CN108424661A - A kind of composite modified emulsification asphalt and preparation method thereof that antistrip performance is excellent - Google Patents
A kind of composite modified emulsification asphalt and preparation method thereof that antistrip performance is excellent Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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Abstract
The invention belongs to asphalt production technical fields, and in particular to a kind of composite modified emulsification asphalt and preparation method thereof that antistrip performance is excellent.The excellent composite modified emulsification asphalt of antistrip performance provided by the invention, including following raw material and its parts by weight：3.0 5.0 parts of styrene butadiene styrene block copolymer, 60 75 parts of bi tumenf orr oad, 0.5 1.5 parts of ardealite, 0.5 1.0 parts of compatilizer, 35 45 parts of water, 1.5 3.0 parts of emulsifier, 0.2 0.6 parts of surfactant, 0.5 part of stabilizer.The present invention is compound under the conditions of methyl phenyl silicone oil makees compatilizer by styrene butadiene styrene block copolymer and ardealite, gained composite modified asphalt emulsifies in soap lye, composite modified emulsification asphalt obtained has excellent antistrip performance and high temperature performance, have concurrently demulsification the time it is stable, isolation rate is small, is not easy the characteristics of adhering dust.
Description
Technical field
The invention belongs to asphalt production technical fields, and in particular to a kind of excellent composite modified emulsification drip of antistrip performance
Blueness and preparation method thereof.
Background technology
Under the overload case of heavy load and natural erosion being on the rise, many high-grade highways are not conformed to due to this body structure
Reason, standard is often not achieved in paving material, construction technology etc. in addition, tend to occur part loose, pit-hole, surface are peeled off,
The early diseases such as cracking, track.On the other hand, China long-term existing " reconstruction sets, gently conserves " in road project thinks
Think, causes the highway overall structure of significant proportion that serious destruction does not occur, but superficial layer and cutting optimal are due to sick in early days
Evil does not obtain timely maintenance, and the pavement performances such as wearability, skid resistance, bearing capacity have different degrees of decline, currently
Prosthetic maintenance project amount is huge, can not carry out large-scale bituminous paving overlay, therefore is badly in need of economic, convenient, effective support
Shield mode.
Modified emulsifying asphalt is typically with high molecular polymer (SBS, SBR) for modifying agent, under certain technique, with breast
Agent and Additive and the emulsion liquid formed are not necessarily to heating equipment when in use, have excellent high-temperature stability, low
Warm crack resistance, fatigue resistance and mobility are widely used in road surface sealing and interlaminar bonding；Modified emulsifying asphalt mixture with gather materials
Direct adhesion property is excellent, and the cracking, track and table on road surface can be effectively improved by techniques such as micro-surface area, mist sealing covers
The diseases such as face peeling, can be also used for the cold renewal of old asphalt pavement, are improving road maintenance quality, quickening speed of application, are prolonging
Long construction seasons, reduction project cost etc. polymer modification emulsified asphalt all play huge effect.
Currently, the specification that highway in China department is existing《Highway engineering pitch and Asphalt Mixture Experiment regulation》(JTG
E20-2011) and《Highway Construction of Modified Asphalt Pavement technical specification》(JTG F40-2004) is to the road property of modified emulsifying asphalt
A series of index request can be proposed, however micro-surface area is a kind of relatively fragile system, many modified emulsifying asphalts exist
Softening point is relatively low, high-temperature stability is insufficient, the demulsification time is affected by environment and execution conditions, isolates serious and ductility
Relaxation phenomenon is universal, and running is susceptible to serious surface peeling and bellding, Wu Fachang under high temperature and high frequency load for a long time
Expire the performance requirement of foot maintenance of surface, studies high-performance modified emulsified asphalt and has become and studies for road maintenance engineering field
Emphasis.
