CN105482472A - Compound modified mixed asphalt and preparation method thereof - Google Patents
Compound modified mixed asphalt and preparation method thereof Download PDFInfo
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- CN105482472A CN105482472A CN201510991893.5A CN201510991893A CN105482472A CN 105482472 A CN105482472 A CN 105482472A CN 201510991893 A CN201510991893 A CN 201510991893A CN 105482472 A CN105482472 A CN 105482472A
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- 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
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to compound modified mixed asphalt and a preparation method thereof. The compound modified mixed asphalt is prepared from the following raw materials in parts by mass: 40 to 60 parts of medium temperature coal pitch, 40 to 60 parts of petroleum asphalt, 0.1 to 10 parts of phthalic acid ester, 0 to 10 parts of polyethylene glycol, 0.1 to 10 parts of SBS modifying agent, and 0.1 to 10 parts of butadiene styrene rubber. Compared with the prior art, the compound modified mixed asphalt and the preparation method thereof, provided by the invention, have the advantages that the content of the coal pitch is greatly improved, and can reach up to 60 percent; the softening point can reach 70.5 DEG C, and the 5 DEG C ductility can reach 54.1cm; through the addition of the polyethylene glycol, the content of polycyclic aromatic hydrocarbon in the mixed asphalt is effectively reduced, wherein the content of the representative substance, namely benzopyrene of the polycyclic aromatic hydrocarbon can be removed about 50 percent in maximum; the performance of the mixed asphalt subjected to compound modification can fully meet SBS modified petroleum asphalt construction technique requirements, and fully meet road using requirements.
Description
Technical field
The invention belongs to asphalt modification technical field, specifically, relate to a kind of composite modified mix asphalt and preparation method thereof.
Background technology
The annual production of coal-tar pitch is high, processing added value is low, market value is only 60 ~ 70% of petroleum pitch, whether coal-tar pitch can be used for by modification the study hotspot that Road construction is road research work.But traditional coal asphalt performance is unstable, poor ductility and containing polycyclic aromatic hydrocarbon pollutant etc., not only makes a big impact to environment, but also the healthy of processing and user of service can be endangered.Therefore, traditional coal pitch cannot meet the needs of Road construction, and application prospect is also pessimistic.For above-mentioned shortcoming and drawback, carry out coal-tar pitch polycyclic aromatic hydrocarbons abatement to suppress, coal-tar pitch and petroleum pitch are admixed simultaneously and puddle (hereinafter referred to as " mix asphalt ") and further modification carrys out improving performance, be prepared into functional and the modification mix asphalt meeting road bitumen code requirement can alleviate the sustainable growth of highway in China construction to petroleum pitch demand, reduce the dependence to Imported oil pitch.In addition, coal-tar pitch, as the byproduct of coal tar industry, is difficult to effective widespread use and causes coal-tar pitch to cause environmental pollution and the wasting of resources, and result also in the development that the decline of coal tar industry profit rate affects whole coal tar industry.Therefore, research pavement performance is excellent, meets the modification mix asphalt required of building the road and has great significance and be worth.The current research about mix asphalt mainly concentrates on the mix asphalt prepared by coal-tar pitch and petroleum pitch, but in the mix asphalt of preparation at present, coal-tar pitch content is lower, mix asphalt poor performance, stability are not enough and with high costs, and these problems govern widespread use and the popularization of mix asphalt always.Therefore, the coal-tar pitch content raising the cost lower, the pollutent reducing costs expensive petroleum pitch content, promote mix asphalt performance and effectively reduce in mix asphalt, for the widespread use of mix asphalt in Road construction has important practical significance.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of composite modified mix asphalt with low cost, of good performance and preparation method thereof.
The composite modified mix asphalt of one of the present invention, the each raw material composition of described modification mix asphalt is counted in mass ratio, comprises medium temperature coal pitch 40-60 part, petroleum pitch 40-60 part, phthalic ester 0.1-10 part, polyoxyethylene glycol 0-10 part, SBS modifier 0.1-10 part, styrene-butadiene rubber(SBR) 0.1-10 part.
The composite modified mix asphalt of one of the present invention, described petroleum pitch is 70# petroleum pitch and 90# petroleum pitch.
