CN107739518A - A kind of cast asphalt concrete modified pitch and preparation method thereof - Google Patents
A kind of cast asphalt concrete modified pitch and preparation method thereof Download PDFInfo
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- CN107739518A CN107739518A CN201711005561.0A CN201711005561A CN107739518A CN 107739518 A CN107739518 A CN 107739518A CN 201711005561 A CN201711005561 A CN 201711005561A CN 107739518 A CN107739518 A CN 107739518A
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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
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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 cast asphalt concrete modified pitch and preparation method thereof, the modified pitch includes matrix pitch, modifying agent adhesion promoters, furfural extract oil, stabilizer.The cast asphalt concrete modified pitch that the application provides, both there is higher softening point and hardness, excellent elasticity recovery and heat aging performance, while hot storage stability is also fine.High-performance high-viscosity asphalt provided by the invention can improve the high-temperature behavior of cast-type modified asphalt concrete, make have intensity and stiffness modulus big under its condition of high temperature, it is strong to improve rutting resistance, improves whole pavement structure stress, extends cast asphalt concrete service life of road surface.
Description
Technical field
It is high viscous with high-performance more particularly to a kind of cast asphalt concrete the present invention relates to pitch preparing technical field
Spend modified pitch and preparation method thereof.
Background technology
Cast asphalt concrete be at high operating temperatures (about 220 DEG C~260 DEG C) progress mix, by the flowing of itself
Property paves shaping, without a kind of high bitumen content and the special asphalt mixture of high miberal powder content rolled.This material is basic
Upper tight, waterproof, erosion resisting is good, and freeze-thawing resistant circulation ability is strong, is a kind of asphalt mixture the most durable；Wearability
It is excellent；Deformability is strong, is not likely to produce crackle during low temperature；It need not roll, can be constructed at low ambient temperatures during construction.Cause
This this material the field such as mats formation using quite varied in express highway pavement, Large Span Bridges deck paving, tunnel.
The performance of cast asphalt concrete depends on the characteristic of modified pitch used, directly as obtained by oil plant
Traditional asphalt property can not meet the needs of cast asphalt concrete, so appropriate modification is carried out to pitch, although mesh
The species of the modified pitch of preceding in the market is various, is but dripped without a polymer modification special for cast asphalt concrete
It is blue or green.
The content of the invention
In order to fill up the blank in terms of domestic casting type asphaltic mixture special asphalt formula, modified pitch species is enriched,
A kind of preparation method the invention provides cast asphalt concrete with high-performance high-viscosity modified asphalt.
The invention provides following scheme：
A kind of cast asphalt concrete modified pitch, including：
Preferably：The matrix pitch, needle penetration：60-80 (0.1mm), softening point：40-55 DEG C, 15 DEG C of ductilities >=
40cm。
Preferably：The modifying agent is SBS, butadiene-styrene rubber, styrene-different
One or more of mixtures in isoprene-styrene block copolymer, polyolefin polymer.
Preferably：The adhesion promoters are one or more of mixtures in Petropols.
Preferably：The furfural extract oil is one or more of mixtures in the distillate that heavy distillate obtains.
Preferably：The stabilizer is crosslinking agent.
Preferably：The crosslinking agent is the one or more in sulphur, sulfur-containing compound, peroxide, metal oxide
Mixture.
A kind of preparation method of modified pitch, methods described include：
A reactor) is taken, the temperature that 70-93 parts by weight are added into the reactor is 140-190 DEG C of matrix pitch,
The modifying agent of 2-14 parts by weight is added in the reactor, in 1000-5000 revs/min of lower high shear 20-90 minute；
B) after the modifying agent is fully swelled, then the furfural extract oil addition reactor by 0.5-10 parts by weight
In, continue to shear 5-30 minutes under 1000-5000 revs/min；
C) stabilizer of 0.05-0.3 parts by weight is added in the reactor, 1000-5000 revs/min of shearing 30 of rotating speed
Minute, the adhesion promoters of 4-10 parts by weight are added into the reactor, continues shearing and produces the modified pitch in 60 minutes.
