CN101962482B - SBS (Styrene-Butadiene-Styrene) modified asphalt and production method thereof - Google Patents
SBS (Styrene-Butadiene-Styrene) modified asphalt and production method thereof Download PDFInfo
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- CN101962482B CN101962482B CN2010105185684A CN201010518568A CN101962482B CN 101962482 B CN101962482 B CN 101962482B CN 2010105185684 A CN2010105185684 A CN 2010105185684A CN 201010518568 A CN201010518568 A CN 201010518568A CN 101962482 B CN101962482 B CN 101962482B
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Abstract
The invention discloses SBS (Styrene-Butadiene-Styrene) modified asphalt and a production method thereof. The SBS modified asphalt mainly comprises the components of matrix asphalt No.70, linear SBS, a solubilizer and a stabilizer, wherein the linear SBS accounts for 3.6% to 4.2% be weight of the of matrix asphalt No.70, the solubilizer accounts for 2.0% to 3.0% by weight of the matrix asphalt No.70, and the stabilizer accounts for 0.16-0.18% be weight of the matrix asphalt No.70. The production method of the SBS modified asphalt comprises the following steps of: (1) heating the matrix asphalt No.70 to 175 DEG C to 185 DEG C; (2) adding the linear SBS and uniformly stirring; and (3) adding the solubilizer and the stabilizer and thoroughly grinding twice by using a colloid mill to obtain the SBS modified asphalt. The production method adopted in the invention effectively shortens the modified time and is low in production cost.
Description
Technical field
The present invention is specifically related to a kind of SBS modifying asphalt and working method thereof.
Background technology
Modifying asphalt is to point to admixture properties-correcting agent in the pitch, or takes measures such as pitch oxidation processing, the bituminous pavement performance is improved and the asphalt processed.Compare with plain asphalt; Modifying asphalt has good anti-rut performance, and cold tolerance is strong, under big load, high-frequency wagon flow effect, good adaptability to changes is arranged; The aging ability of water stability and radioprotective is strong, can reduce the pavement destruction that causes because of vehicle seepage diesel oil, machine oil and gasoline.With the road surface that modifying asphalt is mixed system compound institute making, can not produce embrittlement winter, and can not soften summer, and anti-fatigue performance improves, and prolong work-ing life.
The polymkeric substance that is used for the road modification generally is divided into following three types: rubber-like, resene and TPR class.SBS (styrene-butadiene-styrene block copolymer; Styrene-Butadiene-Styrene, SBS) belong in the TPR class use maximum a kind of, SBS light weight porous; The elastic property that had both had rubber; Have again and set the thermoplastic properties that refers to, thereby have the characteristic of rubber and resin concurrently, the SBS modifying asphalt has occupied more than 65% of polymer modified asphalt.Different and the molecular structure difference according to the contained ratio of vinylbenzene and divinyl, SBS is divided into linear structure and hub-and-spoke configuration.Though the SBS performance of modified bitumen that hub-and-spoke configuration is produced is better, production cost is high, and using more at present is the modifying asphalt that type SBS processes.
In general owing to the production of modifying asphalt, after matrix pitch adopted the SBS modification with common process means, its 25 ℃ of penetration degrees will descend 20～25.As penetration degree after No. 70 heavy traffic paving asphalt modifications about 45～50, so can only meet the requirement of I-D level.Therefore need select for use more high-grade matrix pitch to process when obtaining satisfactory modifying asphalt.For example according to the code requirement of " asphalt highway construction technique normalizing " (JTG F40-2004); Need to be suitable for area that the I-C level requires and just need to select No. 90 pitch man-hour for use adding; Consider that No. 90 bituminous prices are higher than No. 70 bituminous prices and the existing market Absatzvolumen is less; The source of goods is in short supply, and adopting No. 90 pitch to carry out cost of processing then will be apparently higher than adopting No. 70 pitch cost of processing.
