CN107739520A - A kind of SEBS/ charcoals composite modified asphalt and preparation method thereof - Google Patents
A kind of SEBS/ charcoals composite modified asphalt and preparation method thereof Download PDFInfo
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- CN107739520A CN107739520A CN201711050070.8A CN201711050070A CN107739520A CN 107739520 A CN107739520 A CN 107739520A CN 201711050070 A CN201711050070 A CN 201711050070A CN 107739520 A CN107739520 A CN 107739520A
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- sebs
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- charcoals
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a kind of SEBS/ charcoals composite modified asphalt and preparation method thereof, the SEBS/ charcoals composite modified asphalt includes SEBS, charcoal and matrix pitch, and its preparation method is：Heated substrate pitch, SEBS is added into the matrix pitch after heating, stirred, sheared, swelling, obtain modified pitch, it is standby；Charcoal is dried, and is cooled to room temperature, the charcoal after must cooling down is standby；Charcoal after the cooling is added in the modified pitch, stirring, shearing, obtains SEBS/ charcoal composite modified asphalts.Composite asphalt provided by the invention has higher high-temperature stability, and does not influence the crack resistance at low-temperature of itself, is suitable for the strong area of high temperature, Ultraviolet Light At High Altitude and uses, the open gradation road for being particularly suitable for use in higher to ageing properties requirement；Its preparation method is simple, can be economic and environment-friendly to the reasonable utilization of charcoal.
Description
Technical field
The present invention relates to pavement construction material field, and in particular to a kind of SEBS/ charcoals composite modified asphalt and its system
Preparation Method.
Background technology
SEBS is the block copolymerization obtained to thermoplastic elastic body styrene-butadiene-styrene (SBS) selective hydrogenation
Thing.The crack resistance at low-temperature of conventional SEBS modified pitch is poor, high-temperature stability is bad, and its cost is high, makes its nothing
Method uses in southern high-temperature heavy duty area and the strong area of Ultraviolet Light At High Altitude.
Charcoal is biomass (material such as agriculture, forestry residue and organic waste caused by life) oxygen-deficient
Under the conditions of be pyrolyzed obtained carbonaceous solid residue, charcoal it is soluble extremely low, there is height carboxylic esterification and aromatization knot
Structure, and porosity and specific surface area are larger, are the materials that a kind of carbon content is high, porous, adsorption capacity is strong, widely used.Biology
Charcoal has the property and form of carbon as a kind of accessory substance of biological material, the utilization rate to charcoal and utilizes shape at present
Formula is limited.
At present, with the reduction of the mineral resources such as oil and the aggravation of greenhouse effects, obtain biomass resource very big
Concern.Biomass resource is a kind of environmentally friendly renewable resource, and biomass is derived from oil.Charcoal is biomass in oxygen
Obtained carbonaceous solid residue is pyrolyzed under conditions of unsaturated vapor, asphalt performance is improved using it as modifying agent, not only
The crisis of mineral resources can be alleviated, can also alleviate climatic issues.Charcoal can improve the high-temperature behavior of pitch, be suitable for south
High temperature heavy load area.But the use of charcoal significantly reduces the crack resistance at low-temperature of pitch, make the combination property of pitch
Influenceed by certain.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of SEBS/ charcoals are composite modified
Pitch and preparation method thereof, the SEBS/ charcoals composite modified asphalt has higher high-temperature stability, and does not influence itself
Crack resistance at low-temperature, its preparation method is simple, can be economic and environment-friendly to the reasonable utilization of charcoal.
In order to achieve the above object, the present invention is achieved using following technical scheme.
(1) a kind of SEBS/ charcoals composite modified asphalt, including following raw material：SEBS, charcoal and matrix pitch.
Preferably, the SEBS accounts for the 5%-9% of the matrix pitch quality.
Preferably, the charcoal accounts for the 2%-16% of the matrix pitch quality.
It is further preferred that the charcoal accounts for the 2%-4% of the matrix pitch quality.
Preferably, the SEBS is YH-503SEBS.
Preferably, the charcoal is DS-510F charcoals.
Preferably, the matrix pitch is SK90 matrix pitches.
