CN109553991A - A kind of high adhered modification pitch and preparation method thereof compound based on SBS/ polyurethane - Google Patents
A kind of high adhered modification pitch and preparation method thereof compound based on SBS/ polyurethane Download PDFInfo
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- CN109553991A CN109553991A CN201811447517.XA CN201811447517A CN109553991A CN 109553991 A CN109553991 A CN 109553991A CN 201811447517 A CN201811447517 A CN 201811447517A CN 109553991 A CN109553991 A CN 109553991A
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- 230000004048 modification Effects 0.000 title claims abstract description 46
- 238000012986 modification Methods 0.000 title claims abstract description 46
- 239000004814 polyurethane Substances 0.000 title claims abstract description 38
- 150000001875 compounds Chemical class 0.000 title claims abstract description 37
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title description 8
- 239000000203 mixture Substances 0.000 claims abstract description 73
- 239000004970 Chain extender Substances 0.000 claims abstract description 39
- 239000003607 modifier Substances 0.000 claims abstract description 37
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 35
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- 239000007822 coupling agent Substances 0.000 claims abstract description 27
- 239000003381 stabilizer Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008961 swelling Effects 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims description 30
- 238000010008 shearing Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 11
- 150000001412 amines Chemical group 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical compound C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 claims description 7
- 241001112258 Moca Species 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229920005862 polyol Polymers 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 150000003463 sulfur Chemical class 0.000 claims description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- -1 boric acid ester Chemical class 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 239000010426 asphalt Substances 0.000 abstract description 24
- 206010042674 Swelling Diseases 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 8
- 238000003860 storage Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 150000003673 urethanes Chemical class 0.000 abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 3
- AVWRKZWQTYIKIY-UHFFFAOYSA-N urea-1-carboxylic acid Chemical compound NC(=O)NC(O)=O AVWRKZWQTYIKIY-UHFFFAOYSA-N 0.000 abstract description 3
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010348 incorporation Methods 0.000 abstract description 2
- 239000012948 isocyanate Substances 0.000 abstract description 2
- 150000002513 isocyanates Chemical class 0.000 abstract description 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 6
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C08L2205/05—Polymer mixtures characterised by other features containing polymer components which can react with one another
Abstract
The invention discloses a kind of methods prepared based on the compound high adhered modification pitch of SBS/ polyurethane, it is heated to the matrix pitch SBS modifier to be added after molten condition being uniformly mixed and obtains mixture A, it provides and is not swollen full grown SBS modified pitch, then mixture A is sheared to obtain the SBS modified pitch of swelling development, then stabilizer is added, guarantee the stability of mixture B, then chain extender and coupling agent is added, chain extender be the key that base polyurethane prepolymer for use as be cured reaction form cohesive force, the incorporation of coupling agent can reduce urethanes and chemically react with moisture micro in air, the gas generated is reduced to impact the storage stability and modified effect of pitch, it is eventually adding base polyurethane prepolymer for use as, contain active isocyanate base in base polyurethane prepolymer for use as molecular structure, it is different Cyanic acid ester group can react the amino generated in carbamate groups, with asphalitine with the hydroxyl in asphalt component and chemical reaction generation allophanate occurs.
Description
Technical field
The invention belongs to road engineering material fields, and in particular to a kind of high adhered modification drip compound based on SBS/ polyurethane
Blueness and preparation method thereof, the binder are mainly used in drainage asphalt pavement and paving steel bridge deck SMA mixture.
Background technique
Dynamic viscosity is greater than a kind of binder of 20000Pas under the conditions of high-viscosity asphalt refers to 60 ° of temperature, makes an addition to mixed
Closing in material can significantly improve its anti-fatigue performance；Especially for drainage asphalt mixture, 60 ° of studies have shown that binder
Dynamic viscosity value is the key that durability of porous asphalt mixture guarantees.Voidage after drainage asphalt mixture compacting exists
18% or more, and drainage channel is capable of forming inside mixture, which can quickly and efficiently eliminate road surface product
Water improves rainy day travel safety；And have the function of reducing traffic noise, it is a kind of environment-friendly type road surface.Making is in city road
Lu Zhong effectively reduces urban waterlogging phenomenon by the functions such as seeping water and draining, and can recharge of groundwater resource, realize soil
Regulation Function, meet " sponge city " construction theory.The preparation of high-viscosity asphalt mostly uses matrix pitch and high adhered modification agent
(typical products have Japan to produce TPS and domestic SINOTPS etc.) is blended or matrix pitch and rock asphalt, rubber powder, SBS polymer etc.
