CN106554635A - A kind of high softening-point SBS modified emulsifying asphalts and preparation method thereof - Google Patents
A kind of high softening-point SBS modified emulsifying asphalts and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of high softening-point SBS modified emulsifying asphalts and preparation method thereof, each component is in percentage by weight：Matrix pitch 45.0 ~ 60.0%, SBS modifier 1.5 ~ 3.0%, catalytic cracked oil pulp 3 ~ 15%, stabilizer 0.05 ~ 0.5%, cationic emulsifier 0.8 ~ 2.5%, auxiliary agent 0 ~ 0.2%, water 32.0 ~ 42.0%.Carry out the preparation of SBS modified pitch during preparation first, then cationic emulsifier, auxiliary agent are added in 50 ~ 70 DEG C of hot water and prepare soap lye, finally carry out SBS modified emulsifying asphalts are obtained after emulsifying, pressurization are cooled down by colloid mill by SBS modified pitch and soap lye together.Preparation method of the present invention is simple, and step is easily operated, and the SBS modified emulsifying asphalt SBS contents of preparation are high, and softening point is high, and 5 DEG C of ductilities are big, and with excellent high-temperature behavior and cryogenic property, also the high value added utilization for catalytic cracked oil pulp provides an effective way.
Description
Technical field
The present invention relates to a kind of high softening-point SBS modified emulsifying asphalts and preparation method thereof, belong to asphalt production technology neck
Domain.
Background technology
With the fast development of China's transportation system, the emphasis of Highway Cause is from " Large scale construction " to " building and support simultaneously
Weight " transformation, is particularly asphalt material to pavement material and puts forward higher requirement, while also providing new opportunities and challenges.
Wherein, modified emulsifying asphalt has " emulsified asphalt " and " the characteristics of modified pitch " simultaneously, when in use without the need for heating, under room temperature
It is i.e. flowable, with convenient construction, energy saving, the clear superiority such as environmental protection and saving Colophonium usage amount, and curing molding
There is good high-temperature stability afterwards, between low temperature anti-cracking performance, elastic recovery capability and building stones, have good adhesion strong
There is after degree, compound making certain early strength etc., the improvement of these performances can greatly prolong the service life on road surface,
Reduce maintenance number of times and rehabilitation expense.Above many advantages cause modified emulsifying asphalt to play in highway construction and maintenance more
Carry out more important effect.
The existing specification JTG F40-2004 of highway division《Standard specification for construction and acceptance of highway asphalt pavement》In spray-type is changed
Property emulsified asphalt (PCR) required respectively not less than 50 DEG C and 53 DEG C with the softening point of modified emulsifying asphalt (BCR) with mixing and stirring, only
4 DEG C and 7 DEG C are had high demands than No. 70 A level Colophoniumes respectively；And difference is required to the softening point of SBS modified pitch I-B, I-C, I-D
It is not less than 50 DEG C, 55 DEG C and 60 DEG C.That is, the softening point of residue is only capable of reaching I-B after modified emulsifying asphalt breakdown of emulsion
The level of level modified pitch.Therefore, the high-temperature behavior of modified emulsifying asphalt improves not substantially, larger in hot area or the capacity of carriage
In the case of, easily there is high temperature deformation, interlayer adhesion is not enough and the diseases such as rut occur, affect the service life on road surface.
But, for the SBS modified pitch of high softening-point, due to SBS addition contents it is big, it is high with viscosity, the features such as poor fluidity,
It is difficult to its modified emulsifying asphalt carried out after emulsifying, and emulsifying is present, and bin stability is poor, it is general to isolate serious, ductility decay etc.
All over phenomenon.
Chinese patent【CN 102120889B】" a kind of SBS modified emulsifying asphalts compositionss and preparation method thereof " are disclosed,
In mass ratio by 35 parts～65 parts matrix pitches, 1 part～4 parts SBS modifiers, 0.3 part～3 parts compound emulsifying agents, 0.05 part～
0.5 part of stabilizer, 50 DEG C～70 DEG C of 30 parts～60 parts of hot water are obtained SBS modified emulsifying asphalts by mulser emulsifying.Should
The modified emulsifying asphalt softening point relatively low (48.8 DEG C～57.8 DEG C) that method is obtained.
