CN108690360B - Graphene composite rubber asphalt modifier and preparation method and application thereof - Google Patents
Graphene composite rubber asphalt modifier and preparation method and application thereof Download PDFInfo
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- CN108690360B CN108690360B CN201810637994.6A CN201810637994A CN108690360B CN 108690360 B CN108690360 B CN 108690360B CN 201810637994 A CN201810637994 A CN 201810637994A CN 108690360 B CN108690360 B CN 108690360B
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three 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
- 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
Abstract
The invention discloses a graphene composite rubber asphalt modifier and a preparation method and application thereof, wherein the graphene composite rubber asphalt modifier comprises the following components in parts by weight: 0.00005-0.01 part of graphene powder, 3-23 parts of dispersion medium, 78-92 parts of rubber powder and 0.05-6 parts of additive; the preparation method of the graphene composite rubber asphalt modifier comprises the following steps: (1) mixing graphene powder and a dispersion medium, mechanically stirring, and further dispersing at a high speed to obtain a graphene dispersion liquid; and (2) banburying the graphene dispersion liquid, rubber powder and an additive to prepare the graphene composite rubber asphalt modifier; the graphene composite rubber asphalt modifier or the preparation method thereof is applied to the aspect of asphalt modifiers, can greatly improve the compatibility and stability of rubber powder in asphalt, can improve the bonding performance and high and low temperature stability of graphene composite rubber modified asphalt and gravel, and simultaneously reduces the temperature of a pavement and prolongs the service life of the pavement.
Description
Technical Field
The invention relates to the field of asphalt modifiers, in particular to a graphene composite rubber asphalt modifier, and a preparation method and application thereof.
Background
The asphalt pavement has the characteristics of comfortable and quiet running, convenient and fast maintenance and the like, more than 95 percent of roads in the world are paved with the asphalt pavement at present, the important material composition of the asphalt pavement is from initial residual oil, common asphalt and heavy traffic asphalt to modified asphalt with the use amount of more than 50 percent at present, along with the rapid increase of traffic load of economic high-speed development, various problems occur in the asphalt pavement constructed by the common asphalt or the heavy traffic asphalt, such as cracking, rutting and deformation caused by insufficient high-temperature performance, and various problems of pavement cracking caused by insufficient low-temperature performance cannot meet the practical use requirements. The rubber asphalt is an asphalt cementing material which is formed by processing waste tires into rubber powder particles and then fully fusing the rubber powder particles with matrix asphalt according to a certain proportion. The high-temperature stability, the anti-rutting performance and the anti-fatigue performance of the waste rubber modified asphalt mixture are equal to or slightly better than that of SBS modified asphalt, but the waste rubber modified asphalt mixture more meets the environmental protection requirement and has attracted more and more attention from various fields. However, in the practical application of rubber powder modified asphalt, some technical problems need to be solved urgently, and the problems of poor storage stability of the modified asphalt, high temperature required in the processing process, serious odor and secondary pollution of dust and the like caused by insufficient compatibility of rubber and matrix asphalt further influence the large-scale application of the rubber asphalt.
Graphene is a novel functional material, and carbon atoms in the structure of the graphene are connected through a strong sigma bond, so that the graphene sheet has excellent mechanical properties. At present, the methods for preparing two-dimensional graphene can be divided into two types: one is a top-down method, that is, the graphene is obtained by decomposing graphite or carbon nanotubes with a structure higher than that of graphene, such as a mechanical exfoliation method, an intercalation exfoliation method, a solvent liquid phase exfoliation method, a redox method, and the like; another method is a bottom-up method, in which graphene is prepared by CVD, arc discharge, solvothermal method, etc. using a carbon source (small molecules such as methane, CO, alcohol, etc.) having a lower structure than graphene. The performance of graphene in specific applications is closely related to the preparation method.
In the aspect of graphene asphalt at present, graphene oxide is mostly adopted, the graphene oxide is used as an additive, SBS is used as a modifier, and the graphene oxide is mixed with matrix asphalt and a sulfur-containing promoter to obtain graphene modified asphalt; or mixing the matrix asphalt with a modifier, and then adding the carboxyl modified graphene oxide to obtain polyethylene modified asphalt based on the carboxyl modified graphene oxide; in addition, the graphene oxide and ethanol are subjected to ultrasonic dispersion according to a certain proportion to prepare graphene oxide sol, and the graphene oxide sol is uniformly mixed and stirred with the medium-temperature coal pitch until the solvent in the pitch is completely volatilized, so that a final product is obtained. The prior art shows that: the addition of the graphene can improve the adhesion, mechanical property, high and low temperature stability, high temperature rutting resistance and the like of the asphalt.