Preferably：The step A) be specially：The temperature that 85.85 parts by weight are added into the reactor is 180-190
DEG C matrix pitch, the modifying agent of 6 parts by weight is added in the reactor, in 2500 revs/min of lower high shears 60 minutes；
The step B) be specially：Institute is added after the modifying agent is fully swelled, then by the furfural extract oil of 4 parts by weight
State in reactor, continue shearing 15 minutes under 2500 revs/min；
The step C) be specially：When the matrix pitch temperature in the reactor is 170-180 DEG C, by 0.15
The stabilizer of parts by weight is added in the reactor, and 2500 revs/min of rotating speed is sheared 30 minutes, and 4 are added into the reactor
The adhesion promoters of parts by weight, continue shearing and produce the modified pitch in 60 minutes.
Preferably：The step A) be specially：The temperature that 77.75 parts by weight are added into the reactor is 180-190
DEG C matrix pitch, the modifying agent of 10 parts by weight is added in the reactor, in 3500 revs/min of lower high shears 60 minutes；
The step B) be specially：Institute is added after the modifying agent is fully swelled, then by the furfural extract oil of 7 parts by weight
State in reactor, continue shearing 25 minutes under 3500 revs/min；
The step C) be specially：When the matrix pitch temperature in the reactor is 170-180 DEG C, by 0.25
The stabilizer of parts by weight is added in the reactor, and 2500 revs/min of rotating speed is sheared 30 minutes, and 5 are added into the reactor
The adhesion promoters of parts by weight, continue shearing and produce the modified pitch in 60 minutes.
According to specific embodiment provided by the invention, the invention discloses following technique effect：
By the invention it is possible to a kind of cast asphalt concrete modified pitch and preparation method thereof is realized, in one kind
Under implementation, the modified pitch includes matrix pitch, modifying agent adhesion promoters, furfural extract oil, stabilizer.The application carries
For cast asphalt concrete modified pitch, both there is higher softening point and hardness, excellent elasticity recovers and heat was old
Change performance, while hot storage stability is also fine.High-performance high-viscosity asphalt provided by the invention can improve cast-type and be modified drip
The high-temperature behavior of blue or green concrete, make have intensity and stiffness modulus big under its condition of high temperature, raising rutting resistance is strong, improves whole
Individual pavement structure stress, extend cast asphalt concrete service life of road surface.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained, belongs to the scope of protection of the invention.
The invention provides a kind of cast asphalt concrete modified pitch, including：
The present invention is not particularly limited to the source of all raw materials, is commercially available.
The modified pitch has relatively low construction at high temperature viscosity, disclosure satisfy that while suitable 60 DEG C of viscosity is kept
Mixture performance and pavement construction requirement.High-temperature storage stability is good, disclosure satisfy that the demand of modified pitch industrialized production.It is blue or green
Material is applicable not only to cast asphalt concrete, it may also be used for stress absorbing layer and water-proof tack coat in concrete pavement rebuilding
Deng field.
Wherein, the matrix pitch content is preferably 75-86 parts by weight, more preferably 78-83 parts by weight, further preferably for
79-81 parts by weight.Matrix pitch provided by the invention can select the stone that the auspicious crude oil of South America agate and Persian bank crude oil mixing produce
Oil asphalt is as matrix pitch (South America heavy petroleum asphalt).The matrix pitch, needle penetration：60-80 (0.1mm), softening point：40-
55 DEG C, 15 DEG C of ductility >=40cm.
The content of the modifying agent is preferably 3-12 parts by weight, more preferably 5-10 parts by weight, is further preferably 6-8 weight
Part.Modifying agent is the natural or artificial synthesized organic or inorganic material added in pitch or asphalt, it is fusible or
It is dispersed in pitch to improve or improve the pavement performance of pitch.Such as in order to improve the mechanical performance of pitch (intensity and toughness
Deng), just adding polymer, resin, plastics, carbon black, inorganic salts etc. increases the material of intensity and toughness.In the specifically chosen modification
During agent, currently preferred is that the modifying agent is SBS (SBS), butadiene-styrene rubber
(SBR), one or more of mixing in SIS (SIS), polyolefin polymer
Thing.
