CN106751968A - A kind of high performance modified bitumen and preparation method thereof - Google Patents
A kind of high performance modified bitumen and preparation method thereof Download PDFInfo
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- CN106751968A CN106751968A CN201611168408.5A CN201611168408A CN106751968A CN 106751968 A CN106751968 A CN 106751968A CN 201611168408 A CN201611168408 A CN 201611168408A CN 106751968 A CN106751968 A CN 106751968A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides a kind of high performance modified bitumen, it is made up of the raw material of following weight parts：70 100 parts of pitch, styrene butadiene styrene（SBS）37 parts, vinyl bis-stearamides（EBS）0.01 2 parts, 0.1 1 parts of vulcanizing agent, 0.1 1.5 parts of antioxidant, 24 parts of methyl ethyl ketone, 23 parts of age resistor, 1 2.5 parts of methyl phenolic phenolic resin, 0.5 1 parts of epoxidized vegetable oil, 24 parts of the third acetic acid, 13 parts of acetopyruvic acid nickel, 13 parts of dibutyl ester；13 parts of pentaerythritol stearate；The present invention has excellent high temperature stability, salt fog resistance, resistance to ag(e)ing, and can reduce modified pitch high temperature viscosity, meets high adhered modification index request and can be used for the special occasions such as OGFC porous asphalt pavements and Heavy Traffic asphalt road surface.
Description
Technical field
The present invention relates to chemical field, more particularly to a kind of high performance modified bitumen.
Background technology
It is known that high temperature rut, fatigue and cold cracking defect phenomenon easily occurs in bituminous paving occur, at present generally
The high/low temperature and ageing resistace of asphaltic products are improved using the high molecular polymers such as SBS are added in plain asphalt.But
As global warming especially increases in southern area hot weather, many engineering projects use low grade pitch requirement matrix
Asphalt Penetration is not more than 70（0.1mm）, the modified needle penetration control 55 more than 5% by SBS consumptions regulation（0.1mm）Below.
So that SBS modified pitch viscosity increases 135 DEG C of viscosity and is not more than 3.0Pa.s, a large amount of SBS polymers often beyond or close to specification
Addition cause that dispersion and the compatibility poor of pitch are easily layered.Constantly carried to meet construction conformance viscosity requirement needs
Associated construction mix high, compacting temperature, the raising of temperature to workman's operating environment safety, asphalt material it is aging have a strong impact on after
Phase bituminous paving service life.In addition, highroad is in high-temperature stability, low-temperature cracking-resistance, ageing resistance and life requirement
More and more higher.Traditional modified pitch effect performance is difficult to meet the market demand of current development.
The content of the invention
In order to overcome above mentioned problem, there is excellent high temperature stability, salt fog resistance, ageing-resistant the invention provides one kind
Property, modified pitch of modified pitch high temperature viscosity and preparation method thereof can be reduced.
To achieve the above object, the technical scheme of present invention offer is：
A kind of high performance modified bitumen, it is made up of the raw material of following weight parts：82 parts of pitch, s-B-S
Copolymer（SBS）3.5 parts, vinyl bis-stearamides（EBS）1.8 parts, 0.6 part of vulcanizing agent, 1.2 parts of antioxidant, Methylethyl
3 parts of ketone, 2.4 parts of age resistor, 1.7 parts of methyl phenolic phenolic resin, 0.7 part of epoxidized vegetable oil, 2.8 parts of the third acetic acid, acetylacetone,2,4-pentanedione
1.5 parts of sour nickel, 1.2 parts of dibutyl ester；2.7 parts of pentaerythritol stearate.