However, since graphene oxide has hydrophilicity and poor compatibility with asphalt, although the graphene oxide is functionalized, the graphene oxide still has a two-dimensional lamellar structure, and the graphene oxide needs to be directly and fully dispersed in the asphalt, so that certain technical difficulty exists; in the prior art, the crosslinking degree of graphene and asphalt is improved by adopting nitrogen or sulfur-doped graphene, but sulfur-containing substances are not environment-friendly enough, and if harmful substances are released in construction, the health is harmed.
The process adopted in the aspect of graphene asphalt at present is roughly as follows: the method comprises the steps of functionalizing graphene, and mixing and co-melting the graphene, asphalt and a modifier, wherein the interface performance of the graphene, the asphalt and the modifier is poor and the compatibility is poor due to the co-melting mixing mode, so that the dispersion degree of the graphene in the asphalt is low and the stability cannot be guaranteed.
Therefore, the effect can be enhanced by directly dispersing the graphene in the asphalt in a co-melting mixing manner by a relatively high addition amount, and in the prior art, the addition amount of the graphene accounts for 0.1-5% of the total mass of the asphalt, and sometimes reaches more than 10%. Therefore, the cost of the graphene modified asphalt is greatly increased, and the popularization and the use are not facilitated.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a graphene composite rubber asphalt modifier, a preparation method and an application thereof, the graphene composite rubber asphalt modifier can greatly improve the compatibility and stability of rubber powder in asphalt, can improve the bonding property and high and low temperature stability of modified asphalt and gravel, and simultaneously reduces the temperature of a pavement and prolongs the service life of the pavement.
In order to achieve the purpose, the invention provides a graphene composite rubber asphalt modifier which comprises the following components in parts by weight: 0.00005-0.01 part of graphene powder, 3-23 parts of dispersion medium, 78-92 parts of rubber powder and 0.05-6 parts of additive; preferably, the graphene composite rubber asphalt modifier comprises the following components in parts by weight: 0.0001-0.005 part of graphene powder, 5-20 parts of dispersion medium, 80-90 parts of rubber powder and 0.1-5 parts of additive; further preferably, the graphene composite rubber asphalt modifier comprises the following components in parts by weight: 0.003 part of graphene powder, 13 parts of a dispersion medium, 85 parts of rubber powder and 2.5 parts of an additive.
In a preferred embodiment, the graphene powder is at least one selected from graphene nanoplatelets, reduced graphene oxide and stereo-structure graphene; preferably, the graphene powder is a three-dimensional graphene; more preferably, the specific surface area of the graphene powder is more than or equal to 300m2(ii)/g; wherein, the Graphene Nanoplatelets (Graphene Nanoplatelets) refer to ultrathin Graphene layered stacks with less than 10 carbon layers and a transverse dimension in the range of 100 nanometers to 1000 micrometers; the reduced graphene oxide is prepared by first oxidizing graphite into graphite oxide, then converting the graphite oxide into graphene oxide through stripping, and finally performing various reduction methods (obtaining graphene with excellent electrochemical and photochemical performances, wherein the three-dimensional graphene is a powder material with a honeycomb-like structure formed by two-dimensional graphene sheets, and the structure of the graphene is similar to that of the powder materialThe basic features conform to the requirements of technical standards DB 45/T1421-2016 and DB 45/T1425-2016.
In a preferred embodiment, the dispersion medium is selected from at least one of paraffin rubber oil, aromatic-based rubber oil, cycloalkyl rubber oil, and polycyclic aromatic hydrocarbon rubber oil; preferably, the dispersion medium is selected from at least one of paraffin rubber oil, aromatic rubber oil and cycloalkyl rubber oil; further preferably, the dispersion medium is a naphthenic rubber oil.
In a preferred embodiment, the powder particle size of the rubber powder is 20-200 meshes; preferably, the powder granularity of the rubber powder is 30-150 meshes; further preferably, the powder particle size of the rubber powder is 40-80 meshes.
