CN108517126A - A kind of rubber powder modified asphalt and preparation method thereof - Google Patents
A kind of rubber powder modified asphalt and preparation method thereof Download PDFInfo
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- CN108517126A CN108517126A CN201810310742.2A CN201810310742A CN108517126A CN 108517126 A CN108517126 A CN 108517126A CN 201810310742 A CN201810310742 A CN 201810310742A CN 108517126 A CN108517126 A CN 108517126A
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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
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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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 discloses a kind of rubber powder modified asphalts and preparation method thereof, are related to modified asphalt technology field.The rubber powder modified asphalt of offer is mainly made of the raw material of following parts by weight meter：30~40 parts of rock asphalt, 20~30 parts of polyphosphoric acids, 10~50 parts of rubber powder, 2~3 parts of stabilizer, 1~5 part of SBS modifier, 1~2 part of PE modifying agent, 1~10 part of solubilizer, 1~3 part of aromatic naphtha.The difficulty of construction of the rubber powder modified asphalt is small, and needle penetration reduces, and softness number increases, and stability is improved.
Description
Technical field
The present invention relates to modified asphalt technology fields, and more particularly to a kind of rubber powder modified asphalt and preparation method thereof.
Background technology
With the increase of car owning amount, the waste tire quantity as solid waste is also increased sharply therewith.For waste and old
The processing of rubber tyre, the method that people's once trial is buried or burned still bury waste and the spy that can cause land resource
Allow pollution.Burning, which then discharges harmful substance, can cause air and underground water pollution, aggravate global warming, cannot be fundamentally
Solve the process problem of waste tire.The long-term air storage of a large amount of waste tires, not only causes the significant wastage of resource, Er Qierong
Easily accumulate sewage and grow mosquito, with the passing of time spontaneous combustion causes fire, but also release pernicious gas pollutes air in slow decompose.By
It is very very long in the process of waste tire natural degradation, therefore, become the black public hazards all spread rapidly in each state.
Waste tire main component is natural rubber powder, elastomer powder, carbon black, antioxidant and metal oxide etc.,
These substances are substantially beneficial to improving asphalt performance.Road researcher is applied in modified pitch already, manufacture
The rubber powder modified asphalt of novel high-performance not only solves environment and land occupation problem that waste tire zone of illuviation comes.
But in the prior art, modified pitch there are difficulty of construction big, the technical problem of stability difference.
Invention content
The purpose of the present invention is to provide rubber powder modified asphalt, the difficulty of construction of this rubber powder modified asphalt is small, and needle enters
Degree reduces, and softness number increases, and stability is improved.
Another object of the present invention is to provide a kind of preparation method of rubber powder modified asphalt, this preparation method simply may be used
Row, while the characteristic of each raw material can be combined, it is prepared that difficulty of construction is small, and needle penetration is small, softness number and the high rubber of stability
Powder-modified asphalt.
The present invention solves its technical problem using following technical scheme to realize.
The present invention proposes a kind of rubber powder modified asphalt, and rubber powder modified asphalt is mainly by the raw material of following parts by weight meter
It is made：
30~40 parts of rock asphalt, 20~30 parts of polyphosphoric acids, 10~50 parts of rubber powder, 2~3 parts of stabilizer, 1
~5 parts of SBS modifier, 1~2 part of PE modifying agent, 1~10 part of solubilizer, 1~3 part of aromatic naphtha.
The present invention proposes a kind of preparation method of rubber powder modified asphalt comprising：
Rock asphalt is heated to addition rubber powder after 170~210 DEG C to stir with the mixing speed of 2000~3000r/min
The first mixture is obtained after mixing；
First mixture is sheared into 45~50min with the shear rate of 4500~5000r/min, and stabilizer, SBS is added
After modifying agent and PE modifying agent, the second mixture is obtained after stirring development under conditions of 170~200 DEG C；
Second mixture is added after polyphosphoric acids to stir with the speed of 500~600r/min and obtains the after 30~40min
Three mixtures；
Solubilizer is added in third mixture and 40~50min of swelling is subsequent at a temperature of 170~200 DEG C after aromatic naphtha
The continuous shear rate with 4500~5000r/min shears 45~50min.
