CN115677266A - Anti-flying powder, anti-flying powder smoke-suppressing asphalt mixture and preparation method thereof - Google Patents
Anti-flying powder, anti-flying powder smoke-suppressing asphalt mixture and preparation method thereof Download PDFInfo
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- 239000000203 mixture Substances 0.000 title claims abstract description 103
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 35
- 239000004575 stone Substances 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
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- 239000003208 petroleum Substances 0.000 claims abstract description 18
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
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- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 15
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- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims abstract description 15
- 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
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- 230000008569 process Effects 0.000 claims description 11
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- 239000000920 calcium hydroxide Substances 0.000 claims description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 7
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 6
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 6
- -1 phenol compound Chemical class 0.000 claims description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 claims description 4
- 239000005750 Copper hydroxide Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 4
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 4
- 229910001956 copper hydroxide Inorganic materials 0.000 claims description 4
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-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
- 238000004523 catalytic cracking Methods 0.000 claims description 3
- 235000014413 iron hydroxide Nutrition 0.000 claims description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 3
- 229910000000 metal hydroxide Inorganic materials 0.000 claims description 3
- 150000004692 metal hydroxides Chemical group 0.000 claims description 3
- 229920006122 polyamide resin Polymers 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 150000003505 terpenes Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-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
- 101100257124 Caenorhabditis elegans sma-10 gene Proteins 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
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 229920001225 polyester 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
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
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- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an anti-flying powder, an anti-flying powder smoke-suppressing asphalt mixture and a preparation method thereof. The anti-flying powder comprises the following raw materials: styrene-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, resin, alkyl ammonium chloride, coupling agent, hindered phenolic compound and aromatic oil. The anti-flying-scattering smoke-suppressing asphalt mixture comprises: graded stone, petroleum asphalt, smoke suppressant and anti-flying agent. The anti-scattering smoke-suppressing asphalt mixture has a smoke suppressing effect and also has strong anti-scattering capability.
Description
Technical Field
The invention relates to an anti-flying powder, an anti-flying powder smoke-suppressing asphalt mixture and a preparation method thereof, belonging to the fields of petroleum industry and base material chemistry.
Background
The traditional hot-mix hot-paving process is adopted in the asphalt pavement construction link, and asphalt can contact with oxygen in air and react in the construction process: on one hand, the condensed ring aromatic hydrocarbon with larger molecular weight is generated by condensation reaction and further condensed into colloid and asphaltene; on the other hand, asphalt molecules are cracked under the heating condition to generate compounds with smaller molecular weight, and the volatilization of the small molecular compounds can form asphalt smoke, seriously damage ecological balance, pollute the surrounding environment and damage the human health.
At present, a plurality of valuable practices and practical experiences are accumulated abroad in the aspect of controlling the asphalt smoke pollution, wherein the most common practices are asphalt mixture warm-mixing technology, chemical additive technology and asphalt smoke end treatment technology. The asphalt mixture warm mixing technology is a technology for controlling the emission of smoke in the construction process by reducing the construction temperature on the premise of ensuring the original pavement performance of the asphalt mixture. The warm mix asphalt technology (WMA) essentially enables the mixture to be mixed, paved and compacted at a relatively low temperature, thereby achieving the purposes of saving energy and reducing smoke emission. The chemical additive technology is to add a small amount or trace amount of reagent into the asphalt to achieve the purpose of reducing the generation amount of asphalt smoke. The most foreign application of asphalt flue gas tail end treatment and purification methods are as follows: combustion, electro-capture, adsorption and absorption. The combustion method is started to be used in the United states and Canada as early as 1972, and then the technology is popularized in Japan and Germany, but the combustion method has the disadvantages of high power consumption, difficult control and easy generation of secondary pollution when low-concentration asphalt smoke is treated; the electric catching method is mainly used for treating asphalt smoke generated by a roasting process, and has the defects of large one-time investment, higher requirement on smoke temperature, secondary pollution caused by a wet electric catcher adopted when the asphalt gas volatile matter is caught and the like; the adsorption method is to utilize the adsorbent to carry out physical adsorption on the asphalt flue gas, and the method has simple process, high purification efficiency and larger system resistance; the absorption method has the advantages of simple equipment, convenient maintenance and small system resistance, but has the problems of flammability and low purification efficiency. With rapid economic growth, air quality is facing increasingly severe challenges. The chinese government has developed more stringent air governance regulations and raised higher governance targets. In the "integrated emission standard of atmospheric pollutants", the highest allowable emission standard of atmospheric pollutants is: the new pollution source is 40mg/m under the standard state 3 The existing pollution source is 80mg/m 3 . The local air pollutant comprehensive emission standard DB11/501-2017 also has a clear regulation on asphalt smoke, namely the I time period is 20mg/m in the standard state 3 And the time period II is 10mg/m 3 . In view of the problem that the asphalt pavement releases Volatile Organic Compounds (VOCs) in an unorganized manner in the laying process, the whole process is difficult to collect and treat, how to reduce the release of asphalt smoke on a source is sought, the clean construction of the asphalt pavement is realized, and the harmonious development of the traffic industry and the social economy is ensured.
