Anti-stripping aging resistant warm mix agent, its preparation and application
By preparing anti-stripping and aging-resistant warm mix additives, the problems of asphalt aging and aggregate detachment caused by high-temperature wakes on airport runways have been solved, improving the high-temperature stability and low-temperature ductility of asphalt and reducing smoke emissions and flight accidents.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2022-04-01
- Publication Date
- 2026-06-02
AI Technical Summary
Existing technologies cannot effectively solve the problems of asphalt aging and aggregate detachment caused by the high-temperature exhaust of jet aircraft on airport runways, and warm mix technology has not significantly reduced asphalt fume emissions.
The anti-stripping and aging-resistant warm mix agent contains styrene-butadiene-styrene copolymer, styrene-butadiene rubber, resin and other components. It is prepared by kneading and extrusion to form a paste, which is then mixed with petroleum asphalt to reduce the mixing and construction temperature and improve the anti-stripping and aging resistance.
It significantly improves the anti-stripping and anti-aging properties of asphalt, reduces asphalt fume emissions, adapts to the high-temperature wake environment of aircraft, lowers the preparation and use temperature, improves production efficiency, and reduces the risk of flight accidents.
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of petroleum industry and basic materials chemistry, specifically relating to an anti-stripping and anti-aging warm mix agent, its preparation method and application, which is particularly suitable for airport runway asphalt. Background Technology
[0002] Asphalt mixtures generate significant amounts of asphalt fumes during production and paving, impacting the environment. With increasingly stringent environmental regulations, particularly the implementation of "dual carbon" targets, asphalt pavement construction necessitates reducing asphalt fumes. During use, as the operating temperature of asphalt increases, the volatile organic compounds (VOCs) evaporate more, leading to a greater amount of asphalt fumes. Practical experience has shown that employing warm-mix technology, by lowering the mixing and construction temperatures of asphalt mixtures, is an effective method for reducing asphalt fumes.
[0003] The issue of aggregate detachment on airport runways differs from that on highways. On highways, the main concern is water damage, while on airport runways, the primary concern is the scouring effect of the high-temperature exhaust plumes from jet aircraft. The high temperature (850℃-900℃), strong airflow, and high speed (180m / s) cause the runway surface temperature to rise rapidly, followed by a drop after the aircraft passes, resulting in constant temperature fluctuations. This frequent temperature fluctuation can easily lead to asphalt aging, fatigue, damage, and aggregate detachment on the runway surface. Currently, there are no anti-stripping agents specifically developed to address the issue of asphalt concrete aggregate detachment caused by the high-temperature exhaust plumes from jet aircraft on airport runways.
[0004] During a spray test conducted using a TY-104 aircraft at a summer temperature of 40℃, the highest temperature of the asphalt pavement reached 141℃. At this temperature, multiple areas of the asphalt pavement showed signs of erosion and softening due to the high-temperature exhaust gas emitted by the aircraft, with each area of erosion measuring 3–5 cm². 2 Asphalt runways are constantly subjected to the high-temperature exhaust blasts of aircraft, which easily leads to asphalt aging and the shedding of coarse aggregate from the surface. If this detached aggregate is ingested by an aircraft engine, it can cause a serious flight accident. Therefore, improving the high-temperature stability and resistance to coarse aggregate shedding of asphalt concrete materials is an important research direction for enhancing civil aviation operational safety. Currently, airport asphalt runways worldwide commonly use high-performance polymer-modified asphalt to address pavement deformation and aggregate shedding under the baking of aircraft exhaust blasts and high shear stress. However, the actual results are not ideal; after a period of use, pavement bulging, cracking, and aggregate shedding occur frequently, leading to flight safety hazards and increased maintenance costs. Therefore, there is an urgent need to develop a suitable anti-stripping and aging-resistant warm-mix asphalt material for airport runways. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides an anti-stripping and anti-aging warm mix agent, its preparation method, and its application. When this anti-stripping and anti-aging warm mix agent is used in airport runway asphalt, it can significantly improve the asphalt's resistance to spalling and aging, and also reduce the amount of asphalt fumes generated, which is beneficial to environmental protection.
