CN106009724B - A kind of modifying regenerant and preparation method and application - Google Patents
A kind of modifying regenerant and preparation method and application Download PDFInfo
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- CN106009724B CN106009724B CN201610440105.8A CN201610440105A CN106009724B CN 106009724 B CN106009724 B CN 106009724B CN 201610440105 A CN201610440105 A CN 201610440105A CN 106009724 B CN106009724 B CN 106009724B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a kind of modifying regenerant and preparation method and application, the regenerative agent includes following component：Plant asphalt, modifying agent, emulsifying agent and age resister；Preparation method is included plant asphalt heating stirring, adds modifying agent, after stirring cooling, adds emulsifying agent and age resister continues to stir, that is, modifying regenerant is made.Advantage can effectively lift the pavement performance of hot recycling modified asphalt mixture for the modifying regenerant of the present invention, recover aging SBS modified pitch, and economic and environment-friendly, pollution-free；Meanwhile the preparation method is simple, greatly reduces production cost；In addition, obtained modifying regenerant is applicable in the maintenance project of highway upper layer, the popularization for hot in-place recycling is significant.
Description
Technical field
The invention belongs to asphalt-regenerating technical field, more particularly to a kind of modifying regenerant and preparation method and application.
Background technology
Asphalt surface hot reproduction technology is increasingly valued by people.It is hardened after ageing of asphalt, viscosity increases, performance declines
Move back, therefore when carrying out regeneration to old material, aged asphalt need to be regenerated, aged asphalt is regained suitable stick
Degree and performance.At present, the renovation process both at home and abroad on aged asphalt mainly has two kinds：First, when old material volume is no more than 30%
When, typically reconciled using softer new pitch, i.e., the high-temperature behavior grade of new pitch is than designing asphalt performance grade
A low grade；Second, when old material volume is higher, then tend to use regenerative agent, therefore regenerative agent turns into asphalt pavement regeneration
The key technology utilized.
Existing regenerative agent is researched and developed primarily directed to the aging in matrix pitch, more using the light oil in petroleum industry as
It is main, in practice it has proved that although it can recover the performance of aging plain asphalt, its less stable, Er Qie to a certain extent
Effect is poorly efficient in terms of the performance recovery of aging polymer modified asphalt, and the aging of polymer modified asphalt not only includes asphalt component
Migration, while be accompanied by the cracking and failure of modifying agent.China's highway upper layer generally uses SBS modified pitch,
Research shows that the excellent performance of SBS modified pitch derives from the friendship for tending to continuous phase that SBS polymer is formed in matrix pitch
Join network structure, and regenerative agent is free of SBS polymer, does not possess the function of repairing SBS polymer network structure, therefore, it is difficult to true
Just realizing the aging regeneration of SBS modified pitch.The existing regenerative agent added at present in China's Modified Bitumen Pavement hot recycling, can only
Play a part of reducing aged asphalt viscosity and lifting construction workability, the lifting effect to aged asphalt and regenerating mixture performance
Fruit and unobvious, cause the high-temperature stability of regenerated road surface to reduce on the contrary.Easily produce rut disease.Therefore hot recycling is constrained
Development of the technology in Highway Maintenance.And the product after being refined because current regenerative agent is that oil is multiple, thus valency
Lattice are expensive.Therefore seek to research and develop reasonable price, environmental protection and can effectively recover aging SBS performance of modified bitumen, lifting regeneration is mixed
The New Regenerated agent for closing material pavement performance is necessary.
The content of the invention
Goal of the invention：The first object of the present invention, which is to provide one kind, can effectively recover aging SBS modified pitch, lifting heat
Reclaimed asphalt mixture pavement performance, and cheap environmentally friendly modifying regenerant；The second object of the present invention is to provide this again
The preparation method of raw agent；The third object of the present invention is to provide the application of the modifying regenerant.
Technical scheme：The modifying regenerant of the present invention, including following component：70~80 parts of plant asphalt, modifying agent 15~
0.5~1 part of 25 parts, 1~5 part of emulsifying agent and age resister.Preferably, 72~75 parts of plant asphalt, 20~30 parts of modifying agent,
0.5~0.8 part of 4.2~4.5 parts of emulsifying agent and age resister.
