CN104559267A - Preparation method of modified asphalt - Google Patents
Preparation method of modified asphalt Download PDFInfo
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- CN104559267A CN104559267A CN201510067095.3A CN201510067095A CN104559267A CN 104559267 A CN104559267 A CN 104559267A CN 201510067095 A CN201510067095 A CN 201510067095A CN 104559267 A CN104559267 A CN 104559267A
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Abstract
The invention discloses a preparation method of modified asphalt. The preparation method comprises the following steps: firstly mixing aromatic oil and asphalt raw materials to form matrix asphalt; secondly preparing a modified polymer by using star-type SBS rubber and polyethylene, adding diatomite to the modified polymer to form a compound modified polymer, adding the compound modified polymer to the matrix asphalt, and performing high-speed shear mixing at a high temperature, wherein the high temperature and low temperature resistances and the aging resistance of the asphalt are improved; after the initially modified asphalt is cooled, heating the initially modified asphalt, and simultaneously adding wood fibers or polyester fibers to the initially modified asphalt so as to improve the abrasion resistance of the asphalt; when the asphalt is gradually cooled, adding mica powder and calcium borate to the asphalt, stirring, cooling to 80-100 DEG C, and adding polybrominated cyclodecane, silicone resin and hydrated alumina to improve the flame retardancy and smoke suppression of the asphalt; finally adding a cationic emulsifier and an ammonium chloride stabilizer. Therefore, the surface property of the asphalt is improved, and the asphalt pavement and the later maintenance of the paveement are facilitated.
Description
Technical field
The invention relates to asphalt modification technical field, is specifically related to a kind of preparation method of modifying asphalt.
Background technology
Along with the high speed development of national economy, communications and transportation is also towards the future development of high speed, heavy duty, large discharge, and this not only requires that highway subgrade is solid, firm, but also requires that highway pavement possesses the performances such as wear-resisting, high temperature resistant, not softening, smooth, smooth.Use on high grade highway pavement at present and maximum remain bituminous pavement.Due to by the restriction of pitch self performance, i.e. the high and low temperature unstable properties of pitch, under the solar radiation of Zhang Lie, pitch is easily aging, makes the sandstone of highway pavement lose the effect of binding agent, thus produces rut, gathers around bag, loose and swag.Then easily there is slight crack in the winter of cold, have a strong impact on the work-ing life of highway.Therefore, be necessary to carry out technological improvement to existing pitch.
Summary of the invention
The object of the invention is avoid above-mentioned weak point of the prior art and provide a kind of preparation method that can improve the modifying asphalt of asphalt performance from many aspects.
The object of the invention is achieved through the following technical solutions:
Provide a kind of preparation method of modifying asphalt, comprise the following steps:
A. add to asphalt stock the aromatic hydrocarbon oil that weight is 4% of asphalt stock weight, be mixed into matrix pitch.
B. star-shaped sbs rubber to be mixed with the ratio of 1:1 with polyethylene, and at 150 ~ 180 DEG C, with the stirring velocity of 600r/min carry out being uniformly mixed be mixed with polymer-modified.With the addition of star-shaped sbs rubber and poly pitch can effectively improve its high and low temperature resistance and weathering resistance.
C. polymer-modifiedly to stir above-mentioned with the stirring velocity of the ratio of 1:2 with 600r/min at 150 ~ 180 DEG C with diatomite, and be mixed into composite modified polymkeric substance.Diatomite can improve the high and low temperature resistance of pitch equally, and it is anti-aging to help pitch, can reduce the volatilization of obnoxious flavour in pitch simultaneously.
D. while be incorporated as the above-mentioned composite modified polymkeric substance of 10% of matrix pitch weight to matrix pitch, while shear it with 1000r/min with high-speed shearing machine, after composite modified polymkeric substance all joins matrix pitch, at 180 ~ 200 DEG C, continue to shear with 2000r/min again, after continuing to shear 1h, naturally cool to 130 ~ 150 DEG C.
E. the above-mentioned pitch being cooled to 130 ~ 150 DEG C is heated to 220 DEG C gradually, in temperature-rise period, adds to it wood fibre or trevira that weight is 5% of matrix pitch weight, stir 30min.Interpolation wood fibre or trevira can promote the wear resistance of pitch.
F. pitch is lowered the temperature gradually from 220 DEG C, in temperature-fall period, adds the lime borate as metal oxide hydrate of the mica powder as inert filler of 5% of matrix pitch weight and 3% of matrix pitch weight, and stir to it.Mica powder can strengthen the characteristic of pitch, is added in pitch and it can be made better to mix with other components, and lime borate not only can be fire-retardant, can also press down cigarette.When pitch is cooled to 100 ~ 110 DEG C, add the hydrated aluminum oxide as smoke suppressant of the cyclodecane of the many bromines as halogenated flame retardant of 3% of matrix pitch weight, the silicone resin as silicon-series five-retardant of 3% of matrix pitch weight and 5% of matrix pitch weight, and shear with 3000r/min with high-speed shearing machine, shear history pitch can heat up gradually, and intensification can not more than 150 DEG C.Many bromines cyclodecane and silicone resin improve the flame retardant resistance of pitch, add hydrated aluminum oxide and can obtain desirable smoke suppressing effect.