[0006] This invention provides an anti-stripping and anti-aging warm-mixing agent, which comprises the following raw materials in parts by weight:
[0007] 2-10 parts styrene-butadiene-styrene copolymer, 2-11 parts styrene-butadiene rubber, 1-9 parts styrene-modified phenol, 2-8 parts resin, 2-8 parts alkyl ammonium chloride, 0.8-1.5 parts coupling agent, 0.8-1.3 parts antioxidant, 0.3-0.9 parts surfactant, and 0.5-1.5 parts aromatic oil.
[0008] The anti-stripping and anti-aging warm-mixing agent of the present invention preferably comprises the following raw materials by weight:
[0009] 3-9 parts styrene-butadiene-styrene copolymer, 3-10 parts styrene-butadiene rubber, 2-8 parts styrene-modified phenol, 3-7 parts resin, 3-7 parts alkyl ammonium chloride, 0.9-1.4 parts coupling agent, 0.9-1.2 parts antioxidant, 0.4-0.8 parts surfactant, and 0.6-1.4 parts aromatic oil.
[0010] The styrene-butadiene-styrene copolymer is linear or star-shaped, with an average relative molecular mass of 120,000 to 230,000.
[0011] The styrene-butadiene rubber contains 27wt% to 42wt% styrene by mass; preferably, the particle size of the styrene-butadiene rubber is not greater than 20mm.
[0012] The styrene is one or more of monostyrene, bistyrene, and tristyrene.
[0013] The resin is selected from one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin, and polyamide resin.
[0014] The alkyl ammonium chloride is selected from one or a mixture of two of octadecyltrimethylammonium chloride and hexadecyltrimethylammonium chloride.
[0015] The coupling agent is selected from one or more of silane coupling agents, aluminate coupling agents, and titanate coupling agents.
[0016] The antioxidant is selected from one or more of 2,6-di-tert-butyl-p-cresol, hydroquinone dibenzyl ether, dilaurate thiodipropionate, trinonylphenyl phosphite, octadecyl thiodipropionate, and poly(2,2,4-trimethyl-1,2-dihydroquinone).
[0017] The surfactant is selected from one or more of the following: glyceryl monostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan trioleate, polyethylene glycol monolaurate, and diethylene glycol monolaurate.
[0018] The aromatic oil is a component rich in aromatics, wherein the aromatic content is above 70% by mass fraction, and it can be selected from at least one of reduced-temperature four-line extract oil, furfural refined extract oil, phenol refined extract oil, or catalytic cracking slurry oil.
[0019] A second aspect of the present invention provides a method for preparing the above-mentioned anti-stripping and anti-aging warm-mix agent, comprising:
[0020] (1) Mix and stir the coupling agent, antioxidant, surfactant and aromatic oil;
[0021] (2) Styrene-butadiene-styrene copolymer, styrene-butadiene rubber, polyethylene oxide, resin, alkyl ammonium chloride and the material obtained in step (1) are mixed and extruded to obtain anti-peeling and anti-aging warm mix agent.
[0022] The mixing is achieved using conventional mixing equipment, such as a kneader, which has an extrusion structure at the bottom.
[0023] Furthermore, the mixing temperature in step (1) is 35℃~75℃, and the stirring time is 20~50min;
[0024] Further, the mixing conditions in step (2) are as follows: the mixing temperature is 100℃~130℃, the mixing time is 20~50min; and the extrusion temperature is 100℃~130℃.
[0025] The anti-stripping and anti-aging warm-mix agent prepared by the method provided in the second aspect is a paste at room temperature.
[0026] A third aspect of the present invention provides a spalling-resistant and aging-resistant warm mix asphalt, comprising: petroleum asphalt and the above-mentioned spalling-resistant and aging-resistant warm mix agent.
[0027] In the aforementioned anti-stripping and aging-resistant warm mix asphalt, the amount of anti-stripping and aging-resistant warm mix agent accounts for 2% to 3% of the mass of the anti-stripping and aging-resistant warm mix asphalt.
[0028] Furthermore, in the anti-stripping and aging-resistant warm-mix asphalt, the petroleum asphalt can be conventional petroleum asphalt used for airport runways, and can be at least one of straight-run asphalt, oxidized asphalt, blended asphalt, solvent-de-oiled asphalt, and polymer-modified asphalt.
