CN104559237A - Non-ionic liquid crystal asphalt warm mixing agent and preparation method thereof - Google Patents
Non-ionic liquid crystal asphalt warm mixing agent and preparation method thereof Download PDFInfo
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- CN104559237A CN104559237A CN201310496048.1A CN201310496048A CN104559237A CN 104559237 A CN104559237 A CN 104559237A CN 201310496048 A CN201310496048 A CN 201310496048A CN 104559237 A CN104559237 A CN 104559237A
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Abstract
The invention discloses a non-ionic liquid crystal asphalt warm mixing agent and a preparation method thereof. The asphalt warm mixing agent comprises the following components in parts by weight: 3.5-55.5 parts of polyglycerol fatty acid ester, 0.1-20 parts of fatty alcohol and 24.5-96.4 parts of water. The preparation method comprises the following steps: (1) uniformly mixing water and polyglycerol fatty acid ester in a container according to the ratio; (2) adding fatty alcohol into the mixture obtained in the step (1) for uniform mixing, and leaving the mixture to stand for a period of time to obtain the non-ionic liquid crystal asphalt warm mixing agent. The non-ionic liquid crystal asphalt warm mixing agent disclosed by the invention can effectively reduce the high-temperature viscosity of asphalt and has the advantages of stable performance, available raw material, simple and convenient preparation method, wide application range and the like.
Description
Technical field
The present invention relates to a kind of asphalt warm-mix agent and preparation method thereof, particularly relate to a kind of nonionic liquid crystal type asphalt warm-mix agent and preparation method thereof.
Background technology
Since asphalt applications is since road, full-fledged asphalt is mainly hot-mix asphalt mixture, but hot-mix asphalt mixture exist mix and stir temperature and mat formation that temperature is high, harmful gas emission is high, the asphalt easily defect such as aging, cause many Ecological and environmental problems.Warm-Mix Bitumen Mixture is a kind of novel material of environmental protection and energy saving, it has even more excellent pavement performance consistent with corresponding hot-mix asphalt mixture, but can mix and stir at lower temperatures and mat formation, greatly reduce energy consumption in process of production and soot emissions, economic benefit and the ecological value are significantly improved.Compared with hot-mix asphalt mixture, according to mix type, the mixing and stirring temperature and generally can reduce by 15 DEG C-40 DEG C of different Warm-Mix Bitumen Mixture, some problems adopting Warm-Mix Bitumen Mixture can alleviate hot-mix asphalt mixture well to cause because high temperature mixes and stirs.
At present by adding zeolite, organic viscosity reduction additive, surfactivity warm-mixing agent or adopt each class methods such as soft or hard pitch combines to mix and stir temperature to the construction reducing compound in compound, these compounds all can be referred to as Warm-Mix Bitumen Mixture.Compared with hot-mix asphalt mixture, according to mix type, the mixing and stirring temperature and generally can reduce by 15 ~ 40 DEG C of different Warm-Mix Bitumen Mixture, the Railway Project adopting Warm-Mix Bitumen Mixture can alleviate hot-mix asphalt mixture well to cause because high temperature mixes and stirs:
Organic additive is by the advantage of self fusing point lower (about 100 DEG C), chemically angle changes the viscosity-temperature curve of pitch, thus reduce pitch and building stones mix and stir temperature, but namely 60 DEG C of viscosity that this method also can reduce pitch usually reduce the high-temperature stability of compound; Adopt the emulsified bitumen that solid content is higher, mix and stir with building stones at 80 ~ 120 DEG C of temperature, also can realize warm mix, which is low compared with the temperature of hot asphalt about 30 ~ 50 DEG C; Zeolites product be all by mix and stir in process at asphalt introduce moisture make pitch produce foam thus reduce asphalt viscosity, realize the reduction of bituminous mixture temperature.But inevitably have some moisture entrapment in process of production between pitch and aggregate Interface, make asphalt there is potential Moisture Damage.If amount of water is excessive, then can produce a large amount of water vapour or cause bumping, if the water yield is very few, then foaming effect is bad.
At present, the domestic warm-mixed asphalt additive product researched and developed voluntarily is mainly organic and surfactivity class, as publication CN102093731A, patent CN102408602A, patent CN101899218A, patent CN101831187A, patent CNl02795801A etc., although the warm-mixed asphalt additive product of domestic research and development can reach the cooling-down effect of same kind of products at abroad substantially, and can successfully production Warm-Mix Bitumen Mixture, but also inevitably all exist complex manufacturing, energy consumption high, reduce the defects such as performance of asphalt mixture.
