CN109628063A - A kind of polymer modified asphalt binder and preparation method thereof - Google Patents
A kind of polymer modified asphalt binder and preparation method thereof Download PDFInfo
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- CN109628063A CN109628063A CN201811552552.8A CN201811552552A CN109628063A CN 109628063 A CN109628063 A CN 109628063A CN 201811552552 A CN201811552552 A CN 201811552552A CN 109628063 A CN109628063 A CN 109628063A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F112/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F112/02—Monomers containing only one unsaturated aliphatic radical
- C08F112/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F112/06—Hydrocarbons
- C08F112/08—Styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/10—Esters
- C08F120/12—Esters of monohydric alcohols or phenols
- C08F120/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/42—Nitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/40—Redox systems
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention belongs to technical field of coal chemical industry, more particularly to a kind of polymer modified asphalt binder and preparation method thereof, the specific method for preparing binder pitch includes: by coal tar pitch and polymerized monomer, radical initiator is uniformly mixed, polymerization reaction is carried out at a certain temperature, obtain polymer-modified asphalt, it further heats up, carry out depth aging reaction, obtain binder pitch, the polymer modification that the present invention passes through coal tar asphalt, improve the comprehensive performance of pitch, meet the requirements of adhesive, with simple process, it is easy to operate, energy conservation, efficient advantage, purpose is to solve existing coal tar pitch direct method to prepare binder pitch method single, process conditions are harsh, reaction temperature is high, the difficult serious shortcomings of coking control, the new process and method of coal tar pitch modification are provided.
Description
Technical field
The present invention relates to chemical material technical fields, and in particular to a kind of polymer modified asphalt binder and its preparation side
Method.
Background technique
Coal chemical industry is an important chemical field, and coal tar pitch is the bulk product of coal chemical industry, processes and utilize level
The advanced degree for determining coal chemical technology development, is the critically important technique direction of coal chemical technology.Coal tar pitch is through different processing
It is more can to produce binder pitch, dipping agent bitumen, mesophase pitch, carbonaceous mesophase spherules, needle coke, Carbon fibe etc. for technique
Kind function Carbon Materials, are directed to the binder pitch and dipping agent bitumen to graphite electrode and prewired anode, especially demand
It measures huge, is one of major product of Coal Chemical Engineering Industry.
Coal tar pitch be different extent of polymerizations aromatic hydrocarbon molecule composition mixture, its molecular weight of different types of coal tar pitch and
Molecular structure is not quite similar, and as binder or dipping agent bitumen, and molecular structure and composition also difference are all widely applied
In fields such as the preparations of electrode material.As binder pitch, it is desirable that its β resin content with higher (toluene insolubles TI,
The molten object QI of quinoline) and higher coking value.The β resin content of domestic binder pitch primes is greater than 18%, and coking value
Not less than 54%, and softening point is between 100-125 DEG C.Currently, how to improve the comprehensive performance of binder pitch, including β resin
Content, high coking value and charing low porosity, are the key technical problems that carbon material field faces always.
The country prepares binder pitch and coal tar pitch direct method is mostly used to produce, by tank reactor, high temperature polymerization technique,
Reaction temperature improves the molecular weight of pitch at 400 DEG C or more, realizes the adjusting performance of binder pitch.This process equipment system
It is required that high, reaction temperature is high, and bottom coking is serious, and there are many drawbacks.Application number 201510015130.7 discloses one kind
The preparation method of industrial adhesive pitch uses coal tar pitch for raw material, and 360 DEG C, in nitrogen and oxygen mix atmosphere, high temperature
Oxidative condensation reduces reaction temperature while improving asphaltene molecule amount.Application number 201810289497.1 discloses a kind of viscous
Mixture pitch and preparation method, coal tar pitch direct liquefaction, residue carry out deliming processing, obtain material asphalt.Thereafter with mink cell focus,
Paraformaldehyde or metaformaldehyde crosslinking agent and Catalyzed by P-Toluenesulfonic Acid agent mixing, 120-180 DEG C, under 0.01-2MPa pressure,
In nitrogen and oxygen mix atmosphere, high-temperature oxydation condensation.Application number 201510287747 discloses a kind of pressurization crosslinking hot polymerization
Binder pitch and preparation method, coal tar pitch direct liquefaction pitch are condensed with terephthalyl alcohol heat cross-linking, use sulfuric acid catalysis
Agent.Application number 201410021224 discloses a kind of coal tar pitch direct liquefaction pitch, gradient increased temperature normal pressure cross-linked polymeric, and preparation is glued
Mixture pitch and preparation method.Application number 201410021227 discloses a kind of crosslinking of the DCL/Direct coal liquefaction pitch of high softening-point
Thermal condensation method of modifying, prepares binder pitch.Above-mentioned patent uses different types of coal tar pitch, carries out conventional normal pressure or height
Heat cross-linking is pressed, due to the difference of coal raw materials, to cause the otherness of technique very although different crosslinking agents and catalyst can be used
Greatly, while modified effect fluctuation is very big.