[0029] The fourth aspect of the present invention provides a method for preparing the anti-stripping and aging-resistant warm mix asphalt, comprising: first heating and melting petroleum asphalt, adding the anti-stripping and aging-resistant warm mix agent, mixing evenly, and obtaining the anti-stripping and aging-resistant warm mix asphalt.
[0030] Furthermore, in the preparation method of the anti-stripping and aging-resistant warm-mix asphalt of the present invention, the asphalt heating and melting temperature is 120℃~140℃, the mixing temperature (under stirring) is 120℃~140℃, and the mixing time is 20~50min.
[0031] The anti-stripping and anti-aging warm mix agent of this invention is particularly suitable for use in airport runway asphalt.
[0032] The anti-stripping and aging-resistant warm-mix asphalt provided by this invention is suitable for use as airport runway asphalt.
[0033] The present invention has the following advantages:
[0034] 1. This invention's anti-stripping and aging-resistant warm-mix agent not only significantly improves the anti-stripping performance of asphalt but also enhances its aging resistance. It exhibits strong adaptability to the high-temperature wake environment of aircraft, improving the anti-stripping performance of airport asphalt runways, reducing aggregate stripping, and thus decreasing the incidence of flight accidents. It also provides a warm-mix effect, reducing the amount of asphalt fumes generated.
[0035] 2. The anti-stripping and aging-resistant warm mix agent of the present invention is a paste at room temperature, which is easy to be compatible with asphalt, reduces the temperature during preparation and use, and shortens the mixing time during preparation and use. When using the anti-stripping and aging-resistant warm mix agent of the present invention to prepare anti-stripping and aging-resistant warm mix asphalt, no development process is required, thus improving production efficiency.
[0036] 3. In the preparation method of the anti-stripping and aging-resistant warm mix agent of the present invention, a coupling agent is used as an initiator. Styrene-butadiene-styrene copolymer, styrene-butadiene rubber, polyethylene oxide, resin, alkyl ammonium chloride, antioxidant, surfactant, and aromatic oil are fused in a kneader and screw extrusion process. The components work together to form a product with high viscosity and flexibility, as well as excellent polarity and anti-aging properties. This allows the anti-stripping and aging-resistant warm mix agent to provide asphalt with excellent resistance to high-temperature stripping and aging under high-temperature conditions. The aromatic oil facilitates the fusion of components, reduces reaction conditions, saves energy, and improves low-temperature performance, as well as the low-temperature ductility of asphalt. In particular, pre-dissolving the coupling agent, antioxidant, and surfactant in a smaller amount in the aromatic oil promotes uniform dispersion and dissolution. The synergistic effect of the aromatic oil and surfactant reduces the friction between asphalt molecular layers, lowers the viscosity of the asphalt, thereby achieving a warm mix effect, reducing the service temperature of the asphalt, and decreasing the amount of harmful gases generated. Therefore, through the synergistic effect of various materials, the anti-stripping and anti-aging warm mix agent has the ability to resist high-temperature stripping and aging, can adapt to the sweeping of the runway surface by the high-temperature exhaust of aircraft, reduce stone stripping, and can also play a warm mix effect in the production and paving of asphalt mixtures, reducing the amount of asphalt smoke emissions.
[0037] 4. The preparation conditions of the anti-shedding and anti-aging warm-mix agent of the present invention are more moderate, and the mixing reaction time in the preparation process of the anti-shedding and anti-aging warm-mix agent is greatly shortened. The preparation process is also simplified, requiring only one kneader and eliminating the need for an extruder, thus improving production efficiency. Detailed Implementation
[0038] The technical solution of the present invention will be described in detail below with reference to the embodiments, but the present invention is not limited to the following embodiments. In the present invention, wt% is a mass fraction.