Therefore, a smoke inhibitor and the like are added to asphalt to reduce the generation amount of asphalt smoke and reduce the harm to constructors. It has been found that the more effective smoke suppressants are metal hydroxides such as calcium hydroxide, magnesium hydroxide, aluminum hydroxide, copper hydroxide, iron hydroxide, etc., such as CN102604396A, CN110204784a. However, inorganic substances such as calcium hydroxide and the like which are directly added cannot be compatible with the asphalt and are dispersed in the asphalt in a granular or fine powder form, so that layering is easily caused; even if the inorganic substance is added during the production of the asphalt mixture, the powdery inorganic substance affects the adhesion strength between the asphalt and the stone, so that the asphalt mixture is easily scattered or the stone is easily detached, and the application is limited. In particular, in order to increase friction and improve driving safety during construction in tunnels, open-graded stones such as asphalt mastic mixtures and the like are often adopted. In addition, the tunnel is dark and moist, water is easy to accumulate, and the asphalt pavement is easy to scatter or stone materials fall off. Therefore, how to reduce the smoke release amount in construction by using the smoke suppressant and improve the construction operation environment without affecting the adhesion to cause stone falling becomes a new research subject, and the development of the anti-scattering smoke suppressant asphalt mixture is needed.
Disclosure of Invention
Aiming at the problem that the smoke-suppressing asphalt mixture is easy to loosen or fall off stone materials in the prior art, the invention provides an anti-flying powder, an anti-flying smoke-suppressing asphalt mixture and a preparation method thereof. The anti-scattering smoke-suppressing asphalt mixture has the smoke suppressing effect and also has stronger anti-scattering capability.
The invention provides an anti-flying powder, which comprises the following raw materials in parts by mass:
3 to 10 parts of styrene-butadiene-styrene copolymer,
5363 parts of ethylene-vinyl acetate copolymer 5~9,
5 to 13 parts of resin, namely,
6 to 11 parts of alkyl ammonium chloride,
0.3 to 0.9 portion of coupling agent,
0.3 to 0.9 portion of hindered phenol compounds,
4 to 10 parts of aromatic oil.
The anti-flying powder disclosed by the invention preferably comprises the following raw materials in parts by mass:
5363 parts of a styrene-butadiene-styrene copolymer 4~9,
5363 parts of ethylene-vinyl acetate copolymer 6~8,
6 to 12 parts of resin, namely,
7 to 10 parts of alkyl ammonium chloride,
0.4 to 0.8 portion of coupling agent,
0.4 to 0.8 portion of hindered phenol compounds,
aromatic oil 5~9 parts.
Further, the styrene-butadiene-styrene copolymer can be linear or star-shaped, and the average relative molecular mass is 11-26 ten thousand.
Furthermore, in the ethylene-vinyl acetate copolymer, the mass content of the combined vinyl acetate is 21wt% -26 wt%, and preferably 22wt% -25 wt%.
Further, the resin is one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin and polyamide resin.
Further, the alkyl ammonium chloride is one or a mixture of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride.
The coupling agent is one or more of silane coupling agent (one or more of types KH550, KH560 and KH 570), aluminate coupling agent and titanate coupling agent.
The hindered phenol compound comprises one or more of 2,8-di-tert-butyl-4-methylphenol, tetra- [3- (3,5-di-tert-butyl-4 hydroxyphenyl) propionic acid ] pentaerythritol ester, beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl alcohol ester, 1,3,5- (3,5-di-tert-butyl-4 hydroxyphenyl) s-triazine-2,4,6 (1H, 3H, 5H) trione.