The advantageous effect of the rubber powder modified asphalt of the embodiment of the present invention and preparation method thereof is：
The embodiment provides a kind of rubber powder modified asphalts, including rock asphalt, poly phosphorus after rational proportion
Acid, rubber powder, stabilizer, SBS modifier, PE modifying agent, solubilizer and aromatic naphtha.Pass through rock asphalt, rubber powder and more
The rational proportion of polyphosphoric acid is modified pitch so that and the needle penetration of modified pitch reduces, and softness number increases, and
While high temperature surely improves, difficulty of construction is reduced.Meanwhile by stabilizer with, SBS modifier, PE modifying agent it is reasonable
Proportioning is so that the stability of modified pitch increases, while improving the low-temperature resistance cracking resistance of pitch so that modified pitch
Penetration further decrease, softness number further increases, to further decrease difficulty of construction.Also, by solubilizer with
The swelling that the addition of aromatic naphtha has greatly facilitated SBS modifier, PE modifying agent further increases conducive to network structure is formed
The stability of modified pitch, reduces difficulty of construction.
The embodiments of the present invention also provide a kind of preparation method of rubber powder modified asphalt, this preparation method simply may be used
Row, while the characteristic of each raw material can be combined, it is prepared that difficulty of construction is small, and needle penetration is small, softness number and the high rubber of stability
Powder-modified asphalt.
Specific implementation mode
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of rubber powder modified asphalt of the embodiment of the present invention and preparation method thereof is specifically described below.
The embodiment provides a kind of rubber powder modified asphalt, rubber powder modified asphalt is mainly by following parts by weight
The raw material of number meter is made：
30~40 parts of rock asphalt, 20~30 parts of polyphosphoric acids, 10~50 parts of rubber powder, 2~3 parts of stabilizer, 1
~5 parts of SBS modifier, 1~2 part of PE modifying agent, 1~10 part of solubilizer, 1~3 part of aromatic naphtha.
Wherein, as a preferred option, in an embodiment of the present invention, rubber powder modified asphalt is mainly by following parts by weight
The raw material of number meter is made：
35 parts of rock asphalt, 25 parts of polyphosphoric acids, 25 parts of rubber powder, 2.5 parts of stabilizer, 3 parts of SBS are modified
Agent, 1.5 parts of PE modifying agent, 5 parts of solubilizer, 2 parts of aromatic naphtha.Pass through the conjunction of rock asphalt, rubber powder and polyphosphoric acids
Reason is modified with pitch is compared so that the needle penetration of modified pitch reduces, and softness number increases, and is surely carried in high temperature
While high, difficulty of construction is reduced.Meanwhile to change with, the rational proportion of SBS modifier, PE modifying agent by stabilizer
Property after the stability of pitch increase, while improving the low-temperature resistance cracking resistance of pitch so that the penetration of modified pitch into
One step reduces, and softness number further increases, to further decrease difficulty of construction.Also, by solubilizer and aromatic naphtha plus
The swelling for entering to have greatly facilitated SBS modifier, PE modifying agent further improves modified conducive to network structure is formed
The stability of pitch, reduces difficulty of construction.
Specifically, rock asphalt is that oil passes through the deposition up to 1 years, variation, in heat, pressure, oxidation, catalyst, bacterium
Deng comprehensive function under the bitumen that generates.It is commonly used for matrix pitch modifying agent.The physical characteristic of rock asphalt levels off to
" coal ".