[0039] This invention presents a method for simulating high-temperature aircraft exhaust blast: An aircraft engine (e.g., a replaced engine) is connected to a cylindrical, heated, high-temperature resistant material at its tail. During the experiment, the asphalt to be tested is melted and placed in a metal tray, spread out as a thin film with a thickness of 3mm ± 0.3mm. The tray containing the asphalt film is placed at the bottom of the cylindrical body and secured firmly. The bottom of the cylindrical body has a heating function to maintain the asphalt temperature in the tray at 60℃ ± 20℃ (simulating road surface temperature during summer). The engine is turned on, allowing high-temperature exhaust gas to enter from one end of the cylindrical body and exit from the other, blowing over the asphalt film continuously for 30 minutes, followed by a 10-minute pause, repeating this process multiple times. One experimental cycle is 240 hours, starting from the initial blowing. The asphalt is then removed, and its properties are analyzed and compared with those before the simulation experiment. This simulates the condition of asphalt on airport runways (especially the takeoff section) under long-term exposure to high-temperature aircraft exhaust blast, examining changes in asphalt properties, particularly its resistance to shedding.
[0040] In this invention, the asphalt adhesion strength is obtained by testing with a pull-out tester. The instrument and testing method are as follows:
[0041] Instruments and equipment: PosiTest AT-A pull-out tester; tester parameters: pull-out rate 150 psi / s; test range 0-2000 psi; test method as follows:
[0042] Weigh 0.03g of asphalt onto the test surface of the spindle. Place the asphalt-coated spindle on a hot plate. After the asphalt melts, spread it evenly within 10 seconds. Simultaneously, quickly transfer a preheated stainless steel plate to a horizontal workbench. Place the asphalt-coated spindle onto the stainless steel plate and allow it to cool to room temperature (approximately 1 hour). The liquid asphalt spreads evenly under the weight of the spindle and, after cooling, bonds to the spindle and stainless steel plate, forming an asphalt film thickness of approximately 0.1mm. Place the cooled stainless steel plate and spindle in an environmental chamber (temperature: 20℃; relative humidity: 50%RH) for 1 hour, then remove them and test the adhesion using a PosiTest AT-A tester. Record the pull-out strength value when the spindle separates from the metal plate. This value characterizes the asphalt's resistance to detachment; a higher value indicates better resistance.
[0043] Example 1
[0044] Pre-crush styrene-butadiene rubber with a styrene content of 27 wt% to a particle size of 6–14 mm, and set aside. Heat the kneader for later use.
[0045] Step (1):
[0046] Weigh 9.0 kg of aluminate coupling agent, 9.0 kg of trinonylphenyl phosphite, and 4.0 kg of sorbitan monolaurate, and add them to 6.0 kg of preheated reduced-temperature IV extract oil. Stir at 36°C for 22 min.
[0047] Step (2):
[0048] Weigh 30.0 kg of linear styrene-butadiene-styrene copolymer with an average relative molecular mass of 120,000, 30.0 kg of pulverized styrene-butadiene rubber, 20.0 kg of tristyrene-modified phenol, 30.0 kg of phenolic resin, and 30.0 kg of hexadecyltrimethylammonium chloride. Place these materials together with the substances obtained in step (1) in a preheated kneader for mixing at a temperature of 102°C for 22 min. Then extrude the mixture at a temperature of 102°C. The resulting anti-peeling and aging-resistant warm mix agent is obtained. The component dosages for preparing the anti-peeling and aging-resistant warm mix agent are shown in Table 1.
[0049] Example 2
[0050] Pre-crush styrene-butadiene rubber with a styrene content of 42 wt% to a particle size of 7–17 mm, and set aside. Heat the kneader for later use.
[0051] Step (1):
[0052] Weigh 14.0 kg of titanate coupling agent, 12.0 kg of 2,6-di-tert-butyl-p-cresol, and 8.0 kg of sorbitan tristearate, and add them to 14.0 kg of preheated furfural refined extract oil. Stir at 74°C for 49 min.
[0053] Step (2):
[0054] 90.0 kg of star-shaped styrene-butadiene-styrene copolymer with an average relative molecular mass of 230,000, 100.0 kg of pulverized styrene-butadiene rubber, 80.0 kg of monostyrene phenol, 70.0 kg of rosin resin, and 70.0 kg of octadecyltrimethylammonium chloride were weighed and placed together with the material obtained in step (1) in a preheated kneader for mixing at a mixing temperature of 129°C for 49 min; then extruded at a temperature of 129°C. The resulting anti-peeling and aging-resistant warm mix agent was obtained. The component dosages for preparing the anti-peeling and aging-resistant warm mix agent are shown in Table 1.