Material cladding obtains, and wherein the former applies more universal, and can directly make an addition in loose mineral aggregate in mixing station production,
The production equipment for additionally increasing modified pitch is not needed；But the price of high adhered modification agent is generally higher, and the unit price of individual product is very
To reaching 50000 yuan/ton, in addition product volume is larger, minimum to be not less than 8.0%, generally 12~16%, the limit of economic factor
System causes its popularization and application to be hindered.And the high adhered modification pitch produced using the latter's mode, since component material belongs to
The stronger polymer substance of inertia causes not chemically react between each other, so that the performance for influencing modified pitch is stablized
Property.
Summary of the invention
The purpose of the present invention is to provide a kind of high adhered modification pitch and preparation method thereof compound based on SBS/ polyurethane,
With the defect for solving that existing high adhered modification asphalt price is high, storage stability is bad etc.；It is used in drainage asphalt pavement, no
The durability on road surface only can be improved, processing cost, good cost performance can also be reduced.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of high adhered modification pitch compound based on SBS/ polyurethane, in terms of mass fraction, including 100 parts of matrix pitch,
3~6 parts of base polyurethane prepolymer for use as, 3~5 parts of SBS modifier, 0.2~0.8 part of chain extender, 2~3 parts of coupling agent and quality change for SBS
The stabilizer of property agent 1.0 ‰.
Further, dynamic viscosity value is all larger than 20000Pas.
Further, SBS modifier uses star-like or type SBS polymer；Base polyurethane prepolymer for use as is poly- using polyether-type
Urethane performed polymer H2122A or Polyether-Polyol Polyurethane Prepolymer H2133A；Stabilizer is using elemental sulfur, sulfide or without sulfur type
Close object；Coupling agent uses silane coupling agent or boric acid ester coupler；Chain extender uses binary amine chain extender MOCA or diamine
Class chain extender M-OEA.
A method of preparing the high adhered modification pitch compound based on SBS/ polyurethane, comprising the following steps:
Step 1) is taken 3~6 parts of base polyurethane prepolymer for use as by mass fraction, and 3~5 parts of SBS modifier, 100 parts of matrix pitch,
0.2~0.8 part of chain extender, 2~3 parts of coupling agent are the stabilizer of SBS modifier 1.0 ‰ with quality；
Matrix pitch is heated to SBS modifier is added after molten condition being uniformly mixed and obtains mixture A by step 2), and
Mixture A is sheared；
Stabilizer is added in step 3), the mixture A after shearing, then shear-mixed uniformly obtains mixture B；
Chain extender and coupling agent are added in mixture B and is sheared to obtain mixture C for step 4)；
Step 5), addition base polyurethane prepolymer for use as is developed after mixing in mixture C, and it is multiple that SBS/ polyurethane can be obtained
Close high adhered modification pitch.
Further, SBS modifier uses star-like or type SBS polymer；Base polyurethane prepolymer for use as is poly- using polyether-type
Urethane performed polymer H2122A or Polyether-Polyol Polyurethane Prepolymer H2133A；Stabilizer is using elemental sulfur, sulfide or without sulfur type
Close object；Coupling agent uses silane coupling agent or boric acid ester coupler；Chain extender uses binary amine chain extender MOCA or diamine
Class chain extender M-OEA.
Further, in step 2), matrix pitch is heated to 155~165 DEG C, then by load weighted SBS modifier
It is added in the matrix pitch of molten condition, stirring swelling 30min after being added to SBS, and maintains the temperature at 155~165 DEG C
In range, mixture A is obtained.
Further, after mixture A being heated rapidly to 165~180 DEG C in step 3), use its revolving speed for 3500~
The cutter of 4500r/min is sheared, and the time is not less than 30min.
Further, by stabilizer be added sheared after mixture A in, under the conditions of 165~180 DEG C of temperature with
The rotating speed cutting of 3500~4500r/min is not less than 10min, obtains mixture B.
Further, sequentially add chain extender and coupling agent in mixture B, and 160~170 DEG C at a temperature of shear
Not less than 10min, rate is 3500~4500r/min, obtains mixture C.