A kind of preparation method of high performance modified bitumen, it is comprised the following steps：
（1）The weight portion as shared by each raw material is：Pitch 70-100 parts, styrene-butadiene-styrene（SBS）3-7
Part, vinyl bis-stearamides（EBS）0.01-2 parts, vulcanizing agent 0.1-1 parts, antioxidant 0.1-1.5 parts, methyl ethyl ketone 2-4
Part, age resistor 2-3 parts, 1-2.5 parts of methyl phenolic phenolic resin, epoxidized vegetable oil 0.5-1 parts, the third acetic acid 2-4 parts, levulinic
1-3 parts, dibutyl ester 1-3 parts of ketone acid nickel；It is pentaerythritol stearate 1-3 parts, standby；
（2）Matrix pitch is fitted into 165 DEG C~180 DEG C are heated in the asphalt tank with agitating device, open agitating device simultaneously
Add 0.01-2 parts of EBS；
（3）By SBS, pentaerythritol stearate 1-3 parts, add heating after matrix pitch in, open high-speed shearing machine rotating speed
4800-5200r/min shears 1-2h, is made SBS modified pitch；
（4）Temperature is maintained into 175 °C, 0.1-1 parts of vulcanizing agent of addition, antioxidant 0.1-1.5 parts, age resistor 2-3 parts, the third acetic acid
2-4 parts, 1 hour is stirred under the rotating speed of 2800-3500r/min；
（5）Temperature is risen to 180 °C, add 2-4 part of methyl ethyl ketone, 1-3 parts of acetopyruvic acid nickel, dibutyl ester 1-3 parts, turn
1.5-2 hour is stirred under the rotating speed of fast 2200-2500 r/min；
（6）1-2.5 parts, epoxidized vegetable oil 0.5-1 parts of methyl phenolic phenolic resin is added under identical rotating speed, and in rotating speed
Stirred 30 minutes under the rotating speed of 1500-1800 r/min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
Above-mentioned technical proposal is beneficial in that：
1st, beneficial effect is technical scheme compared with prior art：SBS modifier disperse in pitch it is more uniform,
Stability more preferably, 90 DEG C is more than in hot mastication, and 60 DEG C of dynamic viscosities are up to 79000Pa.s, and the methyl phenolic phenolic aldehyde for adding
Resin and epoxidized vegetable oil have salt fog resistance so that the big needle penetration of normal temperature denseness is 55（0.1mm）Hereinafter there is salt fog resistance,
There is good synergistic function, it will be apparent that improve the performance of viscosity, reduce between third acetic acid and acetopyruvic acid nickel
135 DEG C of high temperature viscosities of modified pitch, low temperature increased the intermolecular mutual dislocation of SBS modified pitch, slip ability so that low temperature prolongs
Malleability can be unaffected.
2nd, high-performance pitch of the present invention is applied to the regional Heavy Traffic pavement of road of southern high-temperature, coastal cities and oozes draining and change
Property bituminous paving, can effectively extend Modified Bitumen Pavement service life, it can also be used to deck paving.
Specific embodiment
With reference to embodiment, the invention will be further described, but embodiments of the present invention not limited to this.
Embodiment 1
A kind of high performance modified bitumen its component proportioning is：It is made up of the raw material of following weight parts：82 parts of pitch, styrene-
BS（SBS）3.5 parts, vinyl bis-stearamides（EBS）1.8 parts, 0.6 part of vulcanizing agent, antioxidant
1.2 parts, 3 parts of methyl ethyl ketone, 2.4 parts of age resistor, 1.7 parts of methyl phenolic phenolic resin, 0.7 part of epoxidized vegetable oil, the third acetic acid
2.8 parts, 1.5 parts of acetopyruvic acid nickel, 1.2 parts of dibutyl ester；2.7 parts of pentaerythritol stearate.
