CN109627667A - A kind of SBS asphalt modifier, preparation method and application - Google Patents
A kind of SBS asphalt modifier, preparation method and application Download PDFInfo
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- CN109627667A CN109627667A CN201811358133.0A CN201811358133A CN109627667A CN 109627667 A CN109627667 A CN 109627667A CN 201811358133 A CN201811358133 A CN 201811358133A CN 109627667 A CN109627667 A CN 109627667A
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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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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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to a kind of SBS asphalt modifiers, preparation method and application, in parts by mass, the SBS asphalt modifier includes SBS10-15 parts, base 50-60 parts and 1-3 parts of stabilizer of dispersion, and the dispersion base is made of oleic acid and stearic acid by the mass ratio of 1:0.5-0.7.SBS asphalt modifier can be used direct putting type and improve to pitch, be not necessarily to be equipped with the modification that the professional equipments such as colloid mill are also able to achieve pitch at asphalt mixing plant scene, play a significant role for reducing the build a station popularization and use of cost, SBS pitch of asphalt mixing plant；The present invention is by the way of first shearing dispersion for SBS, then the mode being modified, and avoids the problem of being unable to long-time storage after traditional SBS modified pitch prepares, i.e., by the way of direct putting type, instant throwing.
Description
Technical field
The present invention relates to a kind of SBS asphalt modifiers, preparation method and application.
Background technique
SBS belongs to styrene analog thermoplastic elastomer, is styrene-butadiene-styrene triblock copolymer.SBS
As current the most widely used asphalt modifier, its use can significantly improve the high-temperature stability of asphalt pavement material,
The pavement performances such as low-temperature cracking-resistance.Although SBS asphalt modifier has the above remarkable advantage, high, storage that there is also preparation conditions
The problems such as depositing unstable (easy layering, cohesion or isolation), mix constructional difficulties, wherein again unstable with preparation condition height, storage
It is the most prominent.
SBS is a kind of thermoplastic elastomer (TPE), needs just to be able to achieve the modification of matrix pitch by task equipments such as colloid mills；
Further, since SBS and matrix pitch consistency problem, SBS modified pitch is made, and there is also deficiencies in storage stability.How
Reducing SBS modified pitch production difficulty and improving the stability of SBS matrix pitch is field difficult point urgently to be resolved.
Patent CN201810039209.7 discloses a kind of SBS modified pitch cosolvent and preparation method thereof, by SBS
The compatibility of improvement pitch and SBS that appropriate fraction is added in modified pitch preparation process improves its storage stability, but SBS
The preparation requirement of modified pitch is still higher, and fraction volume is only 2.3%, and the raising of compatibility is also than relatively limited.Similarly,
Patent CN201610214874.6 discloses a kind of SBS stabilizer, is to be added after SBS modified pitch prepares to improve it
Stability, and the requirement for preparation does not reduce yet.
When the prior art produces SBS modified pitch, SBS modifier used is often only the percent of matrix pitch total amount
Several, low dose of SBS modifier needs to be dispersed in the pitch of large dosage, and there are asking for dispersing uniformity and stability
Topic.The method that the prior art improves SBS modified pitch stability is mainly carried out when SBS is modified or later, is guaranteeing SBS
When stability, stablize compatible problem between the low dose of SBS modifier that needs to face and large dosage of matrix pitch, and SBS with
The requirement that matrix pitch is directly modified to asphalt mixing station equipment is also higher.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of direct putting type SBS asphalt modifier, preparation method and application,
To improve SBS modified pitch stability and reduce the preparation requirement of SBS modified pitch.
In order to solve the above-mentioned technical problem, technical scheme is as follows:
A kind of SBS asphalt modifier, in parts by mass, including SBS10-15 parts, base 50-60 parts and stabilizer 1-3 of dispersion
Part, the dispersion base is made of oleic acid and stearic acid by the mass ratio of 1:0.5-0.7.
Further, in parts by mass, including SBS12-14 parts, dispersion base 52-58 parts and 1.5-2.5 parts of stabilizer.
Including SBS12 parts, dispersion 55 parts of base and 2 parts of stabilizer further, in parts by mass,.
Further, the dispersion base is made of oleic acid and stearic acid by the mass ratio of 1:0.55-0.65.
Further, the stabilizer includes at least one of activated calcium carbonate, sucrose-fatty, metatitanic acid.
The preparation method of SBS asphalt modifier as described above, includes the following steps:
S1, oleic acid is heated to 80-100 DEG C, at least 5min is stirred with the speed of 30-50r/min, is then added according to the ratio
Stearic acid continues to stir 3-5min, and is heated to 120-140 DEG C, obtains dispersion base, spare；
S2, it is cut according to proportion by the dispersion base obtained in SBS addition S1 with the speed of 2000r/min-3000r/min
30-40min is cut, mixture is obtained；
S3, according to proportion, with the mixture obtained in the speed stirring S2 of 20-30r/min, while stabilizer is added, with
It after persistently stirring 3-5min afterwards, is cooled to room temperature, obtains SBS asphalt modifier.
Further, it in S2, is sheared by high speed shear instrument or shearing colloid mill.