Further, base polyurethane prepolymer for use as is added in mixture C, performed polymer is heated to 80~90 DEG C and heat preservation 10 in advance
Then the mixture C that base polyurethane prepolymer for use as is added is not less than 30min in 160~170 DEG C of at a temperature of shearing by~20min；Add
Mixture after work, which is placed in 150~160 DEG C of baking oven, is developed, and the time is 50~60min, and it is poly- that SBS/ can be obtained
The compound high adhered modification pitch of urethane.
Compared with prior art, the invention has the following beneficial technical effects:
A kind of high adhered modification pitch compound based on SBS/ polyurethane of the present invention, urethanes belong to thermosetting material
Expect, the soft and hard segments phase containing similar SBS polymer in molecular structure has both the double grading of rubber and plastics；And contain in structure
There are isocyanate group active function groups, can react to assign matrix better performance with multiple compounds, make an addition to
The high temperature and adhesive property of binder can be significantly improved in matrix pitch, and modified pitch has preferable storage stability.
According to the chemical reaction and SBS polymer generated between isocyanate group and certain active function groups to the significant of high-temperature behavior
Improvement result, to reach the double action for reducing polymer volume and improving storage stability.Select the height of good cost performance
Viscous bitumen is for being conducive to " sponge city " construction theory and preferably being implemented and carried out in drainage road construction.
A kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane of the present invention, because polyurethane has height
Temperature cured characteristic may reduce the rheological characteristic of co-mixing system when being in the condition of high temperature for a long time, or even can shorten it can add
Between working hour, therefore, carried out when prepared by composite modified asphalt using the method for PU is added again after first processing SBS modified pitch, it will
Matrix pitch, which is heated to SBS modifier is added after molten condition being uniformly mixed, obtains mixture A, provides that not to be swollen development complete
SBS modified pitch, then mixture A is sheared to obtain the SBS modified pitch of swelling development, stabilizer is then added,
Guarantee the stability of mixture B, chain extender then is added and coupling agent, chain extender are that base polyurethane prepolymer for use as is cured reaction shape
At the key of cohesive force, the incorporation of coupling agent can reduce moisture micro in urethanes and air and chemistry occurs instead
It answers, the gas for reducing generation impacts the storage stability and modified effect of pitch, is eventually adding base polyurethane prepolymer for use as, gathers
Contain active isocyanate base in urethane performed polymer molecular structure, isocyanate group can react generation with the hydroxyl in asphalt component
Amino in carbamate groups, with asphalitine occurs chemical reaction and generates allophanate.
Further, load weighted SBS modifier is added in the matrix pitch of molten condition, keeps SBS modifier uniform
Ground is dispersed in matrix pitch, and reasonable shear temperature makes pitch be in the state of melt-flow always here, ensure that SBS changes
Property agent matter is in the diffusion and penetrating power of dispersion and asphalt component into polymer network wherein.
Further, after mixture A being heated rapidly to 165~180 DEG C, pitch is made to be in the shape of melt-flow always
State guarantees that modified grain in the diffusion and penetrating power of dispersion and asphalt component into polymer network wherein, uses
High-speed shearing machine carries out shearing, passes through cutting, dispersion, the punching of strength generated between high-speed rotating rotor and stator
Hit, the processes such as sinuous flow cut material in shearing seam, be broken into the particle of 200nm~2 μm rapidly, and then can make to be modified
Agent is preferably dispersed in pitch.
Specific embodiment
The invention will be described in further detail below:
The purpose of the present invention is to provide a kind of high adhered modification pitch and preparation method thereof compound based on SBS/ polyurethane,
With the defect for solving that existing high adhered modification asphalt price is high, storage stability is bad etc.；It is used in drainage asphalt pavement, no
The durability on road surface only can be improved, processing cost, good cost performance can also be reduced.