G. in cationic emulsifier, hydrochloric acid additives is added and ammonium chloride stablizer mixes, blending ratio is 2:1:1, joins in pitch by the said mixture of 4% of matrix pitch weight, at 130 ~ 145 DEG C, stir 30min, after naturally cooling to 110 ~ 130 DEG C, namely obtain modifying asphalt.Cationic emulsifier and ammonium chloride stablizer can optimize asphalt surface performance, make the road surface spread with this modifying asphalt more be convenient to maintenance, when pavement maintenance, effectively improve construction effect.
Wherein, Following step D, before step e, can be further, at 130 ~ 150 DEG C, add the hexanolactam of 2% of matrix pitch weight to pitch, stir 30min, add again 3% of matrix pitch weight, fineness is 200 ~ 600 object sodium-based montmorillonites, under the rotating speed of 2000r/min after high-speed stirring 30min, reduce stirring velocity to 500r/min, keep temperature, continue to stir 1h, then carry out step e.Hexanolactam and base montmorillonite can improve the ageing-resistant performance of modifying asphalt further, thus extend the work-ing life of bituminous pavement.
The beneficial effect of the invention:
The preparation method of a kind of modifying asphalt of the invention, by adding multiple properties-correcting agent to pitch, coordinate special complete processing, the modifying asphalt adopting this preparation method to make is made to have excellent high and low temperature resistance, weathering resistance, flame retardant resistance, can promote asphalt surface performance, the road spread with this modifying asphalt is more smooth, smooth, and has wear resistance, energy anti-aging simultaneously, thus the work-ing life that greatly can extend the bituminous road adopting this modifying asphalt paving.
Embodiment
With the following Examples the invention is further described.
The preparation method of a kind of modifying asphalt of the invention, comprises the following steps:
First add to asphalt stock the aromatic hydrocarbon oil that weight is 4% of asphalt stock weight, be mixed into matrix pitch.
Then prepare polymer-modified, star-shaped sbs rubber mixed with the ratio of 1:1 with polyethylene, and at 150 ~ 180 DEG C, with the stirring velocity of 600r/min carry out being uniformly mixed be mixed with polymer-modified.
Prepare composite modified polymkeric substance again, polymer-modifiedly to stir above-mentioned with the stirring velocity of the ratio of 1:2 with 600r/min at 150 ~ 180 DEG C with diatomite, and be mixed into composite modified polymkeric substance.
While be incorporated as the above-mentioned composite modified polymkeric substance prepared of 10% of matrix pitch weight to matrix pitch, while shear it with 1000r/min with high-speed shearing machine, after composite modified polymkeric substance all joins matrix pitch, at 180 ~ 200 DEG C, continue to shear with 2000r/min again, continue to shear 1h.
After naturally cooling to 130 ~ 150 DEG C, the hexanolactam of 2% of matrix pitch weight is added to pitch, stir 30min, add again 3% of matrix pitch weight, fineness is 200 ~ 600 object sodium-based montmorillonites, under the rotating speed of 2000r/min after high-speed stirring 30min, reduce stirring velocity to 500r/min, keep temperature, continue to stir 1h.
And then it is heated to 220 DEG C gradually, in temperature-rise period, add to it trevira that weight is 5% of matrix pitch weight, stir 30min.
After having stirred, lower the temperature gradually from 220 DEG C, in temperature-fall period, add the lime borate of the mica powder of 5% of matrix pitch weight and 3% of matrix pitch weight to it.In time being cooled to 100 ~ 110 DEG C, add many bromines cyclodecane and the silicone resin of 3% of matrix pitch weight, and the hydrated aluminum oxide of 5% of matrix pitch weight, and shear with 3000r/min with high-speed shearing machine, shear history keeps pitch below 150 DEG C.
Preparation stable emulsifying mixture, adds hydrochloric acid additives in cationic emulsifier and ammonium chloride stablizer mixes, and blending ratio is 2:1:1.
Finally by the above-mentioned stable emulsifying mixture of 4% of matrix pitch weight, join in pitch, at 130 ~ 145 DEG C, stir 30min, after naturally cooling to 110 ~ 130 DEG C, namely obtain modifying asphalt.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not the restriction to the invention protection domain; although done to explain to the invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the invention or equivalent replacement, and not depart from essence and the scope of the invention technical scheme.