[0055] Example 3
[0056] Pre-crush styrene-butadiene rubber with a styrene content of 33 wt% to a particle size of 4–18 mm, and set aside. Heat the kneader for later use.
[0057] Step (1):
[0058] Weigh 11.5 kg of silane coupling agent, 10.5 kg of dilaurate thiodipropionate, and 6.0 kg of polyethylene glycol monolaurate, and add them to 10.0 kg of preheated catalytic cracking slurry. Stir at 55°C for 35 min.
[0059] Step (2):
[0060] Weigh 60.0 kg of linear styrene-butadiene-styrene copolymer with an average relative molecular mass of 170,000, 65.0 kg of pulverized styrene-butadiene rubber, 50.0 kg of bis-styrene phenol, 50.0 kg of petroleum resin, and 50.0 kg of hexadecyltrimethylammonium chloride. Place them together with the material obtained in step (1) in a preheated kneader for mixing at a mixing temperature of 115°C for 35 min. Then extrude at a temperature of 115°C. Obtain the anti-peeling and aging-resistant warm mix agent. The component dosages for preparing the anti-peeling and aging-resistant warm mix agent are shown in Table 1.
[0061] Example 4
[0062] The anti-stripping and aging-resistant warm mix additive obtained in Example 1 was added to petroleum asphalt (Zhenhai 70A) produced by Zhenhai Petrochemical Company, which had a penetration of 67 dmm at 25°C and had been melted at 122°C. The weight ratio of petroleum asphalt to anti-stripping and aging-resistant warm mix additive was 97:3. The mixture was stirred at a constant temperature of 122°C for 22 minutes to obtain anti-stripping and aging-resistant warm mix asphalt. The asphalt service temperature is shown in Table 2.
[0063] The adhesion strength of the anti-stripping and aging-resistant warm-mix asphalt was tested using a pull-out tester, and the results are shown in Table 3. The asphalt was then subjected to a simulated experiment under the high-temperature wake environment of an aircraft. After one cycle of testing, a pull-out test was performed, and the results are shown in Table 3.
[0064] Example 5
[0065] The anti-stripping and aging-resistant warm mix additive obtained in Example 2 was added to petroleum asphalt (Zhenhai 70A) produced by Zhenhai Petrochemical Company, which had a penetration of 67 dmm at 25°C and had been melted at 138°C. The weight ratio of petroleum asphalt to anti-stripping and aging-resistant warm mix additive was 97.5:2.5. The mixture was stirred at a constant temperature of 138°C for 48 minutes to obtain anti-stripping and aging-resistant warm mix asphalt. The asphalt service temperature is shown in Table 2.
[0066] The adhesion strength of the anti-stripping and aging-resistant warm-mix asphalt was tested using a pull-out tester, and the results are shown in Table 3. The asphalt was then subjected to a simulated experiment under the high-temperature wake environment of an aircraft. After one cycle of testing, a pull-out test was performed, and the results are shown in Table 3.
[0067] Example 6
[0068] The anti-stripping and aging-resistant warm mix additive obtained in Example 3 was added to petroleum asphalt (Zhenhai 70A) produced by Zhenhai Petrochemical Company, which had a penetration of 67 dmm at 25°C and had been melted at 130°C. The weight ratio of petroleum asphalt to anti-stripping and aging-resistant warm mix additive was 98:2. The mixture was stirred at a constant temperature of 130°C for 35 minutes to obtain anti-stripping and aging-resistant warm mix asphalt. The asphalt service temperature is shown in Table 2.
[0069] The adhesion strength of the anti-stripping and aging-resistant warm-mix asphalt was tested using a pull-out tester, and the results are shown in Table 3. The asphalt was then subjected to a simulated experiment under the high-temperature wake environment of an aircraft. After one cycle of testing, a pull-out test was performed, and the results are shown in Table 3.