Chinese patent【CN 104530731A】Disclose " a kind of high viscosity spray-type SBS modified emulsifying asphalts and its preparation
Method ", according to percentage by weight, including following component：Matrix pitch 60～70%, SBS modifier 0.18～0.24%, viscosity reduction
Agent (lignosulfonates or GGX-1) 0.06～0.21%, cationic emulsifier 1～2%, stabilizer 0～2%, hydrochloric acid 0.5～
1%, water 25～35%.The softening point and viscosity of modified emulsifying asphalt can be improved using the method, its softening point up to 57 DEG C～
62℃。
Chinese patent【CN 100355834C】Disclose " a kind of SBS modified emulsifying asphalts and preparation method thereof ", its SBS
Modified emulsifying asphalt is composed of the following components by weight percentage：54～62% matrix pitch, 0.6～2.4% SBS are modified
Agent, 0.3～1.6% Sasobit thinners, 0.06%～0.55% WD-3# stabilizers, 1.2～1.8% Colophonium cationes
Emulsifying agent, 35～40% 55～60 DEG C of hot water, 0.4% calcium chloride and 0.15% polyvinyl alcohol.Using Sasobit drop
Stick is a kind of synthesis straight chain aliphatic hydrocarbons, can improve viscosity (so as to improve asphalt softening point) of the Colophonium below 80 DEG C, while
Its viscosity more than 135 DEG C is reduced, makes modified pitch be easy to emulsifying, so as to improve the softening point of modified emulsifying asphalt.The party
The modified emulsifying asphalt softening point of a relatively high (61 DEG C～72 DEG C) that method is obtained.
Chinese patent【CN 102719107A】" a kind of high-performance SBS modified emulsifying asphalt and preparation method thereof " is disclosed,
High-performance SBS modified emulsifying asphalt is made up of following component by weight percentage：Matrix pitch 56.0～67.0%, SBS 1.2
～2.5%, EVA waxes 0.5～1.5%, cationic emulsifier 0.2～2.5%, thickening agent 0～0.2%, water 30.0～42.0%.
EVA waxes are good with the compatibility of Colophonium, can improve the high-temperature behavior of modified pitch, improve 60 DEG C of dynamic viscosities, and have reduction by 135
Asphalt viscosity more than DEG C, plays a part of certain fraction, increases mobility, so as to reduce modified pitch emulsifying processing temperature.Should
The modified emulsifying asphalt softening point that method is obtained is of a relatively high, can reach 76 DEG C.
As can be seen here, the high temperature (135 of modified pitch can be reduced by adding specific thinner in modified pitch
More than DEG C) viscosity, so as to reduce the difficulty of modified pitch emulsifying processing, obtain the modified emulsifying asphalt compared with high softening-point.But
The thinner price such as Sasobit, EVA wax adopted in above-mentioned patent is higher, production cost is high, and these thinners are to modified drip
Blue or green cryogenic property, such as 5 DEG C of ductilities have certain infringement.
The content of the invention
The invention aims to the softening point for solving existing modified emulsifying asphalt is relatively low, such as 5 DEG C ductilities of cryogenic property
The serious problem of decay, there is provided a kind of high softening-point SBS modified emulsifying asphalts and preparation method thereof, the SBS for preparing changes
Property emulsified asphalt emulsifying effectiveness it is good, storage stability is good, and softening point is high, and high temperature performance is notable.
The present invention is adopted the following technical scheme that：A kind of high softening-point SBS modified emulsifying asphalts, each component is according to weight percent
Than being calculated as：Matrix pitch 45.0～60.0%, SBS modifier 1.5～3.0%, catalytic cracked oil pulp 3～15%, stabilizer
0.05～0.5%, cationic emulsifier 0.8～2.5%, auxiliary agent 0～0.2%, water 32.0～42.0%.
Further, the matrix pitch for No. 70 Colophoniumes that needle penetration is 60～80dmm or needle penetration be 80～
No. 90 Colophoniumes of 100dmm.
Further, the SBS modifier is linear structure, and mean molecule quantity is 8～150,000.
Further, in the catalytic cracked oil pulp, the content of aromatic component is more than 50%.
Further, the stabilizer is sulphur-containing stabilizer.
Further, the cationic emulsifier be many amine surfactants, the cationic emulsifier be MQK-1M,
One kind in MQK-1D or MQ3.
