CN103773008B - A kind of high-viscosity modified asphalt and preparation method thereof - Google Patents
A kind of high-viscosity modified asphalt and preparation method thereof Download PDFInfo
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- CN103773008B CN103773008B CN201210411140.9A CN201210411140A CN103773008B CN 103773008 B CN103773008 B CN 103773008B CN 201210411140 A CN201210411140 A CN 201210411140A CN 103773008 B CN103773008 B CN 103773008B
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Abstract
The invention discloses a kind of high-viscosity modified asphalt and preparation method thereof, high-viscosity modified asphalt comprises following component by weight: matrix pitch 100 parts, increases and prolongs agent 0.5 ~ 1.2 part, aromatic hydrocarbon oil 3 ~ 6 parts, chemical modifier 0.5 ~ 1.5 part, chemical additive 0.1 ~ 1 part; Wherein chemical modifier is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.Preparation method comprises following content: increasing is prolonged agent and mixed with aromatic hydrocarbon oil by (1), is prepared into increasing and prolongs agent mother liquor; (2) increasing is prolonged agent mother liquor, chemical modifier, chemical additive and matrix pitch hybrid reaction, i.e. obtained high-viscosity modified asphalt.High-viscosity modified asphalt of the present invention, stability in storage is good, 60 DEG C of viscosity are high, and with low cost, and preparation method is simple, is easy to construction.
Description
Technical field
The present invention relates to a kind of high-viscosity modified asphalt and preparation method thereof, be specifically related to a kind of adopt chemical modification method to prepare high-viscosity modified asphalt and method.
Background technology
When high-viscosity modified asphalt refers to 60 DEG C, the absolute viscosity of pitch is greater than the modifying asphalt of 20000Pas, because it has good high-temperature stability, low-temperature cracking-resistance, oxidation-resistance and good construction workability, be widely used in multi-porous permeable type bituminous pavement (OGFC) and stone matrix asphalt mixture (SMA) road surface.Polymer modification at present mainly through adding relatively large (8% ~ 12%) in petroleum pitch obtains.Add polymkeric substance and modification is carried out to petroleum pitch, obviously can improve the high and low temperature performance of pitch, the high temperature Rut resistance of bituminous pavement, low temperature cracking resistance ability are provided.But, owing to there is the difference such as molecular weight, viscosity between polymkeric substance and pitch, make polymer modified asphalt difficulties in dispersion.Meanwhile, because most polymers and pitch can not be completely compatible, and there is density difference, cause modifying asphalt system so a large amount of polymkeric substance adds membership at high temperature storage stability is bad, easy layering, affects asphalt quality and normal construction.Tradition high-viscosity modified asphalt is in advance through high temperature, high shear forces Preparation and storage, is then transported to working-yard and uses, have higher requirement like this to the stability in storage of high-viscosity modified asphalt.
CN101538408A discloses a kind of asphaltum with high viscosity and preparation method thereof, wherein high-viscosity modified asphalt is made up of 100 parts of No. 70 pitches, 4 ~ 12 parts of thermoplastic elastomers, 2 ~ 80 parts of thermoplastic resins, 1 ~ 10 part of compatilizer, 8 ~ 40 parts of adjusting adhesives and 0.5 ~ 4 part of comprehensive anti-aging agent, this patent improves the compatilizer between pitch and polymkeric substance by the compatilizer adding high fragrance point content, improves the viscosity of pitch by adding adjusting adhesive petroleum resin and reduces the consumption of polymkeric substance.
CN1990563A and CN102093728A individually discloses a kind of preparation method of asphaltum with high viscosity, the two is also adopt to add petroleum resin, obtain good dispersiveness and the high-viscosity modified asphalt of stability, the add-on of polymkeric substance and petroleum resin is still very large.CN101613515A discloses a kind of high viscosity high elasticity asphalt modifier and preparation method thereof, and this patent also improves the stability of polymkeric substance in pitch by adding sulphur.
Although take diverse ways in above patent to improve compatibility problem between polymkeric substance and pitch, the add-on of polymkeric substance is not obviously reduced, and does not still fundamentally solve compatibility problem.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of high-viscosity modified asphalt and preparation method thereof.The present invention adopts the method for chemical modification to prepare high-viscosity modified asphalt, improves the stability in storage of high-viscosity modified asphalt, 60 DEG C of viscosity are high, and with low cost, and preparation method is simple, is easy to construction.
High-viscosity modified asphalt of the present invention, comprises following component by weight: with matrix pitch 100 parts for benchmark, increases and prolongs agent 0.5 ~ 1.2 part, aromatic hydrocarbon oil 3 ~ 6 parts, chemical modifier 0.5 ~ 1.5 part, chemical additive 0.1 ~ 1 part.
