CN107189462A - A kind of preparation method of composite modified asphalt - Google Patents
A kind of preparation method of composite modified asphalt Download PDFInfo
- Publication number
- CN107189462A CN107189462A CN201710540816.7A CN201710540816A CN107189462A CN 107189462 A CN107189462 A CN 107189462A CN 201710540816 A CN201710540816 A CN 201710540816A CN 107189462 A CN107189462 A CN 107189462A
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- Prior art keywords
- composite
- asphalt
- heated
- modified asphalt
- modifier
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of preparation method of composite modified asphalt, the inorganic modifier polyphosphoric acids of 13 parts by weight is heated to 105 DEG C and is incubated, the organic modifiers styrene butadiene block copolymer of 24 parts by weight is heated to 65 DEG C, it is then added into the polyphosphoric acids of insulation, it is warming up to 120 DEG C, composite modifier is made until existing without obvious styrene butadiene block copolymer particle with 120r/min rotating speed stirring, the pitch of 100 parts by weight is heated to 135 DEG C, add asphalt composite modifier obtained above, composite modified asphalt is obtained with 500r/min rotating speed stirring 30min under the conditions of 135 DEG C.The SBS modified pitch high-temperature behavior and cryogenic property that composite modified asphalt produced by the present invention is prepared than conventional method are obviously improved, bin stability is remarkably improved, and preparation process eliminates the addition step of stabilizer, the heating-up temperature of production process is down to 135 DEG C by 190 DEG C, reduction production difficulty and production cost while saving the energy.
Description
Technical field
The invention belongs to pavement construction material technical field, and in particular to a kind of preparation method of composite modified asphalt.
Background technology
With the fast development of China's economy, traffic volume of highway increases year by year, to asphalt pavement material performance requirement also by
Gradually improve.The performance of matrix pitch tends not to meet the rigors of traffic environment and weather Condition on Asphalt Pavement material.
So need to be modified pitch using modifying agent, so that the pavement performance of pitch is improved, Styrene-Butadiene block copolymerization
Thing SBS has good mechanical property, has good modified effect to pitch, has turned into most commonly used in the world at present
Road asphalt modifier, line style is divided into from SBS structure and star-like two kinds, in general, the effect of SBS modified asphalt
Fruit is better than type SBS.
SBS modified pitch is, as dispersed phase, to pass through high molecular polymer modifying agent SBS in 160-180 DEG C of pitch
SBS, is distributed among continuous asphalt phase again by being swelled after development for certain time by colloid mill with certain uniform particle sizes
The system newly constituted.But, the modified pitch mode that this physical dispersion approach is realized so that SBS and the compole of pitch two-phase
Easily occur segregation phenomenon, and this phenomenon is even more serious during SBS modified asphalt preparation and use.Therefore, such as
What improves SBS dispersion effect and heat endurance in pitch, it is to avoid SBS modified pitch segregation phenomenons, as Study on Asphalt Modified
The important technological problems in field.In addition, SBS is as petroleum product, price is higher, reduction SBS consumptions on the basis of ensure and
Performance of modified bitumen is improved to be of great practical significance.
The content of the invention
Present invention solves the technical problem that there is provided a kind of preparation method of composite modified asphalt, pass through composite modifier
Material property and process characteristic improve modified pitch storage stability and pavement performance, while optimizing modified pitch production work
Skill, improves production efficiency, reduction production difficulty and production cost.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of preparation method of composite modified asphalt,
It is characterized in that concretely comprising the following steps：The inorganic modifier polyphosphoric acids of 1-3 parts by weight is heated to 105 DEG C and is incubated, by 2-4 weights
The organic modifiers styrene-butadiene block copolymer of amount part is heated to 65 DEG C, is then added into the poly phosphorus of insulation
In acid, 120 DEG C are warming up to, with 120r/min rotating speed stirring until being deposited without obvious styrene-butadiene block copolymer particle
In obtained composite modifier, the pitch of 100 parts by weight is heated to 135 DEG C, asphalt composite modifier obtained above is added,
Composite modified asphalt is obtained with 500r/min rotating speed stirring 30min under the conditions of 135 DEG C.
Further preferably, the styrene-butadiene block copolymer is star polymerization structure, and relative molecular mass is 15
Ten thousand -20 ten thousand.