The aromatic oil is a component rich in aromatic hydrocarbon, wherein the content of the aromatic hydrocarbon is more than 70 percent by mass fraction, and the aromatic hydrocarbon can be selected from one or a mixture of more of reduced tetra-line extract oil, furfural refined extract oil, phenol refined extract oil and catalytic cracking slurry oil.
The anti-flying agent is a viscous paste at normal temperature.
The second aspect of the present invention provides a method for preparing the anti-flying powder, comprising:
the preparation method comprises the steps of uniformly mixing a styrene-butadiene-styrene copolymer, an ethylene-vinyl acetate copolymer, resin, alkyl ammonium chloride, a coupling agent, a hindered phenol compound and aromatic oil, and mixing to obtain the anti-flying powder.
Further, the mixing is carried out using conventional mixing devices, such as kneaders.
Further, the mixing conditions were as follows: the mixing temperature is 130-160 ℃, and the mixing time is 40-90min.
The third aspect of the invention provides an anti-scattering smoke-suppressing asphalt mixture, which comprises the following components in parts by mass:
93 to 96 portions of graded stone material,
5363 portions of petroleum asphalt 3~6 portions,
6 to 20 portions of smoke suppressant,
4736 parts of anti-flying agent 2~6.
Furthermore, the graded stone material is any one of SMA-19, SMA-16, SMA-13 and SMA-10 in the asphalt mastic mixture grading meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical Specification of the Ministry of transportation.
Further, the petroleum asphalt is at least one of oxidized asphalt, blended asphalt, solvent deoiled asphalt and straight-run asphalt, and the penetration of the petroleum asphalt at 25 ℃ is 40-100 dmm.
Further, the smoke suppressant is a metal hydroxide selected from at least one of calcium hydroxide, magnesium hydroxide, aluminum hydroxide, copper hydroxide and iron hydroxide.
The fourth aspect of the invention provides a preparation method of the anti-scattering smoke-suppressing asphalt mixture, which comprises the following steps:
adding molten petroleum asphalt and the anti-flying agent into the preheated graded stone material, uniformly mixing, then adding the smoke suppressant, and uniformly mixing to obtain the anti-flying smoke suppressant asphalt mixture.
Further, the preheating temperature of the graded stone is 140-170 ℃; the heating and melting temperature of the petroleum asphalt is 140-170 ℃.
Further, the molten petroleum asphalt and the anti-flying agent are added, and then the mixture is mixed at the temperature of 140-170 ℃ for 30-90 seconds.
Further, adding a smoke suppressant and mixing at the temperature of 140-170 ℃ for 30-90 seconds.
Furthermore, the mixing mode is carried out in an asphalt mixture mixing pot.
The anti-scattering smoke-suppressing asphalt mixture is particularly suitable for laying tunnel roads.
The invention has the following advantages:
1. the anti-flying agent of the invention makes styrene-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, resin and the like perform graft reaction in a kneading machine and in the screw extrusion process under the action of a coupling agent, the formed product has higher viscosity and flexibility, the kneaded product has better polarity by adding alkyl ammonium chloride, and the anti-flying agent ensures that the asphalt mixture is not loose and does not fly away in the application process by utilizing the high viscosity, the flexibility and the polarity. The addition of hindered phenol compounds can improve the anti-aging capability of the substances containing unsaturated bonds, and further improve the anti-shedding agent and the heat aging resistance of asphalt. Under the action of aromatic oil, the components are easy to fuse, the reaction condition is reduced, the energy is saved, and the low-temperature performance is improved. Therefore, the anti-stripping agent of the invention comprehensively strengthens the adhesion strength of the asphalt to stone materials from various aspects and improves the high-temperature stripping resistance of the asphalt.
2. The anti-flying powder is a paste, so that the mixing time is shortened and the mixing temperature is reduced during preparation; when in use, the step of stirring and mixing with stone materials in advance can be saved, the stirring and mixing time is reduced, the stirring and mixing temperature is reduced, and the production efficiency is improved.
3. The scattering-resistant smoke-inhibiting asphalt mixture has high adhesion, strong scattering-resistant capability and smoke-inhibiting effect.
