CN109593374A - A kind of hydraulic asphalt and preparation method thereof - Google Patents
A kind of hydraulic asphalt and preparation method thereof Download PDFInfo
- Publication number
- CN109593374A CN109593374A CN201811475775.9A CN201811475775A CN109593374A CN 109593374 A CN109593374 A CN 109593374A CN 201811475775 A CN201811475775 A CN 201811475775A CN 109593374 A CN109593374 A CN 109593374A
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- China
- Prior art keywords
- modifying agent
- hydraulic
- asphalt
- agent
- hydraulic asphalt
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention provides a kind of hydraulic asphalts, are prepared by following components: the bi tumenf orr oad of 100wt%, the SBS modifier of 1~3wt%, the SBR modifying agent of 1~3wt%, the aromatic naphtha of 2~6wt%, the crosslinking agent of 0.2~0.3wt%, the PPA modifying agent of 0.1~0.5wt%.In hydraulic asphalt provided by the present application, SBS modifier, SBR modifying agent and PPA modifying agent can improve high-temperature behavior and cryogenic property, aromatic naphtha increases the compatibility between basic material and modifying agent, crosslinking agent makes between modifying agent and modifying agent, vulcanization reaction occurs between modifying agent and basic material, form space net structure, stability after increasing its dispersion, thus said components cooperate so that hydraulic asphalt comprehensive performance is preferable, and indices meet the technical requirements of hydraulic and hydroelectric engineering and chemical field.
Description
Technical field
The present invention relates to Petroleum Processing Technology fields more particularly to a kind of hydraulic asphalt and preparation method thereof.
Background technique
Hydraulic asphalt, as the term suggests i.e. applied to the asphalt of hydraulic engineering.Pitch for reservoir dam, sea wall and
Anti-seepage of channels etc. has longer history and practical experience.
Bituminous concrete infiltration coefficient is generally 10-10-10-7Cm/s is better than reinforced cement concrete, and and reinforced concrete
Soil is compared, bituminous concrete low cost, is had preferable plasticity and flexibility, is adapted to the differential settlement and change of hydraulic structure
Type, in addition, asphalt concrete construction is relatively simple.However, the performance of bituminous concrete and entity building largely by
To the restriction of asphalt material nature, and hydraulic structure generally belongs to the more heavy construction of investment, to its safety, can
There is strict demand by the service life, therefore, Hydraulic Engineering need to be selected strictly with asphalt, it is necessary to have good Temperature Susceptibility
Energy, cohesive force, anti-cracking performance and ageing-resistant performance.On January 1st, 2008, petrochemical industry standard " water conservancy project asphalt "
It comes into effect, therefore, exploitation meets the high-quality hydraulic asphalt of professional standard, to promotion China's hydraulic anti-seepage technology, hydraulic engineering
Cause is of great significance.
Summary of the invention
Present invention solves the technical problem that being to provide a kind of hydraulic asphalt, the indices of the hydraulic asphalt meet water conservancy project
The technical standard of power industry.
In view of this, being prepared this application provides a kind of hydraulic asphalt by following components:
Preferably, the bi tumenf orr oad is No. 70 A grades of heavy traffic paving asphalts or No. 90 A grades of heavy traffic paving asphalts.
Preferably, the SBS modifier is the linear SBS modifier of YH-791.
Preferably, the content of the SBS modifier is 1~2wt%, and the content of the SBR modifying agent is 1~2wt%.
Preferably, the content of the aromatic naphtha is 3~5.6wt%.
Preferably, the content of the PPA modifying agent is 0.2~0.4wt%.
Present invention also provides a kind of preparation methods of hydraulic asphalt, comprising the following steps:
It is modified with the SBR of the SBS modifier of 1~3wt%, 1~3wt% after the bi tumenf orr oad of 100wt% is melted
The mixing of the aromatic naphtha of agent and 2~6wt% obtains asphalt mixture after heating swelling, shearing；
The crosslinking agent of 0.2~0.3wt% and the PPA modifying agent of 0.1~0.5wt% are added in the asphalt mixture,
It is developed after shearing, obtains hydraulic asphalt.