The asphalt composite modifier of the present invention is used as inorganic modifying component and styrene-dibutene block by the use of polyphosphoric acids
On the one hand copolymer reduce SBS consumption as organically-modified component, and the performance synthesis of another aspect composite modifier is more
The mechanical property advantage of polyphosphoric acid and SBS, the asphalt composite modifier of preparation is directly added during modified pitch is produced,
The cumbersome process for avoiding distribution from adding, and the temperature in Modified Bitumen Production Procedure can be reduced and conventional shearing work is avoided
Skill.Meanwhile, polyphosphoric acids can be with drip with the SBS phosphate groups occurred on chemical reaction generation graft effect, SBS molecular structures
Active group in blue or green molecule reacts, and effectively improves the compatibility between composite modifier and pitch so that modified pitch
Storage stability greatly improve.
The present invention has the advantages that compared with prior art：
1st, organic modifiers SBS materials can improve the low temperature of modified pitch and anti-open in asphalt composite modifier of the invention
Fragility can improve the strength character of modified pitch with high temperature Rut resistance, inorganic modifier polyphosphoric acids；
2nd, the temperature in Modified Bitumen Production Procedure can be reduced by the use of asphalt composite modifier and avoids routine
Shears technique, the production cost of modified pitch is reduced to a certain extent；
3rd, asphalt composite modifier of the invention improves the compatibility between organic modifiers SBS and pitch, improves
The storage stability of SBS modified pitch；
4th, compared with the production technology of existing SBS modified pitch, present invention process is simple, modification time is short and significantly improves
The production efficiency of composite modified asphalt.
Embodiment
The above to the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment
The raw material composition and ratio of composite modified asphalt is shown in Table 1 in 1-5 of the embodiment of the present invention：
The raw material composition and ratio of the asphalt composite modifier of table 1
| Embodiment | Polyphosphoric acids (Kg) | SBS(Kg) | Pitch (Kg) |
| 1 | 2 | 2 | 100 |
| 2 | 2 | 3 | 100 |
| 3 | 2 | 4 | 100 |
| 4 | 1 | 3 | 100 |
| 5 | 3 | 3 | 100 |
The preparation method of composite modified asphalt is in 1-5 of the embodiment of the present invention：
A, according to above-mentioned raw materials composition and ratio prepare various raw materials respectively；
B, inorganic modifier polyphosphoric acids is heated to 105 DEG C and is incubated；
C, organic modifiers styrene-butadiene block copolymer SBS is heated to 65 DEG C, is then added into insulation
Polyphosphoric acids in, 120 DEG C are warming up to, with the stirring of 120r/min rotating speed until without obvious Styrene-Butadiene block copolymerization
Composition granule, which exists, is made asphalt composite modifier；
D, pitch is heated to 135 DEG C, adds asphalt composite modifier obtained above, under the conditions of 135 DEG C with
500r/min rotating speed stirring 30min obtains composite modified asphalt.
Comparative example
A, 100Kg pitches are heated to after 190 DEG C, add 4Kg organic modifiers styrene-butadiene block copolymers
SBS, is made with 200r/min rotating speed stirring 120min and is swelled SBS pitches and in 190 DEG C of insulations；
B, in being swelled in SBS pitches for insulation add 0.5Kg stabilizers and obtained with 200r/min rotating speed stirring 30min
Asphalt material；
C, using high-speed shearing machine gained asphalt material is sheared with 3500r/min speed, shear temperature is 190
DEG C, shear time is 30min, finally obtained SBS modified pitch.
Performance of modified bitumen is tested, so as to evaluate the impact of performance of composite modified asphalt of the present invention.According to《Highway
Engineering pitch and Asphalt Mixture Experiment code》T0605-2011 " bitumen ductility experiment ", T0605- in (JTG E20-2011)
2011 " bituminous softening-point test (ring and ball methods) " and T0661-2011 " polymer modified asphalt isolation test " test modification respectively
The following performance indications of pitch：5 DEG C of ductilities, softening point and bin stability.5 DEG C of ductility numerical value are more big, illustrate cryogenic property more
It is good；Soften point value more high, show that high-temperature behavior is better；Storage stability numerical value is more low, illustrates that storage stability performance is better.
Result of the test is shown in Table 2：
The performance test results of table 2
As shown in Table 2, composite modified asphalt produced by the present invention is than SBS modified pitch high-temperature behaviors prepared by conventional method
It is obviously improved with cryogenic property, bin stability is remarkably improved, and the preparation process of the present invention is eliminated
The addition step and high speed shear step of stabilizer, the heating-up temperature of Modified Bitumen Production Procedure are down to 135 DEG C, section by 190 DEG C
About the energy while reduction production difficulty and production cost, with prominent technical advantage.