The content of the adhesion promoters is preferably 4-8 parts by weight, more preferably 5-7 parts by weight, is further preferably 5-6 weight
Part.Adhesion promoters provided by the invention can be one or more of mixtures in Petropols.Petropols
(hydrocarbon resin) is C5, C9 fraction of petroleum cracking institute by-product, through technique productions such as pre-treatment, polymerization, distillations
A kind of thermoplastic resin, it is not high polymer, but molecular weight is between 300-3000 oligomer.Petropols are new in recent years
A kind of chemical products of exploitation, because it has, cheap, compatibility is good, fusing point is low, water-fast, resistance to ethanol and chemicals etc. are excellent
Point, it can be widely used for a variety of industries such as rubber, adhesive, coating, papermaking, ink and field.Petropols have viscous well
Connecing property, added in adhesive and pressure sensitive adhesive tape Petropols can improve the bonding force of adhesive, acid resistance, alkali resistance and
Water resistance, and production cost can be effectively reduced.Petropols add the main C5 oil for using low softening point in pitch
Resin, C5/C9 copolymer resinses and DCPD resins.This resinoid and natural rubber micelle have good intersolubility, to bitumen vulcanising
Process does not have big influence, and thickening, reinforcement, softening can be played a part of by adding Petropols in pitch.Particularly C5/C9 is copolymerized
It the addition of resin, can not only increase the bonding force between micelle, and the bonding force between micelle and cord fabric thread can be improved.
The content of the furfural extract oil is preferably 0.5-8 parts by weight, more preferably 2-7 parts by weight, is further preferably 4-6 weights
Measure part.The furfural extract oil is one or more of mixtures in the distillate that heavy distillate obtains.Heavy distillate, typically
Refer to the distillate from Vacuum Tower In Refinery lateral line withdrawal function.Also known as heavy distillat, double distilled are fuel-displaced.Refer to the higher cut of oil boiling point.Chaff
It is a kind of more satisfactory asphalt modifier containing substantial amounts of fragrance point and colloid in aldehyde tapped oil.
The content of the stabilizer is preferably 0.05-0.25 parts by weight, more preferably 0.10-0.2 parts by weight, further preferably for
0.15-0.18 parts by weight.Preferably stabilizer of the invention is crosslinking agent.Preferred crosslinking agent is sulphur, sulfur-containing compound, mistake
One or more of mixtures in oxide, metal oxide.According to mechanism of crosslinking of the crosslinking agent in pitch, and as
Basis carries out cross-linking reaction to pitch under catalyst action.As a result show, crosslinked action of the crosslinking agent in pitch matrix is non-
Chang Mingxian, not only matrix Residual carbon in itself and temperature capability improve a lot, moreover, the resistance to compression with modified pitch made of it
Intensity also dramatically increases.
Present invention also offers a kind of preparation method of above-mentioned modified pitch, including A) reactor is taken, to the reactor
The temperature of interior addition 70-93 parts by weight is 140-190 DEG C of matrix pitch, and the modifying agent of 2-14 parts by weight is added into the reaction
In kettle, in 1000-5000 revs/min of lower high shear 20-90 minute；
B) after the modifying agent is fully swelled, then the furfural extract oil addition reactor by 0.5-10 parts by weight
In, continue to shear 5-30 minutes under 1000-5000 revs/min；
C) stabilizer of 0.05-0.3 parts by weight is added in the reactor, 1000-5000 revs/min of shearing 30 of rotating speed
Minute, the adhesion promoters of 4-10 parts by weight are added into the reactor, continues shearing and produces the modified pitch in 60 minutes.
Wherein, the matrix pitch, modifying agent, adhesion promoters, furfural extract oil and stabilizer are same as above,
This is repeated no more.