In a preferred embodiment, the additive is selected from the group consisting of acrylonitrile-butadiene-styrene copolymer, polyethylene, ethylene bis stearamide, C9Petroleum resin, C12At least one of petroleum resin, a silane coupling agent KH-580, a silane coupling agent KH550, a silane coupling agent KH792, dodecyl trimethoxy silane, hexadecyl trimethoxy silane, a dispersant KC163, a dispersant BYK110 and a dispersant BYK 164; preferably, the additive is selected from at least one of acrylonitrile-butadiene-styrene copolymer, polyethylene and ethylene bis stearamide; further preferably, the additive is an acrylonitrile-butadiene-styrene copolymer. The additive has the functions of increasing the interface interaction of graphene and rubber powder and stably dispersing graphene.
The invention also provides a preparation method of the graphene composite rubber asphalt modifier, which comprises the following steps: (1) mixing graphene powder and a dispersion medium, mechanically stirring, and further dispersing at a high speed to obtain a graphene dispersion liquid; (2) and banburying the graphene dispersion liquid, rubber powder and an additive to prepare the graphene composite rubber asphalt modifier.
In a preferred embodiment, in the step (1), the graphene powder and the dispersion medium are mixed at a mass ratio of (0.00005-0.01): (3-23); preferably, the mass ratio of the graphene powder to the dispersion medium is (0.0001-0.005): (5-20); more preferably, the mass ratio of the graphene powder to the dispersion medium is 0.003: 13.
in a preferred embodiment, in the step (1), the high-speed dispersion is to disperse the liquid obtained by mixing the graphene powder and the dispersion medium at 60-120 ℃ for 10-60min by using a high-speed shearing machine, and obtain a graphene dispersion liquid after cooling, wherein the sheet diameter distribution of graphene in the graphene dispersion liquid is 100-2000 nm; preferably, the high-speed shearing machine is used for dispersing the liquid mixed by the graphene and the dispersion medium for 20-50min at 70 ℃; preferably, the high-speed shearing machine disperses the liquid obtained by mixing the graphene powder and the dispersion medium at 70 ℃ for 35 min; more preferably, the sheet diameter distribution of the graphene in the graphene dispersion liquid is 500-1000 nm.
In a preferred embodiment, in the step (2), the graphene dispersion liquid, the rubber powder and the additive are mixed in a ratio of (3-23): (78-92): (0.05-6) banburying and kneading for 10-60min at 200-260 ℃, and cooling to prepare the graphene composite rubber asphalt modifier; preferably, in the step (2), the graphene dispersion liquid, the rubber powder and the additive are mixed in a ratio of (5-20): (80-90): (0.1-5) banburying and kneading at 220-240 ℃ for 20-50 min; further preferably, in the step (2), the graphene dispersion liquid, the rubber powder and the additive are mixed in a ratio of 13: 85: 2.5 at 230 ℃ for 35 min.
The invention also provides an application of the graphene composite rubber asphalt modifier or the preparation method thereof in the aspect of asphalt modifiers.
Compared with the prior art, the invention has the following beneficial effects:
(1) the graphene composite rubber asphalt modifier is selected from at least one of graphene nanoplatelets, reduced graphene oxide and three-dimensional graphene, and has better dispersibility than graphene oxide;
(2) according to the preparation method of the graphene composite rubber asphalt modifier, a high-temperature banburying process is adopted, so that graphene and rubber powder are fully mixed, the modification effect of graphene is improved, and insufficient dispersion caused by direct mixing of graphene and matrix asphalt is avoided;
(3) the graphene powder adopted by the invention is combined with a high-temperature banburying process, the graphene powder with the content of less than 0.01 percent can play a good role in asphalt, the cost of graphene modified asphalt is greatly reduced, the compatibility and stability of rubber powder in asphalt can be greatly improved by the graphene composite rubber asphalt modifier, the bonding property and high and low temperature stability of modified asphalt and gravel can be improved, the temperature of a road surface is reduced, and the service life of the road surface is prolonged.
Detailed Description
The following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1 Components and preparation methods of graphene compounded rubber asphalt modifier
The components of the graphene composite rubber asphalt modifier are shown as follows (in parts by weight)
The specific surface area of the three-dimensional graphene is 500m2The powder granularity of the rubber powder is 60 meshes.