In order to achieve the above objectives, the present invention the following steps are included:
Step 1) takes 3~6 parts of base polyurethane prepolymer for use as according to mass fraction, 3~5 parts of SBS modifier, matrix pitch 100
Part, 0.2~0.8 part of chain extender, 2~3 parts of coupling agent, quality is the stabilizer of SBS modifier 1.0 ‰；
Wherein matrix pitch is adopted or 65# matrix pitch using 70# matrix pitch；
Matrix pitch is heated to molten condition by step 2), and specific heating temperature is 155~165 DEG C, will be load weighted
SBS modifier is added in the matrix pitch of molten condition, is evenly dispersed in SBS modifier in matrix pitch, here rationally
Shear temperature so that pitch is in the state of melt-flow always, ensure that SBS modifier matter wherein dispersion and pitch
Diffusion and penetrating power of the component into polymer network；It is specifically stirred at low speed using electric mixer, after SBS addition
Stirring swelling is not less than 30min, and maintains the temperature within the scope of 155~165 DEG C, obtains mixture A；
Step 3) after mixture A is heated rapidly to 165~180 DEG C, makes pitch be in the state of melt-flow always,
Guarantee modified grain in the diffusion and penetrating power of dispersion and asphalt component into polymer network wherein, using high speed
Cutter carries out shearing, and revolving speed is 3500~4500r/min, the time is not less than 30min；Pass through high-speed rotating rotor
The processes such as the cutting, dispersion, impact of generated strength, sinuous flow cut material in shearing seam between stator, rapidly
It is broken into the particle of 200nm~2 μm, and then modifying agent can be made preferably to be dispersed in pitch；
Stabilizer is added in the mixture A after having sheared step 4), with 3500 under the conditions of 165~180 DEG C of temperature
The rotating speed cutting of~4500r/min is not less than 10min, obtains mixture B；Guarantee that mixture A has good mobile performance, simultaneously
Required energy is provided for the activation of reactive stabilizer, it is ensured that the generation of chemical reaction avoids excessively high temperature from causing pitch
Aging and co-mixing system in topochemical reaction excessive (colloid is changed into gel-type structure), influence modified effect.Shearing
It is to be sheared stabilizer, be broken into particle, fully develops, is swollen in pitch；
Successively chain extender and coupling agent are added in mixture B without carrying out baking oven development by step 5), mixture B, and
It is not less than 10min in 160~170 DEG C of at a temperature of shearing, rate is 3500~4500r/min, obtains mixture C；Guarantee mixed
Closing object B has good mobile performance, promotes the swelling of chain extender and coupling agent；Shearing be sheared chain extender and coupling agent,
It is broken into particle, fully develops, be swollen in pitch；
Step 6) adds base polyurethane prepolymer for use as in mixture C, and performed polymer is heated to 80~90 DEG C and heat preservation 10 in advance
Then the mixture C that base polyurethane prepolymer for use as is added is not less than 30min in 160~170 DEG C of at a temperature of shearing by~20min；
Mixture after step 7), completion of processing, which is placed in 150~160 DEG C of baking oven, is developed, the time be 50~
The compound high adhered modification pitch of SBS/ polyurethane can be obtained in 60min.
In high adhered modification pitch preparation process, the isocyanate group and binary amine chain extender of base polyurethane prepolymer for use as, drip
Amino reaction in green matter generates allophanate (- NH-CO-NH-), and isocyanate group is reacted with hydroxyl generates carbamate
Base (- NH-COO-).
SBS modifier uses star-like or type SBS polymer.
Base polyurethane prepolymer for use as uses Polyether-Polyol Polyurethane Prepolymer H2122A or Polyether-Polyol Polyurethane Prepolymer H2133A.
Stabilizer is using elemental sulfur, sulfide or without one of sulfur type compound.
Chain extender uses binary amine chain extender MOCA or binary amine chain extender M-OEA.
Coupling agent uses silane coupling agent or boric acid ester coupler.
High adhered modification pitch of the present invention is compound using SBS modifier and urethanes progress, can be abundant
SBS polymer is played to the living features for significantly improving effect and isocyanate group of high-temperature behavior, realizes different modified skills
The mutual supplement with each other's advantages of art.
Embodiment 1:
A kind of high adhered modification pitch compound based on SBS/ polyurethane is made of in terms of mass fraction following material: poly- ammonia
3 parts of ester performed polymer H2122A, 3 parts of star-shaped sbs modifying agent, 100 parts of 70# matrix pitch, 0.4 part of chain extender MOCA and coupling agent
2 parts of KH550, no sulfur type compound stabilizer is the 1.0 ‰ of SBS modifier quality.