A kind of preparation method of high performance modified bitumen, it is comprised the following steps：
（1）It is standby from above-mentioned each raw material and its weight portion；
（2）Matrix pitch is fitted into 175 DEG C are heated in the asphalt tank with agitating device, open agitating device and addition 1.8
Part EBS；
（3）2.7 parts of SBS, pentaerythritol stearate are added in the matrix pitch after heating, open high-speed shearing machine rotating speed
4900r/min shears 1.4h, is made SBS modified pitch；
（4）Temperature is maintained into 175 °C, 0.6 part of vulcanizing agent of addition, 1.2 parts of antioxidant, 2.4 parts of age resistor, the third acetic acid 2.8
Part, 1 hour is stirred under the rotating speed of 3200r/min；
（5）Temperature is risen to 180 °C, 3 parts of methyl ethyl ketone, 1.5 parts of acetopyruvic acid nickel, 1.2 parts of dibutyl ester is added, in rotating speed
1.7 hours are stirred under the rotating speed of 2400 r/min；
（6）1.7 parts of methyl phenolic phenolic resin, 0.7 part of epoxidized vegetable oil are added under identical rotating speed, and in rotating speed 1750
Stirred 30 minutes under the rotating speed of r/min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
Embodiment 2
A kind of high performance modified bitumen its component proportioning is：It is made up of the raw material of following weight parts：70 parts of pitch, styrene-
BS（SBS）3 parts, vinyl bis-stearamides（EBS）0.01 part, 0.2 part of vulcanizing agent, antioxidant 0.1
Part, 2 parts of methyl ethyl ketone, 2 parts of age resistor, 1.2 parts of methyl phenolic phenolic resin, 0.5 part of epoxidized vegetable oil, 3.2 parts of the third acetic acid,
1 part of acetopyruvic acid nickel, 1 part of dibutyl ester；1.5 parts of pentaerythritol stearate.
A kind of preparation method of high performance modified bitumen, it is comprised the following steps：
（1）It is standby from above-mentioned each raw material and its weight portion；
（2）Matrix pitch is fitted into 165 DEG C are heated in the asphalt tank with agitating device, open agitating device and addition 0.01
Part EBS；
（3）1.5 parts of SBS, pentaerythritol stearate are added in the matrix pitch after heating, open high-speed shearing machine rotating speed
4800r/min shears 1h, is made SBS modified pitch；
（4）Temperature is maintained 175 °C, 0.2 part of vulcanizing agent, 0.1 part of antioxidant, 2 parts of age resistor, 3.2 parts of the third acetic acid is added,
1 hour is stirred under the rotating speed of 2800r/min；
（5）Temperature is risen to 180 °C, 1.2 parts of methyl ethyl ketone, 1 part of acetopyruvic acid nickel, 1 part of dibutyl ester is added, in rotating speed
1.5 hours are stirred under the rotating speed of 2200 r/min；
（6）1.2 parts of methyl phenolic phenolic resin, 0.5 part of epoxidized vegetable oil are added under identical rotating speed, and in rotating speed 1500
Stirred 30 minutes under the rotating speed of r/min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
Embodiment 3
A kind of high performance modified bitumen its component proportioning is：It is made up of the raw material of following weight parts：100 parts of pitch, styrene-
BS（SBS）7 parts, vinyl bis-stearamides（EBS）2 parts, 1 part of vulcanizing agent, 1.5 parts of antioxidant, first
4 parts of base ethyl ketone, 3 parts of age resistor, 2.5 parts of methyl phenolic phenolic resin, 1 part of epoxidized vegetable oil, 4 parts of the third acetic acid, acetylacetone,2,4-pentanedione
3 parts of sour nickel, 3 parts of dibutyl ester；3 parts of pentaerythritol stearate.
