CN114479218B - Stripping-resistant agent and preparation method and application thereof - Google Patents
Stripping-resistant agent and preparation method and application thereof Download PDFInfo
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- CN114479218B CN114479218B CN202011165257.4A CN202011165257A CN114479218B CN 114479218 B CN114479218 B CN 114479218B CN 202011165257 A CN202011165257 A CN 202011165257A CN 114479218 B CN114479218 B CN 114479218B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000010426 asphalt Substances 0.000 claims abstract description 106
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 55
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 22
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- QORUGOXNWQUALA-UHFFFAOYSA-N N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 Chemical compound N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 QORUGOXNWQUALA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010692 aromatic oil Substances 0.000 claims abstract description 8
- 235000011837 pasties Nutrition 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 150000004989 p-phenylenediamines Chemical class 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 18
- 239000003208 petroleum Substances 0.000 claims description 15
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 13
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 8
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- -1 p-phenylenediamine compound Chemical class 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000004523 catalytic cracking Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- UTGQNNCQYDRXCH-UHFFFAOYSA-N N,N'-diphenyl-1,4-phenylenediamine Chemical compound C=1C=C(NC=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 UTGQNNCQYDRXCH-UHFFFAOYSA-N 0.000 claims description 3
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 13
- 239000002174 Styrene-butadiene Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 238000007664 blowing Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011384 asphalt concrete Substances 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research 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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses an anti-stripping agent, a preparation method and application thereof. The stripping-resistant agent comprises the following raw materials: styrene butadiene rubber, triphenylmethane triisocyanate, p-phenylenediamine compounds, coupling agents and aromatic oil. The preparation method comprises the following steps: and uniformly mixing the materials, and mixing and extruding to obtain the stripping resistant agent. The asphalt stripping-resistant agent is pasty, does not need to be cured in the use process, shortens the production time of the stripping-resistant asphalt, and improves the working efficiency. The stripping-resistant agent is used in airport asphalt, can obviously improve the adhesion strength of asphalt, improves the stripping-resistant performance, and has stronger adaptability to the environment of aircraft height Wen Weiliu.
Description
Technical Field
The invention belongs to the petroleum industry and the basic material chemistry field, in particular to an asphalt stripping-resistant agent and a preparation method thereof, which are particularly suitable for an airport asphalt runway.
Background
The highest temperature of air flow sprayed by a modern jet plane engine can reach 850-900 ℃, the air flow speed can reach 180m/s, the air flow is diffused to an airport runway surface in an oval shape, the surface temperature of the runway surface is rapidly increased, and asphalt runway surface damage is caused. The measured data show that when the summer air temperature is 40 ℃, the highest temperature of the asphalt pavement reaches 140 ℃ under the influence of the aircraft height Wen Weiliu. Therefore, in order to avoid the damage of the runway surface, the end parts of the civil airport runway are provided with the anti-blowing flats, and enough preparation time is provided for the airplane in the take-off stage. However, the stage of aircraft running still inevitably causes the temperature of the runway surface to rise suddenly, and the temperature stress is generated to cause the damage of the runway surface, thereby affecting the durability of the runway. The main damage form is that under the blowing of high-temperature air flow sprayed by a jet aircraft, coarse aggregate on the surface of an asphalt runway is extremely easy to peel off, foreign invaders (FOD) are formed, and the FOD can cause serious flight accidents once being sucked into an aircraft engine. Therefore, the high-temperature stripping resistance of the coarse aggregate of the asphalt concrete runway is improved, and the method is an important research direction for improving the civil aviation operation safety.