Chinese patent application CN106554635A describes a kind of high softening-point SBS modified emulsifying asphalts and its preparation side
Method：Cationic emulsifier, auxiliary agent, are then added in 50~70 DEG C of hot water and make by the preparation for carrying out SBS modified pitch first
SBS modified pitch and soap lye are finally emulsified by colloid mill, SBS modified milks are made after cooling of pressurizeing by standby soap lye together
Change pitch.The method increase the softening points of modified emulsifying asphalt, improve mobility and low-temperature ductility, while reducing modification
The emulsifying temperature and emulsification difficulty of pitch.
Chinese patent application CN106977960A describes a kind of cationic composite modified emulsification asphalt material and its system
Preparation Method：It develops, is obtained after addition response type asphalt modifier stirring composite modified at 170-180 DEG C after rubber powder is sheared
Pitch；Cationic emulsifier, organic stabilizer, inorganic stabilizers are added in hot water by a certain percentage and prepare soap lye, finally
Soap lye is heated to 55-70 DEG C, is dripped with the composite modified emulsification of the cationic is made after the composite modified asphalt mixing and emulsifying of preparation
It is green.The advantages of this kind of method, is to improve the compatibility of system and storage stability.
It can be seen that the addition of specific asphalt modifier and additive can promote modified emulsifying drip to a certain extent
Green high temperature performance and mushy consistency, however, even if using above-mentioned patented technology, the resistance to flaking of modified emulsifying asphalt
Energy, the stability of demulsification time, modifying agent are still unable to get guarantee, wherein rubber powder modified asphalt sheet in the dispersion degree of system
Body viscosity is larger, and as temperature reduces in emulsion process, viscosity can further increase, and causes to emulsify difficulty and increases, when use
It is susceptible to " viscous wheel " and the time too fast phenomenon that is demulsified.Therefore, it researches and develops out a kind of with excellent resistance to flaking
It is extremely urgent to have the modified emulsifying asphalt that the demulsification time stablizes concurrently for energy and high temperature performance.
Invention content
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of excellent composite modified breasts of antistrip performance
Change pitch and preparation method thereof.Composite modified emulsification asphalt provided by the invention has excellent antistrip performance and high and low temperature
Can, have concurrently demulsification the time it is stable, isolation rate is small, is not easy the characteristics of adhering dust.
The technical scheme is that：
A kind of composite modified emulsification asphalt that antistrip performance is excellent, including following raw material and its parts by weight：
3.0-5.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 60-75 parts of bi tumenf orr oad, ardealite
0.5-1.5 parts, 0.5-1.0 parts of compatilizer, 35-45 parts of water, 1.5-3.0 parts of emulsifier, 0.2-0.6 parts of surfactant, stabilization
0.5 part of agent.
Further, the excellent composite modified emulsification asphalt of the antistrip performance, by following raw material and its parts by weight
Array at：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite are compatible
0.5 part of agent, 40 parts of water, 2.5 parts of emulsifier, 0.4 part of surfactant, 0.5 part of stabilizer.
Preferably, the Styrene-Butadiene-Styrene Block Copolymer is that star-like s-B-S is embedding
Section copolymer.
It is further preferred that the Styrene-Butadiene-Styrene Block Copolymer is that petrochina Dushanzi T161B is star-like
Styrene-Butadiene-Styrene Block Copolymer.
Preferably, the compatilizer is methyl phenyl silicone oil.
Preferably, the emulsifier is polyoxyethylene sorbitan laurate.
Preferably, the surfactant is sorbitan sesquialter isostearate.
Preferably, the stabilizer is sodium carboxymethylcellulose.