Preferably, the temperature of the fusing is 138~150 DEG C.
Preferably, in the step of obtaining asphalt mixture, the temperature of the heating swelling is 165~185 DEG C, shearing
Time is 0.5~1h.
Preferably, in the step of obtaining hydraulic asphalt, the time of the shearing is 0.5~1h, the time of the development
For 1~3h.
This application provides a kind of hydraulic asphalt, by bi tumenf orr oad, SBS modifier, SBR modifying agent, aromatic naphtha,
Crosslinking agent and PPA modifying agent are prepared；Wherein, SBS modifier has good high temperature resistant, anti-seismic design, improves drip
Green low temperature brittle point index；SBR modifying agent has good anti-seismic design, hence it is evident that improves the low temperature brittle point index of pitch；
PPA modifying agent can improve the high-temperature behavior and anti-aging property of hydraulic asphalt, especially have to the cryogenic property after improvement aging
Positive effect；Crosslinking agent makes between modifying agent and modifying agent, vulcanization occurs instead between modifying agent and basic bi tumenf orr oad
It answers, forms space net structure, the stability after increasing its dispersion；Therefore, hydraulic asphalt provided by the present application passes through in addition
It states component and acts synergistically, finally make the excellent combination property of hydraulic asphalt, meet water conservancy project power industry DL/5363-2006
Technical requirements.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
For the demand of hydraulic asphalt in the prior art, this application provides a kind of hydraulic asphalts, pass through addition road
Asphalt, SBS modifier, SBR modifying agent, aromatic naphtha, crosslinking agent and PPA modifying agent have hydraulic asphalt preferable comprehensive
Performance is closed, the technical requirements of water conservancy project power industry DL/5363-2006 are met.Specifically, the embodiment of the invention discloses a kind of water
Work pitch, is prepared by following components:
In hydraulic asphalt provided by the present application, raw material bi tumenf orr oad selects No. 70 A grades of heavy traffic paving asphalts or No. 90 A grades
Heavy traffic paving asphalt, to ensure the quality of raw material.In this application, the bi tumenf orr oad be base, content 100wt%,
Its adding raw materials is added according to the proportion based on this.
SBS modifier is SBS modifier well known to those skilled in the art, is not limited particularly its source the application
System, exemplary, the SBS modifier is chosen in particular from the linear SBS modifier of YH-791 of Yueyang petrochemical industry in this application.It is described
SBS modifier has good high temperature resistant, anti-seismic design, can improve the low temperature brittle point index of pitch.In this application, described
The content of SBS modifier is 1~3wt%, and in a particular embodiment, the content of the SBS modifier is 1~2wt%.
SBR modifying agent is SBR modifying agent well known to those skilled in the art, is not limited particularly its source the application
System, exemplary, the SBR modifying agent is selected from the SBR modifying agent of the aobvious first chemical industry in Shandong.The SBR modifying agent has anti-well
Low temperature capability can be obviously improved the low temperature brittle point index of pitch.The content of the SBR modifying agent is 1~3wt%, specific
In embodiment, the content of the SBR modifying agent is 1wt%, 2wt% or 3wt%.
Aromatic naphtha is aromatic naphtha well known to those skilled in the art, is not particularly limited to this application.The aromatic hydrocarbons
Oil can increase the compatibility between basic material and modifying agent.The content of the aromatic naphtha is 2~6wt%；In specific embodiment
In, the content of the aromatic naphtha is 3~5.6wt%.
Crosslinking agent makes between modifying agent and modifying agent in the application, and vulcanization reaction occurs between basic asphalt and modifying agent
The metastable space net structure of obtained formation of chemical bond, the stability after increasing dispersion, avoids modifying agent from base
It is separated out after dispersing in plinth pitch by storing for a long time.It mainly include sulfur-containing compound in herein described crosslinking agent, such as:
Sulfur compounded vulcanization accelerator or organic sulfur compound compound vulcanization accelerator.The content of the crosslinking agent is 0.2~0.3wt%.
