 1%～10%,
Accelerator 1%～5%,
Waste Crumb rubber 15%～30%,
Surplus is matrix pitch,
Wherein accelerator is 2-benzothiazolyl mercaptan, zinc 2-mercaptobenzothiazole salt, dibenzothiazyl disulfide, 4,4'-
One or more in dimorpholinyl disulfide, diphenylguanidine, tetramethylthiuram disulfide or thioresorcin bithiophene.
Further preferably, the mesh number of described waste Crumb rubber is 40 mesh, 60 mesh or 80 mesh.
The preparation method of NEW TYPE OF COMPOSITE modified pitch of the present invention, it is characterised in that concretely comprise the following steps: according to above-mentioned
Weight percent proportioning weighs raw material respectively, first adds heat fusing matrix pitch, and keeping temperature is 130～150 DEG C, adds sulfur doping
Graphene also carries out mechanical agitation 2～6h, then be warming up to 160～180 DEG C, then adds waste Crumb rubber under stirring, with
After be cooled to 120～150 DEG C keep 1～4h, treat that it is the most swelling, continue carry out shearing 0.5～1h on high-speed shearing machine, cut
Cutting temperature is 120～150 DEG C, then heats to 160～180 DEG C, after temperature stabilization, adds accelerator while stirring, promotes
After agent adds, continue insulated and stirred 0.5～1h, final prepared NEW TYPE OF COMPOSITE modified pitch.
The innovative point of the present invention and it is a technical advantage that:
1, the present invention uses sulfur doping Graphene can cause sulfur doping as cross-linking agent, the doping sulphur atom in graphene-structured
Cross-linking reaction between Graphene, waste rubber powder and matrix pitch so that the multicomponent material group in composite modified asphalt product
Divide crosslinking to become space network, be greatly improved the storage stability of modified pitch；
2, the present invention passes through cross-linking reaction, and graphene-structured is grafted on asphaltene molecule chain, imparts the power that modified pitch is good
Learn performance, it is achieved that the essence chemical modification to asphalt performance；
3, graphene-structured has good strength character, and waste Crumb rubber has good viscoelasticity, and the present invention utilizes sulfur doping
Matrix pitch is carried out composite modified with waste Crumb rubber by Graphene, it is possible to play the modified synergic of " coordination of potent and mild therapies " in microcosmic point
Effect；
4, the composite modified asphalt technological operation that the present invention provides is easy, and need not excessive temperature, has both saved the energy, has had again
Effect avoids the Performance Decay of modified pitch.
Detailed description of the invention
By the following examples the foregoing of the present invention is described in further details, but this should be interpreted as this
The scope inventing above-mentioned theme is only limitted to below example, and all technology realized based on foregoing of the present invention belong to this
Bright scope.
Embodiment 1
First heating 790g melts matrix pitch, and keeping temperature is 130 DEG C, adds 10g sulfur doping Graphene and carries out machinery and stir
Mix 2h, then be warming up to 160 DEG C, under stirring, then add the waste Crumb rubber of 150g 80 mesh, be cooled to 120 DEG C of guarantors subsequently
Holding 1h so that it is the most swelling, continue to carry out shearing 0.5h on high-speed shearing machine, shear temperature is 120 DEG C, is next warming up to
160 DEG C, after temperature stabilization, adding 50g 2-benzothiazolyl mercaptan while stirring, 2-benzothiazolyl mercaptan adds complete
After, continue insulated and stirred 0.5h, final prepared NEW TYPE OF COMPOSITE modified pitch.
The pavement performance detection method of composite modified asphalt is with reference to " highway engineering Colophonium and asphalt Experimental Procedures "
JTGE20-2011 is carried out, and test result is shown in Table 1.
Embodiment 2
First heating 700g melts matrix pitch, and keeping temperature is 140 DEG C, adds 50g sulfur doping Graphene and carries out machinery and stir
Mix 4h, then be warming up to 170 DEG C, under stirring, then add the waste Crumb rubber of 220g 60 mesh, be cooled to 145 DEG C of guarantors subsequently
Holding 3h so that it is the most swelling, continue to carry out shearing 0.8h on high-speed shearing machine, shear temperature is 145 DEG C, is next warming up to
170 DEG C, after temperature stabilization, adding 45g 4 while stirring, 4'-dimorpholinyl disulfide, 4,4'-dimorpholinyl disulfides have added
Bi Hou, continues insulated and stirred 0.6h, final prepared NEW TYPE OF COMPOSITE modified pitch.
The pavement performance detection method of composite modified asphalt is with reference to " highway engineering Colophonium and asphalt Experimental Procedures "
JTGE20-2011 is carried out, and test result is shown in Table 1.
Embodiment 3
First heating 590g melts matrix pitch, and keeping temperature is 150 DEG C, adds 100g sulfur doping Graphene and carries out machinery and stir
Mix 6h, then be warming up to 180 DEG C, under stirring, then add the waste Crumb rubber of 300g 40 mesh, be cooled to 150 DEG C of guarantors subsequently
Holding 4h so that it is the most swelling, continue to carry out shearing 1h on high-speed shearing machine, shear temperature is 150 DEG C, is next warming up to
180 DEG C, after temperature stabilization, add 60g diphenylguanidine while stirring, after diphenylguanidine adds, continue insulated and stirred 1h, finally
Prepare NEW TYPE OF COMPOSITE modified pitch.
The pavement performance detection method of composite modified asphalt is with reference to " highway engineering Colophonium and asphalt Experimental Procedures "
JTGE20-2011 is carried out, and test result is shown in Table 1.