Further, the auxiliary agent is methylcellulose MC, hydroxymethyl cellulose CMC, ethyl cellulose EC or ethoxy
One kind in cellulose HEC.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) preparation of SBS modified pitch：Matrix pitch is heated to into 170～190 DEG C, sequentially add catalytic cracked oil pulp,
SBS modifier and stabilizer, are evenly spread to SBS modifier in matrix pitch by high speed shear, shear time control 30
～90min, then stirs at a temperature of 170～185 DEG C and develops 1～4h, the SBS modified pitch of prepared emulsifying；
(2) preparation of soap lye：Cationic emulsifier, auxiliary agent are added in 50～70 DEG C of hot water, are stirred and is added
Enter hydrochloric acid, the pH value for adjusting soap lye is 1.5～3.0；
(3) preparation of SBS modified emulsifying asphalts：SBS modified pitch is added in the asphalt tank of colloid mill, heating keeps
160～180 DEG C, soap lye is added in the Soap liquid pot of colloid mill, heating is kept for 50～70 DEG C, by SBS modified pitch and soap lye one
Rise and SBS modified emulsifying asphalts are obtained after colloid mill carries out emulsifying, pressurization cooling.
Further, the pressure of the step (3) is set to 1～3atm.
Beneficial effects of the present invention：
(1) catalytic cracked oil pulp is rich in fragrance point and saturation point, can swelling SBS, improve dispersions of the SBS in Colophonium
Degree, improves the stability of SBS modified pitch, plays a part of compatilizer；Catalytic cracked oil pulp can also improve the glue of Colophonium simultaneously
Body structure, reduce the high temperature of modified pitch especially more than 135 DEG C when viscosity, i.e. 5 DEG C of low temperature for improving modified pitch prolongs
Degree, plays a part of thinner, and adding catalytic cracked oil pulp can improve the mobility of modified pitch, reduce the emulsifying of modified pitch
Temperature and emulsifying difficulty, while can also improve the ductility of low temperature i.e. 5 DEG C of modified emulsifying asphalt；
(2) the SBS modified emulsifying asphalts for preparing, SBS contents are high, and softening point is tall and big in 70 DEG C, and 5 DEG C of ductilities are more than
20cm, with excellent high-temperature behavior and cryogenic property.
(3) high value added utilization for catalytic cracked oil pulp also provides an effective way.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment one：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 530g, catalytic cracking
Slurry oil 50g, SBS modifier 25g, stabilizer 2.0g, cationic emulsifier 18g, auxiliary agent 0.8g, water 374.2g.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) 530g matrix pitches are heated to into 185 DEG C, add catalytic cracked oil pulp 50g, added under conditions of high speed shear
Enter 25g SBS modifiers and 2.0g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 3.5h is obtained breast
The SBS modified pitch changed；
(2) 18g cationic emulsifier MQK-1D and 0.8g auxiliary agent HEC are added in 374.2g water, are heated to 60 DEG C, stir
Mix uniform, add hydrochloric acid, the pH value for adjusting soap lye is 2；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.
Embodiment two：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 500g, catalytic cracking
Slurry oil 80g, SBS modifier 25g, stabilizer 2.0g, cationic emulsifier 18g, auxiliary agent 0.8g, water 374.2g.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) 500g matrix pitches are heated to into 185 DEG C, add catalytic cracked oil pulp 80g, added under conditions of high speed shear
Enter 25g SBS modifiers and 2.0g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 3.5h is obtained breast
The SBS modified pitch changed；
(2) 18g cationic emulsifier MQK-1D and 0.8g auxiliary agent HEC are added in 374.2g water, are heated to 60 DEG C, stir
Mix uniform, add hydrochloric acid, the pH value for adjusting soap lye is 2；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.
Embodiment three：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 480g, catalytic cracking
Slurry oil 100g, SBS modifier 25g, stabilizer 2.0g, cationic emulsifier 18g, auxiliary agent 0.8g, water 374.2g.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) 480g matrix pitches are heated to into 185 DEG C, add catalytic cracked oil pulp 100g, under conditions of high speed shear
25g SBS modifiers and 2.0g stabilizers are added, 45min is sheared, is then reduced the temperature to 180 DEG C, stirring development 3.5h is obtained
The SBS modified pitch of emulsifying；
(2) 18g cationic emulsifier MQK-1D and 0.8g auxiliary agent HEC are added in 374.2g water, are heated to 60 DEG C, stir
Mix uniform, add hydrochloric acid, the pH value for adjusting soap lye is 2；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.
Comparative example：
A kind of each component content of SBS modified emulsifying asphalts is：It is No. 70 A grade matrix Colophonium 580g, SBS modifier 25g, steady
Determine agent 2.0g, cationic emulsifier 18g, auxiliary agent 0.8g, water 374.2g.