The present invention also provides the preparation method of the excellent composite modified emulsification asphalt of the antistrip performance, including it is following
Step：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 30-60min with the speed of 3000-3500r/min, stirring development 2-4h at a temperature of 170-190 DEG C,
Ardealite, compatilizer is then added, 40-60min is stirred with the speed of 2000-2500r/min at a temperature of 180 DEG C, is made
SBS/ ardealite composite modified asphalts；
S2 heats water to 60-80 DEG C, and emulsifier, surfactant, stabilizer is added, stirs evenly and is adjusted with hydrochloric acid
PH to 3.5-4.0, obtains soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added
Enter and keep temperature 70 C in colloid mill, by volume 2.0-2.5:1.0 ratio is by SBS/ ardealites composite modified asphalt and soap
Liquid is by colloid mill, with the speed grinding emulsification 10-20min of 800-1000r/min, pressurization it is cooling to get.
The molecular formula of above-mentioned methyl phenyl silicone oil is：C11H16OSi, molecular structural formula are：
The molecular formula of above-mentioned polyoxyethylene sorbitan laurate is：C26H50O10, molecular structural formula is：
The molecular formula of above-mentioned sorbitan sesquialter isostearate is：C66H126O16, molecular structural formula is：
The molecular formula of above-mentioned sodium carboxymethylcellulose is：C8H15NaO8, molecular structural formula is：
New modified drip of the present invention by Styrene-Butadiene-Styrene Block Copolymer (SBS) and ardealite after compound
Blueness is emulsified, and makees compatilizer, methyl phenyl silicone oil and SBS polar molecules and phosphorus stone using methyl phenyl silicone oil in compound tense
Cream powder has a good physical compatibility, and methyl is substituted by phenyl in methyl phenyl silicone oil molecule so that SBS and asphaltene molecule
Between balanced polarities be broken to be formed more stable reticular structure, while ardealite as " medium " be filled in SBS and
The contact interface of pitch provides the asphaltene molecule and the intermolecular resistance for generating dislocation of lazy flow of high fluidity, improves
The overall stability of SBS- pitch solid-liquid two-phase systems, make it is compound after modified pitch be not easy exposed to temperature stress and occur
Sedimentation and isolation.
Currently, there is no the report being applied to polyoxyethylene sorbitan laurate in asphalt emulsification, polyoxyethylene
Anhydrous sorbitol laurate is nonionic surface active agent, has emulsification well, permeates, dispersion performance, in the present invention
It can make to disperse in lotion after SBS and ardealite are compound as emulsifier more uniform.Sorbitan sesquialter is different
Stearate has very strong antistatic property and stability, can improve the motion energy of SBS, makes SBS can be at demulsification initial stage
Asphaltene molecule is quickly passed through, forms stable cross-linked structure, and a certain amount of sorbitan sesquialter isostearate can
To adjust the viscosity of emulsified modified asphalt, adhesive force and antistrip performance between promoting pitch after being demulsified and gathering materials.Carboxymethyl is fine
The plain sodium of dimension is a kind of good emulsion stabilizer, has excellent height temperature stability, can form co-agglomeration with asphalt colloid
Object and certain positively charged impurity are precipitated in emulsion process, to adjust emulsified modified asphalt consistency, to drip when reducing emulsification
The sensibility of green solid content simultaneously makes the demulsification time tend towards stability, and plays the role of chemical increase-volume.
Compared with prior art, the present invention has the advantage that：
(1) proposed by the present invention that SBS/ ardealites composite modified asphalt is being used into particular emulsifier and surfactant system
It is emulsified in standby soap lye, can make the composite modified emulsification asphalt of preparation under the action of temperature stress and during production and transport
Holding is uniformly dispersed, and for the angle on material, dispersibility of the ardealite in matrix pitch is preferable, after compatilizer is added,
SBS is swollen, and ardealite forms " bridged linkage " of physics wound form as filler between SBS and pitch, is formed stable
SBS- ardealites-matrix pitch physical blending system, to improve high-temperature stability, Adhesion property and the overall flow of pitch
Property, reduce isolation rate and temperature sensitivity.The addition of surfactant improves the motion energy of SBS, keeps SBS first in demulsification
Phase can quickly pass through asphaltene molecule, form the reticular structure being cross-linked with each other, it is netted that pitch is then dispersed in macromolecular SBS
In structure, to promoted the demulsification intensity of emulsified asphalt and ensure be demulsified the time stabilization, it is right in Practical Project and specification to meet
The requirement of modified emulsifying asphalt pavement performance.