Table 1 composite modified asphalt the performance test results
| Index | Softening point (DEG C) | 5 DEG C of ductilities (cm) | Elastic return (%) |
| Embodiment 1 | 62 | 36 | 82 |
| Embodiment 2 | 75 | 48 | 87 |
| Embodiment 3 | 81 | 55 | 92 |
Embodiment above describes the ultimate principle of the present invention, principal character and advantage, skilled person will appreciate that of the industry,
The present invention is not restricted to the described embodiments, the principle that the present invention is simply described described in above-described embodiment and description,
Without departing under the scope of the principle of the invention, the present invention also has various changes and modifications, and these changes and improvements each fall within this
In the range of bright protection.
Claims (3)
1. a NEW TYPE OF COMPOSITE modified pitch, it is characterised in that be prepared from by the raw material of following weight percentage:
Sulfur doping Graphene 1%～10%,
Accelerator 1%～5%,
Waste Crumb rubber 15%～30%,
Surplus is matrix pitch,
Wherein accelerator is 2-benzothiazolyl mercaptan, zinc 2-mercaptobenzothiazole salt, dibenzothiazyl disulfide, 4,4'-
One or more in dimorpholinyl disulfide, diphenylguanidine, tetramethylthiuram disulfide or thioresorcin bithiophene.
NEW TYPE OF COMPOSITE modified pitch the most according to claim 1, it is characterised in that: the mesh number of described waste Crumb rubber is 40
Mesh, 60 mesh or 80 mesh.
3. the preparation method of a NEW TYPE OF COMPOSITE modified pitch, it is characterised in that concretely comprise the following steps: according to the weight in claim 1
Amount per distribution ratio weighs raw material respectively, first adds heat fusing matrix pitch, and keeping temperature is 130～150 DEG C, adds sulfur doping stone
Ink alkene also carries out mechanical agitation 2～6h, then be warming up to 160～180 DEG C, then adds waste Crumb rubber under stirring, subsequently
It is cooled to 120～150 DEG C and keeps 1～4h, treat that it is the most swelling, continue to carry out shearing on high-speed shearing machine 0.5～1h, shear
Temperature is 120～150 DEG C, then heats to 160～180 DEG C, after temperature stabilization, adds accelerator, accelerator while stirring
After addition, continue insulated and stirred 0.5～1h, final prepared NEW TYPE OF COMPOSITE modified pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679076.0A CN106280507B (en) | 2016-08-17 | 2016-08-17 | A kind of composite modified asphalt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679076.0A CN106280507B (en) | 2016-08-17 | 2016-08-17 | A kind of composite modified asphalt and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106280507A true CN106280507A (en) | 2017-01-04 |
| CN106280507B CN106280507B (en) | 2019-04-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559289A (en) * | 2018-05-14 | 2018-09-21 | 重庆路维康交通科技有限公司 | A kind of nano modification emulsified asphalt and its preparation and application |
| CN108690360A (en) * | 2018-06-20 | 2018-10-23 | 广西大学 | Graphene compound rubber asphalt modifying agent and its preparation method and application |
| CN110144128A (en) * | 2019-06-13 | 2019-08-20 | 安徽省高等级公路工程监理有限公司 | A kind of superelevation durable express highway pavement modified pitch mixing material |
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| CN103694717A (en) * | 2013-12-30 | 2014-04-02 | 上海浦东路桥建设股份有限公司 | Road bitumen with high heat conduction efficiency and preparation method thereof |
| CN103819915A (en) * | 2014-02-26 | 2014-05-28 | 西安理工大学 | Graphene oxide modified asphalt and preparation method thereof |
| CN103834185A (en) * | 2014-02-26 | 2014-06-04 | 西安理工大学 | Polyurethane/nano-composite modified asphalt and preparation method thereof |
| CN104448868A (en) * | 2015-01-06 | 2015-03-25 | 山西省交通科学研究院 | SBS modified asphalt based on graphene oxide and preparing method thereof |
| CN105176086A (en) * | 2014-05-28 | 2015-12-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | Oriented graphene/polymer composite system, and preparation method and application thereof |
| CN105366664A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Production method for sulfur-doped graphene |
| CN105366662A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Preparing method for sulfur-doped graphene |
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| CN103694717A (en) * | 2013-12-30 | 2014-04-02 | 上海浦东路桥建设股份有限公司 | Road bitumen with high heat conduction efficiency and preparation method thereof |
| CN103819915A (en) * | 2014-02-26 | 2014-05-28 | 西安理工大学 | Graphene oxide modified asphalt and preparation method thereof |
| CN103834185A (en) * | 2014-02-26 | 2014-06-04 | 西安理工大学 | Polyurethane/nano-composite modified asphalt and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559289A (en) * | 2018-05-14 | 2018-09-21 | 重庆路维康交通科技有限公司 | A kind of nano modification emulsified asphalt and its preparation and application |
| CN108690360A (en) * | 2018-06-20 | 2018-10-23 | 广西大学 | Graphene compound rubber asphalt modifying agent and its preparation method and application |
| CN108690360B (en) * | 2018-06-20 | 2021-01-05 | 广西大学 | Graphene composite rubber asphalt modifier and preparation method and application thereof |
| CN110144128A (en) * | 2019-06-13 | 2019-08-20 | 安徽省高等级公路工程监理有限公司 | A kind of superelevation durable express highway pavement modified pitch mixing material |
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| CN106280507B (en) | 2019-04-30 |
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