The preparation method of the graphene composite rubber asphalt modifier comprises the following steps:
(1) and (2) mixing the three-dimensional graphene and the naphthenic base rubber oil according to the mass ratio of 0.003: 13, mixing, mechanically stirring, dispersing for 35 minutes by using a high-speed shearing machine at the temperature of 90 ℃, and cooling to obtain a graphene dispersion liquid;
(2) mixing the prepared graphene dispersion liquid with rubber powder and an acrylonitrile-butadiene-styrene copolymer according to a mass ratio of 13: 85: 2.5 adding the mixture into an internal mixer, carrying out high-temperature internal mixing and kneading at 230 ℃ for 35 minutes, and cooling to prepare the graphene composite rubber asphalt modifier.
Example 2 Components and preparation methods of graphene composite rubber asphalt modifier
The components of the graphene composite rubber asphalt modifier are shown as follows (in parts by weight)
The specific surface area of the reduced graphene oxide is 400m2The powder granularity of the rubber powder is 40 meshes.
The preparation method of the graphene composite rubber asphalt modifier comprises the following steps:
(1) reducing graphene oxide and aryl rubber oil according to a mass ratio of 0.0001: 5, mixing, mechanically stirring, dispersing for 20 minutes by using a high-speed shearing machine at the temperature of 60 ℃, and cooling to obtain a graphene dispersion liquid;
(2) mixing the prepared graphene dispersion liquid with rubber powder and polyethylene according to a mass ratio of 5: 80: 0.1, adding the mixture into an internal mixer, carrying out high-temperature internal mixing and kneading at 220 ℃ for 20 minutes, and cooling to prepare the graphene composite rubber asphalt modifier.
Example 3 Components and preparation methods of graphene compounded rubber asphalt modifier
The components of the graphene composite rubber asphalt modifier are shown as follows (in parts by weight)
The specific surface area of the graphene nanoplatelets is 600m2The powder granularity of the rubber powder is 80 meshes.
The preparation method of the graphene composite rubber asphalt modifier comprises the following steps:
(1) mixing graphene micro-sheets and paraffin rubber oil according to a mass ratio of 0.005: 20, mechanically stirring, dispersing for 50 minutes by using a high-speed shearing machine at the temperature of 120 ℃, and cooling to obtain the graphene dispersion liquid.
(2) Mixing the prepared graphene dispersion liquid with rubber powder and ethylene bis stearamide according to a mass ratio of 20: 90: and 5, adding the mixture into an internal mixer, carrying out high-temperature internal mixing and kneading at 240 ℃ for 50 minutes, and cooling to prepare the graphene composite rubber asphalt modifier.
Example 4 graphene-free rubber asphalt modifier
The components of the graphene-free rubber asphalt modifier are shown as follows (in parts by weight)
12 portions of naphthenic base rubber oil
87 portions of rubber powder
1 part of acrylonitrile-butadiene-styrene copolymer
The preparation method of the graphene-free rubber asphalt modifier is the same as that of example 1 except that the graphene powder is not added.
The graphene composite rubber asphalt modifier in the examples 1-3 and the graphene-free rubber asphalt modifier in the example 4 are respectively used for modifying No. 70 matrix asphalt, wherein the weight ratio of the graphene composite rubber asphalt modifier to the matrix asphalt in the examples 1-3 is 20: 80, the weight ratio of the graphene-free rubber asphalt modifier to the matrix asphalt in example 4 is 20: and 80, testing by adopting related technical standard specifications, wherein the technical indexes of the graphene rubber asphalt modifier product are detailed in table 1, and the indexes of the graphene rubber asphalt mixture (namely the modifier is added into the asphalt) are detailed in table 2.
