CN103374230A - Method for preparing SBS (styrene and butadiene styrene) modified asphalt - Google Patents
Method for preparing SBS (styrene and butadiene styrene) modified asphalt Download PDFInfo
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- CN103374230A CN103374230A CN2012101092887A CN201210109288A CN103374230A CN 103374230 A CN103374230 A CN 103374230A CN 2012101092887 A CN2012101092887 A CN 2012101092887A CN 201210109288 A CN201210109288 A CN 201210109288A CN 103374230 A CN103374230 A CN 103374230A
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Abstract
The invention relates to a method for preparing a SBS (styrene and butadiene styrene) modified asphalt. The method comprises the following steps of: heating a substrate which is the asphalt to the temperature of 160 DEG C; adding the SBS, wherein addition amount of the SBS is 2.5-10% of that of the asphalt; adding a stabilizer, wherein the addition amount of the stabilizer is 0.2-0.5% of that of the asphalt, and the stabilizer comprises 6-30 parts by weight of sulfur, 6-15 parts by weight of a phenyl olefin polymer, 30-40 parts by weight of aromatic thickened oil and 10-40 parts of a dispersing carrier; heating the materials to the temperature of 170-185 DEG C; and sheering at high speed or grinding for 40-60 minutes with a colloid grinder to obtain the stable SBS modified asphalt which meets the requirement. The SBS modified asphalt prepared by adopting the method reaches the level of the foreign similar asphalt and reaches the level A stipulated in the Technical Specification for Construction of Highway Asphalt Pavements (JTG F40-2004) of the Ministry of Communications.
Description
Technical field
The present invention relates to a kind of preparation method of SBS modifying asphalt, solve the problem of SBS modifying asphalt segregation, belong to petrochemical industry.
Background technology
Because the molecular weight differences of pitch and polymer poly styrene butadiene (SBS) is larger, causes the hot storage stability of SBS modifying asphalt poor, the isolation test result can not satisfy technical requirements.The stabilization technique of polymer modified asphalt is insoluble technical barrier always.
Present research mainly adds sulphur in pitch, under certain reaction conditions, make SBS that crosslinking reaction occur.Because pitch has certain polarity, can be compatible with the SBS part, the crosslinking reaction by SBS can reduce interfacial energy, but the crosslinking reaction process of SBS is the principal element that affects modifying asphalt stability; Existing stablizer is only produced the stable preferably stabilising effect that plays of pitch and SBS for naphthenic base crude, do not have versatility.For the pitch of the high high sulfenyl crude production of asphalt content, stabilising effect is poor, gelatin phenomenon occurs easily, and the SBS modifying asphalt segregation phenomenon of production is serious, and the SBS after often crosslinked separates fully with pitch, causes storage facilities to be scrapped;
The patent No. " 200910023627.8 " announced a kind of SBS modified asphalt stabilizer, it constitutes multi-functional olefinic monomer 0.2-5 part, 90-100 part fragrance viscous crude of 0.5-5 part sulphur, fragrant heterocycle; Because add more aromatic hydrocarbons viscous crude, stablizer presents liquid state, and sulphur and fragrant heterocycle are incompatible with the aromatic hydrocarbons viscous crude, if three kinds of material mixing together, the pulverulent solids sedimentation can occur and the problem such as separate out, thereby cause the stablizer add-on inaccurate, affect stabilising effect; Adding for three times joins causes technological process loaded down with trivial details if divide, and affects the production treatment capacity; In addition, the massfraction of effective constituent is on the low side, causes add-on large, and feed time is long, affects the technology controlling and process of reaction process; Among the embodiment that this patent is announced, the add-on of SBS only is 4.5%, and the SBS of this add-on is more stable than being easier to, and can't illustrate that this technology has stronger suitability.
