CN109575618A - A kind of compound rock asphalt tracking-resisting modifier of graphene and preparation method thereof - Google Patents
A kind of compound rock asphalt tracking-resisting modifier of graphene and preparation method thereof Download PDFInfo
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- CN109575618A CN109575618A CN201811503815.6A CN201811503815A CN109575618A CN 109575618 A CN109575618 A CN 109575618A CN 201811503815 A CN201811503815 A CN 201811503815A CN 109575618 A CN109575618 A CN 109575618A
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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
- 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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Abstract
The present invention relates to a kind of road asphalt modifying agent, and in particular to a kind of compound rock asphalt tracking-resisting modifier of graphene and preparation method thereof.Each component including following parts by weight: 1-5 parts of graphene, 5-10 parts of bitumen, 30-50 parts of pitch, 5-10 parts of SBS, 2-4 parts of coupling agent, 1-2 parts of dispersing agent.Graphene composite rock asphalt modifier mixture prepared by the present invention, possess excellent fatigue resistance and Rut resistance, it is with good stability at high temperature, improve the high-temperature behavior of asphalt, improve rutting resistance, it can also play the role of improving the adhesive capacity of pitch and building stones simultaneously, preparation method is simple, technique mitigates, is at low cost.
Description
Technical field
The present invention relates to a kind of road asphalt modifying agent, and in particular to a kind of compound rock asphalt Rut resistance of graphene is modified
Agent and preparation method thereof.
Background technique
Bituminous pavement is because its unique performance is widely used in the construction of highway, with the rapid hair of national highway
Exhibition, also increases the dosage of pitch increasingly.Certainly, with the requirement of highway construction quality, to bituminous pavement property require also by
It is gradually harsh.SBS modified pitch is most common modified pitch, is modified substrate pitch for raw material, addition is a certain proportion of
SBS modifier is homogeneously dispersed in SBS in pitch by the methods of shearing, stirring, does modification to pitch.Modified drip
Blueness is the ideal material on making advanced road road surface, it has also become the common recognition of highway circle.
The flow deformation of bituminous pavement is the most common damage of bituminous pavement phenomenon in the world, according to statistics, the dimension on road surface
It repairs in statistics, is because of deformation failure caused by track there are about 80%.Existing modified pitch, which is not directed to preferably, prevents vehicle
Modified pitch of the rut to damage of bituminous pavement.In order to solve the damage of track road pavement, it is badly in need of researching and developing now a kind of with preferable
Rut resistance asphalt modifier.
Summary of the invention
In order to solve the shortcomings of the prior art point, it is modified that the present invention provides a kind of compound rock asphalt Rut resistance of graphene
Agent and preparation method thereof.
A kind of compound rock asphalt tracking-resisting modifier of graphene, each component including following parts by weight: 1-5 parts of graphene,
5-10 parts of bitumen, 30-50 parts of pitch, 5-10 parts of SBS, 2-4 parts of coupling agent, 1-2 parts of dispersing agent.
Preferably, each component including following parts by weight: 5 parts of graphene, 10 parts of bitumen, 30 parts of pitch, SBS 10
Part, 3 parts of coupling agent, 2 parts of dispersing agent.
Preferably, the graphene is the 5-10 layer graphene oxide aqueous slurry of 5% concentration.
Preferably, the bitumen is rock asphalt, and the rock asphalt granularity is 15~20 microns.
Preferably, the pitch is No. 70 or No. 90 pitches.
Preferably, the SBS is thermoplastic styrene butadiene rubber particle.
Preferably, the coupling agent is organic chromium complex, silanes, any one or a few the group in titanate ester
It closes.
Preferably, the dispersing agent is by KN4010 type ring alkane oil fluent material.
A kind of preparation method of the compound rock asphalt tracking-resisting modifier of graphene, comprising the following steps:
1) bitumen powder and graphene are poured into and carries out heating mixing in heating stirring machine；
2) step 1) mixture is put into reaction kettle, adds pitch and carries out heating shear agitation；
3) bulky grain SBS thermoplastic styrene butadiene rubber particle is crushed with mechanical crusher, is put into later anti-in step 2)
Kettle is answered to continue to heat shear agitation；
4) it is put into coupling agent, after dispersing agent continues heating shear agitation 2 hours, it is cooling to obtain a kind of graphene composite rock drip
Green tracking-resisting modifier.