[0070] Comparative Example 1
[0071] The service temperature of the asphalt (Zhenhai 70A) produced by Zhenhai Petrochemical Company with a penetration of 67 dmm at 25℃ is shown in Table 2. For comparison, the adhesion strength of Zhenhai 70A asphalt produced by Zhenhai Petrochemical Company, tested by a pull-out tester, is also listed in Table 3; and a simulated experiment of Zhenhai 70A produced by Zhenhai Petrochemical Company under the high temperature wake environment of an aircraft was also conducted. After one cycle of the test, pull-out tests were performed separately, and the results are shown in Table 3.
[0072] Comparative Example 2
[0073] For comparison, JW-AS1, a commercial anti-stripping agent produced by Shenzhen Jiashengwei, was added to petroleum asphalt (Zhenhai 70A) produced by Zhenhai Petrochemical Company, which had a penetration of 67 dmm at 25℃ and had been melted at 138℃. The weight ratio of petroleum asphalt to commercial anti-stripping agent was 97.5:2.5. The mixture was stirred at a constant temperature of 138℃ for 48 minutes to obtain anti-stripping asphalt. The service temperature of this asphalt is shown in Table 2.
[0074] The adhesion strength of the anti-stripping asphalt was tested using a pull-out tester, and the results are shown in Table 3. The asphalt was then subjected to a simulated experiment under the high-temperature wake environment of an aircraft. After one cycle of testing, a pull-out test was performed, and the results are shown in Table 3.
[0075] Table 1. Component dosage for preparing anti-stripping and aging-resistant warm-mixing agent
[0076] Material weight / kg Example 1 Example 2 Example 3 Styrene-butadiene-styrene copolymer 30.0 90.0 60.0 Styrene-butadiene rubber 30.0 100.0 65.0 Styrified phenol 20.0 80.0 50.0 resin 30.0 70.0 50.0 Alkyl ammonium chloride 30.0 70.0 50.0 Coupling agent 9.0 14.0 11.5 antioxidants 9.0 12.0 10.5 surfactants 4.0 8.0 6.0 Aromatic oils 6.0 14.0 10.0
[0077] Table 2 Comparison of Asphalt Service Temperature
[0078]
[0079]
[0080] Table 3 Results of Asphalt Pull-out Tests
[0081] Adhesion strength / psi Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 No simulation experiment was conducted. 550 568 591 398 443 After the simulation experiment 585 618 623 323 457
[0082] As shown in Table 2, the asphalt with the anti-stripping and anti-aging warm mix agent of the present invention has significantly reduced the mixing temperature of asphalt and aggregate and the compaction temperature of asphalt concrete during use, which can save energy, reduce the amount of asphalt fumes generated, and is beneficial to environmental protection.
[0083] As shown in Table 3, adding the anti-stripping and aging-resistant warm mix agent of this invention to asphalt significantly improves the adhesion strength and anti-stripping performance of the asphalt. After one cycle of aircraft high-temperature wake simulation experiments, the adhesion strength of the asphalt with the anti-stripping and aging-resistant warm mix agent of this invention not only did not decrease but actually increased, indicating that the anti-stripping and aging-resistant warm mix agent of this invention not only improves the anti-stripping performance of asphalt but also has strong aging resistance and strong adaptability to the high-temperature wake environment of aircraft. In contrast, the adhesion strength of the asphalt without the anti-stripping and aging-resistant warm mix agent decreased significantly after the simulation experiment. The addition of a commercially available anti-stripping agent, compared with the anti-stripping and aging-resistant warm mix agent of this invention, resulted in a smaller improvement in adhesion strength, and the increase in adhesion strength after the simulation experiment was also smaller.
Claims
1. A peeling and aging resistant warm mix agent, comprising, by weight parts: 2-10 parts styrene-butadiene-styrene copolymer, 2-11 parts styrene-butadiene rubber, 1-9 parts styrene-modified phenol, 2-8 parts resin, 2-8 parts alkyl ammonium chloride, 0.8-1.5 parts coupling agent, 0.8-1.3 parts antioxidant, 0.3-0.9 parts surfactant, and 0.5-1.5 parts aromatic oil; The styrene-butadiene-styrene copolymer is linear or star-shaped, with an average relative molecular mass of 120,000 to 230,000. The styrene-butadiene rubber contains 27wt% to 42wt% by mass. The resin is selected from one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin, and polyamide resin; The coupling agent is selected from one or more of silane coupling agents, aluminate coupling agents, and titanate coupling agents.