In order to further illustrate the present invention, with reference to embodiments to a kind of cast asphalt concrete provided by the invention
It is described in detail with modified pitch and preparation method thereof.
Reagent used is commercially available in following examples, and matrix pitch is mixed from the auspicious crude oil of South America agate and Persian bank crude oil
The asphalt of production is refined as matrix pitch (South America heavy petroleum asphalt).The matrix pitch, needle penetration：60-80(0.1mm)、
Softening point：40-55 DEG C, 15 DEG C of ductility >=40cm.
Embodiment 1
The temperature that 85.85 parts by weight are added into the reactor is 180-190 DEG C of matrix pitch, by 6 parts by weight
Modifying agent was added in the reactor, in 2500 revs/min of lower high shears 60 minutes；
Added after the modifying agent is fully swelled, then by the furfural extract oil of 4 parts by weight in the reactor, 2500
Continue shearing 15 minutes under rev/min；
When the matrix pitch temperature in the reactor is 170-180 DEG C, the stabilizer of 0.15 parts by weight is added
Enter in the reactor, 2500 revs/min of rotating speed is sheared 30 minutes, and the viscosity that 4 parts by weight are added into the reactor promotes
Agent, continue shearing and produce the modified pitch in 60 minutes.
Performance test is carried out to the modified pitch obtained in embodiment 1, obtains the results are shown in Table 1.
Table 1
Embodiment 2
The temperature that 77.75 parts by weight are added into the reactor is 180-190 DEG C of matrix pitch, by 10 parts by weight
Modifying agent was added in the reactor, in 3500 revs/min of lower high shears 60 minutes；
Added after the modifying agent is fully swelled, then by the furfural extract oil of 7 parts by weight in the reactor, 3500
Continue shearing 25 minutes under rev/min；
When the matrix pitch temperature in the reactor is 170-180 DEG C, the stabilizer of 0.25 parts by weight is added
Enter in the reactor, 2500 revs/min of rotating speed is sheared 30 minutes, and the viscosity that 5 parts by weight are added into the reactor promotes
Agent, continue shearing and produce the modified pitch in 60 minutes.
Performance test is carried out to the modified pitch obtained in embodiment 2, obtains the results are shown in Table 2.
Table 2
The cast asphalt concrete modified pitch of the application offer is provided from embodiment 1, the result of embodiment 2,
Both there is higher softening point and hardness, excellent elasticity recovery and heat aging performance, while hot storage stability is also fine, because
This illustrates that high-performance high-viscosity asphalt provided by the invention can improve the high-temperature behavior of cast-type modified asphalt concrete, makes it high
Big with intensity and stiffness modulus under temperature state, raising rutting resistance is strong, improves whole pavement structure stress, extension is poured
Note formula asphalt concrete pavement service life.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or equipment institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including institute
State in process, method, article or the equipment of key element and other identical element also be present.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
- A kind of 1. cast asphalt concrete modified pitch, it is characterised in that including：
- 2. modified pitch according to claim 1, it is characterised in that the matrix pitch, needle penetration：60-80 (0.1mm), softening point：40-55 DEG C, 15 DEG C of ductility >=40cm.
- 3. modified pitch according to claim 1, it is characterised in that the modifying agent is s-B-S One kind or several in block copolymer, butadiene-styrene rubber, SIS, polyolefin polymer The mixture of kind.
- 4. modified pitch according to claim 1, it is characterised in that the adhesion promoters are one kind in Petropols Or several mixture.
- 5. modified pitch according to claim 1, it is characterised in that the furfural extract oil is evaporating for heavy distillate acquisition The one or more of mixtures divided in oil.
- 6. modified pitch according to claim 1, it is characterised in that the stabilizer is crosslinking agent.
- 7. modified pitch according to claim 6, it is characterised in that the crosslinking agent is sulphur, sulfur-containing compound, peroxide One or more of mixtures in compound, metal oxide.