Summary of the invention
The invention provides a kind of nonionic liquid crystal type asphalt warm-mix agent and preparation method thereof.Asphalt warm-mix agent of the present invention effectively can reduce the high temperature viscosity of pitch, and has stable performance, the advantages such as raw material easily gathers, and preparation method is easy and have wide range of applications.
Nonionic liquid crystal type asphalt warm-mix agent of the present invention, comprises with parts by weight:
Polyglycerol fatty acid ester: 3.5 ~ 55.5 parts, preferably 5 ~ 45 parts;
Fatty alcohol: 0.1 ~ 20 part, preferably 1 ~ 10 part;
Water: 24.5 ~ 96.4 parts, preferably 45 ~ 94 parts.
Described polyglycerol fatty acid ester be selected from the pungent decylate of Polyglycerine, polyglyceryl laurate, the pungent capric acid lactate of Polyglycerine, Polyglycerine lauric acid lactate, polyglycerol lactate, Polyglycerine acetic ester, polyglycerol monooleate, Polyglycerine succinic acid laurate, Polyglycerine succinate or Polyglycerine citrate one or more.
Described fatty alcohol be selected from n-Octanol, 2-Ethylhexyl Alcohol, nonanol-(1 nonyl alcohol), nonylcarbinol (1-decanol), positive undecyl alcohol, lauryl alcohol (dodecanol), hexadecanol (cetyl alcohol) or stearyl alcohol one or more.
In nonionic liquid crystal type asphalt warm-mix agent of the present invention, also can need to add other additive according to practical application, as oxide compounds such as dispersion agent, antistripping agent, whipping agent, antiaging agent, polymer modifiers and magnesium oxide, calcium oxide and Vanadium Pentoxide in FLAKESs, the add-on of additive accounts for 0.1% ~ 9.9% of warm-mixing agent weight, and each component concentration sum of asphalt warm-mix agent is 100%.
The preparation method of nonionic liquid crystal type asphalt warm-mix agent of the present invention, comprises following content:
(1) by proportioning, water and polyglycerol fatty acid ester are mixed in a reservoir;
(2) fatty alcohol is joined in step (1) material, mix, leave standstill for some time, obtain nonionic liquid crystal type asphalt warm-mix agent.
Wherein, the mixing temperature of step (1) is 40 ~ 60 DEG C, and mixing time is 0.5 ~ 2 hour; The mixing temperature of step (2) is 40-60 DEG C, and mixing time is 0.5 ~ 1 hour; Time of repose is 1 ~ 4 hour.
The application of nonionic liquid crystal type asphalt warm-mix agent of the present invention in asphalt mixes and stirs, comprises following content: by building stones, pitch and asphalt warm-mix agent uniform mixing, then add breeze or Machine-made Sand, uniform mixing; Wherein mixing and stirring temperature is 110 ~ 120 DEG C, and non-ionic type asphalt warm-mix agent adds according to the 2wt ~ 10wt% of asphalt content.
Asphalt warm-mix agent of the present invention also can mix prior to pitch, obtains warm-mixed asphalt, and then warm-mixed asphalt is directly used in asphalt preparation.Wherein said warm-mixed asphalt, by weight part meter, comprise pitch 100 parts, asphalt warm-mix agent is 1 ~ 10 part, preferably 2 ~ 8 parts.Wherein said pitch is bi tumenf orr oad, polymer modified asphalt etc., as No. 70, No. 90, No. 110 pitches etc.
Nonionic liquid crystal type asphalt warm-mix agent of the present invention compares with traditional asphalt warm-mixing agent, has the following advantages:
(1), in nonionic liquid crystal type asphalt warm-mix agent of the present invention, polyglycerol fatty acid ester and fatty alcohol are gentle nonionic surface active agent, little to the pungency of human body, environmental friendliness, environmental protection.
(2) nonionic liquid crystal type asphalt warm-mix agent of the present invention, there is layered liquid crystal structure, dispersion effect is good, good stability, the surfactivity of pitch can be reduced greatly, stable emulsion is formed with pitch, simultaneously in liquid crystal structure, reactive force is between layers more weak, under the effect of external force, slide than being easier to, thus there is good " lubrication " performance, under these two kinds effects, asphalt warm-mix agent of the present invention greatly can reduce the high temperature viscosity of pitch, therefore mixing and stirring of asphalt can be reduced, pave and compacting temperature, the discharge of a large amount of minimizing smog and objectionable impurities, reduce harm and environmental pollution.
