CN114479487B - 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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- CN114479487B CN114479487B CN202011165287.5A CN202011165287A CN114479487B CN 114479487 B CN114479487 B CN 114479487B CN 202011165287 A CN202011165287 A CN 202011165287A CN 114479487 B CN114479487 B CN 114479487B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000010426 asphalt Substances 0.000 claims abstract description 87
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- -1 nitrogen-containing aromatic compounds Chemical class 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 21
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- BYLSIPUARIZAHZ-UHFFFAOYSA-N 2,4,6-tris(1-phenylethyl)phenol Chemical compound C=1C(C(C)C=2C=CC=CC=2)=C(O)C(C(C)C=2C=CC=CC=2)=CC=1C(C)C1=CC=CC=C1 BYLSIPUARIZAHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000005210 alkyl ammonium group Chemical group 0.000 claims abstract description 11
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 11
- 238000005469 granulation Methods 0.000 claims abstract description 11
- 230000003179 granulation Effects 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000003208 petroleum Substances 0.000 claims description 17
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 13
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 4
- 238000011161 development Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- MVZWLBUGTZKZMN-UHFFFAOYSA-N pyrimidine-4,6-diamine;hydrochloride Chemical compound Cl.NC1=CC(N)=NC=N1 MVZWLBUGTZKZMN-UHFFFAOYSA-N 0.000 claims description 4
- IIVYOQGIZSPVFZ-UHFFFAOYSA-N 2,5-diamino-4-hydroxy-1h-pyrimidin-6-one;hydrochloride Chemical compound Cl.NC1=NC(O)=C(N)C(=O)N1 IIVYOQGIZSPVFZ-UHFFFAOYSA-N 0.000 claims description 3
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 150000003505 terpenes Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- RJCJNXXYYTWFCM-UHFFFAOYSA-N 2,4-diaminopyrimidin-5-ol dihydrochloride Chemical compound Cl.Cl.Nc1ncc(O)c(N)n1 RJCJNXXYYTWFCM-UHFFFAOYSA-N 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- VHMLWEBEDKTKOQ-UHFFFAOYSA-N 5,6-diamino-1h-pyrimidine-2,4-dione;hydrochloride Chemical compound Cl.NC=1NC(=O)NC(=O)C=1N VHMLWEBEDKTKOQ-UHFFFAOYSA-N 0.000 claims description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920006122 polyamide resin Polymers 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 238000004088 simulation Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 11
- 239000002174 Styrene-butadiene Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000011384 asphalt concrete Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- HEJOROWXIWLCMS-UHFFFAOYSA-M 2-pyridin-1-ium-1-ylacetonitrile;chloride Chemical compound [Cl-].N#CC[N+]1=CC=CC=C1 HEJOROWXIWLCMS-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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 rubber, polyethylene oxide, styrenated phenol, resin, alkyl ammonium chloride and nitrogen-containing aromatic compounds. 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 for 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 fields of petroleum industry and basic material chemistry, and particularly relates to an anti-shedding agent and a preparation method thereof, which are particularly suitable for an airport asphalt runway.
Background
The highest temperature of the air flow sprayed by the modern jet aircraft engine can reach 850-900 ℃, the air flow speed can reach 180m/s, the air flow spreads to the runway surface of an airport in an oval shape, and the surface temperature of the runway surface is rapidly increased, so that the asphalt runway surface is damaged. The measured data show that when the temperature in summer is 40 ℃, the highest temperature of the asphalt pavement surface reaches 140 ℃ due to the influence of the high-temperature wake flow of the airplane. Therefore, in order to avoid the damage of the road surface, the end parts of the runways of the civil airport are provided with the anti-blowing plateaus, and enough preparation time is provided for the airplanes in the takeoff phase. However, the runway stage still inevitably causes the temperature of the runway surface to rise suddenly, and temperature stress is generated to cause the runway surface to be damaged, thereby affecting the durability of the runway. The main damage mode is that under the sweeping of high-temperature airflow ejected by a jet plane, coarse aggregate is easy to fall off from the surface of the asphalt runway to form an external invader (FOD), and the FOD can cause serious flight accidents once being sucked into an aircraft engine. Therefore, the improvement of the high-temperature shedding resistance of the coarse aggregate of the asphalt concrete runway is an important research direction for improving the safety capability of civil aviation operation.