At present, polymer modified asphalt with better high-temperature performance is widely adopted for paving airport runways worldwide, so that the problems of pavement deformation and threshing under the conditions of aircraft wake baking and high shear stress are solved, but the effect is not ideal, and after a period of use, pavement bulge cracking and aggregate stripping frequently occur, so that huge flight potential safety hazards and high maintenance cost are increased. At present, aiming at the aggregate stripping problem of expressways or common roads, mainly aiming at the water damage resistance, a method for adding an anti-stripping agent into asphalt or asphalt mixture is proposed, but the temperature, the tail gas flow, the air flow speed and the like of automobile tail gas on the roads are greatly different from those of the tail gas of jet aircrafts. Therefore, the aim of adding the stripping-resistant agent on the highway is mainly considered to be water damage resistance and prevent aggregate stripping when asphalt concrete is affected by water; the main consideration on the runway is the purging effect of the jet aircraft with high Wen Weiliu, high temperature (850-900 ℃), large air flow and high air flow speed (180 m/s). There is no anti-stripping agent developed specifically for the problem of asphalt concrete aggregate stripping of airport runways due to the influence of jet aircraft altitude Wen Weiliu.
Disclosure of Invention
The invention provides an anti-stripping agent which is particularly suitable for an airport asphalt runway, and a preparation method and application thereof. When the stripping-resistant agent is used for an airport asphalt runway, the stripping resistance of asphalt can be obviously improved.
The invention provides an anti-stripping agent which comprises the following raw materials in parts by mass:
2-13 parts of styrene-butadiene rubber,
2-8 parts of triphenylmethane triisocyanate,
2-7 parts of p-phenylenediamine compound,
1-6 parts of a coupling agent,
3-25 parts of aromatic oil.
The stripping-resistant agent of the invention preferably comprises the following raw materials in parts by mass:
3-11 parts of styrene-butadiene rubber,
3-7 parts of triphenylmethane triisocyanate,
3-6 parts of p-phenylenediamine compound,
2-5 parts of a coupling agent,
4-23 parts of aromatic oil.
Further, in the styrene-butadiene rubber, the content of the bound styrene is 23-45 wt%, preferably 33-38 wt%. The styrene-butadiene rubber preferably has a particle size of not more than 20mm, and generally 5-19 mm.
Further, 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.
Further, the coupling agent is one or more of silane coupling agent (KH 550 or KH560 or KH 570), aluminate coupling agent and titanate coupling agent.
Further, the aromatic hydrocarbon oil is an aromatic hydrocarbon-rich component, wherein the aromatic hydrocarbon content is more than 70% by mass fraction, and the aromatic hydrocarbon oil can be one or a mixture of more than one of four-line reduction extraction oil, furfural refined extraction oil, phenol refined extraction oil or catalytic cracking slurry oil.
Further, the anti-stripping agent of the invention is a paste.
The second aspect of the present invention provides a method for preparing the above-mentioned anti-peeling agent, comprising:
styrene-butadiene rubber, triphenylmethane triisocyanate, p-phenylenediamine compounds, coupling agents and aromatic oil are uniformly mixed, and the pasty anti-stripping agent is obtained after mixing and extrusion.
Further, the mixing is carried out by a conventional mixing device such as a kneader. The extrusion is accomplished using conventional extrusion equipment, such as a screw extruder.
Further, the kneading conditions were as follows: the mixing temperature is 130-160 ℃, and the mixing time is 60-90 min; extrusion conditions were as follows: the extrusion temperature is 110-140 ℃.
In a third aspect the present invention provides an airport runway anti-stripping asphalt comprising: petroleum asphalt and the anti-stripping agent.
Further, in the anti-stripping asphalt, the dosage of the anti-stripping agent accounts for 2% -3% of the mass of the anti-stripping asphalt.
Further, in the anti-stripping asphalt, the petroleum asphalt may be conventional petroleum asphalt for airport runway, and may be at least one of straight asphalt, oxidized asphalt, blended asphalt, solvent deoiled asphalt, and polymer modified asphalt.
The fourth aspect of the invention provides a method for preparing the anti-stripping asphalt, which comprises the following steps: heating and melting petroleum asphalt, adding the stripping-resistant agent, and uniformly mixing to obtain the stripping-resistant asphalt.
