CN117165033B - Epoxy asphalt modified material for asphalt pavement repair - Google Patents
Epoxy asphalt modified material for asphalt pavement repair Download PDFInfo
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- CN117165033B CN117165033B CN202311156757.5A CN202311156757A CN117165033B CN 117165033 B CN117165033 B CN 117165033B CN 202311156757 A CN202311156757 A CN 202311156757A CN 117165033 B CN117165033 B CN 117165033B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 78
- 239000004593 Epoxy Substances 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 title claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000003822 epoxy resin Substances 0.000 claims abstract description 18
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 18
- 239000011258 core-shell material Substances 0.000 claims abstract description 15
- 239000004814 polyurethane Substances 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 15
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 claims abstract description 12
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 8
- LVFRCHIUUKWBLR-UHFFFAOYSA-N 4,6-dimethoxypyrimidin-2-amine Chemical compound COC1=CC(OC)=NC(N)=N1 LVFRCHIUUKWBLR-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- ZYEDGEXYGKWJPB-UHFFFAOYSA-N 4-[2-(4-aminophenyl)propan-2-yl]aniline Chemical compound C=1C=C(N)C=CC=1C(C)(C)C1=CC=C(N)C=C1 ZYEDGEXYGKWJPB-UHFFFAOYSA-N 0.000 claims description 8
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 7
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229920001690 polydopamine Polymers 0.000 claims description 5
- -1 alcohol compound Chemical class 0.000 claims description 4
- HTZCNXWZYVXIMZ-UHFFFAOYSA-M benzyl(triethyl)azanium;chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC1=CC=CC=C1 HTZCNXWZYVXIMZ-UHFFFAOYSA-M 0.000 claims description 4
- 125000005442 diisocyanate group Chemical group 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 3
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- BKCCAYLNRIRKDJ-UHFFFAOYSA-N 2-phenyl-4,5-dihydro-1h-imidazole Chemical compound N1CCN=C1C1=CC=CC=C1 BKCCAYLNRIRKDJ-UHFFFAOYSA-N 0.000 claims description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 2
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims description 2
- CHQVQXZFZHACQQ-UHFFFAOYSA-M benzyl(triethyl)azanium;bromide Chemical compound [Br-].CC[N+](CC)(CC)CC1=CC=CC=C1 CHQVQXZFZHACQQ-UHFFFAOYSA-M 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 2
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 claims description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 2
- 239000012974 tin catalyst Substances 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000008055 phosphate buffer solution Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- OAPDPORYXWQVJE-UHFFFAOYSA-N 4-propylaniline Chemical compound CCCC1=CC=C(N)C=C1 OAPDPORYXWQVJE-UHFFFAOYSA-N 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000008363 phosphate buffer Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Epoxy Resins (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the technical field of pavement repair, in particular to an epoxy asphalt modified material for asphalt pavement repair, which comprises the following components in parts by weight: 40-60 parts of epoxy resin, 20-30 parts of polyurethane, 5-10 parts of hydroxyl-terminated polybutadiene acrylonitrile, 5-10 parts of epoxidized hydroxyl-terminated liquid polybutadiene, 0.1-1 part of modifier, 50-100 parts of hard asphalt core-shell particles, 20-30 parts of curing agent and 0.1-0.5 part of curing accelerator.
Description
Technical Field
The invention relates to the technical field of corrosion and scale inhibition, in particular to an epoxy asphalt modified material for asphalt pavement repair.
Background
The epoxy asphalt is composed of matrix asphalt, epoxy resin and a curing agent, wherein the epoxy resin is used as a modifying agent, and under the action of the curing agent, the epoxy resin is subjected to ring-opening reaction in the mixing process to form a space network structure, and the matrix asphalt is wrapped in the space network structure; the epoxy resin is reacted with the curing agent to appear as a continuous phase, and the formed continuous crosslinked network is capable of constraining the asphalt particles. Based on the characteristics of phase composition, the epoxy asphalt can not generate melting deformation even in a high-temperature environment, and has better temperature adaptability, interlayer bonding property and fatigue resistance compared with common asphalt, so that the epoxy asphalt material is often used for pavement repair.
However, epoxy asphalt has the defect of poor mechanical properties at low temperature, and is easy to form rutting diseases and fatigue cracks. This directly affects the road surface repair effect and the driving safety.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides an epoxy asphalt modified material for asphalt pavement repair.