The patent No.: 200910013391.X king can weigh etc., and a kind of stablizer of material of construction is by polyoxyethylene glycol 10-20,5～10 parts in sulphur, calcium chloride 10-20 part, defoamer 2-4 part, ethylene-vinyl acetate copolymer 15-30 part, polyoxyethylene 5-15 part, water 20-40 part.In plain asphalt, can improve the stability of pitch, mainly for plain asphalt high temperature stability performance, water stability and cling property, rather than SBS modifying asphalt of the present invention;
The patent No.: 200710009696.4 Li Shuan of University of Fuzhou are auspicious; Lin Qing; Dong Shengxiong, a kind of stabiliser composition for polymer modified asphalt; A kind of stablizer is provided, essential substance is EVA (ethylene-vinyl acetate copolymer) and P contained compound, be applicable to the SBS addition at the modifying asphalt below 5%, adopt the lab scale 5%SBS modifying asphalt isolation test result of this stablizer making about 2 ℃, full scale plant produce or the SBS addition 5% when above, the modifying asphalt isolation test is difficult to reach≤2.5 ℃ technical requirements;
The patent No.: 02140429.1 Inst. of Maoming Branch, China Petrochemical Corp Li Yan; Li Hong; Tan Hai; Dang Chenxia etc.; A kind of stabiliser composition and preparation method for polymer modified asphalt; Mainly by composite forming such as vulcanization crosslinking agent, thiurams crosslinking accelerator, fatty acid acyl amine dispersion agents, these material costs are very high.This stablizer is effective to being lower than 6%SBS lab scale modifying asphalt, does not have versatility; Reinforced process is loaded down with trivial details, and operating environment is poor;
The patent No.: the refined China of 00123513.3 China Petroleum ﹠ Chemical Corporation Research Institute of Petroleum Guo; Huang Wei prays; Prince army; Zhang Baichun; She Yucheng; A kind of process for preparing modified asphalt that improves stability in storage adds short vulcanizing agent and is the polarity that morpholine class or thiuram compound, adding polar compound, acidic cpd etc. change pitch; Operating environment is poor, process is loaded down with trivial details, and the process time is longer, needs in advance SBS to be carried out pre-treatment 5-7 lab scale, and the reaction times is 1-6 hour; And stabilising effect is unsatisfactory, and the isolation test result does not have versatility about 2 ℃; The v summary of the invention
The preparation method who the purpose of this invention is to provide a kind of SBS modifying asphalt, be convenient to reinforced production, improve operating environment, and solve the segregation problem of polymer SBS modified asphalt at all, make the isolation test result of modifying asphalt satisfy the technical requirements of .JTG F40-2004.
The preparation method of SBS modifying asphalt of the present invention:
Matrix pitch is heated to 160 ℃, add SBS, the SBS add-on is the 2.5-10% of matrix pitch, add stablizer, add-on is the 0.2-0.5% of matrix pitch, is warming up to 170-185 ℃, carry out high speed shear or adopt colloidal mill to grind 40-60 minute, namely be met the stable form SBS modified bitumen product of requirement, can be pumped into storage tank and carry out constant temperature storage growth, also directly entrucking is dispatched from the factory.
Stablizer for the SBS modifying asphalt of the present invention consists of the following composition by weight:
Sulphur 6-30 part, phenyl olefin polymer 6-15 part, aromatic hydrocarbons viscous crude 30-40 part, dispersible carrier material 10-40 part; Wherein sulphur is industrial sulphur, and particle diameter is more than 200 orders; The aromatic hydrocarbons viscous crude is the underpressure distillation lubricant base; The dispersible carrier material is selected from carbon black, white carbon black, mica, diatomite, kaolin, rock asphalt, and the particle diameter fineness is more than 200 orders;
The making method of stablizer of the present invention is as follows:
With above material as requested umber measure, at 180 ℃ of input Banbury mixeies, mix banburying, then extruder grain cooling.