(2) composite modified emulsification asphalt that preparation method using the present invention obtains, while ensureing high temperature performance,
Have excellent antistrip performance and storage stability, and the time that is demulsified more stablizes, and is not easy the shadow by temperature and execution conditions
It rings, the requirement of High Grade Bitumen Pavement maintenance construction can be suitable for.
Specific implementation mode
The following describes the present invention further through the description of specific embodiments, but this is not the limit to the present invention
System, those skilled in the art's basic thought according to the present invention can make various modifications or improvements, but without departing from this
The basic thought of invention, is all within the scope of the present invention.
Embodiment 1, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, methyl
0.5 part of phenyl silicone oil, 40 parts of water, 2.5 parts of polyoxyethylene sorbitan laurate, sorbitan sesquialter isostearate
0.4 part, 0.5 part of sodium carboxymethylcellulose；The Styrene-Butadiene-Styrene Block Copolymer is petrochina Dushanzi
The star-like Styrene-Butadiene-Styrene Block Copolymer of T161B.Preparation method：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 60min with the speed of 3500r/min, and stirring development 3h, is then added phosphorus stone at a temperature of 180 DEG C
Cream, methyl phenyl silicone oil stir 40min at a temperature of 180 DEG C with the speed of 2000r/min, and obtained SBS/ ardealites are compound to be changed
Property pitch；
S2 heats water to 70 DEG C, and polyoxyethylene sorbitan laurate, the different tristearin of sorbitan sesquialter is added
Acid esters, sodium carboxymethylcellulose stir evenly and with salt acid for adjusting pH to 3.5, obtain soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added
Enter and keeps temperature 70 C in colloid mill, by volume 2.0:1.0 ratio leads to SBS/ ardealites composite modified asphalt and soap lye
Cross colloid mill, with the speed of 1000r/min grinding emulsification 15min, pressurization it is cooling to get.
Embodiment 2, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, methyl
0.5 part of phenyl silicone oil, 40 parts of water, 2.5 parts of polyoxyethylene sorbitan laurate, sorbitan sesquialter isostearate
0.4 part, 0.5 part of sodium carboxymethylcellulose；The Styrene-Butadiene-Styrene Block Copolymer is petrochina Dushanzi
The star-like Styrene-Butadiene-Styrene Block Copolymer of T161B.Preparation method：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 60min with the speed of 3500r/min, and stirring development 3h, is then added phosphorus stone at a temperature of 180 DEG C
Cream, methyl phenyl silicone oil stir 40min at a temperature of 180 DEG C with the speed of 2000r/min, and obtained SBS/ ardealites are compound to be changed
Property pitch；
S2 heats water to 70 DEG C, and polyoxyethylene sorbitan laurate, the different tristearin of sorbitan sesquialter is added
Acid esters, sodium carboxymethylcellulose stir evenly and with salt acid for adjusting pH to 3.5, obtain soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added
Enter and keeps temperature 70 C in colloid mill, by volume 2.5:1.0 ratio leads to SBS/ ardealites composite modified asphalt and soap lye
Cross colloid mill, with the speed of 1000r/min grinding emulsification 15min, pressurization it is cooling to get.