A kind of preparation method of high performance modified bitumen, it is comprised the following steps：
（1）It is standby from above-mentioned each raw material and its weight portion；
（2）Matrix pitch is fitted into 180 DEG C are heated in the asphalt tank with agitating device, open 2 parts of agitating device and addition
EBS；
（3）3 parts of SBS, pentaerythritol stearate are added in the matrix pitch after heating, open high-speed shearing machine rotating speed
5200r/min shears 2h, is made SBS modified pitch；
（4）Temperature is maintained 175 °C, 1 part of vulcanizing agent, 1.5 parts of antioxidant, 3 parts of age resistor, 4 parts of the third acetic acid is added,
1 hour is stirred under the rotating speed of 3500r/min；
（5）Temperature is risen to 180 °C, 4 parts of methyl ethyl ketone, 3 parts of acetopyruvic acid nickel, 3 parts of dibutyl ester is added, in rotating speed 2500
2 hours are stirred under the rotating speed of r/min；
（6）2.5 parts of methyl phenolic phenolic resin, 1 part of epoxidized vegetable oil are added under identical rotating speed, and in the r/ of rotating speed 1800
Stirred 30 minutes under the rotating speed of min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
Embodiment 4
A kind of high performance modified bitumen its component proportioning is：It is made up of the raw material of following weight parts：89 parts of pitch, styrene-
BS（SBS）5 parts, vinyl bis-stearamides（EBS）1.4 parts, 0.5 part of vulcanizing agent, antioxidant 0.7
Part, 3.1 parts of methyl ethyl ketone, 2.4 parts of age resistor, 1.8 parts of methyl phenolic phenolic resin, 0.4 part of epoxidized vegetable oil, the third acetic acid
1.9 parts, 2.2 parts of acetopyruvic acid nickel, 1.7 parts of dibutyl ester；2.7 parts of pentaerythritol stearate.
A kind of preparation method of high performance modified bitumen, it is comprised the following steps：
（1）It is standby from above-mentioned each raw material and its weight portion；
（2）Matrix pitch is fitted into 167 DEG C are heated in the asphalt tank with agitating device, open agitating device and addition 1.4
Part EBS；
（3）2.7 parts of SBS, pentaerythritol stearate are added in the matrix pitch after heating, open high-speed shearing machine rotating speed
4900r/min shears 2h, is made SBS modified pitch；
（4）Temperature is maintained into 175 °C, 0.5 part of vulcanizing agent of addition, 0.7 part of antioxidant, 2.4 parts of age resistor, the third acetic acid 1.9
Part, 1 hour is stirred under the rotating speed of 2900r/min；
（5）Temperature is risen to 180 °C, 1.8 parts of methyl ethyl ketone, 2.2 parts of acetopyruvic acid nickel, 1.7 parts of dibutyl ester is added, turned
1.6 hours are stirred under the rotating speed of 2100 r/min of speed；
（6）1.8 parts of methyl phenolic phenolic resin, 0.4 part of epoxidized vegetable oil are added under identical rotating speed, and in rotating speed 1700
Stirred 30 minutes under the rotating speed of r/min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
Experiment one：
Viscous toughness test is a kind of fine method for evaluating performance of modified bitumen, and the sphere of metal hemisphere is immersed into pitch during experiment
In, under the conditions of 25 DEG C, hemisphere is pulled out with the speed of 50mm/min, viscous toughness, toughness are obtained according to loading and deformation curve
Numerical value.Isolation test is to inject pitch into diameter about 25mm, be about in the aluminum pipe of 200mm, 48 is stored in 163 DEG C of baking ovens small
Shi Hou, equivalent cutting is upper, middle and lower segment, is determined between pitch and polymer by measuring upper and lower two sections of softening point difference
Storage stability or compatibility, softening point difference be less than 2.5 DEG C, then it is assumed that polymer modified asphalt stable storing.
Softening point of the present invention, viscous toughness according to《Highway asphalt Asphalt Pavement Construction Technique specification》（JTG F40-2004）Rule
Fixed method is carried out, and the modified pitch and the performance of modified asphalt obtained by three embodiments of the invention are entered separately below
Row test, as a result referring to table 1：
Table 1：
Conclusion (of pressure testing)：
Be may certify that through above-mentioned experiment and result of the test table, a kind of high performance modified bitumen and its preparation side that the present invention is provided
Method, by the raw material of embodiment 1,2 or 3 and asphalt performance obtained in preparation method apparently higher than traditional asphalt performance, it is and logical
Cross above-mentioned table 1 understand, by using embodiment 2 raw material and pitch experiment effect is optimal obtained in preparation method.
