CN104559266A - Warm mixing agent and preparation method thereof - Google Patents
Warm mixing agent and preparation method thereof Download PDFInfo
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- CN104559266A CN104559266A CN201510048095.9A CN201510048095A CN104559266A CN 104559266 A CN104559266 A CN 104559266A CN 201510048095 A CN201510048095 A CN 201510048095A CN 104559266 A CN104559266 A CN 104559266A
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- warm
- agent
- mixing agent
- asphalt
- amides
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- 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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- Working-Up Tar And Pitch (AREA)
Abstract
The invention relates to a warm mixing agent and a preparation method thereof and relates to a modifier, and particularly relates to a modifier of asphalt. The warm mixing agent provided by the invention aims to provide the warm mixing agent capable of reducing the mixing temperature of an asphalt mixture and improving the anti-rut capacity and low-temperature bending property of the asphalt mixture and the preparation method thereof. The warm mixing agent comprises 60-90 parts of amide compounds, 1-10 parts of an asphalt anti-stripping agent, 1-10 parts of an asphalt extensibility modifier and 5-20 parts of an elastomer modifier. The warm mixing agent provided by the invention is convenient to use. The warm mixing agent is added into asphalt, so that the mixing temperature of the asphalt mixture can be reduced, and moreover, the anti-rut capacity and low-temperature bending property of the asphalt mixture are improved. The warm mixing agent provided by the invention is used in the field of asphalt modification.
Description
Technical field
The present invention relates to a kind of properties-correcting agent, particularly relate to a kind of properties-correcting agent for pitch.
Background technology
Traditional hot-mix asphalt mixture, needs to heat base-material at high temperature to mix and stir, consumes a large amount of energy; And in use can produce a large amount of flue gases, cause the pollution of construction environment, harm workmen's is healthy.Traditional hot-mix asphalt mixture mixes and stirs that temperature is high, mold temperature is high, ageing of asphalt, cannot construct when winter temperature is low and at high altitudes and cold.
Also have some warm-mixing agents on the market at present, it is substantially all only reduce asphalt mixing temperature, substantially keeps performance of asphalt mixture, the anti-rut behavior that even can reduce asphalt had or low-temperature bending performance.There is no at present to have the feature that low temperature mixes and stirs on the market simultaneously, and the warm-mixing agent of excellent property.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of mix temperature, the raising rutting resistance of asphalt and the warm-mixing agent of low-temperature bending performance and preparation method thereof that can reduce asphalt.
A kind of warm-mixing agent of the present invention, it comprises the elastomer modifier of 60-90 part amides, 1-10 part asphalt anti-stripping agent, 1-10 part bitumen ductility properties-correcting agent and 5-20 part;
Wherein, described amides is obtained for 1:0.5-1:1.5 reacts in mass ratio by lipid acid and quadrol, and its fusing point is greater than 65 DEG C;
Described bitumen ductility properties-correcting agent is vulcanization accelerator;
Described elastomer modifier is ethylene-vinyl acetate copolymer (EVA).
Further, a kind of warm-mixing agent of the present invention, described lipid acid is one or more in oleic acid, stearic acid, lauric acid.
Further, a kind of warm-mixing agent of the present invention, described asphalt anti-stripping agent is stearic acid salt antistripping agent, its for faint yellow to brown solid, fusing point be 60-95 DEG C.
Further, a kind of warm-mixing agent of the present invention, described vulcanization accelerator is two-(t-butylperoxyisopropyl) benzene (BIPB), dicumyl peroxide (DCP) or sulphur.
The preparation method of a kind of warm-mixing agent of the present invention, comprises the following steps:
One, the preparation of amides: in nitrogen environment by lipid acid and quadrol under catalyst action, 100-200 DEG C of reaction 1-8h, dehydrating condensation obtains amides;
Two, add asphalt anti-stripping agent, bitumen ductility properties-correcting agent and elastomer modifier in obtained in step one amides, stir 0.5-3h at 100-160 DEG C, sulfuration promotes crosslinking reaction, is cooled to normal temperature, i.e. obtained warm-mixing agent;
Wherein, described catalyzer is phosphoric acid or phosphorous acid, and its quality is the 0.2-0.5% of lipid acid and quadrol total mass.