PPA modifying agent is a kind of modifying agent well known to those skilled in the art, can be commercial product；It is exemplary, institute
State the polyphosphoric acids that PPA modifying agent is market purchasing technical grade 110wt%.The PPA modifying agent can improve hydraulic asphalt
High-temperature behavior and anti-aging property especially have positive effect to the cryogenic property after improvement aging.The PPA modifying agent
Content is 0.1~0.5wt%, and in a particular embodiment, the content of the PPA modifying agent is 0.2~0.4wt%.
Further, present invention also provides the preparation methods of the hydraulic asphalt, comprising the following steps:
It is modified with the SBR of the SBS modifier of 1~3wt%, 1~3wt% after the bi tumenf orr oad of 100wt% is melted
The mixing of the aromatic naphtha of agent and 2~6wt% obtains asphalt mixture after heating swelling, shearing；
The crosslinking agent of 0.2~0.3wt% and the PPA modifying agent of 0.1~0.5wt% are added in the asphalt mixture,
It is developed after shearing, obtains hydraulic asphalt.
During preparing hydraulic asphalt, SBS modifier, SBR modifying agent joined in bi tumenf orr oad first
With aromatic naphtha, so that above two modifying agent is sufficiently swollen in bi tumenf orr oad, and it is uniformly dispersed.In the process,
The temperature of the fusing is 135~150 DEG C, and the temperature of the heating swelling is 165~185 DEG C, and the time is 0.5~1h, shearing
Time be 0.5~1h.
According to the present invention, crosslinking agent and PPA modifying agent are then added in asphalt mixture obtained above, is sent out after shearing
It educates to get hydraulic asphalt is arrived.Crosslinking agent is added in the process and PPA modifying agent may make scattered modifying agent and basic road
Road asphalt crosslinks reaction, forms the dispersion of stable and uniform.The time of the shearing is 0.5~1h, the hair
The time educated is 1~3h.
In this application, it is cross-linked into modifying agent in advance if crosslinking agent is added together with modifying agent, bi tumenf orr oad
Bigger molecular structure can not be uniformly dispersed, and influence the stability of hydraulic asphalt.
According to the above description, hydraulic asphalt provided by the present application is modified by bi tumenf orr oad, SBS modifier, SBR
Agent, aromatic naphtha, crosslinking agent and PPA modifying agent are prepared；Wherein bi tumenf orr oad is basic material, and SBS modifier improves
High-temperature behavior, SBR modifying agent improve cryogenic property, and PPA can improve high-temperature behavior and cryogenic property, and aromatic naphtha increases basic material
Compatibility between modifying agent, crosslinking agent make between modifying agent and modifying agent, sulphur occur between modifying agent and basic material
Change reaction, form space net structure, the stability after increasing its dispersion, thus said components cooperate so that hydraulic asphalt
Comprehensive performance is preferable.
For a further understanding of the present invention, below with reference to embodiment to hydraulic asphalt provided by the invention and preparation method thereof
It is described in detail, protection scope of the present invention is not limited by the following examples.
In following embodiment, SBS modifier is the linear SBS modifier of YH-791 of Yueyang petrochemical industry；SBR modifying agent is Shandong
The SBR modifying agent of aobvious member chemical industry；Aromatic naphtha is market purchasing；Stabilizer is market purchasing stabilizer；PPA modifying agent is adopted for market
Purchase the polyphosphoric acids of 110% mass fraction of technical grade.
Embodiment 1
No. 70 A grades of bi tumenf orr oads for taking 100wt%, after melting under the conditions of 140 DEG C, the SBS that 1.0wt% is added changes
Property agent, the SBR modifying agent of 1.0wt% and 3wt% aromatic naphtha after be warming up to 180 DEG C of mixing 0.5h after, shearing 0.5h again
Into obtained asphalt mixture be added 0.2wt% crosslinking agent and 0.2wt% PPA modifying agent, continue shear 0.5h after again
It is agitated to continue to develop 1.0h, obtain hydraulic asphalt.
