CN101104740A - Polymer modified asphalt and producing method thereof - Google Patents
Polymer modified asphalt and producing method thereof Download PDFInfo
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- CN101104740A CN101104740A CNA200710120322XA CN200710120322A CN101104740A CN 101104740 A CN101104740 A CN 101104740A CN A200710120322X A CNA200710120322X A CN A200710120322XA CN 200710120322 A CN200710120322 A CN 200710120322A CN 101104740 A CN101104740 A CN 101104740A
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Abstract
The invention discloses a polymer modified asphalt and a product method of the polymer modified asphalt. The polymer modified asphalt of the invention comprises the components of basic asphalt and maleic anhydride modified polyolefin, wherein, the amount of the maleic anhydride modified polyolefin is 1 to 6 percent of the weight of the basic asphalt. The maleic anhydride is grafted on the chain of polyethylene or polypropylene, so that maleic anhydride grafted modified polyethylene and polypropylene are formed. Because the groups of anhydride are easy to have reaction with the functional groups of the asphalt, the compatibility of the polyethylene and/or polypropylene with the asphalt is enhanced, various performances of the modified asphalt are increased. The modified asphalt prepared by the maleic anhydride modified polyolefin being modified has excellent high temperature performance, meanwhile does not decrease or decreases little low temperature performance. Moreover, no rut will be formed when the modified asphalt is used on the surface of the expressway.
Description
Technical field
The present invention relates to modifying asphalt and production method thereof, particularly relate to a kind of polymer modified asphalt and production method thereof.
Background technology
At present, the polymkeric substance of polymer modified asphalt is mainly SBS, LDPE, EVA, APAO, APP or IPP and their mixture.The employed polymkeric substance of the polymer modified asphalt of super expressway is mostly to be SBS, and the SBS modifying asphalt has high temperature performance preferably, is widely used in the middle surface layer and the upper layer of the surface layer of motorway.But its price height, consumption is 4-6%, has limited more massive application.Therefore it is very important developing new heat resist modification bituminous method.
Chinese patent CN20030910 has introduced the desulfurization glue powder-modified asphalt.Content is that desulfurization rubber powder, pitch and compatilizer stir by high speed shear under comparatively high temps or the grinding of colloidal mill makes, because properties-correcting agent is the desulfurization rubber powder, it has in pitch and dissolves swelling property preferably, simultaneously because desulfurization has produced more active group at vulcanized rubber powder, help rubber powder with the bituminous chemical bonding, and low price, but that its shortcoming is a resistance to elevated temperatures is relatively poor, with the shoddy amount many, be suitable for site operation making motorway.
Polyethylene and polypropylene modified asphalt have been applied for a lot of patents, but being directly used in the modifying asphalt that modifying asphalt obtains needs a lot of polyethylene and polypropylene content just can obtain the high modifying asphalt of softening temperature, but the significantly reduction that the raising of polyethylene and polypropylene content has simultaneously brought the modifying asphalt low-temperature ductility has damaged the low-temperature performance of modifying asphalt.
Summary of the invention
The objective of the invention is polymer modified asphalt and production method thereof.
Polymer modified asphalt provided by the present invention comprises matrix pitch and maleic anhydride modified polyolefine, and wherein, maleic anhydride modified polyolefinic consumption is the 1-6% of matrix pitch weight.
Wherein, maleic anhydride modified polyolefine is selected from maleic anhydride modified polyethylene and maleic anhydride modified polypropylene.In the maleic anhydride modified polyolefine, maleic anhydride grafting ratio is 0.5-5%.
Improve the low-temperature performance of modifying asphalt simultaneously in order to reduce cost, described polymer modified asphalt also contains waste Crumb rubber.The consumption of waste Crumb rubber is the 5%-40% of matrix pitch weight, and particle diameter is 80 orders-200 orders.
The penetration degree of the matrix pitch that the present invention is used is 10-200dmm, and softening temperature is 30-200 ℃.
The production method of polymer modified asphalt of the present invention, earlier matrix pitch is heated to 50 ℃-120 ℃, add maleic anhydride modified polyolefine and stir in advance, make maleic anhydride modified polyolefine and the reaction of fusion matrix pitch by high-speed shearing equipment then, obtain described polymer modified asphalt.
Wherein, common high-speed shearing equipment is screw extrusion press or colloidal mill.