- 8. a kind of preparation method of modified pitch, it is characterised in that methods described includes：A reactor) is taken, the temperature that 70-93 parts by weight are added into the reactor is 140-190 DEG C of matrix pitch, by 2- The modifying agent of 14 parts by weight is added in the reactor, in 1000-5000 revs/min of lower high shear 20-90 minute；B) after the modifying agent is fully swelled, then the furfural extract oils of 0.5-10 parts by weight added in the reactor, Continue to shear 5-30 minutes under 1000-5000 revs/min；C) stabilizer of 0.05-0.3 parts by weight is added in the reactor, 1000-5000 revs/min of rotating speed shears 30 points Clock, the adhesion promoters of 4-10 parts by weight are added into the reactor, continue shearing and produce the modified pitch in 60 minutes.
- 9. it is specially according to the method for claim 8, it is characterised in that the step A)：Added into the reactor The temperature of 85.85 parts by weight is 180-190 DEG C of matrix pitch, and the modifying agent of 6 parts by weight is added in the reactor, 2500 revs/min of lower high shears 60 minutes；The step B) be specially：It is described anti-after the modifying agent is fully swelled, then by the furfural extract oil addition of 4 parts by weight Answer in kettle, continue shearing 15 minutes under 2500 revs/min；The step C) be specially：When the matrix pitch temperature in the reactor is 170-180 DEG C, by 0.15 weight The stabilizer of part is added in the reactor, and 2500 revs/min of rotating speed is sheared 30 minutes, and 4 weight are added into the reactor The adhesion promoters of part, continue shearing and produce the modified pitch in 60 minutes.
- 10. it is specially according to the method for claim 9, it is characterised in that the step A)：Added into the reactor The temperature of 77.75 parts by weight is 180-190 DEG C of matrix pitch, and the modifying agent of 10 parts by weight is added in the reactor, 3500 revs/min of lower high shears 60 minutes；The step B) be specially：It is described anti-after the modifying agent is fully swelled, then by the furfural extract oil addition of 7 parts by weight Answer in kettle, continue shearing 25 minutes under 3500 revs/min；The step C) be specially：When the matrix pitch temperature in the reactor is 170-180 DEG C, by 0.25 weight The stabilizer of part is added in the reactor, and 2500 revs/min of rotating speed is sheared 30 minutes, and 5 weight are added into the reactor The adhesion promoters of part, continue shearing and produce the modified pitch in 60 minutes.
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| CN201711005561.0A CN107739518A (en) | 2017-10-25 | 2017-10-25 | A kind of cast asphalt concrete modified pitch and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109370242A (en) * | 2018-11-06 | 2019-02-22 | 湖南交通职业技术学院 | A kind of modified asphalt composite and preparation method thereof |
| CN110872447A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | High-viscosity asphalt material for purifying automobile exhaust and preparation method thereof |
| CN111334057A (en) * | 2020-03-31 | 2020-06-26 | 大连市政设施修建有限公司 | Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof |
| CN111484746A (en) * | 2020-04-28 | 2020-08-04 | 四川童燊防水工程有限公司 | Novel high polymer creeping grouting material and manufacturing process thereof |
| CN112551940A (en) * | 2020-12-10 | 2021-03-26 | 辽宁省交通科学研究院有限责任公司 | Direct-vat-set tackifying regenerative modifier and preparation and application methods thereof |
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| CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Casting type mixture asphalt material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872447A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | High-viscosity asphalt material for purifying automobile exhaust and preparation method thereof |
| CN109370242A (en) * | 2018-11-06 | 2019-02-22 | 湖南交通职业技术学院 | A kind of modified asphalt composite and preparation method thereof |
| CN111334057A (en) * | 2020-03-31 | 2020-06-26 | 大连市政设施修建有限公司 | Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof |
| CN111484746A (en) * | 2020-04-28 | 2020-08-04 | 四川童燊防水工程有限公司 | Novel high polymer creeping grouting material and manufacturing process thereof |
| CN112551940A (en) * | 2020-12-10 | 2021-03-26 | 辽宁省交通科学研究院有限责任公司 | Direct-vat-set tackifying regenerative modifier and preparation and application methods thereof |
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Application publication date: 20180227 |