4. In the preparation process of the anti-flying and smoke-suppressing asphalt mixture, the anti-flying agent is mixed with the stone and adhered to the surface of the stone, so that the adhesive strength of the mixture can be improved; after the asphalt is added and mixed uniformly, the smoke suppressant is added to prevent the smoke suppressant from directly contacting with the stone, so that the loosening of the mixture or the falling of the stone caused by the addition of inorganic substances such as hydroxide and the like is avoided, and the anti-scattering capability is further improved.
Detailed Description
The following examples are given to illustrate the technical aspects of the present invention in detail, but the present invention is not limited to the following examples. In the present invention, wt% is a mass fraction.
Example 1
Preparation of anti-flying powder
Weighing 31.0kg of linear styrene-butadiene-styrene copolymer with average relative molecular mass of 12 ten thousand, 51.0kg of ethylene-vinyl acetate copolymer with combined vinyl acetate mass content of 22wt%, 51.0kg of carbon penta petroleum resin, 61.0 kg of octadecyl trimethyl ammonium chloride, 3.1kg of silane coupling agent (model KH 550), 3.1kg of 2,8-di-tert-butyl-4-methylphenol and 41.0 kg of minus four-line extraction oil, placing the mixture in a kneader to be kneaded, wherein the kneading temperature is 132 ℃, and the kneading time is 42min; obtaining the pasty anti-flying powder. The distribution ratio of each component is shown in table 1.
(II) preparing the anti-flying-scattering smoke-suppressing asphalt mixture
Weighing SMA-19 graded stone material 93.5 kg in a premade asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant temperature oven, heating to 143 ℃ and keeping the temperature for later use; weighing straight-run asphalt 3.1kg with a penetration degree of 98 dmm at 25 ℃, placing in a constant-temperature oven, heating to 143 ℃ and keeping the temperature for later use; weighing magnesium hydroxide 6.1 kg; weighing the anti-flying powder 2.1 kg for later use; the mixing kettle is heated to 143 ℃ for standby. The distribution ratio of each component is shown in table 2.
And after the temperature of the materials and the mixing pot reaches the requirement, pouring the graded stone materials into the mixing pot, adding the anti-flying agent and the asphalt, stirring for 32 seconds at the constant temperature of 143 ℃, and finally adding the magnesium hydroxide, and stirring for 32 seconds at the constant temperature of 143 ℃ to obtain the anti-flying smoke-suppressing asphalt mixture.
(III) testing the anti-flying performance of the asphalt mixture
The anti-scattering performance of the anti-scattering smoke-suppressing asphalt mixture is evaluated by using a los angeles abrasion tester produced by Beijing high-speed railway engineering development Limited company and a test method specified in T0733-2011 asphalt mixture Kentabao scattering test in communications department JTG E20-2011 road engineering asphalt and asphalt mixture test procedure, and the results are shown in Table 3.
(IV) the PGM-6208 gas detector manufactured by HONEYWELL USA is used for detecting the generation amount of harmful gas of the mixture at the use temperature, and the result is shown in Table 4.
Example 2
Preparation of anti-flying powder
Weighing 88.0kg of star-shaped styrene-butadiene-styrene copolymer with average relative molecular mass of 25 million, 78.0kg of ethylene-vinyl acetate copolymer with the combined vinyl acetate mass content of 25wt%, 118.0 kg of polyamide resin, 98.0 kg of hexadecyltrimethylammonium chloride, 7.8 kg of aluminate coupling agent, 7.8 kg of tetra- [3- (3,5-di-tert-butyl-4 hydroxyphenyl) propionic acid ] pentaerythritol ester, 88.0kg of furfural refined extract oil, placing the mixture in a kneader for kneading at 158 ℃ for 88min; obtaining the pasty anti-flying powder. The distribution ratio of each component is shown in table 1.
(II) preparing the anti-flying-scattering smoke-suppressing asphalt mixture
Weighing SMA-16-grade stone material 95.8 kg in a premade asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant-temperature oven, heating the mixture to 168 ℃ and keeping the temperature constant for later use; weighing solvent deoiled asphalt 5.8 kg with a penetration degree of 42dmm at 25 ℃, placing in a constant-temperature oven, heating to 168 ℃ and keeping the temperature for later use; weighing 19.0 kg of aluminum hydroxide; weighing the anti-flying powder 5.8 kg for later use; the mixing kettle is heated to 168 ℃ for standby. The distribution ratio of each component is shown in table 2.
