CN105694490B - A kind of preparation method of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt - Google Patents
A kind of preparation method of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt Download PDFInfo
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- CN105694490B CN105694490B CN201610045780.0A CN201610045780A CN105694490B CN 105694490 B CN105694490 B CN 105694490B CN 201610045780 A CN201610045780 A CN 201610045780A CN 105694490 B CN105694490 B CN 105694490B
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- 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
- C08L95/005—Aqueous compositions, e.g. emulsions
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Abstract
The invention discloses a kind of preparation methods of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt.The present invention by by modified pitch with lotion by being centainly mixed with, include the following steps successively：Modified pitch is mixed in a certain ratio by modifying agent and matrix pitch and is prepared, and wherein modifying agent is prepared for montmorillonite suspension liquid and styrene-butadiene latex by spray drying；The emulsification soap lye being prepared by emulsifier and water is added in modified pitch, obtains nano imvite/butadiene-styrene rubber composite modified emulsification asphalt product after mixing through high speed shear.Composite modified emulsification asphalt prepared by the present invention has excellent high temperature performance and pavement performance, improves the storage stability of composite modified emulsification asphalt.The preparation method simple process and low cost is honest and clean simultaneously, energy conservation and environmental protection, conducive to composite modified emulsification asphalt is promoted and applied.
Description
Technical field
The present invention relates to the composite type modified pitch of montmorillonite butadiene-styrene rubber and emulsified asphalt processing technologies, more particularly to a kind of
Emulsified modified asphalt and preparation method thereof.The present invention provides emulsification drips a kind of more safer than heated bitumen, energy saving and environmentally friendly
Blueness is mainly used for the upgrading of road and maintenance and newly-built road construction.
Background technology
Highway cause in China's is grown rapidly in recent years, but being continuously increased with vehicle flowrate and the capacity of carriage, to drip
The early damage on green road surface also gradually shows.Emulsified asphalt has many advantages, such as energy conservation and environmental protection and easy for construction, therefore emulsified asphalt
As the main material of highway maintenance maintenance.
In existing emulsified modified asphalt preparation method, there are emulsification SBR modified pitch and emulsification Montmorillonite Modified Asphalt.
Emulsification SBR modified pitch needs to add emulsifier, stabilizer, PH conditioning agents and thickener, emulsified asphalt prepared by the method
Required cost is higher, higher to equipment requirement.Montmorillonite Modified Asphalt is emulsified, although improving the thermal stability of pitch,
But low-temperature ductility reduces, and is damaged the cryogenic property of pitch.
In the composite modified asphalt of the present invention, styrene butadiene rubber modified asphalt is with it with good low temperature anti-cracking performance
And it is concerned.By adding butadiene-styrene rubber into pitch, rubber is dispersed in molecule in irregular shape in pitch, rubber
Glue particle stress concentration effect excite a large amount of crazings and shear band, can greatly be promoted pitch low temperature ductility and
The wear-resisting property of bituminous paving.But since the stable storage performance of styrene butadiene rubber modified asphalt is relatively poor, thus be allowed to
Montmorillonite Composite is modified pitch, and montmorillonite exists in pitch with lift-off structure, makes dispersion of the rubber in pitch more
Uniformly, the compatibility of butadiene-styrene rubber and pitch is enhanced, the stable storage of modified pitch and its emulsified asphalt can be obviously improved
Property, make it have superior pavement performance.
Invention content
The invention discloses a kind of nano imvite/butadiene-styrene rubber composite modified emulsification asphalt and preparation method thereof, the present invention
By the way that modified pitch and lotion are mixed in a certain ratio preparation, include the following steps successively：Modified pitch is by modifying agent and base
Matter pitch, which is mixed in a certain ratio, to be prepared, and wherein modifying agent is made for montmorillonite suspension liquid and styrene-butadiene latex by spray drying
It is standby；The lotion being prepared by emulsifier and water is added in modified pitch, it is de- to obtain nanometer illiteracy after mixing through high speed shear
Soil/butadiene-styrene rubber composite modified emulsification asphalt product.Composite modified emulsification asphalt prepared by the present invention has excellent high and low temperature
Energy improves the storage stability of composite modified emulsification asphalt.The preparation method simple process and low cost is honest and clean simultaneously, conducive to pushing away
Extensively apply composite modified emulsification asphalt.
A kind of nano imvite/butadiene-styrene rubber composite modified emulsification asphalt and preparation method thereof, it is characterised in that：
(1) it is 60 montmorillonite suspension liquid and styrene-butadiene latex to be prepared into montmorillonite and butadiene-styrene rubber mass ratio by spray drying
~100:100 clay rubber powder is as asphalt modifier；
(2) matrix pitch is heated to 130~160 DEG C, then above-mentioned clay rubber powder is added in matrix pitch, pressed
Clay rubber is 2~10 with matrix pitch mass ratio:100 mixing, then in the condition of 2000~4000r/min of high-speed shearing machine
60~120min of down cut obtains composite modified asphalt；
(3) it is 2~5 by mass ratio：100 emulsifier and water stirs 30min under the conditions of 55~75 DEG C and obtains emulsification soap
Liquid；
(4) finally above-mentioned emulsification soap lye is added to and be heated in 120~160 DEG C of composite modified asphalt, wherein emulsifying
Soap lye is 1 with composite modified asphalt mass ratio:0.6~1, then with high-speed shearing machine in rotating speed 5000~8000m/min conditions
Under, 3~10min of shearing obtains composite modified emulsification asphalt.
Further, the emulsifier is one or more of quaternary ammonium salt or Sulfonates emulsifier and non-ionic breast
Agent is used in compounding.
The present invention compared with prior art the advantages of be：
(1) present invention selects modifying agent of the montmorillonite butadiene-styrene rubber as pitch after spray drying, can make modified drip
Green and its emulsified asphalt storage stability and pavement performance are improved.
(2) emulsified modified asphalt that the present invention obtains has high ductility and low viscosity, and more corresponding modified pitch has height
The characteristics of softening point, various aspects of performance reach Ministry of Communications's product specification requirement.
(3) preparation process of the present invention is simple, it is easy to accomplish, and it is of low cost, it is environmentally friendly, be conducive to emulsified asphalt
It promotes and applies.
Specific embodiment
Embodiment 1
A kind of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt, component proportion are：Asphalt 200g, spray drying
Obtained montmorillonite butadiene-styrene rubber 4g, wherein montmorillonite are 3 with butadiene-styrene rubber mass ratio:5, composite emulsifier 4g, wherein it is non-from
Subtype emulsifier op-10 is 1 with anionic emulsifier neopelex mass ratio:2, water 200g.
It is matched according to said components, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt is prepared using following steps：
(1) matrix pitch is heated to 135 DEG C, montmorillonite styrene-butadiene rubber composite material is added in matrix pitch, is adopted
80min is sheared in 2500r/min with high-speed shearing machine, montmorillonite butadiene-styrene rubber composite modified asphalt is made；
(2) emulsifier op-10 and neopelex are added in 60 DEG C of hot water, stirring 30min is equal to disperseing
It is even, emulsification soap lye is made；
(3) emulsification soap lye is at the uniform velocity added in modified pitch, to 140 DEG C through height by the composite modified asphalt for preparing (1)
Fast cutter obtains montmorillonite butadiene-styrene rubber composite modified emulsification asphalt after 6000r/min shears 3min.
Comparative example 1
Montmorillonite butadiene-styrene rubber is still added without by the formula of embodiment 1 to be modified matrix pitch, in identical item
Emulsified asphalt is prepared using same method under part, performance is shown in Table 1.
Comparative example 2
It adds in by the formula of embodiment 1 but only butadiene-styrene rubber to be modified matrix pitch, make at identical conditions
Emulsified asphalt is prepared with same method, performance is shown in Table 1.
Embodiment 2
A kind of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt, component proportion are：Asphalt 200g, spray drying
Obtained montmorillonite butadiene-styrene rubber 20g, wherein montmorillonite are 1 with butadiene-styrene rubber mass ratio:1, composite emulsifier 10g, wherein non-
Ionic emulsifying agent OP-10 is 1 with ionic emulsifying agent neopelex mass ratio:2, water 200g.
It is matched according to said components, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt is prepared using following steps：
(1) matrix pitch is heated to 160 DEG C, montmorillonite styrene-butadiene rubber composite material is added in matrix pitch, is adopted
120min is sheared in 4000r/min with high-speed shearing machine, montmorillonite butadiene-styrene rubber composite modified asphalt is made；
(2) emulsifier is added in 75 DEG C of hot water, 30min is to being uniformly dispersed for stirring, and emulsification soap lye is made；
(3) emulsification soap lye is at the uniform velocity added in modified pitch, to 155 DEG C through cutting at a high speed by the modified pitch for preparing (1)
It cuts machine and obtains montmorillonite butadiene-styrene rubber composite modified emulsification asphalt after 8000r/min shears 8min.
Embodiment 3
A kind of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt, component proportion are：Asphalt 200g, spray drying
Obtained montmorillonite butadiene-styrene rubber 12g, wherein montmorillonite are 4 with butadiene-styrene rubber mass ratio:5, composite emulsifier 6g, wherein it is non-from
The mass ratio of subtype emulsifier op-10 and ionic emulsifying agent neopelex is 1:2, water 200g.
It is matched according to said components, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt is prepared using following steps：
(1) matrix pitch is heated to 155 DEG C, montmorillonite styrene-butadiene rubber composite material is added in matrix pitch, is adopted
90min is sheared in 3000r/min with high-speed shearing machine, montmorillonite butadiene-styrene rubber composite modified asphalt is made；
(2) emulsifier is added in 68 DEG C of hot water, 30min is to being uniformly dispersed for stirring, and emulsification soap lye is made；
(3) emulsification soap lye is at the uniform velocity added in modified pitch, to 140 DEG C through cutting at a high speed by the modified pitch for preparing (1)
It cuts machine and obtains montmorillonite butadiene-styrene rubber composite modified emulsification asphalt after 7000r/min shears 5min.
Embodiment 4
A kind of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt, component proportion are：Asphalt 200g, spray drying
Obtained montmorillonite butadiene-styrene rubber 16g, wherein montmorillonite are 4 with butadiene-styrene rubber mass ratio:5, composite emulsifier 8g, wherein it is non-from
The mass ratio of subtype emulsifier op-10 and ionic emulsifying agent neopelex is 1:2, water 200g.
It is matched according to said components, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt is prepared using following steps：
(1) matrix pitch is heated to 160 DEG C, montmorillonite styrene-butadiene rubber composite material is added in matrix pitch, is adopted
85min is sheared in 2800r/min machines with high speed shear, montmorillonite butadiene-styrene rubber composite modified asphalt is made；
(2) emulsifier is added in 70 DEG C of hot water, 30min is to being uniformly dispersed for stirring, and emulsification soap lye is made；
(3) emulsification soap lye is at the uniform velocity added in modified pitch, to 145 DEG C through cutting at a high speed by the modified pitch for preparing (1)
It cuts machine and obtains montmorillonite butadiene-styrene rubber composite modified emulsification asphalt after 6500r/min shears 6min.
Embodiment 5
A kind of montmorillonite butadiene-styrene rubber composite modified emulsification asphalt, component proportion are：Asphalt 200g, spray drying
Obtained montmorillonite butadiene-styrene rubber 18g, wherein montmorillonite are 4 with butadiene-styrene rubber mass ratio:5, composite emulsifier 8g, wherein it is non-from
Subtype emulsifier op-10 is 1 with ionic emulsifying agent neopelex mass ratio:2, water 200g.
It is matched according to said components, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt is prepared using following steps：
(1) matrix pitch is heated to 165 DEG C, montmorillonite styrene-butadiene rubber composite material is added in matrix pitch, is adopted
100min is sheared in 4000r/min machines with high speed shear, montmorillonite butadiene-styrene rubber composite modified asphalt is made；
(2) emulsifier is added in 70 DEG C of hot water, 30min is to being uniformly dispersed for stirring, and emulsification soap lye is made；
(3) emulsification soap lye is at the uniform velocity added in modified pitch, to 150 DEG C through cutting at a high speed by the modified pitch for preparing (1)
It cuts machine and obtains montmorillonite butadiene-styrene rubber composite modified emulsification asphalt after 7000r/min shears 6min.
Experimental test is tested according to the test method of Ministry of Communications JTG E20-2011.
1. asphalt penetration test method T0604-2011
2. bitumen ductility test method T0605-2011
3. bituminous softening-point test method T0606-2011
4. pitch viscosity test method T0625-2011
5. pitch En Gela viscosity test methods T0622-1993
6. Asphalt Emulsion Evaporation Residue content test method T0651-1993
7. the upper surplus test method T0652-1993 of emulsified asphalt sieve
8. emulsified asphalt storage stability test method T0655-1993
The test result of 1 modified pitch of table
The test result of 2 modified emulsifying asphalt of table
As can be seen from Table 2, montmorillonite butadiene-styrene rubber composite modified emulsification asphalt prepared by 1~embodiment of the embodiment of the present invention 5
Meet the technology requirement of Ministry of Communications JTG F40-2004, excellent property is shown in key indexes such as softening point, ductility, solid contents
Can, and at the same time ensureing that the Engler degree of emulsified asphalt meets Ministry of Communications JTG F40-2004 requirements.
Claims (1)
1. a kind of preparation method of nano imvite/butadiene-styrene rubber composite modified emulsification asphalt, it is characterised in that：(1) by room temperature
Montmorillonite suspension liquid and styrene-butadiene latex be prepared into after being spray-dried by superheated steam montmorillonite and butadiene-styrene rubber mass ratio for 60~
100:100 clay rubber powder is as asphalt modifier；(2) matrix pitch is heated to 130~160 DEG C, then will be above-mentioned viscous
Native rubber powder is added in matrix pitch, is 2~10 by clay rubber and matrix pitch mass ratio:100 mixing, then in height
60~120min is sheared under conditions of fast 2000~4000r/min of cutter and obtains composite modified asphalt；(3) it is 2 by mass ratio
~5：100 emulsifier and water stirs 30min at 55~75 DEG C and obtains emulsification soap lye；(4) finally above-mentioned emulsification soap lye is pressed
1:0.6~1 mass ratio, which is added to, to be heated in 120~160 DEG C of composite modified asphalt, with high-speed shearing machine in rotating speed
Under the conditions of 5000~8000r/min, 3~10min of shearing obtains composite modified emulsification asphalt；The emulsifier for quaternary ammonium salt or
One or more of Sulfonates emulsifier is used in compounding with nonionic emulsifier.
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| CN107325568A (en) * | 2017-06-29 | 2017-11-07 | 安徽和轩岩沥青科技有限公司 | A kind of preparation method of BUTON rock asphalt modified asphalt mixture |
| CN107572905B (en) * | 2017-07-19 | 2020-06-09 | 浙江省通用砂浆研究院 | Preparation and application of green environment-friendly high-elastic anti-crack pouring mortar for fabricated building |
| CN108314352B (en) * | 2018-01-30 | 2020-09-04 | 交通运输部科学研究院 | Color pavement sealing material, preparation method and application thereof, and color pavement prepared from color pavement sealing material |
| CN109504109A (en) * | 2018-11-30 | 2019-03-22 | 华南理工大学 | A method of improving wet process rubber asphalt storage stability |
| CN114702834B (en) * | 2022-05-12 | 2023-08-29 | 鄂尔多斯市路泰公路工程有限责任公司 | High-viscosity high-weather-resistance emulsified asphalt and preparation method thereof |
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| CN1079409C (en) * | 1998-06-04 | 2002-02-20 | 北京化工大学 | Process for preparing clay-rubber nm-class composite material |
| CN1259375C (en) * | 2004-07-07 | 2006-06-14 | 西北师范大学 | Bentonite composition modified asphalt and its preparing method |
| CN1743381A (en) * | 2005-09-19 | 2006-03-08 | 西北师范大学 | Organic bentonite composition modified emulsified asphalt and its preparing method |
| CN101851360B (en) * | 2010-06-18 | 2013-05-01 | 北京化工大学 | Method for preparing easily mixed high filling clay/rubber nano composite material |
| CN102453331B (en) * | 2010-10-15 | 2014-04-16 | 中国石油化工股份有限公司 | Anti-aging polymer modified asphalt and preparation method thereof |
| CN103773006B (en) * | 2012-10-17 | 2017-09-26 | 上海市政工程设计研究总院（集团）有限公司 | A kind of High Modulus Bituminous Mixtures Additive and preparation method thereof |
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