Summary of the invention
The main purpose of the present invention is to provide a kind of methods of polymer modification coal tar pitch preparation binder pitch, with solution
Certainly existing coal tar asphalt direct method prepares binder pitch technology drawback, improves the comprehensive performance of binder pitch.
The technical solution of the application:
A kind of polymer modified asphalt binder, the polymer modified asphalt binder are the sides using monomer polymerization
Formula is modified the structure of pitch by the formation and variation of polymers compositions during monomer polymerization.The polymerization
The softening point of object pitch binder reaches 114 DEG C, toluene insolubles are in 9% or more 19% or more, quinoline insolubles, coking value
54% or more.
A kind of preparation method of polymer modified asphalt binder, steps are as follows:
Step 1: coal tar pitch, polymerized monomer and radical initiator are uniformly mixed；
Step 2:, so that polymerization reaction occurs for polymerized monomer, obtaining polymer modified asphalt under inert gas shielding；
Step 3: further heating up, depth aging reaction is carried out to polymer modified asphalt, obtains binder pitch.
In the step 1, the dosage of polymerized monomer is the 1-30wt% of coal tar pitch dosage.The dosage of radical initiator
For the 0.01-5wt% of coal tar pitch dosage.
In the step 1, need to crush coal tar pitch before mixing.The coal tar pitch is low temperature coal tar pitch, medium temperature coal
The mixing of one or more of pitch, destructive distillation coal tar asphalt.
In the step 1, polymerized monomer is styrene, acrylonitrile, acrylate (first, second, third gradegrade C fat alcohol ester, carbon number
From 1-22), methacrylate, (first, second, third gradegrade C fat alcohol ester, carbon number are mixed from one or more of 1-22).
The radical initiator are as follows: the oxidation-reduction trigger system of oxidant, oxidant and reducing agent composition；Institute
The oxidant stated is alkyl peroxide, alkyl peroxide object, peroxyester, azodiisobutyronitrile, peroxidating two acyl, over cure
The mixing of one or more of hydrochlorate.Reducing agent is fat primary amine, fatty primary secondary amine, fat tertiary amine, ethylenediamine, divinyl three
Amine, triethylene tetramine, tetraethylenepentamine, polyethylene polyamine, ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride,
One of alkyl trimethyl ammonium bromide, zephiran, Alkyl dimethyl benzyl ammonium bromide, alkyl imidazoline
Or two or more blend mixtures,
In the oxidation-reduction trigger system, the molar ratio of oxidant and reducing agent is 1:1~2.
The ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride, alkyl trimethyl ammonium bromide, alkyl-dimethyl
Base benzyl ammonium chloride, Alkyl dimethyl benzyl ammonium bromide, the alkyl carbon number in alkyl imidazoline are 4~32.
In the step 2, polymeric reaction temperature is 20~100 DEG C, and polymerization reaction occurs for predominantly monomer.Polymerization reaction
Time is 3~5 hours.
In the step 2, inert gas is nitrogen or argon gas.
In the step 3, depth aging reaction temperature is 100~300 DEG C, and the depth aging reaction time is 3~5h.It is main
If the part unreacted monomer in pitch continues to polymerize, while polymer occurs radical crosslinking with pitch and reacts.
In above-mentioned preparation method in the application, directly coal tar pitch, monomer are polymerize together with initiator, it is poly- to form pitch
It closes object mixing material and the architectural characteristic of pitch is changed by the formation and variation of polymers compositions in pitch, improve the soft of pitch
Change point index and adhesion strength changes current traditional binders pitch and only pass through pyrocondensation to improve the comprehensive performance of pitch
Reaction is closed, the method for improving its molecular weight adjusts its β resin content, adjusts the single way of pitch comprehensive performance.
Beneficial effects of the present invention:
(1) under the initiation of polymerized monomer primary group of free radicals produced by radical initiator, gathered by polymerization reaction
Polymer modified pitch, in polymerization process, the in-situ polymerization of monomer can make polymer in coal tar pitch matrix in coal tar pitch
It is uniformly dispersed.