Further, in the preparation method of the anti-stripping asphalt, the heating and melting temperature of the petroleum asphalt is 140-180 ℃. The mixing can be carried out by stirring, the mixing temperature is 120-160 ℃, and the mixing time can be 60-90 min.
The stripping-resistant agent is particularly suitable for application in airfield runway asphalt.
The stripping-resistant asphalt provided by the invention is suitable for application in airfield runway asphalt.
The invention has the following advantages:
1. the stripping-resistant agent not only can remarkably improve the stripping resistance of asphalt, but also has strong adaptability to the high Wen Weiliu environment of an airplane, can improve the stripping resistance of an airport asphalt runway, reduce the stripping of aggregate, and can reduce the occurrence rate of flight accidents.
2. The stripping-resistant agent is pasty at normal temperature, and the process of preparing the stripping-resistant asphalt by using the stripping-resistant agent does not need to preserve health, shortens the production time of the stripping-resistant asphalt, improves the working efficiency, can further improve the adhesion strength of the asphalt, can also improve the low-temperature extensibility of the asphalt, and avoids the occurrence of frost cracking of a pavement in winter.
3. In the preparation method of the stripping-resistant agent, styrene-butadiene rubber, triphenylmethane triisocyanate and p-phenylenediamine compounds are fused in a kneader and in the screw extrusion process under the action of a coupling agent, so that the formed product has higher viscosity and flexibility, and also has good polarity and ageing resistance, so that the stripping-resistant agent can lead asphalt to have good high-temperature stripping resistance in a high-temperature environment; under the action of aromatic hydrocarbon oil, the components are easier to fuse, the reaction condition is reduced, and the energy is saved.
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 invention, the weight percent is the mass fraction.
In the invention, the simulation experiment method of the aircraft height Wen Weiliu comprises the following steps: with aircraft engines (such as newer engines), the tail links a straight barrel of high temperature resistant material with heating. During the experiment, the asphalt to be tested is melted and then placed in a metal tray, and the asphalt is spread flatly to form a film with the thickness of 3mm plus or minus 0.3 mm. The tray with the asphalt film is arranged at the bottom in the cylinder body and is firmly fixed. The bottom of the cylinder body has a heating function, so that the temperature of asphalt in the tray is maintained at 60+/-20 ℃ (the temperature of Wen Shilu table in summer simulation). The engine is started, so that high-temperature tail gas of the engine enters from one end of the straight cylinder, the other end of the straight cylinder is discharged, the high-temperature tail gas is blown over the asphalt membrane, the blowing is continued for 30 minutes, and the blowing is stopped for 10 minutes, so that the process is continuously repeated for a plurality of times. One experimental period was 240 hours from the initial start of blowing. And then taking out the asphalt, analyzing each performance, and comparing the performance with the performance before the simulation experiment. The method simulates the condition of asphalt on an airport runway (especially in a take-off section) when the asphalt is purged by high-temperature tail gas of an airplane for a long time, and examines the change of asphalt properties, especially the change of stripping resistance.
In the invention, the asphalt adhesion strength is obtained by testing with a drawing tester. The instrument and the test method are as follows:
instrument and equipment: drawing tester with model PosiTest AT-A, tester parameters: a draw rate of 150psi/s; test range 0-2000psi; the test method is as follows:
weighing asphalt with the mass of 0.03g on the experimental surface of the spindle; placing the spindle with asphalt on an electric heating plate, after asphalt is melted, uniformly smearing the asphalt within 10 seconds, simultaneously rapidly transferring the preheated white steel plate to a horizontal operation table, buckling the spindle coated with the uniform asphalt on the white steel plate, standing and cooling to room temperature (about 1 h). The liquid asphalt spreads evenly under the action of spindle gravity, and after cooling, the spindle and the white steel plate are bonded, and the thickness of the asphalt film is about 0.1mm. The white steel plate cooled to room temperature and the spindle were put in an environmental box (temperature: 20 ℃ C.; relative humidity: 50 Rh%) and kept AT constant temperature for 1 hour, and then taken out, and the adhesion was measured using a Positest AT-A tester. The drawing strength value at the time of separating the spindle from the metal plate was recorded. The value is used for representing the stripping resistance of asphalt, and the greater the value is, the better the stripping resistance is.
