CN1775910A - Process for preparing SBS modified asphalt - Google Patents
Process for preparing SBS modified asphalt Download PDFInfo
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- CN1775910A CN1775910A CN 200510134354 CN200510134354A CN1775910A CN 1775910 A CN1775910 A CN 1775910A CN 200510134354 CN200510134354 CN 200510134354 CN 200510134354 A CN200510134354 A CN 200510134354A CN 1775910 A CN1775910 A CN 1775910A
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Abstract
The invention belongs to manufacture process for SBS modificatioin asphalt. The feature is that: making SBS mucilage mother liquor and the raw materials are 10-20% sol solvent, 4-6% styrene-butadiene-styrene thermoplastic elastomer; adding the SBS mucilage mother liquor into ground substance asphalt that the temperature is 200-300 degree centigrade, fully whisking and making the SBS mucilage mother liquor to react with ground substance asphalt to finish the manufacture for storage modification asphalt. The effect is that: the compatibility of SBS and the asphalt would be improved; the harm to human health and environment would be conquered; and it could be directly used as the effective constituent of modification asphalt.
Description
Technical field
The present invention relates to the production field of modifying asphalt, particularly a kind of SBS modified asphalt preparation method.
Background technology
It is the requirement of the development of modern road traffic to bituminous pavement that pitch is carried out modification, the highroad particularly characteristics of high-grade highway is that the volume of traffic is big, weight-carrying capacity is big and the speed of a motor vehicle is fast, this just proposes more and more higher specification of quality to pitch, common petroleum pitch is difficult to reach requirement, therefore just must carry out modification to petroleum pitch.Modifying asphalt mainly is made up of properties-correcting agent and matrix pitch, and properties-correcting agent commonly used has styrene-butadiene-styrene thermoplastic elastomer (SBS), styrene-butadiene rubber(SBR) (SBR), polyethylene (PE) and other kind properties-correcting agent.Because styrene-butadiene-styrene thermoplastic elastomer (SBS) is with the characteristic of rubber-like and resene properties-correcting agent, can improve the bituminous high temperature performance simultaneously, significantly improve the bituminous pavement performance, prolong the work-ing life on road surface, therefore, SBS is a kind of rising properties-correcting agent, generally adopts SBS to prepare modifying asphalt as properties-correcting agent at present both at home and abroad, and its consumption accounts for about 65% of properties-correcting agent total amount.
In recent years, very many to the research of SBS modifying asphalt both at home and abroad, but the patent of this respect is few, and especially Chinese patent is less.Domestic patent generally adopts solvent method to prepare modifying asphalt, as what report among patent CN1048867 and the CN1069989 all is with toluene or dimethylbenzene masterbatch to be made in styrene-butadiene-styrene thermoplastic elastomer (SBS) dissolving earlier, on-the-spot use masterbatch and a large amount of heated bitumen allotments are reclaimed solvent again and are prepared modifying asphalt.Need use the Macrodilution solvent when shortcoming of this technology is the masterbatch manufacturing, reclaim in the product of back and still contain a small amount of solvent, about 3-5%.And the solvent recuperation energy consumption is higher, has increased manufacturing cost, simultaneously, because these solvents are volatile, can work the mischief to HUMAN HEALTH and environment inevitably, and the SBS modifying asphalt heat-storage of making is poor, easily segregation.
Summary of the invention
Goal of the invention has provided a kind of preparation technology of SBS modifying asphalt, promptly adopts unique mother liquor to prepare the technology of storage type SBS modifying asphalt.Overcome existing solvent method prepare the SBS modifying asphalt exist benzene kind solvent to exist in reclaiming to reclaim energy consumption higher, the manufacturing cost height; Because solvent evaporates works the mischief to HUMAN HEALTH and environment; The deficiency of made SBS modifying asphalt heat-storage difference.
The present invention is main, and what relate to is to adopt the mother liquor composite algorithm to prepare storage type SBS modifying asphalt.
Storage type SBS modified asphalt preparation method of the present invention, it is characterized in that: at first prepare SBS rubber cement mother liquor, the raw materials used components by weight of preparation SBS rubber cement mother liquor: peptizing agent is 10-20%, the styrene-butadiene-styrene thermoplastic elastomer is 4-6%, carrying out heated and stirred handles, its service temperature is 140～160 ℃, and the time is 4.5～12 hours, makes SBS rubber cement mother liquor; Again SBS rubber cement mother liquor is joined temperature and be in 200～230 ℃ the matrix pitch, fully stir, the matrix pitch weight ratio is 74-86%, makes SBS rubber cement mother liquor and matrix pitch generation physical-chemical reaction, reaction times is 2～4.5 hours, finishes the preparation of storage type modifying asphalt.
Because mechanical stirring makes SBS properties-correcting agent be the fine particle shape, homodisperse in pitch, the intermolecular chemical glue connection of concurrent life reacts, and forms the colloidal structure of stable SBS properties-correcting agent-asphaltene molecule.