Experiment two：
The property modified pitch high prepared using the raw material and preparation method in above-described embodiment 4, according to T0604-2011,
T0606-2011、T0605-2011、T0624-2011、T0625-2011、T0620-2000、T0611-2011、T0607-2011、
The method that T0662-2000, T0661-2011 and T0609-2011 specify is tested, and test result is as follows：
Table 2
Conclusion (of pressure testing)：
The modified pitch for preparing is can be seen that from above-mentioned table 2,60 DEG C of dynamic viscosities are more than 50000Pa.s, and PG performance rates reach
Meeting high adhered modification index request to 82-22, to can be used for OGFC porous asphalt pavements and Heavy Traffic asphalt road surface etc. special
Occasion.
Show through test of many times：
Vinyl bis-stearamides（EBS）, methyl ethyl ketone, methyl phenolic phenolic resin, the third acetic acid, acetopyruvic acid nickel and two
After butyl ester is compounded according to a certain percentage, obvious synergistic effect can be produced.Third acetic acid, acetopyruvic acid nickel and dibutyl ester are in proportion
After compounding, it is measured using general test method, the dynamic viscosity to pitch lifts more than one times, and synergy is notable.
The invention is not limited in foregoing specific embodiment.The present invention is expanded to and any in this manual disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (3)
1. a kind of high performance modified bitumen, it is characterised in that：It is made up of the raw material of following weight parts：Pitch 70-100 parts, benzene
Ethylene-butadiene-styrene copolymer（SBS）3-7 parts, vinyl bis-stearamides（EBS）0.01-2 parts, vulcanizing agent 0.1-1
Part, antioxidant 0.1-1.5 part, methyl ethyl ketone 2-4 parts, age resistor 2-3 parts, 1-2.5 parts of methyl phenolic phenolic resin, epoxy plant
0.5-1 parts of thing oil, third acetic acid 2-4 parts, 1-3 parts, dibutyl ester 1-3 parts of acetopyruvic acid nickel；Pentaerythritol stearate 1-3 parts.
2. a kind of high performance modified bitumen described in claim 1, it is characterised in that：It is made up of the raw material of following weight parts：
82 parts of pitch, styrene-butadiene-styrene（SBS）3.5 parts, vinyl bis-stearamides（EBS）1.8 parts, vulcanization
0.6 part of agent, 1.2 parts of antioxidant, 3 parts of methyl ethyl ketone, 2.4 parts of age resistor, 1.7 parts of methyl phenolic phenolic resin, epoxy plant
0.7 part of oil, 2.8 parts of the third acetic acid, 1.5 parts of acetopyruvic acid nickel, 1.2 parts of dibutyl ester；2.7 parts of pentaerythritol stearate.