Embodiment 2
No. 70 A grades of bi tumenf orr oads for taking 100wt%, after melting under the conditions of 140 DEG C, the SBS that 1.0wt% is added changes
Property agent, the SBR modifying agent of 1.0wt% and 3wt% aromatic naphtha after be warming up to 180 DEG C of mixing 0.5h after, shearing 0.5h again
Into obtained asphalt mixture be added 0.2wt% crosslinking agent and 0.2wt% PPA modifying agent, continue shear 0.5h after again
It is agitated to continue to develop 2.0h, obtain hydraulic asphalt.
Embodiment 3
No. 70 A grades of bi tumenf orr oads for taking 100wt%, after melting under the conditions of 140 DEG C, the SBS that 2.0wt% is added changes
Property agent, the SBR modifying agent of 2.0wt% and 4.8wt% aromatic naphtha after be warming up to 180 DEG C of mixing 0.5h after, shear 0.5h
The crosslinking agent of 0.2wt% and the PPA modifying agent of 0.2wt% is added into obtained asphalt mixture again, continues after shearing 0.5h
It is agitated again to continue to develop 2.0h, obtain hydraulic asphalt.
Embodiment 4
No. 70 A grades of bi tumenf orr oads for taking 100wt%, after melting under the conditions of 140 DEG C, the SBS that 2.0wt% is added changes
Property agent, the SBR modifying agent of 3.0wt% and 5.6wt% aromatic naphtha after be warming up to 180 DEG C of mixing 0.5h after, shear 0.5h
The crosslinking agent of 0.2wt% and the PPA modifying agent of 0.2wt% is added into obtained asphalt mixture again, continues after shearing 0.5h
It is agitated again to continue to develop 2.0h, obtain hydraulic asphalt.
Comparative example 1
Identical as the method for hydraulic asphalt prepared by embodiment 3, difference is: SBS modifier and SBR modifying agent is not added,
Analysis the results are shown in Table 1.
Comparative example 2
Identical as the method for hydraulic asphalt prepared by embodiment 3, difference is: stabilizer and PPA modifying agent is not added, analyzes
It the results are shown in Table 1.
The tables of data of hydraulic asphalt prepared by 1 embodiment of the present invention 1~3 of table and comparative example 1~2
As shown in Table 1, the brittle point index for the pitch that prepared by comparative example 1 is greater than embodiment 3, pitch prepared by comparative example 2
Storage stability index is poor.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of hydraulic asphalt, is prepared by following components:
2. hydraulic asphalt according to claim 1, which is characterized in that the bi tumenf orr oad is No. 70 A grades and hands over drip again
Green or No. 90 A grades of heavy traffic paving asphalts.
3. hydraulic asphalt according to claim 1, which is characterized in that the SBS modifier is that the linear SBS of YH-791 is modified
Agent.
4. hydraulic asphalt according to claim 1, which is characterized in that the content of the SBS modifier is 1~2wt%, institute
The content for stating SBR modifying agent is 1~2wt%.
5. hydraulic asphalt according to claim 1, which is characterized in that the content of the aromatic naphtha is 3~5.6wt%.
6. hydraulic asphalt according to claim 1, which is characterized in that the content of the PPA modifying agent be 0.2~
0.4wt%.
7. a kind of preparation method of hydraulic asphalt, comprising the following steps:
By the SBR modifying agent and 2 of SBS modifier, 1~3wt% after the bi tumenf orr oad fusing of 100wt% with 1~3wt%
The aromatic naphtha of~6wt% mixes, and obtains asphalt mixture after heating swelling, shearing；
The crosslinking agent of 0.2~0.3wt% and the PPA modifying agent of 0.1~0.5wt%, shearing are added in the asphalt mixture
After develop, obtain hydraulic asphalt.
