CN115678199A - Anti-shedding agent and preparation method and application thereof - Google Patents
Anti-shedding agent and preparation method and application thereof Download PDFInfo
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- CN115678199A CN115678199A CN202110847281.4A CN202110847281A CN115678199A CN 115678199 A CN115678199 A CN 115678199A CN 202110847281 A CN202110847281 A CN 202110847281A CN 115678199 A CN115678199 A CN 115678199A
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- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 claims description 3
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- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims 1
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Abstract
The invention discloses an anti-shedding agent and a preparation method and application thereof. The anti-falling agent comprises the following raw materials: styrene-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, resin, nitrogen-containing aromatic compound, p-phenylenediamine compound, coupling agent, hindered phenol compound and methacrylate compound. The preparation method of the anti-shedding agent comprises the following steps: and (3) uniformly mixing the materials, and carrying out mixing and extrusion granulation to obtain the anti-falling agent. The anti-shedding agent is granular, is used in airport asphalt, can obviously improve the adhesion strength of the asphalt and the anti-shedding performance, and has stronger adaptability to the high-temperature wake environment of an airplane.
Description
Technical Field
The invention belongs to the field of petroleum industry and basic material chemistry, and particularly relates to a novel anti-shedding agent and a preparation method thereof, which are particularly suitable for airport asphalt runways.
Background
The airfield runway surface material is divided into two types, namely cement concrete and asphalt concrete, wherein the former is mainly applied to branch airports, and the latter is mainly applied to asphalt concrete finishing of cement runways in trunk airports or branch airports. In China, airports with more than ten million levels of passenger flow mainly adopt asphalt concrete materials as runway pavement materials. The working performance of the asphalt concrete material for the airport runway is obviously different from that of the asphalt concrete material for the common highway, and the working performance is mainly shown in the following two points: firstly, the high-temperature airflow ejected by the jet aircraft seriously influences the stability of the asphalt concrete material; secondly, after the oil content of the asphalt concrete material is reduced, the coarse aggregate on the surface is easy to loosen to form foreign invaders (FOD), and once the FOD is sucked into an aircraft engine, serious flight accidents are caused. Therefore, the improvement of the high-temperature stability and the coarse aggregate shedding resistance of the asphalt concrete material is an important research direction for improving the civil aviation operation safety capability. At present, airport runways in the world are generally paved by polymer modified asphalt with good high-temperature performance so as to deal with the problems of airplane wake baking and road surface deformation and threshing under high shear stress, but the effect is not ideal, and after the airport runway is used for a period of time, the road surface bulges and cracks and the aggregate falls frequently, so that huge flight potential safety hazards and maintenance cost are brought. Therefore, the development of a high-temperature-resistant and anti-falling asphalt material suitable for being used on an airport runway is urgently needed, a special high-temperature-resistant and anti-falling evaluation method for the airport asphalt is established, a complete set of systematic and scientific matching technology is formed, and the requirement of the high-quality asphalt material on the world and the country in the next thirty years is met.
The problem of stone falling on an airport runway is different from the situation on the highway, the highway is mainly used for water damage, the sweeping effect of high-temperature wake flow of a jet plane is mainly considered on the airport runway, the temperature is high (850-900 ℃), the airflow is large, the airflow speed is high (180 m/s), the temperature of the runway surface is rapidly increased, the temperature of the plane is reduced after passing, and the plane is always in frequent temperature fluctuation, so that asphalt on the runway surface is easy to age, fatigue, damage and thresh. At present, no anti-shedding agent developed specially for solving the problem of asphalt concrete aggregate shedding caused by the influence of high-temperature wake flow of a jet plane on an airport runway exists.
Disclosure of Invention
Aiming at the problem of aggregate shedding faced by an airport asphalt runway, the invention provides a novel anti-shedding agent particularly suitable for the airport asphalt runway, and a preparation method and application thereof. When the anti-dropping agent is used for the asphalt runway of the airport, the anti-dropping performance of the asphalt can be obviously improved.