The composite modified asphalt of the present embodiment is prepared according to the following steps:
(1) 70# matrix pitch is heated to being slowly added to SBS modifier after 155 DEG C, and is stirred at low speed using blender,
Stirring swelling 30min after to SBS addition, and maintain the temperature at 155 DEG C；
(2) it after the mixture of pitch and SBS modifier being heated rapidly to 165 DEG C, is processed using high-speed shearing machine,
Its revolving speed is 4000r/min, time 30min, and the temperature of mixture is 165 DEG C in shear history；
(3) stabilizer is added in mixture A after shearing, and with 4000r/min under the conditions of 165 DEG C of temperature
Rotating speed cutting 10min；
(4) without carrying out baking oven development successively shearing is added in chain extender and coupling agent by the SBS modified pitch being prepared
In SBS modified pitch afterwards, and 160 DEG C at a temperature of shear 10min, rate 4000r/min；
(5) base polyurethane prepolymer for use as is added in co-mixing system, performed polymer is heated to 80 DEG C and heat preservation 10min in advance, has added
Bi Houzai shears 30min under the conditions of above-mentioned temperature and shear rate；
(6) mixture after completion of processing is placed in 150 DEG C of baking oven and is developed, and time 50min can be obtained
The compound high adhered modification pitch of SBS/ polyurethane.
Embodiment 2:
A kind of high adhered modification pitch compound based on SBS/ polyurethane is made of in terms of mass fraction following material: poly- ammonia
4 parts of ester performed polymer H2122A, 4 parts of star-shaped sbs modifying agent, 100 parts of 70# matrix pitch, 0.6 part of chain extender MOCA and coupling agent
3 parts of KH550, no sulfur type compound stabilizer is the 1.0 ‰ of SBS modifier quality.
The composite modified asphalt of the present embodiment is prepared according to the following steps:
(1) 70# matrix pitch is heated to being slowly added to SBS modifier after 160 DEG C, and is stirred at low speed using blender,
Stirring swelling 30min after to SBS addition, and maintain the temperature within the scope of 160 DEG C；
(2) it after the mixture of pitch and SBS modifier being heated rapidly to 170 DEG C, is processed using high-speed shearing machine,
Its revolving speed is 4500r/min, time 45min, 170 DEG C of temperature of mixture in shear history；
(3) stabilizer is added in mixture A after shearing, and under the conditions of 170 DEG C of temperature again with
The rotating speed cutting 10min of 4500r/min；
(4) successively chain extender and coupling agent are added without carrying out baking oven development for the SBS modified pitch being prepared, and
165 DEG C at a temperature of shear 10min, rate 4500r/min；
(5) base polyurethane prepolymer for use as is added in co-mixing system, performed polymer is heated to 85 DEG C and heat preservation 15min in advance, has added
Bi Houzai is sheared under the conditions of above-mentioned temperature and shear rate not less than 30min；
(6) mixture after completion of processing is placed in 155 DEG C of baking oven and is developed, and time 60min can be obtained
The compound high adhered modification pitch of SBS/ polyurethane.
Embodiment 3:
A kind of high adhered modification pitch compound based on SBS/ polyurethane is made of in terms of mass fraction following material: poly- ammonia
5 parts of ester performed polymer H2133A, 4 parts of type SBS modifying agent, 100 parts of 70# matrix pitch, 0.6 part of chain extender M-OEA and coupling
2 parts of agent KH550, no sulfur type compound stabilizer is the 1.0 ‰ of SBS modifier quality.
The composite modified asphalt of the present embodiment is prepared according to the following steps:
(1) 70# matrix pitch is heated to being slowly added to SBS modifier after 165 DEG C, and is stirred at low speed using blender,
Stirring swelling 30min after to SBS addition, and maintain the temperature within the scope of 165 DEG C；
(2) it after the mixture of pitch and SBS modifier being heated rapidly to 175 DEG C, is processed using high-speed shearing machine,
Its revolving speed is 3500r/min, time 50min, 175 DEG C of temperature of mixture in shear history；
(3) stabilizer is added in mixture A after shearing, and under the conditions of 175 DEG C of temperature again with
The rotating speed cutting 10min of 3500r/min；
(4) successively chain extender and coupling agent are added without carrying out baking oven development for the SBS modified pitch being prepared, and
170 DEG C at a temperature of shear 10min, rate 3500r/min；
(5) base polyurethane prepolymer for use as is added in co-mixing system, performed polymer is heated to 90 DEG C and heat preservation 20min in advance, has added
Bi Houzai shears 35min under the conditions of above-mentioned temperature and shear rate；
(6) mixture after completion of processing is placed in 160 DEG C of baking oven and is developed, and time 50min can be obtained
The compound high adhered modification pitch of SBS/ polyurethane.