(2) a kind of preparation method of SEBS/ charcoals composite modified asphalt, including following preparation process：
Step 1, heated substrate pitch, SEBS is added into the matrix pitch after heating, stirred, sheared, swelling, obtain modification
Pitch, it is standby；
Step 2, charcoal is dried, is cooled to room temperature, the charcoal after must cooling down is standby；
Step 3, the charcoal after the cooling is added in the modified pitch, stirring, shearing, obtains SEBS/ charcoals
Composite modified asphalt.
Preferably, in step 1, the heating-up temperature of the matrix pitch is 160-170 DEG C, and the time of heating is 60-
90min。
Preferably, in step 1, the temperature of the stirring is 160-170 DEG C, and the time of stirring is 10-15min.
Preferably, in step 1, the speed of the shearing is 5000r/min, and the temperature of shearing is 160 DEG C -180 DEG C, shearing
Time be 30min.
Preferably, in step 1, the temperature of the swelling is 170-180 DEG C, and the time of swelling is 0.9-1.1h.
Preferably, in step 2, the temperature of the charcoal drying is 110-130 DEG C, and the time of drying is 1.9-2.1h.
Preferably, in step 3, the number of the addition of the charcoal after the cooling is 3-7 times, and the time of addition is 10-
15min。
Preferably, in step 3,150 DEG C -160 DEG C of the temperature of the stirring, the time of stirring is 10-20min.
Preferably, in step 3, the speed of the shearing is 5000r/min, and the temperature of shearing is 150 DEG C -160 DEG C, shearing
Time be 1h.
Compared with prior art, beneficial effects of the present invention are：
SEBS and charcoal are used cooperatively in SEBS/ charcoals composite modified asphalt provided by the invention, can substantially be carried
The high-temperature stability of high SEBS/ charcoals composite modified asphalt, and the low temperature that can improve SEBS/ charcoal composite modified asphalts resists
Fragility.Meanwhile when the volume of charcoal is 2-4%, and SEBS volume is no more than 9%, SEBS/ charcoal composite modified asphalts
Low-temperature cracking-resistance and high-temperature stability it is preferable.The SEBS/ charcoal composite modified asphalts of gained of the invention be suitable for high temperature,
The strong area of Ultraviolet Light At High Altitude uses, the open gradation road for being particularly suitable for use in higher to ageing properties requirement.
SEBS in SEBS/ charcoal composite modified asphalts has good anti-Ultraviolet Ageing Effect, makes SEBS/ charcoals
Composite modified asphalt has more preferable resistance to UV aging than the SBS modified pitch of routine, uses the SEBS/ biologies of the present invention
During charcoal composite modified asphalt surfacing, the service life on road surface can be increased, reduce the maintenance cost on road surface.The present invention's
The preparation method of SEBS/ charcoal composite modified asphalts is simple, reasonable, is easy to industrialized production and application, into plain asphalt
Charcoal is added, ageing resistace, antifatigue cracking performance and the reduction temperature sensitivity of matrix pitch, and charcoal can be improved
Use not only improved the utilization rate of resource but also had improvement result to environment.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
It will be appreciated that the following example is merely to illustrate the present invention, and it is not construed as limiting the scope of the present invention.
Embodiment 1
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 5% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 4%.
The preparation method of above-mentioned SEBS/ charcoals composite modified asphalt, including following preparation process：
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 12.5min is stirred at 165 DEG C, under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is sheared, then the swelling development 1h in 170 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 4 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 155 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 2
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 5% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 8%.
The preparation method of above-mentioned SEBS/ charcoals composite modified asphalt, including following preparation process：
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 12.5min is stirred at 165 DEG C, under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is sheared, then the swelling development 1h in 170 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 5 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 155 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 3
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 5% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 12%.
The preparation method of above-mentioned SEBS/ charcoals composite modified asphalt, including following preparation process：
Step 1, matrix pitch is heated to heating 60min in 160 DEG C of baking oven to molten state, dripped to the matrix after heating
YH-503SEBS is added in green grass or young crops, 165 DEG C stir 12.5min, shear temperature be 170 DEG C, shear rate be 5000r/min bars
Part down cut 30min, then the swelling development 1h in 170 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 6 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 155 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 4
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 5% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 16%.