The invention provides an anti-shedding agent which comprises the following raw materials in parts by weight:
2 to 9 parts of styrene-butadiene-styrene copolymer,
2 to 6 parts of ethylene-vinyl acetate copolymer,
5 to 12 parts of resin,
2 to 7 parts of nitrogen-containing aromatic compound,
1 to 4 parts of p-phenylenediamine compounds,
0.1 to 0.5 portion of coupling agent,
0.1 to 0.5 part of hindered phenol compounds,
1 to 4 parts of methacrylate compounds.
The anti-shedding agent disclosed by the invention preferably comprises the following raw materials in parts by mass:
3 to 8 parts of styrene-butadiene-styrene copolymer,
2 to 5 parts of ethylene-vinyl acetate copolymer,
6 to 11 parts of resin,
2 to 6 parts of nitrogen-containing aromatic compound,
1 to 3 parts of p-phenylenediamine compounds,
0.2 to 0.4 portion of coupling agent,
0.2 to 0.4 part of hindered phenol compounds,
1 to 3 parts of methacrylate compounds.
The styrene-butadiene-styrene copolymer is linear or star-shaped, and the average relative molecular mass is 10-26 ten thousand.
In the ethylene-vinyl acetate copolymer, the mass content of the combined vinyl acetate is 21-26 wt%.
The resin is one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin and polyamide resin.
The nitrogen-containing aromatic compound is at least one selected from quaternary ammonium pyridine salt and diaminopyrimidine hydrochloride. The quaternary pyridinium salt may be referred to as an azabenzene quaternary ammonium salt, and is at least one selected from N-phenacyl pyridinium quaternary ammonium salt, O- (7-azabenzotriazol-1-yl) -N, N, N ', N' -tetramethyluronium tetrafluoroborate, N-cyanomethyl pyridinium chloride, N- (2-acetylpyridyl) pyridinium quaternary ammonium salt, N-acetoxy pyridinium quaternary ammonium salt, N-nitrile methyl pyridinium quaternary ammonium salt, N-acetoxy pyridinium quaternary ammonium salt, 2-mercaptopyridine quaternary ammonium salt, N- (2-methylpropenyl) methyl pyridinium quaternary ammonium salt, and bromo N-phenacyl pyridinium quaternary ammonium salt. The diaminopyrimidine hydrochloride is at least one selected from the group consisting of 2, 5-diamino-4, 6-dihydroxypyrimidine hydrochloride, 4, 5-diamino-2, 6-dihydroxypyrimidine hydrochloride, and 2, 4-diaminopyrimidin-5-ol dihydrochloride.
The p-phenylenediamine compound is one or more of N, N ' -diphenyl-p-phenylenediamine, N-cyclohexyl-N ' -phenyl-p-phenylenediamine and N-phenyl-N ' -isopropyl-p-phenylenediamine.
The coupling agent is one or more of silane coupling agent (at least one of types KH550, KH560 and KH 570), aluminate coupling agent and titanate coupling agent.
The hindered phenol compound comprises one or more of 2, 8-di-tert-butyl-4-methylphenol, tetra- [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl alcohol ester and 1,3,5- (3, 5-di-tert-butyl-4-hydroxyphenyl) s-triazine-2, 4,6 (1H, 3H, 5H) trione.
The methacrylate compound is one or a mixture of 2-hydroxyethyl methacrylate, 2-ethylhexyl methacrylate and ethyl methacrylate.
The second aspect of the present invention provides a method for preparing the above anti-shedding agent, comprising:
the anti-dropping agent is prepared by uniformly mixing styrene-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, resin, nitrogen-containing aromatic compound, p-phenylenediamine compound, coupling agent, hindered phenol compound, methacrylate compound and the like, and then mixing and granulating the mixture.
