CN114426776B - Matrix asphalt additive and preparation method and application thereof - Google Patents
Matrix asphalt additive and preparation method and application thereof Download PDFInfo
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- CN114426776B CN114426776B CN202011076404.0A CN202011076404A CN114426776B CN 114426776 B CN114426776 B CN 114426776B CN 202011076404 A CN202011076404 A CN 202011076404A CN 114426776 B CN114426776 B CN 114426776B
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention belongs to the technical field of petroleum asphalt materials, and particularly relates to a matrix asphalt additive for short-term aging recovery of asphalt, and a preparation method and application thereof. The matrix asphalt additive of the invention takes catalytic cracking slurry oil, oligomer, tackifier, free radical reactant and anti-stripping agent as effective components. Experiments prove that the matrix asphalt additive can enable matrix asphalt subjected to short-term aging to quickly recover to initial performance, and the recovered aged asphalt has better high-temperature and low-temperature performance than original asphalt, can effectively solve the problem of performance degradation caused by short-term aging of matrix asphalt in the mixing and paving processes of asphalt mixture, and has simple preparation process and strong operability, thus being suitable for industrial popularization.
Description
Technical Field
The invention belongs to the technical field of petroleum asphalt materials, and particularly relates to a matrix asphalt additive for short-term aging recovery of asphalt, and a preparation method and application thereof.
Background
In the construction of road traffic in China, asphalt pavement using petroleum asphalt as a binder is widely applied to the road with excellent road performance. However, one technical obstacle that the existing road construction field has to face is that, during the mixing and paving process of asphalt and mixture, asphalt not only contacts with high-temperature stone, but also the matrix asphalt coated on the stone surface contacts with air directly in a large area, thereby causing volatilization of a large amount of light components and oxidative condensation of heavy components in the matrix asphalt, so that the matrix asphalt can be aged rapidly in a short period of time, and the practical use performance of the matrix asphalt is seriously reduced.
At present, although asphalt additive products with different effects are developed in the prior art and are used for recovering the performance of matrix asphalt in asphalt mixtures, the asphalt additive products are mainly aimed at performance degradation caused by long-term use of asphalt, so that the regeneration and the utilization of asphalt mixtures are realized. The recycled asphalt disclosed in Chinese patent CN106147253A is prepared by forming asphalt recycling agent by using additives such as oil extract, catalytic cracking slurry oil, thermoplastic rubber and the like, and recycling the recycled road asphalt, so that the recycled road asphalt has good recycling performance. For another example, chinese patent CN103773011a discloses an asphalt recycling agent, which comprises heavy oil, catalytic cracking slurry oil, and polymer-based modifier, and the recycling agent may be heated with recycled road asphalt to form recycled asphalt, or may be mixed with other road asphalt to form modified asphalt. The asphalt regenerant can realize recycling of aged asphalt to a certain extent, but belongs to an additive for regenerating and recovering short-term aging of matrix asphalt in the process of mixing and paving asphalt mixtures, which is a functional modification of aged asphalt after long-term use.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a matrix asphalt additive to solve the problem of performance degradation caused by short-term aging of matrix asphalt in the mixing and paving process of asphalt mixture in the prior art;
the second technical problem to be solved by the invention is to provide a preparation method and application of the matrix asphalt additive.
In order to solve the technical problems, the matrix asphalt additive disclosed by the invention comprises the following components in parts by mass according to the total amount of preparation raw materials:
89-96wt% of catalytic cracking slurry oil;
1-4wt% of oligomer;
0-5wt% of tackifier;
1.5 to 3.5 weight percent of free radical reactant;
0.3-0.5wt% of anti-stripping agent.
Specifically, the catalytic cracking slurry oil is produced by a heavy oil catalytic cracking device, and the flash point of the catalytic cracking slurry oil is preferably controlled to be more than 180 ℃.
In particular, the oligomers are C9 solid resins, preferably having a relative molecular weight of 2000 to 3000.
Specifically, the tackifier comprises at least one of coumarone resin and terpene resin.
Specifically, the free radical reactant comprises at least one of dicumyl peroxide, benzoyl peroxide or di-tert-butyl peroxide.
Specifically, the anti-spalling agent comprises slaked lime.
The invention also discloses a method for preparing the matrix asphalt additive, which comprises the following steps:
(1) Heating a selected amount of the catalytic cracking slurry oil to a molten state, adding a selected amount of the free radical reactant, filling nitrogen at 160-180 ℃ for sealing, and carrying out crosslinking reaction;
(2) And cooling the obtained crosslinking reactant, adding selected amounts of the oligomer, the tackifier and the anti-stripping agent, and fully and uniformly mixing to obtain the crosslinking agent.