Claims (2)
1. a preparation method for modifying asphalt, is characterized in that comprising the following steps:
A. add to asphalt stock the aromatic hydrocarbon oil that weight is 4% of asphalt stock weight, be mixed into matrix pitch;
B. star-shaped sbs rubber to be mixed with the ratio of 1:1 with polyethylene, and at 150 ~ 180 DEG C, with the stirring velocity of 600r/min carry out being uniformly mixed be mixed with polymer-modified;
C. polymer-modifiedly to stir above-mentioned with the stirring velocity of the ratio of 1:2 with 600r/min at 150 ~ 180 DEG C with diatomite, and be mixed into composite modified polymkeric substance;
D. while be incorporated as the above-mentioned composite modified polymkeric substance of 10% of matrix pitch weight to matrix pitch, while shear it with 1000r/min with high-speed shearing machine, after composite modified polymkeric substance all joins matrix pitch, at 180 ~ 200 DEG C, continue to shear with 2000r/min again, after continuing to shear 1h, naturally cool to 130 ~ 150 DEG C;
E. pitch step D being cooled to 130 ~ 150 DEG C is heated to 220 DEG C gradually, in temperature-rise period, add the wood fibre or trevira that weight is 5% of matrix pitch weight to it, stirs 30min;
F. pitch is lowered the temperature gradually from 220 DEG C, in temperature-fall period, add the lime borate of the mica powder of 5% of matrix pitch weight and 3% of matrix pitch weight to it and stir, when being cooled to 100 ~ 110 DEG C, add the hydrated aluminum oxide of many bromines cyclodecane of 3% of matrix pitch weight, the silicone resin of 3% of matrix pitch weight and 5% of matrix pitch weight, and shear with 3000r/min with high-speed shearing machine, shear history pitch can heat up gradually, and intensification can not more than 150 DEG C;
G. in cationic emulsifier, hydrochloric acid additives is added and ammonium chloride stablizer mixes, blending ratio is 2:1:1, joins in pitch by the said mixture of 4% of matrix pitch weight, at 130 ~ 145 DEG C, stir 30min, after naturally cooling to 110 ~ 130 DEG C, namely obtain modifying asphalt.
2. the preparation method of a kind of modifying asphalt according to claim 1, it is characterized in that: Following step D, before step e, at 130 ~ 150 DEG C, the hexanolactam of 2% of matrix pitch weight is added to pitch, stir 30min, then add matrix pitch weight 3%, fineness is 200 ~ 600 object sodium-based montmorillonites, under the rotating speed of 2000r/min after high-speed stirring 30min, reduce stirring velocity to 500r/min, keep temperature, continue to stir 1h, then carry out step e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067095.3A CN104559267A (en) | 2015-02-09 | 2015-02-09 | Preparation method of modified asphalt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510067095.3A CN104559267A (en) | 2015-02-09 | 2015-02-09 | Preparation method of modified asphalt |
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| CN104559267A true CN104559267A (en) | 2015-04-29 |
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| CN201510067095.3A Withdrawn CN104559267A (en) | 2015-02-09 | 2015-02-09 | Preparation method of modified asphalt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189466A (en) * | 2017-07-19 | 2017-09-22 | 芜湖凯奥尔环保科技有限公司 | A kind of bombax cotton is modified the preparation method of rhamnolipid emulsified asphalt |
| CN107189456A (en) * | 2017-06-21 | 2017-09-22 | 长安大学 | A kind of ageing-resistant nano organic covers the preparation method of de- modified pitch |
| CN109385102A (en) * | 2017-08-02 | 2019-02-26 | 中国石油化工股份有限公司 | Adhesive waterproof coil cementitious matter, preparation method and waterproof roll prepared therefrom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569963A (en) * | 2003-07-25 | 2005-01-26 | 深圳市海川实业股份有限公司 | Fire-retardant and modified asphalt mixture |
| CN1935905A (en) * | 2006-09-30 | 2007-03-28 | 武汉理工大学 | Age-resistant modified asphalt and its preparing method |
| CN101445338A (en) * | 2008-11-27 | 2009-06-03 | 武汉理工大学 | Method for producing wet-mixing, skid-resistance and noise-reduction asphalt road surface material |
-
2015
- 2015-02-09 CN CN201510067095.3A patent/CN104559267A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569963A (en) * | 2003-07-25 | 2005-01-26 | 深圳市海川实业股份有限公司 | Fire-retardant and modified asphalt mixture |
| CN1935905A (en) * | 2006-09-30 | 2007-03-28 | 武汉理工大学 | Age-resistant modified asphalt and its preparing method |
| CN101445338A (en) * | 2008-11-27 | 2009-06-03 | 武汉理工大学 | Method for producing wet-mixing, skid-resistance and noise-reduction asphalt road surface material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189456A (en) * | 2017-06-21 | 2017-09-22 | 长安大学 | A kind of ageing-resistant nano organic covers the preparation method of de- modified pitch |
| CN107189466A (en) * | 2017-07-19 | 2017-09-22 | 芜湖凯奥尔环保科技有限公司 | A kind of bombax cotton is modified the preparation method of rhamnolipid emulsified asphalt |
| CN109385102A (en) * | 2017-08-02 | 2019-02-26 | 中国石油化工股份有限公司 | Adhesive waterproof coil cementitious matter, preparation method and waterproof roll prepared therefrom |
| CN109385102B (en) * | 2017-08-02 | 2021-06-08 | 中国石油化工股份有限公司 | Self-adhesive waterproof roll cementing material, preparation method thereof and waterproof roll prepared from self-adhesive waterproof roll cementing material |
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Application publication date: 20150429 |
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