CN1990570A - Composite modified asphalt material capable of improving workability - Google Patents
Composite modified asphalt material capable of improving workability Download PDFInfo
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- CN1990570A CN1990570A CN 200510112320 CN200510112320A CN1990570A CN 1990570 A CN1990570 A CN 1990570A CN 200510112320 CN200510112320 CN 200510112320 CN 200510112320 A CN200510112320 A CN 200510112320A CN 1990570 A CN1990570 A CN 1990570A
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- modified asphalt
- sbr
- composite modified
- asphalt material
- petroleum resin
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Abstract
The invention relates to a composite modified asphalt material capable of improving workability, which comprises asphalt, SBR, polypropylene wax and petroleum resin, wherein the content of SBR is 0.5-10 wt% of asphalt, the content of polypropylene wax is 1-5 wt% of the asphalt, the content of petroleum resin is 530 wt% of the asphalt. Compared with the conventional modifying methods, the invention can achieve better high temperature and low temperature property, improved workability, stabilized storage, and simplified manufacturing techniques. in addition, because of the admission of petroleum resin, the adhesiveness of the inventive modified asphalt with stone-like materials is increased.
Description
Technical field
The present invention relates to a kind of composite modified asphalt material technical field of improving workability.
Background technology
The interpolation polymkeric substance is used for improving the bituminous performance and has decades in pitch, and U.S. Pat 5002987 has been reported with styrene-butadiene rubber(SBR) and improved the bituminous performance, but butylbenzene rubber mainly improves the bituminous low-temperature performance, and is not obvious to the improvement of high-temperature behavior.Chinese patent CN1287133A discloses the method that adopts SBR and SBS composite modified asphalt material, but the shortcoming of this method is owing to adopted SBS, its processing units needs colloidal mill, production technique is comparatively complicated, simultaneously because to wherein having added sulphur, can produce deleterious hydrogen sulfide in process of production, environment is had pollution.
Summary of the invention
The object of the present invention is to provide and a kind ofly can improve bituminous workability, high-temperature behavior and low-temperature performance composite modified asphalt material simultaneously.
The present invention is a kind of modifying asphalt that is used for road, and its properties-correcting agent is made up of styrene-butadiene rubber(SBR) (SBR), Poly Propylene Wax.These two kinds of components can require to change the weight proportion of SBR and Poly Propylene Wax according to actual road surface,
The composite modified asphalt material that improves workability of the present invention, form by pitch, SBR, Poly Propylene Wax and petroleum resin, wherein SBR content is the 0.5%-10% of pitch weight, Poly Propylene Wax content is the 1%-5% of pitch weight, and petroleum resin content is 5%～30% of pitch weight.
The composite modified asphalt material that improves workability of the present invention, its medium pitch are various petroleum pitch.
The composite modified asphalt material that improves workability of the present invention, wherein the content of SBR is preferably the 1%-5% of pitch weight.SBR can be the emulsion polymerized styrene butadiene rubber of the various series of home-made, as 1000,1100,1500,1600,1700,1800 series etc., is preferably not carbon black-filled rubber, i.e. 1000,1500 series.
The composite modified asphalt material that improves workability of the present invention, wherein Poly Propylene Wax is meant that molecular-weight average is at 500-15000, softening temperature is at 90-160 ℃ Poly Propylene Wax, and more excellent is molecular-weight average is at 3000-6000, and softening temperature is at 120-150 ℃ Poly Propylene Wax.
The composite modified asphalt that improves workability of the present invention, wherein the content of petroleum resin is preferably 10%～20% of pitch weight.Petroleum resin are meant softening temperature at 70-150 ℃ petroleum resin, and more excellent is softening temperature is at 90-115 ℃ petroleum resin.
The production method of improving the composite modified asphalt material of workability of the present invention is such: pitch is heated to about 110-200 ℃ earlier to mobile fully, then Poly Propylene Wax, petroleum resin, SBR are joined in the pitch by above-mentioned weight ratio and mixed 30-480 minute, treat to get final product after Poly Propylene Wax, petroleum resin, SBR and pitch mix the modifying asphalt finished product.
Beneficial effect of the present invention: compare with method of modifying in the past, the present invention can improve bituminous high temperature and low-temperature performance, has improved workability, and storage-stability, and production technique is simple; In addition, owing to added petroleum resin, the adhesivity of modifying asphalt of the present invention and building stones is also very strong.