Specifically, in the step (2), the cooling step is controlled to be cooled to 110-130 ℃.
Specifically, in the step (2), the tackifier and the anti-stripping agent are added after the oligomer is controlled to be added for 10-30 min.
The invention also discloses a using method of the matrix asphalt additive, namely a step of mixing and heating the matrix asphalt additive with matrix asphalt and/or aged asphalt in the asphalt mixing process of pavement paving.
Specifically, the mass ratio of the matrix asphalt additive to the matrix asphalt and/or aged asphalt is 10-15:85-90.
The matrix asphalt additive of the invention takes catalytic cracking slurry oil, oligomer, tackifier, free radical reactant and anti-stripping agent as effective components; the volatile aromatic components in the catalytic cracking slurry oil can be condensed by adopting a free radical reactant, so that the content of the volatile aromatic components in the catalytic cracking slurry oil is reduced, and meanwhile, the addition of the catalytic cracking slurry oil can supplement the volatilization of oil caused by the high Wen Banhe and paving process of the matrix asphalt; in view of the synergistic effect between the oligomer and the tackifier, the high-temperature performance of the matrix asphalt is improved together; the addition of the anti-stripping agent can improve the adhesion performance between the restorative and the aggregate, so that the restorative can be quickly adsorbed on the surface of the aggregate. Experiments prove that the matrix asphalt additive can enable matrix asphalt subjected to short-term aging to quickly recover to initial performance, and the recovered aged asphalt has better high-temperature and low-temperature performance than original asphalt, can effectively solve the problem of performance degradation caused by short-term aging of matrix asphalt in the mixing and paving processes of asphalt mixture, and has simple preparation process and strong operability, thus being suitable for industrial popularization.
Detailed Description
The following examples of the invention are provided:
the catalytic cracking slurry oil is produced by a Qilu petrochemical refinery;
the oligomer is C9 solid resin which is a conventional commercial product, and the product with the softening point in the range of 110-130 ℃ is selected.
Example 1
The matrix asphalt additive in this example comprises the following components in mass content based on the total amount of the preparation raw materials:
96wt% of catalytic cracking slurry oil;
2wt% of oligomer (C9 solid resin);
1.7wt% of a radical reactant (dicumyl peroxide);
0.3wt% of anti-spalling agent (slaked lime).
Heating a selected amount of catalytic cracking slurry oil to 110 ℃, pouring the catalytic cracking slurry oil into a reaction kettle to reach a molten state, then adding a selected amount of free radical reactant after the temperature of the reaction kettle is raised to 160 ℃, and replacing air in the reaction kettle with nitrogen for 1-2min to carry out crosslinking reaction for 2h; and cooling the obtained crosslinked product to 110 ℃, adding a selected amount of the oligomer, stirring for 20min, then adding a selected amount of the anti-stripping agent, and continuing stirring for 20min to obtain the required additive.
10 parts of the additive and 90 parts of aged asphalt are fully stirred for 20min at 110-130 ℃ and are subjected to sample pouring analysis.
Example 2
The matrix asphalt additive in this example comprises the following components in mass content based on the total amount of the preparation raw materials:
94wt% of catalytic cracking slurry oil;
3wt% of oligomer (C9 solid resin);
2.5% by weight of a free-radical reactant (benzoyl peroxide);
0.5wt% of anti-spalling agent (slaked lime).
Heating a selected amount of catalytic cracking slurry oil to 130 ℃, pouring the catalytic cracking slurry oil into a reaction kettle to reach a molten state, then adding a selected amount of free radical reactant after the temperature of the reaction kettle is increased to 180 ℃, and replacing air in the reaction kettle with nitrogen for 1-2min to carry out crosslinking reaction for 1h; and cooling the obtained crosslinked product to 130 ℃, adding a selected amount of the oligomer, stirring for 20min, then adding a selected amount of the anti-stripping agent, and continuing stirring for 20min to obtain the required additive.
And (3) fully stirring 12 parts of the additive and 88 parts of aged asphalt at 110-140 ℃ for 20min, and performing sample pouring analysis.
Example 3
The matrix asphalt additive in this example comprises the following components in mass content based on the total amount of the preparation raw materials:
94wt% of catalytic cracking slurry oil;
4wt% of oligomer (C9 solid resin);
1.5% by weight of a free radical reactant (dicumyl peroxide);
0.5wt% of anti-spalling agent (slaked lime).