The mixing is carried out using conventional mixing devices, such as kneaders. The mixing conditions were as follows: the mixing temperature is 140-160 ℃, and the mixing time is 40-80min.
The granulation is extrusion granulation, and can be realized by a conventional extrusion granulation device, such as a screw extruder. The extrusion granulation conditions were as follows: the extrusion granulation temperature is 140-160 ℃.
The anti-shedding agent prepared by the method provided by the second aspect is granular, and the granularity can be 2-5 mm.
In a third aspect, the present invention provides a pitch resistant to stripping, comprising: petroleum asphalt and the anti-shedding agent.
In the anti-stripping asphalt, the dosage of the anti-stripping agent accounts for 2-3% of the mass of the anti-stripping asphalt.
In the anti-stripping asphalt, the petroleum asphalt can be conventional petroleum asphalt used for airport runways and is at least one of straight-run asphalt, oxidized asphalt, blended asphalt, solvent deoiled asphalt and polymer modified asphalt.
The fourth aspect of the invention provides a preparation method of the anti-falling asphalt, which comprises the following steps: heating and melting petroleum asphalt, adding the anti-shedding agent, stirring until the mixture is uniformly mixed, and then developing to obtain the anti-shedding asphalt.
In the preparation method of the anti-falling asphalt, the heating and melting temperature of the asphalt is 140-160 ℃, the stirring temperature under constant temperature is 140-160 ℃, and the stirring time can be 40-80min. The development temperature is 140-160 ℃, and the development time is 4-8 hours.
The anti-shedding agent is particularly suitable for being applied to asphalt of airport runways.
The anti-stripping asphalt provided by the invention is suitable for being used as asphalt for airfield runways.
The invention has the following advantages:
1. the anti-shedding agent disclosed by the invention not only can obviously improve the anti-shedding performance of asphalt, but also has strong adaptability to the high-temperature wake environment of an airplane, can improve the anti-shedding performance of an asphalt runway of an airport, reduces the shedding of aggregates and can reduce the incidence rate of flight accidents.
2. The anti-shedding agent is granular and is easy to transport and store.
3. According to the preparation method of the anti-shedding agent, the nitrogen-containing aromatic compound is used as an initiator, and under the assistance of the coupling agent, the styrene-butadiene-styrene copolymer, the ethylene-vinyl acetate copolymer, the resin, the nitrogen-containing aromatic compound, the p-phenylenediamine compound and the like are subjected to grafting reaction in a kneading machine and in a screw extrusion process, so that all substances can be quickly and well combined, the formed product has high viscosity and flexibility and good polarity, and the anti-shedding agent can enable asphalt to have better high-temperature shedding resistance in a high-temperature environment. The methacrylate compound is added, so that the adhesion strength between the asphalt and stone is further enhanced. The addition of hindered phenol compounds can improve the anti-aging capability of the substances containing unsaturated bonds, and further improve the anti-shedding agent and the heat aging resistance of asphalt. Therefore, the anti-stripping agent of the invention comprehensively strengthens the adhesion strength of asphalt to stone materials from various aspects and improves the high-temperature stripping resistance of the asphalt in airports.
4. The preparation condition of the anti-stripping agent is more mild, the mixing reaction time in the preparation process of the anti-stripping agent and the development time in the preparation process of the anti-stripping asphalt are greatly shortened, and the production efficiency is improved.
Detailed Description
The following examples are given to illustrate the technical aspects of the present invention in detail, but the present invention is not limited to the following examples. In the present invention, wt% is a mass fraction.