Specifically, using rubber powder carry out asphalt modification so that rubber asphalt not only have it is higher cohere agent content with it is good
Good elasticity, improves the ability that road surface generates fatigue crack and reflection crack of resisting, and its higher viscosity, softening point and
Elasticity, improves the ability of high temperature resistance to permanent deformation, while reducing temperature sensitivity, improves the performance in low-temperature resistance crack,
High viscosity and elastomeric rubber asphalt also improve the durability and anti-fatigue life of mixture, can subtract under certain condition
Thin road surface thickness, prolongs the service life simultaneously, reduces the noise that wheel is generated in high speed scroll on road surface, and it is comfortable to improve driving
Property.
Specifically, polyphosphoric acids is a kind of glutinous thick liquid of water white transparency, has corrosivity, belongs to two pole mineral acids corrosion
Article.Polyphosphoric acids is Bronsted acid, can dissolve a variety of low molecules and macromolecular organic compound.It is used as dehydration in organic synthesis
Agent, cyclizing agent, acylating agent are the catalyst or solvent of the reactions such as condensation, cyclisation, rearrangement, substitution.Sometimes condensed phosphate is used
(PPE) class is to increase the solubility of polyphosphoric acids in organic solvent.In addition polyphosphoric acids also serve as ortho-phosphoric substitute and
Analytical reagent.Polyphosphoric acids makes the needle penetration of modified pitch reduce, and softness number increases, and surely improved in high temperature
Meanwhile reducing difficulty of construction.
Specifically, rubber powder modified asphalt further includes 1~3 part of exothermic mixture.The addition of exothermic mixture can effectively improve
The high temperature resistant property of modified pitch simultaneously effective improves the softness number of pitch.In an embodiment of the present invention, exothermic mixture
Can be calcium oxide either metallic aluminium or metallic iron.Certainly, in other embodiments of the invention, the type of exothermic mixture may be used also
To be selected according to demand, the present invention does not limit.
Specifically, it is 1 that solubilizer, which is weight ratio,:6~10 polyox-yethylene-polyoxypropylene block copolymer and sorbierite shape
At mixture.Stabilizer is that weight ratio is 1:The mixture that 2~4 inorganic sulfur is formed with inorganic sulfide compound.Pass through solubilising
Agent and the addition of aromatic naphtha have greatly facilitated the swelling of SBS modifier, PE modifying agent, conducive to network structure is formed, further
The stability for improving modified pitch, reduces difficulty of construction.
The embodiments of the present invention also provide a kind of preparation methods of rubber powder modified asphalt comprising：
S1：By rock asphalt be heated to after 170~210 DEG C be added rubber powder with the mixing speed of 2000~3000r/min into
The first mixture is obtained after row stirring；Rock asphalt is heated to the condition of high temperature so that the rheological characteristic of rock asphalt is enhanced, the later stage
Machinability be improved.
S2：First mixture is sheared into 45~50min with the shear rate of 4500~5000r/min, and be added stabilizer,
After SBS modifier and PE modifying agent, the second mixture is obtained after stirring development under conditions of 170~200 DEG C；
S3：Second mixture is added after the speed after polyphosphoric acids with 500~600r/min stirs 30~40min and is obtained
Third mixture；
S4：Solubilizer is added in third mixture and is swollen 40~50min after aromatic naphtha at a temperature of 170~200 DEG C
Continue to shear 45~50min with the shear rate of 4500~5000r/min afterwards.
Specifically, in an embodiment of the present invention, rubber powder is added after rock asphalt being heated to 170~210 DEG C with 2000
The mixing speed of~3000r/min obtains the first mixture after being stirred, specifically include：
S11：Rock asphalt and rubber powder are crushed to after 30~80 mesh for use；The combination of rock asphalt and rubber powder after crushing
It is more careful so that the bond strength higher in conjunction with after.
S12：By the rock asphalt after crushing be heated to being added after 170~210 DEG C the rubber powder after crushing with 2000~
The mixing speed of 3000r/min obtains the first mixture after being stirred.