(3) nonionic liquid crystal type asphalt warm-mix agent of the present invention, there is layered liquid crystal structure and want high a lot of compared to the viscosity of common tensio-active agent, therefore, while reduction asphalt high-temperature viscosity, its 60 DEG C of viscosity can not be reduced, thus the anti-rut behavior of pitch can not be reduced.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention.
Embodiment 1
Polyglyceryl laurate: 12 parts
Lauryl alcohol: 2.5 parts
Water: 84.5 parts.
By proportioning, polyglyceryl laurate and deionized water are added container, stir 1 hour at 40 DEG C; Add lauryl alcohol, constant temperature 40 DEG C stirs 1 hour, and left at room temperature 3 hours, obtains nonionic liquid crystal type asphalt warm-mix agent.
Embodiment 2
Polyglycerol monooleate: 30 parts
Stearyl alcohol: 1.7 parts
Water: 68.3 parts.
By proportioning, polyglycerol monooleate and deionized water are added container, stir 1 hour at 50 DEG C; Add stearyl alcohol, constant temperature 50 DEG C stirs 1.5 hours, and left at room temperature 3.5 hours, obtains nonionic liquid crystal type asphalt warm-mix agent.
Embodiment 3
Polyglyceryl laurate: 41 parts
N-Octanol: 2.5 parts
Water: 56.5 parts.
By proportioning, polyglyceryl laurate and deionized water are added container, stir 1 hour at 60 DEG C; Add n-Octanol, constant temperature 60 DEG C stirs 1.5 hours, and left at room temperature 4 hours, obtains nonionic liquid crystal type asphalt warm-mix agent.
Embodiment 4
Polyglycerine citrate: 23 parts
Hexadecanol: 2.8 parts
Water: 74.2 parts.
By proportioning, Polyglycerine citrate and deionized water are added container, stir 1 hour at 45 DEG C; Add hexadecanol, constant temperature 45 DEG C stirs 1 hour, and left at room temperature 3 hours, obtains nonionic liquid crystal type asphalt warm-mix agent.
Comparative example 1
Polyglyceryl laurate: 30.5 parts
Water: 69.5 parts.
By proportioning, polyglyceryl laurate and deionized water are added container, stir 1.5 hours at 50 DEG C; Left at room temperature 3 hours, obtains nonionic liquid crystal type asphalt warm-mix agent.
Comparative example 1
Stearyl alcohol: 9.5 parts
Water: 90.5 parts.
By proportioning, stearyl alcohol and deionized water are added container, stir 1.5 hours at 40 DEG C; Left at room temperature 2 hours, obtains non-ionic type asphalt warm-mix agent.
The warm mix mode that the method specified according to " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) adopts traditional heat to mix mode and application additive of the present invention respectively carries out mixing and stirring of asphalt, and carries out performance of asphalt mixture test.Wherein, by the warm-mixed asphalt additive of preparation in embodiment 1,2,3,4 and comparative example 1,2 according to the 2wt% ~ 7wt% of asphalt content, add in asphalt in the mode of spraying, be prepared into compound test specimen 1
#, 2
#, 3
#, 4
#, 5
#, 6
#.This test adopts 90#A level pitch, and bitumen aggregate ratio is 5.5%, and the grating of building stones is in table 1, and performance of asphalt mixture test result is in table 2.
Table 1 building stones grating.
Table 2 performance of asphalt mixture test result.
From table 2, the compacting temperature that mixes and stirs of asphalt can be reduced by more than 20 DEG C by warm-mixed asphalt additive of the present invention under the prerequisite not affecting performance of asphalt mixture, can be widely used in the asphalt construction of various climatological region.Property indices all meets the requirement of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
The above is only preferred embodiment of the present invention, not imposes any restrictions the present invention.Every above embodiment is done according to invention technical spirit any simple modification, change and equivalence change, all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. a nonionic liquid crystal type asphalt warm-mix agent, is characterized in that: comprise with parts by weight:
Polyglycerol fatty acid ester: 3.5 ~ 55.5 parts;
Fatty alcohol: 0.1 ~ 20 part;
Water: 24.5 ~ 96.4 parts.