Preparation method comprises the steps：
(1) 580g matrix pitches are heated to into 185 DEG C, under conditions of high speed shear add 25g SBS modifiers and
2.0g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 3.5h, the modified drips of SBS of prepared emulsifying
It is blue or green；
(2) 18gMQK-1D and 0.8g auxiliary agent HEC are added in 374.2g water, are heated to 60 DEG C, stir, added
Hydrochloric acid, the pH value for adjusting soap lye are 2；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.
High softening-point SBS modified emulsifying asphalts prepared by embodiments of the invention one, embodiment two and embodiment three with
SBS modified emulsifying asphalt progressive matter relative analyses prepared by comparative example, as a result as shown in table 1.
By the date comprision in table 1, it is apparent that compared with comparative example, embodiments of the invention one, implement
The bin stability of the high softening-point SBS modified emulsifying asphalts prepared by example two and embodiment three substantially improves, and softening point reaches
To more than 74 DEG C, 5 DEG C of ductilities also substantially improve, and reach the bin stability and height of more than 27cm, i.e. SBS modified emulsifying asphalts
Warm nature can obtain obvious improvement.
Table 1
Example IV：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 550g, catalytic slurries
92g, SBS modifier 20g, stabilizer 2.0g, cationic emulsifier 15g, auxiliary agent 1.0g, water 320g
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：
(1) 550g matrix pitches are heated to into 185 DEG C, add catalytic slurry 92g, added under conditions of high speed shear
20g SBS modifiers and 2.0g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 1h, emulsifying is obtained and uses
SBS modified pitch；
(2) 15g cationic emulsifier MQ3 and 1.0g auxiliary agent CMC are added in 320g water, are heated to 70 DEG C, stirring is equal
It is even, hydrochloric acid is added, the pH value for adjusting soap lye is 1.5；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.The softening point of SBS modified emulsifying asphalts is 74.8 DEG C, 5 DEG C of ductilities
For 28.0cm.
Embodiment five：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 600g, catalytic cracking
Slurry oil 30g, SBS modifier 15g, stabilizer 0.5g, cationic emulsifier 8g, auxiliary agent 2.0g, water 344.5g.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) 600g matrix pitches are heated to into 170 DEG C, add catalytic cracked oil pulp 30g, added under conditions of high speed shear
Enter 15g SBS modifiers and 0.5g stabilizers, shear 30min, then reduce the temperature to 170 DEG C, stirring development 1h is obtained emulsifying
SBS modified pitch；
(2) 8g cationic emulsifier MQK-1M and 2.0g auxiliary agent MC are added in 344.5g water, are heated to 70 DEG C, stirred
Uniformly, hydrochloric acid is added, the pH value for adjusting soap lye is 3；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 160 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 70 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.The softening point of SBS modified emulsifying asphalts is 72.1 DEG C, 5 DEG C of ductilities
For 22.0cm.
Embodiment six：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 450g, catalytic cracking
Slurry oil 150g, SBS modifier 30g, stabilizer 5g, cationic emulsifier 25g, water 340g.
The preparation method of high softening-point SBS modified emulsifying asphalts, comprises the steps：
(1) 450g matrix pitches are heated to into 190 DEG C, add catalytic cracked oil pulp 150g, under conditions of high speed shear
30g SBS modifiers and 5g stabilizers are added, 90min is sheared, is then reduced the temperature to 185 DEG C, stirring development 4h is obtained emulsifying
SBS modified pitch；
(2) 25g cationic emulsifier MQK-1M are added in 340g water, are heated to 50 DEG C, stir, add salt
Acid, the pH value for adjusting soap lye are 3；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 180 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 50 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.The softening point of SBS modified emulsifying asphalts is 79.4 DEG C, 5 DEG C of ductilities
For 36.0cm.
Embodiment seven：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 70 A grade matrix Colophonium 500g, catalytic slurries
42g, SBS modifier 20g, stabilizer 2.0g, cationic emulsifier 15g, auxiliary agent 1.0g, water 420g
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：
(1) 500g matrix pitches are heated to into 185 DEG C, add catalytic slurry 42g, added under conditions of high speed shear
20g SBS modifiers and 2.0g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 3.5h, and emulsifying is obtained
SBS modified pitch；
(2) 15g cationic emulsifier MQK-1M and 1.0g auxiliary agent HEC are added in 420g water, are heated to 60 DEG C, stirred
Uniformly, hydrochloric acid is added, the pH value for adjusting soap lye is 3；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.The softening point of SBS modified emulsifying asphalts is 73.5 DEG C, 5 DEG C of ductilities
For 22.5cm.