Specifically, in an embodiment of the present invention, the mixing speed for stirring development is 2000~3000r/min, when stirring
Between be 40~50min.Certainly, in other embodiments of the invention, the speed of stirring can be selected according to demand with the time
It selects, the embodiment of the present invention does not limit.
Specifically, in an embodiment of the present invention, the second mixture is added after polyphosphoric acids with 500~600r/min's
Speed obtains third mixture after stirring 30~40min, specifically includes：
The speed that second mixture is heated to being added after 250~270 DEG C after polyphosphoric acids with 500~600r/min is stirred
Third mixture is obtained after 30~40min and is cooled to 170~200 DEG C with the speed of 4 DEG C/min.First the second mixture is heated
To high temperature, it is then quickly cooled down the higher modified pitch of available softness number so that the stability of modified pitch is further
It improves, machinability also accordingly increases.
Specifically, in an embodiment of the present invention, third mixture is added after solubilizer and aromatic naphtha 170~200
Continue to shear 45~50min with the shear rate of 4500~5000r/min after being swollen 40~50min at a temperature of DEG C, it is specific to wrap
It includes：
S41：15~30min is kept the temperature after being heated to 300~400 DEG C after first mixture is mixed with solubilizer, then with 4
DEG C/speed of min is cooled to 170~200 DEG C；It is heated to high temperature and is then quickly cooled down the higher modified drip of available softness number
It is green so that the stability of modified pitch further increases, and machinability also accordingly increases.
S42：The mixture of the first mixture and solubilizer after being quickly cooled down is added after aromatic naphtha at 170~200 DEG C
At a temperature of be swollen 40~50min after continue to shear 45~50min with the shear rate of 4500~5000r/min.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of rubber modified asphalt is present embodiments provided, is mainly prepared by the following method to obtain：
S1：30 parts of rock asphalt in parts by weight is heated to being added in 10 parts of rubber powder after 170 DEG C, and with
The mixing speed of 2000r/min obtains the first mixture after being stirred；
Wherein, step S1 is specifically included：
S11：Rock asphalt and rubber powder are crushed to after 30 mesh for use；
S12：Rock asphalt after crushing is heated to being added the rubber powder after crushing after 170 DEG C with the stirring of 2000r/min
Speed obtains the first mixture after being stirred.
S2：First mixture is sheared into 45min with the shear rate of 4500r/min, and be added in parts by weight 2
Part stabilizer, after 1 part of SBS modifier and 1 part of PE modifying agent, with the speed of 2000r/min under conditions of 170 DEG C
The second mixture is obtained after stirring 30min developments；
S3：Second mixture is added after 20 parts of polyphosphoric acids in parts by weight and is stirred with the speed of 500r/min
Third mixture is obtained after mixing 30min；
S4：Third mixture is added after 1 part of solubilizer in parts by weight and 1 part of aromatic naphtha 170~
Continue to shear 45min with the shear rate of 4500r/min after being swollen 40min at a temperature of 200 DEG C.
Wherein, step S4 is specifically included：
S41：15min is kept the temperature after being heated to 300 DEG C after first mixture is mixed with solubilizer, then with 4 DEG C/min's
Speed is cooled to 170 DEG C；It is heated to high temperature and is then quickly cooled down the higher modified pitch of available softness number so that is modified
The stability of pitch further increases, and machinability also accordingly increases.
S42：The mixture of the first mixture and solubilizer after being quickly cooled down is added after aromatic naphtha in 170 DEG C of temperature
Continue to shear 45min with the shear rate of 4500r/min after lower swelling 40min.
Embodiment 2
A kind of rubber modified asphalt is present embodiments provided, is mainly prepared by the following method to obtain：
S1：35 parts of rock asphalt in parts by weight is heated to being added in 25 parts of rubber powder after 190 DEG C, and with
The mixing speed of 2500r/min obtains the first mixture after being stirred；
Wherein, step S1 is specifically included：
S11：Rock asphalt and rubber powder are crushed to after 50 mesh for use；
S12：Rock asphalt after crushing is heated to being added the rubber powder after crushing after 190 DEG C with 2000~3000r/min
Mixing speed be stirred after obtain the first mixture.