Summary of the invention
The objective of the invention is in order to solve the available technology adopting type SBS properties-correcting agent processing high shortcoming of tooling cost when satisfying the pitch that the I-C level requires.
In order to achieve the above object, the invention provides a kind of SBS modifying asphalt, this modifying asphalt is made up of No. 70 matrix pitches, type SBS, solubilizing agent and stablizers; Said type SBS weight is the 3.6-4.2% of matrix pitch weight, and solubilizing agent weight is the 2.0-3.0% of matrix pitch weight, and stablizer weight is the 1.6-1.8 ‰ of matrix pitch weight.
Wherein preferred naphthenic rubber oil of solubilizing agent or aromatic base rubber are oily; The preferred sulphur powder of stablizer.
The present invention also provides a kind of working method of SBS modifying asphalt, adopts to comprise No. 1 stirred pot, No. 2 stirred pots, colloidal mills at least and to be communicated with No. 1, No. 2 stirred pots and the asphalt modification equipment of the pipeline of colloidal mill, and this method may further comprise the steps:
(1) No. 70 matrix pitches is heated to 175-185 ℃, adds in No. 1 stirred pot;
(2) when add the pitch amount be paved with at least jar at the bottom of the time, add type SBS simultaneously, and stir; Wherein the add-on of type SBS is the 3.6-4.2% of matrix pitch weight;
(3) pitch that mixes that obtains in the step (2) is sent into colloidal mill through pipeline, simultaneously solubilizing agent and stablizer are sent in the colloidal mill, colloidal mill grinds and pumps into continuously in No. 2 stirred pots the material of continuous entering; After pitch in No. 1 stirred pot gets into No. 2 stirred pots fully, pump in the hold tank after the modifying asphalt in No. 2 stirred pots ground through colloidal mill once more, obtain the SBS modifying asphalt; In the said process of lapping, No. 2 stirred pots continue to stir until pitch and get into fully in the hold tank, and No. 1 stirred pot continues to stir in pitch gets into No. 2 stirred pots fully; The add-on of said solubilizing agent is the 2.0-3.0% of matrix pitch weight, and the add-on of stablizer is the 1.6-1.8 ‰ of matrix pitch weight.
Wherein the processing temperature in step (2) and the step (3) is controlled at 175-185 ℃; Preferred naphthenic rubber oil of solubilizing agent in the step (3) or aromatic base rubber oil, the brand type of aromatic base rubber oil has models such as the Kunlun board KA80 of PetroChina Company Limited., KA120, KA150 all can use, and naphthenic rubber oil has the Kunlun board KN4006; The preferred sulphur powder of stablizer.
The present invention has the following advantages:
(1) matrix pitch adopts 70# pitch to produce the requirement of the I-C level of " asphalt highway construction technique normalizing " (JTG F40-2004) requirement, has reduced production cost;
(2) star-shaped sbs is big because of relative molecular mass, and intermolecular interaction is also big, and chemically crosslinked is arranged, and the relative movement between the molecule is difficulty relatively, and deformation quantity is little under identical external force effect; And the deformability that is dispersed in the type SBS particulate in the pitch is bigger, and external force is less when producing same deformation quantity, and elongation is big, and ductility is big relatively.Therefore utilize type SBS modifier modification effect better, the modification time that adopting star-shaped sbs to carry out modification needs shortens about 30-40 minute, and modification temperature reduces about 20 ℃.Adopt circulation to get into the method for colloidal mill simultaneously in process of production, careful grinding is carried out in segmentation to the SBS modifying asphalt, and in process of lapping, uninterruptedly stirs, and has more effectively shortened modification time;
(3) amount ranges of SBS properties-correcting agent, solubilizing agent, stablizer is little, is convenient to production control.