Embodiment 3, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
3.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 60 parts of bi tumenf orr oad, 0.5 part of ardealite, methyl
0.5 part of phenyl silicone oil, 35 parts of water, 1.5 parts of polyoxyethylene sorbitan laurate, sorbitan sesquialter isostearate
0.2 part, 0.5 part of sodium carboxymethylcellulose；The Styrene-Butadiene-Styrene Block Copolymer is petrochina Dushanzi
The star-like Styrene-Butadiene-Styrene Block Copolymer of T161B.Preparation method：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 30min with the speed of 3000r/min, and stirring development 2h, is then added phosphorus stone at a temperature of 170 DEG C
Cream, methyl phenyl silicone oil stir 40min at a temperature of 180 DEG C with the speed of 2000r/min, and obtained SBS/ ardealites are compound to be changed
Property pitch；
S2 heats water to 60 DEG C, and polyoxyethylene sorbitan laurate, the different tristearin of sorbitan sesquialter is added
Acid esters, sodium carboxymethylcellulose stir evenly and with salt acid for adjusting pH to 3.5, obtain soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added
Enter and keeps temperature 70 C in colloid mill, by volume 2.0:1.0 ratio leads to SBS/ ardealites composite modified asphalt and soap lye
Cross colloid mill, with the speed of 800r/min grinding emulsification 10min, pressurization it is cooling to get.
Embodiment 4, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
5.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 75 parts of bi tumenf orr oad, 1.5 parts of ardealite, methyl
1.0 parts of phenyl silicone oil, 45 parts of water, 3.0 parts of polyoxyethylene sorbitan laurate, sorbitan sesquialter isostearate
0.6 part, 0.5 part of sodium carboxymethylcellulose；The Styrene-Butadiene-Styrene Block Copolymer is petrochina Dushanzi
The star-like Styrene-Butadiene-Styrene Block Copolymer of T161B.Preparation method：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 60min with the speed of 3500r/min, and stirring development 4h, is then added phosphorus stone at a temperature of 190 DEG C
Cream, methyl phenyl silicone oil stir 60min at a temperature of 180 DEG C with the speed of 2500r/min, and obtained SBS/ ardealites are compound to be changed
Property pitch；
S2 heats water to 80 DEG C, and polyoxyethylene sorbitan laurate, the different tristearin of sorbitan sesquialter is added
Acid esters, sodium carboxymethylcellulose stir evenly and with salt acid for adjusting pH to 4.0, obtain soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added
Enter and keeps temperature 70 C in colloid mill, by volume 2.5:1.0 ratio leads to SBS/ ardealites composite modified asphalt and soap lye
Cross colloid mill, with the speed of 1000r/min grinding emulsification 20min, pressurization it is cooling to get.
Comparative example 1, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, water 40
Part, 2.5 parts of polyoxyethylene sorbitan laurate, 0.4 part of sorbitan sesquialter isostearate, carboxymethyl cellulose
0.5 part of sodium；The Styrene-Butadiene-Styrene Block Copolymer is the star-like styrene-fourths of petrochina Dushanzi T161B two
Alkene-styrene block copolymer.
The preparation method of the excellent composite modified emulsification asphalt of the antistrip performance is similar to Example 1.
It is with the difference of embodiment 1, is not added with methyl phenyl silicone oil.
Comparative example 2, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, water 40
Part, 2.5 parts of polyoxyethylene sorbitan laurate, 0.4 part of sorbitan sesquialter isostearate, carboxymethyl cellulose
0.5 part of sodium；The Styrene-Butadiene-Styrene Block Copolymer is the star-like styrene-fourths of petrochina Dushanzi T161B two
Alkene-styrene block copolymer.
The preparation method of the excellent composite modified emulsification asphalt of the antistrip performance is similar to Example 2.
It is with the difference of embodiment 2, is not added with methyl phenyl silicone oil.
Comparative example 3, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, methyl
0.5 part of phenyl silicone oil, 40 parts of water, 2.5 parts of polyoxyethylene sorbitan laurate；The s-B-S
Block copolymer is the star-like Styrene-Butadiene-Styrene Block Copolymer of petrochina Dushanzi T161B.
The preparation method of the excellent composite modified emulsification asphalt of the antistrip performance is similar to Example 1.