Heating a selected amount of catalytic cracking slurry oil to 120 ℃ to reach a molten state, pouring the catalytic cracking slurry oil into a reaction kettle, then adding a selected amount of free radical reactant after the temperature of the reaction kettle is increased to 170 ℃, and replacing air in the reaction kettle with nitrogen for 1-2min to carry out crosslinking reaction for 2h; and cooling the obtained crosslinked product to 120 ℃, adding a selected amount of the oligomer, stirring for 20min, then adding a selected amount of the anti-stripping agent, and continuing stirring for 20min to obtain the required additive.
15 parts of the additive and 85 parts of aged asphalt are fully stirred for 20min at 110-140 ℃ and are subjected to sample pouring analysis.
Example 4
The matrix asphalt additive in this example comprises the following components in mass content based on the total amount of the preparation raw materials:
90wt% of catalytic cracking slurry oil;
3wt% of oligomer (C9 solid resin);
3.5% by weight of a free-radical reactant (benzoyl peroxide);
3wt% of tackifier (coumarone resin);
0.5wt% of anti-spalling agent (slaked lime).
Heating a selected amount of catalytic cracking slurry oil to 120 ℃ to reach a molten state, pouring the catalytic cracking slurry oil into a reaction kettle, then adding a selected amount of free radical reactant after the temperature of the reaction kettle is increased to 170 ℃, and replacing air in the reaction kettle with nitrogen for 1-2min to carry out crosslinking reaction for 2h; cooling the obtained cross-linked product to 120 ℃, adding a selected amount of the oligomer, stirring for 20min, then adding a selected amount of the tackifier and the anti-stripping agent, and continuing stirring for 20min to obtain the required additive.
10 parts of the additive and 90 parts of aged asphalt are fully stirred for 20min at 110-140 ℃ and are subjected to sample pouring analysis.
Example 5
The matrix asphalt additive in this example comprises the following components in mass content based on the total amount of the preparation raw materials:
89wt% of catalytic cracking slurry oil;
3wt% of oligomer (C9 solid resin);
2.5% by weight of a free-radical reactant (benzoyl peroxide);
5% by weight of a tackifier (terpene resin);
0.5wt% of anti-spalling agent (slaked lime).
Heating a selected amount of catalytic cracking slurry oil to 120 ℃ to reach a molten state, pouring the catalytic cracking slurry oil into a reaction kettle, then adding a selected amount of free radical reactant after the temperature of the reaction kettle is increased to 170 ℃, and replacing air in the reaction kettle with nitrogen for 1-2min to carry out crosslinking reaction for 1-2h; cooling the obtained cross-linked product to 120 ℃, adding a selected amount of the oligomer, stirring for 20min, then adding a selected amount of the tackifier and the anti-stripping agent, and continuing stirring for 20min to obtain the required additive.
11 parts of the additive and 89 parts of aged asphalt are fully stirred for 20min at 110-140 ℃ and are subjected to sample pouring analysis.
Experimental example
The asphalt samples of examples 1 to 5, which were heated by thoroughly mixing the additive and the aged asphalt in the selected ratio, were subjected to the relevant performance test, and the short-term aging performance recovery was tested, and the test results were shown in Table 1 below, using the aged asphalt (prepared according to the asphalt film heating test in Highway engineering asphalt and asphalt mixture test procedure) and conventional No. 70 matrix asphalt (heated to 110 to 130 ℃ C., inverted analysis) as blank controls.