Example 1
SBR with the combined styrene content of 23 weight percent is crushed in advance, and the particle size is 5-19 mm for standby. The kneader is heated for use.
Weighing 2.0kg of crushed SBR, 2.0kg of triphenylmethane triisocyanate, 2.0kg of N, N' -diphenyl-p-phenylenediamine, 1.0kg of silane coupling agent (KH 560) and 3.0kg of reduced four-wire extraction oil, and putting into a kneader for mixing at 130 ℃ for 60min; then extruding, wherein the extruding temperature is 110 ℃, and obtaining the pasty anti-stripping agent. The proportions of the components are shown in Table 1.
Example 2
SBR with the styrene content of 45wt% is crushed in advance, and the particle size is 5-15 mm for standby. The kneader is heated for use.
13.0kg of crushed SBR, 8.0kg of triphenylmethane triisocyanate, 7.0kg of N-cyclohexyl-N' -phenyl-p-phenylenediamine and 6.0kg of aluminate coupling agent are weighed and placed in a kneader for mixing, furfural refining extract oil is added while mixing, 5.0kg is added every 5 minutes until the addition amount reaches 25.0kg, mixing is continued, the mixing temperature is 160 ℃, and the mixing time is 90 minutes after the complete addition of 25.0kg of furfural refining extract oil; then extruding, wherein the extrusion temperature is 140 ℃. After extrusion, a viscous paste is formed, and the stripping-resistant agent is obtained. The proportions of the components are shown in Table 1.
Example 3
SBR with the combined styrene content of 34 weight percent is crushed in advance, and the particle size is 5-16 mm for standby. The kneader is heated for use.
Weighing 3.2kg of crushed SBR, 3.2kg of triphenylmethane triisocyanate, 3.2kg of N-phenyl-N' -isopropyl-p-phenylenediamine and 2.2 kg of silane coupling agent (KH 570) and putting the materials into a kneader for mixing, adding catalytic cracking slurry while mixing, adding 2.4kg every 5 minutes, continuing mixing until the addition amount of the catalytic cracking slurry reaches 4.8kg, wherein the mixing temperature is 135 ℃, and the mixing time is 65 minutes after the catalytic cracking slurry of 4.8kg is completely added; then extruding, wherein the extruding temperature is 115 ℃, and the pasty stripping inhibitor is obtained. The proportions of the components are shown in Table 1.
Example 4
SBR with the styrene content of 37 weight percent is crushed in advance, and the particle size is 5-17 mm for standby. The kneader is heated for use.
Weighing 10.5kg of crushed SBR, 6.8kg of triphenylmethane triisocyanate, 6.8kg of N-cyclohexyl-N' -phenyl-p-phenylenediamine and 4.7 kg of titanate coupling agent, putting the materials into a kneader for mixing, adding phenol refined extract oil while mixing, adding 2.0kg every 5 minutes until the adding amount reaches 22.0kg, continuing mixing at 155 ℃, wherein the mixing time is 85min after the phenol refined extract oil of 22.0kg is completely added; then extruding, wherein the extrusion temperature is 135 ℃. After extrusion, a viscous paste is formed, and the stripping-resistant agent is obtained. The proportions of the components are shown in Table 1.
Example 5
The anti-stripping agent obtained in example 1 was added to a molten petroleum asphalt (Qilu 70) produced by Qilu petrochemical company and having a penetration of 70dmm at 25 ℃,: the weight ratio of the stripping resistant agent is 97:3. stirring at constant temperature of 160deg.C for 60min to obtain anti-stripping asphalt.