The technical scheme adopted is as follows:
the epoxy asphalt modified material for asphalt pavement repair comprises the following components in parts by weight:
40-60 parts of epoxy resin, 20-30 parts of polyurethane, 5-10 parts of hydroxyl-terminated polybutadiene acrylonitrile, 5-10 parts of epoxidized hydroxyl-terminated liquid polybutadiene, 0.1-1 part of modifier, 50-100 parts of hard asphalt core-shell particles, 20-30 parts of curing agent and 0.1-0.5 part of curing accelerator.
Further, the preparation method of the polyurethane comprises the following steps:
mixing diisocyanate and dihydric alcohol compound, heating to 80-90 deg.c for reaction for 1-3 hr, cooling to 40-50 deg.c, adding dimethylol propionic acid and organic tin catalyst, heating to 60-70 deg.c for reaction for 3-4 hr, and restoring to room temperature.
Further, the diisocyanate is any one or a combination of a plurality of toluene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate and lysine diisocyanate.
Further, the dihydric alcohol compound is polyoxypropylene glycol.
Further, the hard asphalt core-shell particles comprise a hard asphalt core and a polydopamine shell.
Further, the preparation method of the hard asphalt core-shell particles comprises the following steps:
adding the hard asphalt particles into phosphate buffer, dispersing by ultrasonic oscillation, adding dopamine hydrochloride, stirring at room temperature for reaction for 6-10h, filtering, washing the obtained solid with water, and drying.
Further, the modifier comprises 2, 2-bis (4-aminophenyl) propane and 2-amino-4, 6-dimethoxy pyrimidine, wherein the weight ratio of the 2, 2-bis (4-aminophenyl) propane to the 2-amino-4, 6-dimethoxy pyrimidine is 1-5:1-5.
Further, the curing agent is any one or a combination of more than one of ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.
Further, the curing accelerator is any one or more of 2-methylimidazole, 2-phenylimidazoline, benzyl triethyl ammonium chloride and benzyl triethyl ammonium bromide.
Further, the preparation method of the epoxy asphalt modified material for asphalt pavement repair comprises the following steps:
mixing epoxy resin, polyurethane, hydroxyl-terminated polybutadiene acrylonitrile, epoxidized hydroxyl-terminated liquid polybutadiene, a modifier, hard asphalt core-shell particles, a curing agent and a curing accelerator, and stirring at 50-60 ℃ for 5-15 min.
The invention has the beneficial effects that:
The invention provides an epoxy asphalt modified material for asphalt pavement repair, wherein epoxy resin and polyurethane can form an interpenetrating network structure, the molecular structure of polyurethane is randomly inserted in the molecular structure of epoxy resin, two molecules are mutually entangled and can be mutually fixed, the effect forces the compatibility of two polymers to be improved, and the two polymers play a synergistic effect when being damaged by external force so as to resist the external force and improve the overall mechanical property of the material;
The hydroxyl-terminated polybutadiene acrylonitrile and the epoxidized hydroxyl-terminated liquid polybutadiene can be chemically bonded with two polymers, and the flexible chain segments can be bonded into a compact interpenetrating network structure, so that when the material is subjected to the action of external force, the material absorbs energy, deforms, inhibits crack growth, and generates microscopic phase separation in the curing process to form a compact and loose alternate two-phase network structure, thereby having positive effects on improving the mechanical properties of the epoxy asphalt modified material at low temperature;
The modifier composed of 2, 2-bis (4-aminophenyl) propane and 2-amino-4, 6-dimethoxypyrimidine has certain molecular rigidity, so that the cured epoxy asphalt modified material has higher modulus and strength, and when the epoxy asphalt modified material is subjected to external stress, the epoxy resin with a rigid molecular chain can better bear and transfer the stress, so that the mechanical property of the epoxy asphalt modified material is improved, and the polydopamine is used for coating the hard asphalt, so that compared with a maleic anhydride modification method, the compatibility of a hard asphalt phase and an epoxy resin phase is improved, and the epoxy asphalt modified material has the generation of no pungent smell and is more environment-friendly;
through tests, the epoxy asphalt modified material provided by the invention has higher mechanical strength at low temperature, and can meet the performance requirement of pavement repair.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The technology not mentioned in the present invention refers to the prior art, and unless otherwise indicated, the following examples and comparative examples are parallel tests, employing the same processing steps and parameters.
Epoxy resin E-51: the epoxy value is 0.51, and is a chemical engineering company of sunny day in the Henan province;
Polyurethane: self-making;
hydroxyl-terminated polybutadiene acrylonitrile: type II, hydroxyl number not less than 0.45mmol/g, nitrile group content 15+ -2%, zibozilong chemical Co., ltd;
epoxidized hydroxyl terminated liquid polybutadiene: type I, epoxy value 1.00-1.30mmol/g, zibozilon chemical Co., ltd;
2, 2-bis (4-aminophenyl) propane: shanghai Inset technology Co., ltd;
2-amino-4, 6-dimethoxypyrimidine: shanghai Inset technology Co., ltd;
Hard asphalt core-shell particles: self-making;
diethylenetriamine: shandong de Nuo Hongchen chemical industry Co., ltd;
2-methylimidazole: jiangsu vibration daily chemical Co., ltd.
Example 1:
the epoxy asphalt modified material for asphalt pavement repair comprises the following components in parts by weight:
Epoxy resin E-5155 parts, polyurethane 25 parts, hydroxyl-terminated polybutadiene acrylonitrile 8 parts, epoxidized hydroxyl-terminated liquid polybutadiene 5 parts, 2-bis (4-aminophenyl) propane 0.25 parts, 2-amino-4, 6-dimethoxy pyrimidine 0.05 parts, hard asphalt core-shell particles 80 parts, diethylenetriamine 25 parts and 2-methylimidazole 0.2 parts.
The preparation method of the polyurethane comprises the following steps:
Mixing 20g of isophorone diisocyanate and 40g of polyoxypropylene glycol (M n =2000), heating to 90 ℃ for reaction for 2 hours, cooling to 45 ℃, adding 2.6g of dimethylolpropionic acid and 0.25g of dibutyltin dilaurate, heating to 70 ℃ for reaction for 4 hours, and then recovering the room temperature.
The hard asphalt core-shell particle comprises a hard asphalt core body and a polydopamine shell, and the preparation method comprises the following steps:
100g of hard asphalt particles (with the particle size ranging from 0.075 to 1 mm) are added into 500ml of phosphate buffer with pH of 8.0, ultrasonic oscillation is carried out for 30min to disperse the particles, 150g of dopamine hydrochloride is added, stirring reaction is carried out at room temperature for 10h, filtration is carried out, and the obtained solid is washed by water and then dried at 60 ℃ in vacuum for 10 h.
The preparation method of the epoxy asphalt modified material for asphalt pavement repair comprises the following steps:
Mixing epoxy resin E-51, polyurethane, hydroxyl-terminated polybutadiene acrylonitrile, epoxidized hydroxyl-terminated liquid polybutadiene, 2-bis (4-aminophenyl) propane, 2-amino-4, 6-dimethoxy pyrimidine, hard asphalt core-shell particles, diethylenetriamine and 2-methylimidazole, and stirring at 55 ℃ for 15 min.
Example 2:
substantially the same as in example 1, except that the epoxy asphalt modified material comprises the following components in parts by weight:
Epoxy resin E-5160 parts, 30 parts of polyurethane, 10 parts of hydroxyl-terminated polybutadiene acrylonitrile, 10 parts of epoxidized hydroxyl-terminated liquid polybutadiene, 0.5 part of 2, 2-bis (4-aminophenyl) propane, 0.5 part of 2-amino-4, 6-dimethoxy pyrimidine, 100 parts of hard asphalt core-shell particles, 30 parts of diethylenetriamine and 0.5 part of 2-methylimidazole.
Example 3:
substantially the same as in example 1, except that the epoxy asphalt modified material comprises the following components in parts by weight:
epoxy resin E-5140 parts, polyurethane 20 parts, hydroxyl-terminated polybutadiene acrylonitrile 5 parts, epoxidized hydroxyl-terminated liquid polybutadiene 5 parts, 2-bis (4-aminophenyl) propane 0.05 parts, 2-amino-4, 6-dimethoxy pyrimidine 0.05 parts, hard asphalt core-shell particles 50 parts, diethylenetriamine 20 parts and 2-methylimidazole 0.1 part.