The present invention provides a kind of petroleum fractions of high aromatic hydrocarbons high flash point to extract oil out as peptizing agent for solving the harm that benzene kind solvent exists, and it can improve the intermiscibility of SBS and matrix pitch again directly as the active principle of modifying asphalt.Described peptizing agent is that the petroleum fractions with refinery is a raw material, the extraction oil that adopts the solvent extraction process means to obtain, and its flash-point is 230-250 ℃, aromaticity content is 40-60%.
The solvent-extracted oil raw material comprises: subtracting that the refinery water distilling apparatus is produced be three-way, subtract four line distillates; The frivolous distillate that the propane deasphalting device is produced; The catalytic slurry that catalytic cracking unit is produced.The extraction oil of these distillates all can be used as peptizing agent, can take also that wherein two kinds of components are composite.The character of peptizing agent is according to the oil property and the different fractions character of being processed.Specific nature is shown in Table 1.
Table 1 solvent-extracted oil character
The matrix pitch of preparation modifying asphalt is that Kelamayi petro-chemical corporation is the heavy duty road asphalt of raw material production with the cycloalkyl viscous crude.
The mother liquor composite algorithm that the present invention proposes prepare storage type SBS modifying asphalt technology simple, easy to operate, can not produce the three wastes, environmentally safe, adopt the modifying asphalt heat-storage stability of this prepared superior, properties-correcting agent isolating phenomenon from pitch can not take place, (JTJ036-1998) technical requirements of SBS class modifying asphalt in the standard of " the polymer modified asphalt technical indicator " that quality product can satisfy the Ministry of Communications.
The invention has the beneficial effects as follows: it is simple that the mother liquor composite algorithm prepares the technical process of storage type SBS modifying asphalt, and easy handling can not work the mischief to HUMAN HEALTH, can not pollute environment; In addition, the SBS modifying asphalt heat-storage difference made of present method is good.
The high aromatic hydrocarbons petroleum fractions peptizing agent that the present invention adopts, it mainly acts on is to improve SBS and bituminous intermiscibility, it can be directly as the active principle of modifying asphalt, the problem of having avoided benzene class noxious solvent that existing solvent method technology uses that HUMAN HEALTH and environment are worked the mischief, and changed the situation that modifying asphalt can not heat-storage.The peptizing agent that the present invention uses can improve SBS molecule and bituminous intermiscibility.It can need not to deviate from from the modifying asphalt system directly as the active principle of modifying asphalt.
Embodiment
For further specifying exploitativeness of the present invention and characteristics, there is example to describe.
Embodiment 1 is in having the container of agitator, taking by weighing peptizing agent subtracts four lines and extracts oily 90g out, the styrene-butadiene-styrene thermoplastic elastomer 30g that Yueyang petro-chemical corporation produces, stir 4.5h down at 160 ℃, make the rubber cement mother liquor that contains 25%SBS, then under 160 ℃, mother liquor mixes under agitation condition with the matrix pitch of 480g, mix the back and heat up, promptly get the uniform and stable SBS modified bitumen product of colloidal structure at 210 ℃ ± 5 ℃ following stirring reaction 2.5h.
The prescription of 1-5 embodiment sees Table 2; The modified bitumen product property analysis of 1-5 embodiment sees Table 3.
Table 2 embodiment table
| Sample | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Peptizing agent | Subtract four lines and extract oily g out | 90 | 95 | 85 | / | / |
| Catalytic slurry is extracted oily g out | / | 75 | 90 | 85 | ||
| Frivolous oil is extracted oily g out | / | / | / | 90 | 90 | |
| Matrix pitch g | 480 | 465 | 496 | 504 | 454 | |
| SBS add-on g | 30 | 25 | 35 | 30 | 30 | |
| Preparation mother liquor temperature ℃ | 160 | 150 | 155 | 160 | 155 | |
| Preparation mother liquor time h | 4.5 | 5 | 7 | 6 | 8 | |
| Temperature of reaction ℃ | 225 | 210 | 220 | 215 | 200 | |
| Reaction times h | 2.5 | 2.5 | 3 | 4.5 | 4 | |
Table 3 SBS modifying asphalt property analysis
。
| Sample | Penetration degree (25 ℃) 0.1mm | Softening temperature ℃ | Ductility (5 ℃) cm | Recovery of elasticity (25 ℃) % | The segregation ℃ |
| Example 1 | 80.7 | 65 | 47 | 85 | 0.5 |
| Example 2 | 83 | 63.5 | 43 | 80 | 0 |
| Example 3 | 84 | 70 | 45 | 97 | 2.0 |
| Example 4 | 75 | 67.5 | 51 | 90 | 0.5 |
| Example 5 | 67. | 70 | 56 | 92 | 1.5 |
Claims (6)
1, a kind of storage type SBS modified asphalt preparation method, it is characterized in that: at first prepare SBS rubber cement mother liquor, the raw materials used components by weight of preparation SBS rubber cement mother liquor: peptizing agent is 10-20%, the styrene-butadiene-styrene thermoplastic elastomer is 4-6%, carrying out heated and stirred handles, its service temperature is 140～160 ℃, and the time is 4.5～12 hours, makes SBS rubber cement mother liquor; Again SBS rubber cement mother liquor is joined temperature and be in 200～230 ℃ the matrix pitch (the matrix pitch weight ratio is 74-86%), by abundant stirring, make SBS rubber cement mother liquor and matrix pitch generation physical-chemical reaction, the reaction times is 2～4.5 hours, finishes the preparation of storage type modifying asphalt.