Matrix pitch of the present invention is petroleum pitch, and comprise one or more in straight-run pitch, oxidized bitumen or solvent deoiling pitch, its penetration degree is 60 ~ 801/10mm.
In the inventive method, it is one or more in natural rubber (NR), styrene-butadiene rubber(SBR) (SBR), chloroprene rubber (CR), SBS (SBS), SIS (SIS) or Polystyrene-Polyethylene-polybutene-polystyrene block copolymer (SEBS) that agent is prolonged in described increasing.
Aromatic hydrocarbons oil viscosity of the present invention is 20 ~ 50(100 DEG C of kinematic viscosity, mm
2/ s), aromatics quality content>=80% can be aromatic base rubber filling oil, be rich in refining one or more of reduced pressure distillate wet goods extracting oil and naphthenic base crude out of aromatic hydrocarbons.
Chemical modifier of the present invention is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.
Chemical additive of the present invention be Urea,amino-, one or more in thiosemicarbazide, benzamido urea or semicarbazide derivative.
High-viscosity modified asphalt of the present invention can also need to add other additive according to application, as antistripping agent, fire retardant and antiaging agent etc.
The preparation method of high-viscosity modified asphalt of the present invention, comprises following content: increasing is prolonged agent and mixed with aromatic hydrocarbon oil by (1), is prepared into increasing and prolongs agent mother liquor; (2) increasing is prolonged agent mother liquor, chemical modifier, chemical additive and matrix pitch hybrid reaction, i.e. obtained high-viscosity modified asphalt.
The inventive method preferably adds partial chemical modification agent in step (1), in step (2), add residue chemical modifier.Wherein step (1) adds 10% ~ 20% of chemical modifier total mass.
In the inventive method, step (1) and step (2) can adopt stirring, shearing, Screw Extrusion or the hybrid mode such as ultrasonic.The mixing temperature of step (1) is 70 ~ 120 DEG C, and mixing time is 20 ~ 80 minutes, and the mixing temperature of step (2) is 120 ~ 180 DEG C, and mixing time is 20 ~ 120 minutes.
Compared with prior art, advantage of the present invention is as follows:
1, do not need in high-viscosity modified asphalt of the present invention to add a large amount of superpolymer, obtained by the method for chemical modification, considerably reduce the effective level (polymer loading is less than 1%) of polymkeric substance, significantly improve the problem of pitch and polymer compatibility, reduce cost, preparation method is simple, is easy to construction.
2, the present invention prepares the chemical modifier increasing and add part when prolonging agent mother liquor, effectively modification can increase the performance of prolonging agent mother liquor, under the katalysis of chemical modifier, increasing is prolonged agent and can be effectively combined with aromatic hydrocarbon oil, make increasing prolong agent to be dissolved in more fully in aromatic hydrocarbon oil, do not emanate.Chemical modifier can improve the viscosity increasing and prolong agent mother liquor simultaneously, more effectively improves the modification power increasing and prolong agent.
3, chemical modifier of the present invention and combination with polymers modifying asphalt can improve the performance of pitch effectively; the groups such as the acylhydrazine simultaneously in chemical additive under the katalysis of chemical modifier can and pitch in the generation condensation reaction such as hydroxy-acid group; greatly increase the viscosity of pitch, improve the high-temperature behavior of pitch.
4, high-viscosity modified asphalt of the present invention 60 DEG C of kinetic viscosities are greater than 60000Pas, and viscosity ratio is less than 5, have excellent high temperature resistance to flow can and low temperature use properties and resistance to deterioration.
Embodiment
Now describe the present invention in conjunction with specific embodiments, but therefore do not limit the present invention.Wherein polyphosphoric acid, commercially available, purity by weight 84%; Polyphosphoric acid amine, commercially available, purity by weight 96%.
Embodiment 1
(1) by SBR and aromatic hydrocarbon oil, under 70 DEG C of conditions, with high emulsification shears (1500 ~ 3000r/min), shear 40 minutes, be prepared into increasing and prolong agent mother liquor.
(2) increasing that step (1) is obtained is prolonged agent mother liquor, polyphosphoric acid amine and thiosemicarbazide and is joined in 70# pitch, and temperature is 130 DEG C, stirring reaction 60 minutes, i.e. obtained high-viscosity modified asphalt.Proportioning raw materials and product characteristics are in table 1.