The preparation method of above-mentioned SEBS/ charcoals composite modified asphalt, including following preparation process：
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 12.5min is stirred at 165 DEG C, under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is sheared, then the swelling development 1h in 170 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 7 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 155 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 5
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 7% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 4%.
Step 1, matrix pitch is heated to heating 60min in 160 DEG C of baking oven to molten state, dripped to the matrix after heating
YH-503SEBS is added in green grass or young crops, 160 DEG C stir 10min, shear temperature be 170 DEG C, shear rate be 5000r/min conditions
Down cut 30min, then the swelling development 1h in 160 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 4 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 150 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 6
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 9% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 4%.
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 15min is stirred at 170 DEG C, is cut under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is cut, then the swelling development 1h in 180 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 4 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 160 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 7
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 7% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 2%.
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 15min is stirred at 170 DEG C, is cut under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is cut, then the swelling development 1h in 180 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 3 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 160 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 8
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 9% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 2%.
Step 1, matrix pitch is heated into 60min to molten state in 160 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 15min is stirred at 170 DEG C, is cut under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is cut, then the swelling development 1h in 180 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2h in 120 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, after obtaining cooling
Charcoal, it is standby；
Step 3, the charcoal after cooling points 3 times is added in modified pitch in 15min, stirred at 155 DEG C
20min, shear temperature be 160 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 9
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 7% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 2%.
Step 1, matrix pitch is heated into 90min to molten state in 170 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 15min is stirred at 170 DEG C, is cut under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is cut, then the swelling development 1.1h in 170 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 2.1h in 110 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, must cooled down
Charcoal afterwards, it is standby；
Step 3, the charcoal after cooling points 3 times is added in modified pitch in 15min, stirred at 150 DEG C
10min, shear temperature be 160 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Embodiment 10
A kind of SEBS/ charcoals composite modified asphalt, including following raw material：SK90 matrix pitches 500g, account for SK90 matrix
The YH-503SEBS of asphalt quality 7% and the DS-510F charcoals for accounting for SK90 matrix pitches quality 2%.
Step 1, matrix pitch is heated into 75min to molten state in 165 DEG C of baking oven, into the matrix pitch after heating
YH-503SEBS is added, 15min is stirred at 170 DEG C, is cut under the conditions of shear temperature is 170 DEG C, shear rate is 5000r/min
30min is cut, then the swelling development 0.9h in 175 DEG C of baking oven, obtains modified pitch, standby；
Step 2, charcoal is dried into 1.9h in 130 DEG C of baking oven, is put into drying receptacle and is cooled to room temperature, must cooled down
Charcoal afterwards, it is standby；
Step 3, the charcoal after cooling points 5 times is added in modified pitch in 15min, stirred at 160 DEG C
15min, shear temperature be 160 DEG C, shear rate be 5000r/min condition down cut 1h, it is composite modified to obtain SEBS/ charcoals
Pitch.
Comparative example 1
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The SEBS of blue or green quality 5%.
The preparation method of above-mentioned modified pitch, including following preparation process：
Matrix pitch is heated into 60min to molten state at 160 DEG C, SEBS is added into the matrix pitch after heating, stirs
10min is mixed, it in shear rate is 170 DEG C of condition down cut 30min for 5000r/min, shear temperature to use high-speed shearing machine,
60min is swelled in 170 DEG C of insulating box, obtains modified pitch.
Comparative example 2
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The SEBS of blue or green quality 7%.
The preparation method of above-mentioned modified pitch, including following preparation process：
Matrix pitch is heated into 60min to molten state at 160 DEG C, SEBS is added into the matrix pitch after heating, stirs
10min is mixed, it in shear rate is 170 DEG C of condition down cut 30min for 5000r/min, shear temperature to use high-speed shearing machine,
60min is swelled in 170 DEG C of insulating box, obtains modified pitch.
Comparative example 3
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The SEBS of blue or green quality 9%.