The present invention reduces asphaltene molecule intermolecular forces by amide group thus reduces asphalt viscosity, owing to adopting fusing point to be greater than 65 DEG C of fatty acid amides and to improve the softening temperature of pitch and the anti-rut behavior of asphalt.Although be greater than 65 DEG C of acid amides as adopted separately fusing point to be conducive to improving pitch softening point, reducing asphalt viscosity, the low-temperature bending performance of bitumen ductility and asphalt can be reduced; In obtained amides, add EVA, by warm-mixing agent obtained after vulcanization accelerator vulcanization crosslinking, the softening temperature that namely improve pitch, the viscosity reducing pitch, increase the low-temperature ductility of pitch simultaneously.Be used alone amides or ethylene-vinyl acetate copolymer (EVA) all can not increase substantially pitch low-temperature performance to asphalt modification, amides also can reduce pitch low-temperature performance, and EVA modifying asphalt can have certain improvement to pitch low temperature but not reach ideal effect.Amides and EVA are by obtaining reticulated structure multipolymer after the reaction of BIPB vulcanization crosslinking, and this network copolymer can increase substantially pitch low-temperature performance.
Warm-mixing agent of the present invention and preparation method thereof is with the difference of prior art:
1, the product that obtains of the preparation method of warm-mixing agent of the present invention, its fusing point is greater than 65 DEG C, can reduce viscosity during pitch 135 DEG C, significantly improves viscosity during pitch 60 DEG C simultaneously; Can pitch softening point be improved, pitch low-temperature ductility can also be increased.Add warm-mixing agent of the present invention can reduce asphalt heating temperature, reduce the work-ing life that ageing of asphalt extends asphalt.
2, the warm-mixing agent that the present invention obtains not only achieves the mix temperature lowering asphalt, also increase substantially rutting resistance and the low-temperature bending performance of asphalt, overcome current warm-mixing agent reduction asphalt mixing temperature and substantially keep performance of asphalt mixture, even slightly can reduce the Rut resistance of compound and the situation of low-temperature bending performance.
3, adopt product of the present invention that pitch can be made to mix and stir process at a lower temperature, about 20-30 DEG C can be reduced than hot asphalt, energy consumption during bituminous mixture can be reduced on the one hand, significantly reduce simultaneously and mix and stir carbon dioxide in process (CO
2), nitrogen oxide (NO
x) and volatilizable organic quantity discharged, also can reduce the discharge of tail gas and glance coal in paving process widely, improve the operating environment of construction worker; Engineering it is pressed for time can be made to be delivered for use rapidly on the other hand; In addition, when carrying out asphalt regenerative and having the area of inclement weather situation that subsidiary material also can be it can be used as to come into operation, such as in high altitudes and cold construction and winter construction, do not need to extend the mixing time, the full load operation of equipment, extension device life-span can be ensured.
4, warm-mixing agent of the present invention is easy to use, can add in pitch in advance, and pitch mixes use; Also directly can drop into the mixing in cylinder of asphalt, and pitch is used in combination.
Embodiment
Below in conjunction with embodiment and proof test, warm-mixing agent of the present invention and preparation method thereof is further described.
Embodiment 1
The warm-mixing agent of the present embodiment is prepared according to the following steps:
One, the preparation of amides: in the 500mL four-hole boiling flask that agitator, thermometer, condenser, water trap are housed, first use nitrogen replacement, then 120g oleic acid, 60g quadrol and 0.54g phosphoric acid is added successively, stir, pass into nitrogen protection simultaneously, 150 DEG C are stirred 4h, and cooling obtains amine hydroxybenzene;
Two, in a kind of obtained amides of step, add 3g asphalt anti-stripping agent, 18g bis--(t-butylperoxyisopropyl) benzene and 60gEVA, stir 3h at 150 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent.
Embodiment 2
One, the preparation of amides: in the 500mL four-hole boiling flask that agitator, thermometer, condenser, water trap are housed, first use nitrogen replacement, then 105g stearic acid, 150g quadrol and 0.51g phosphoric acid is added successively, stir, pass into nitrogen protection simultaneously, 120 DEG C are stirred 6h, and cooling obtains stearic amide;
Two, in a kind of obtained amides of step, add 10g asphalt anti-stripping agent, 10g dicumyl peroxide and 36gEVA, stir 1h at 100 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent.