S2：First mixture is sheared into 48min with the shear rate of 4800r/min, and is added in parts by weight
After 2.5 parts of stabilizer, 3 parts of SBS modifier and 1.5 parts of PE modifying agent, with 2500r/min under conditions of 190 DEG C
Speed stirring 35min development after obtain the second mixture；
S3：Second mixture is added after 25 parts of polyphosphoric acids in parts by weight and is stirred with the speed of 550r/min
Third mixture is obtained after mixing 35min；
S4：Third mixture is added after 5 parts of solubilizer in parts by weight and 2 parts of aromatic naphtha 170~
Continue to shear 48min with the shear rate of 4800r/min after being swollen 48min at a temperature of 200 DEG C.
Wherein, step S4 is specifically included：
S41：20min is kept the temperature after being heated to 350 DEG C after first mixture is mixed with solubilizer, then with 4 DEG C/min's
Speed is cooled to 190 DEG C；It is heated to high temperature and is then quickly cooled down the higher modified pitch of available softness number so that is modified
The stability of pitch further increases, and machinability also accordingly increases.
S42：The mixture of the first mixture and solubilizer after being quickly cooled down is added after aromatic naphtha in 190 DEG C of temperature
Continue to shear 48min with the shear rate of 4800r/min after lower swelling 48min.
Embodiment 3
A kind of rubber modified asphalt is present embodiments provided, is mainly prepared by the following method to obtain：
S1：40 parts of rock asphalt in parts by weight is heated to being added in 50 parts of rubber powder after 210 DEG C, and with
The mixing speed of 3000r/min obtains the first mixture after being stirred；
Wherein, step S1 is specifically included：
S11：Rock asphalt and rubber powder are crushed to after 80 mesh for use；
S12：Rock asphalt after crushing is heated to being added the rubber powder after crushing after 210 DEG C with the stirring of 3000r/min
Speed obtains the first mixture after being stirred.
S2：First mixture is sheared into 50min with the shear rate of 5000r/min, and be added in parts by weight 3
Part stabilizer, after 5 parts of SBS modifier and 1~2 part of PE modifying agent, with 3000r/min's under conditions of 200 DEG C
The second mixture is obtained after speed stirring 40min developments；
S3：Second mixture is added after 30 parts of polyphosphoric acids in parts by weight and is stirred with the speed of 600r/min
Third mixture is obtained after mixing 40min；
S4：Third mixture is added after 10 parts of solubilizer and 3 parts of aromatic naphtha in parts by weight at 200 DEG C
At a temperature of be swollen 50min after continue to shear 50min with the shear rate of 5000r/min.
Wherein, step S4 is specifically included：
S41：30min is kept the temperature after being heated to 400 DEG C after first mixture is mixed with solubilizer, then with 4 DEG C/min's
Speed is cooled to 200 DEG C；It is heated to high temperature and is then quickly cooled down the higher modified pitch of available softness number so that is modified
The stability of pitch further increases, and machinability also accordingly increases.
S42：The mixture of the first mixture and solubilizer after being quickly cooled down is added after aromatic naphtha at 170~200 DEG C
At a temperature of be swollen 50min after continue to shear 50min with the shear rate of 5000r/min.
Experimental example 1
Embodiment 1, embodiment 2 and embodiment 3 are prepared according to the test method of Ministry of Communications JT/T 798-2011
Rubber powder modified asphalt be tested for the property, the result such as table 1 of test.