Preferably, the graphene is the 5-10 layer graphene oxide aqueous slurry of 5% concentration；The bitumen is rock
Pitch, the rock asphalt granularity are 15~20 microns；The pitch is No. 70 or No. 90 pitches；The SBS is thermoplasticity fourth
Benzene rubber grain；The coupling agent is organic chromium complex, silanes, any one or the combination of several of them in titanate ester；Institute
Stating dispersing agent is by KN4010 type ring alkane oil fluent material.
The beneficial effects of the present invention are:
Graphene composite rock asphalt modifier prepared by the present invention possesses excellent fatigue resistance and Rut resistance, in height
It is with good stability under temperature, while can also play the role of improving the adhesive capacity of pitch and building stones.It is multiple to add graphene
The performance for closing rock asphalt tracking-resisting modifier is more advantageous to the change of engineering use direction, does not add the modifying agent of graphene, respectively
A 107 needle penetrations of performance/0.1mm25 DEG C, 25 ductilities/cm25 DEG C, 41 DEG C of softness numberes.And the rock asphalt for adding 5 parts of graphene is anti-
Track modifying agent is obviously improved various aspects performance, 72 needle penetrations/0.1mm25 DEG C, 11 ductilities/cm5 DEG C, 51 DEG C of softness numberes.?
In the case where ductility variation less, the needle penetration of the compound rock asphalt tracking-resisting modifier of graphene improves 35 needle penetrations/0.1mm25
DEG C, softness number improves 10 DEG C of softness numberes, hence it is evident that improves the engineering service performance of asphalt modifier.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment to this
Invention is further elaborated.
Comparative example
A kind of asphalt modifier is grouped as by each group of following parts by weight: 5 parts of bitumen, 30 parts of pitch, 7 parts of SBS,
2 parts of coupling agent, 1 part of dispersing agent.
The bitumen is rock asphalt, and the rock asphalt granularity is 15 microns；The pitch is No. 70 pitches；It is described
SBS is thermoplastic styrene butadiene rubber particle；Coupling agent is silane coupling agent；The dispersing agent is by KN4010 type ring alkane oil liquid body material
Material.
Above-mentioned asphalt modifier the preparation method comprises the following steps:
1) rock asphalt and pitch are put into reaction kettle and carry out heating shear agitation.
2) bulky grain SBS thermoplastic styrene butadiene rubber particle is crushed with mechanical crusher, is put into reaction kettle later and continues to add
Hot shearing stirring.
3) it is put into coupling agent, dispersing agent continues cooling after heating shear agitation 2 hours and obtains modifying agent.
Embodiment 1
A kind of graphene composite rock asphalt modifier, is grouped as by each group of following parts by weight: 1 part of graphene, natural drip
Green 5 parts, 30 parts of pitch, 7 parts of SBS, 2 parts of coupling agent, 1 part of dispersing agent.
The graphene is 5 layers of graphene oxide aqueous slurry of 5% concentration；The bitumen is rock asphalt, described
Rock asphalt granularity is 15 microns；The pitch is No. 70 pitches；The SBS is thermoplastic styrene butadiene rubber particle；Coupling agent is
Silane coupling agent；The dispersing agent is by KN4010 type ring alkane oil fluent material.
Above-mentioned graphene composite rock asphalt modifier the preparation method comprises the following steps:
1) rock asphalt powder and graphene oxide slurry are put into heating stirring machine and carry out heating mixing.
2) step 1) mixture is put into reaction kettle, places into pitch and carries out heating shear agitation.
3) bulky grain SBS thermoplastic styrene butadiene rubber particle is crushed with mechanical crusher, is put into reaction kettle later and continues to add
Hot shearing stirring.
4) it is put into coupling agent, dispersing agent continues cooling after heating shear agitation 2 hours and obtains a kind of graphene composite rock drip
Green tracking-resisting modifier.