(2) effect of reducing agent except with oxidant form oxidationreduction free radical initiation system in addition to, can also in pitch
Carbonyl group react, shield to the inhibition of free radical.
(3) in order to guarantee the extent of polymerization of monomer in coal tar pitch, the application selects two-stage method polymerization, first segment principal security
Polymerization reaction occurs for monomer in pitch, while the part unreacted monomer in second segment principal security pitch continues polymerization, gathers
Closing object can react with pitch generation radical crosslinking, improve the comprehensive performance of polymer modified asphalt.
(4) monomer polymerization reactions in macromolecule are applied in the modification of pitch by the present invention, modified feedstock is cheap,
Dosage is few, source is simple, and operating procedure is not simply cumbersome, and the comprehensive performance of binder pitch is greatly improved.
Specific embodiment
Technical solution of the present invention is further detailed below in conjunction with specific embodiment.
In the present invention, if there is no other explanation, then the component percentages in mixture or composition are based on mixture or combination
Total weight in object.
Embodiment 1
The benzoyl peroxide (BPO) and 15g styrene for taking 0.08g first, are sufficiently stirred dissolution, after 100g medium temperature is dripped
Green (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) crush, mixed with above-mentioned monomer mixture
It closes, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, in 50 DEG C of reaction 5h, continue heating 180
DEG C, compressive reaction 5 hours, gained binder pitch is taken out, the softening point for measuring product is 114 DEG C of softening point, toluene insolubles
19%, quinoline insolubles 9%, coking value 56%.
Embodiment 2
Take the benzoyl peroxide (BPO) of 0.08g, 10g acrylonitrile and 5g styrene first, dissolution be sufficiently stirred, after will
100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) crushes, with above-mentioned list
The mixing of body mixture, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, in 50 DEG C of reaction 5h, after
180 DEG C of temperature of continuing rising, compressive reaction 3 hours, gained binder pitch is taken out, the softening point for measuring product is 114 DEG C of softening point, first
Benzene insoluble 21%, quinoline insolubles 12%, coking value 56%.
Embodiment 3
The benzoyl peroxide (BPO) and 15g acrylonitrile for taking 0.08g first, are sufficiently stirred dissolution, after 100g medium temperature is dripped
Green (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) crush, mixed with above-mentioned monomer mixture
It closes, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, in 50 DEG C of reaction 5h, continue heating 150
DEG C, compressive reaction 3 hours, gained binder pitch is taken out, the softening point for measuring product is 114 DEG C of softening point, toluene insolubles
25%, quinoline insolubles 12%, coking value 57%.
Embodiment 4
The benzoyl peroxide (BPO) and 15g methacrylate for taking 0.08g first, are sufficiently stirred dissolution, after will be in 100g
Warm pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) crushes, and mixes with above-mentioned monomer
Object mixing, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, in 50 DEG C of reaction 5h, continue to heat up
150 DEG C, compressive reaction 3 hours, gained binder pitch is taken out, the softening point for measuring product is 114 DEG C of softening point, toluene insoluble
Object 23%, quinoline insolubles 9%, coking value 56%.
Embodiment 5
The benzoyl peroxide (BPO) and 15g first methacrylate for taking 0.08g first, are sufficiently stirred dissolution, after by 100g
Mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) crushes, mixed with above-mentioned monomer
Object mixing is closed, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, in 50 DEG C of reaction 3h, after of continuing rising
Temperature 150 DEG C, compressive reaction 3 hours, take out gained binder pitch, measure product softening point be 114 DEG C of softening point, toluene not
Molten object 26%, quinoline insolubles 10%, coking value 55%.
Embodiment 6
The benzoyl peroxide (BPO) of 0.08g, 0.06g octadecyltrimethylammonium chloride and 15g acrylonitrile are taken first,
Dissolution is sufficiently stirred, after by 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value
47%) it crushes, mixes, be added in pressure reactor with above-mentioned monomer mixture, is added in pressure reactor, nitrogen atmosphere
Under, 50 DEG C of stirring and dissolvings are warming up to, in 50 DEG C of reaction 5h, continues 150 DEG C of heating, compressive reaction 3 hours, takes out gained binder
Pitch, the softening point for measuring product is 114 DEG C of softening point, toluene insolubles 27%, quinoline insolubles 10%, coking value 57%.