At present, airport runways in the world are generally paved by polymer modified asphalt with better high-temperature performance so as to solve 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 aggregates fall frequently, so that huge flight potential safety hazards and high maintenance cost are increased. At present, aiming at the problem of aggregate shedding of expressways or common highways, mainly aiming at water damage resistance, a method for adding an anti-shedding agent into asphalt or asphalt mixture is proposed, but the temperature, the tail gas flow rate, the air flow speed and the like of automobile tail gas on the highways are greatly different from those of tail gas of jet airplanes. So the main consideration for adding the anti-shedding agent on the road is the resistance to water damage and the prevention of aggregate shedding caused by the damage of asphalt concrete by water; the main consideration on the runway of the airport is the purging function of the high-temperature wake flow of the jet plane, the temperature is high (850-900 ℃), the airflow is large, and the airflow speed is fast (180 m/s). At present, no anti-shedding agent is 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.
Disclosure of Invention
Aiming at the problem of aggregate shedding faced by an airport asphalt runway, the invention provides an anti-shedding agent which is particularly suitable for the airport asphalt runway and a preparation method and application thereof. When the anti-shedding agent is used for an asphalt runway of an airport, the anti-shedding performance of asphalt can be obviously improved.
The invention provides an anti-falling agent which comprises the following raw materials in parts by weight:
1 to 7 portions of Styrene Butadiene Rubber (SBR),
1 to 6 portions of polyethylene oxide (PEO),
0.5 to 2 portions of styrenated phenol,
3 to 9 parts of resin,
1 to 5 parts of alkyl ammonium chloride,
1 to 4 parts of a nitrogen-containing aromatic compound.
The anti-shedding agent disclosed by the invention preferably comprises the following raw materials in parts by mass:
1 to 6 portions of Styrene Butadiene Rubber (SBR),
2 to 5 portions of polyethylene oxide (PEO),
0.5 to 1.8 portions of styrenated phenol,
4 to 8 parts of resin,
1 to 4 parts of alkyl ammonium chloride,
1 to 3 parts of nitrogen-containing aromatic compound.
In the styrene butadiene rubber, the content of the combined styrene is 23wt% -45 wt%, and preferably 30wt% -40 wt%. The styrene-butadiene rubber preferably has a particle size of not more than 20mm, generally 5 to 20mm.
The molecular weight of the polyethylene oxide is 7-500 ten thousand, and preferably 12-400 ten thousand.
The resin is one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin and polyamide resin.
The alkyl ammonium chloride can be one or a mixture of octadecyl trimethyl ammonium chloride (1831) and hexadecyl trimethyl ammonium chloride (1631).
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 anti-shedding agent can be granular, and the grain diameter can be 2-5mm.
The second aspect of the present invention provides a method for preparing the above anti-shedding agent, comprising:
uniformly mixing styrene butadiene rubber, polyethylene oxide, styrenated phenol, resin, alkyl ammonium chloride and a nitrogen-containing aromatic compound, mixing, and granulating to obtain the anti-dropping agent.
Furthermore, the grain diameter of SBR is not more than 20mm, and is generally 5 to 20mm.
Further, the mixing is carried out using conventional mixing devices, such as kneaders.
Further, the mixing conditions were as follows: the mixing temperature is 160-200 ℃, and the mixing time is 60-120min.
Further, the granulation is extrusion granulation, and can be realized by using a conventional extrusion granulation device, such as a screw extruder. The extrusion granulation conditions were as follows: the extrusion granulation temperature is 160-180 DEG C
Further, the anti-shedding agent prepared by the method provided by the second aspect is in a granular shape, 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 can be 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 160-200 ℃, the stirring temperature under constant temperature is 160-200 ℃, and the stirring time can be 60-90min. The development temperature is 140-160 ℃, and the development time is 12-18 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. In the preparation method of the anti-stripping agent, the nitrogen-containing aromatic compound is used as an initiator, under the assistance of polyethylene oxide, styrene-butadiene rubber, resin, the nitrogen-containing aromatic compound, the polyethylene oxide and the like are subjected to graft reaction in a kneading machine and a screw extrusion process, the formed product has high viscosity and flexibility and good polarity, and under the action of styrenated phenol, the anti-stripping agent can enable asphalt to have better high-temperature stripping resistance in a high-temperature environment. And in combination with the reason that the acid asphalt is easy to fall off, the alkyl ammonium chloride is added to change the surface acidity of stone, so that the adhesion strength between the asphalt and the stone is further enhanced. Therefore, the anti-shedding agent of the invention comprehensively strengthens the adhesion strength of asphalt to stone from multiple aspects and improves the high-temperature shedding resistance of asphalt in airports.