With maleic anhydride graft on polyethylene or polypropylene chains, form modified by maleic acid anhydride graft polyethylene and polypropylene, because the maleic anhydride group is easy and the bituminous functional group reactions, can increase polyethylene and/or polypropylene and bituminous consistency, has improved every performance of modifying asphalt.The present invention adopts the maleic anhydride modified polyolefin modified modifying asphalt that obtains, and has excellent high-temperature behavior, and does not reduce or reduce the seldom low-temperature performance of modifying asphalt, and the surface layer that is used for motorway can not produce the rut phenomenon.
Embodiment
The present invention is used for the polymer-modified of modifying asphalt: maleic anhydride modified polyolefine, perhaps, the mixture of maleic anhydride modified polyolefine and waste Crumb rubber.
Wherein, maleic anhydride modified polyolefine comprises maleic anhydride modified polyethylene, maleic anhydride modified polypropylene etc., and maleic anhydride grafting ratio is 0.5-5%.These are polymer-modified can be single polymkeric substance, also can be the mixing of several polymkeric substance, and its consumption is the 1-6% of pitch weight.
Maleic anhydride modified polyethylene comprises maleic anhydride modified new LDPE (film grade), as commodity P﹠amp; A G-LDPE; Maleic anhydride modified high density polyethylene(HDPE) is as commodity P﹠amp; A G-HDPE.
Maleic anhydride modified polypropylene is maleic anhydride modified Atactic Polypropelene, as commodity P﹠amp; A G-PP.
The mixture of maleic anhydride modified polyolefine and waste Crumb rubber, maleic anhydride modified polyolefinic consumption are the 1-6% of pitch weight, and the consumption of waste Crumb rubber is the 5%-40% of matrix pitch weight, and particle diameter is 80 orders-200 orders.These maleic anhydride modified polyolefine can be single polymkeric substance, also can be the mixing of several polymkeric substance.
The matrix pitch that the present invention is used for this type of modifying asphalt is that penetration degree is 10-200dmm, and softening temperature is the pitch of 30-200.
It is as follows that the typical case of modifying asphalt of the present invention prepares production technique: use high-speed shearing equipment such as twin screw extruder with the matrix pitch of accurate measurement, polymer-modified Hybrid Heating, blending reaction obtains product---polymer modified asphalt.
Embodiment 1, maleic anhydride modified new LDPE (film grade) modifying asphalt
The composition weight mark
No. 90 bitumen A 100.00
P&A?G-LDPE 4.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 150 ℃, 170 ℃, 170 ℃, 190 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 20Hz.
When heating 100.00 parts of No. 90 pitches to 120 ℃, add 4 parts of P﹠amp; A G-LDPE stirred 5 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the MAH-g-LDPE modifying asphalt.
Gained modifying asphalt softening temperature is 71 ℃; In the time of 25 ℃, penetration degree is 26dmm; (5 ℃, 5cm/min is 34 cm) to ductility.
As a comparison, (LDPE 18D) comes modified substrate pitch with new LDPE (film grade), and preparation process is the same, and component is as follows:
The composition weight mark
No. 90 bitumen A 100.00
LDPE?18D 4.00
As a result, the softening temperature of gained modifying asphalt is 47.5 ℃, and ductility (5 ℃, 5cm/min is 6 cm), shows, new LDPE (film grade) modifying asphalt low-temperature performance descends, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature of the maleic anhydride modified new LDPE (film grade) modifying asphalt of present embodiment (71 ℃) is higher 25.6 ℃ respectively than No. 90 matrix pitch A (45.4 ℃), LDPE 18D modifying asphalt (47.5 ℃), 23.5 ℃, ductility (34,5 ℃, 5cm/min, cm) than No. 90 matrix pitch A (14), LDPE 18D modifying asphalt (6) difference high 20cm, 28cm, prove absolutely that the MAH-g-LDPE modifying asphalt possesses good high temperature performance.
Embodiment 2, maleic anhydride modified high-density polyethylene modified pitch
The composition weight mark
No. 90 bitumen A 100.00
HAD-14 6.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 150 ℃, 170 ℃, 170 ℃, 190 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 20Hz.
When heating 100.00 parts of No. 90 pitches to 140 ℃, add 6 parts of HAD-14, stirred 5 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the MAH-g-HDPE modifying asphalt.
Gained modifying asphalt softening temperature is 95 ℃; In the time of 25 ℃, penetration degree is 15dmm; (5 ℃, 5cm/min is 7 cm) to ductility.