Embodiment 7
The benzoyl peroxide (BPO) of 0.08g, 0.006g diethylenetriamine, 10g acrylonitrile and 5g styrene are taken first,
Dissolution is sufficiently stirred, after by 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value
47%) it crushes, mixes, be added in pressure reactor with above-mentioned monomer mixture, is added in pressure reactor, nitrogen atmosphere
Under, 50 DEG C of stirring and dissolvings are warming up to, in 50 DEG C of reaction 5h, continues 150 DEG C of heating, compressive reaction 3 hours, takes out gained binder
Pitch, the softening point for measuring product is 114 DEG C of softening point, toluene insolubles 23%, quinoline insolubles 9%, coking value 54%.
Embodiment 8
The benzoyl peroxide (BPO) of 0.08g is taken first, dissolution is sufficiently stirred in 0.045g primary octadecylamine and 15g acrylonitrile,
100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) are crushed afterwards, and it is upper
Monomer mixture mixing is stated, is added in pressure reactor, under nitrogen atmosphere, is warming up to 50 DEG C of stirring and dissolvings, is reacted at 50 DEG C
5h continues 150 DEG C of heating, compressive reaction 3 hours, takes out gained binder pitch, and the softening point for measuring product is softening point 114
DEG C, toluene insolubles 27%, quinoline insolubles 10%, coking value 57%.
Embodiment 9
The benzoyl peroxide (BPO) of 0.08g, 0.08g octadecylamine polyoxyethylene ether oxide and 15g acrylonitrile are taken first
It is sufficiently stirred 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value after dissolving
47%) it crushes, mixes, be added in pressure reactor with above-mentioned monomer mixture, under nitrogen atmosphere, it is molten to be warming up to 50 DEG C of stirrings
Solution continues 150 DEG C of heating, compressive reaction 3 hours, takes out gained binder pitch, measure the softening of product in 50 DEG C of reaction 5h
Point is 114 DEG C of softening point, toluene insolubles 27%, quinoline insolubles 10%, coking value 57%.
Embodiment 10
The benzoyl peroxide (BPO) of 0.08g is taken first, and 0.045g fatty acid imidazoline quinoline and 15g acrylonitrile are sufficiently stirred
Dissolution, after by 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) powder
It is broken, it mixes, is added in pressure reactor with above-mentioned monomer mixture, under nitrogen atmosphere, 50 DEG C of stirring and dissolvings are warming up to, 50
DEG C reaction 5h, continue heating 150 DEG C, compressive reaction 3 hours, take out gained binder pitch, measure product softening point be it is soft
Change point 114 DEG C, toluene insolubles 28%, quinoline insolubles 10%, coking value 58%.
Embodiment 11
The azodiisobutyronitrile of 0.08g is taken first, and 0.08g octadecylamine polyoxyethylene ether oxide and 15g acrylonitrile are abundant
Stirring and dissolving, after by 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%)
It crushes, mixes, be added in pressure reactor with above-mentioned monomer mixture, under nitrogen atmosphere, be warming up to 50 DEG C of stirring and dissolvings,
50 DEG C of reaction 5h continue 150 DEG C of heating, compressive reaction 3 hours, take out gained binder pitch, the softening point for measuring product is
114 DEG C of softening point, toluene insolubles 28%, quinoline insolubles 10%, coking value 57%.
Embodiment 12
The ammonium persulfate of 0.08g is taken first, and 0.08g octadecylamine polyoxyethylene ether oxide and 15g acrylonitrile are sufficiently stirred
Dissolution, after by 100g mid temperature pitch (82 DEG C of softening point, toluene insolubles 17%, quinoline insolubles 8%, coking value 47%) powder
It is broken, it mixes, is added in pressure reactor with above-mentioned monomer mixture, under nitrogen atmosphere, 50 DEG C of stirring and dissolvings are warming up to, 50
DEG C reaction 5h, continue heating 150 DEG C, compressive reaction 3 hours, take out gained binder pitch, measure product softening point be it is soft
Change point 114 DEG C, toluene insolubles 27%, quinoline insolubles 12%, coking value 57%.
Claims (8)
1. a kind of polymer modified asphalt binder, which is characterized in that the polymer modified asphalt binder is using single
The mode of body polymerization is modified to obtain by the formation and variation of polymers compositions during monomer polymerization to the structure of pitch
's；The softening point of the polymer-asphalt binder reach 114 DEG C, toluene insolubles 19% or more, quinoline insolubles 9% with
Upper, 54% or more coking value.