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; the test range is 0-2000psi; the test method is as follows:
weighing 0.03g of asphalt on an experimental surface of a spindle; placing the spindle attached 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 spindle coated with the asphalt uniformly 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 constant temperature for 1 hour, and the adhesiveness was tested using a Positest AT-A tester. The value of the pull strength at the moment of separation of the spindle from the metal sheet is recorded. 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
The SBR with the bound styrene content of 31wt% is crushed in advance, and the grain diameter is 5 to 18mm for standby. The kneader is heated for future use.
Weighing 12kg of crushed SBR, 21kg of polyethylene oxide with the molecular weight of 13 ten thousand, 6 kg of styrenated phenol, 45 kg of petroleum resin (C5), 12kg of octadecyl trimethyl ammonium chloride and 11kg of N- (2-acetylpyridyl) pyridine quaternary ammonium salt, and placing the materials in a kneader for mixing at the mixing temperature of 165 ℃ for 65min; then, extrusion granulation was carried out at an extrusion temperature of 165 ℃. 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 2
SBR with the bound styrene content of 43wt% is crushed in advance, and the grain diameter is 5-19mm for later use. The kneader is heated until ready for use.
Weighing 70kg of pulverized SBR, 60kg of polyethylene oxide with the molecular weight of 480 ten thousand, 20 kg of styrenated phenol, 90 kg of terpene resin, 50 kg of hexadecyl trimethyl ammonium chloride and 40 kg of N-acetoxy pyridine quaternary ammonium salt, and placing the materials into a kneader for mixing, wherein the mixing temperature is 200 ℃, and the mixing time is 120min; then extruding and granulating, wherein the extrusion temperature is 180 ℃. Cutting into 3mm granule to obtain the anti-shedding agent. The distribution ratio of each component is shown in table 1.
Example 3
The SBR with the bound styrene content of 39wt% is crushed in advance, and the particle size is 5-17mm for later use. The kneader is heated for future use.
Weighing 58kg of crushed SBR, 48kg of polyethylene oxide with the molecular weight of 390 ten thousand, 17 kg of styrenated phenol, 78 kg of polyester resin, 38 kg of octadecyl trimethyl ammonium chloride and 29 kg of 2, 5-diamino-4, 6-dihydroxypyrimidine hydrochloride, and placing the materials in a kneader for mixing at the mixing temperature of 190 ℃ for 110min; then, extrusion granulation was carried out at an extrusion temperature of 175 ℃. Cutting into 4mm granule 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 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 97:3. stirring at constant temperature of 165 deg.C for 65min, and developing at constant temperature of 145 deg.C for 13 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.
Example 5
The anti-shedding agent obtained in example 2 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 97.5:2.5. stirring at constant temperature of 200 deg.C for 90min, and developing at constant temperature of 160 deg.C for 18 hr to obtain anti-drop 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-dropping asphalt is subjected to a simulation experiment under the high-temperature wake environment of an airplane, and 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-shedding agent is 98:2. stirring at constant temperature of 195 deg.C for 85 min, and developing at constant temperature of 155 deg.C for 17 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 grade 70A bitumen (zilu 70) produced by zilu petrochemical company is also listed in table 2; 70A-grade asphalt (Qilu 70) produced by Qilu petrochemical company is also subjected to a simulation experiment in the high-temperature wake environment of the airplane, and after a period of experiment, drawing experiments are respectively carried out, and the results are shown in Table 2.