TABLE 1 technical indices of the products
TABLE 2 graphene rubber asphalt mixture (AC-16C) index
As can be seen from Table 1 above, the graphene composite rubber asphalt modifiers of examples 1-3 are higher than the graphene-free rubber asphalt modifier of example 4 in both the modification softening point and the ductility at 10 ℃, and after the modifiers referred to in examples 1 to 4 were added to the asphalt, as can be seen from Table 2, the dynamic stability at 60 ℃, 0.7Mpa, the marshall residual stability after water immersion, the low-temperature fracture bending tensile strength and the stiffness modulus of the graphene rubber asphalt mixture mixed with the graphene composite rubber asphalt modifier in the embodiment 1-3 are far more than the graphene rubber asphalt mixture mixed with the graphene rubber asphalt modifier without the graphene rubber asphalt modifier in the embodiment 4, therefore, the graphene composite rubber asphalt modifier provided by the invention can be used for greatly improving the compatibility and stability of rubber powder in asphalt.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (21)
1. The graphene composite rubber asphalt modifier is characterized by comprising the following components in parts by weight: 0.00005-0.01 part of graphene powder, 3-23 parts of dispersion medium, 78-92 parts of rubber powder and 0.05-6 parts of additive; the graphene powder is selected from at least one of graphene micro-sheets, reduced graphene oxide and three-dimensional graphene;
the dispersion medium is at least one selected from paraffin rubber oil, aromatic base rubber oil, naphthenic base rubber oil and polycyclic aromatic hydrocarbon rubber oil;
the additive is selected from acrylonitrile-butadiene-styrene copolymer, polyethylene, ethylene bisstearamide, C9Petroleum resin, C12At least one of petroleum resin, a silane coupling agent KH-580, a silane coupling agent KH550, a silane coupling agent KH792, dodecyl trimethoxy silane, hexadecyl trimethoxy silane, a dispersant KC163, a dispersant BYK110 and a dispersant BYK 164;
the graphene composite rubber asphalt modifier is prepared by the following method:
(1) mixing graphene powder and a dispersion medium, mechanically stirring, and further dispersing at a high speed to obtain a graphene dispersion liquid;
the high-speed dispersion is to disperse the liquid obtained by mixing the graphene powder and the dispersion medium for 10-60min at the temperature of 60-120 ℃ through a high-speed shearing machine, and then to obtain graphene dispersion liquid after cooling, wherein the sheet diameter distribution of graphene in the graphene dispersion liquid is 100-2000 nm;
(2) and banburying and kneading the graphene dispersion liquid, the rubber powder and the additive at 200-260 ℃ for 10-60min, and cooling to prepare the graphene composite rubber asphalt modifier.
2. The graphene composite rubber asphalt modifier according to claim 1, which comprises the following components in parts by weight: 0.0001-0.005 part of graphene powder, 5-20 parts of dispersion medium, 80-90 parts of rubber powder and 0.1-5 parts of additive.
3. The graphene composite rubber asphalt modifier according to claim 1, which comprises the following components in parts by weight: 0.003 part of graphene powder, 13 parts of a dispersion medium, 85 parts of rubber powder and 2.5 parts of an additive.
4. The graphene composite rubber asphalt modifier according to claim 1, wherein the graphene powder is a three-dimensional graphene.
5. The graphene composite rubber asphalt modifier according to claim 1, wherein the specific surface area of the graphene powder is not less than 300m2/g。
6. The graphene composite rubber asphalt modifier according to claim 1, wherein the dispersion medium is at least one selected from the group consisting of paraffin rubber oil, aromatic rubber oil, and cycloalkyl rubber oil.
7. The graphene composite rubber asphalt modifier according to claim 6, wherein the dispersion medium is a cycloalkyl rubber oil.
8. The graphene composite rubber asphalt modifier according to claim 1, wherein the powder particle size of the rubber powder is 20-200 mesh.
9. The graphene composite rubber asphalt modifier according to claim 8, wherein the powder particle size of the rubber powder is 30-150 mesh.
10. The graphene composite rubber asphalt modifier according to claim 9, wherein the powder particle size of the rubber powder is 40-80 mesh.
11. The graphene composite rubber asphalt modifier according to claim 1, wherein the additive is at least one selected from the group consisting of acrylonitrile-butadiene-styrene copolymer, polyethylene, and ethylene bis stearamide.
12. The graphene composite rubber asphalt modifier of claim 11, wherein the additive is an acrylonitrile-butadiene-styrene copolymer.
13. The method for preparing the graphene composite rubber asphalt modifier according to claim 1, which is characterized by comprising the following steps:
(1) mixing graphene powder and a dispersion medium, mechanically stirring, and further dispersing at a high speed to obtain a graphene dispersion liquid;
the high-speed dispersion is to disperse the liquid obtained by mixing the graphene powder and the dispersion medium for 10-60min at the temperature of 60-120 ℃ through a high-speed shearing machine, and then to obtain graphene dispersion liquid after cooling, wherein the sheet diameter distribution of graphene in the graphene dispersion liquid is 100-2000 nm;
(2) and banburying and kneading the graphene dispersion liquid, the rubber powder and the additive at 200-260 ℃ for 10-60min, and cooling to prepare the graphene composite rubber asphalt modifier.