Embodiment 2
(1) by SBS(YH-791), part polyphosphoric acid and aromatic hydrocarbon oil, under 80 DEG C of conditions, with high emulsification shears (1500 ~ 3000r/min), shear 50 minutes, be prepared into increasing and prolong agent mother liquor.Wherein step (1) adds 15% of polyphosphoric acid quality.
(2) agent mother liquor is prolonged in the increasing that step (1) is obtained, residue polyphosphoric acid, Urea,amino-join in 70# pitch, and temperature is 140 DEG C, stirring reaction 60 minutes, i.e. obtained high-viscosity modified asphalt.Proportioning raw materials and product characteristics are in table 1.
Embodiment 3
(1) by SBR, part polyphosphoric acid and aromatic hydrocarbon oil, under 70 DEG C of conditions, with high emulsification shears (1500 ~ 3000r/min), shear 50 minutes, be prepared into increasing and prolong agent mother liquor.Wherein step (1) adds 18% of polyphosphoric acid quality.
(2) agent mother liquor is prolonged in the increasing that step (1) is obtained, residue polyphosphoric acid, Urea,amino-join in 70# pitch, and temperature is 150 DEG C, stirring reaction 60 minutes, i.e. obtained high-viscosity modified asphalt.Proportioning raw materials and product characteristics are in table 1.
Comparative example 1
(1) added by SBR in aromatic hydrocarbon oil under high emulsification shears, temperature is 70 DEG C, shears 40 minutes, and agent mother liquor is prolonged in preparation increasing.
(2) agent mother liquor is prolonged in increasing obtained for step (1), polyphosphoric acid amine joins in 70# pitch, temperature is 130 DEG C, react 60 minutes, obtains high-viscosity modified asphalt.Proportioning raw materials and product characteristics are in table 1.
The proportioning of table 1 high-viscosity modified asphalt raw material and character.
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Increase and prolong agent, part | 0.7 | 0.9 | 1.1 | 0.8 |
| Chemical modifier, part | 0.6 | 1.2 | 0.8 | 0.9 |
| Aromatic hydrocarbon oil, part | 4 | 5 | 6 | 5 |
| Chemical additive, part | 0.2 | 0.4 | 0.6 | — |
| Pitch, part | 100 | 100 | 100 | 100 |
| Penetration degree (25 DEG C), 1/10mm | 48 | 42 | 44 | 42 |
| Softening temperature, DEG C | 83 | 85 | 81 | 83 |
| Ductility (10 DEG C), cm | 121 | 128 | 131 | 96 |
| 60 DEG C of kinetic viscosities, Pa.s | 63512 | 84769 | 90243 | 18423 |
Table 1(continues) proportioning of high-viscosity modified asphalt raw material and character.
| Segregation (163 DEG C, 8h), softening point difference, DEG C | 1.1 | 0.8 | 0.7 | 1.9 |
| Thin Film Oven Test TFOT | ||||
| Penetration ratio, % | 82 | 83 | 85 | 81 |
| Ductility (10 DEG C), cm | 15 | 12 | 15 | 5 |
| Viscosity ratio, % | 4.0 | 3.5 | 3.0 | 5.2 |
As can be seen from the above table, what adopt the high-viscosity modified asphalt prepared of present method has good preservation stability, and 60 DEG C of kinetic viscosities are greater than 60000Pas, and viscosity ratio is less than 5, have excellent high temperature resistance to flow can and low temperature use properties and resistance to deterioration.
Claims (9)
1. a high-viscosity modified asphalt, high-viscosity modified asphalt comprises following component by weight: with matrix pitch 100 parts for benchmark, increases and prolongs agent 0.5 ~ 1.2 part, aromatic hydrocarbon oil 3 ~ 6 parts, chemical modifier 0.5 ~ 1.5 part, chemical additive 0.1 ~ 1 part; Wherein chemical modifier is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine; Described chemical additive be Urea,amino-, one or more in thiosemicarbazide, benzamido urea or semicarbazide derivative.
2. according to high-viscosity modified asphalt according to claim 1, it is characterized in that: described matrix pitch is petroleum pitch, comprise in straight-run pitch, oxidized bitumen or solvent deoiling pitch one or more, its penetration degree is 60 ~ 801/10mm.
3. according to high-viscosity modified asphalt according to claim 1, it is characterized in that: it is one or more in natural rubber, styrene-butadiene rubber(SBR), chloroprene rubber, SBS, SIS or Polystyrene-Polyethylene-polybutene-polystyrene block copolymer that agent is prolonged in described increasing.