8. preparation method according to claim 7, which is characterized in that the temperature of the fusing is 138~150 DEG C.
9. preparation method according to claim 7, which is characterized in that in the step of obtaining asphalt mixture, the liter
The temperature of temperature swelling is 165~185 DEG C, and the time of shearing is 0.5~1h.
10. preparation method according to claim 7, which is characterized in that in the step of obtaining hydraulic asphalt, the shearing
Time be 0.5~1h, time of the development is 1~3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475775.9A CN109593374A (en) | 2018-12-04 | 2018-12-04 | A kind of hydraulic asphalt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811475775.9A CN109593374A (en) | 2018-12-04 | 2018-12-04 | A kind of hydraulic asphalt and preparation method thereof |
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| CN109593374A true CN109593374A (en) | 2019-04-09 |
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| CN201811475775.9A Pending CN109593374A (en) | 2018-12-04 | 2018-12-04 | A kind of hydraulic asphalt and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409804A (en) * | 2020-11-17 | 2021-02-26 | 山东京博石油化工有限公司 | Method for improving road petroleum asphalt aging penetration ratio |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165101A (en) * | 2006-10-20 | 2008-04-23 | 深圳市海川实业股份有限公司 | Water power engineering asphalt and preparation method thereof |
| CN102585525A (en) * | 2012-01-12 | 2012-07-18 | 山东华瑞道路材料技术有限公司 | SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage and preparation process thereof |
| CN104119687A (en) * | 2014-07-21 | 2014-10-29 | 成都工业学院 | Petroleum asphalt modifier and application thereof |
| CN107245246A (en) * | 2017-05-14 | 2017-10-13 | 中铁二院工程集团有限责任公司 | A kind of modified pitch for improving high-speed railway tunneling boring bituminous concrete reinforcing surface layer of subgrade bed cryogenic property and preparation method thereof |
| CN107915878A (en) * | 2017-11-22 | 2018-04-17 | 山东交通学院 | It is a kind of suitable for asphalt composite modifier of modified hard pitch and preparation method thereof |
| CN108410185A (en) * | 2017-12-25 | 2018-08-17 | 甘肃路桥建设集团养护科技有限责任公司 | A kind of high-viscosity asphalt and preparation method thereof |
-
2018
- 2018-12-04 CN CN201811475775.9A patent/CN109593374A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165101A (en) * | 2006-10-20 | 2008-04-23 | 深圳市海川实业股份有限公司 | Water power engineering asphalt and preparation method thereof |
| CN102585525A (en) * | 2012-01-12 | 2012-07-18 | 山东华瑞道路材料技术有限公司 | SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage and preparation process thereof |
| CN104119687A (en) * | 2014-07-21 | 2014-10-29 | 成都工业学院 | Petroleum asphalt modifier and application thereof |
| CN107245246A (en) * | 2017-05-14 | 2017-10-13 | 中铁二院工程集团有限责任公司 | A kind of modified pitch for improving high-speed railway tunneling boring bituminous concrete reinforcing surface layer of subgrade bed cryogenic property and preparation method thereof |
| CN107915878A (en) * | 2017-11-22 | 2018-04-17 | 山东交通学院 | It is a kind of suitable for asphalt composite modifier of modified hard pitch and preparation method thereof |
| CN108410185A (en) * | 2017-12-25 | 2018-08-17 | 甘肃路桥建设集团养护科技有限责任公司 | A kind of high-viscosity asphalt and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 徐南等: "多聚磷酸复合聚合物改性沥青老化前后流变特性及其混合料性能研究", 《公路工程》 * |
| 王卓琦等: "《高速公路与环境乍嘉苏高速公路建设技术》", 30 November 2003, 同济大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409804A (en) * | 2020-11-17 | 2021-02-26 | 山东京博石油化工有限公司 | Method for improving road petroleum asphalt aging penetration ratio |
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