The adhesion strength of the anti-stripping asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-stripping asphalt was subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, a drawing experiment was performed, and the results are shown in Table 2.
Example 6
The anti-stripping agent obtained in example 2 was added to a molten petroleum asphalt (Qilu 70) produced by Qilu petrochemical company and having a penetration of 70dmm at 25 ℃,: the weight ratio of the stripping resistant agent is 98:2. stirring at constant temperature of 120deg.C for 90min to obtain anti-stripping asphalt.
The adhesion strength of the anti-stripping asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-stripping asphalt was subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, a drawing experiment was performed, and the results are shown in Table 2.
Example 7
The anti-stripping agent obtained in example 3 was added to a molten petroleum asphalt (Qilu 70) produced by Qilu petrochemical company and having a penetration of 70dmm at 25 ℃,: the weight ratio of the stripping resistant agent is 97:3. stirring at constant temperature of 155 ℃ for 65min to obtain the anti-stripping asphalt.
The adhesion strength of the anti-stripping asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-stripping asphalt was subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, a drawing experiment was performed, and the results are shown in Table 2.
Example 8
The anti-stripping agent obtained in example 4 was added to petroleum asphalt (Qilu 70) with a penetration of 70dmm at 25℃produced by Qilu petrochemical company: the weight ratio of the stripping resistant agent is 98:2. stirring at constant temperature, wherein the constant temperature is 125 ℃, and the stirring time is 85min, so as to obtain the anti-stripping asphalt.
The adhesion strength of the anti-stripping asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-stripping asphalt was subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, a drawing experiment was performed, and the results are shown in Table 2.
Comparative example 1
For comparison, the adhesion strength of the 70A asphalt (Qilu 70) produced by Qilu petrochemical company, as measured by a tensile tester, is also shown in Table 2; and 70A-grade asphalt (Qilu 70) produced by Qilu petrochemical company is subjected to simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, drawing experiments are respectively carried out, and the results are shown in Table 2.
Comparative example 2
For comparison, a commercial pasty liquid anti-stripping agent PAVE192 manufactured by intel vite corporation was added to a molten petroleum asphalt (zilu 70) manufactured by zilupetrifaction corporation having a penetration of 70dmm at 25 ℃,: the weight ratio of the stripping resistant agent is 97:3. stirring at constant temperature of 160deg.C for 60min to obtain anti-stripping asphalt.
The adhesion strength of the anti-stripping asphalt was measured by a pull tester, and the results are shown in Table 2. The anti-stripping asphalt was subjected to a simulation experiment under the environment of aircraft height Wen Weiliu, and after one period of experiment, a drawing experiment was performed, and the results are shown in Table 2.
Table 1 raw material ratio for preparing anti-stripping agent
| Weight of material/kg | Example 1 | Example 2 | Example 3 | Example 4 |
| Styrene-butadiene rubber | 2.0 | 13.0 | 3.2 | 10.5 |
| Triphenylmethane triisocyanate | 2.0 | 8.0 | 3.2 | 6.8 |
| P-phenylenediamine compounds | 2.0 | 7.0 | 3.2 | 6.8 |
| Coupling agent | 1.0 | 6.0 | 2.2 | 4.7 |
| Aromatic oil | 3.0 | 25.0 | 4.8 | 22.0 |
Table 2 asphalt drawing test results
| Adhesion strength/psi | Example 5 | Example 6 | Example 7 | Example 8 | Comparative example 1 | Comparative example 2 |
| No simulation experiments were performed | 446 | 449 | 537 | 578 | 380 | 438 |
| After simulation experiment | 501 | 500 | 605 | 619 | 308 | 313 |
As can be seen from table 2, the addition of the stripping-resistant agent of the invention to asphalt can significantly improve the adhesion strength and stripping resistance of asphalt; after a period of aircraft height Wen Weiliu simulation experiment, the adhesion strength of the asphalt added with the anti-stripping agent is not reduced, but is increased; and asphalt without the stripping resistance agent has obviously reduced adhesion strength after simulation experiments. When a commercial stripping inhibitor was added, the extent of improvement in the adhesion strength was substantially equivalent to that of the stripping inhibitor of the present invention, but the adhesion strength was significantly reduced after the simulation test. The stripping-resistant agent disclosed by the invention not only can improve the stripping resistance of asphalt, but also has strong adaptability to the environment of aircraft height Wen Weiliu.