Embodiment 2
A kind of graphene composite rock asphalt modifier, is grouped as by each group of following parts by weight: 3 parts of graphene, natural drip
Green 7 parts, 30 parts of pitch, 7 parts of SBS, 2 parts of coupling agent, 1 part of dispersing agent.
The graphene is 5 layers of graphene oxide aqueous slurry of 5% concentration；The bitumen is rock asphalt, described
Rock asphalt granularity is 15 microns；The pitch is No. 70 pitches；The SBS is thermoplastic styrene butadiene rubber particle；Coupling agent is
Silane coupling agent；The dispersing agent is by KN4010 type ring alkane oil fluent material.
The preparation method is the same as that of Example 1.
Embodiment 3
A kind of graphene composite rock asphalt modifier, is grouped as by each group of following parts by weight: 5 parts of graphene, natural drip
Green 10 parts, 30 parts of pitch, 10 parts of SBS, 3 parts of coupling agent, 2 parts of dispersing agent.
The graphene is 5 layers of graphene oxide aqueous slurry of 5% concentration；The bitumen is rock asphalt, described
Rock asphalt granularity is 15 microns；The pitch is No. 70 pitches；The SBS is thermoplastic styrene butadiene rubber particle；Coupling agent is
Silane coupling agent；The dispersing agent is by KN4010 type ring alkane oil fluent material.
The preparation method is the same as that of Example 1.
Using the technical indicator of the asphalt of the present embodiment modifying agent, following (modifying agent is in asphalt
8%) mass percent is:
(1) Marshall stability index: Marshall stability 11.2kN, flow valuve 3.2mm；
(2) soak Marshall residual stability: 95%；
(3) indirect tensile test on frozen-thaw intensity ratio: 90%；
(4) high temperature stability performance (60 DEG C of wheel tracking tests): dynamic stability=4500 time/mm；
(5) cryogenic property (- 10 DEG C of low temperature bend tests): bending failure strains=2120 μ ε.
Experimental test example
The performance indicator of the asphalt modifier in comparative example and embodiment 1-3 at 25 DEG C is tested, as shown in table 1:
The data measured at 25 DEG C of temperature indoors of table 1
| Index | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Graphene additive amount | 0 | 1 part | 3 parts | 5 parts |
| Needle penetration/0.1mm25 DEG C | 107 | 87 | 78 | 72 |
| Ductility/cm25 DEG C | 25 | 22 | 19 | 17 |
| Softness number DEG C | 41 | 45 | 49 | 51 |
It can be seen from Table 1 that the performance of the addition compound rock asphalt tracking-resisting modifier of graphene is more advantageous to engineering and makes
Changed with direction, does not add the modifying agent of graphene, each 107 needle penetrations of performance/0.1mm25 DEG C, 25 ductilities/cm25 DEG C,
41 DEG C of softness numberes.And the rock asphalt tracking-resisting modifier for adding 5 parts of graphene is obviously improved various aspects performance, 72 needle penetrations/
0.1mm25 DEG C, 11 ductilities/cm5 DEG C, 51 DEG C of softness numberes.
It is obtained from analysis of experimental data, in the case where ductility variation is little, the compound rock asphalt Rut resistance of graphene is modified
35 needle penetrations of needle penetration raising of agent/0.1mm25 DEG C, softness number improves 10 DEG C of softness numberes, hence it is evident that improves asphalt modifier
Engineering service performance.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in claim protection model of the invention
Within enclosing.
Claims (10)
1. a kind of compound rock asphalt tracking-resisting modifier of graphene, which is characterized in that each component including following parts by weight: graphite
1-5 parts of alkene, 5-10 parts of bitumen, 30-50 parts of pitch, 5-10 parts of SBS, 2-4 parts of coupling agent, 1-2 parts of dispersing agent.
2. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1, which is characterized in that including following
The each component of parts by weight: 5 parts of graphene, 10 parts of bitumen, 30 parts of pitch, SBS10 parts, 3 parts of coupling agent, 2 parts of dispersing agent.
3. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, it is characterised in that: described
Graphene is the 5-10 layer graphene oxide aqueous slurry of 5% concentration.
4. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, it is characterised in that: described
Bitumen is rock asphalt, and the rock asphalt granularity is 15~20 microns.
5. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, it is characterised in that: described
Pitch is No. 70 or No. 90 pitches.
6. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, it is characterised in that: described
SBS is thermoplastic styrene butadiene rubber particle.
7. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, it is characterised in that: described
Coupling agent is organic chromium complex, silanes, any one or the combination of several of them in titanate ester.
8. the compound rock asphalt tracking-resisting modifier of a kind of graphene according to claim 1 or 2, which is characterized in that described
Dispersing agent is by KN4010 type ring alkane oil fluent material.
9. a kind of preparation method of the compound rock asphalt tracking-resisting modifier of graphene according to claim 1 or 2, feature
It is, comprising the following steps:
1) bitumen powder and graphene are poured into and carries out heating mixing in heating stirring machine；
2) step 1) mixture is put into reaction kettle, adds pitch and carries out heating shear agitation；
3) bulky grain SBS thermoplastic styrene butadiene rubber particle is crushed with mechanical crusher, the reaction kettle being put into step 2) later
Continue to heat shear agitation；
4) it is put into coupling agent, after dispersing agent continues heating shear agitation 2 hours, cooling to obtain a kind of compound rock asphalt of graphene anti-
Track modifying agent.
10. a kind of preparation method of the compound rock asphalt tracking-resisting modifier of graphene according to claim 9, feature exist
In: the graphene is the 5-10 layer graphene oxide aqueous slurry of 5% concentration；The bitumen is rock asphalt, the rock
Pitch particle degree is 15~20 microns；The pitch is No. 70 or No. 90 pitches；The SBS is thermoplastic styrene butadiene rubber particle；
The coupling agent is organic chromium complex, silanes, any one or the combination of several of them in titanate ester；The dispersing agent be by
KN4010 type ring alkane oil liquid body material.
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Cited By (7)
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|---|---|---|---|---|
| CN110105778A (en) * | 2019-04-12 | 2019-08-09 | 重庆市市政设计研究院 | Nanocomposite modified pitch, preparation method and bituminous concrete |
| CN110256681A (en) * | 2019-05-07 | 2019-09-20 | 武汉畅易达道路材料科技有限公司 | A kind of organosilicon asphalt modifier and preparation method thereof |
| CN113429801A (en) * | 2021-07-12 | 2021-09-24 | 甘肃路桥建设集团养护科技有限责任公司 | Anti-rutting anti-fatigue high-modulus composite modified asphalt and preparation method thereof |
| CN113720703A (en) * | 2021-09-15 | 2021-11-30 | 南京林业大学 | Method for researching mechanism of graphene for enhancing mechanical properties of asphalt |
| CN115093713A (en) * | 2022-07-18 | 2022-09-23 | 华运通达(浙江)交通科技有限公司 | Graphene modified asphalt and preparation method thereof |
| CN115304925A (en) * | 2022-01-27 | 2022-11-08 | 山东建筑大学 | Low-melting-point instant high-viscosity asphalt modifier and preparation method thereof |
| CN117466563A (en) * | 2023-12-28 | 2024-01-30 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110256681A (en) * | 2019-05-07 | 2019-09-20 | 武汉畅易达道路材料科技有限公司 | A kind of organosilicon asphalt modifier and preparation method thereof |
| CN113429801A (en) * | 2021-07-12 | 2021-09-24 | 甘肃路桥建设集团养护科技有限责任公司 | Anti-rutting anti-fatigue high-modulus composite modified asphalt and preparation method thereof |
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| CN115304925A (en) * | 2022-01-27 | 2022-11-08 | 山东建筑大学 | Low-melting-point instant high-viscosity asphalt modifier and preparation method thereof |
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| CN117466563A (en) * | 2023-12-28 | 2024-01-30 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
| CN117466563B (en) * | 2023-12-28 | 2024-03-19 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
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