The plant asphalt that the present invention uses promotes plant sugar alcohol molecule by biofermentation and HTHP hydrogenation process
Between there is cyclodehydration into saturation chain or slightly aggregate into long-chain, there is natural molecular polarity, with SBS modified pitch with
SBS modified pitch has good similar compatibility.
The modifying agent that the present invention uses preferably can be SBR latex or VAE emulsions, wherein, SBR latex is by SBR butylbenzene
Rubber has good compatibility through anionic polymer dispersion made from emulsion copolymerization, SBR latex with plant asphalt, and
Stability is good, can improve the response to temperature and viscoplasticity of plant asphalt；VAE emulsions be acetic acid second it is dilute-ethylene copolymerization emulsions, its
Not only there is good compatibility with pitch, and have good dispersiveness in pitch, can be effectively improved high temperature performance of asphalt,
Low temperature flexibility, anti-aging and durability.
The emulsifying agent that the present invention uses preferably can be fatty alcohol and ethylene oxide condensate, polyoxyethylene carboxylate or pungent
Base phenol polyethenoxy ether, wherein, fatty alcohol and ethylene oxide condensate can be effectively improved the glutinous of plant asphalt and SBR latex
Degree so that be in flow regime under regenerative agent normal temperature, can be used to construct without heating；Polyoxyethylene carboxylate has good
Emulsification, solubilising, wetting, peptizaiton, enable to plant asphalt further to be fused with modifying agent and improve the viscosity of mixed liquor；
OPEO has good emulsifiability, enables to abundant diffusion of the modifying agent in plant asphalt and effective
Improve the viscosity of regenerative agent.
The preparation method of modifying regenerant of the present invention comprises the steps of：In parts by weight weigh plant asphalt, modifying agent,
Emulsifying agent and age resister, by plant asphalt be heated to 70~80 DEG C stirring 5~10min, add modifying agent, stirring 30~
60min, when being cooled to 50~60 DEG C, add emulsifying agent and age resister continues 20~40min of stirring, that is, modification regeneration is made
Agent.
Plant asphalt is heated to 70~80 DEG C and enables to the plant asphalt to have good mobility by the present invention, is improved
The high-temperature behavior of regenerative agent, if heating-up temperature is less than 70 DEG C, it can make it that the dynamic viscosity of plant asphalt is too high, plant asphalt mistake
It is viscous, it is unfavorable for fully fused between plant asphalt and modifying agent；If heating-up temperature is higher than 80 DEG C, plant asphalt can be caused
Dynamic viscosity is too small, and plant asphalt mobility is too high, reduces the high-temperature behavior of regenerative agent.
Similarly, the present invention adds emulsifying agent and age resister at 50~60 DEG C, it is possible to increase emulsifying agent and age resister
Dispersibility in mixed solution, and fully reduce the viscosity of mixed liquor.
The modifying regenerant of the present invention is applied in the maintenance project of highway upper layer.
Beneficial effect：Compared with prior art, its remarkable advantage is that regenerative agent produced by the present invention can effectively lift heat
The pavement performance of regeneration modified asphalt compound, recover aging SBS modified pitch, and it is economic and environment-friendly, it is pollution-free；The present invention one
Aspect is by adding plant asphalt, i.e. product after maize straw processing extraction into modifying regenerant, because its viscosity is appropriate,
Therefore, aged asphalt can not only be softened, reduce aged asphalt viscosity, lifting construction workability, and its environmental protection, to environment without dirt
Dye；On the other hand using SBR latex as modifying agent, it can not only significantly improve the low temperature resistance of aging SBS modified pitch
Shape ability, the response to temperature and viscoplasticity for improving aging SBS modified pitch, and also have between SBR latex and plant asphalt very well
Compatibility, the two can form cross-linked structure, strengthen stability；Meanwhile the regenerative agent preparation method in the present invention is simple, greatly
Big to reduce production cost, and good product quality, qualification rate is high；In addition, modifying regenerant prepared by the present invention is applicable to
In the maintenance project of highway upper layer, the popularization for hot in-place recycling is significant.
Embodiment
Technical scheme is described further below.
Embodiment 1
Raw material：4.2 parts of 75 parts of plant asphalt, 20 parts of SBR latex, fatty alcohol and ethylene oxide condensate, 2,6- three-level fourths
0.8 part of base -4- methylphenols.The raw material that the present invention uses is commercially available to be obtained.