The invention relates to an aircraft high-temperature wake flow simulation experiment method, which comprises the following steps: the tail part of the engine is linked with a straight cylinder type cylinder body made of high-temperature resistant materials with a heating function by using an airplane engine (such as a renewed engine). During the experiment, the asphalt to be tested is placed in a metal tray after being melted, and is spread flatly to form a film, wherein the thickness of the film is 3mm +/-0.3 mm. And (3) placing the tray filled with the asphalt film at the bottom in the cylinder body, and firmly fixing. The bottom of barrel has the heating function, guarantees that the pitch temperature in the tray maintains 60 degrees centigrade +/-20 ℃ (road surface temperature when simulation summer high temperature). And starting the engine to enable high-temperature tail gas of the engine to enter from one end of the straight cylinder and to be discharged from the other end of the straight cylinder, blowing the high-temperature tail gas above the asphalt film for 30 minutes and stopping for 10 minutes, and continuously repeating the steps for multiple times. One experimental period was 240 hours from the initial start of blowing. And then taking out the asphalt, analyzing various performances, and comparing the performances with the performances before the simulation experiment. Therefore, the condition of asphalt on an airport runway (particularly a takeoff section) when the asphalt is subjected to high-temperature tail gas blowing of an airplane for a long time is simulated, and the change of the asphalt property, particularly the change of the anti-falling performance is inspected.
In the present invention, the adhesion strength of asphalt is measured by a pull tester. The instrument and test method are as follows:
instruments and equipment: the drawing tester with the model of Positest AT-A has the following parameters: a drawing rate of 150psi/s; testing range 0-2000psi; the test method is as follows:
weighing 0.03g of asphalt on an experimental surface of a spindle; placing the spindles with the asphalt on an electric hot plate, after the asphalt is melted, uniformly coating the asphalt within 10s, simultaneously quickly transferring the preheated white steel plate to a horizontal operation table, buckling the spindles with the uniformly coated asphalt on the white steel plate, and standing and cooling to room temperature (about 1 h). The liquid asphalt is uniformly spread under the action of the gravity of the spindle, the spindle and the white steel plate are bonded after cooling, and the thickness of the asphalt film is about 0.1mm. The white steel plate and the spindle cooled to room temperature were placed in an environmental chamber (temperature: 20 ℃; relative humidity: 50 Rh%) and were taken out after being thermostatted for 1 hour, and adhesion was tested using a Positest AT-A tester. And recording the drawing strength value when the spindle is separated from the metal plate. The anti-falling performance of the asphalt is characterized by the numerical value, and the larger the numerical value is, the better the anti-falling performance is.
Example 1
Weighing 21.0kg of styrene-butadiene-styrene copolymer with the average relative molecular mass of 11 ten thousand, 21.0kg of ethylene-vinyl acetate copolymer with the combined vinyl acetate content of 21wt%, 51.0kg of C5 petroleum resin, 21.0kg of N- (2-acetylpyridyl) pyridine quaternary ammonium salt, 11.0kg of N, N' -diphenyl-p-phenylenediamine, 1.1kg of silane coupling agent (KH 560), 1.1kg of 2, 8-di-tert-butyl-4-methylphenol and 11.0kg of 2-hydroxyethyl methacrylate, and placing the materials in a preheated kneader for kneading at the kneading temperature of 142 ℃ for 42min; then, extrusion granulation is carried out, and the extrusion temperature is 142 ℃. Cutting into granules with a particle size of 2mm to obtain the anti-shedding agent. The proportions of the components are shown in Table 1.
Example 2
55.0kg of styrene-butadiene-styrene copolymer with the average relative molecular mass of 25 ten thousand, 35.0kg of ethylene-vinyl acetate copolymer with the combined vinyl acetate content of 26wt%, 85.0kg of terpene resin, 40.0 kg of N-acetoxypyridine quaternary ammonium salt, 20.0kg of N-cyclohexyl-N' -phenyl-p-phenylenediamine, 3.0kg of aluminate coupling agent, 3.0kg of tetra- [3- (3, 5-di-tert-butyl-4 hydroxyphenyl) propionic acid ] pentaerythritol ester and 20.0kg of 2-ethylhexyl methacrylate are weighed and placed in a preheated kneader for mixing at the mixing temperature of 158 ℃ for 78min; then extruding and granulating, wherein the extrusion temperature is 158 ℃. Cutting into granules with a particle size of 2mm to obtain the anti-shedding agent. The distribution ratio of each component is shown in table 1.
