CN101077935A - Process for preparing high elasticity modified asphalt - Google Patents
Process for preparing high elasticity modified asphalt Download PDFInfo
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- CN101077935A CN101077935A CN 200710027545 CN200710027545A CN101077935A CN 101077935 A CN101077935 A CN 101077935A CN 200710027545 CN200710027545 CN 200710027545 CN 200710027545 A CN200710027545 A CN 200710027545A CN 101077935 A CN101077935 A CN 101077935A
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Abstract
The process of producing high elasticity modified asphalt includes the following steps: mixing matrix asphalt, arene oil in 0.5-20 wt% of the asphalt and furfural oil in 1-10 wt% of the asphalt at 100-140 deg.c; adding SBS in 6-10 wt% of the asphalt and heating to 160-200 deg.c to react for 100-150 min; adding stabilizer comprising sulfur 40-60 wt% and dicumyl peroxide 40-60 wt% and in 0.1-1.6 wt% of the asphalt to react for 30-60 min; and high speed shearing for 10-60 min each ton. The technological process of the present invention has sufficient reaction of the components and high product quality, and the product has excellent high temperature and low temperature performance and powerful elastic recovery capacity.
Description
Technical field
The present invention relates to a kind of production technique of high elasticity modified asphalt.
Background technology
When present old cement pavement adopts flexible overlay or old asphalt pavement to adopt the asphalt overlay technology, may cause that asphaltum concrete cover-layer produces reflection crack or reflection crack because of the disease defective or the old cement concrete slab seam of underlying stratum; Cause that because of drying shrinkage, the temperature of semi-rigid material contracts basic unit produces the crack when semi-rigid type base is adopted on new road, and reflex on the asphalt roofing.In order to solve reflection crack, usually adopt the stress absorbing layer technology, high elasticity modified asphalt is the agglutinate that is applied to antireflection crack stress absorbing layer, have higher high-temperature viscosity and low-temperature ductility, promptly compare and have better high-temperature stability, low temperature anti-fatigue performance and elastic recovery capability with plain asphalt or modifying asphalt commonly used.
The patent No. is that (publication number: Chinese invention patent CN1247741C) discloses a kind of method for preparing modifying asphalt with high aromatic oil to ZL03109584.4, this method adopts 10～25wt% high aromatic oil, the frivolous oil of the propane deasphalting of 65～85wt% is extracted the vacuum residuum of oil and 5～10wt% out or is adopted 10～40wt% high aromatic oil, 30～45wt% oxidized bitumen oil and 30～45wt% vacuum residuum, under 100～160 ℃, through static mixer, mix and stirred 20～80 minutes, preparation blending matrix pitch; Adopt the matrix pitch of 92～97wt% and the SBS of 3～8wt%, at 170～240 ℃ of down cuts, velocity of shear is 2500～6000 rev/mins, and shear time is 20～150 minutes, obtains the modifying asphalt that low-temperature ductility and softening temperature all are better than plain asphalt.The shortcoming of this method at first need to be to concoct the preparation matrix pitch with high aromatic oil and the asphalt stock through selecting, according to the description of this patent document as can be known, adopt the asphalt stock of this patented method to only limit to third diasphaltene or oxidized bitumen, make its range of application very narrow, be unfavorable for industrialized production.Secondly, this patented method is mixed direct shear afterwards with matrix pitch with SBS, can make that the reaction of matrix pitch and SBS is insufficient, and promptly SBS disperses inhomogeneously in pitch, influences the stability of product.
Number of patent application is that 200410053771.3 (publication number: Chinese invention patent application CN1733832A) discloses a kind of memory type SBS modifying asphalt and production method, this product is formed by SBS modified asphalt agglomerate 3～8%, matrix pitch 90～95%, chemical stabilizer 0.1～2% uniform mixing at least, wherein, SBS modified asphalt agglomerate component is: SBS 60～90%, thermoplastic resin PE 5～30%, phase solvent 5～30%; Chemical stabilizer is selected polysulfide or peroxide compound for use, technical process is earlier with SBS, PE, phase solvent extruding pelletization on twin screw extruder proportionally, then SBS modified asphalt agglomerate 3～8%, matrix pitch 90～95%, chemical stabilizer 0.1～2% are mixed at stirring cleavage reaction still, processing condition are 150～170 ℃ of temperature, the stirring velocity of shear is 120～1440rpm, 20～60 minutes time.The technical process of this patent application is to make modified asphalt agglomerate earlier, again with master batch and matrix pitch, that chemical stabilizer stirs shear-mixed is even, technology is more loaded down with trivial details, and the sufficient reacting whether in technical process of the multiple composition in the modified asphalt agglomerate, also can influence final quality product.