Method：Plant asphalt is added in stirred tank, 80 DEG C of stirrings is heated to, stirs 5min, add SBR latex, stir
60min is mixed, is uniformly mixed, when kettle to be mixed is cooled to 60 DEG C, adds fatty alcohol and ethylene oxide condensate and 2,6- tri-
Level butyl -4- methylphenols continue to stir 20min, are cooled to the liquefied mixture that normal temperature obtains and modifying regenerant is made.
Modifying regenerant made from embodiment 1 is subjected to indoor regenerability experiment, the performance test results such as table 1 of acquisition
It is shown.
The regenerative agent regenerability result of table 1
As shown in Table 1, regenerative agent provided by the invention significantly improves the viscoplasticity of aging SBS modified pitch, especially
The high and low temperature performance recovery of aging SBS modified pitch has been arrived the degree suitable with new SBS modified pitch, further illustrate
The regenerative agent of the present invention is used for the validity of aging SBS modified pitch.
Embodiment 2
Raw material：72 parts of plant asphalt, 30 parts of VAE emulsions, 4.5 parts of polyoxyethylene carboxylate, double (3,5- three-level butyl-
4- hydroxy phenyls) 0.5 part of thioether.
Method：Plant asphalt is added in stirred tank, 70 DEG C of stirrings is heated to, stirs 10min, add VAE emulsions, stir
30min is mixed, is uniformly mixed, when kettle to be mixed is cooled to 50 DEG C, adds polyoxyethylene carboxylate and double (3,5- three-level fourths
Base -4- hydroxy phenyls) thioether continues to stir 40min, it is cooled to the i.e. obtained modifying regenerant of liquefied mixture that normal temperature obtains.
Modifying regenerant made from embodiment 2 is subjected to indoor regenerability experiment, the performance test results such as table 2 of acquisition
It is shown.
The regenerative agent regenerability result of table 2
As shown in Table 2, regenerative agent provided by the invention significantly improves the viscoplasticity of aging SBS modified pitch, especially
The high and low temperature performance recovery of aging SBS modified pitch has been arrived the degree suitable with new SBS modified pitch, further illustrate
The regenerative agent of the present invention is used for the validity of aging SBS modified pitch.
Embodiment 3
Basic step is same as Example 1, and difference is that emulsifying agent uses OPEO, age resister
Using four (β-(3,5- three-level butyl -4- hydroxy phenyls) propionic acid) pentaerythritol esters.
Embodiment 4
Basic step is same as Example 1, and difference is：65 parts of plant asphalt, 10 parts of SBR latex, fatty alcohol with
0.5 part of ethylene oxide condensate, 0.3 part of age resister, wherein, age resister includes 2,6- three-level butyl -4- methylphenols, double
(3,5- three-level butyl -4- hydroxy phenyls) thioether and four (β-(3,5- three-level butyl -4- hydroxy phenyls) propionic acid) pentaerythritol esters.
Embodiment 5
Basic step is same as Example 4, and difference is：70 parts of plant asphalt, 25 parts of SBR latex, fatty alcohol with
5 parts of ethylene oxide condensate, 0.5 part of age resister.
Embodiment 6
Basic step is same as Example 4, and difference is：80 parts of plant asphalt, 15 parts of SBR latex, fatty alcohol with
1 part of ethylene oxide condensate, 1 part of age resister.
Embodiment 7
Basic step is same as Example 4, and difference is：85 parts of plant asphalt, 30 parts of SBR latex, fatty alcohol with
8 parts of ethylene oxide condensate, 2 parts of age resister.
Modifying regenerant made from embodiment 4-7 is subjected to indoor regenerability experiment, the performance test results of acquisition are such as
Shown in table 3.
Regenerative agent regenerability result made from the different material content of table 3
As shown in Table 3, the combination property of modifying regenerant prepared by embodiment 5 and 6 is optimal, and the plant asphalt of embodiment 4 contains
Measure relatively low, be unfavorable for the high temperatures of product to the bating effect of pitch clearly；And embodiment 7SBR latex contents are higher,
This make it that the viscosity of product is very high, is unfavorable for product and is used for site operation.
Each raw material cited by the present invention can realize the present invention, and the bound value of each raw material, interval value can
Realize the present invention；It is numerous to list herein；For those skilled in the art, the present invention can have various modifications and change
Change, all any modifications, equivalent substitution, improvement etc. made in the spirit and principles in the present invention, all should be in the protection of the present invention
Scope.