2. according to asphalt warm-mix agent according to claim 1, it is characterized in that: comprise with parts by weight:
Polyglycerol fatty acid ester: 5 ~ 45 parts;
Fatty alcohol: 1 ~ 10 part;
Water: 45 ~ 94 parts.
3., according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described polyglycerol fatty acid ester be selected from the pungent decylate of Polyglycerine, polyglyceryl laurate, the pungent capric acid lactate of Polyglycerine, Polyglycerine lauric acid lactate, polyglycerol lactate, Polyglycerine acetic ester, polyglycerol monooleate, Polyglycerine succinic acid laurate, Polyglycerine succinate or Polyglycerine citrate one or more.
4., according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described fatty alcohol be selected from n-Octanol, 2-Ethylhexyl Alcohol, nonanol-, nonylcarbinol, positive undecyl alcohol, lauryl alcohol, hexadecanol or stearyl alcohol one or more.
5. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: add dispersion agent, antistripping agent, whipping agent, antiaging agent, polymer modifiers and magnesium oxide, calcium oxide and Vanadium Pentoxide in FLAKES in asphalt warm-mix agent, the add-on of additive accounts for 0.1% ~ 9.9% of warm-mixing agent weight.
6. a preparation method for asphalt warm-mix agent according to claim 1, is characterized in that: comprise following content: water and polyglycerol fatty acid ester mix by proportioning by (1) in a reservoir; (2) fatty alcohol is joined in step (1) material, mix, leave standstill for some time, obtain nonionic liquid crystal type asphalt warm-mix agent.
7. in accordance with the method for claim 6, it is characterized in that: the mixing temperature of step (1) is 40 ~ 60 DEG C, and mixing time is 0.5 ~ 2 hour; The mixing temperature of step (2) is 40-60 DEG C, and mixing time is 0.5 ~ 1 hour.
8. in accordance with the method for claim 6, it is characterized in that: the time of repose in step (2) is 1 ~ 4 hour.
9. the application of asphalt warm-mix agent according to claim 1 in asphalt mixes and stirs, is characterized in that comprising following content: by building stones, pitch and asphalt warm-mix agent uniform mixing, then add breeze or Machine-made Sand, uniform mixing; Wherein mixing and stirring temperature is 110 ~ 120 DEG C, and non-ionic type asphalt warm-mix agent adds according to the 2wt ~ 10wt% of asphalt content.
10. the warm-mixed asphalt prepared of asphalt warm-mix agent according to claim 1, is characterized in that: part meter by weight, comprising: pitch 100 parts, asphalt warm-mix agent is 1 ~ 10 part.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107266918A (en) * | 2017-06-28 | 2017-10-20 | 常州市雄图纺织有限公司 | A kind of asphalt warm-mix agent and preparation method thereof |
| CN107501969A (en) * | 2017-10-10 | 2017-12-22 | 唐林元 | One kind foaming viscosity reduction type warm-mixing agent and preparation method thereof |
| EP3502215A1 (en) * | 2017-12-21 | 2019-06-26 | Horst Kief | Reduction of pollutant emissions from combustion engines |
| CN111423705A (en) * | 2020-04-09 | 2020-07-17 | 苏州丰倍生物科技有限公司 | Environment-friendly asphalt modifier and preparation method and application thereof |
| WO2020233768A1 (en) * | 2019-05-17 | 2020-11-26 | Lapide Gmbh | Reduction of pollutant emissions of internal combustion engines |
| CN113136087A (en) * | 2021-05-14 | 2021-07-20 | 常州利尔德通新材料科技有限公司 | High-viscosity-reduction warm mixing agent for warm-mixed asphalt |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| EP3502215A1 (en) * | 2017-12-21 | 2019-06-26 | Horst Kief | Reduction of pollutant emissions from combustion engines |
| WO2020233768A1 (en) * | 2019-05-17 | 2020-11-26 | Lapide Gmbh | Reduction of pollutant emissions of internal combustion engines |
| CN113874477A (en) * | 2019-05-17 | 2021-12-31 | 索斯滕·基夫 | Reduction of harmful emissions from internal combustion engines |
| CN111423705A (en) * | 2020-04-09 | 2020-07-17 | 苏州丰倍生物科技有限公司 | Environment-friendly asphalt modifier and preparation method and application thereof |
| CN113136087A (en) * | 2021-05-14 | 2021-07-20 | 常州利尔德通新材料科技有限公司 | High-viscosity-reduction warm mixing agent for warm-mixed asphalt |
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| CN104559237B (en) | 2017-01-25 |
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