Embodiment
500g Maoming 90# pitch is heated down at 120 ℃, then with the 80gSBR emulsion (trade mark 1500, the outlet of Shandong Qilu Petrochemical company contains the solid glue of 22%SBR) slowly add, start whipping device simultaneously and slowly stir, continuing heating sloughs the water in the SBR emulsion, after after water is sloughed the bituminous temperature slowly being risen to 180 ℃, add 10g Poly Propylene Wax and 50g petroleum resin, stir that SBR mixes fully after 45 minutes in pitch, obtain modifying asphalt, its character sees Table 1.
Comparative Examples 1
500g Maoming 90# pitch 180 ℃ of down heating, then with 80gSBR emulsion (trade mark 1500, the outlet of Shandong Qilu Petrochemical company contain the solid glue of 22%SBR), is stirred that SBR mixes fully after 45 minutes in pitch, obtain modifying asphalt, its character sees Table 1.
Table 1
| Numbering | Embodiment 1 | Comparative Examples 1 |
| Asphalt stock, g | ?500 | ?500 |
| Poly Propylene Wax, g | ?25 | ?0 |
| Petroleum resin, g | ?50 | ?0 |
| The SBR emulsion, g | ?80 | ?25 |
| Penetration degree, dmm@25 ℃ | ?53 | ?64 |
| Softening temperature, ℃ @5 ℃/min | ?56.0 | ?47.5 |
| Ductility, cm@5 ℃, 5cm/min | ?55 | ?65 |
| 135 ℃ of kinematic viscosity, Pa.S | ?0.60 | ?1.1 |
| Isolation test, ℃ | ?0.5 | ?0.5 |
| Water-boiling method | 3 grades | 5 grades |
As can be seen from Table 1, embodiments of the invention 1 road that all satisfies China regulation is with modifying asphalt index (i.e. " asphalt highway construction technique normalizing " JTJF40-2000; And its 135 ℃ of viscosity of the modifying asphalt of Comparative Examples 1 are very high, and softening temperature is very low, and the softening temperature of example 1 reaches 55 ℃, 135 ℃ of viscosity reduce, the modifying asphalt that the present invention's preparation is described has excellent high and workability, and simultaneously, the modifying asphalt of preparation can improve the adhesivity with building stones.
Claims (7)
1, a kind of composite modified asphalt material that improves workability, form by pitch, SBR, Poly Propylene Wax and petroleum resin, wherein SBR content is the 0.5%-10% of pitch weight, and Poly Propylene Wax content is the 1%-5% of pitch weight, and petroleum resin content is 5%～30% of pitch weight.
2, the composite modified asphalt material that improves workability as claimed in claim 1 is characterized in that, the content of SBR is the 1%-5% of pitch weight.
3, the composite modified asphalt material that improves workability as claimed in claim 1 is characterized in that, the molecular-weight average of Poly Propylene Wax is 500-15000, and softening temperature is at 90-160 ℃.
4, the composite modified asphalt material that improves workability as claimed in claim 3 is characterized in that, the molecular-weight average of Poly Propylene Wax is 3000-6000, and softening temperature is at 120-150 ℃.
5, the composite modified asphalt material that improves workability as claimed in claim 1 is characterized in that, SBR is the emulsion polymerized styrene butadiene rubber of homemade 1000,1100,1500,1600,1700,1800 series.
6, the composite modified asphalt material that improves workability as claimed in claim 5 is characterized in that, SBR is for being 1000,1500 not carbon black-filled serial rubbers.
7, the composite modified asphalt material that improves workability as claimed in claim 1 is characterized in that, petroleum resin content is 10%～20% of pitch weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112320 CN1990570A (en) | 2005-12-29 | 2005-12-29 | Composite modified asphalt material capable of improving workability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112320 CN1990570A (en) | 2005-12-29 | 2005-12-29 | Composite modified asphalt material capable of improving workability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1990570A true CN1990570A (en) | 2007-07-04 |
Family
ID=38213121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510112320 Pending CN1990570A (en) | 2005-12-29 | 2005-12-29 | Composite modified asphalt material capable of improving workability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1990570A (en) |
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2005
- 2005-12-29 CN CN 200510112320 patent/CN1990570A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |