CN108059837A - A kind of modifying agent mother liquor and road asphalt and preparation method thereof - Google Patents
A kind of modifying agent mother liquor and road asphalt and preparation method thereof Download PDFInfo
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- CN108059837A CN108059837A CN201610983350.3A CN201610983350A CN108059837A CN 108059837 A CN108059837 A CN 108059837A CN 201610983350 A CN201610983350 A CN 201610983350A CN 108059837 A CN108059837 A CN 108059837A
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- mother liquor
- modifying agent
- asphalt
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives 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
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses a kind of modifying agent mother liquor and road asphalts and preparation method thereof.The modifying agent mother liquor, in parts by weight, raw material dosage is as follows：78 ~ 94 parts of carbolineum, 0.4 ~ 3.2 part of polyphosphoric acids, 4 ~ 20 parts of SBS.The modifying agent mother liquor of the present invention is to carry out condensation and modification to carbolineum using PPA, and carbolineum is modified in particular by two-step method, so that carbolineum reaches suitable condensation level, improves the aromaticity of carbolineum, is increased suitable for the content of colloid.It matches to prepare road asphalt with the modifying agent mother liquor with asphalt and coal tar pitch, the colloform texture for making road asphalt product is more reasonable, and the high temperature performance of pitch is all strengthened, and the hot storage stability of product improves.
Description
Technical field
The invention belongs to chemical technology fields, relate generally to a kind of modifying agent mother liquor and road asphalt and preparation method thereof,
Particularly a kind of preparation method by the road asphalt of coal tar pitch and asphalt for raw material production.
Background technology
With the continuous expansion of highway construction scale, also synchronous high-speed increases the road asphalt market demand.Currently, oil provides
Source is increasingly deficient, and coal tar asphalt（Coal tar pitch）Processing added value is low, the market price is only half of asphalt or so,
For this purpose, researcher constantly probe into whether can using coal tar pitch as production road asphalt raw material.The coal of produced in conventional processes
Pitch can not meet the needs of road project there is the shortcomings of such as thermal sensitivity is poor, easy to aging, poor ductility.For
The shortcomings that in terms of coal tar pitch performance, coal tar pitch with asphalt is mixed, road asphalt material performance can be promoted, be one
Kind is one of feasible practical technique.
Using SBS as modified oil pitch prepared by macromolecule modifier, due to the modifying function of SBS, oil road is improved
The high temperature performance and response to temperature of road pitch so that bearing capacity, the fatigue resistance of Modified Bitumen Pavement are improved.
CN101985526A discloses a kind of composite modified asphalt for high-grade high road and preparation method thereof, uses
69% ~ 90% asphalt, 5% ~ 30% coal tar pitch, 1% ~ 10% Styrene-Butadiene-Styrene Block Copolymer etc.
The method for preparing composite modified asphalt, preparation process are that asphalt, coal tar pitch and s-B-S is embedding
Section copolymer etc. is common to be heated and is ground through colloid mill, stir to develop and is prepared into target product.It is given birth to using conventional modified pitch
Whole materials are all ground shearing by production. art, and milling time is long, power consumption is big, since the asphalt content of coal tar pitch is excessively high,
Glue nuclear volume is excessive in pitch colloform texture, influences the colloform texture composition of pitch, can cause pitch poor in flexibility, elasticity
And deteriorated low temperature performance, steady heat storage performance are also bad.
CN103694716A discloses a kind of coal tar pitch of modification and preparation method thereof, using 10 ~ 20 parts of asphalt,
50 ~ 30 parts of coal tar pitch, 1 ~ 4 part of SBS, 5 ~ 35 waste Crumb rubber, 0.5 ~ 1 part fire retardant etc. prepare the side of modified pitch
Method.In the method, coal tar pitch accounting is higher（50 ~ 30 parts of coal tar pitch）, asphalt accounting is less（10 ~ 20 parts of oil drip
It is blue or green）, simultaneously because the asphalt content of coal tar pitch is excessively high（Typically larger than 20%）, the asphalitine in pitch colloform texture is caused to contain
Measure excessively high, the composition matching of pitch colloid is unreasonable, can cause pitch poor in flexibility, and cryogenic property and hot storage stability become
Difference.In addition, the mix temperature of pitch can be caused excessively high for the waste Crumb rubber that 5 ~ 35 parts are added in pitch and hot storage stability becomes
Difference.Its preparation process is to be pre-mixed asphalt, coal tar pitch and cosolvent and SBS, then is ground through colloid mill, simultaneous grinding
Process is needed the overground grinding of the larger component of the accountings such as asphalt, coal tar pitch and cosolvent and SBS, and the grinding scale of construction is big, power
Consumption is big.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of modifying agent mother liquor and road asphalt and preparation method thereof,
Road asphalt particularly produced with coal tar pitch and petroleum pitch feedstock and preparation method thereof.It is dripped with the modifying agent mother liquor and oil
Blue or green and coal tar pitch matches to prepare road asphalt, and the colloform texture for making road asphalt product is more reasonable, the high and low temperature of pitch
It can all be strengthened, the hot storage stability of product improves.
The modifying agent mother liquor of the present invention, in parts by weight, raw material dosage is as follows：
78 ~ 94 parts of carbolineum is preferably 80 ~ 92 parts,
0.4 ~ 3.2 part of polyphosphoric acids is preferably 0.8 ~ 3.0 part,
4 ~ 20 parts of SBS is preferably 6 ~ 18 parts.
The boiling range of the carbolineum is 300 ~ 385 DEG C, is preferably 320 ~ 360 DEG C.
The molecular weight of the SBS is 10 ~ 200,000, is linear structure or hub-and-spoke configuration.
The polyphosphoric acid concentration of the polyphosphoric acids is 105wt% ~ 116wt%.
The method that the present invention prepares modifying agent mother liquor, including：
（1）Carbolineum is added in reaction kettle, adds in part polyphosphoric acids, heat temperature raising, control
Reaction temperature processed is 80 ~ 140 DEG C, is preferably 90 ~ 130 DEG C, stirring；
（2）Continuing heat temperature raising, and add in remainder polyphosphoric acids, controlling reaction temperature is 120 ~ 220 DEG C, preferably 140 ~
180 DEG C, stirring obtains modified carbolineum；
（3）SBS is added in into reaction kettle, controls temperature of reaction kettle as 120 ~ 180 DEG C, is preferably 140 ~ 160 DEG C, and is stirred, is obtained
To modifying agent mother liquor.
The present invention is prepared in the method for modifying agent mother liquor, step（1）Middle addition part polyphosphoric acids, step（2）Middle addition
Remainder polyphosphoric acids, wherein step（1）With step（2）The mass ratio for adding in polyphosphoric acids is 1：4~3：4.
The present invention is prepared in the method for modifying agent mother liquor, step（1）When the time of the stirring is 0.5 ~ 5.0 small, stirring
200 ~ 1000 revs/min of speed.
The present invention is prepared in the method for modifying agent mother liquor, step（2）When the time of the stirring is 0.5 ~ 5.0 small, stirring
200 ~ 2000 revs/min of speed.
The present invention is prepared in the method for modifying agent mother liquor, step（3）When the time of the stirring is 1 ~ 10 small, mixing speed
2000 ~ 6000 revs/min.
The present invention provides a kind of road asphalts, and in parts by weight, raw material dosage is as follows：
5 ~ 40 parts of coal tar pitch,
50 ~ 70 parts of asphalt,
8 ~ 20 parts of modifying agent mother liquor.
The coal tar pitch is less than the medium temperature coal pitch of 30wt%, 72 ~ 95 DEG C of softening point for asphalt content.
The asphalt is less than 10wt%, 40 ~ 50 DEG C of softening point for asphalt content.
The present invention also provides a kind of preparation method of road asphalt, including：
Selected from coal tar pitch and petroleum asphalt and above-mentioned modifying agent mother liquor are added in reaction kettle, in 100 ~ 180 DEG C of temperature of reactor, preferably
Under the conditions of 120 ~ 160 DEG C, when stirring 1 ~ 10 is small, 500 ~ 4000 revs/min of mixing speed obtains road asphalt product.
Modifying agent mother liquor prepared by the method for the present invention, both can be to finished product modifying road asphalt, can also be to building asphalt
And petroleum distillate heavy distillate is modified.
The modifying agent mother liquor of the present invention is to carry out condensation and modification to carbolineum using PPA, in particular by two-step method to carbolineum
It is modified, so that carbolineum reaches suitable condensation level, improves the aromaticity of carbolineum, increase suitable for the content of colloid.With this
Modifying agent mother liquor matches to prepare road asphalt with asphalt and coal tar pitch, makes the colloform texture more adduction of road asphalt product
Reason, the high temperature performance of pitch are all strengthened, and the hot storage stability of product improves, and can also save the additive amount of SBS.
Specific embodiment
Technical scheme is described in detail with reference to embodiment, following embodiment is served only for this hair
Bright explanation, it is impossible to be interpreted as limiting the scope of the invention.In the present invention, the number is parts by weight, wt%
For mass fraction.
Embodiment 1
The carbolineum that 84 parts of boiling ranges are 320 ~ 360 DEG C is added in reaction kettle, adds in 0.9 part of polyphosphoric acids（Polyphosphoric acid concentration is
110wt%, similarly hereinafter）, it is heated to 110 DEG C or so, when stirring 2 is small.Continue to be warming up to 160 DEG C or so, add 1.8 parts of poly
Phosphoric acid when stirring 1 is small, obtains modified carbolineum A1.
12 parts of SBS are added in into modified carbolineum A1（Hub-and-spoke configuration, molecular weight are 150,000, similarly hereinafter）, and 150 DEG C are heated to,
Stir 5 it is small when can obtain modifying agent mother liquor A2.
Embodiment 2
The carbolineum that 81 parts of boiling ranges are 320 ~ 360 DEG C is added in reaction kettle, 0.6 part of polyphosphoric acids is added in, is heated to 100 DEG C of left sides
The right side, when stirring 2 is small.Continue to be warming up to 150 DEG C or so, add 2.1 parts of polyphosphoric acids, when stirring 1 is small, obtain modified anthracene
Oily A3.
14 parts of SBS are added in into modified carbolineum A3, and are heated to 155 DEG C, stirring 6 can obtain modifying agent mother liquor when small
A4。
Embodiment 3
The carbolineum that 84 parts of boiling ranges are 320 ~ 360 DEG C is added in reaction kettle, 0.9 part of polyphosphoric acids is added in, is heated to 110 DEG C of left sides
The right side, when stirring 2 is small.Continue to be warming up to 160 DEG C or so, add 2.1 parts of polyphosphoric acids, when stirring 1 is small, obtain modified anthracene
Oily A5.
10 parts of SBS are added in into modified carbolineum A5, and are heated to 150 DEG C, stirring 6 can obtain modifying agent mother liquor when small
A6。
Embodiment 4
By the asphalt M1 that 60 parts of softening points are 45 DEG C（Asphalt content is 8wt%）, 20 parts of softening points be 86 DEG C coal tar pitch
N1（Asphalt content is 24wt%）140 DEG C or so are heated to, adds in 14 parts of modifying agent mother liquor A2, agitator speed 2500
Rev/min, when stirring 2 is small.Can discharge after the completion of whipping process, be cooled to room temperature, purpose product.
Embodiment 5
The coal tar pitch N2 for being 78 DEG C by asphalt M1 that 68 parts of softening points are 45 DEG C, 36 parts of softening points（Asphalt content is
20wt%）120 DEG C or so are heated to, adds in 18 parts of modifying agent mother liquor A2, agitator speed is 2500 revs/min, and stirring 2 is small
When.Can discharge after the completion of whipping process, be cooled to room temperature, purpose product.
Embodiment 6
By the asphalt M2 that 52 parts of softening points are 47 DEG C（Asphalt content is 9wt%）, 10 parts of softening points be 82 DEG C coal tar pitch
N3（Asphalt content is 22wt%）160 DEG C or so are heated to, adds in 10 parts of modifying agent mother liquor A4, agitator speed 2500
Rev/min, when stirring 2 is small.Can discharge after the completion of whipping process, be cooled to room temperature, purpose product.
Embodiment 7
By the asphalt M3 that 68 parts of softening points are 43 DEG C（Asphalt content is 6wt%）, 20 parts of softening points be 78 DEG C coal tar pitch
N2 is heated to 120 DEG C or so, adds in 10 parts of modifying agent mother liquor A6, agitator speed is 2500 revs/min, when stirring 2 is small.
Can discharge after the completion of whipping process, be cooled to room temperature, purpose product.
Comparative example 1
The carbolineum that 84 parts of boiling ranges are 320 ~ 360 DEG C is added in reaction kettle, adds in 12 parts of SBS, and is heated to 150 DEG C or so, is stirred
Mix 5 it is small when can obtain modifying agent mother liquor DA1.
The coal tar pitch N1 that asphalt M1 that 60 parts of softening points are 45 DEG C, 20 parts of softening points are 86 DEG C is heated to 140 DEG C
Left and right adds in 14 parts of modifying agent mother liquor DA1, and agitator speed is 2500 revs/min, when stirring 2 is small.Whipping process is completed
After can discharge, be cooled to room temperature, purpose product.
Comparative example 2
The carbolineum that 84 parts of boiling ranges are 320 ~ 360 DEG C is added in reaction kettle, the polyphosphoric acids and 12 parts of SBS of 2.7 parts of addition, heating
To 110 DEG C or so, when stirring 2 is small, modified carbolineum DA2 is obtained.
The coal tar pitch N1 that asphalt M1 that 60 parts of softening points are 45 DEG C, 20 parts of softening points are 86 DEG C is heated to 140 DEG C
Left and right adds in 14 parts of modifying agent mother liquor DA2, and agitator speed is 2500 revs/min, when stirring 2 is small.Whipping process is completed
After can discharge, be cooled to room temperature, purpose product.
Comparative example 3
84 parts of furfural aromatic hydrocarbons tapped oils are added in reaction kettle, 0.9 part of polyphosphoric acids is added in, is heated to 110 DEG C or so, stirs
Mix 2 it is small when.Continue to be warming up to 160 DEG C or so, add 1.8 parts of polyphosphoric acids, when stirring 1 is small, obtain modified carbolineum DA3.
12 parts of SBS are added in into DA3, and are heated to 150 DEG C, stirring 5 can obtain modifying agent mother liquor DA4 when small.
The coal tar pitch N1 that asphalt M1 that 60 parts of softening points are 45 DEG C, 20 parts of softening points are 86 DEG C is heated to 140 DEG C
Left and right adds in 14 parts of modifying agent mother liquor DA4, and agitator speed is 2500 revs/min, when stirring 2 is small.Whipping process is completed
After can discharge, be cooled to room temperature, purpose product.
Comparative example 4
The coal tar pitch N1 that asphalt M1 that 60 parts of softening points are 45 DEG C, 20 parts of softening points are 86 DEG C is heated to 140 DEG C or so,
And 12 parts of carbolineum, 0.4 part of PPA, 2 parts of SBS are added in, stirring, agitator speed is 2500 revs/min, when stirring 2 is small.
Can discharge after the completion of whipping process, be cooled to room temperature, purpose product.Wherein each raw material is the same as embodiment 1 and 4.
The property of road asphalt product obtained by 1 embodiment of table and comparative example
| Number | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Comparative example 1 |
| 25 DEG C of needle penetrations, 1/10mm | 72 | 70 | 75 | 73 | 92 |
| Softening point, DEG C | 48.3 | 49.8 | 46.3 | 47.5 | 42.2 |
| 10 DEG C of ductilities, cm | 71 | 61 | 60 | 65 | 13 |
| Upper and lower softening point difference（163 DEG C, 48hr）, DEG C | 0.5 | 0.4 | 0.8 | 0.9 | 2.9 |
The property of road asphalt product obtained by 2 comparative example of table
| Number | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| 25 DEG C of needle penetrations, 1/10mm | 78 | 88 | 76 |
| Softening point, DEG C | 45.2 | 40.3 | 46.9 |
| 10 DEG C of ductilities, cm | 24 | 20 | 17 |
| Upper and lower softening point difference（163 DEG C, 48hr）, DEG C | 2.6 | 2.3 | 2.9 |
Claims (13)
1. a kind of modifying agent mother liquor, in parts by weight, raw material dosage is as follows：
78 ~ 94 parts of carbolineum is preferably 80 ~ 92 parts,
0.4 ~ 3.2 part of polyphosphoric acids is preferably 0.8 ~ 3.0 part,
4 ~ 20 parts of SBS is preferably 6 ~ 18 parts.
2. modifying agent mother liquor described in accordance with the claim 1, it is characterised in that：The boiling range of the carbolineum is 300 ~ 385 DEG C, preferably
For 320 ~ 360 DEG C.
3. modifying agent mother liquor described in accordance with the claim 1, it is characterised in that：The molecular weight of the SBS is 10 ~ 200,000, is line
Property structure or hub-and-spoke configuration.
4. modifying agent mother liquor described in accordance with the claim 1, it is characterised in that：The polyphosphoric acid concentration of the polyphosphoric acids is
105wt%~116wt%。
5. the preparation method of any modifying agent mother liquor of claim 1 ~ 4, including：
（1）Carbolineum is added in reaction kettle, adds in part polyphosphoric acids, heat temperature raising, control
Reaction temperature processed is 80 ~ 140 DEG C, is preferably 90 ~ 130 DEG C, stirring；
（2）Continuing heat temperature raising, and add in remainder polyphosphoric acids, controlling reaction temperature is 120 ~ 220 DEG C, preferably 140 ~
180 DEG C, stirring obtains modified carbolineum；
（3）SBS is added in into reaction kettle, controls temperature of reaction kettle as 120 ~ 180 DEG C, is preferably 140 ~ 160 DEG C, and is stirred, is obtained
To modifying agent mother liquor.
6. according to the method for claim 5, it is characterised in that：Step（1）With step（2）Add in the mass ratio of polyphosphoric acids
For 1：4~3：4.
7. according to method described in claim 5 or 6, it is characterised in that：Step（1）The time of the stirring is small for 0.5 ~ 5.0
When, 200 ~ 1000 revs/min of mixing speed.
8. according to method described in claim 5 or 6, it is characterised in that：Step（2）The time of the stirring is small for 0.5 ~ 5.0
When, 200 ~ 2000 revs/min of mixing speed.
9. according to method described in claim 5 or 6, it is characterised in that：Step（3）When the time of the stirring is 1 ~ 10 small,
2000 ~ 6000 revs/min of mixing speed.
10. a kind of road asphalt, in parts by weight, raw material dosage is as follows：
5 ~ 40 parts of coal tar pitch,
50 ~ 70 parts of asphalt,
Any 8 ~ 20 parts of the modifying agent mother liquor of claim 1 ~ 4.
11. according to the road asphalt described in claim 10, it is characterised in that：The coal tar pitch is less than for asphalt content
The medium temperature coal pitch of 30wt%, 72 ~ 95 DEG C of softening point.
12. according to the road asphalt described in claim 7, it is characterised in that：The asphalt is less than for asphalt content
10wt%, 40 ~ 50 DEG C of softening point.
13. the preparation method of any road asphalt of claim 10 ~ 12, including：
Selected from coal tar pitch and petroleum asphalt and any modifying agent mother liquor of claim 1 ~ 4 are added in reaction kettle, temperature of reactor 100 ~
Under the conditions of 180 DEG C, preferably 120 ~ 160 DEG C, when stirring 1 ~ 10 is small, 500 ~ 4000 revs/min of mixing speed obtains road asphalt
Product.
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| CN201610983350.3A CN108059837A (en) | 2016-11-09 | 2016-11-09 | A kind of modifying agent mother liquor and road asphalt and preparation method thereof |
Applications Claiming Priority (1)
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| CN201610983350.3A CN108059837A (en) | 2016-11-09 | 2016-11-09 | A kind of modifying agent mother liquor and road asphalt and preparation method thereof |
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-
2016
- 2016-11-09 CN CN201610983350.3A patent/CN108059837A/en active Pending
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|---|---|---|---|---|
| CN101418130A (en) * | 2008-12-08 | 2009-04-29 | 桂希衡 | Weathering resistant asphalt modifier and application technology thereof |
| CN102653631A (en) * | 2012-04-16 | 2012-09-05 | 交通运输部公路科学研究所 | Mixed asphalt for pavements and preparation method for mixed asphalt |
| CN102766340A (en) * | 2012-08-13 | 2012-11-07 | 交通运输部公路科学研究所 | Modified biological asphalt material, biological asphalt mixture, preparation method thereof and applications |
| CN102924935A (en) * | 2012-11-07 | 2013-02-13 | 中交第一公路勘察设计研究院有限公司 | Method used for modifying low-temperature coal tar asphalt into paving asphalt |
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