It is with the difference of embodiment 1, is not added with sorbitan sesquialter isostearate and sodium carboxymethylcellulose.
Comparative example 4, a kind of composite modified emulsification asphalt that antistrip performance is excellent
The excellent composite modified emulsification asphalt of the antistrip performance is made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, methyl
0.5 part of phenyl silicone oil, 40 parts of water, 2.5 parts of polyoxyethylene sorbitan laurate；The s-B-S
Block copolymer is the star-like Styrene-Butadiene-Styrene Block Copolymer of petrochina Dushanzi T161B.
The preparation method of the excellent composite modified emulsification asphalt of the antistrip performance is similar to Example 2.
It is with the difference of embodiment 2, is not added with sorbitan sesquialter isostearate and sodium carboxymethylcellulose.
Comparative example 5, a kind of common emulsified asphalt
The common emulsified asphalt is made of following raw material and its parts by weight：
70 parts of bi tumenf orr oad, 40 parts of water, 2.5 parts of polyoxyethylene sorbitan laurate.
Preparation method：
S1 heats water to 70 DEG C, and polyoxyethylene sorbitan laurate is added, stirs evenly and is adjusted with hydrochloric acid
Soap lye is made in pH to 3.5；
The heating of matrix bi tumenf orr oad is kept for 160 DEG C by S2, and soap lye obtained by step S1 is added in colloid mill and keeps temperature
70 DEG C of degree, by volume 2.0:1.0 by bi tumenf orr oad and soap lye by colloid mill, breast is ground with the speed of 1000r/min
Change 15min, common emulsified asphalt is made after pressurization is cooling.
Comparative example 6, a kind of SBS modified emulsifying asphalts
The SBS modified emulsifying asphalts are made of following raw material and its parts by weight：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 40 parts of water, polyoxyethylene
2.5 parts of anhydrous sorbitol laurate；The Styrene-Butadiene-Styrene Block Copolymer is petrochina Dushanzi T161B
Star-like Styrene-Butadiene-Styrene Block Copolymer.
Preparation method：
S1 uses Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad at a temperature of 180 DEG C
High-speed shearing machine shears 60min with the speed of 3500r/min, and stirring development 3h at a temperature of 180 DEG C is made SBS and is modified drip
It is green；
S2 heats water to 70 DEG C, and polyoxyethylene sorbitan laurate is added, stirs evenly and is adjusted with hydrochloric acid
Soap lye is made in pH to 3.5；
SBS modified pitch heating obtained by step S1 is kept for 180 DEG C by S3, and soap lye obtained by step S2 is added in colloid mill and is protected
Temperature 70 C is held, by volume 2.0:1.0 by SBS modified pitch and soap lye by colloid mill, ground with the speed of 1000r/min
15min is emulsified, SBS modified emulsifying asphalts are made after pressurization is cooling.
Test example one, performance test
1, test material：Pitch prepared by embodiment 1, embodiment 2 and comparative example 1-6.
2, test method：
According to《Highway engineering pitch and Asphalt Mixture Experiment regulation》In part asphalt test to the property of gained pitch
It can be tested.
3, test result：
Test result is as shown in table 1.
Table 1：The results of property comparison of embodiment 1,2 and comparative example 1-6 gained pitches
From table 1 it follows that using the technology of the present invention, using SBS/ ardealites as modifying agent, aminomethyl phenyl silicon is adopted
Oil makees compatilizer, and polyoxyethylene sorbitan laurate makees emulsifier, and sorbitan sesquialter isostearate makees surface
Activating agent, sodium carboxymethylcellulose make composite modified emulsification asphalt made from stabilizer (embodiment 1,2), property indices
Compared to not adding methyl phenyl silicone oil (comparative example 1,2), not adding sorbitan sesquialter isostearate and carboxymethyl cellulose
Plain sodium (comparative example 3,4), common emulsified asphalt (comparative example 5), SBS modified emulsifying asphalts (comparative example 6), which have, to be obviously improved,
It is far above《Highway Construction of Modified Asphalt Pavement technical specification》The technology requirement of (JTG F40-2004).It is embodied in：Demulsification
Time is more stable, and storage stability obtains larger promotion, is easy to mix control of constructing；Ductility and softening point increase, high/low temperature
The larger promotion of performance；En Gela viscosity and rotary viscosity improve, the composite modified emulsification asphalt tool that display is prepared using the present invention
There is excellent Adhesion property, is not easy to peel off under local function, the construction in High Grade Bitumen Pavement can be applied completely
Maintenance.