The present invention adds the low molecular weight rubber close with the SBS structure with the stabilization technique of vulcanization of rubber application of principle in the SBS modifying asphalt, and the carrier substance that disperses vulcanizing agent, thereby makes the SBS modifying asphalt reach stable colloidal structure.This stablizer is to carry out granulation after several materials are fully mixed by Banbury mixer to form.This stablizer is convenient to feed in raw material, and operating environment is good.By add-on and temperature of reaction and the reaction times of control stablizer, the vulcanization rate of control SBS, softening temperature, ductility and the viscosity of control SBS modifying asphalt, operating procedure is simple, workable, all have good suitability for various asphalt, add-on is little, effective, also be applicable to produce at high proportion SBS modifying asphalt and high-viscosity asphalt.The isolation test result is less than 2.5 ℃, and softening temperature can reach 70-90 ℃.Satisfy the technical requirements in the Ministry of Communications's industry standard " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
The effect of invention
Adopt the technology of sulphur reduction method, control certain temperature of reaction and reaction times, in low kerite, replenish a certain amount of element sulphur, can make sulphur content is that about 0.5% penetration of bitumens indices P I value improves 0.5～1.5, softening temperature improves 2～6 ℃, make its originally the PI value be-1.8～-2.4 bring up to-more than 1.5, the softening temperature of pitch is also brought up to the standard intermediate value from original low limit value, the viscosity of pitch also increases, other change of properties is little, the pitch of producing reaches the level of external similar asphaltic products., and satisfies the technical requirements of A level in the Ministry of Communications's industry standard " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
Embodiment
Embodiment 1
Material asphalt is From Huanxiling AH-110, penetration degree 112, and sample thief 1000 restrains, and adds the SBS55 gram, adds stablizer 2.5 grams, uses emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 1.Results of performance analysis sees Table 2, satisfies the technical requirements of I-B among the JTGF40-2004.
Embodiment 2
Material asphalt is From Huanxiling AH-110, penetration degree 112, and sample thief 1000 restrains, and adds the SBS65 gram, adds stablizer 2.5 grams, uses emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 2.Results of performance analysis sees Table 2, satisfies the technical requirements of I-C among the JTGF40-2004.
Embodiment 3
Material asphalt is From Huanxiling AH-110, penetration degree 112, and sample thief 1000 restrains, and adds the SBS75 gram, adds stablizer 2.5 grams, uses emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 3.Results of performance analysis sees Table 2, satisfies the technical requirements of I-C among the JTG F40-2004.
Embodiment 4
Material asphalt is From Huanxiling AH-110, penetration degree 112, sample thief 1000 grams, add the SBS85 gram, add aromatic hydrocarbon oil 20 grams, add stablizer 2.7 grams, with emulsion dispersion machine high speed shear 40-60 minute, temperature of reaction was 170-185 ℃, and the asphalt sample that obtains is numbering 4.Results of performance analysis sees Table 2, satisfies the technical requirements of I-C among the JTG F40-2004.
Embodiment 5
Material asphalt is Qinhuangdao AH-70, penetration degree 71, sample thief 1000 grams, add the SBS55 gram, add aromatic hydrocarbon oil 20 grams, add stablizer 2.5 grams, with emulsion dispersion machine high speed shear 40-60 minute, temperature of reaction was 170-185 ℃, and the asphalt sample that obtains is numbering 5.Results of performance analysis sees Table 3, satisfies the technical requirements of I-D among the JTG F40-2004.
Embodiment 6
Material asphalt is shell AH-90, penetration degree 86, and sample thief 1000 grams add SBS55 and restrain, and add aromatic hydrocarbon oil 20 grams, add stablizer 2.5 grams, use emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 6.Results of performance analysis sees Table 3, satisfies the technical requirements of I-C among the JTG F40-2004.
Embodiment 7
Material asphalt is SK AH-70, penetration degree 73, and sample thief 1000 grams add SBS55 and restrain, and add aromatic hydrocarbon oil 30 grams, add stablizer 2.5 grams, use emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 7.Results of performance analysis sees Table 3, satisfies the technical requirements of I-D among the JTG F40-2004.
Embodiment 8
Material asphalt is Zhonghai 36-1 AH-90, penetration degree 89, and sample thief 1000 restrains, and adds the SBS65 gram, adds stablizer 2.5 grams, uses emulsion dispersion machine high speed shear 40-60 minute, and temperature of reaction is 170-185 ℃, and the asphalt sample that obtains is numbering 8.Results of performance analysis sees Table 3, satisfies the technical requirements of I-C among the JTGF40-2004.