1. the performance test results of table
According to the data of the test of table 1 it is found that the difficulty of construction for the rubber powder modified asphalt that the embodiment of the present invention provides is small,
Needle penetration reduces, and softness number increases, and stability is improved.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of rubber powder modified asphalt, which is characterized in that the rubber powder modified asphalt is mainly by following parts by weight meter
Raw material is made：
30~40 parts of rock asphalt, 20~30 parts of polyphosphoric acids, 10~50 parts of rubber powder, 2~3 parts of stabilizer, 1~5
The SBS modifier of part, 1~2 part of PE modifying agent, 1~10 part of solubilizer, 1~3 part of aromatic naphtha.
2. rubber powder modified asphalt according to claim 1, which is characterized in that the rubber powder modified asphalt mainly by with
The raw material of lower parts by weight meter is made：
35 parts of rock asphalt, 25 parts of polyphosphoric acids, 25 parts of rubber powder, 2.5 parts of stabilizer, 3 parts of SBS modifier, 1.5
The PE modifying agent, 5 parts of solubilizer, 2 parts of aromatic naphtha of part.
3. rubber powder modified asphalt according to claim 1, it is characterised in that：
The rubber powder modified asphalt further includes 1~3 part of exothermic mixture.
4. rubber powder modified asphalt according to claim 1, it is characterised in that：
The solubilizer is that weight ratio is 1:6~10 polyox-yethylene-polyoxypropylene block copolymer forms mixed with sorbierite
Close object.
5. rubber powder modified asphalt according to claim 1, it is characterised in that：
The stabilizer is that weight ratio is 1:The mixture that 2~4 inorganic sulfur is formed with inorganic sulfide compound.
6. a kind of preparation method of rubber powder modified asphalt as described in claim 1, which is characterized in that it includes：
By the rock asphalt be heated to being added after 170~210 DEG C the rubber powder with the mixing speed of 2000~3000r/min into
The first mixture is obtained after row stirring；
First mixture is sheared into 45~50min with the shear rate of 4500~5000r/min, and the stabilization is added
After agent, the SBS modifier and the PE modifying agent, the second mixing is obtained after stirring development under conditions of 170~200 DEG C
Object；
Second mixture is added after the polyphosphoric acids after the speed with 500~600r/min stirs 30~40min and is obtained
To third mixture；
Will the third mixture be added the solubilizer with after the aromatic naphtha at a temperature of 170~200 DEG C swelling 40~
Continue to shear 45~50min with the shear rate of 4500~5000r/min after 50min.
7. the preparation method of rubber powder modified asphalt according to claim 6, which is characterized in that heat the rock asphalt
It is added after the rubber powder is stirred with the mixing speed of 2000~3000r/min after to 170~210 DEG C and obtains described first
Mixture specifically includes：
The rock asphalt and the rubber powder are crushed to after 30~80 mesh for use；
By the rock asphalt after crushing be heated to being added after 170~210 DEG C the rubber powder after crushing with 2000~
The mixing speed of 3000r/min obtains first mixture after being stirred.
8. the preparation method of rubber powder modified asphalt according to claim 6, it is characterised in that：
The mixing speed of stirring development is 2000~3000r/min, and mixing time is 40~50min.
9. the preparation method of rubber powder modified asphalt according to claim 6, which is characterized in that by second mixture
It is added after the polyphosphoric acids after the speed with 500~600r/min stirs 30~40min and obtains the third mixture, specifically
Including：
Second mixture is heated to the speed after the polyphosphoric acids with 500~600r/min is added after 250~270 DEG C
The third mixture is obtained after 30~40min of stirring and is cooled to 170~200 DEG C with the speed of 4 DEG C/min.