Comparative example 1:
Substantially the same as in example 1, except that the hydroxyl-terminated polybutadiene acrylonitrile was not added.
Comparative example 2:
substantially the same as in example 1, except that the epoxidized hydroxyl terminated liquid polybutadiene was not added.
Comparative example 3:
substantially the same as in example 1, except that 2, 2-bis (4-aminophenyl) propane was not added.
Comparative example 4:
Substantially the same as in example 1, except that 2-amino-4, 6-dimethoxypyrimidine was not added.
Comparative example 5:
substantially the same as in example 1, except that the hard asphalt particles were not coated with polydopamine.
Performance test:
The epoxy asphalt modified materials in the examples 1-3 and the comparative examples 1-5 of the invention are used as samples for performance test, the test method is carried out according to JTJ052-2000 test procedure for road asphalt and asphalt mixture, the test temperature is-10+ -0.5 ℃, the loading rate is 50mm/min, the average value is obtained after 5 times of test of each group of samples, and the test results are shown in the following table 1:
Table 1:
As shown in the table 1, the epoxy asphalt modified material provided by the invention has higher mechanical strength at low temperature, and can meet the performance requirement of pavement repair.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The epoxy asphalt modified material for repairing the asphalt pavement is characterized by comprising the following components in parts by weight:
40-60 parts of epoxy resin, 20-30 parts of polyurethane, 5-10 parts of hydroxyl-terminated polybutadiene acrylonitrile, 5-10 parts of epoxidized hydroxyl-terminated liquid polybutadiene, 0.1-1 part of modifier, 50-100 parts of hard asphalt core-shell particles, 20-30 parts of curing agent and 0.1-0.5 part of curing accelerator;
The hard asphalt core-shell particles comprise hard asphalt cores and polydopamine shells;
The preparation method of the hard asphalt core-shell particles comprises the following steps:
Adding hard asphalt particles into phosphate buffer solution, dispersing by ultrasonic oscillation, adding dopamine hydrochloride, stirring at room temperature for reaction for 6-10h, filtering, washing the obtained solid with water, and drying;
The modifier comprises 2, 2-bis (4-aminophenyl) propane and 2-amino-4, 6-dimethoxy pyrimidine, wherein the weight ratio of the 2, 2-bis (4-aminophenyl) propane to the 2-amino-4, 6-dimethoxy pyrimidine is 1-5:1-5.
2. The epoxy asphalt modified material for asphalt pavement repair according to claim 1, wherein the polyurethane is prepared by the following method:
mixing diisocyanate and dihydric alcohol compound, heating to 80-90 deg.c for reaction for 1-3 hr, cooling to 40-50 deg.c, adding dimethylol propionic acid and organic tin catalyst, heating to 60-70 deg.c for reaction for 3-4 hr, and restoring to room temperature.
3. The epoxy asphalt modified material for asphalt pavement repair according to claim 2, wherein the diisocyanate is any one or a combination of more of toluene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, lysine diisocyanate.
4. The epoxy asphalt modified material for asphalt pavement repair according to claim 2, wherein the glycol compound is polyoxypropylene glycol.
5. The epoxy asphalt modified material for asphalt pavement repair according to claim 1, wherein the curing agent is any one or a combination of more of ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.
6. The epoxy asphalt modified material for asphalt pavement repair according to claim 1, wherein the curing accelerator is any one or more of 2-methylimidazole, 2-phenylimidazoline, benzyltriethylammonium chloride and benzyltriethylammonium bromide.
7. The epoxy asphalt modified material for asphalt pavement repair according to any one of claims 1 to 6, which is prepared by the following method:
mixing epoxy resin, polyurethane, hydroxyl-terminated polybutadiene acrylonitrile, epoxidized hydroxyl-terminated liquid polybutadiene, a modifier, hard asphalt core-shell particles, a curing agent and a curing accelerator, and stirring at 50-60 ℃ for 5-15 min.
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| CN202311156757.5A CN117165033B (en) | 2023-09-08 | 2023-09-08 | Epoxy asphalt modified material for asphalt pavement repair |
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| CN202311156757.5A CN117165033B (en) | 2023-09-08 | 2023-09-08 | Epoxy asphalt modified material for asphalt pavement repair |
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