Embodiment 3
One, the preparation of amides: in the 500mL four-hole boiling flask that agitator, thermometer, condenser, water trap are housed, first use nitrogen replacement, then 120g lauric acid, 120g quadrol and 0.96g phosphorous acid is added successively, stir, pass into nitrogen protection simultaneously, 200 DEG C are stirred 1h, and cooling obtains lauric amide;
Two, in a kind of obtained amides of step, add 26g asphalt anti-stripping agent, 3g sulphur and 27gEVA, stir 1.5h at 110 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent.
Embodiment 4
One, the preparation of amides: in the 500mL four-hole boiling flask that agitator, thermometer, condenser, water trap are housed, first use nitrogen replacement, then 56g oleic acid, 52g lauric acid, 162g quadrol and 1.35g phosphorous acid is added successively, stir, pass into nitrogen protection simultaneously, 180 DEG C are stirred 2h, and cooling obtains the mixture of amine hydroxybenzene and lauric amide;
Two, in a kind of obtained amides of step, add 30g asphalt anti-stripping agent, 26g bis--(t-butylperoxyisopropyl) benzene and 15gEVA, stir 0.5h at 130 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent.
Embodiment 5
One, the preparation of amides: in the 500mL four-hole boiling flask that agitator, thermometer, condenser, water trap are housed, first use nitrogen replacement, then 33g oleic acid, 58g stearic acid, 23g lauric acid, 96g quadrol and 0.42g phosphorous acid is added successively, stir, pass into nitrogen protection simultaneously, 100 DEG C are stirred 8h, and cooling obtains the mixture of amine hydroxybenzene, stearic amide and lauric amide;
Two, in a kind of obtained amides of step, add 18g asphalt anti-stripping agent, 30g dicumyl peroxide and 48gEVA, stir 2.5h at 160 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent.
The XT-G1 that the asphalt anti-stripping agent used in above embodiment is produced for Changzhou Xin Tuo pavement modified material company limited.The warm-mixing agent that the present invention obtains adds convenient, both can add in pitch in advance, and pitch mixes; Also directly can drop into the mixing in cylinder of asphalt, and pitch mixes.
Embodiment 6
The use step of the warm-mixing agent of the present embodiment is as follows: in the matrix pitch of 120-150 DEG C, add warm-mixing agent of the present invention, stir.
Embodiment 7
The use step of the warm-mixing agent of the present embodiment is as follows: in the modifying asphalt of 135-165 DEG C, add warm-mixing agent of the present invention, stir.
Embodiment 8
The use step of the warm-mixing agent of the present embodiment is as follows: mix cylinder add building stones after, directly warm-mixing agent added mix cylinder, add pitch simultaneously and mix mixing cylinder, mixing and stirring by the mixing time of original pitch, do not need increase churning time.
The product obtained by above embodiment 1-5 is according to the using method of embodiment 6, and the warm-mixing agent adding 3% in matrix pitch obtains asphaltic products., detects the property indices of products obtained therefrom; And with add adopt method of the present invention but do not add EVA and vulcanizing agent obtain product pitch (CK1), add and adopt method of the present invention but do not add the pitch (CK2) that fatty acyl amide compound and vulcanizing agent obtain product and the pitch (CK) not adding any properties-correcting agent contrasts.Acquired results is as shown in table 1.
Table 1 embodiment 1-5 obtains the performance index of product
As shown in Table 1, warm-mixing agent prepared by the present invention, can not only reduce pitch and mix and stir temperature, reduce fuel consumption, lower Asphalt Smoke Emission, reduce ageing of asphalt, also increased substantially asphalt mixture anti-rutting performance, low-temperature bending performance and adhered to grade.It both can have been worked as warm-mixing agent and use, and can also use as asphalt modifier, it has possessed complex function simultaneously.Product of the present invention changes existing warm-mixing agent reducing drop mix temperature and can only substantially keep original mixture performance even slightly can reduce an index in original compound high temperature or low temperature.After warm-mixing agent of the present invention adds pitch, meet the technical indicator that JTGF40-2004 " standard specification for construction and acceptance of highway asphalt pavement " requires.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (5)
1. a warm-mixing agent, is characterized in that: the elastomer modifier comprising 60-90 part amides, 1-10 part asphalt anti-stripping agent, 1-10 part bitumen ductility properties-correcting agent and 5-20 part;
Wherein, described amides is obtained for 1:0.5-1:1.5 reacts in mass ratio by lipid acid and quadrol, and its fusing point is greater than 65 DEG C;
Described bitumen ductility properties-correcting agent is vulcanization accelerator;
Described elastomer modifier is ethylene-vinyl acetate copolymer.