2, according to the described storage type SBS of claim 1 modified asphalt preparation method, it is characterized in that: described peptizing agent is to be the extraction oil that process means obtains with the refinery solvent extraction, and its flash-point is 230-250 ℃, and aromaticity content is 40-60%.
3, according to the described storage type SBS of claim 1 modified asphalt preparation method, it is characterized in that: described peptizing agent is to subtract four lines to extract oil out.
4, according to the described storage type SBS of claim 1 modified asphalt preparation method, it is characterized in that: described peptizing agent is that catalytic slurry is extracted oil out.
5, according to the described storage type SBS of claim 1 modified asphalt preparation method, it is characterized in that: described peptizing agent is the frivolous extraction oil of propane deasphalting device.
6, according to claim 1,2,3,4 or 5 described storage type SBS modified asphalt preparation method, it is characterized in that: described peptizing agent is to subtract four lines to extract two kinds of components that oil, catalytic slurry extracts out among the frivolous extraction oil of oil or propane deasphalting device out composite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101343546A CN100363462C (en) | 2005-12-16 | 2005-12-16 | Process for preparing SBS modified asphalt |
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| CNB2005101343546A CN100363462C (en) | 2005-12-16 | 2005-12-16 | Process for preparing SBS modified asphalt |
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| CN1775910A true CN1775910A (en) | 2006-05-24 |
| CN100363462C CN100363462C (en) | 2008-01-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457023B (en) * | 2007-12-12 | 2010-11-03 | 中国石油天然气股份有限公司 | Method for preparing polymer modified asphalt by one-step method |
| CN101418129B (en) * | 2007-10-26 | 2011-04-06 | 中国石油化工股份有限公司抚顺石油化工研究院 | Asphalt composition and preparation method thereof |
| CN102051058B (en) * | 2009-10-27 | 2012-07-18 | 中国石油化工股份有限公司 | Asphalt composition and preparation method thereof |
| CN102676195A (en) * | 2012-05-23 | 2012-09-19 | 徐国财 | Chemical modification method of coal pitch with unsaturated thermoplastic elastomer |
| CN103773009A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Preparation method for high-viscosity modified asphalt |
| CN103804936A (en) * | 2014-02-20 | 2014-05-21 | 重庆交通大学 | Waste SBS asphalt regenerant and preparation method thereof |
| CN110734648A (en) * | 2018-07-20 | 2020-01-31 | 中国石油化工股份有限公司 | road asphalt modifier, preparation method and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073382A1 (en) * | 1999-05-28 | 2000-12-07 | Jsr Corporation | Emulsion of thermoplastic elastomer and process for producing the same |
| CN1111195C (en) * | 2000-08-18 | 2003-06-11 | 中国石油化工股份有限公司 | Process for preparing modified asphalt with improved storage stability |
| CN1107099C (en) * | 2000-08-18 | 2003-04-30 | 中国石油化工股份有限公司 | Storage stable modified asphalt and its preparing mehtod |
| KR20040058701A (en) * | 2002-12-27 | 2004-07-05 | 에쓰대시오일 주식회사 | Polymer-modified asphalt composition |
-
2005
- 2005-12-16 CN CNB2005101343546A patent/CN100363462C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418129B (en) * | 2007-10-26 | 2011-04-06 | 中国石油化工股份有限公司抚顺石油化工研究院 | Asphalt composition and preparation method thereof |
| CN101457023B (en) * | 2007-12-12 | 2010-11-03 | 中国石油天然气股份有限公司 | Method for preparing polymer modified asphalt by one-step method |
| CN102051058B (en) * | 2009-10-27 | 2012-07-18 | 中国石油化工股份有限公司 | Asphalt composition and preparation method thereof |
| CN102676195A (en) * | 2012-05-23 | 2012-09-19 | 徐国财 | Chemical modification method of coal pitch with unsaturated thermoplastic elastomer |
| CN103773009A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Preparation method for high-viscosity modified asphalt |
| CN103773009B (en) * | 2012-10-25 | 2016-02-10 | 中国石油化工股份有限公司 | A kind of preparation method of high-viscosity modified asphalt |
| CN103804936A (en) * | 2014-02-20 | 2014-05-21 | 重庆交通大学 | Waste SBS asphalt regenerant and preparation method thereof |
| CN110734648A (en) * | 2018-07-20 | 2020-01-31 | 中国石油化工股份有限公司 | road asphalt modifier, preparation method and application thereof |
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| CN100363462C (en) | 2008-01-23 |
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Effective date of registration: 20180723 Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: PetroChina Karamay Petrochemical Co., Ltd. Patentee after: China Petroleum & Natural Gas Co., Ltd. Address before: 100011 Beijing city Dongcheng District No. 16 Andrew intercontinental building Patentee before: China Petroleum & Natural Gas Co., Ltd. |
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