And after the temperature of the materials and the mixing pot reaches the requirement, pouring the graded stone materials into the mixing pot, adding the anti-flying agent and the asphalt, stirring for 88 seconds at the constant temperature of 168 ℃, and finally adding the aluminum hydroxide, stirring for 88 seconds at the constant temperature of 168 ℃ to obtain the anti-flying smoke-suppressing asphalt mixture.
(III) testing the anti-flying performance of the asphalt mixture
The anti-scattering performance of the anti-scattering smoke-suppressing asphalt mixture was evaluated by using a los angeles abrasion tester produced by Beijing high-speed railway construction science and technology development Limited and by using a test method specified in "T0733-2011 asphalt mixture Kentaburg scattering test" of communications department "JTG E20-2011 road engineering asphalt and asphalt mixture test procedure", and the results are shown in Table 3.
(IV) the PGM-6208 gas detector manufactured by HONEYWELL USA is used for detecting the generation amount of harmful gas of the mixture at the use temperature, and the result is shown in Table 4.
Example 3
Preparation of anti-flying powder
Weighing 65.0kg of star-shaped styrene-butadiene-styrene copolymer with average relative molecular mass of 18 ten thousand, 70.0kg of ethylene-vinyl acetate copolymer with combined vinyl acetate mass content of 23wt%, 90.0 kg of terpene resin, 85.0 kg of octadecyl trimethyl ammonium chloride, 6.0 kg of titanate coupling agent, 6.0 kg of beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl alcohol ester, 70.0kg of phenol refined extract oil, placing the mixture in a kneader for mixing, wherein the mixing temperature is 145 ℃, and the mixing time is 65min; obtaining the pasty anti-flying powder. The distribution ratio of each component is shown in table 1.
(II) preparing the anti-flying-scattering smoke-suppressing asphalt mixture
Weighing SMA-13-grade stone 94.5 kg in a premade asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant-temperature oven, heating to 155 ℃ and keeping the temperature constant for later use; weighing oxidized asphalt 4.5kg with a penetration degree of 70 dmm at 25 ℃, placing in a constant-temperature oven, heating to 155 ℃ and keeping the temperature for later use; weighing 13.0kg of calcium hydroxide; weighing the anti-flying powder 4.0kg for later use; the mixing kettle was heated to 155 ℃ for use. The distribution ratio of each component is shown in table 1.
And after the temperature of the materials and the mixing pot reaches the requirements, pouring the graded stone materials into the mixing pot, adding the anti-flying agent and the asphalt, stirring at the constant temperature of 155 ℃ for 60 seconds, finally adding the calcium hydroxide, and stirring at the constant temperature of 155 ℃ for 60 seconds to obtain the anti-flying smoke-suppressing asphalt mixture.
(III) testing the anti-scattering performance of the asphalt mixture
The anti-scattering performance of the anti-scattering smoke-suppressing asphalt mixture was evaluated by using a los angeles abrasion tester produced by Beijing high-speed railway construction science and technology development Limited and by using a test method specified in "T0733-2011 asphalt mixture Kentaburg scattering test" of communications department "JTG E20-2011 road engineering asphalt and asphalt mixture test procedure", and the results are shown in Table 3.
(IV) the PGM-6208 gas detector manufactured by HONEYWELL USA is used for detecting the generation amount of harmful gas of the mixture at the use temperature, and the result is shown in Table 4.
Example 4
(I) preparation of anti-flying powder
Weighing 44.0kg of linear styrene-butadiene-styrene copolymer with the average relative molecular mass of 11 ten thousand, 65.0kg of ethylene-vinyl acetate copolymer with the combined vinyl acetate mass content of 22wt%, 65.0kg of coumarone resin 65.0kg, 75.0kg of hexadecyltrimethylammonium chloride, 4.5kg of silane coupling agent (model KH 560), 1,3,5- (3,5-di-tert-butyl-4 hydroxyphenyl) s-triazine-2,4,6 (1H, 3H, 5H) trione 4.5kg and 55.0 kg of catalytic cracking slurry, placing the mixture in a kneader to be kneaded at the kneading temperature of 140 ℃ for 50min; obtaining the pasty anti-flying powder. The distribution ratio of each component is shown in table 1.