Embodiment
Embodiment 1
(1) No. 70 matrix pitch 5kg of heating make its actual temperature reach 175-185 ℃ of permissive temperature of processing, add in No. 1 stirred pot;
(2) add the pitch amount be paved with jar at the bottom of the time, add type SBS properties-correcting agent 200g simultaneously, and stir, whipping temp maintains 175-185 ℃;
(3) after stirring fully; The pitch that mixes that obtains in the step (2) is sent in the colloidal mill through pipeline through glue; In colloidal mill, continue to pump into the Kunlun board KA80 type oil (aromatic base rubber oil) 100g and sulphur powder 8g simultaneously, be continuously pumped into after the grinding in No. 2 stirred pots; After pitch in No. 1 stirred pot gets into No. 2 stirred pots fully, pump in the hold tank after the modifying asphalt in No. 2 stirred pots ground through colloidal mill once more, obtain the SBS modifying asphalt; In the said process of lapping, No. 2 stirred pots continue to stir until pitch and get into fully in the hold tank, and No. 1 stirred pot continues to stir in pitch gets into No. 2 stirred pots fully.
Embodiment 2
(1) No. 70 matrix pitch 20kg of heating in No. 1 stirred pot make its actual temperature reach 175-185 ℃ of processing permissive temperature, add in No. 1 stirred pot;
(2) be a half of total amount adding the pitch amount, add type SBS properties-correcting agent 720g simultaneously, and stir that whipping temp maintains 175-185 ℃;
(3) after stirring fully; The pitch that mixes that obtains in the step (2) is sent in the colloidal mill through pipeline; In colloidal mill, continue to pump into the Kunlun board KN4006 type oil (naphthenic rubber oil) 600g and sulphur powder 36g simultaneously, be continuously pumped into after the grinding in No. 2 stirred pots; After pitch in No. 1 stirred pot gets into No. 2 stirred pots fully, pump in the hold tank after the modifying asphalt in No. 2 stirred pots ground through colloidal mill once more, obtain the SBS modifying asphalt; In the said process of lapping, No. 2 stirred pots continue to stir until pitch and get into fully in the hold tank, and No. 1 stirred pot continues to stir in pitch gets into No. 2 stirred pots fully.
Embodiment 3
Embodiment 2 is produced the SBS modifying asphalt that obtains detect, each item index is following:
Penetration degree (25 ℃, 100g, 5s): 75～61 (0.1mm); Penetrative index PI:-0.39; Ductility (5 ℃, 5cm/min): 38cm; Softening temperature: 84～61.5 ℃; Kinetic viscosity (60 ℃):＞13000Pas; Kinematic viscosity (135 ℃): 2.050Pas: flash-point: 351 ℃; Solubleness: 99.74%; Recovery of elasticity (25 ℃): 94%; The package stability segregation, the 48h softening temperature is poor: 0.2 ℃;
Residue behind the RTFOT: quality change 0.06%; Ductility (5 ℃) 21cm.
Can find out that from each item quality index that detection obtains the modifying asphalt that the working method through SBS modifying asphalt of the present invention makes can reach the requirement of I-C level fully.
Claims (3)
1. the working method of a SBS modifying asphalt adopts to comprise No. 1 stirred pot, No. 2 stirred pots, colloidal mills at least and be communicated with No. 1, No. 2 stirred pots and the asphalt modification equipment of the pipeline of colloidal mill, it is characterized in that: may further comprise the steps:
(1), adds in No. 1 stirred pot with after 175-185 ℃ of No. 70 matrix pitches heating;
(2) when add the pitch amount be paved with at least jar at the bottom of the time, add type SBS simultaneously, and stir; Wherein the add-on of type SBS is the 3.6-4.2% of matrix pitch weight;
(3) pitch that mixes that obtains in the step (2) is added solubilizing agent and stablizer, and the pitch that mixes is sent into colloidal mill through pipeline, colloidal mill grinds and pumps into continuously in No. 2 stirred pots the material of continuous entering; After pitch in No. 1 stirred pot gets into No. 2 stirred pots fully, pump in the hold tank after the modifying asphalt in No. 2 stirred pots ground through colloidal mill once more, obtain the SBS modifying asphalt; In the said process of lapping, No. 2 stirred pots continue to stir until pitch and get into fully in the hold tank, and No. 1 stirred pot continues to stir in pitch gets into No. 2 stirred pots fully; The add-on of said solubilizing agent is the 2.0-3.0% of matrix pitch weight, and the add-on of stablizer is the 1.6-1.8 ‰ of matrix pitch weight;
Wherein, the temperature of step (2) and step (3) is controlled at 175-185 ℃.