The analytical results of table 1 material asphalt
Table 2SBS performance of modified bitumen analytical results
Table 3SBS performance of modified bitumen analytical results
Claims (1)
1. the preparation method of a SBS modifying asphalt, it is characterized in that: matrix pitch is heated to 160 ℃, add SBS, the SBS add-on is the 2.5-10% of matrix pitch, add stablizer, add-on is the 0.2-0.5% of matrix pitch, is warming up to 170-185 ℃, carry out high speed shear or adopt colloidal mill to grind 40-60 minute, namely be met the stable form SBS modified bitumen product of requirement;
Described stablizer is by weight by sulphur 6-30 part, phenyl ring olefin polymer 6-15 part, and aromatic hydrocarbons viscous crude 30-40 part, dispersible carrier material 10-40 part forms;
Sulphur is industrial sulphur, and particle diameter is more than 200 orders;
The aromatic hydrocarbons viscous crude is the underpressure distillation lubricant base;
The dispersible carrier material is selected from carbon black, white carbon black, mica, diatomite, kaolin, rock asphalt, and the particle diameter fineness is more than 200 orders.
Above-mentioned material at 180 ℃ of input Banbury mixeies, is mixed banburying, and then the extruder grain cooling obtains stablizer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672930A (en) * | 2015-03-10 | 2015-06-03 | 中化弘润石油化工有限公司 | Continuous production technology for SBS (styrene-butadiene-styrene) modified asphalt |
| CN104962088A (en) * | 2015-06-26 | 2015-10-07 | 安徽顺驰电缆有限公司 | Preparation technology for rubber asphalt parent |
| CN106189291A (en) * | 2016-07-15 | 2016-12-07 | 黑龙江省中信路桥材料有限公司 | Iran's natural rock asphalt modified pitch and preparation method thereof |
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| CN1324895A (en) * | 2001-07-05 | 2001-12-05 | 上海交通大学 | Production process of modified asphalt mateiral for road |
| US20050051055A1 (en) * | 2003-09-09 | 2005-03-10 | Hercilio Rivas | Method for preparation of asphalt composition |
| CN101077935A (en) * | 2007-04-13 | 2007-11-28 | 广州路翔股份有限公司 | Process for preparing high elasticity modified asphalt |
| CN101628989A (en) * | 2009-08-19 | 2010-01-20 | 西安国琳实业有限公司 | Sbs modified asphalt stabilizer and preparation method thereof |
| CN102040846A (en) * | 2009-10-16 | 2011-05-04 | 中国石油化工股份有限公司 | Oil-resistant asphalt pavement material and preparation method thereof |
| CN102382329A (en) * | 2010-09-02 | 2012-03-21 | 中国石油化工股份有限公司 | Sulfur-containing stabilizer and polymer modified asphalt and preparation method thereof |
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2012
- 2012-04-13 CN CN201210109288.7A patent/CN103374230B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1324895A (en) * | 2001-07-05 | 2001-12-05 | 上海交通大学 | Production process of modified asphalt mateiral for road |
| US20050051055A1 (en) * | 2003-09-09 | 2005-03-10 | Hercilio Rivas | Method for preparation of asphalt composition |
| CN101077935A (en) * | 2007-04-13 | 2007-11-28 | 广州路翔股份有限公司 | Process for preparing high elasticity modified asphalt |
| CN101628989A (en) * | 2009-08-19 | 2010-01-20 | 西安国琳实业有限公司 | Sbs modified asphalt stabilizer and preparation method thereof |
| CN102040846A (en) * | 2009-10-16 | 2011-05-04 | 中国石油化工股份有限公司 | Oil-resistant asphalt pavement material and preparation method thereof |
| CN102382329A (en) * | 2010-09-02 | 2012-03-21 | 中国石油化工股份有限公司 | Sulfur-containing stabilizer and polymer modified asphalt and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672930A (en) * | 2015-03-10 | 2015-06-03 | 中化弘润石油化工有限公司 | Continuous production technology for SBS (styrene-butadiene-styrene) modified asphalt |
| CN104962088A (en) * | 2015-06-26 | 2015-10-07 | 安徽顺驰电缆有限公司 | Preparation technology for rubber asphalt parent |
| CN106189291A (en) * | 2016-07-15 | 2016-12-07 | 黑龙江省中信路桥材料有限公司 | Iran's natural rock asphalt modified pitch and preparation method thereof |
| CN106189291B (en) * | 2016-07-15 | 2018-10-23 | 黑龙江省中信路桥材料有限公司 | Iranian natural rock asphalt modified pitch and preparation method thereof |
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