Claims (9)
1. a kind of composite modified emulsification asphalt that antistrip performance is excellent, which is characterized in that including following raw material and its parts by weight
Number：
3.0-5.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 60-75 parts of bi tumenf orr oad, ardealite 0.5-1.5
Part, 0.5-1.0 parts of compatilizer, 35-45 parts of water, 1.5-3.0 parts of emulsifier, 0.2-0.6 parts of surfactant, 0.5 part of stabilizer.
2. the excellent composite modified emulsification asphalt of antistrip performance as described in claim 1, which is characterized in that by following raw material
And its parts by weight composition：
4.0 parts of Styrene-Butadiene-Styrene Block Copolymer, 70 parts of bi tumenf orr oad, 1.0 parts of ardealite, compatilizer
0.5 part, 40 parts of water, 2.5 parts of emulsifier, 0.4 part of surfactant, 0.5 part of stabilizer.
3. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 1 or 2, which is characterized in that the benzene
Ethylene-butadiene-styrene block copolymer is star-like Styrene-Butadiene-Styrene Block Copolymer.
4. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 3, which is characterized in that the benzene second
Alkene-butadiene-styrene block copolymer is the star-like s-B-S block copolymerizations of petrochina Dushanzi T161B
Object.
5. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 1 or 2, which is characterized in that the phase
Appearance agent is methyl phenyl silicone oil.
6. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 1 or 2, which is characterized in that the breast
Agent is polyoxyethylene sorbitan laurate.
7. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 1 or 2, which is characterized in that the table
Face activating agent is sorbitan sesquialter isostearate.
8. the excellent composite modified emulsification asphalt of antistrip performance as claimed in claim 1 or 2, which is characterized in that described steady
It is sodium carboxymethylcellulose to determine agent.
9. such as the preparation method of the excellent composite modified emulsification asphalt of claim 1-8 any one of them antistrip performances,
It is characterized in that, includes the following steps：
S1 is at a temperature of 180 DEG C, by Styrene-Butadiene-Styrene Block Copolymer and bi tumenf orr oad using high speed
Cutter shears 30-60min with the speed of 3000-3500r/min, stirring development 2-4h at a temperature of 170-190 DEG C, then
Ardealite, compatilizer is added, 40-60min is stirred with the speed of 2000-2500r/min at a temperature of 180 DEG C, SBS/ phosphorus is made
Gypsum composite modified asphalt；
S2 heats water to 60-80 DEG C, and emulsifier, surfactant, stabilizer is added, stir evenly and with salt acid for adjusting pH extremely
3.5-4.0 obtaining soap lye；
SBS/ ardealite composite modified asphalts heating obtained by step S1 is kept for 180 DEG C by S3, and glue is added in soap lye obtained by step S2
Temperature 70 C is kept in body mill, by volume 2.0-2.5:1.0 ratio leads to SBS/ ardealites composite modified asphalt and soap lye
Cross colloid mill, with the speed of 800-1000r/min grinding emulsification 10-20min, pressurization it is cooling to get.
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| CN113389058B (en) * | 2021-06-18 | 2022-06-10 | 科顺防水科技股份有限公司 | Modified asphalt coating material with excellent high and low temperature performance, waterproof coiled material and preparation method of waterproof coiled material |
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