Claims (6)
- A kind of 1. modifying regenerant, it is characterised in that count in parts by weight, including following component：70~80 parts of plant asphalt, change Property 0.5~1 part of 10~30 parts of agent, 1~5 part of emulsifying agent and age resister, wherein, modifying agent is SBR latex or VAE emulsions.
- 2. modifying regenerant according to claim 1, it is characterised in that：72~75 parts of the plant asphalt, modifying agent 20 0.5~0.8 part of~25 parts, 4.2~4.5 parts of emulsifying agent and age resister.
- 3. modifying regenerant according to claim 1, it is characterised in that：The emulsifying agent is that fatty alcohol contracts with oxirane Compound, polyoxyethylene carboxylate or OPEO.
- 4. modifying regenerant according to claim 1, it is characterised in that：The age resister comprises at least 2,6- three-level fourths Base -4- methylphenols, double (3,5- three-level butyl -4- hydroxy phenyls) thioethers or four (β-(3,5- three-level butyl -4- hydroxy phenyls) Propionic acid) one kind in pentaerythritol ester.
- A kind of 5. method for preparing the modifying regenerant described in claim 1, it is characterised in that comprise the following steps：By weight Number weighs plant asphalt, modifying agent, emulsifying agent and age resisters, by plant asphalt be heated to 70~80 DEG C of stirrings 5~ 10min, modifying agent is added, stir 30~60min, when being cooled to 50~60 DEG C, added emulsifying agent and age resister continues to stir 20~40min is mixed, that is, modifying regenerant is made.
- 6. modifying regenerant according to claim 1 application in the maintenance project of surface layer on a highway.
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| CN201610440105.8A CN106009724B (en) | 2016-06-17 | 2016-06-17 | A kind of modifying regenerant and preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107033386B (en) * | 2017-04-14 | 2019-06-14 | 长安大学 | Nanometer iron powder raising pitch is anti-aging or restores the application of road surface heavy metal ion |
| CN109704651B (en) * | 2019-01-26 | 2021-04-27 | 上海宝新特种沥青混凝土有限公司 | Asphalt mixture and preparation method thereof |
| CN110669345B (en) * | 2019-09-30 | 2022-05-24 | 山西省交通科技研发有限公司 | Slow-release asphalt modified regenerant and preparation method thereof |
| CN110982290B (en) * | 2019-12-20 | 2021-08-24 | 河南交通职业技术学院 | Aged asphalt regenerant and preparation method thereof |
| CN112094505B (en) * | 2020-11-04 | 2021-06-11 | 佛山市交通科技有限公司 | SBS modified asphalt regenerant and preparation method thereof |
| CN115746573B (en) * | 2022-10-27 | 2023-11-14 | 河海大学 | Efficient performance recovery agent for aged SBS modified asphalt in RAP and preparation method thereof |
| CN116041969A (en) * | 2023-01-09 | 2023-05-02 | 广东交科技术研发有限公司 | Asphalt recycling agent and preparation method and application thereof |
| CN117466575B (en) * | 2023-12-28 | 2024-03-19 | 水润天府新材料有限公司 | Preparation method of low-carbon recycling modified asphalt mixture |
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| CN101624475A (en) * | 2009-08-14 | 2010-01-13 | 北京玖威信达技术有限公司 | Cold regeneration modified asphalt |
| CN103360772B (en) * | 2012-04-06 | 2015-06-17 | 石城祥 | Regeneration activator for old asphalt mixture of high type asphalt pavement |
| CN104403336B (en) * | 2014-11-29 | 2017-01-11 | 乌鲁木齐市城市综合交通项目研究中心 | Method for preparing plant asphalt-based road surface reclaiming agent |
| CN104610768B (en) * | 2015-01-26 | 2017-04-12 | 江苏苏博特新材料股份有限公司 | Asphalt regeneration agent as well as preparation method and application thereof |
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Effective date of registration: 20200612 Address after: 214044 Jiangsu city of Wuxi province Lai Sun Road No. 108 Patentee after: WUXI CITY ROAD AND BRIDGE TECHNOLOGY Co.,Ltd. Address before: Four pailou Nanjing Xuanwu District of Jiangsu Province, No. 2 210096 Patentee before: SOUTHEAST University |
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