CN1990594A - Modified asphalt material capable of improving workability - Google Patents
Modified asphalt material capable of improving workability Download PDFInfo
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- CN1990594A CN1990594A CN 200510112344 CN200510112344A CN1990594A CN 1990594 A CN1990594 A CN 1990594A CN 200510112344 CN200510112344 CN 200510112344 CN 200510112344 A CN200510112344 A CN 200510112344A CN 1990594 A CN1990594 A CN 1990594A
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- modified asphalt
- sbr
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- asphalt material
- petroleum resin
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Abstract
The invention relates to a modified asphalt material capable of improving workability, which comprises asphalt, SBR, polyethylene wax, polypropylene wax and petroleum resin, wherein the content of SBR is 0.5-10 wt% of asphalt, the content of polyethylene wax is 1-6 wt% of the asphalt, the content of polypropylene wax is 0.5-4 wt% of the asphalt, the content of petroleum resin is 5-20 wt% of the asphalt. Compared with the conventional modifying methods, the invention can achieve better high temperature and low temperature property, stabilized storage, and simplified manufacturing techniques. in addition, because of the admission of petroleum resin, the adhesiveness of the asphalt with stone-like materials is increased.
Description
Technical field
The present invention relates to a kind of modified asphalt material technical field that improves 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 raising of high-temperature behavior.Chinese patent CN1287133A discloses the method that adopts SBR and SBS composite modified asphalt, 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, its properties-correcting agent is made up of styrene-butadiene rubber(SBR) (SBR), polyethylene wax, Poly Propylene Wax and petroleum resin, can require to change the weight proportion of SBR, polyethylene wax, Poly Propylene Wax and petroleum resin according to actual road surface.
The modified asphalt material of raising workability of the present invention, form by pitch, SBR, polyethylene wax, Poly Propylene Wax and petroleum resin, wherein SBR content is the 0.5%-10% of pitch weight, polyethylene wax content is the 1%-6% of pitch weight, Poly Propylene Wax content is 0.5%～4% of pitch weight, and petroleum resin content is 5%～20% of pitch weight.
The modified asphalt material of raising workability of the present invention, its medium pitch are various petroleum pitch.
The modified asphalt material of raising 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 modified asphalt material of raising workability of the present invention, wherein polyethylene wax and Poly Propylene Wax are meant that molecular-weight average is at 500-15000, softening temperature is at 90-160 ℃ polyethylene wax, and more excellent is molecular-weight average is at 3000-6000, and softening temperature is at 120-150 ℃ polyethylene wax.
The modified asphalt material of raising workability of the present invention, wherein petroleum resin are meant softening temperature at 70-150 ℃ petroleum resin, more excellent is softening temperature is at 90-115 ℃ petroleum resin.
The production method of the modified asphalt material of raising workability of the present invention is such: pitch is heated to about 110-200 ℃ earlier to mobile fully, then polyethylene wax, Poly Propylene Wax, petroleum resin, SBR are joined in the pitch by weight and mixed 30-480 minute, treat to get final product after polyethylene wax, 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 mixed a certain amount of petroleum resin, the adhesivity of pitch and building stones also improves a lot.
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, contain the solid glue of 22%SBR) slowly add, starting whipping device simultaneously slowly stirs, continuing heating sloughs the water in the SBR emulsion, after after water is sloughed the bituminous temperature slowly being risen to 180 ℃, add 10g polyethylene wax and 10g Poly Propylene Wax (Thailand polyethylene company limited (TPE) production, LP1100P) and 45g 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 |
| Polyethylene wax, g | 10 | 0 |
| Poly Propylene Wax, g | 10 | 0 |
| Petroleum resin, g | 45 | 0 |
| The SBR emulsion, g | 80 | 25 |
| Penetration degree, dmm@25 ℃ | 53 | 61 |
| Softening temperature, ℃ @5 ℃/min | 55.0 | 47.5 |
| Ductility, cm@5 ℃, 5cm/min | 55 | 65 |
| 135 ℃ of kinematic viscosity, Pa.S | 0.60 | 1.3 |
| 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 ℃, and 135 ℃ of viscosity reduce, and illustrate that the modifying asphalt of the present invention's preparation has excellent high and workability.
Claims (7)
1, a kind of modified asphalt material that improves workability, form by pitch, SBR, polyethylene wax, Poly Propylene Wax and petroleum resin, wherein SBR content is the 0.5%-10% of pitch weight, polyethylene wax content is the 1%-6% of pitch weight, Poly Propylene Wax content is 0.5%～4% of pitch weight, and petroleum resin content is 5%～20% of pitch weight.
2, the modified asphalt material of raising workability as claimed in claim 1 is characterized in that: the content of SBR is the 1%-5% of pitch weight.
3, the modified asphalt material of raising workability as claimed in claim 1 is characterized in that: SBR is the emulsion polymerized styrene butadiene rubber of homemade various series, as 1000,1100,1500,1600,1700,1800 series.
4, the modified asphalt material of raising workability as claimed in claim 1 is characterized in that: the molecular-weight average of polyethylene wax and Poly Propylene Wax is 500-15000, and softening temperature is 90-160 ℃.
5, the modified asphalt material of raising workability as claimed in claim 4 is characterized in that: the molecular-weight average of polyethylene wax and Poly Propylene Wax is 3000-6000, and softening temperature is 120-150 ℃.
6, the modified asphalt material of raising workability as claimed in claim 1 is characterized in that: the softening temperature of petroleum resin is at 70-150 ℃.
7, the modified asphalt material of raising workability as claimed in claim 1 is characterized in that: the softening temperature of petroleum resin is 90-115 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112344 CN1990594A (en) | 2005-12-29 | 2005-12-29 | Modified asphalt material capable of improving workability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112344 CN1990594A (en) | 2005-12-29 | 2005-12-29 | Modified asphalt material capable of improving workability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1990594A true CN1990594A (en) | 2007-07-04 |
Family
ID=38213145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510112344 Pending CN1990594A (en) | 2005-12-29 | 2005-12-29 | Modified asphalt material capable of improving workability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1990594A (en) |
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2005
- 2005-12-29 CN CN 200510112344 patent/CN1990594A/en active Pending
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