2. The anti-stripping and anti-aging warm-mixing agent according to claim 1, characterized in that: By weight, it comprises the following raw materials: 3-9 parts styrene-butadiene-styrene copolymer, 3-10 parts styrene-butadiene rubber, 2-8 parts styrene-modified phenol, 3-7 parts resin, 3-7 parts alkyl ammonium chloride, 0.9-1.4 parts coupling agent, 0.9-1.2 parts antioxidant, 0.4-0.8 parts surfactant, and 0.6-1.4 parts aromatic oil.
3. The anti-stripping and aging-resistant warm-mixing agent according to claim 1 or 2, characterized in that: The alkyl ammonium chloride is selected from one or a mixture of two of octadecyltrimethylammonium chloride and hexadecyltrimethylammonium chloride.
4. The anti-stripping and aging-resistant warm-mixing agent according to claim 1 or 2, characterized in that: The antioxidant is selected from one or more of 2,6-di-tert-butyl-p-cresol, hydroquinone dibenzyl ether, dilaurate thiodipropionate, trinonylphenyl phosphite, octadecyl thiodipropionate, and poly(2,2,4-trimethyl-1,2-dihydroquinone).
5. The anti-stripping and aging-resistant warm-mixing agent according to claim 1 or 2, characterized in that: The surfactant is selected from one or more of the following: glyceryl monostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan trioleate, polyethylene glycol monolaurate, and diethylene glycol monolaurate.
6. The anti-stripping and aging-resistant warm-mixing agent according to claim 1 or 2, characterized in that: The aromatic oil is a component rich in aromatics, wherein the aromatic content is above 70% by mass fraction.
7. The anti-stripping and aging-resistant warm-mixing agent according to claim 6, characterized in that: The aromatic oil is selected from at least one of the following: reduced-temperature four-line extracted oil, furfural refined extracted oil, phenol refined extracted oil, or catalytic cracking slurry oil.
8. A method for preparing the anti-stripping and anti-aging warm-mix agent according to any one of claims 1-7, comprising: (1) Mix the coupling agent, antioxidant, surfactant and aromatic oil together; (2) Styrene-butadiene-styrene copolymer, styrene-butadiene rubber, polyethylene oxide, resin, alkyl ammonium chloride and the material obtained in step (1) are mixed and extruded to obtain anti-peeling and anti-aging warm mix agent.
9. The method according to claim 8, characterized in that: The mixing temperature in step (1) is 35℃~75℃, and the stirring time is 20~50min; and / or, The mixing conditions for step (2) are as follows: mixing temperature is 100℃~130℃, mixing time is 20~50min; extrusion temperature is 100℃~130℃.
10. A spalling-resistant and aging-resistant warm-mix asphalt, comprising: Petroleum asphalt and the anti-stripping and anti-aging warm mix agent according to any one of claims 1-7.
11. The anti-stripping and aging-resistant warm-mix asphalt according to claim 10, characterized in that: In the aforementioned anti-stripping and aging-resistant warm mix asphalt, the amount of anti-stripping and aging-resistant warm mix agent accounts for 2% to 3% of the mass of the anti-stripping and aging-resistant warm mix asphalt.
12. The anti-stripping and aging-resistant warm-mix asphalt according to claim 10, characterized in that: The petroleum asphalt is at least one of straight-run asphalt, oxidized asphalt, blended asphalt, solvent-de-oiled asphalt, and polymer-modified asphalt.
13. A method for preparing the anti-stripping and aging-resistant warm-mix asphalt according to any one of claims 10-12, comprising: First, the petroleum asphalt is heated and melted, then the anti-stripping and aging-resistant warm mix agent is added and mixed evenly to obtain the anti-stripping and aging-resistant warm mix asphalt.
14. The preparation method according to claim 13, characterized in that: The heating and melting temperature of the petroleum asphalt is 120℃~140℃, the mixing temperature is 120℃~140℃, and the mixing time is 20~50min.
15. The application of the anti-stripping and aging-resistant warm mix agent according to any one of claims 1-7 or the anti-stripping and aging-resistant warm mix asphalt according to any one of claims 8-12 in airport runways.
Citation Information
Patent Citations
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