Further, in S3, the type of cooling is natural cooling.
SBS asphalt modifier as described above or the SBS asphalt modifier of preparation method as described above preparation are dripped in matrix
Application during blueness is modified.
Further, in application, the SBS asphalt modifier is direct plungeed into the tank for being loaded with heated bitumen, stirring is equal
It is even, 8h or more is kept, SBS modifier is enabled to act on matrix pitch, completes asphalt modification.
SBS asphalt modifier of the invention is direct putting type modifying agent, when being modified operation, directly by the SBS asphalt modifier
It puts into heated bitumen, stirring, development can effectively reduce the production requirement of SBS modified pitch, and improve stability.
Unlike the mode of traditional SBS modified pitch, the present invention forms stabilization and changes by the way of first shearing dispersion
Property agent；In pitch before use, the scattered SBS asphalt modifier of shearing is direct plungeed into, when producing using hot-mix asphalt mixture
Pitch needs the characteristics of heating in advance, carries out the modified development of SBS, achievees the purpose that modified；
Using oleic acid, hard fatty acids as dispersion base, wherein stearic acid is white waxy solid, oleic acid under normal temperature state
For weak yellow liquid, preparation method of the invention at a temperature of, stearic acid is can be uniformly dispersed in oleic acid, is added at this time
SBS is acted on using high rotating speed cutting, and SBS is can be uniformly dispersed in dispersion base, forms the modifying agent-point of SBS- stearic-oleic
Powder.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) SBS asphalt modifier can be used direct putting type and improve to pitch, at asphalt mixing plant scene without being equipped with glue
The modification of pitch can be realized in the professional equipments such as body mill, builds a station the popularization and use of cost, SBS pitch for reducing asphalt mixing plant
Play a significant role；
(2) present invention is by the way of first shearing dispersion for SBS, then the mode being modified, and it is modified to avoid traditional SBS
The problem of pitch is unable to long-time storage after preparing, i.e., by the way of direct putting type, instant throwing, and SBS asphalt modifier
With matrix pitch can long-time stable it is compatible.
Specific embodiment
It is next with reference to embodiments that the present invention will be described in detail.It should be noted that in the absence of conflict, in the present invention
Embodiment and embodiment in feature can be combined with each other.
Embodiment 1
In the present embodiment, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 30 parts of oleic acid, stearic acid are weighed by weight
20 parts；Wherein, stabilizer is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, stirs 10min under the speed of 40r/min, the stearic acid of above-mentioned parts by weight is added
Continue to stir 5min, and be heated to 140 DEG C, obtains dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier A finished product, spare.
It is the above-mentioned SBS asphalt modifier A of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch A.
Embodiment 2
In the present embodiment, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 33 parts of oleic acid, stearic acid are weighed by weight
17 parts；Wherein, stabilizer is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, stirs 10min under the speed of 40r/min, the stearic acid of above-mentioned parts by weight is added
Continue to stir 5min, and be heated to 140 DEG C, obtains dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier B finished product, spare.
It is the above-mentioned SBS asphalt modifier B of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch B.
Embodiment 3
In the present embodiment, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 2 parts of oleic acid, stearic acid 18 are weighed by weight
Part；Wherein, stabilizer is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, stirs 10min under the speed of 40r/min, the stearic acid of above-mentioned parts by weight is added
Continue to stir 5min, and be heated to 140 DEG C, obtains dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier C finished product, spare.
It is the above-mentioned SBS asphalt modifier C of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch C.
Comparative example 1
In this comparative example, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, oleic acid 50 are weighed by weight；Wherein, stablize
Agent is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, 10min is stirred under the speed of 40r/min, obtain dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier D finished product, spare.
It is the above-mentioned SBS asphalt modifier D of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch D.
Comparative example 2
In this comparative example, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 50 parts of stearic acid are weighed by weight；Wherein,
Stabilizer is made of sucrose-fatty, metatitanic acid；
2) stearic acid is heated to 100 DEG C, 10min is stirred under the speed of 40r/min, obtain dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier E finished product, spare.
It is the above-mentioned SBS asphalt modifier E of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch E.
Comparative example 3
In this comparative example, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 25 parts of oleic acid, stearic acid are weighed by weight
25 parts；Wherein, stabilizer is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, 10min is stirred under the speed of 40r/min, obtain dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier F finished product, spare.
It is the above-mentioned SBS asphalt modifier F of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch F.
Comparative example 4
In this comparative example, SBS asphalt modifier the preparation method is as follows:
1) following parts by weight and material composition: SBS15 parts, 2 parts of stabilizer, 20 parts of oleic acid, stearic acid are weighed by weight
30 parts；Wherein, stabilizer is made of sucrose-fatty, metatitanic acid；
2) oleic acid is heated to 100 DEG C, 10min is stirred under the speed of 40r/min, obtain dispersion base, it is spare；
3) SBS is added in the above-mentioned dispersion base prepared, shears 40min using high speed shear instrument, shear velocity is
3000r/min；
4) mixture after the completion of high speed shear is changed to stir in the case where revolving speed is the revolving speed of 20r/min, above-mentioned weight is added
Part stabilizer, is stirred 5 minutes, after naturally cooling to room temperature, obtains SBS asphalt modifier G finished product, spare.