As a comparison, come modified substrate pitch with high density polyethylene(HDPE) (HDPE 6200), preparation process is the same, and component is as follows:
The composition weight mark
No. 90 bitumen A 100.00
HDPE?6200 6.00
As a result, gained modifying asphalt softening temperature is 52.3 ℃, and (5 ℃, 5cm/min is 0 cm) to ductility, illustrate that high-density polyethylene modified pitch low-temperature performance descends, and high-temperature behavior improves.
By comparison, the softening temperature of present embodiment MAH-g-HDPE modifying asphalt (95 ℃) is higher 49.6 ℃ respectively than No. 90 matrix pitch A, HDPE 6200 modifying asphalts, 42.7 ℃, illustrates that MAH-g-HDPE modifying asphalt high-temperature behavior is good; Ductility (7,5 ℃, 5cm/min, cm) low than No. 90 matrix pitch A (14), but, illustrate that the low-temperature performance of MAH-g-HDPE modifying asphalt slightly descends than HDPE 6200 modifying asphalts (0) height.
Embodiment 3, maleic anhydride modified Atactic Polypropelene modifying asphalt
The composition weight mark
No. 90 bitumen A 100.00
P&A?G-PP 3.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 120 ℃, 150 ℃, 150 ℃, 190 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 25Hz.
When heating 100 parts of No. 90 pitches to 120 ℃, add 3 parts of P﹠amp; A G-PP stirred 5 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain P﹠amp; A G-PP modifying asphalt.
Gained modifying asphalt softening temperature is 68 ℃; In the time of 25 ℃, penetration degree is 28dmm; (5 ℃, 5cm/min cm) is 42cm to ductility.
As a comparison, (APP-A) comes modified substrate pitch with Atactic Polypropelene, and preparation process is the same, and component is as follows:
The composition weight mark
No. 90 bitumen A 100.00
APP-A 3.00
As a result, gained modifying asphalt softening temperature is 50.4 ℃, and (5 ℃, 5cm/min is 11 cm) to ductility, illustrate that Atactic Polypropelene modifying asphalt low-temperature performance slightly descends, and high-temperature behavior increases.
By comparison, the softening temperature of the maleic anhydride modified Atactic Polypropelene modifying asphalt of present embodiment (68 ℃) is higher 22.6 ℃ respectively than bitumen A, APP-A modifying asphalt, 17.6 ℃, ductility (42,5 ℃, 5cm/min, cm) than bitumen A, APP-A modifying asphalt (11) difference high 28cm, 31cm, P﹠amp is described; A G-PP modifying asphalt possesses good high temperature performance.
Embodiment 4, the compound waste Crumb rubber modified asphalt of maleic anhydride modified new LDPE (film grade)
The composition weight mark
No. 70 pitch B 100.00
P&A?G-LDPE 3.00
Shoddy (100 order) 10
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 120 ℃, 170 ℃, 170 ℃, 210 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 15Hz.
When heating B to 120 ℃ of 100.00 parts of No. 70 pitch, add 3 parts of P﹠amp; A G-LDPE, 10 parts of shoddies join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the compound waste rubber powder modified asphalt of MAH-g-LDPE.
The softening temperature of gained modifying asphalt is 67.7 ℃; In the time of 25 ℃, penetration degree is 35.1dmm; (5 ℃, 5cm/min is 6.8 cm) to ductility.
As a comparison, come modified substrate pitch with the compound waste Crumb rubber of new LDPE (film grade) (LDPE 18D), preparation process is the same, and component is as follows:
The composition weight mark
No. 70 pitch B 100.00
LDPE?18D 3.00
Shoddy (100 order) 10.00
As a result, the softening temperature of gained modifying asphalt is 54.8 ℃, and (5 ℃, 5cm/min is 3.6 cm) to ductility, illustrate that the compound waste rubber powder modified asphalt low-temperature performance of new LDPE (film grade) descends, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature (67.7 ℃) of the compound waste rubber powder modified asphalt of the maleic anhydride modified new LDPE (film grade) of present embodiment is than No. 70 matrix pitch B (50.2 ℃), the compound waste rubber powder modified asphalt of new LDPE (film grade) 18D (54.8 ℃) is high 17.5 ℃ respectively, 12.9 ℃, (5 ℃ of ductilities, 5cm/min, cm) for 6.8cm than the low 8.6cm of No. 70 matrix pitch B (15cm), but than the high 3.2cm of the compound waste rubber powder modified asphalt of new LDPE (film grade) 18D (3.6cm), prove absolutely that the compound waste rubber powder modified asphalt of maleic anhydride modified new LDPE (film grade) possesses the good high-temperature performance, but low-temperature performance reduces slightly.