Example 3
Weighing 78.0kg of styrene-butadiene-styrene copolymer with the average relative molecular mass of 20 ten thousand, 48.0kg of ethylene-vinyl acetate copolymer with the combined vinyl acetate content of 24 weight percent, 100.0kg of polyamide resin, 58.0 kg of 4, 5-diamino-2, 6-dihydroxypyrimidine hydrochloride, 28.0kg of N-phenyl-N' -isopropyl-p-phenylenediamine, 3.8kg of titanate coupling agent, 3.8kg of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecanol propionate and 28.0kg of ethyl methacrylate, putting the mixture into a preheated kneader for kneading at the temperature of 150 ℃ for 60min; then extruding and granulating, wherein the extrusion temperature is 150 ℃. Cutting into granules with a particle size of 2mm to obtain the anti-shedding agent. The distribution ratio of each component is shown in table 1.
Example 4
The anti-shedding agent obtained in example 1 was added to molten petroleum asphalt with a penetration of 70dmm at 25 ℃ (zilu 70) manufactured by zilu petrochemical company, petroleum asphalt: the weight ratio of the anti-shedding agent is 97:3. stirring at constant temperature of 142 deg.C for 42min, and developing at constant temperature of 142 deg.C for 4 hr to obtain anti-falling asphalt.
The adhesion strength of the anti-drop asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-drop asphalt is subjected to a simulation experiment under the high-temperature wake flow environment of an airplane, a drawing test is carried out after a period of test, and the result is shown in table 2.
Example 5
The anti-shedding agent obtained in example 2 was added to molten petroleum asphalt having a penetration of 70dmm at 25 c (zilu 70) produced by zilu petrochemical company, which had: the weight ratio of the anti-shedding agent is 97.5:2.5. stirring at constant temperature of 158 ℃ for 78min, and then developing at constant temperature of 158 ℃ for 8 hours to obtain the anti-stripping asphalt.
The adhesion strength of the anti-dropping asphalt was measured by a drawing tester, and the results are shown in Table 2. The anti-drop asphalt is subjected to a simulation experiment under the high-temperature wake flow environment of an airplane, a drawing test is carried out after a period of test, and the result is shown in table 2.
Example 6
The anti-shedding agent obtained in example 3 was added to molten petroleum asphalt having a penetration of 70dmm at 25 c (zilu 70) produced by zilu petrochemical company, which had: the weight ratio of the anti-falling agent is 98:2. stirring at constant temperature of 150 deg.C for 60min, and developing at 150 deg.C for 6 hr to obtain anti-drop asphalt.
The adhesion strength of the anti-dropping asphalt was measured by a drawing tester, and the results are shown in Table 2. The anti-drop asphalt is subjected to a simulation experiment under the high-temperature wake flow environment of an airplane, a drawing test is carried out after a period of test, and the result is shown in table 2.
Comparative example 1
For comparison, the adhesion strength of a pull tester test of 70A grade asphalt (ziru 70) produced by ziru petrochemical company is also listed in table 2; 70A-grade asphalt (Qilu 70) produced by the Qilu petrochemical company is also subjected to a simulation experiment in the high-temperature wake environment of an airplane, and drawing experiments are respectively carried out after a period of experiment, and the results are shown in Table 2.
Comparative example 2
For comparison, a commercial particulate anti-sloughing agent JW-AS1 produced by shenzhen jiashenwei was added to a molten petroleum asphalt with a penetration of 70dmm at 25 ℃ (zilu 70A) produced by zilu petrochemical company, the petroleum asphalt: the weight ratio of the anti-shedding agent is 97.5:2.5. stirring at constant temperature of 158 ℃ for 78min, and then developing at constant temperature of 158 ℃ for 8 hours to obtain the anti-stripping asphalt.