3. the preparation method of a kind of high performance modified bitumen described in claim 1, it is characterised in that：It is comprised the following steps：
（1）The weight portion as shared by each raw material is：Pitch 70-100 parts, styrene-butadiene-styrene（SBS）3-7
Part, vinyl bis-stearamides（EBS）0.01-2 parts, vulcanizing agent 0.1-1 parts, antioxidant 0.1-1.5 parts, methyl ethyl ketone 2-4
Part, age resistor 2-3 parts, 1-2.5 parts of methyl phenolic phenolic resin, epoxidized vegetable oil 0.5-1 parts, the third acetic acid 2-4 parts, levulinic
1-3 parts, dibutyl ester 1-3 parts of ketone acid nickel；It is pentaerythritol stearate 1-3 parts, standby；
（2）Matrix pitch is fitted into 165 DEG C~180 DEG C are heated in the asphalt tank with agitating device, open agitating device simultaneously
Add 0.01-2 parts of EBS；
（3）By SBS, pentaerythritol stearate 1-3 parts, add heating after matrix pitch in, open high-speed shearing machine rotating speed
4800-5200r/min shears 1-2h, is made SBS modified pitch；
（4）Temperature is maintained into 175 °C, 0.1-1 parts of vulcanizing agent of addition, antioxidant 0.1-1.5 parts, age resistor 2-3 parts, the third acetic acid
2-4 parts, 1 hour is stirred under the rotating speed of 2800-3500r/min；
（5）Temperature is risen to 180 °C, add 2-4 part of methyl ethyl ketone, 1-3 parts of acetopyruvic acid nickel, dibutyl ester 1-3 parts, turn
1.5-2 hour is stirred under the rotating speed of fast 2200-2500 r/min；
（6）1-2.5 parts, epoxidized vegetable oil 0.5-1 parts of methyl phenolic phenolic resin is added under identical rotating speed, and in rotating speed
Stirred 30 minutes under the rotating speed of 1500-1800 r/min；
（7）By modified pitch obtained above take in holding vessel in and stirred, be made high performance modified bitumen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611168408.5A CN106751968A (en) | 2016-12-16 | 2016-12-16 | A kind of high performance modified bitumen and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611168408.5A CN106751968A (en) | 2016-12-16 | 2016-12-16 | A kind of high performance modified bitumen and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504115A (en) * | 2018-04-20 | 2018-09-07 | 河海大学 | A kind of special high adhered modification pitch of drainage pavement and preparation method |
| CN115073928A (en) * | 2022-07-16 | 2022-09-20 | 陕西国琳建设工程有限公司 | Phenolic resin modified asphalt and preparation method thereof |
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| CN104098918A (en) * | 2013-04-11 | 2014-10-15 | 上海建设机场道路工程有限公司 | Modified asphalt and preparation method thereof |
| CN105647207A (en) * | 2016-03-03 | 2016-06-08 | 中国石油化工股份有限公司 | High-temperature-resistant SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN105802258A (en) * | 2016-03-09 | 2016-07-27 | 盘锦华冠中交路星道路沥青有限公司 | Pitch modified by high-viscosity and high-elasticity body and preparation method of pitch |
| CN106046813A (en) * | 2016-06-07 | 2016-10-26 | 中海沥青股份有限公司 | PG (performance graded) compound asphalt modifier and modified asphalt prepared from same |
| CN106167624A (en) * | 2016-08-05 | 2016-11-30 | 济南正驰生物科技有限公司 | A kind of road asphalt modifier containing modified styrene butadiene styrene block copolymer and preparation method thereof |
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|---|---|---|---|---|
| CN101671143A (en) * | 2008-09-09 | 2010-03-17 | 河南现代交通道路科技有限责任公司 | SBS modified asphalt and preparation method thereof |
| CN104098918A (en) * | 2013-04-11 | 2014-10-15 | 上海建设机场道路工程有限公司 | Modified asphalt and preparation method thereof |
| CN105647207A (en) * | 2016-03-03 | 2016-06-08 | 中国石油化工股份有限公司 | High-temperature-resistant SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
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| CN106046813A (en) * | 2016-06-07 | 2016-10-26 | 中海沥青股份有限公司 | PG (performance graded) compound asphalt modifier and modified asphalt prepared from same |
| CN106167624A (en) * | 2016-08-05 | 2016-11-30 | 济南正驰生物科技有限公司 | A kind of road asphalt modifier containing modified styrene butadiene styrene block copolymer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504115A (en) * | 2018-04-20 | 2018-09-07 | 河海大学 | A kind of special high adhered modification pitch of drainage pavement and preparation method |
| CN108504115B (en) * | 2018-04-20 | 2020-08-25 | 河海大学 | Special high-viscosity modified asphalt for drainage pavement and preparation method thereof |
| CN115073928A (en) * | 2022-07-16 | 2022-09-20 | 陕西国琳建设工程有限公司 | Phenolic resin modified asphalt and preparation method thereof |
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Application publication date: 20170531 |