2. the working method of SBS modifying asphalt according to claim 1 is characterized in that: the solubilizing agent described in the step (3) is naphthenic rubber oil or aromatic base rubber oil.
3. the working method of SBS modifying asphalt according to claim 1 is characterized in that: the stablizer described in the step (3) is the sulphur powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105185684A CN101962482B (en) | 2010-10-26 | 2010-10-26 | SBS (Styrene-Butadiene-Styrene) modified asphalt and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105185684A CN101962482B (en) | 2010-10-26 | 2010-10-26 | SBS (Styrene-Butadiene-Styrene) modified asphalt and production method thereof |
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| Publication Number | Publication Date |
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| CN101962482A CN101962482A (en) | 2011-02-02 |
| CN101962482B true CN101962482B (en) | 2012-05-16 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898851A (en) * | 2012-11-12 | 2013-01-30 | 天津市恒悦化工有限公司 | Styrene butadiene styrene (SBS) high-performance modified asphalt and preparation method thereof |
| CN103396670B (en) * | 2013-07-11 | 2016-03-23 | 河海大学 | A kind of water-repellent modified pitch for dam asphalt well and preparation method thereof |
| CN103589177A (en) * | 2013-11-25 | 2014-02-19 | 中海沥青（泰州）有限责任公司 | Special SBS modified asphalt and preparation method thereof |
| CN103849153B (en) * | 2014-03-19 | 2016-06-08 | 中石油江苏燃料沥青有限责任公司 | The preparation method of high-viscosity high-elasticity asphalt and high-viscosity high-elasticity asphalt |
| CN104059369A (en) * | 2014-07-01 | 2014-09-24 | 无锡市鑫路道路材料有限公司 | Composite polymer modified asphalt and preparing method of composite polymer modified asphalt |
| CN109181326A (en) * | 2018-08-15 | 2019-01-11 | 深圳市粤通建设工程有限公司 | The elastomeric modified pitch of high viscosity |
| CN111777864A (en) * | 2020-06-05 | 2020-10-16 | 中石油江苏燃料沥青有限责任公司 | Production process of modified asphalt |
| CN112724693A (en) * | 2020-12-25 | 2021-04-30 | 亿虎控股有限公司 | High-strength modified asphalt resistant to high temperature and low temperature and production method thereof |
| CN112724697B (en) * | 2020-12-30 | 2022-04-19 | 北新防水(安徽)有限公司 | High polymer modified asphalt and processing system |
| CN114836051B (en) * | 2022-06-02 | 2024-01-23 | 江苏亿虎沥青材料有限公司 | PG82-22 grade modified asphalt and production method thereof |
| CN115044217A (en) * | 2022-06-29 | 2022-09-13 | 成都交通投资集团有限公司 | High-viscoelasticity modified asphalt suitable for diversified climates |
| CN115637053B (en) * | 2022-09-02 | 2023-09-15 | 四川东方雨虹建筑材料有限公司 | Quick preparation method of SBS modified asphalt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5719216A (en) * | 1995-05-22 | 1998-02-17 | Shell Oil Company | Preparation process for polymer-modified bitumen |
| CN100497481C (en) * | 2006-11-30 | 2009-06-10 | 侯芸 | Asphalt composition and its preparing method |
| CN101280114B (en) * | 2008-05-15 | 2011-05-11 | 上海浦东路桥沥青材料有限公司 | SBS modified road asphalt, production method and device thereof |
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Granted publication date: 20120516 Termination date: 20121026 |