Summary of the invention
The object of the present invention is to provide a kind of production technique of high elasticity modified asphalt, this process application scope is wide, and each component reaction is abundant, and product high temperature, low-temperature performance are superior, and elastic recovery capability is strong.
The present invention adopts following steps to realize:
Step 1: 100～140 ℃ matrix pitches and fragrant hydrocarbon ils, furfural extract oil are mixed in proportion stirring, and the weight of fragrant hydrocarbon ils is equivalent to 0.5～20% of matrix pitch weight, and the weight of furfural extract oil is equivalent to 1～10% of matrix pitch weight; Add the SBS mixing that is equivalent to matrix pitch weight 6～10% again, be warming up to 160～200 ℃, 100～150 minutes reaction times;
Step 2: add the stablizer that is equivalent to matrix pitch weight 1～16% ‰, reacted 30～60 minutes, the compositions in weight percentage of stablizer is:
Sulphur 40～60%
Dicumyl peroxide 40～60%;
Step 3: reacted material is carried out high speed shear form.
Preferred shearing rate is 10～60 minutes/ton, fragrance divides content greater than 50% in the fragrance hydrocarbon ils, 100 ℃ of viscosity are 10～200cp, and the molecular weight ranges of SBS is more than 100000, and its structure comprises the mixture of line style, star-like or several styrene-butadiene-styrene block copolymers.
The present invention adopts fragrant hydrocarbon ils, furfural extract oil and SBS and the matrix pitch mixing of macromolecule, improved the intermiscibility of SBS and matrix pitch, SBS can be scattered in the pitch preferably, the needs of having avoided low molecular weight solvent to bring reclaim solvent, long, the residue problem of technical process, and technology of the present invention is applicable to various matrix pitches, have wide range of applications, be beneficial to industrialized production.Technology of the present invention has been added chemical stabilizer after SBS and matrix pitch mixing, make the out-phase chemically crosslinked takes place between polymkeric substance and the pitch, can improve the stability of modifying asphalt greatly.The Production Flow Chart of technology of the present invention makes each component reaction abundant, has guaranteed quality product, makes product high temperature, low-temperature performance superior, and elastic recovery capability is strong.
According to the modifying asphalt that the present invention produces, estimate its every index such as following table by analysis:
| Project | Index |
| Penetration degree (25 ℃ of 100g 5s) 0.1mm | ＜70 |
| Softening temperature ℃ | ＞65 |
| Ductility (5 ℃ of 5cm/min) cm | ＞50 |
| Solubleness % | ＞99 |
| Viscosity (135 ℃) pa.s | ＜3.5 |
| Flash-point ℃ | ＞230 |
| Recovery of elasticity (in the 5min, 25 ℃) | ＞95％ |
| Segregation (48h) | ＜6℃ |
| Residue behind the rotating thin film baking oven | |
| Mass loss % | ＜1.0 |
| Ductility (5 ℃ of 5cm/min) cm | ＞30 |
| Penetration ratio (25 ℃) % | ＞60 |
| Recovery of elasticity (in the 5min, 25 ℃) | ＞75％ |
Embodiment
Embodiment 1～4
| Numbering | Matrix pitch | The fragrance hydrocarbon ils | Furfural extract oil | (SBS) | Mixed stabilizer |
| 1 | 1 | 4％ | 0 | 8％ | 0.35％ |
| 2 | 1 | 4％ | 2％ | 8％ | 0.35％ |
| 3 | 1 | 4％ | 3％ | 8％ | 0.35％ |
| 4 | 1 | 4％ | 4％ | 8％ | 0.35％ |
Annotate: the consumption of mixed stabilizer, styrene-butadiene block copolymer (SBS) and fragrant hydrocarbon ils is benchmark with the matrix pitch.
Matrix pitch uses No. 70 pitches of Tai Puke, and Sulfur in the mixed stabilizer and dicumyl peroxide respectively account for 50%, and SBS uses LGS01.Technical process is: the matrix pitch of certain mass is injected reactor, be warming up to 120 ℃.Add furfural extract oil in last table ratio, 4% fragrant hydrocarbon ils, the SBS of adding 8% is heated to 180 ℃, swelling 120 minutes, the mixed stabilizer of adding 0.35% was sheared 30 minutes, and reheat stirred 30 minutes, obtained finished product.Its key technical indexes is as follows:
| Numbering | Softening temperature/℃ | Penetration degree/0.1mm | 5 ℃ of ductility/cm | 5 minutes recovery of elasticity | 5 minutes recovery of elasticity (the aging back of TFOT) |
| 1 | 96 | 52.2 | 47 | 85 | 73 |
| 2 | 96.4 | 58.2 | 42.4 | 95 | 77 |
| 3 | 89.4 | 64.5 | 65 | 96 | 79 |
| 4 | 95 | 63 | 60 | 97 | 80 |
Embodiment 5～6
| Numbering | Matrix pitch | The fragrance hydrocarbon ils | Furfural extract oil | (SBS) | Mixed stabilizer |
| 5 | 1 | 4％ | 2％ | 7％ | 0.35％ |
| 6 | 1 | 4％ | 2％ | 8.5％ | 0.35％ |
Annotate: the consumption of mixed stabilizer, styrene-butadiene block copolymer (SBS) and fragrant hydrocarbon ils is benchmark with the matrix pitch.