(II) preparing the anti-flying-scattering smoke-suppressing asphalt mixture
Weighing SMA-19 graded stone material 95.0 kg in a prepared asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant-temperature oven, heating the mixture to 140 ℃ and keeping the temperature constant for later use; weighing 5.0kg of the blended asphalt with the penetration of 85 dmm at 25 ℃, placing the blended asphalt in a constant-temperature oven, and heating to 150 ℃ for later use; weighing 9.0 kg of copper hydroxide; weighing 3.0kg of the anti-flying powder for standby; the mixing kettle is heated to 150 ℃ for standby. The proportions of the components are shown in Table 1.
And after the temperature of the materials and the mixing pot reaches the requirement, pouring the graded stone materials into the mixing pot, adding the anti-flying agent and the asphalt, stirring for 45 seconds at the constant temperature of 150 ℃, finally adding the calcium hydroxide, and stirring for 45 seconds at the constant temperature of 150 ℃ to obtain the anti-flying smoke-suppressing asphalt mixture.
(III) testing the anti-flying performance of the asphalt mixture
The anti-scattering performance of the anti-scattering smoke-suppressing asphalt mixture was evaluated by using a los angeles abrasion tester produced by Beijing high-speed railway construction science and technology development Limited and by using a test method specified in "T0733-2011 asphalt mixture Kentaburg scattering test" of communications department "JTG E20-2011 road engineering asphalt and asphalt mixture test procedure", and the results are shown in Table 3.
(IV) the PGM-6208 gas detector manufactured by HONEYWELL USA is used for detecting the generation amount of harmful gas of the mixture at the use temperature, and the result is shown in Table 4.
Comparative example 1
Weighing SMA-16-grade stone material 95.8 kg in a premade asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant-temperature oven, heating the mixture to 168 ℃ and keeping the temperature constant for later use; weighing solvent deoiled asphalt 5.8 kg with a penetration degree of 42dmm at 25 ℃, placing in a constant-temperature oven, heating to 168 ℃ and keeping the temperature for later use; weighing 19.0 kg of aluminum hydroxide for later use; the mixing kettle is heated to 168 ℃ for standby. The distribution ratio of each component is shown in table 2.
And after the temperature of the materials and the mixing pot reaches the requirement, pouring the graded stone materials into the mixing pot, adding asphalt, stirring for 88 seconds at the constant temperature of 168 ℃, and finally adding aluminum hydroxide, stirring for 88 seconds at the constant temperature of 168 ℃ to obtain an asphalt mixture.
The flying-resistant performance of the asphalt mixture was evaluated by the test method specified in "T0733-2011 asphalt mixes kentuckberg flying test" of the "JTG E20-2011 highway engineering asphalt and asphalt mixes test protocol" in the department of transportation, and the results are shown in table 3.
The amount of harmful gases generated at the use temperature of the mixed materials was measured by a PGM-6208 gas detector manufactured by HONEYWELL USA, and the results are shown in Table 4.
Comparative example 2
Weighing SMA-16-grade stone material 95.8 kg in a premade asphalt mastic mixture meeting the requirements of JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation, placing the mixture in a constant-temperature oven, heating the mixture to 168 ℃ and keeping the temperature constant for later use; weighing solvent deoiled asphalt 5.8 kg with a penetration degree of 42dmm at 25 ℃, placing in a constant-temperature oven, heating to 168 ℃ and keeping the temperature for later use; weighing 19.0 kg of aluminum hydroxide; weighing a commercial anti-stripping agent PAVE192 produced by 5.8 kg Invitrogen corporation for later use; the mixing kettle is heated to 168 ℃ for standby. The distribution ratio of each component is shown in table 2.
And after the temperature of the materials and the mixing pot reaches the requirement, pouring the graded stone materials into the mixing pot, adding the commercial anti-stripping agent and the asphalt, stirring for 88 seconds at the constant temperature of 168 ℃, and finally adding the aluminum hydroxide, and stirring for 88 seconds at the constant temperature of 168 ℃ to obtain the asphalt mixture.
The flying-resistant performance of the asphalt mixture is evaluated by using a los angeles abrasion tester produced by Beijing high-speed railway construction science and technology development Limited and by using a test method specified in the test procedure of T0733-2011 asphalt mixture Kentaburg of the communication department of JTG E20-2011 road engineering asphalt and asphalt mixture, and the results are shown in Table 3.