The composite modified mix asphalt of one of the present invention, the molecular weight of described polyoxyethylene glycol is one or more in 400,600,800,1000,1200,1500.
The composite modified mix asphalt of one of the present invention, described SBS modifier is one or more in linear 30/70, linear 40/60, star-like 30/70, star-like 40/60.The block ratio of described 30/70 and 40/60 expression vinylbenzene and divinyl.
The composite modified mix asphalt of one of the present invention, each raw material composition of described modification mix asphalt also comprises stem of noble dendrobium fat element 2 parts in mass ratio.
The preparation method of composite modified mix asphalt of the present invention, is characterized in that, described preparation method's concrete steps are:
1) medium temperature coal pitch and petroleum pitch are heated to 100-120 DEG C, constant temperature 2-4h, then take medium temperature coal pitch and petroleum pitch together adds in stirring tank, mechanical stirring 30min at 130-160 DEG C; 2) add phthalic ester and polyoxyethylene glycol, at 160-180 DEG C, continue mechanical stirring 5-30min; 3) mechanical stirring is changed into high speed shear instrument, then styrene-butadiene-styrene block copolymer is added, be 2000-6000rpm by high speed shear instrument adjustment of rotational speed, stirring tank temperature remains on 170-200 DEG C, and constant temperature constant speed shears 5-30min, then slowly powder styrene butadiene rubber is added, velocity of shear is 4000-6000, and stirring tank temperature is under 180-190 DEG C of condition, and constant temperature constant speed shears 30-120min, naturally cooling, i.e. obtained composite modified mix asphalt.
Compared with prior art, composite modified mix asphalt of the present invention has the following advantages: the content of coal-tar pitch is greatly improved, and reaches as high as 60%; When ensureing in mix asphalt that coal-tar pitch component has tremendous increase, the performance of modification mix asphalt still maintains very high level, its softening temperature can reach 70.5 DEG C, and 5 DEG C of ductilities can arrive 54.1cm, and these performances are all far above the performance of current modification mix asphalt; The interpolation of polyoxyethylene glycol effectively reduces the content of polycyclic aromatic hydrocarbons in mix asphalt, and wherein the representative substances benzopyrene content of polycyclic aromatic hydrocarbons is the highest can remove about 50%; Mix asphalt after composite modified, its performance meets SBS modified oil pitch construction technical requirement completely, meets road occupation requirement completely.
Embodiment
Below in conjunction with specific embodiment, described composite modified mix asphalt and preparation method thereof is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
By thermostatically heating 4h in medium temperature coal pitch and 70# Royal Dutch Shell pitch and 120 DEG C of baking ovens, take 40 parts of medium temperature coal pitch and 40 parts of 70# Royal Dutch Shell pitches are placed in stirring tank, at 130 DEG C, stir 30min.Taking after 5 parts of octyl phthalates and 5 parts of Polyethylene Glycol-600s mix joins in the middle of above-mentioned mix asphalt, stirs 10min at adjustment temperature 150 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 4000rpm, adjustment temperature is 170 DEG C, then the SBS taking 2 parts star-like 40/60 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 4 parts of powdered SBRs slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 43.6%
Embodiment 2
By thermostatically heating 4h in 361 petroleum pitch extra large in medium temperature coal pitch and 70# and 120 DEG C of baking ovens, take extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and be placed in stirring tank, at 140 DEG C, stir 30min.Taking after 5 parts of octyl phthalates and 5 parts of polyethylene glycol-800 mix joins in the middle of above-mentioned mix asphalt, stirs 10min at adjustment temperature 170 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 5000rpm, adjustment temperature is 180 DEG C, then the SBS taking 4 parts of line styles 30/70 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 1 part of powdered SBR slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 46.1%.
Embodiment 3
By thermostatically heating 4h in 361 petroleum pitch extra large in medium temperature coal pitch and 70# and 120 DEG C of baking ovens, take extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and be placed in stirring tank, at 150 DEG C, stir 30min.Taking after 5 parts of butyl phthalates and 5 parts of poly(oxyethylene glycol) 400 mix joins in the middle of above-mentioned mix asphalt, stirs 10min at adjustment temperature 180 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 6000rpm, adjustment temperature is 190 DEG C, then the SBS taking 3 parts of line styles 30/70 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 2 parts of powdered SBRs slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 45.3%.
