CN101985524A - Compound SBS modified asphalt and preparation method thereof - Google Patents
Compound SBS modified asphalt and preparation method thereof Download PDFInfo
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- CN101985524A CN101985524A CN2010102558211A CN201010255821A CN101985524A CN 101985524 A CN101985524 A CN 101985524A CN 2010102558211 A CN2010102558211 A CN 2010102558211A CN 201010255821 A CN201010255821 A CN 201010255821A CN 101985524 A CN101985524 A CN 101985524A
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- sbs
- rubber powder
- modified asphalt
- asphalt
- mixture
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Abstract
The invention provides compound SBS modified asphalt and a preparation method thereof. The method comprises the following steps: metering petroleum asphalt, rapidly heating the petroleum asphalt to 170-180 DEG C and sending the petroleum asphalt to a mixer; metering and adding SBS polymers, rubber powder, coal tar, dimethylamino pyridine and butyl americium rubbers, and after the substances are mixed and fully swollen in the mixer, fully grinding the mixture in a colloid grinder to reach the required disperse mixed melt state; sending the ground mixture to a development tank, adding a stabilizing agent dibenzoic acid dibutyl tin and developing the mixture for 1h under stirring at 180 DEG C and low speed, thus obtaining the qualified product. The asphalt is prepared by mixing 42.3% of petroleum asphalt, 35% of rubber powder, 15% of coal tar, 2% of SBS polymers, 3% of dimethylamino pyridine, 2.5% of butyl americium rubbers and 0.2% of dibenzoic acid dibutyl tin. The rubber powder can be added at high proportion and the high/low temperature performance value and the storage stability of the finished product are improved.
Description
Technical field
The present invention relates to buildings waterproof and road-making material and manufacture method thereof, is SBS composite modified asphalt and preparation method thereof specifically.
Background technology
Along with the progress of society and the raising of the standard of living, automobile industry development is very rapid.The a large amount of junked tire of annual generation if junked tire is abandoned, will have a strong impact on environment for a long time owing to the erosion resistance of tire; If junked tire is burnt, the severe contamination air is caused public hazards.Therefore, dealing carefully with of a large amount of junked tires is the necessary a great problem that solves of current society.
Chinese patent literature CN200410040237.9, CN200810035847.8 etc. will carry out modification and utilization of waste material in addition to pitch after the junked tire desulfurization.
Chinese patent literature discloses a kind of " desulfurization glue powder-modified asphalt " (ZL03118863.X), this modifying asphalt is stirred by high speed shear under comparatively high temps by desulfurization rubber powder, pitch and compatilizer or the grinding of colloidal mill makes, its medium pitch accounts for 70～95% of raw material gross weight, the desulfurization rubber powder accounts for 5～30% of raw material gross weight, and phase solvent accounts for 0～1.5% of raw material gross weight.Compatilizer is epoxidized polybutadiene, glytidyl methacrylate, glycidyl methacrylate or maleic acid.
Summary of the invention
The purpose of this invention is to provide the SBS composite modified asphalt that a kind of high temperature performance is good, shelf characteric is good.
The object of the present invention is achieved like this: a kind of SBS composite modified asphalt, form by following raw material mixing by weight percentage:
Petroleum pitch 42.3%; Rubber powder 35%; Coal tar 15%; SBS polymkeric substance 2%; Dimethylamino pyridine 3%; Ding Americium glue 2.5%; Dibenzoic acid dibutyl tin 0.2%.
Another object of the present invention provides the preparation method of above-mentioned SBS composite modified asphalt.
Another object of the present invention is achieved in that a kind of preparation method of SBS composite modified asphalt, carries out according to the following steps:
A, petroleum pitch are warming up to by bitumenpump, mass flow meter and through the heat exchange system that is rapidly heated and are admitted to after 170～180 ℃ in the pre-mixing machine of shearing of low speed;
B, be metered into SBS polymkeric substance, rubber powder, coal tar, Dimethylamino pyridine and Ding Americium glue, in mixing machine, finish the abundant swelling of petroleum pitch the SBS polymkeric substance;
C, pre-mixing, swelling are after the stage, and mixture enters in the colloidal mill by bitumenpump and fully grinds, and are required the scattered mixing state that reaches to obtain;
D, the mixture after fully grinding are sent into through bitumenpump and are grown jar, add stablizer dibenzoic acid dibutyl tin, become qualified SBS composite modified asphalt product after growing 1 hour under 180 ℃ of temperature and the stirring at low speed.
Compared with prior art, technical superiority of the present invention has:
1, a high proportion of material modified admixture technology
In the aforementioned prior art, the additional proportion of damaged tire rubber powder in pitch is in 5.5%～42.8% scope, and promptly maximum additional proportion is 42.8%.And the damaged tire rubber powder is 82.7% to the bituminous additional proportion among the present invention, and usually, 10 tons of SBS composite modified asphalts of every production can utilize 3.5 tons of damaged tire rubber powders, has important environment protection significance to eliminating the damaged tire black pollution.
2, admixture damaged tire rubber powder in high proportion makes the wax content of road asphalt drop to the level that is lower than Imported Asphalt, has improved the road asphalt quality product greatly, and temperature applicable range expands to-40 ℃～90 ℃ from 5 ℃～45 ℃;
3,180 of finished product SBS composite modified asphalt ℃ of rotary viscosity values remain on 1.5～2.5Pa.s, and its liquidity scale is near petroleum pitch, and construction workability strengthens greatly, for the enforcement of admixture damaged tire rubber powder at high proportion provides feasibility.