2. warm-mixing agent according to claim 1, is characterized in that: described lipid acid is one or more in oleic acid, stearic acid, lauric acid.
3. warm-mixing agent according to claim 1, is characterized in that: described asphalt anti-stripping agent is stearic acid salt antistripping agent, its for faint yellow to brown solid, fusing point be 60-95 DEG C.
4. warm-mixing agent according to claim 1, is characterized in that: described vulcanization accelerator is two-(t-butylperoxyisopropyl) benzene, dicumyl peroxide or sulphur.
5. a preparation method for the warm-mixing agent of claim 1-5 described in one of them, is characterized in that comprising the following steps:
One, the preparation of amides: in nitrogen environment, lipid acid, quadrol and catalyzer are mixed, 100-200 DEG C is stirred 1-8h, i.e. obtained amides;
Two, add asphalt anti-stripping agent, bitumen ductility properties-correcting agent and elastomer modifier in obtained in step one amides, stir 0.5-3h at 100-160 DEG C, be cooled to normal temperature, be i.e. obtained warm-mixing agent;
Wherein, described catalyzer is phosphoric acid or phosphorous acid, and its quality is the 0.2-0.5% of lipid acid and quadrol total mass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510048095.9A CN104559266A (en) | 2015-01-29 | 2015-01-29 | Warm mixing agent and preparation method thereof |
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| CN201510048095.9A CN104559266A (en) | 2015-01-29 | 2015-01-29 | Warm mixing agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633947A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Warm-mixed polymer modified asphalt and preparation method thereof |
| WO2018189570A1 (en) * | 2017-04-12 | 2018-10-18 | Quimikao, S.A. De C.V. | Warm mix asphalt compositions as a pavement surface treatment |
| CN109988431A (en) * | 2019-03-01 | 2019-07-09 | 张燕军 | A kind of medium temperature modified asphalt mixture additive and its preparation and application |
| CN115073064A (en) * | 2022-07-22 | 2022-09-20 | 新乡市通达公路新科技有限公司 | Hot mixing agent for repairing pit and groove |
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| CN101602862A (en) * | 2009-07-01 | 2009-12-16 | 天津大学 | Warm-mixed asphalt additive and preparation method thereof |
| CN102093724A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Warm-mix asphalt additive and preparation method thereof |
| CN102234432A (en) * | 2010-04-28 | 2011-11-09 | 上海益泰能源科技有限公司 | Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application |
| CN103242666A (en) * | 2013-05-23 | 2013-08-14 | 长安大学 | Warm mix asphalt additive and preparation method thereof |
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2015
- 2015-01-29 CN CN201510048095.9A patent/CN104559266A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602862A (en) * | 2009-07-01 | 2009-12-16 | 天津大学 | Warm-mixed asphalt additive and preparation method thereof |
| CN102093724A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Warm-mix asphalt additive and preparation method thereof |
| CN102234432A (en) * | 2010-04-28 | 2011-11-09 | 上海益泰能源科技有限公司 | Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application |
| CN103242666A (en) * | 2013-05-23 | 2013-08-14 | 长安大学 | Warm mix asphalt additive and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633947A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Warm-mixed polymer modified asphalt and preparation method thereof |
| CN106633947B (en) * | 2015-11-02 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of warm mix polymer modified asphalt and preparation method thereof |
| WO2018189570A1 (en) * | 2017-04-12 | 2018-10-18 | Quimikao, S.A. De C.V. | Warm mix asphalt compositions as a pavement surface treatment |
| AU2017409195B2 (en) * | 2017-04-12 | 2023-05-11 | Quimikao, S.A. De C.V. | Warm mix asphalt compositions as a pavement surface treatment |
| US11939271B2 (en) | 2017-04-12 | 2024-03-26 | Quimikao, S.A. De C.V. | Warm mix asphalt compositions as pavement surface treatment |
| CN109988431A (en) * | 2019-03-01 | 2019-07-09 | 张燕军 | A kind of medium temperature modified asphalt mixture additive and its preparation and application |
| CN115073064A (en) * | 2022-07-22 | 2022-09-20 | 新乡市通达公路新科技有限公司 | Hot mixing agent for repairing pit and groove |
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Application publication date: 20150429 |