The preparation method of above-mentioned modified pitch, including following preparation process：
Matrix pitch is heated into 60min to molten state at 160 DEG C, SEBS is added into the matrix pitch after heating, stirs
10min is mixed, it in shear rate is 170 DEG C of condition down cut 30min for 5000r/min, shear temperature to use high-speed shearing machine,
60min is swelled in 170 DEG C of insulating box, obtains modified pitch.
Comparative example 4
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The charcoal of blue or green quality 2%.
The preparation method of above-mentioned modified pitch is：Matrix pitch is heated into 60min to molten state at 160 DEG C, to heating
Add dry charcoal in matrix pitch afterwards, stir 20min, use high-speed shearing machine shear rate for 5000r/min,
Shear temperature is 160 DEG C of condition down cut 1h, obtains modified pitch.
Comparative example 5
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The charcoal of blue or green quality 4%.
The preparation method of above-mentioned modified pitch is：Matrix pitch is heated into 60min to molten state at 160 DEG C, to heating
Add dry charcoal in matrix pitch afterwards, stir 20min, use high-speed shearing machine shear rate for 5000r/min,
Shear temperature is 160 DEG C of condition down cut 1h, obtains modified pitch.
Comparative example 6
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The charcoal of blue or green quality 8%.
The preparation method of above-mentioned modified pitch is：Matrix pitch is heated into 60min to molten state at 160 DEG C, to heating
Add dry charcoal in matrix pitch afterwards, stir 20min, use high-speed shearing machine shear rate for 5000r/min,
Shear temperature is 160 DEG C of condition down cut 1h, obtains modified pitch.
Comparative example 7
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The charcoal of blue or green quality 12%.
The preparation method of above-mentioned modified pitch is：Matrix pitch is heated into 60min to molten state at 160 DEG C, to heating
Add dry charcoal in matrix pitch afterwards, stir 20min, use high-speed shearing machine shear rate for 5000r/min,
Shear temperature is 160 DEG C of condition down cut 1h, obtains modified pitch.
Comparative example 8
A kind of modified pitch, include the raw material of following mass percent：SK90 matrix pitches 500g drips with SK90 matrix is accounted for
The charcoal of blue or green quality 16%.
The preparation method of above-mentioned modified pitch is：Matrix pitch is heated into 60min to molten state at 160 DEG C, to heating
Add dry charcoal in matrix pitch afterwards, stir 20min, use high-speed shearing machine shear rate for 5000r/min,
Shear temperature is 160 DEG C of condition down cut 1h, obtains modified pitch.
Tensile strength, stress at definite elongation and elongation rate of tensile failure basic nature are broken to the YH-503SEBS used in above-described embodiment
It can be tested, test method refers to GB/T528-1998《Vulcanize the survey of rubber or thermoplastic elastomer tensile stress-strain performance
It is fixed》, viscosity is tested to be tested using Brookfield viscosity apparatus, and result of the test is as shown in table 1.
The YH-503 SEBS of table 1 fundamental performance parameter
| Performance | Unit | Representative value |
| Structure | — | Line style |
| Ethylene contents | Wt% | 33% |
| Break tensile strength | MPa | 25 |
| 300% stress at definite elongation | MPa | 6.0 |
| Elongation rate of tensile failure | % | 500 |
| 10% solution viscosity at 25 DEG C | Pa*s | 1500 |
The basic performance of DS-510F charcoals used is as shown in table 2 in above-described embodiment.
The DS-510F charcoal fundamental performance parameters of table 2
Experiment
To the SEBS/ charcoals composite modified asphalt obtained by above-described embodiment and the modified pitch obtained by comparative example
Needle penetration, ductility and softening point are tested, specific as follows：
1) test method：The test method of needle penetration, ductility and softening point refers to JTG E20-2011《Highway engineering pitch
And Asphalt Mixture Experiment engineering》.
Experiment 1
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 1 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 2
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 2 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 3
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 3 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 4
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 4 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 5
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 5 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 6
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 6 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 7
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 7 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Experiment 8
By the SEBS/ charcoals composite modified asphalt of the gained of embodiment 8 by above-mentioned test method to its needle penetration, ductility and
Softening point is tested, and result of the test is as shown in table 3.