The amount of harmful gases generated from the mixed materials at the use temperature was measured by a PGM-6208 gas detector manufactured by HONEYWELL USA, and the results are shown in Table 4.
TABLE 1 preparation of anti-flying agent raw material dosage
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Styrene-butadiene-styrene copolymer/kg | 31.0 | 88.0 | 65.0 | 44.0 |
| Ethylene-vinyl acetate copolymer/kg | 51.0 | 78.0 | 70.0 | 65.0 |
| Resin/kg | 51.0 | 118.0 | 90.0 | 65.0 |
| Alkyl ammonium chloride/kg | 61.0 | 98.0 | 85.0 | 75.0 |
| Coupling agent/kg | 3.1 | 7.8 | 6.0 | 4.5 |
| Hindered phenolic compound/kg | 3.1 | 7.8 | 6.0 | 4.5 |
| Aromatic oil/kg | 41.0 | 88.0 | 70.0 | 55.0 |
TABLE 2 dosage of raw materials for anti-flying-scattering smoke-suppressing asphalt mixture
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | |
| Gradation stone/kg | 93.5 | 95.8 | 94.5 | 95.0 | 95.8 | 95.8 |
| Petroleum asphalt/kg | 3.1 | 5.8 | 4.5 | 5.0 | 5.8 | 5.8 |
| Smoke suppressant/kg | 6.1 | 19.0 | 13.0 | 9.0 | 19.0 | 19.0 |
| Anti-flying powder/kg | 2.1 | 5.8 | 4.0 | 3.0 | - | - |
| Commercial anti-shedding agent/kg | - | - | - | - | - | 5.8 |
TABLE 3 asphalt mixture Kentabao fly-off test results
* Note: JTG F40-2004 highway asphalt pavement construction technical specification of the department of transportation.
Evaluation of a Kentaburg scattering test of the asphalt mixture shows that the smaller the loss of the asphalt mixture is, the stronger the loose resistance and the scattering resistance of the represented mixture are. As can be seen from Table 3, the anti-scattering smoke-suppressing asphalt mixture of the present invention has a strong anti-scattering ability.
TABLE 4 amount of harmful gas generated at respective use temperatures
| Gas species | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 |
| NO/ ppm | 8.6 | 6.5 | 5.2 | 7.8 | 11.5 | 10.9 |
| NO 2 /ppm | 7.3 | 5.2 | 4.0 | 6.4 | 7.1 | 7.4 |
| CO/ ppm | 203.0 | 188.1 | 181.1 | 194.4 | 278.2 | 268.2 |
| H 2 S/ ppm | 8.7 | 8.4 | 7.2 | 7.4 | 10.0 | 10.3 |
| SO 2 / ppm | 9.2 | 8.0 | 4.3 | 7.2 | 10.2 | 10.4 |
| CH 3 SH/ ppm | 4.0 | 3.9 | 2.0 | 3.5 | 4.1 | 4.5 |
| Hydrocarbons per ppm | 4.1 | 3.9 | 2.2 | 3.2 | 4.2 | 4.3 |
As can be seen from Table 4, the amount of harmful gas generated in the anti-scattering smoke-suppressing asphalt mixture is substantially equivalent to that in the comparative example in the using process, namely, the smoke suppressing effect is not affected after the anti-scattering agent is added.
Claims (19)
1. The anti-flying powder comprises the following raw materials in parts by weight:
3 to 10 parts of styrene-butadiene-styrene copolymer,
5363 parts of ethylene-vinyl acetate copolymer 5~9,
5 to 13 parts of resin, namely,
6 to 11 parts of alkyl ammonium chloride,
0.3 to 0.9 portion of coupling agent,
0.3 to 0.9 portion of hindered phenol compounds,
4 to 10 parts of aromatic oil.
2. The anti-blooming agent of claim 1, wherein: the composite material comprises the following raw materials in parts by mass:
5363 parts of a styrene-butadiene-styrene copolymer 4~9,
5363 parts of ethylene-vinyl acetate copolymer 6~8,
6 to 12 parts of resin, namely,
7 to 10 parts of alkyl ammonium chloride,
0.4 to 0.8 part of a coupling agent,
0.4 to 0.8 portion of hindered phenol compounds,
aromatic oil 5~9 parts.