Embodiment 4
By thermostatically heating 4h in 361 petroleum pitch extra large in medium temperature coal pitch and 70# and 120 DEG C of baking ovens, take extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and be placed in stirring tank, at 140 DEG C, stir 30min.Taking after 5 parts of butyl phthalates and 5 parts of Polyethylene Glycol-600s mix joins in the middle of above-mentioned mix asphalt, stirs 10min at adjustment temperature 160 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 5000rpm, adjustment temperature is 170 DEG C, then the SBS taking 2 parts star-like 40/60 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 3 parts of powdered SBRs slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 47.9%.
Embodiment 5
By thermostatically heating 4h in 361 petroleum pitch extra large in medium temperature coal pitch and 70# and 120 DEG C of baking ovens, take extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and be placed in stirring tank, at 140 DEG C, stir 30min.Take 5 parts of octyl phthalates, 2 parts of stem of noble dendrobium fat elements (4,4 '-dihydroxyl-3,3 ', 5,5 '-tetramethoxy-7,9 '-epoxy wood fat alkane-7 ', 9-lactone) and 5 parts of Polyethylene Glycol-600s mix after join in the middle of above-mentioned mix asphalt, stir 10min at adjusting temperature 160 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 5000rpm, adjustment temperature is 180 DEG C, then the SBS taking 1 part of line style 30/70 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 4 parts of powdered SBRs slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 49.7%.
Embodiment 6
By thermostatically heating 4h in 361 petroleum pitch extra large in medium temperature coal pitch and 70# and 120 DEG C of baking ovens, take extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and be placed in stirring tank, at 140 DEG C, stir 30min.Taking after 5 parts of octyl phthalates and 5 parts of Polyethylene Glycol-600s mix joins in the middle of above-mentioned mix asphalt, stirs 10min at adjustment temperature 160 DEG C.Mechanical stirring is changed into high speed shear instrument, adjustment rotating speed is 5000rpm, adjustment temperature is 180 DEG C, then the SBS taking 1 part of line style 30/70 slowly joins in stirring tank, constant temperature constant speed shears 10min, then weigh 4 parts of powdered SBRs slowly to join in stirring tank, continue constant temperature constant speed and shear 60min, composite modified mix asphalt can be obtained.Benzopyrene decreasing ratio is 36.1%.
The three norms the performance test results of the composite modified mix asphalt in above-described embodiment 1-6 is gathered, specifically see table 1.
The performance test of table 1 modification mix asphalt
| Numbering | Softening temperature (DEG C) | Penetration degree (25 DEG C .0.1mm) | 5 DEG C of ductilities (cm) |
| Embodiment 1 | 68.5 | 70.9 | 46.7 |
| Embodiment 2 | 58.0 | 77.8 | 36.9 |
| Embodiment 3 | 57.5 | 86.4 | 46.1 |
| Embodiment 4 | 54.0 | 96.4 | 35.7 |
| Embodiment 5 | 70.5 | 99.3 | 54.1 |
| Embodiment 6 | 62.5 | 87.2 | 37.6 |
Claims (5)
1. a composite modified mix asphalt, it is characterized in that, the each raw material composition of described modification mix asphalt is counted in mass ratio, comprises medium temperature coal pitch 40-60 part, petroleum pitch 40-60 part, phthalic ester 0.1-10 part, polyoxyethylene glycol 0-10 part, SBS modifier 0.1-10 part, styrene-butadiene rubber(SBR) 0.1-10 part.
2. the composite modified mix asphalt of one according to claim 1, is characterized in that, described petroleum pitch is 70# petroleum pitch and 90# petroleum pitch.
3. the composite modified mix asphalt of one according to claim 1, is characterized in that, the molecular weight of described polyoxyethylene glycol is one or more in 400,600,800,1000,1200,1500.
4. the composite modified mix asphalt of one according to claim 1, is characterized in that, described SBS modifier is one or more in linear 30/70, linear 40/60, star-like 30/70, star-like 40/60.