Matrix pitch uses No. 70 pitches of Tai Puke, and Sulfur in the mixed stabilizer and dicumyl peroxide respectively account for 50%, and SBS uses LG501.Technical process is: the matrix pitch of certain mass injected reactor, is warming up to 120 ℃ and adds 2% furfural extract oil, and 4% fragrant hydrocarbon ils.Add SBS in last table ratio, be heated to 180 ℃, swelling 120 minutes, the mixed stabilizer of adding 0.35% was sheared 30 minutes, and reheat stirred 30 minutes, obtained finished product.
Its key technical indexes is as follows:
| Numbering | Softening temperature/℃ | Penetration degree/0.1mm | 5 ℃ of ductility/cm | 5 minutes recovery of elasticity | 5 minutes recovery of elasticity (the aging back of TFOT) |
| 5 | 85 | 62.3 | 45 | 95 | 75 |
| 6 | 100 | 64 | 56 | 96 | 78 |
Embodiment 7
| Numbering | Matrix pitch | The fragrance hydrocarbon ils | Furfural extract oil | (SBS) | Mixed stabilizer |
| 7 | 1 | 4％ | 2％ | 7％ | 0.4％ |
Annotate: the consumption of mixed stabilizer, styrene-butadiene block copolymer (SBS) and fragrant hydrocarbon ils is benchmark with the matrix pitch.
Matrix pitch uses No. 70 pitches of Tai Puke, and Sulfur in the mixed stabilizer and dicumyl peroxide respectively account for 50%, and SBS uses LG501.Technical process is: the matrix pitch of certain mass injected reactor, is warming up to 120 ℃ and adds 2% furfural extract oil, and 4% fragrant hydrocarbon ils.Add 7%SBS, be heated to 180 ℃, swelling 120 minutes, the mixed stabilizer of adding 0.4% was sheared 30 minutes, and reheat stirred 30 minutes, obtained finished product.
Its key technical indexes is as follows:
| Numbering | Softening temperature/℃ | Penetration degree/0.1mm | 5 ℃ of ductility/cm | 5 minutes recovery of elasticity | 5 minutes recovery of elasticity (the aging back of TFOT) |
| 7 | 92 | 61.6 | 48.5 | 95 | 76 |
Claims (4)
1, a kind of production technique of high elasticity modified asphalt is characterized in that: adopt following steps
Step 1: 100～140 ℃ matrix pitches and fragrant hydrocarbon ils, furfural extract oil are mixed in proportion stirring, and the weight of fragrant hydrocarbon ils is equivalent to 0.5～20% of matrix pitch weight, and the weight of furfural extract oil is equivalent to 1～10% of matrix pitch weight; Add the SBS mixing that is equivalent to matrix pitch weight 6～10% again, be warming up to 160～200 ℃, 100～150 minutes reaction times;
Step 2: add the stablizer that is equivalent to matrix pitch weight 1～16 ‰, reacted 30～60 minutes, the compositions in weight percentage of stablizer is:
Sulphur 40～60%
Dicumyl peroxide 40～60%;
Step 3: reacted material is carried out high speed shear form.
2, the production technique of a kind of high elasticity modified asphalt according to claim 1 is characterized in that: the shearing rate of step 3 is 10～60 minutes/ton.
3, the production technique of a kind of high elasticity modified asphalt according to claim 1 is characterized in that: fragrance branch content is 10～200cp greater than 50%, 100 ℃ of viscosity in the described fragrant hydrocarbon ils.