Embodiment above describes general principle, principal character and the advantage of the present invention, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (2)
1. a kind of preparation method of composite modified asphalt, it is characterised in that concretely comprise the following steps：By the inorganic modifier of 1-3 parts by weight
Polyphosphoric acids is heated to 105 DEG C and is incubated, and the organic modifiers styrene-butadiene block copolymer of 2-4 parts by weight is heated
To 65 DEG C, it is then added into the polyphosphoric acids of insulation, is warming up to 120 DEG C, with 120r/min rotating speed stirring until nothing
Obvious styrene-butadiene block copolymer particle, which exists, is made composite modifier, and the pitch of 100 parts by weight is heated into 135
DEG C, asphalt composite modifier obtained above is added, is obtained under the conditions of 135 DEG C with 500r/min rotating speed stirring 30min
Composite modified asphalt.
2. the preparation method of composite modified asphalt according to claim 1, it is characterised in that：The styrene-butadiene
Block copolymer is star polymerization structure, and relative molecular mass is 150,000-20 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540816.7A CN107189462B (en) | 2017-07-05 | 2017-07-05 | A kind of preparation method of composite modified asphalt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540816.7A CN107189462B (en) | 2017-07-05 | 2017-07-05 | A kind of preparation method of composite modified asphalt |
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| Publication Number | Publication Date |
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| CN107189462A true CN107189462A (en) | 2017-09-22 |
| CN107189462B CN107189462B (en) | 2019-11-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107641328A (en) * | 2017-10-22 | 2018-01-30 | 长沙秋点兵信息科技有限公司 | A kind of asphalt modifier, asphalt and preparation method thereof |
| CN110218463A (en) * | 2019-07-16 | 2019-09-10 | 黄河三角洲京博化工研究院有限公司 | A kind of modified pitch and preparation method thereof |
Citations (8)
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| WO2006009793A1 (en) * | 2004-06-23 | 2006-01-26 | Icl Performance Products Lp | Strip resistant asphalt paving composition and method |
| US20070275161A1 (en) * | 2004-10-22 | 2007-11-29 | Fina Technology, Inc. | Use of inorganic acids with crosslinking agents in polymer modified asphalts |
| US20090054562A1 (en) * | 2005-05-02 | 2009-02-26 | Jean-Valery Martin | Modified Asphalt Binder Material Using Crumb Rubber And Methods Of Manufacturing A Modified Asphalt Binder |
| US20090053405A1 (en) * | 2005-05-03 | 2009-02-26 | Jean-Valery Martin | Modified asphalt binder material using crosslinked crumb rubber and methods of manufacturing the modified asphalt binder |
| WO2010148327A1 (en) * | 2009-06-19 | 2010-12-23 | Innophos, Inc. | Reclaimed asphalt pavement containing polyphosphoric acid modified binder |
| CN102585525A (en) * | 2012-01-12 | 2012-07-18 | 山东华瑞道路材料技术有限公司 | SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage and preparation process thereof |
| CN103305014A (en) * | 2013-05-06 | 2013-09-18 | 中海油（青岛）重质油加工工程技术研究中心有限公司 | SBS (stimulated brillouin scattering) modified asphalt and preparation method thereof |
| CN103773008A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | High-viscosity modified asphalt and preparation method thereof |
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2017
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| WO2006009793A1 (en) * | 2004-06-23 | 2006-01-26 | Icl Performance Products Lp | Strip resistant asphalt paving composition and method |
| US20070275161A1 (en) * | 2004-10-22 | 2007-11-29 | Fina Technology, Inc. | Use of inorganic acids with crosslinking agents in polymer modified asphalts |
| US20090054562A1 (en) * | 2005-05-02 | 2009-02-26 | Jean-Valery Martin | Modified Asphalt Binder Material Using Crumb Rubber And Methods Of Manufacturing A Modified Asphalt Binder |
| US20090053405A1 (en) * | 2005-05-03 | 2009-02-26 | Jean-Valery Martin | Modified asphalt binder material using crosslinked crumb rubber and methods of manufacturing the modified asphalt binder |
| WO2010148327A1 (en) * | 2009-06-19 | 2010-12-23 | Innophos, Inc. | Reclaimed asphalt pavement containing polyphosphoric acid modified binder |
| CN102585525A (en) * | 2012-01-12 | 2012-07-18 | 山东华瑞道路材料技术有限公司 | SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage and preparation process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107641328A (en) * | 2017-10-22 | 2018-01-30 | 长沙秋点兵信息科技有限公司 | A kind of asphalt modifier, asphalt and preparation method thereof |
| CN110218463A (en) * | 2019-07-16 | 2019-09-10 | 黄河三角洲京博化工研究院有限公司 | A kind of modified pitch and preparation method thereof |
| CN110218463B (en) * | 2019-07-16 | 2021-09-21 | 黄河三角洲京博化工研究院有限公司 | Modified asphalt and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN107189462B (en) | 2019-11-01 |
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