Embodiment 5, the compound waste Crumb rubber modified asphalt of maleic anhydride modified high density polyethylene(HDPE)
The composition weight mark
No. 70 pitch B 100.00
P&A?G-HDPE 5.00
Shoddy (200 order) 30
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 140 ℃, 170 ℃, 170 ℃, 210 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 15Hz.
When heating B to 120 ℃ of 100.00 parts of No. 70 pitch, add 5 parts of P﹠amp; A G-HDPE, 30 parts of shoddies join engagement type parallel dual-screw extruding machine opening for feed after stirring, carry out extrusion reaction, obtain P﹠amp; The compound waste rubber powder modified asphalt of A G-HDPE.
The softening temperature of gained modifying asphalt is 76.2 ℃; In the time of 25 ℃, penetration degree is 27.3dmm; (5 ℃, 5cm/min is 4.1 cm) to ductility.
As a comparison, come modified substrate pitch with the compound waste Crumb rubber of high density polyethylene(HDPE) (HDPE 6400), preparation process is the same, and component is as follows:
The composition weight mark
No. 70 pitch B 100.00
HDPE?6400 5.00
Shoddy (200 order) 30
As a result, gained modifying asphalt softening temperature is 63.2 ℃, and (5 ℃, 5cm/min is 0 cm) to ductility, illustrate that the compound waste rubber powder modified asphalt low-temperature performance of high density polyethylene(HDPE) descends, and high-temperature behavior increases.
By comparison, present embodiment P﹠amp; The compound waste rubber powder modified asphalt softening temperature of A G-HDPE is higher 26.4 ℃ respectively than No. 70 matrix pitch B, HDPE 6400 compound waste rubber powder modified asphalts, 13 ℃, (5 ℃ of ductilities, 5cm/min, cm) lower for 4.1cm than No. 70 matrix pitch B, but, P﹠amp is described than the compound waste rubber powder modified asphalt height of high density polyethylene(HDPE); The compound waste rubber powder modified asphalt of AG-HDPE possesses the good high-temperature performance, but low-temperature performance slightly reduces.
Embodiment 6, maleic anhydride modified polypropylene and waste Crumb rubber modified asphalt
The composition weight mark
No. 70 pitch B 100.00
P&A?G-PP 3.00
Shoddy (100 order) 20
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 120 ℃, 170 ℃, 170 ℃, 210 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 15Hz.
When heating B to 120 ℃ of 100.00 parts of No. 70 pitch, add 3 parts of P﹠amp; A G-PP, 20 parts of shoddies join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the compound waste rubber powder modified asphalt of MAH-g-PP.
The softening temperature of gained modifying asphalt is 67.7 ℃; In the time of 25 ℃, penetration degree is 35.1dmm; (5 ℃, 5cm/min is 6.8 cm) to ductility.
As a comparison, come modified substrate pitch with the compound waste Crumb rubber of Atactic Polypropelene (APP-A), preparation process is the same, and component is as follows:
The composition weight mark
No. 70 pitch B 100.00
APP-A 3.00
Shoddy (100 order) 20
As a result, gained modifying asphalt softening temperature is 54.8 ℃, and (5 ℃, 5cm/min is 3.6 cm) to ductility, illustrate that the polypropylene modified asphalt low-temperature performance descends, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature (67.7 ℃) of the compound waste rubber powder modified asphalt of the maleic anhydride modified polypropylene of present embodiment is higher 17.5 ℃ respectively than No. 70 matrix pitch B (50.2 ℃), the compound waste rubber powder modified asphalt of APP-A (54.8 ℃), 12.9 ℃, (5 ℃ of ductilities, 5cm/min, cm) for 6.8cm than the low 8.6cm of No. 70 matrix pitch B (15cm), but than the high 3.2cm of the compound waste rubber powder modified asphalt of APP-A (3.6cm), illustrate that the compound waste rubber powder modified asphalt of maleic anhydride modified polypropylene possesses the good high-temperature performance, but low-temperature performance reduces slightly.
Embodiment 7, maleic anhydride modified new LDPE (film grade) and maleic anhydride modified polypropylene composite modified asphalt
The composition weight mark
No. 90 pitch C 100.00
P&A?G-LDPE 2.00
P&A?G-PP 2.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 100 ℃, 140 ℃, 160 ℃, 180 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 15Hz.
When heating C to 120 ℃ of 100.00 parts of No. 90 pitch, add 2 parts of P﹠amp; A G-LDPE, 2 parts of P﹠amp; A G-PP stirred 12 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain MAH-g-LDPE and MAH-g-PP composite modified asphalt.
