CN101104741A - Polymer modified asphalt and producing method thereof - Google Patents
Polymer modified asphalt and producing method thereof Download PDFInfo
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- CN101104741A CN101104741A CNA2007101203234A CN200710120323A CN101104741A CN 101104741 A CN101104741 A CN 101104741A CN A2007101203234 A CNA2007101203234 A CN A2007101203234A CN 200710120323 A CN200710120323 A CN 200710120323A CN 101104741 A CN101104741 A CN 101104741A
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- modified asphalt
- asphalt
- polymer modified
- glycidyl methacrylate
- methacrylate graft
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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 methacrylic acid glycidyl ester grafted polyolefin, wherein, the amount of the methacrylic acid glycidyl ester grafted polyolefin is 1 to 6 percent of the weight of the basic asphalt. The methacrylic acid glycidyl ester is grafted on the chain of polyethylene, so that methacrylic acid glycidyl ester grafted modified polyethylene is formed. Because the methacrylic acid glycidyl ester grafted groups are easy to have reaction with the functional groups of the asphalt, the compatibility of the polymer with the asphalt is enhanced, various performances of the modified asphalt are increased. The modified asphalt prepared by the methacrylic acid glycidyl ester grafted polyolefin being modified has good high temperature and low temperature performances, is convenient to be used in construction. The road paved with the modified asphalt has the good road performances of no flowing in high temperature and no crack in low temperature.
Description
Technical field
The present invention relates to modifying asphalt, 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, the method for the good modifying asphalt of the new high low temperature of exploitation is very important.
Polyethylene modified asphalt has been applied for a lot of patents, but being directly used in the modifying asphalt that modifying asphalt obtains needs a lot of polymerized ethylene contents just can obtain the high modifying asphalt of softening temperature, but the significantly reduction that the raising of polymerized ethylene content has simultaneously brought the modifying asphalt low-temperature ductility has damaged the low-temperature performance of modifying asphalt.
Summary of the invention
The purpose of this invention is to provide a kind of polymer modified asphalt and production method thereof.
Polymer modified asphalt provided by the present invention comprises matrix pitch and glycidyl methacrylate graft polyethylene, and wherein, the poly consumption of glycidyl methacrylate graft is the 1-6% of matrix pitch weight.
The glycidyl methacrylate graft polyethylene is the glycidyl methacrylate graft new LDPE (film grade), and the percentage of grafting of glycidyl methacrylate 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 ℃, adding glycidyl methacrylate graft polyethylene stirs in advance then and makes glycidyl methacrylate graft polyethylene and the reaction of fusion matrix pitch by high-speed shearing equipment, obtains described polymer modified asphalt.
Wherein, common high-speed shearing equipment is screw extrusion press or colloidal mill etc.
With glycidyl methacrylate graft on Polyethylene Chain, form the glycidyl methacrylate graft modified poly ethylene, because the glycidyl methacrylate graft group is easy and the bituminous functional group reactions, increase polymkeric substance and bituminous consistency, improved every performance of modifying asphalt.The present invention adopts the PE modified modifying asphalt that obtains of glycidyl methacrylate graft, has good high temperature performance, is easy to construction, and the road surface of institute's making has high temperature does not trickle, the indehiscent good pavement performance of low temperature.
Embodiment
The present invention is used for the polymer-modified of modifying asphalt: glycidyl methacrylate graft polyolefine, the perhaps polyolefinic mixture of waste Crumb rubber and glycidyl methacrylate graft.
Wherein, the glycidyl methacrylate graft polyolefine comprises that (the glycidyl methacrylate graft percentage of grafting is 0.5-5% to the glycidyl methacrylate graft polyethylene, as commodity Lotader AX8840---glycidyl methacrylate graft new LDPE (film grade)), its consumption is the 1-6% weight of asphalt content.
Mixture comprises glycidyl methacrylate graft polyethylene (as commodity Lotader AX8840) and waste Crumb rubber, the poly consumption of glycidyl methacrylate graft is the 1-6% of pitch weight, the consumption of waste Crumb rubber is the 5%-40% of matrix pitch weight, and particle diameter is 80 orders-200 orders.
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 polymer modified asphalt.
Embodiment 1, glycidyl methacrylate graft modified low-density polyethylene modifying asphalt
The composition weight mark
No. 90 bitumen A 100.00
Lotader?AX8840 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 20 revolutions per seconds.
When heating 100.00 parts of No. 90 pitches to 120 ℃, add 4 parts of Lotader AX8840, stirred 5 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the GMA-g-LDPE modifying asphalt.