4, the production technique of a kind of high elasticity modified asphalt according to claim 1, it is characterized in that: the molecular weight ranges of described SBS is more than 100000, and its structure comprises the mixture of line style, star-like or several styrene-butadiene-styrene block copolymers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710027545 CN101077935A (en) | 2007-04-13 | 2007-04-13 | Process for preparing high elasticity modified asphalt |
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| CN 200710027545 CN101077935A (en) | 2007-04-13 | 2007-04-13 | Process for preparing high elasticity modified asphalt |
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Cited By (13)
| 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 |
| CN102040848A (en) * | 2010-12-27 | 2011-05-04 | 路翔股份有限公司 | SBS modified asphalt prepared from low aromatics content petroleum asphalt and preparation method thereof |
| CN102391612A (en) * | 2011-10-20 | 2012-03-28 | 河南万里路桥集团有限公司 | Anionic aqueous colorized road surface crack sealing material and preparation process thereof |
| CN103044933A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Polymer modified asphalt stabilizer composition |
| CN103044930A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Aging-resistant caulking filling material and preparation method thereof |
| CN103044932A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for preparing modified asphalt by using raw material with low asphaltene content |
| CN103374229A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Stabilizer for SBS modified asphalt and preparation method thereof |
| CN103374230A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation method of SBS modified asphalt |
| WO2014029372A3 (en) * | 2012-08-22 | 2014-04-10 | Corporacion Para La Investigacion Y Desarrollo De Asfaltos En El Sector Transporte E Industrial-Corasfaltos | Asphalt modified with an sbs/mmwcnt nanocomposite and production method thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN108690359A (en) * | 2018-06-04 | 2018-10-23 | 长安大学 | A kind of response type SBS compounding high-viscosity high-elasticity modified pitch and preparation method |
| CN108948753A (en) * | 2017-05-17 | 2018-12-07 | 中路高科(北京)公路技术有限公司 | A kind of warm mix high adhered modification pitch and its preparation and application |
| CN111218121A (en) * | 2018-11-23 | 2020-06-02 | 中国石油天然气股份有限公司 | Polymer modified asphalt cement and preparation method thereof |
-
2007
- 2007-04-13 CN CN 200710027545 patent/CN101077935A/en active Pending
Cited By (21)
| 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 |
| CN102040848B (en) * | 2010-12-27 | 2014-01-08 | 路翔股份有限公司 | SBS modified asphalt prepared from low aromatics content petroleum asphalt and preparation method thereof |
| CN102040848A (en) * | 2010-12-27 | 2011-05-04 | 路翔股份有限公司 | SBS modified asphalt prepared from low aromatics content petroleum asphalt and preparation method thereof |
| CN103044932A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for preparing modified asphalt by using raw material with low asphaltene content |
| CN103044933A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Polymer modified asphalt stabilizer composition |
| CN103044930A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Aging-resistant caulking filling material and preparation method thereof |
| CN103044933B (en) * | 2011-10-17 | 2015-05-13 | 中国石油天然气股份有限公司 | Polymer modified asphalt stabilizer composition |
| CN103044932B (en) * | 2011-10-17 | 2015-08-19 | 中国石油天然气股份有限公司 | Method for preparing modified asphalt by using raw material with low asphaltene content |
| CN102391612B (en) * | 2011-10-20 | 2013-03-13 | 许昌金欧特沥青股份有限公司 | Anionic aqueous colorized road surface crack sealing material and preparation process thereof |
| CN102391612A (en) * | 2011-10-20 | 2012-03-28 | 河南万里路桥集团有限公司 | Anionic aqueous colorized road surface crack sealing material and preparation process thereof |
| CN103374230B (en) * | 2012-04-13 | 2015-09-23 | 中国石油天然气股份有限公司 | Preparation method of SBS modified asphalt |
| CN103374229A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Stabilizer for SBS modified asphalt and preparation method thereof |
| CN103374230A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation method of SBS modified asphalt |
| CN103374229B (en) * | 2012-04-13 | 2015-09-23 | 中国石油天然气股份有限公司 | Stabilizer for SBS modified asphalt and preparation method thereof |
| WO2014029372A3 (en) * | 2012-08-22 | 2014-04-10 | Corporacion Para La Investigacion Y Desarrollo De Asfaltos En El Sector Transporte E Industrial-Corasfaltos | Asphalt modified with an sbs/mmwcnt nanocomposite and production method thereof |
| US9353292B2 (en) | 2012-08-22 | 2016-05-31 | Corporacion Para La Investigacion Y Desarrollo De Asfaltos En El Sector Transporte E Industrial-Corasfaltos | Asphalt modified with an SBS/MMWCNT nanocomposite and production method thereof |
| CN108948753A (en) * | 2017-05-17 | 2018-12-07 | 中路高科(北京)公路技术有限公司 | A kind of warm mix high adhered modification pitch and its preparation and application |
| CN108948753B (en) * | 2017-05-17 | 2021-03-16 | 中路高科(北京)公路技术有限公司 | Warm-mixed high-viscosity modified asphalt and preparation and application thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN108690359A (en) * | 2018-06-04 | 2018-10-23 | 长安大学 | A kind of response type SBS compounding high-viscosity high-elasticity modified pitch and preparation method |
| CN111218121A (en) * | 2018-11-23 | 2020-06-02 | 中国石油天然气股份有限公司 | Polymer modified asphalt cement and preparation method thereof |
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