3. The anti-blooming agent of claim 1 or 2, wherein: the styrene-butadiene-styrene copolymer is linear or star-shaped, and the average relative molecular mass is 11-26 million.
4. The anti-blooming agent of claim 1 or 2, wherein: in the ethylene-vinyl acetate copolymer, the mass content of the combined vinyl acetate is 21-26 wt%.
5. The anti-blooming agent of claim 1 or 2, wherein: the resin is one or more of petroleum resin, terpene resin, rosin resin, coumarone resin, phenolic resin, polyester resin and polyamide resin.
6. The anti-blooming agent of claim 1 or 2, wherein: the alkyl ammonium chloride is one or a mixture of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride.
7. The anti-dusting agent of claim 1 or 2, wherein the coupling agent is one or more of a silane coupling agent, an aluminate coupling agent, and a titanate coupling agent.
8. An anti-flyweight agent according to claim 1 or 2, wherein the hindered phenol compound comprises one or more of 2,8-di-tert-butyl-4-methylphenol, pentaerythritol tetrakis- [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], octadecyl β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1,3,5- (3,5-di-tert-butyl-4-hydroxyphenyl) s-triazine-2,4,6 (1H, 3H, 5H) trione.
9. The anti-blooming agent of claim 1 or 2, wherein: the aromatic oil is a component rich in aromatic hydrocarbon, wherein the content of the aromatic hydrocarbon is more than 70 percent by mass fraction, and the aromatic hydrocarbon is selected from one or a mixture of more of reduced tetra-line extract oil, furfural refined extract oil, phenol refined extract oil or catalytic cracking slurry oil.
10. The anti-blooming agent of claim 1 or 2, wherein: the anti-flying agent is a viscous paste at normal temperature.
11. A process for the preparation of an anti-flyaway agent according to any one of claims 1 to 10, comprising:
the preparation method comprises the steps of uniformly mixing a styrene-butadiene-styrene copolymer, an ethylene-vinyl acetate copolymer, resin, alkyl ammonium chloride, a coupling agent, a hindered phenol compound and aromatic oil, and mixing to obtain the anti-flying powder.
12. The method of claim 11, wherein: the mixing conditions were as follows: the mixing temperature is 130-160 ℃, and the mixing time is 40-90min.
13. The anti-flying-scattering smoke-suppressing asphalt mixture comprises the following components in parts by weight:
93 to 96 portions of graded stone material,
5363 portions of petroleum asphalt 3~6 portions,
6 to 20 portions of smoke suppressant,
the anti-blooming agent of any one of claims 1-10, 2~6 parts.
14. The mixture according to claim 13, wherein the graded stone material is any one of graded stone materials of asphalt mastic mixture, SMA-19, SMA-16, SMA-13 and SMA-10, which meet the technical Specification for constructing asphalt pavements on roads of JTG F40-2004 of the Ministry of transportation.
15. The mixture according to claim 13, wherein the petroleum asphalt is at least one of oxidized asphalt, blended asphalt, solvent deoiled asphalt and straight-run asphalt, and the penetration of the petroleum asphalt at 25 ℃ is 40 to 100 dmm.
16. The mix of claim 13, wherein said smoke suppressant is a metal hydroxide, preferably at least one of calcium hydroxide, magnesium hydroxide, aluminum hydroxide, copper hydroxide, and iron hydroxide.
17. A method for preparing an anti-fly and smoke-suppressing asphalt mixture as claimed in any one of claims 13 to 16, comprising:
adding molten petroleum asphalt and the anti-flying agent into the preheated graded stone material, uniformly mixing, then adding the smoke suppressant, and uniformly mixing to obtain the anti-flying and smoke-suppressing asphalt mixture.
18. The method of claim 17, wherein the preheating temperature of the graded stone material is 140 ℃ to 170 ℃; and/or the heating and melting temperature of the petroleum asphalt is 140-170 ℃.
19. The method of claim 17, wherein the molten petroleum asphalt and the anti-flying agent are added and mixed at a temperature of 140 ℃ to 170 ℃ for 30 to 90 seconds;
and/or adding the smoke suppressant and mixing at the temperature of 140-170 ℃ for 30-90 seconds.
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