14. The preparation method according to claim 13, wherein the graphene powder and the dispersion medium are mixed at a mass ratio of (0.0001 to 0.005): (5-20).
15. The preparation method according to claim 14, wherein the graphene powder and the dispersion medium are mixed in a mass ratio of 0.003: 13.
16. the preparation method of claim 13, wherein the high-speed shearing machine is used for dispersing the liquid obtained by mixing the graphene and the dispersion medium at 70 ℃ for 20-50 min.
17. The preparation method of claim 16, wherein the high-speed shearing machine is used for dispersing the liquid obtained by mixing the graphene powder and the dispersion medium at 70 ℃ for 35 min.
18. The method according to claim 13, wherein the graphene in the graphene dispersion has a distribution of platelet sizes of 500 to 1000 nm.
19. The preparation method of claim 13, wherein in the step (2), the graphene dispersion liquid, the rubber powder and the additive are banbury kneaded at 220 to 240 ℃ for 20 to 50 min.
20. The preparation method of claim 19, wherein in the step (2), the graphene dispersion liquid, the rubber powder and the additive are banbury kneaded at 230 ℃ for 35 min.
21. The graphene composite rubber asphalt modifier of claim 1, applied to asphalt modifiers.
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| PCT/CN2019/091060 WO2019242556A1 (en) | 2018-06-20 | 2019-06-13 | Graphene composite rubber asphalt modifier and preparation method therefor and use thereof |
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| CN108690360B (en) * | 2018-06-20 | 2021-01-05 | 广西大学 | Graphene composite rubber asphalt modifier and preparation method and application thereof |
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| CN110358314A (en) * | 2019-07-05 | 2019-10-22 | 广西清鹿新材料科技有限责任公司 | A kind of preparation method of graphene composite asphalt |
| CN111748210A (en) * | 2020-07-23 | 2020-10-09 | 赵俊 | Asphalt mixture with conductive function and preparation method thereof |
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| CN113800820A (en) * | 2021-09-22 | 2021-12-17 | 南京宁通智能交通技术研究院有限公司 | Graphene composite material rubber asphalt mixture and preparation method thereof |
| CN114213853A (en) * | 2021-12-14 | 2022-03-22 | 甘肃路桥建设集团养护科技有限责任公司 | Graphene oxide rubber composite modified asphalt used under large temperature difference climate condition 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 |
| CN114752350A (en) * | 2022-05-20 | 2022-07-15 | 广西北投交通养护科技集团有限公司 | Road maintenance joint filling adhesive and preparation method thereof |
| CN115093713B (en) * | 2022-07-18 | 2023-02-21 | 华运通达(浙江)交通科技有限公司 | Graphene modified asphalt and preparation method thereof |
| 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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2018
- 2018-06-20 CN CN201810637994.6A patent/CN108690360B/en active Active
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2019
- 2019-06-13 WO PCT/CN2019/091060 patent/WO2019242556A1/en active Application Filing
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|---|---|---|---|---|
| WO2015084945A1 (en) * | 2013-12-04 | 2015-06-11 | Cornell University | Electrospun composite nanofiber comprising graphene nanoribbon or graphene oxide nanoribbon, methods for producing same, and applications of same |
| 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 |
| CN106147108A (en) * | 2015-04-16 | 2016-11-23 | 张家港志宇道路材料有限公司 | One directly mixes formula SBS modifier and preparation method thereof |
| CN106280507A (en) * | 2016-08-17 | 2017-01-04 | 河南师范大学 | A kind of NEW TYPE OF COMPOSITE modified pitch and preparation method thereof |
| CN106832977A (en) * | 2017-03-03 | 2017-06-13 | 广西大学 | A kind of composite asphalt modifier containing modified graphene microplate and its preparation method and application |
Non-Patent Citations (1)
| Title |
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| 石墨烯-SBS改性沥青的性能;杜建政;《交通世界 建养机械》;20150430(第10期);第144-145页 * |
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| Publication number | Publication date |
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| WO2019242556A1 (en) | 2019-12-26 |
| CN108690360A (en) | 2018-10-23 |
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