Embodiment 4:
A kind of high adhered modification pitch compound based on SBS/ polyurethane is made of in terms of mass fraction following material: poly- ammonia
6 parts of ester performed polymer H2133A, 5 parts of type SBS modifying agent, 100 parts of 70# matrix pitch, 0.8 part of chain extender M-OEA and coupling
3 parts of agent KH550, no sulfur type compound stabilizer is the 1.0 ‰ of SBS modifier quality.
The composite modified asphalt of the present embodiment is prepared according to the following steps:
(1) 65# matrix pitch is heated to being slowly added to SBS modifier after 165 DEG C, and is stirred at low speed using blender,
Stirring swelling 30min after to SBS addition, and maintain the temperature within the scope of 165 DEG C；
(2) it after the mixture of pitch and SBS modifier being heated rapidly to 165 DEG C, is processed using high-speed shearing machine,
Its revolving speed is 4000r/min, time 60min, 190 DEG C of temperature of mixture in shear history；
(3) stabilizer is added in mixture A after shearing, and under the conditions of 165 DEG C of temperature again with
The rotating speed cutting 10min of 4000r/min；
(4) successively chain extender and coupling agent are added without carrying out baking oven development for the SBS modified pitch being prepared, and
165 DEG C at a temperature of shear 10min, rate 4000r/min；
(5) base polyurethane prepolymer for use as is added in co-mixing system, performed polymer is heated to 85 DEG C and heat preservation 15in in advance, has added
Bi Houzai shears 35min under the conditions of above-mentioned temperature and shear rate；
(6) mixture after completion of processing is placed in 160 DEG C of baking oven and is developed, and time 60min can be obtained
The compound high adhered modification pitch of SBS/ polyurethane.
To verify a kind of performance of the high adhered modification pitch compound based on SBS/ polyurethane of the present invention, to the embodiment of the present invention
1~4 carries out high/low temperature, viscosity, the test such as storage stability, and with TPS high adhered modification pitch (preparation of " wet process " technique, 70# base
The mixture proportion of matter pitch and high stick is 88%:12%) it compares, as a result as indicated with 1.
1 high adhered modification pitch different performance comparing result of table
As known from Table 1, compound its dynamic viscosity value of high adhered modification pitch of SBS/ polyurethane prepared by the present invention is all larger than
20000Pas, and high temperature performance, storage stability are also better than TPS high adhered modification pitch, although corresponding high temperature viscosity
It is worth needs bigger, but still that construction mix can be met.It can illustrate the compound high adhered modification pitch energy of SBS/ polyurethane of exploitation above
Enough binders for making drainage asphalt pavement, and largely alternative TPS high-viscosity asphalt.
Claims (10)
1. a kind of high adhered modification pitch compound based on SBS/ polyurethane, which is characterized in that in terms of mass fraction, including matrix drip
Green 100 parts, 3~6 parts of base polyurethane prepolymer for use as, 3~5 parts of SBS modifier, 0.2~0.8 part of chain extender, 2~3 parts of coupling agent and matter
Amount is the stabilizer of SBS modifier 1.0 ‰.
2. a kind of high adhered modification pitch compound based on SBS/ polyurethane according to claim 1, which is characterized in that power
Viscosity number is all larger than 20000Pas.
3. a kind of high adhered modification pitch compound based on SBS/ polyurethane according to claim 1, which is characterized in that SBS
Modifying agent uses star-like or type SBS polymer；Base polyurethane prepolymer for use as is using Polyether-Polyol Polyurethane Prepolymer H2122A or poly-
Ether-based polyurethane performed polymer H2133A；Stabilizer is using elemental sulfur, sulfide or without sulfur type compound；Coupling agent is even using silane
Join agent or boric acid ester coupler；Chain extender uses binary amine chain extender MOCA or binary amine chain extender M-OEA.
4. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane, which comprises the following steps:
Step 1) is taken 3~6 parts of base polyurethane prepolymer for use as by mass fraction, and 3~5 parts of SBS modifier, 100 parts of matrix pitch, chain extension
0.2~0.8 part of agent, 2~3 parts of coupling agent are the stabilizer of SBS modifier 1.0 ‰ with quality；
Matrix pitch is heated to SBS modifier is added after molten condition being uniformly mixed and obtains mixture A, and will mix by step 2)
Object A is closed to be sheared；
Stabilizer is added in step 3), the mixture A after shearing, then shear-mixed uniformly obtains mixture B；
Chain extender and coupling agent are added in mixture B and is sheared to obtain mixture C for step 4)；
Step 5), addition base polyurethane prepolymer for use as is developed after mixing in mixture C, and the compound height of SBS/ polyurethane can be obtained
Adhered modification pitch.
5. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is that SBS modifier uses star-like or type SBS polymer；Base polyurethane prepolymer for use as uses Polyether-Polyol Polyurethane Prepolymer
H2122A or Polyether-Polyol Polyurethane Prepolymer H2133A；Stabilizer is using elemental sulfur, sulfide or without sulfur type compound；Coupling agent
Using silane coupling agent or boric acid ester coupler；Chain extender uses binary amine chain extender MOCA or binary amine chain extender M-
OEA。
6. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is, in step 2), matrix pitch is heated to 155~165 DEG C, and molten then is added in load weighted SBS modifier
In the matrix pitch of state, stirring swelling 30min after being added to SBS, and maintain the temperature within the scope of 155~165 DEG C, it obtains
Mixture A.
7. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is, after mixture A is heated rapidly to 165~180 DEG C in step 2), uses revolving speed cutting for 3500~4500r/min
The machine of cutting is sheared, and the time is not less than 30min.
8. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is, stabilizer is added in the mixture A after having sheared, with 3500~4500r/ under the conditions of 165~180 DEG C of temperature
The rotating speed cutting of min is not less than 10min, obtains mixture B.
9. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is, chain extender and coupling agent is sequentially added in mixture B, and be not less than in 160~170 DEG C of at a temperature of shearing
10min, rate are 3500~4500r/min, obtain mixture C.
10. a kind of method prepared based on the compound high adhered modification pitch of SBS/ polyurethane according to claim 4, special
Sign is, base polyurethane prepolymer for use as is added in mixture C, and performed polymer is heated to 80~90 DEG C and 10~20min of heat preservation in advance, so
The mixture C that base polyurethane prepolymer for use as is added is not less than 30min in 160~170 DEG C of at a temperature of shearing afterwards；After completion of processing
Mixture, which is placed in 150~160 DEG C of baking oven, is developed, and the time is 50~60min, and the compound height of SBS/ polyurethane can be obtained
Adhered modification pitch.
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| CN112521761A (en) * | 2020-11-06 | 2021-03-19 | 广州盛门新材料科技有限公司 | Graphene asphalt additive and preparation method thereof |
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| CN113930079A (en) * | 2021-09-09 | 2022-01-14 | 长春建业集团股份有限公司 | Modified asphalt, preparation method and application thereof |
| CN113930079B (en) * | 2021-09-09 | 2023-09-26 | 长春建业集团股份有限公司 | Modified asphalt, preparation method and application thereof |
| CN114395927A (en) * | 2022-02-09 | 2022-04-26 | 江苏贝施特防水科技有限公司 | Anti-aging elastomer SBS (styrene butadiene styrene) modified asphalt waterproof coiled material and preparation method thereof |
| CN114395927B (en) * | 2022-02-09 | 2024-03-12 | 江苏贝施特防水科技有限公司 | Anti-aging elastomer SBS modified asphalt waterproof coiled material and preparation method thereof |
| CN114773612A (en) * | 2022-05-25 | 2022-07-22 | 山东高速集团有限公司创新研究院 | Polyamine-based hyperbranched polyurethane material grafted SBS (styrene butadiene styrene) and preparation method thereof, and high-viscosity high-elasticity asphalt and preparation method thereof |
| CN114773612B (en) * | 2022-05-25 | 2022-12-27 | 山东高速集团有限公司创新研究院 | Polyamine-based hyperbranched polyurethane material grafted SBS (styrene butadiene styrene) and preparation method thereof, and high-viscosity high-elasticity asphalt and preparation method thereof |
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Application publication date: 20190402 |