Comparative example 2
For comparison, a commercial 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 200 deg.C for 90min, and developing at constant temperature of 160 deg.C for 18 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-dropping asphalt is subjected to a simulation experiment under the high-temperature wake environment of an airplane, and 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 rubber | 12 | 70 | 58 |
| Polyethylene oxide | 21 | 60 | 48 |
| Styrenated phenols | 6 | 20 | 17 |
| Resin composition | 45 | 90 | 78 |
| Alkyl ammonium chloride | 12 | 50 | 38 |
| Aromatic compound containing nitrogen | 11 | 40 | 29 |
TABLE 2 Pitch Pull test results
| Adhesion Strength/psi | Example 4 | Example 5 | Example 6 | Comparative example 1 | Comparative example 2 |
| No simulation experiment was performed | 546 | 497 | 597 | 380 | 420 |
| After the simulation experiment | 615 | 530 | 685 | 308 | 430 |
As can be seen from Table 2, the addition of the anti-dropping agent of the present invention to asphalt can significantly improve the adhesion strength of asphalt and improve the anti-dropping property; after a period of airplane high-temperature wake flow simulation experiment, the adhesion strength of the asphalt added with the anti-shedding agent is not reduced, but is increased; the adhesion strength of the asphalt without the anti-shedding agent is obviously reduced after a simulation experiment; after a certain commercially available anti-shedding agent is added, the improvement range of the adhesive strength is smaller than that of the anti-shedding agent disclosed by the invention, and after a simulation experiment, the adhesive strength is not reduced but is not basically improved. The anti-stripping agent disclosed by the invention can improve the anti-stripping performance of asphalt and has strong adaptability to the high-temperature wake environment of an airplane.
Claims (17)
1. An anti-shedding agent comprises the following raw materials in parts by weight:
1 to 7 parts of styrene-butadiene rubber,
1 to 6 parts of polyethylene oxide,
0.5 to 2 portions of styrenated phenol,
3 to 9 parts of resin, namely adding the resin,
1 to 5 parts of alkyl ammonium chloride,
1 to 4 parts of a nitrogen-containing aromatic compound;
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.
2. The anti-shedding agent according to claim 1, wherein: the composite material comprises the following raw materials in parts by mass:
1 to 6 parts of styrene-butadiene rubber,
2 to 5 parts of polyethylene oxide,
0.5 to 1.8 portions of styrenated phenol,
4 to 8 parts of resin, namely adding the resin,
1 to 4 parts of alkyl ammonium chloride,
1 to 3 parts of nitrogen-containing aromatic compound.
3. The anti-shedding agent according to claim 1 or 2, wherein: in the styrene butadiene rubber, the content of the combined styrene is 23wt% -45 wt%.
4. The anti-shedding agent according to claim 1 or 2, wherein: the styrene butadiene rubber contains 30-40 wt% of bound styrene.
5. The anti-shedding agent according to claim 1 or 2, wherein: the particle size of the styrene butadiene rubber is not more than 20mm.
6. The anti-shedding agent according to claim 1 or 2, wherein: the molecular weight of the polyethylene oxide is 7-500 ten thousand.
7. The anti-shedding agent according to claim 1 or 2, wherein: the molecular weight of the polyethylene oxide is 12-400 ten thousand.
8. The anti-shedding agent according to claim 1 or 2, wherein: the alkyl ammonium chloride is one or a mixture of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride.
9. The anti-shedding agent according to claim 1, 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.
10. The anti-shedding agent according to claim 1 or 2, wherein: the anti-shedding agent is granular.
11. A process for the preparation of an anti-shedding agent according to any of claims 1 to 10, which comprises:
uniformly mixing styrene butadiene rubber, polyethylene oxide, styrenated phenol, resin, alkyl ammonium chloride and a nitrogen-containing aromatic compound, mixing, and granulating to obtain the anti-dropping agent.
12. The method of claim 11, wherein: the mixing conditions were as follows: the mixing temperature is 160-200 ℃, and the mixing time is 60-120min; and/or, the granulation adopts extrusion granulation, and the extrusion granulation temperature is 160-180 ℃.
13. A pitch resistant to stripping comprising: petroleum asphalt and an anti-stripping agent as claimed in any one of claims 1 to 10.
14. The pitch of claim 13, 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.
15. A process for producing the anti-drop asphalt of claim 13 or 14, 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.
16. The method of claim 15, wherein: heating and melting the petroleum asphalt at 160-200 ℃, stirring at 160-200 ℃, and stirring for 60-90min; the development temperature is 140-160 ℃, and the development time is 12-18 hours.
17. Use of an anti-sloughing agent according to any one of claims 1-10 or an anti-sloughing pitch according to claim 13 or 14 in airfield runways.
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