2. a kind of preparation method of polymer modified asphalt binder, which is characterized in that steps are as follows:
Step 1: coal tar pitch, polymerized monomer and radical initiator are uniformly mixed；The dosage of polymerized monomer is coal tar pitch dosage
1-30wt%；The dosage of radical initiator is the 0.01-5wt% of coal tar pitch dosage；
Step 2:, so that polymerization reaction occurs for polymerized monomer, obtaining polymer modified asphalt under inert gas shielding；Polymerization is anti-
Answering temperature is 20~100 DEG C, and polymerization reaction time is 3~5 hours；
Step 3: further heating up, depth aging reaction is carried out to polymer modified asphalt, obtains binder pitch；Depth is old
Changing reaction temperature is 100~300 DEG C, and the depth aging reaction time is 3~5h.
3. a kind of preparation method of polymer modified asphalt binder according to claim 2, which is characterized in that the step
In rapid one, need to crush coal tar pitch before mixing；The coal tar pitch is low temperature coal tar pitch, medium temperature coal pitch, destructive distillation coal tar
The mixing of one or more of oil asphalt.
4. a kind of preparation method of polymer modified asphalt binder according to claim 2 or 3, which is characterized in that institute
It states in step 1, polymerized monomer is mixed for one or more of styrene, acrylonitrile, acrylate, methacrylate
It closes；The acrylate, methacrylate carbon number be 1~22.
5. a kind of preparation method of polymer modified asphalt binder according to claim 2 or 3, which is characterized in that institute
The radical initiator stated are as follows: the oxidation-reduction trigger system of oxidant, oxidant and reducing agent composition；The oxidant
For one in alkyl peroxide, alkyl peroxide object, peroxyester, azodiisobutyronitrile, peroxidating two acyl, persulfate
Kind or two or more mixing；Reducing agent is fat primary amine, fatty primary secondary amine, fat tertiary amine, ethylenediamine, diethylenetriamine, triethylene
Tetramine, tetraethylenepentamine, polyethylene polyamine, ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride, alkyl trimethyl
One or more of ammonium bromide, zephiran, Alkyl dimethyl benzyl ammonium bromide, alkyl imidazoline
Blend mixture, the ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride, alkyl trimethyl ammonium bromide, alkyl
Dimethyl benzyl ammonium chloride, Alkyl dimethyl benzyl ammonium bromide, the alkyl carbon number in alkyl imidazoline are 4~32.
6. a kind of preparation method of polymer modified asphalt binder according to claim 4, which is characterized in that described
Radical initiator are as follows: the oxidation-reduction trigger system of oxidant, oxidant and reducing agent composition；The oxidant is alkane
One of base peroxide, alkyl peroxide object, peroxyester, azodiisobutyronitrile, peroxidating two acyl, persulfate or
Two or more mixing；Reducing agent be fat primary amine, fatty primary secondary amine, fat tertiary amine, ethylenediamine, diethylenetriamine, triethylene tetramine,
Tetraethylenepentamine, polyethylene polyamine, ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride, alkyl trimethyl bromination
The mixing of one or more of ammonium, zephiran, Alkyl dimethyl benzyl ammonium bromide, alkyl imidazoline
Mixture, the ethoxylated fatty amines oxide, alkyl trimethyl ammonium chloride, alkyl trimethyl ammonium bromide, alkyl-dimethyl
Base benzyl ammonium chloride, Alkyl dimethyl benzyl ammonium bromide, the alkyl carbon number in alkyl imidazoline are 4~32.
7. a kind of preparation method of polymer modified asphalt binder according to claim 5, which is characterized in that the oxygen
In change-reduction initiating system, the molar ratio of oxidant and reducing agent is 1:1~2.
8. a kind of preparation method of polymer modified asphalt binder according to claim 6, which is characterized in that the oxygen
In change-reduction initiating system, the molar ratio of oxidant and reducing agent is 1:1~2.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138670A (en) * | 2020-01-19 | 2020-05-12 | 济宁碳素集团有限公司 | Preparation method of binder asphalt for low-cost high-performance prebaked anode |
| CN113046023A (en) * | 2021-03-11 | 2021-06-29 | 山西中科化美科技有限责任公司 | Preparation method and application of environment-friendly asphalt |
| CN113046110A (en) * | 2021-03-19 | 2021-06-29 | 北京旭阳科技有限公司 | Preparation method of binder asphalt, binder asphalt and electrode for aluminum smelting |
| CN113667315A (en) * | 2021-08-20 | 2021-11-19 | 华中科技大学 | Polymer modified asphalt and preparation method thereof |
| CN114561106A (en) * | 2022-03-31 | 2022-05-31 | 句容宁武高新技术发展有限公司 | Styrene-acrylonitrile in-situ polymerization modified asphalt binder and preparation method thereof |
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