Contrast test 1
Matrix pitch is tested its needle penetration, ductility and softening point by above-mentioned test method, result of the test such as table 3
It is shown.
Contrast test 2
The modified pitch of the gained of comparative example 1 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 3.
Contrast test 3
The modified pitch of the gained of comparative example 2 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 3.
Contrast test 4
The modified pitch of the gained of comparative example 3 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 3.
Contrast test 5
The modified pitch of the gained of comparative example 4 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 4.
Contrast test 6
The modified pitch of the gained of comparative example 5 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 4.
Contrast test 7
The modified pitch of the gained of comparative example 6 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 4.
Contrast test 8
By the modified pitch of the gained of comparative example 7 by above-mentioned test method to its needle penetration, ductility and softening
Point is tested, and result of the test is as shown in table 4.
Contrast test 9
The modified pitch of the gained of comparative example 8 is carried out by above-mentioned test method to its needle penetration, ductility and softening point
Test, result of the test are as shown in table 4.
2) result of the test：Result of the test is as shown in Table 3 and Table 4.
Table 3
Table 4
As shown in Table 3, test needle penetrations of the 1-8 at 15 DEG C and be less than needle penetration of the contrast test 1 at 15 DEG C, show
In SEBS/ charcoal composite modified asphalts, charcoal can interact with SEBS, can significantly improve matrix pitch in 15 DEG C of low temperature
Under denseness；Test needle penetrations of the 1-8 at 25 DEG C and be less than needle penetration of the contrast test 1 at 25 DEG C, show in SEBS/ biologies
In charcoal composite modified asphalt, charcoal can interact with SEBS, can significantly improve denseness of the matrix pitch at 25 DEG C of normal temperature；
Test needle penetrations of the 1-8 at 25 DEG C and be less than needle penetration of the contrast test 1 at 25 DEG C, show to change SEBS/ charcoals are compound
In property pitch, charcoal can interact with SEBS, can significantly improve denseness of the matrix pitch at 25 DEG C of normal temperature；Test 1-8
Needle penetration at 30 DEG C is less than needle penetration of the contrast test 1 at 30 DEG C, shows in SEBS/ charcoal composite modified asphalts
In, charcoal can interact with SEBS, can significantly improve denseness of the matrix pitch at 30 DEG C of high temperature.
As shown in Table 3, the ductility for testing 1-4 is less than the ductility of contrast test 2, and the ductility of experiment 5 and experiment 7 is less than contrast
The ductility of the ductility of experiment 3, experiment 6 and experiment 8 is less than the ductility of contrast test 4, shows the modified pitch without charcoal
Low-temperature cracking-resistance is than the SEBS/ charcoals composite modified asphalt containing charcoal more preferably.Experiment 1-4 ductility is successively decreased successively, experiment 5
Ductility less than the ductility of experiment 7, test the ductility of 6 ductility less than experiment 8, show that the volume of charcoal is lower, SEBS/ lifes
The low-temperature cracking-resistance of thing charcoal composite modified asphalt is higher.From experiment 1 and experiment 5-8 ductility value, when SEBS volume exists
When 9%,
The low-temperature cracking-resistance of SEBS/ charcoal composite modified asphalts is optimal.
As shown in Table 3, the softening point for testing 1-8 is higher than the softening point of contrast test 1, shows that charcoal can be mutually with SEBS
Effect, the high-temperature stability of SEBS/ charcoal composite modified asphalts can be significantly improved.The softening point for testing 1-4 is higher than to having a competition
2 softening point is tested, tests 5 softening points for being higher than contrast test 3 with the softening point for testing 7, experiment 6 and the softening point height for testing 8
In the softening point of contrast test 4, show the SEBS/ charcoals composite modified asphalt containing charcoal than the modified drip without charcoal
Blue or green high-temperature stability is more preferably.The softening point of experiment 6 and experiment 8 shows, the volume of charcoal exists higher than the softening point of experiment 8
During 2-4%, the high-temperature stable of SEBS/ charcoal composite modified asphalts is more preferably.The softening point of experiment 1, experiment 5 and experiment 6 is successively
The softening point of increase, experiment 7 and experiment 8 increases successively, shows that SEBS volume is bigger, SEBS/ charcoal composite modified asphalts
High-temperature stability it is higher.