5. the preparation method of composite modified mix asphalt according to claim 1, it is characterized in that, described preparation method's concrete steps are:
1) medium temperature coal pitch and petroleum pitch are heated to 100-120 DEG C, constant temperature 2-4h, then take medium temperature coal pitch and petroleum pitch together adds in stirring tank, mechanical stirring 30min at 130-160 DEG C; 2) add phthalic ester and polyoxyethylene glycol, at 160-180 DEG C, continue mechanical stirring 5-30min; 3) mechanical stirring is changed into high speed shear instrument, then SBS modifier is added, be 2000-6000rpm by high speed shear instrument adjustment of rotational speed, stirring tank temperature remains on 170-200 DEG C, and constant temperature constant speed shears 5-30min, then slowly powder styrene butadiene rubber is added, velocity of shear is 4000-6000, and stirring tank temperature is under 180-190 DEG C of condition, and constant temperature constant speed shears 30-120min, naturally cooling, i.e. obtained composite modified mix asphalt.
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| CN201510991893.5A CN105482472B (en) | 2015-12-25 | 2015-12-25 | A kind of composite modified mix asphalt and preparation method thereof |
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| CN201510991893.5A CN105482472B (en) | 2015-12-25 | 2015-12-25 | A kind of composite modified mix asphalt and preparation method thereof |
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| CN105482472B CN105482472B (en) | 2018-02-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057382A (en) * | 2016-12-31 | 2017-08-18 | 山西省交通科学研究院 | A kind of polymer and montmorillonite modified synergic coal tar pitch and preparation method thereof |
| CN108976833A (en) * | 2018-07-05 | 2018-12-11 | 太原理工大学 | It is a kind of to build the road with the modified preparation method that pitch is blended |
| CN114891358A (en) * | 2022-06-30 | 2022-08-12 | 上海仰胜新材料科技有限公司 | Environment-friendly modified fragrant asphalt |
| CN116063858A (en) * | 2023-03-06 | 2023-05-05 | 滑县鑫进碳素销售有限公司 | Novel high-temperature coal tar pitch |
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| CN101508789A (en) * | 2009-03-06 | 2009-08-19 | 武汉科技大学 | Composite modified asphalt for high-grade high road and preparation thereof |
| CN103044938A (en) * | 2013-01-21 | 2013-04-17 | 武汉科技大学 | Coal asphalt/SBS (Styrene Butadiene Styrene)/waste colloid powder composite modified asphalt and preparation method thereof |
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2015
- 2015-12-25 CN CN201510991893.5A patent/CN105482472B/en active Active
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Non-Patent Citations (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057382A (en) * | 2016-12-31 | 2017-08-18 | 山西省交通科学研究院 | A kind of polymer and montmorillonite modified synergic coal tar pitch and preparation method thereof |
| CN108976833A (en) * | 2018-07-05 | 2018-12-11 | 太原理工大学 | It is a kind of to build the road with the modified preparation method that pitch is blended |
| CN114891358A (en) * | 2022-06-30 | 2022-08-12 | 上海仰胜新材料科技有限公司 | Environment-friendly modified fragrant asphalt |
| CN116063858A (en) * | 2023-03-06 | 2023-05-05 | 滑县鑫进碳素销售有限公司 | Novel high-temperature coal tar pitch |
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Inventor after: Cai Lina Inventor after: Ma Dechong Inventor after: Liu Pengfei Inventor after: Zhang Shuai Inventor after: Wang Xiaolong Inventor after: Zhang Guohong Inventor after: Mu Jianqing Inventor after: Liu Qingbo Inventor after: Xie Bangzhu Inventor after: Liu Zhe Inventor after: Song Lei Inventor after: Liu Xiaojun Inventor after: Song Jiehua Inventor after: Qi Huixiang Inventor before: Cai Lina Inventor before: Mu Jianqing Inventor before: Liu Zhe Inventor before: Ma Dechong Inventor before: Hu Guopeng Inventor before: Liu Pengfei Inventor before: Zhang Shuai Inventor before: Wang Xiaolong Inventor before: Zhang Guohong |
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Effective date of registration: 20180109 Address after: 030006 Taiyuan City, Shanxi province university street, No. 79 Applicant after: Shanxi Province Transport Science Research Institute Applicant after: SHANXI ROAD AND BRIDGE GROUP, YANGMANG EXPRESSWAY CO., LTD. Address before: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Applicant before: Shanxi Province Transport Science Research Institute |
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