4. according to high-viscosity modified asphalt according to claim 1, it is characterized in that: 100 DEG C of kinematic viscosity of described aromatic hydrocarbon oil are 20 ~ 50mm
2/ s, aromatics quality content>=80%, derive from aromatic base rubber filling oil, be rich in aromatic hydrocarbons refining extract out oil and naphthenic base crude vacuum distillate in one or more.
5. according to high-viscosity modified asphalt according to claim 1, it is characterized in that: high-viscosity modified asphalt adds one or more in antistripping agent, fire retardant and antiaging agent.
6. a preparation method for high-viscosity modified asphalt according to claim 1, is characterized in that comprising following content: increasing is prolonged agent and mixed with aromatic hydrocarbon oil by (1), makes increasing and prolongs agent mother liquor; (2) increasing is prolonged agent mother liquor, chemical modifier, chemical additive and matrix pitch hybrid reaction, i.e. obtained high-viscosity modified asphalt.
7. according to preparation method according to claim 6, it is characterized in that: add partial chemical modification agent in step (1), in step (2), add residue chemical modifier, wherein step (1) adds 10% ~ 20% of chemical modifier total mass.
8., according to preparation method according to claim 6, it is characterized in that: the hybrid mode that step (1) and step (2) adopt be stir, shear, Screw Extrusion or ultrasonic in one or more.
9. according to preparation method according to claim 6, it is characterized in that: the mixing temperature of step (1) is 70 ~ 120 DEG C, and mixing time is 20 ~ 80 minutes, the mixing temperature of step (2) is 120 ~ 180 DEG C, and mixing time is 20 ~ 120 minutes.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105273417B (en) * | 2014-06-03 | 2018-06-12 | 上海全凯新材料科技有限公司 | Agent and preparation method thereof and a kind of modified pitch are prolonged in a kind of modified pitch increasing |
| CN105524475A (en) * | 2014-09-30 | 2016-04-27 | 北京路新大成景观建筑工程有限公司 | Flexible asphalt, preparation method therefor, road pavement material and road |
| CN105585854B (en) * | 2014-10-22 | 2019-03-19 | 中国石油化工股份有限公司 | A kind of high-viscosity modified asphalt and preparation method thereof for being easy to construct |
| CN107189462B (en) * | 2017-07-05 | 2019-11-01 | 河南师范大学 | A kind of preparation method of composite modified asphalt |
| CN107163599B (en) * | 2017-07-05 | 2019-07-23 | 河南师范大学 | A kind of preparation method of road and bridge coiled material modified pitch |
| CN107715777B (en) * | 2017-08-21 | 2019-10-15 | 宁波中金石化有限公司 | A kind of manufacturing equipment and preparation method of multifunctional modification aromatic hydrocarbons |
| CN108129862A (en) * | 2018-01-12 | 2018-06-08 | 黄河三角洲京博化工研究院有限公司 | The preparation method of pitch age-inhibiting addition and preparation method thereof, modified pitch |
| CN109810522A (en) * | 2019-01-17 | 2019-05-28 | 南通市港闸市政开发区道路工程有限公司 | A kind of cracks with high viscous asphalt and preparation method thereof |
| CN110484009A (en) * | 2019-09-05 | 2019-11-22 | 黄河三角洲京博化工研究院有限公司 | No. 110 bi tumenf orr oads of one kind and preparation method thereof |
| CN110698870A (en) * | 2019-11-19 | 2020-01-17 | 长安大学 | Storable high-modulus asphalt binder and preparation method thereof |
| CN111978750B (en) | 2020-09-08 | 2022-11-08 | 福州大学 | High-toughness SBS/SBR polyphosphoric acid composite modified asphalt and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091339A1 (en) * | 2002-04-24 | 2003-11-06 | Asahi Kasei Chemicals Corporation | Asphalt composition |
| CN101250328A (en) * | 2008-04-10 | 2008-08-27 | 华东理工大学 | Waste and old rubber modified asphalt |
| CN101492570A (en) * | 2008-01-23 | 2009-07-29 | 中国石油化工股份有限公司 | Hard road bitumen compositions and preparation process |
| 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 |
-
2012
- 2012-10-25 CN CN201210411140.9A patent/CN103773008B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091339A1 (en) * | 2002-04-24 | 2003-11-06 | Asahi Kasei Chemicals Corporation | Asphalt composition |
| CN101492570A (en) * | 2008-01-23 | 2009-07-29 | 中国石油化工股份有限公司 | Hard road bitumen compositions and preparation process |
| CN101250328A (en) * | 2008-04-10 | 2008-08-27 | 华东理工大学 | Waste and old rubber modified asphalt |
| 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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