Claims (17)
1. The stripping-resistant agent comprises the following raw materials in parts by mass:
2-13 parts of styrene-butadiene rubber,
2-8 parts of triphenylmethane triisocyanate,
2-7 parts of p-phenylenediamine compound,
1-6 parts of a coupling agent,
3-25 parts of aromatic oil;
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.
2. The stripping-resistant agent as claimed in claim 1, which comprises the following raw materials in parts by mass:
3-11 parts of styrene-butadiene rubber,
3-7 parts of triphenylmethane triisocyanate,
3-6 parts of p-phenylenediamine compound,
2-5 parts of a coupling agent,
4-23 parts of aromatic oil.
3. The stripping resist according to claim 1, wherein the styrene-butadiene rubber has a bound styrene content of 23 wt.% to 45 wt.%.
4. The stripping resist as claimed in claim 3, wherein the styrene-butadiene rubber has a bound styrene content of 33 to 38% by weight.
5. The stripping resist as claimed in claim 3, wherein the particle size of the styrene-butadiene rubber is not more than 20mm.
6. The release-resistant agent according to claim 1, wherein the coupling agent is one or more of a silane coupling agent, an aluminate coupling agent, and a titanate coupling agent.
7. The stripping resist as claimed in claim 1, wherein the aromatic hydrocarbon oil has an aromatic hydrocarbon content of 70% by mass or more.
8. The stripping resist according to claim 7, wherein the aromatic hydrocarbon oil is selected from one or a mixture of several of four-wire reduced extract oil, furfural refined extract oil, phenol refined extract oil and catalytic cracking slurry oil.
9. The anti-peeling agent according to claim 1, wherein the anti-peeling agent is a paste.
10. A process for the preparation of the anti-stripping agent according to any one of claims 1 to 9, comprising:
styrene-butadiene rubber, triphenylmethane triisocyanate, p-phenylenediamine compounds, coupling agents and aromatic oil are uniformly mixed, and the pasty anti-stripping agent is obtained after mixing and extrusion.
11. The method of claim 10, wherein the mixing conditions are as follows: the mixing temperature is 130-160 ℃, and the mixing time is 60-90 min; extrusion conditions were as follows: the extrusion temperature is 110-140 ℃.
12. A stripping-resistant asphalt comprising: petroleum asphalt and the anti-stripping agent as defined in any one of claims 1 to 9.
13. The anti-stripping asphalt as defined in claim 12, wherein the amount of the anti-stripping agent in the anti-stripping asphalt is 2% -3% by mass of the anti-stripping asphalt.
14. The anti-stripping asphalt as defined in claim 12, wherein said petroleum asphalt is at least one of straight asphalt, oxidized asphalt, blended asphalt, solvent deasphalted asphalt, and polymer modified asphalt.
15. A method of preparing the anti-strippable asphalt of any one of claims 12-14, comprising: heating and melting petroleum asphalt, adding the stripping-resistant agent, and uniformly mixing to obtain the stripping-resistant asphalt.
16. The method for preparing anti-stripping asphalt according to claim 15, wherein the petroleum asphalt has a heating melting temperature of 140 ℃ to 180 ℃; the mixing temperature is 120-160 ℃, and the mixing time is 60-90 min.
17. Use of the anti-stripping agent according to any one of claims 1 to 9 or the anti-stripping asphalt according to any one of claims 12 to 14 in an airport runway.
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| CN114479218A (en) | 2022-05-13 |
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