It is the above-mentioned SBS asphalt modifier G of matrix pitch weight 8% to be modified by dosage, direct plunges into heated bitumen filling,
It is mixed with corresponding matrix pitch, speed is used to stir evenly for the speed of 20r/min, development time 8h, i.e. completion SBS changes
Property, obtain SBS modified pitch F.
Matrix pitch and the corresponding SBS modified pitch three norms test result of process and comparison are as shown in the table:
1 dependence test result situation table of table
Through the foregoing embodiment and comparative example using SBS, oleic acid, stearic acid, combination of stabilizers and use it is found that invented
Formula formed SBS asphalt modifier be used for asphalt modification, can get good modified effect.Firstly, by oleic acid and tristearin
The dispersion base of acid composition can form SBS and be wrapped in stearic acid, in stearic acid suspended matter oleic acid after SBS shearing dispersion.
And stearic acid is oleic acid hydrogenated products, physical property is closer to, and is aided with the effect of stabilizer, the stability in later period obtains
Guarantee；And oleic acid or stearic acid is used alone as dispersion base, since the stability after the dispersibility and dispersion of SBS can not protect
Card, therefore the SBS asphalt modifier obtained can not obtain good modified effect.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalent forms of the invention
Modification each fall within the application range as defined in the appended claims.
Claims (9)
1. a kind of SBS asphalt modifier, which is characterized in that in parts by mass, including SBS10-15 parts, dispersion base 50-60 parts and
1-3 parts of stabilizer, the dispersion base is made of oleic acid and stearic acid by the mass ratio of 1:0.5-0.7.
2. SBS asphalt modifier according to claim 1, which is characterized in that in parts by mass, including SBS12-14 parts,
Base 52-58 parts and stabilizer 1.5-2.5 parts of dispersion.
3. SBS asphalt modifier according to claim 1, which is characterized in that in parts by mass, including SBS12 parts, dispersion
55 parts and 2 parts of stabilizer of base.
4. SBS asphalt modifier according to claim 1, which is characterized in that the dispersion base is pressed by oleic acid and stearic acid
1:0.55-0.65 mass ratio composition.
5. SBS asphalt modifier according to claim 1, which is characterized in that the stabilizer includes activated calcium carbonate, sugarcane
At least one of sugar fatty acid, metatitanic acid.
6. the preparation method of SBS asphalt modifier as described in any one in claim 1-5, which is characterized in that including walking as follows
It is rapid:
S1, oleic acid is heated to 80-100 DEG C, at least 5min is stirred with the speed of 30-50r/min, be then added according to the ratio stearic
Acid continues to stir 3-5min, and is heated to 120-140 DEG C, obtains dispersion base, spare；
S2, it is sheared according to proportion by the dispersion base obtained in SBS addition S1 with the speed of 2000r/min-3000r/min
30-40min obtains mixture；
S3, according to proportion, with the mixture obtained in the speed stirring S2 of 20-30r/min, while stabilizer is added, then holds
After continuous stirring 3-5min, it is cooled to room temperature, obtains SBS asphalt modifier.
7. preparation method according to claim 6, which is characterized in that in S2, pass through high speed shear instrument or shearing colloid mill
It is sheared.
8. preparation method according to claim 6, which is characterized in that in S3, the type of cooling is natural cooling.
9. SBS asphalt modifier or the described in any item preparation method systems of claim 6-8 as described in claim any one of 1-5
Application of the standby SBS asphalt modifier in matrix pitch is modified.
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| CN201811358133.0A CN109627667A (en) | 2018-11-15 | 2018-11-15 | A kind of SBS asphalt modifier, preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713683A (en) * | 2019-09-29 | 2020-01-21 | 四川科路泰交通科技有限公司 | Direct-vat-set SBS modified asphalt modifier and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642933A (en) * | 2009-08-31 | 2010-02-10 | 中铁四局集团有限公司 | Method for preparing emulsified asphalt slurry |
| WO2016143888A1 (en) * | 2015-03-11 | 2016-09-15 | 大有建設株式会社 | Asphalt -modifying material, and process for producing asphalt mixture using same |
| CN105968837A (en) * | 2016-06-30 | 2016-09-28 | 青岛千帆高新技术有限公司 | Stable modified asphalt |
-
2018
- 2018-11-15 CN CN201811358133.0A patent/CN109627667A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642933A (en) * | 2009-08-31 | 2010-02-10 | 中铁四局集团有限公司 | Method for preparing emulsified asphalt slurry |
| WO2016143888A1 (en) * | 2015-03-11 | 2016-09-15 | 大有建設株式会社 | Asphalt -modifying material, and process for producing asphalt mixture using same |
| CN105968837A (en) * | 2016-06-30 | 2016-09-28 | 青岛千帆高新技术有限公司 | Stable modified asphalt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713683A (en) * | 2019-09-29 | 2020-01-21 | 四川科路泰交通科技有限公司 | Direct-vat-set SBS modified asphalt modifier and preparation method thereof |
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Application publication date: 20190416 |