TABLE 1 short term aging recovery of asphalt
| Experimental items | Softening point/. Degree.C | Penetration (25 ℃ C.)/0.1 mm | Ductility (10 ℃ C.)/cm |
| Blank examples | 47.2 | 69.4 | 102 |
| Aged asphalt | 54.2 | 44.8 | 9.2 |
| Example 1 | 49.5 | 66.0 | 113.0 |
| Example 2 | 48.6 | 66.4 | 104.4 |
| Example 3 | 49.5 | 62.0 | 104.3 |
| Example 4 | 49.9 | 64.5 | 130.0 |
| Example 5 | 48.5 | 67.2 | 124.5 |
As can be seen from the data in the table 1, the matrix asphalt additive provided by the invention can quickly restore the matrix asphalt subjected to short-term aging to the original performance, and the restored aged asphalt has better high-temperature and low-temperature performances than the original asphalt, so that the problem of performance degradation caused by short-term aging of the matrix asphalt in the mixing and paving processes of asphalt mixture can be effectively solved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (2)
1. A method for preparing a matrix asphalt additive, which is characterized by comprising the following components in percentage by mass based on the total amount of preparation raw materials:
89-96wt% of catalytic cracking slurry oil;
1-4wt% of oligomer;
0-5wt% of tackifier;
1.5 to 3.5 weight percent of free radical reactant;
0.3-0.5wt% of anti-stripping agent;
the method comprises the following steps:
(1) Heating a selected amount of the catalytic cracking slurry oil to a molten state, adding a selected amount of the free radical reactant, filling nitrogen at 160-180 ℃ for sealing, and carrying out crosslinking reaction;
(2) Cooling the obtained crosslinking reactant, adding selected amounts of the oligomer, the tackifier and the anti-stripping agent, and fully and uniformly mixing to obtain the crosslinking agent;
wherein in the step (2), the cooling step is controlled to be cooled to 110-130 ℃, and the tackifier and the anti-stripping agent are added after the oligomer is added for 10-30 min; wherein, the catalytic cracking slurry oil is produced by a heavy oil catalytic cracking device; the oligomer is C9 solid resin; the tackifier comprises at least one of coumarone resin and terpene resin; the free radical reactant comprises at least one of dicumyl peroxide, benzoyl peroxide or di-tert-butyl peroxide; the anti-spalling agent comprises slaked lime;
the matrix asphalt additive is capable of rapidly restoring the short-term aged matrix asphalt to its original properties.
2. The method of using a matrix asphalt additive prepared by the method of claim 1, wherein the step of mixing and heating the matrix asphalt additive with aged asphalt during asphalt mixing for road paving; the mass ratio of the matrix asphalt additive to the aged asphalt is 10-15:85-90.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212463A (en) * | 1990-01-17 | 1991-09-18 | Mitsui Petrochem Ind Ltd | Composition having vibration-damping property and vibration damper molded from the same composition |
| JP2005048001A (en) * | 2003-07-31 | 2005-02-24 | Toa Doro Kogyo Co Ltd | Asphalt mixture |
| CN103804933A (en) * | 2012-11-13 | 2014-05-21 | 云南云岭高速公路养护绿化工程有限公司 | Quick dry type asphalt regenerant for asphalt pavement and preparation method of asphalt regenerant |
| CN104231640A (en) * | 2013-08-27 | 2014-12-24 | 武汉理工大学 | SBS (styrene-butadiene-styrene) modified asphalt regenerant and preparation method thereof |
| CN105273421A (en) * | 2014-07-23 | 2016-01-27 | 中国石油大学(华东) | Catalytic slurry oil utilization method |
| CN107778887A (en) * | 2016-08-29 | 2018-03-09 | 中国石油化工股份有限公司 | A kind of modified pitch and preparation method thereof |
| CN108410186A (en) * | 2017-12-25 | 2018-08-17 | 甘肃路桥建设集团养护科技有限责任公司 | A kind of special regenerative agent of road surface aged asphalt waste material |
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2020
- 2020-10-10 CN CN202011076404.0A patent/CN114426776B/en active Active
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|---|---|---|---|---|
| JPH03212463A (en) * | 1990-01-17 | 1991-09-18 | Mitsui Petrochem Ind Ltd | Composition having vibration-damping property and vibration damper molded from the same composition |
| JP2005048001A (en) * | 2003-07-31 | 2005-02-24 | Toa Doro Kogyo Co Ltd | Asphalt mixture |
| CN103804933A (en) * | 2012-11-13 | 2014-05-21 | 云南云岭高速公路养护绿化工程有限公司 | Quick dry type asphalt regenerant for asphalt pavement and preparation method of asphalt regenerant |
| CN104231640A (en) * | 2013-08-27 | 2014-12-24 | 武汉理工大学 | SBS (styrene-butadiene-styrene) modified asphalt regenerant and preparation method thereof |
| CN105273421A (en) * | 2014-07-23 | 2016-01-27 | 中国石油大学(华东) | Catalytic slurry oil utilization method |
| CN107778887A (en) * | 2016-08-29 | 2018-03-09 | 中国石油化工股份有限公司 | A kind of modified pitch and preparation method thereof |
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| Title |
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| 改性沥青路面裂缝贴的制备及其性能影响因素;王治等;《新型建筑材料》;20200225(第02期);第2.3节，图5-6 * |
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