From table 3 and table 4, needle penetration, softening point and the ductility effect for testing 1-8 are better than contrast test 5-9 pin
In-degree, softening point and ductility, after illustrating SEBS and the compound addition of charcoal, can not only further improve pitch high-temperature behavior and
Denseness, moreover it is possible to improve influence of the charcoal to the cryogenic property of pitch to a certain extent, reach comprehensive raising asphalt performance
Effect.Contrast test 5-9 ductilometers is fracture, is shown modified to matrix pitch as modifying agent only with charcoal
The freezing crack poor-performing of the modified pitch arrived.
In summary, in SEBS/ charcoal composite modified asphalts, charcoal can interact with SEBS, can substantially carry
The denseness and high-temperature stability of high SEBS/ charcoals composite modified asphalt at different temperatures.Consider charcoal and SEBS
The high cost of influence and SEBS to the low-temperature cracking-resistance and high-temperature stability of SEBS/ charcoal composite modified asphalts, selection
The volume of charcoal is 2-4%, and SEBS volume is no more than 9%, is the preferred use of SEBS/ charcoal composite modified asphalt raw materials
Amount.
Although the present invention is described in detail with a general description of the specific embodiments in this specification,
But on the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
Enclose.
Claims (10)
1. a kind of SEBS/ charcoals composite modified asphalt, it is characterised in that including following raw material：SEBS, charcoal and matrix drip
It is blue or green.
2. SEBS/ charcoals composite modified asphalt according to claim 1, it is characterised in that the SEBS accounts for the base
The 5%-9% of matter asphalt quality, the charcoal account for the 2%-16% of the matrix pitch quality.
3. a kind of preparation method of SEBS/ charcoals composite modified asphalt, it is characterised in that including following preparation process：
Step 1, heated substrate pitch, SEBS is added into the matrix pitch after heating, stirred, sheared, swelling, obtain modified drip
Green grass or young crops, it is standby；
Step 2, charcoal is dried, is cooled to room temperature, the charcoal after must cooling down is standby；
Step 3, the charcoal after the cooling is added in the modified pitch, stirring, shearing, it is compound obtains SEBS/ charcoals
Modified pitch.
4. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 1
In, the heating-up temperature of the matrix pitch is 160-170 DEG C, and the time of heating is 60-90min.
5. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 1
In, the temperature of the stirring is 160-170 DEG C, and the time of stirring is 10-15min.
6. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 1
In, the speed of the shearing is 5000r/min, and the temperature of shearing is 160 DEG C -180 DEG C, and the time of shearing is 30min.
7. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 1
In, the temperature of the swelling is 170-180 DEG C, and the time of swelling is 0.9-1.1h.
8. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 2
In, the temperature of the charcoal drying is 110-130 DEG C, and the time of drying is 1.9-2.1h.
9. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 3
In, the number of the addition of the charcoal after the cooling is 3-7 times, and the time of addition is 10-15min.
10. the preparation method of SEBS/ charcoals composite modified asphalt according to claim 3, it is characterised in that step 3
In, the speed of the shearing is 5000r/min, and the temperature of shearing is 150 DEG C -160 DEG C, and the time of shearing is 1h.
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| CN111019365A (en) * | 2019-11-29 | 2020-04-17 | 复旦大学 | Method for preparing biological asphalt from lignocellulose biomass hydrothermal carbon |
| CN113956672A (en) * | 2021-09-27 | 2022-01-21 | 山西省交通科技研发有限公司 | Biomass pyrolysis biological asphalt material and preparation method thereof |
| CN114015253A (en) * | 2021-11-24 | 2022-02-08 | 新疆华雄再生资源科技有限公司 | Preparation method of road plant modified asphalt |
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| CN114015253A (en) * | 2021-11-24 | 2022-02-08 | 新疆华雄再生资源科技有限公司 | Preparation method of road plant modified asphalt |
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