The softening temperature of gained modifying asphalt is 69.6 ℃; In the time of 25 ℃, penetration degree is 53dmm; (5 ℃, 5cm/min is 22.5 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, gained new LDPE (film grade) modifying asphalt softening temperature is 47.5 ℃, and (5 ℃, 5cm/min is 6 cm) to ductility, illustrate that new LDPE (film grade) modifying asphalt low-temperature performance descends, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature of present embodiment GMA-g-LDPE modifying asphalt (69.6 ℃) is higher 24.2 ℃ respectively than No. 90 matrix pitch A (45.4 ℃), new LDPE (film grade) modifying asphalt, 22.1 ℃, ductility (22.5,5 ℃, 5cm/min, cm) than No. 90 matrix pitch A (14), new LDPE (film grade) modifying asphalt difference high 8.5cm, 16.5cm, prove absolutely that modifying asphalt possesses good high temperature performance.
Embodiment 2, glycidyl methacrylate graft modified low-density polyethylene modifying asphalt
The composition weight mark
No. 90 bitumen A 100.00
Lotader?AX8840 6.00
Method for making:
Open the engagement type parallel dual-screw extruding machine, length-to-diameter ratio 36 is set in 160 ℃, 170 ℃, 180 ℃, 190 ℃ respectively with the temperature in one, two, three, four districts, and the adjustment rotating speed is 25 revolutions per seconds.
When heating 100.00 parts of No. 90 pitches to 120 ℃, add 6 parts of Lotader AX8840, stirred 5 minutes.Join engagement type parallel dual-screw extruding machine opening for feed, carry out extrusion reaction, obtain the GMA-g-LDPE modifying asphalt.
The softening temperature of gained modifying asphalt is 82.1 ℃; In the time of 25 ℃, penetration degree is 41dmm; (5 ℃, 5cm/min cm) is 24.6cm 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 6.00
As a result, gained new LDPE (film grade) modifying asphalt softening temperature is 51.2 ℃, and (5 ℃, 5cm/min is 4.5 cm) to ductility, illustrate that new LDPE (film grade) modifying asphalt low-temperature performance descends, and high-temperature behavior does not significantly improve.
By comparison, the softening temperature of present embodiment GMA-g-LDPE modifying asphalt (82.1 ℃) is higher 36.7 ℃ respectively than matrix pitch A, new LDPE (film grade) modifying asphalt, 30.9 ℃, ductility (24.6,5 ℃, 5cm/min, cm) than matrix pitch A, new LDPE (film grade) modifying asphalt difference high 10.6cm, 20.1cm, prove absolutely that modifying asphalt possesses good high temperature performance.
Embodiment 3, the compound waste Crumb rubber modified asphalt of glycidyl methacrylate graft new LDPE (film grade)
The composition weight mark
No. 70 pitch B 100.00
Lotader?AX8840 3.00
Shoddy (200 order) 10.00
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 15 revolutions per seconds.
When heating B to 120 ℃ of 100.00 parts of No. 70 pitch, add 3 parts of Lotader AX8840,10 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 GMA-g-LDPE.
The softening temperature of gained modifying asphalt is 65.8 ℃; In the time of 25 ℃, penetration degree is 40.2dmm; (5 ℃, 5cm/min is 18.6 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 (200 order) 10.00
As a result, the compound waste rubber powder modified asphalt softening temperature of gained new LDPE (film grade) is 53.2 ℃, and (5 ℃, 5cm/min is 4.2 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 of the compound waste rubber powder modified asphalt of present embodiment GMA-g-LDPE (65.8 ℃) is higher 15.6 ℃ respectively than the compound waste rubber powder modified asphalt of No. 70 matrix pitch B (50.2 ℃), new LDPE (film grade), 12.6 ℃, illustrate that the GMA-g-LDPE modifying asphalt possesses the good high-temperature performance; Ductility (18.6,5 ℃, 5cm/min, cm) than No. 70 matrix pitch B (15), the compound waste rubber powder modified asphalt difference of new LDPE (film grade) high 3.6cm, 14.4cm, low-temperature performance slightly improves.
Embodiment 4, the compound waste Crumb rubber modified asphalt of glycidyl methacrylate graft new LDPE (film grade)
The composition weight mark
No. 70 pitch B 100.00
Lotader?AX8840 5.00
Shoddy (100 order) 30.00
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 15 revolutions per seconds.
When heating B to 120 ℃ of 100.00 parts of No. 70 pitch, add 5 parts of Lotader AX8840,30 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 GMA-g-LDPE.