10. the preparation method of rubber powder modified asphalt according to claim 6, which is characterized in that mix the third
Object be added the solubilizer be swollen at a temperature of 170~200 DEG C after the aromatic naphtha after 40~50min continue with 4500~
The shear rate of 5000r/min shears 45~50min, specifically includes：
15~30min is kept the temperature after being heated to 300~400 DEG C after first mixture is mixed with the solubilizer, then with 4
DEG C/speed of min is cooled to 170~200 DEG C；
The mixture of first mixture after being quickly cooled down and the solubilizer is added after the aromatic naphtha 170~
Continue to shear 45~50min with the shear rate of 4500~5000r/min after being swollen 40~50min at a temperature of 200 DEG C.
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| CN109694585A (en) * | 2018-12-27 | 2019-04-30 | 内蒙古农业大学 | A kind of high viscosity composite modified asphalt and preparation method thereof |
| CN110003674A (en) * | 2019-04-29 | 2019-07-12 | 甘肃建投隧道工程有限公司 | A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt |
| CN110256745A (en) * | 2019-07-11 | 2019-09-20 | 长安大学 | A kind of modified pitch composite particles and preparation method thereof based on waste rubber powder |
| CN110484010A (en) * | 2019-09-12 | 2019-11-22 | 吉林省交通规划设计院 | A kind of road bio-rubber modified pitch and preparation method thereof |
| CN110922775A (en) * | 2019-12-12 | 2020-03-27 | 浙江省交通集团检测科技有限公司 | Buton rock asphalt modifier based on environment-friendly rubber powder and preparation method and application thereof |
| CN111393863A (en) * | 2020-04-14 | 2020-07-10 | 四川路友交通物资发展有限公司 | Rubber powder modified asphalt and preparation method thereof |
| CN111849180A (en) * | 2020-07-10 | 2020-10-30 | 广西路冠科技投资发展有限责任公司 | Compound rock modified asphalt mixture additive |
| CN112280321A (en) * | 2020-10-29 | 2021-01-29 | 怀化市华恒莫来石有限公司 | Asphalt and preparation method thereof |
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| CN109694585A (en) * | 2018-12-27 | 2019-04-30 | 内蒙古农业大学 | A kind of high viscosity composite modified asphalt and preparation method thereof |
| CN110003674A (en) * | 2019-04-29 | 2019-07-12 | 甘肃建投隧道工程有限公司 | A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt |
| CN110256745A (en) * | 2019-07-11 | 2019-09-20 | 长安大学 | A kind of modified pitch composite particles and preparation method thereof based on waste rubber powder |
| CN110484010A (en) * | 2019-09-12 | 2019-11-22 | 吉林省交通规划设计院 | A kind of road bio-rubber modified pitch and preparation method thereof |
| CN110922775A (en) * | 2019-12-12 | 2020-03-27 | 浙江省交通集团检测科技有限公司 | Buton rock asphalt modifier based on environment-friendly rubber powder and preparation method and application thereof |
| CN111393863A (en) * | 2020-04-14 | 2020-07-10 | 四川路友交通物资发展有限公司 | Rubber powder modified asphalt and preparation method thereof |
| CN111393863B (en) * | 2020-04-14 | 2022-02-18 | 四川路友交通物资发展有限公司 | Rubber powder modified asphalt and preparation method thereof |
| CN111849180A (en) * | 2020-07-10 | 2020-10-30 | 广西路冠科技投资发展有限责任公司 | Compound rock modified asphalt mixture additive |
| CN112280321A (en) * | 2020-10-29 | 2021-01-29 | 怀化市华恒莫来石有限公司 | Asphalt and preparation method thereof |
| CN115678294A (en) * | 2021-07-27 | 2023-02-03 | 中国石油化工股份有限公司 | Anti-stripping agent and preparation method and application thereof |
| CN115678294B (en) * | 2021-07-27 | 2023-09-01 | 中国石油化工股份有限公司 | Anti-stripping agent and preparation method and application thereof |
| CN114015246A (en) * | 2021-10-25 | 2022-02-08 | 河北交规院瑞志交通技术咨询有限公司 | Modified asphalt composite particle and preparation thereof, modified asphalt and application thereof |
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Application publication date: 20180911 |