The invention belongs to the further improvement to rubber modified asphalt (patent applied for), its superior high and low temperature performance has promoted two grades than rubber modified asphalt.
The present invention is mainly used in road construction work, especially the high-grade highway engineering.
Embodiment
Preparation embodiment:
Petroleum pitch is warming up to by bitumenpump, mass flow meter and through the heat exchange system that is rapidly heated and is admitted to after 170～180 ℃ in the pre-mixing machine of shearing of low speed; Be metered into SBS polymkeric substance, rubber powder, coal tar, Dimethylamino pyridine and Ding Americium glue, in mixing machine, finish the abundant swelling of petroleum pitch the SBS polymkeric substance; Pre-mixing, swelling are after the stage, and mixture enters in the colloidal mill by bitumenpump and fully grinds, and are required the scattered mixing state that reaches to obtain; Mixture after fully grinding is sent into through bitumenpump and is grown jar, adds stablizer dibenzoic acid dibutyl tin, becomes qualified SBS composite modified asphalt product after growing 1 hour under 180 ℃ of temperature and the stirring at low speed.This ratio is: petroleum pitch 42.3%; Rubber powder 35%; Coal tar 15%; SBS polymkeric substance 2%; Dimethylamino pyridine 3% (catalyzer); Ding Americium glue 2.5%; Dibenzoic acid dibutyl tin 0.2%.
Wherein, SBS is: vinylbenzene--divinyl--styrene block copolymer (thermoplastic elastomer).
Petroleum pitch (mid-temperature pitch): softening temperature (ring and ball method) ℃: 75～90 ℃.
Coal tar: be aromatic hydrocarbons and polynuclear aromatics and nitrogenous, oxygen, the mixture of the heteroaromatic hydrocarbon of sulphur.Outward appearance is black viscous liquid (or semi-solid).Proportion 1.18～1.23 is dissolved in benzene, ether, dithiocarbonic anhydride, chloroform, ethanol, acetone and methyl alcohol.Be slightly soluble in water.
Dimethylamino pyridine (being the 4-Dimethylamino pyridine): make by 4-chloropyridine and dimethylamine reaction.
SBS composite modified asphalt of the present invention (SBS-C) belongs to the upgrading products of rubber composite modified pitch (AR-C).
The present invention adds SBS polymkeric substance and patented technology additive and adjusts the producting proportion of associated additives on rubber composite modified pitch producting proportion basis, compare rubber composite modified pitch and promoting a grade aspect high-temperature behavior and the low-temperature performance.
It is as follows that the present invention (SBS-C) compares performance comparison test the results list of rubber composite modified pitch (AR-C):
Claims (2)
1. SBS composite modified asphalt is characterized in that: mixed by by weight percentage following raw material and form:
Petroleum pitch 42.3%; Rubber powder 35%; Coal tar 15%; SBS polymkeric substance 2%; Dimethylamino pyridine 3%; Ding Americium glue 2.5%; Dibenzoic acid dibutyl tin 0.2%.
One kind as power 1 described SBS composite modified asphalt the preparation method, it is characterized in that: carry out according to the following steps:
A, petroleum pitch are warming up to by bitumenpump, mass flow meter and through the heat exchange system that is rapidly heated and are admitted to after 170～180 ℃ in the pre-mixing machine of shearing of low speed;
B, be metered into SBS polymkeric substance, rubber powder, coal tar, Dimethylamino pyridine and Ding Americium glue, in mixing machine, finish the abundant swelling of petroleum pitch the SBS polymkeric substance;
C, pre-mixing, swelling are after the stage, and mixture enters in the colloidal mill by bitumenpump and fully grinds, and are required the scattered mixing state that reaches to obtain;
D, the mixture after fully grinding are sent into through bitumenpump and are grown jar, add stablizer dibenzoic acid dibutyl tin, become qualified SBS composite modified asphalt product after growing 1 hour under 180 ℃ of temperature and the stirring at low speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102558211A CN101985524A (en) | 2010-08-18 | 2010-08-18 | Compound SBS modified asphalt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102558211A CN101985524A (en) | 2010-08-18 | 2010-08-18 | Compound SBS modified asphalt and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101985524A true CN101985524A (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102558211A Pending CN101985524A (en) | 2010-08-18 | 2010-08-18 | Compound SBS modified asphalt and preparation method thereof |
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| CN (1) | CN101985524A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803885A (en) * | 2014-06-30 | 2016-07-27 | 上海浦东路桥建设股份有限公司 | Rubber modified asphalt fiber chip seal and pavement 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 |
| CN110204912A (en) * | 2019-06-24 | 2019-09-06 | 黑龙江省公路科学研究院 | A method of improving Oil Giants in Russian pitch low-temperature cracking-resistance |
-
2010
- 2010-08-18 CN CN2010102558211A patent/CN101985524A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803885A (en) * | 2014-06-30 | 2016-07-27 | 上海浦东路桥建设股份有限公司 | Rubber modified asphalt fiber chip seal and pavement method thereof |
| CN105926401A (en) * | 2014-06-30 | 2016-09-07 | 上海浦东路桥建设股份有限公司 | Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method |
| 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 |
| CN110204912A (en) * | 2019-06-24 | 2019-09-06 | 黑龙江省公路科学研究院 | A method of improving Oil Giants in Russian pitch low-temperature cracking-resistance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110316 |