The softening temperature of gained modifying asphalt is 73.2 ℃; In the time of 25 ℃, penetration degree is 37dmm; (5 ℃, 5cm/min cm) is 11.5cm 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 5.00
Shoddy (100 order) 30.00
As a result, the compound waste rubber powder modified asphalt softening temperature of gained new LDPE (film grade) is 57.9 ℃, and (5 ℃, 5cm/min cm) is 2.3cm to ductility, illustrate that the compound waste rubber powder modified asphalt low-temperature performance of new LDPE (film grade) descends, and high-temperature behavior increases.
By comparison, the softening temperature of the compound waste rubber powder modified asphalt of present embodiment GMA-g-LDPE (73.2 ℃) is higher 23 ℃ respectively than the compound waste rubber powder modified asphalt of matrix pitch B, new LDPE (film grade), 15.3 ℃, illustrate that the GMA-g-LDPE modifying asphalt possesses the good high-temperature performance; Ductility (11.5,5 ℃, 5cm/min, cm) No. 70 matrix pitch B of ratio decrease but distinguish high 9.2cm than the compound waste rubber powder modified asphalt of new LDPE (film grade), so the low-temperature performance of the compound waste rubber powder modified asphalt of GMA-g-LDPE slightly improves.
Claims (7)
1. a polymer modified asphalt comprises matrix pitch and glycidyl methacrylate graft polyethylene, and wherein, the poly consumption of described glycidyl methacrylate graft is the 1-6% of matrix pitch weight.
2. polymer modified asphalt according to claim 1 is characterized in that: the glycidyl methacrylate graft polyethylene is the glycidyl methacrylate graft new LDPE (film grade), and the glycidyl methacrylate graft percentage of grafting is 0.5-5%.
3. polymer modified asphalt according to claim 1 and 2 is characterized in that: described polymer modified asphalt also contains waste Crumb rubber.
4. 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.
5. polymer modified asphalt according to claim 1 and 2 is characterized in that: the penetration degree of described matrix pitch is 10-200dmm, and softening temperature is 30-200 ℃.
6. the production method of the described polymer modified asphalt of claim 1, earlier matrix pitch is heated to 50 ℃-120 ℃, adding glycidyl methacrylate graft polyethylene stirs in advance then and makes glycidyl methacrylate graft polyolefine and the reaction of fusion matrix pitch by high-speed shearing equipment, obtains described polymer modified asphalt.
7. production method according to claim 6 is characterized in that: described high-speed shearing equipment is screw extrusion press or colloidal mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101203234A CN101104741A (en) | 2007-08-15 | 2007-08-15 | Polymer modified asphalt and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101203234A CN101104741A (en) | 2007-08-15 | 2007-08-15 | Polymer modified asphalt and producing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101104741A true CN101104741A (en) | 2008-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101203234A Pending CN101104741A (en) | 2007-08-15 | 2007-08-15 | Polymer modified asphalt and producing method thereof |
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| CN (1) | CN101104741A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617968A (en) * | 2012-03-23 | 2012-08-01 | 重庆鹏方路面工程技术研究院有限公司 | Cooling reclaiming agent for road and preparation method thereof |
| CN104087004A (en) * | 2014-07-31 | 2014-10-08 | 江苏省交通规划设计院股份有限公司 | Polyethylene graft butyl acrylate modified asphalt and preparation method thereof |
| CN104479372A (en) * | 2014-11-23 | 2015-04-01 | 黎裕发 | Preparation method of PE asphalt added with glycidyl methacrylate |
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN113088095A (en) * | 2021-03-10 | 2021-07-09 | 湖北工业大学 | Low-temperature forming polymer modified asphalt and preparation method thereof |
-
2007
- 2007-08-15 CN CNA2007101203234A patent/CN101104741A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617968A (en) * | 2012-03-23 | 2012-08-01 | 重庆鹏方路面工程技术研究院有限公司 | Cooling reclaiming agent for road and preparation method thereof |
| CN102617968B (en) * | 2012-03-23 | 2014-05-07 | 重庆鹏方路面工程技术研究院有限公司 | Cooling reclaiming agent for road and preparation method thereof |
| CN104087004A (en) * | 2014-07-31 | 2014-10-08 | 江苏省交通规划设计院股份有限公司 | Polyethylene graft butyl acrylate modified asphalt and preparation method thereof |
| CN104479372A (en) * | 2014-11-23 | 2015-04-01 | 黎裕发 | Preparation method of PE asphalt added with glycidyl methacrylate |
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN113088095A (en) * | 2021-03-10 | 2021-07-09 | 湖北工业大学 | Low-temperature forming polymer modified asphalt and preparation method thereof |
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Open date: 20080116 |