The adhesion strength of the anti-dropping asphalt was measured by a drawing tester, and the results are shown in Table 2. The anti-drop asphalt is subjected to a simulation experiment under the high-temperature wake flow environment of an airplane, a drawing test is carried out after a period of test, and the result is shown in table 2.
TABLE 1 preparation of anti-shedding agent component ratios
| Weight of material/kg | Example 1 | Example 2 | Example 3 |
| Styrene-butadiene-styrene copolymer | 21.0 | 55.0 | 78.0 |
| Ethylene-vinyl acetate copolymer | 21.0 | 35.0 | 48.0 |
| Resin composition | 51.0 | 85.0 | 100.0 |
| Nitrogen-containing aromatic compound | 21.0 | 40.0 | 58.0 |
| P-phenylenediamine compounds | 11.0 | 20.0 | 28.0 |
| Coupling agent | 1.1 | 3.0 | 3.8 |
| Hindered phenol compound | 1.1 | 3.0 | 3.8 |
| Methacrylate compound | 11.0 | 20.0 | 28.0 |
TABLE 2 asphalt Pull test results
| Adhesion Strength/psi | Example 4 | Example 5 | Example 6 | Comparative example 1 | Comparative example 2 |
| No simulation experiment was performed | 453 | 489 | 513 | 380 | 423 |
| After the simulation experiment | 478 | 510 | 531 | 308 | 433 |
As can be seen from Table 2, the addition of the anti-stripping agent of the invention to asphalt can significantly improve the adhesion strength of asphalt and the anti-stripping performance; after a period of airplane high-temperature wake flow simulation experiment, the adhesion strength of the asphalt added with the anti-stripping agent is not reduced but increased, which shows that the anti-stripping agent can improve the anti-stripping performance of the asphalt and has strong adaptability to airplane high-temperature wake flow environment. The adhesion strength of the asphalt without the anti-shedding agent is obviously reduced after a simulation experiment; after a certain commercial anti-shedding agent is added, compared with the anti-shedding agent disclosed by the invention, the improvement range of the adhesive strength is small, and after a simulation experiment, the adhesive strength is not reduced but is not basically improved.
Claims (19)
1. An anti-shedding agent comprises the following raw materials in parts by weight:
2 to 9 parts of styrene-butadiene-styrene copolymer,
2 to 6 parts of ethylene-vinyl acetate copolymer,
5 to 12 parts of resin, namely adding the resin,
2 to 7 parts of nitrogen-containing aromatic compound,
1 to 4 parts of p-phenylenediamine compounds,
0.1 to 0.5 part of a coupling agent,
0.1 to 0.5 portion of hindered phenol compound,
1 to 4 parts of methacrylate compounds.
2. The anti-shedding agent according to claim 1, wherein: the composite material comprises the following raw materials in parts by mass:
3 to 8 parts of styrene-butadiene-styrene copolymer,
2 to 5 parts of ethylene-vinyl acetate copolymer,
6 to 11 parts of resin,
2 to 6 parts of nitrogen-containing aromatic compound,
1 to 3 parts of p-phenylenediamine compounds,
0.2 to 0.4 portion of coupling agent,
0.2 to 0.4 portion of hindered phenol compounds,
1 to 3 parts of methacrylate compounds.
3. The anti-shedding agent according to claim 1 or 2, wherein: the styrene-butadiene-styrene copolymer is linear or star-shaped, and the average relative molecular mass is 10-26 ten thousand.
4. The anti-shedding agent according to claim 1 or 2, wherein: in the ethylene-vinyl acetate copolymer, the mass content of the combined vinyl acetate is 21-26 wt%.
5. The anti-shedding agent according to claim 1 or 2, wherein: the resin is one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin and polyamide resin.
6. The anti-shedding agent according to claim 1 or 2, wherein: the nitrogen-containing aromatic compound is at least one selected from quaternary pyridinium salt and diaminopyrimidine hydrochloride.
7. The anti-shedding agent according to claim 6, wherein: the quaternary ammonium pyridine salt is selected from at least one of N-benzoylmethyl quaternary ammonium pyridine salt, O- (7-azabenzotriazole-1-yl) -N, N, N ', N' -tetramethylurea quaternary ammonium tetrafluoroborate, N-cyanomethyl quaternary ammonium pyridine salt, N- (2-acetylpyridyl) quaternary ammonium pyridine salt, N-acetoxy quaternary ammonium pyridine salt, N-nitrile quaternary ammonium pyridine salt, N-acetoxy quaternary ammonium pyridine salt, 2-mercaptopyridine quaternary ammonium salt, N- (2-methylpropenyl) quaternary ammonium pyridine salt and brominated N-benzoylmethyl quaternary ammonium pyridine salt; the diaminopyrimidine hydrochloride is at least one selected from the group consisting of 2, 5-diamino-4, 6-dihydroxypyrimidine hydrochloride, 4, 5-diamino-2, 6-dihydroxypyrimidine hydrochloride, and 2, 4-diaminopyrimidin-5-ol dihydrochloride.
8. The anti-shedding agent according to claim 1 or 2, wherein: the p-phenylenediamine compound is one or more of N, N ' -diphenyl-p-phenylenediamine, N-cyclohexyl-N ' -phenyl-p-phenylenediamine and N-phenyl-N ' -isopropyl-p-phenylenediamine.
9. The anti-shedding agent according to claim 1 or 2, wherein the coupling agent is one or more of a silane coupling agent, an aluminate coupling agent, and a titanate coupling agent.
10. The anti-shedding agent according to claim 1 or 2, wherein the hindered phenol compound comprises one or more of 2, 8-di-t-butyl-4-methylphenol, pentaerythritol tetrakis- [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], octadecyl- β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, and 1,3,5- (3, 5-di-t-butyl-4-hydroxyphenyl) s-triazine-2, 4,6 (1h, 3h, 5h) trione.
11. The anti-shedding agent according to claim 1 or 2, wherein: the methacrylate compound is one or a mixture of 2-hydroxyethyl methacrylate, 2-ethylhexyl methacrylate and ethyl methacrylate.
12. The anti-shedding agent according to claim 1 or 2, wherein: the anti-shedding agent is granular.
13. A method of preparing an anti-shedding agent according to any one of claims 1 to 12, comprising:
the anti-falling agent is prepared by uniformly mixing styrene-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, resin, nitrogen-containing aromatic compound, p-phenylenediamine compound, coupling agent, hindered phenol compound and methacrylate compound, and then mixing and granulating.
14. The method of claim 13, wherein: the mixing conditions were as follows: the mixing temperature is 140-160 ℃, and the mixing time is 40-80min; and/or the granulation adopts extrusion granulation, and the extrusion granulation temperature is 140-160 ℃.
15. A pitch resistant to stripping comprising: petroleum asphalt and an anti-stripping agent as claimed in any one of claims 1 to 12.
16. The pitch of claim 15, wherein: in the anti-stripping asphalt, the dosage of the anti-stripping agent accounts for 2-3% of the mass of the anti-stripping asphalt.
17. A process for producing the anti-drop asphalt of claim 15 or 16, comprising: heating and melting petroleum asphalt, adding the anti-shedding agent, stirring until the mixture is uniformly mixed, and then developing to obtain the anti-shedding asphalt.
18. The method of claim 17, wherein: heating and melting the petroleum asphalt at the temperature of 140-160 ℃, stirring at the temperature of 140-160 ℃, and stirring for 40-80min; the development temperature is 140-160 ℃, and the development time is 4-8 hours.
19. Use of an anti-shedding agent according to any one of claims 1 to 12 or an anti-shedding asphalt according to any one of claims 15 to 16 in an airport runway.
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