Embodiment eight：
A kind of high softening-point SBS modified emulsifying asphalts, each component content is：No. 90 A grade matrix Colophonium 500g, catalytic cracking
Slurry oil 80g, SBS modifier 28g, stabilizer 2.5g, cationic emulsifier 15g, auxiliary agent 1.0g, water 373.5g.
(1) 500g matrix pitches are heated to into 185 DEG C, add catalytic cracked oil pulp 80g, added under conditions of high speed shear
Enter 28g SBS modifiers and 2.5g stabilizers, shear 45min, then reduce the temperature to 180 DEG C, stirring development 4h is obtained emulsifying
SBS modified pitch；
(2) 15g cationic emulsifiers and 1.0g auxiliary agents are added in 373.5g water, are heated to 60 DEG C, stir, plus
Enter hydrochloric acid, the pH value for adjusting soap lye is 2；
(3) SBS modified pitch obtained in (1) is added in the asphalt tank of colloid mill, heating is kept for 170 DEG C, (2) is obtained
Soap lye add colloid mill Soap liquid pot in, heating keep 60 DEG C, SBS modified pitch and soap lye are carried out by colloid mill together
Emulsifying, pressurization cooling are obtained SBS modified emulsifying asphalts.The softening point of SBS modified emulsifying asphalts is 72.0 DEG C, 5 DEG C of ductilities
For 27.5cm.
Claims (9)
1. a kind of high softening-point SBS modified emulsifying asphalts, it is characterised in that：Each component is in percentage by weight：Substrate is dripped
Blue or green 45.0 ~ 60.0%, SBS modifier 1.5 ~ 3.0%, catalytic cracked oil pulp 3 ~ 15%, stabilizer 0.05 ~ 0.5%, cationic emulsifier
0.8 ~ 2.5%, auxiliary agent 0 ~ 0.2%, water 32.0 ~ 42.0%.
2. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：The matrix pitch enters for pin
Spend No. 90 Colophoniumes of No. 70 Colophoniumes or needle penetration for 60 ~ 80 dmm for 80 ~ 100 dmm.
3. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：The SBS modifier is line style
Structure, mean molecule quantity are 8 ~ 150,000.
4. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：In the catalytic cracked oil pulp
The content of aromatic component is more than 50%.
5. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：The stabilizer is that sulfur-bearing is steady
Determine agent.
6. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：The cationic emulsifier is
Many amine surfactants, the cationic emulsifier are the one kind in MQK-1M, MQK-1D or MQ3.
7. high softening-point SBS modified emulsifying asphalts as claimed in claim 1, it is characterised in that：The auxiliary agent is Methyl cellulose
One kind in plain MC, hydroxymethyl cellulose CMC, ethyl cellulose EC or hydroxyethyl cellulose HEC.
8. the preparation method of the high softening-point SBS modified emulsifying asphalts described in claim 1, it is characterised in that：Including following step
Suddenly：
（1）The preparation of SBS modified pitch：Matrix pitch is heated to into 170 ~ 190 DEG C, catalytic cracked oil pulp, SBS is sequentially added and is changed
Property agent and stabilizer, SBS modifier is evenly spread in matrix pitch by high speed shear, shear time control 30 ~ 90
Min, then stirs at a temperature of 170 ~ 185 DEG C and develops 1 ~ 4 h, the SBS modified pitch of prepared emulsifying；
（2）The preparation of soap lye：Cationic emulsifier, auxiliary agent are added in 50 ~ 70 DEG C of hot water, are stirred and is added salt
Acid, the pH value for adjusting soap lye are 1.5 ~ 3.0；
（3）The preparation of SBS modified emulsifying asphalts：Will SBS modified pitch add colloid mill asphalt tank in, heating keep 160 ~
180 DEG C, soap lye is added in the Soap liquid pot of colloid mill, heating is kept for 50 ~ 70 DEG C, and SBS modified pitch and soap lye are passed through together
Colloid mill carries out SBS modified emulsifying asphalts are obtained after emulsifying, pressurization are cooled down.
9. the preparation method of high softening-point SBS modified emulsifying asphalts as claimed in claim 8, it is characterised in that：The step
（3）Pressure be set to 1 ~ 3 atm.
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| CN107868482A (en) * | 2017-12-13 | 2018-04-03 | 湖南云中再生科技股份有限公司 | A kind of SBS modified emulsifying asphalts and its preparation technology |
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