The softening temperature of gained modifying asphalt is 82 ℃; In the time of 25 ℃, penetration degree is 20dmm; (5 ℃, 5cm/min is 16 cm) to ductility.
As a comparison, come compound modified substrate pitch with new LDPE (film grade) (LDPE) and polypropylene (PP), preparation process is the same, and component is as follows:
The composition weight mark
No. 90 pitch C 100.00
LDPE 2.00
PP 2.00
As a result, gained modifying asphalt softening temperature is 56.7 ℃, and (5 ℃, 5cm/min cm) is 7.2cm to ductility, illustrate that new LDPE (film grade) and polypropylene composite modified asphalt low-temperature performance descend, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature of present embodiment MAH-g-LDPE and MAH-g-PP composite modified asphalt is higher 31.8 ℃ respectively than No. 90 matrix pitch C (49.8 ℃), LDPE and PP composite modified asphalt, 25.3 ℃, illustrate that MAH-g-LDPE and MAH-g-PP composite modified asphalt possess the good high-temperature performance.(5 ℃ of ductilities, 5cm/min, cm) be that 16cm distinguishes high 3cm, 8.8cm than matrix pitch C ductility (13cm), new LDPE (film grade) and polypropylene composite modified asphalt ductility (7.2cm), illustrate that MAH-g-LDPE and MAH-g-PP composite modified asphalt have improved the bituminous low-temperature performance simultaneously.
Embodiment 8, maleic anhydride modified high density polyethylene(HDPE) and maleic anhydride modified polypropylene modified asphalt
The composition weight mark
No. 90 pitch C 100.00
P&A?G-HDPE 3.00
P&A?G-PP 3.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 140 ℃, 140 ℃, 170 ℃, 190 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 30Hz.
When heating C to 120 ℃ of 100.00 parts of No. 90 pitch, add 3 parts of P﹠amp; A G-HDPE, 3 parts of P﹠amp; A G-PP stirred 15 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain MAH-g-HDPE and MAH-g-PP composite modified asphalt.
The softening temperature of gained modifying asphalt is 97.6 ℃; In the time of 25 ℃, penetration degree is 16.5dmm; (5 ℃, 5cm/min is 4 cm) to ductility.
As a comparison, come compound modified substrate pitch with high density polyethylene(HDPE) (HDPE) and polypropylene (APP-A), preparation process is the same, and component is as follows:
The composition weight mark
No. 90 pitch C 100.00
HDPE?6400 3.00
APP-A 3.00
As a result, gained modifying asphalt softening temperature is 58.2 ℃, and (5 ℃, 5cm/min cm) is 1.2cm to ductility, illustrate that high density polyethylene(HDPE) and polypropylene composite modified asphalt low-temperature performance descend, and high-temperature behavior increases.
By comparison, the softening temperature of present embodiment MAH-g-HDPE and MAH-g-PP composite modified asphalt is higher 47.8 ℃ respectively than matrix pitch C, HDPE and PP composite modified asphalt, 39.4 ℃, illustrate that MAH-g-HDPE and MAH-g-PP composite modified asphalt possess the good high-temperature performance.Ductility (5 ℃, 5cm/min, cm) to be 4cm reduce than matrix pitch C ductility but than high density polyethylene(HDPE) and polypropylene composite modified asphalt ductility height, illustrate that the low-temperature performance of MAH-g-HDPE and MAH-g-PP composite modified asphalt decreases.
Claims (8)
1. a polymer modified asphalt comprises matrix pitch and maleic anhydride modified polyolefine, and wherein, maleic anhydride modified polyolefinic consumption is the 1-6% of matrix pitch weight.
2. polymer modified asphalt according to claim 1 is characterized in that: described maleic anhydride modified polyolefine is selected from maleic anhydride modified polyethylene and maleic anhydride modified polypropylene.
3. polymer modified asphalt according to claim 1 is characterized in that: in the described maleic anhydride modified polyolefine, maleic anhydride grafting ratio is 0.5-5%.
4. according to claim 1 or 2 or 3 described polymer modified asphalts, it is characterized in that: described polymer modified asphalt also contains waste Crumb rubber.
5. polymer modified asphalt according to claim 4 is characterized in that: the consumption of described waste Crumb rubber is the 5%-40% of matrix pitch weight, and particle diameter is 80 orders-200 orders.
6. according to claim 1 or 2 or 3 described polymer modified asphalts, it is characterized in that: the penetration degree of described matrix pitch is 10-200dmm, and softening temperature is 30-200 ℃.
7. the production method of the described polymer modified asphalt of claim 1, earlier matrix pitch is heated to 50 ℃-120 ℃, adding maleic anhydride modified polyolefine stirs in advance, make maleic anhydride modified polyolefine and the reaction of fusion matrix pitch by high-speed shearing equipment then, obtain described polymer modified asphalt.
8. production method according to claim 7 is characterized in that: described high-speed shearing equipment is screw extrusion press or colloidal mill.
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- 2007-08-15 CN CNA200710120322XA patent/CN101104740A/en active Pending
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| CN101549975B (en) * | 2008-07-24 | 2011-08-31 | 江苏宝利沥青股份有限公司 | Asphalt mixing material additive and preparation method thereof |
| WO2011057455A1 (en) * | 2009-11-16 | 2011-05-19 | 江苏宝利沥青股份有限公司 | High-strength structural asphalt material |
| CN101955335A (en) * | 2010-09-26 | 2011-01-26 | 华中科技大学 | Road asphalt concrete anti-rut agent and preparation method thereof |
| CN101955335B (en) * | 2010-09-26 | 2013-01-23 | 华中科技大学 | Road asphalt concrete anti-rut agent and preparation method thereof |
| CN102051059A (en) * | 2010-11-11 | 2011-05-11 | 华南理工大学 | Method for preparing polyethylene modified asphalt with heat-storage stability |
| CN102051059B (en) * | 2010-11-11 | 2012-12-26 | 华南理工大学 | Method for preparing polyethylene modified asphalt with heat-storage stability |
| CN102585523A (en) * | 2010-12-27 | 2012-07-18 | Sk新技术株式会社 | Composition for warm-mix asphalt pavements |
| CN102585523B (en) * | 2010-12-27 | 2016-03-02 | Sk新技术株式会社 | Composition for warm-mix asphalt pavements |
| CN102408731B (en) * | 2011-09-01 | 2013-06-19 | 中胶橡胶资源再生（青岛）有限公司 | Preparation method of modified rubber powder, rubber powder modified asphalt and mixture and preparation method thereof |
| CN102408731A (en) * | 2011-09-01 | 2012-04-11 | 中胶橡胶资源再生有限公司 | Preparation method of modified rubber powder, rubber powder modified asphalt and mixture and preparation method thereof |
| CN102604397A (en) * | 2012-02-15 | 2012-07-25 | 上海交通大学 | Polyolefin hybrid asphalt with stable thermal storage and preparation method thereof |
| CN102964525A (en) * | 2012-03-08 | 2013-03-13 | 湖北国创高新材料股份有限公司 | Road asphalt mixture rut resisting additive and preparation method thereof |
| CN103073903A (en) * | 2013-02-05 | 2013-05-01 | 西安公路研究院 | Rubber powder-modified asphalt and preparation method thereof |
| CN103073903B (en) * | 2013-02-05 | 2016-02-03 | 西安公路研究院 | A kind of rubber powder modified asphalt and preparation method thereof |
| CN104650601A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Production formula for raising low temperature performance of crumb rubber asphalt |
| CN104650601B (en) * | 2013-11-21 | 2017-02-08 | 交通运输部科学研究院 | Production formula for raising low temperature performance of crumb rubber asphalt |
| CN103788668A (en) * | 2013-12-30 | 2014-05-14 | 长沙理工大学 | Composite modified asphalt and preparation method thereof |
| CN103788668B (en) * | 2013-12-30 | 2016-01-06 | 长沙理工大学 | A kind of composite modified asphalt and preparation method thereof |
| CN104877409A (en) * | 2015-05-09 | 2015-09-02 | 安徽快来防水防腐有限公司 | Heat-resistant anticorrosive maleic anhydride grafted SBS (styrene-butadiene-styrene) modified asphalt waterproof coiled material and preparation method thereof |
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| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN108264721A (en) * | 2016-12-30 | 2018-07-10 | 江苏苏博特新材料股份有限公司 | The preparation method of high-viscosity bitumen modifier and modified pitch and asphalt containing the modifying agent |
| CN107815132A (en) * | 2017-11-17 | 2018-03-20 | 苏州三创路面工程有限公司 | A kind of modified pitch and its production technology and application |
| CN114686104A (en) * | 2020-12-28 | 2022-07-01 | 广东三和化工科技有限公司 | Water-emulsion type waterproof coating aerosol paint and preparation method thereof |
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