CN108440980A - A kind of preparation method of the modified pitch of good combination property - Google Patents
A kind of preparation method of the modified pitch of good combination property Download PDFInfo
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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
- C08L95/00—Compositions of 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of preparation methods of the modified pitch of good combination property, are made of the raw material of following parts by weight：100 parts of matrix pitch, 46 parts of composite modifier, 1.0 1.5 parts of compatilizer, 0.2 3 parts of surfactant, 12 parts of chemical assistant.The modified pitch of the present invention passes through specific proportioning, the problems of stability in storage of SBS modified pitch is not only well solved, and the high-temperature stability of bituminous paving can be significantly improved and improve low-temperature cracking-resistance, have the advantages that insensitive to temperature change, and the indexs such as needle penetration, softening point, ductility for improving modified pitch comprehensively, extend the service life of bituminous paving.
Description
Technical field
The present invention relates to pavement construction material technical fields, more particularly to a kind of modified pitch of good combination property
Preparation method.
Background technology
Pitch has excellent plasticity and caking property, has long history as road, bridge pavement material.China
Vast in territory, the natural environments such as north and south temperature, humidity, illumination difference is very big, and with the fast development of Chinese national economy,
The volume of traffic increases sharply, and asphalt concrete road surface is faced with baptism.It is right both at home and abroad in the construction of road, bridge
The performance requirement of asphalt material is also increasingly harsher, it is desirable that does not crack, water resistant evil etc., and wishes under Rut resistance, low temperature under high temperature
Hoping has longer service life, and existing plain asphalt can not meet these requirements, it is therefore desirable to is modified to it.
But the performance of existing modified pitch is still to be improved.
Invention content
In order to make up the defect of prior art, the present invention provides a kind of preparation method of the modified pitch of good combination property.
The technical problems to be solved by the invention are achieved by the following technical programs：
A kind of preparation method of the modified pitch of good combination property, is made of the raw material of following parts by weight：Matrix pitch 100
Part, 4-6 parts of composite modifier, 1.0-1.5 parts of compatilizer, 0.2-3 parts of surfactant, 1-2 parts of chemical assistant.
Further, the matrix pitch is bi tumenf orr oad.
Further, the surfactant is quaternary ammonium salt cationic surfactant.
Further, the compatilizer is furfural extract oil.
Further, the chemical assistant by sulphur, methyl ethyl ketone and butyronitrile with mass ratio 56:20:15 mix.
It is compounded using sulphur, methyl ethyl ketone and butyronitrile as chemical assistant in the present invention, the temperature susceplibility of pitch can be reduced,
The softening point of pitch is improved, if inventor is in practice, it has been found that only add methyl ethyl ketone, the softening point of pitch can be pulled low, and be increased
After adding butyronitrile, the softening point that pitch is dragged down by methyl ethyl ketone can be made up under the premise of ensureing quality.
Further, the composite modifier by modified SBS powder, modification infusorial earth, RET asphalt modifiers according to weight
Than 2:1:1 mixes.
Further, the preparation method of the modified SBS powder is：Count in parts by weight, take 10 parts of SBS polymers,
0.05-0.08 parts of vinyltrimethoxysilanes, 1-1.7 parts of maleic anhydrides and 0.5-0.8 parts of methyl methacrylates are added 15
In part hexamethylene, it is then heated to 60-70 DEG C of dissolving, is added in the water that 50 parts of temperature are 68 DEG C with the rotating speed of 2000r/min
Stirring and emulsifying is persistently stirred after emulsification with the rotating speed of 300-500r/min, adds 0.01-0.012 parts of dibenzoyl peroxides
1-1.5h is reacted, cools down after reaction, then filters, filtration product is dry after acetone washs, and obtains modified SBS powder.
Further, the preparation method of the modification infusorial earth is：
（1）After being 30-120 μm at grain size by diatomite ball milling, obtained after processing 40-80min is fired at a temperature of 420-480 DEG C
To the first diatomite processed material；
（2）The mixed solution for the absolute ethyl alcohol that first diatomite processed material and mass concentration are 95% is put into glass container,
And glass container is placed in supersonic cleaning machine, under conditions of power 700-1000W, working frequency 28-40KHz at ultrasound
After managing 20-35min, uses aperture to be detached for 1-3 μm of filter paper, filter paper upper layer substance is obtained by filtration；By upper layer substance in 120-
The second diatomite processed material is made after dry 4-6h at 145 DEG C；Wherein, the use of the first diatomite processed material and ethanol solution
Amount is：2-5g the first diatomite processed materials are added in the ethanol solution of 100ml；
（3）Second diatomite processed material is handled 2-3 hours under nitrogen protection effect at 260-280 DEG C, third silicon is obtained
Diatomaceous earth processed material；
（4）Third diatomite processed material is put into immersion treatment 25-30min in treatment fluid, during which heating keeps treatment fluid
Temperature is 65-75 DEG C, and product is repeatedly washed through filtering with distilled water, then is dried after filtering and obtain the 4th diatomite processed material；Institute
Stating each ingredient and its corresponding parts by weight in treatment fluid is：7-10 parts of nonylphenol polyoxyethylene ether, 3-5 parts of sodium thiosulfate, 50-
55 parts of water；
（5）By the 4th diatomite processed material, distearyl acyl-oxygen aluminum isopropoxide acid esters and sodium chloride with mass ratio 96-98:1:1 throws
Enter in high-speed mixer, temperature is controlled at 60-80 DEG C, is stirred 30-45 minutes, is stirred under conditions of 600 revs/min -1000 revs/min
After the completion of mixing, it is cooled to room temperature.
SBS (Styreneic Block Copolymers, styrene-butadiene-styrene triblock copolymer) is modified
Pitch is due to its outstanding mechanical property and high and low temperature resistance, elastic recovery properties, it has also become the most modified drip of application
Blueness has accounted for 70% or more of whole modified pitch demands.Nevertheless, tradition SBS modified pitch in Practical Project still
There are many problems, are cost problem first, the higher price of SBS asphalt modifiers, generally 3-5 times of asphalt price,
The degree that volume will reach certain just has preferable modified effect, if using excessive SBS, gesture during asphalt modification
The manufacturing cost of modified pitch must be caused excessively high, be also unfavorable for production in this way and promote；Secondly, SBS modified pitch is by macromolecule
Polymer modifiers SBS is as dispersed phase, in 160-180 DEG C of pitch after the swelling of certain time development, by colloid
SBS is distributed to the system reconstituted among continuous asphalt phase with certain uniform particle sizes by mill.But this physical dispersion
The modified pitch mode that approach is realized so that segregation phenomenon easily occurs between SBS and pitch two-phase, and this phenomenon is in star
It is even more serious during the preparation of type SBS modified pitch and use.Therefore, it is steady that SBS dispersion effect and heat in pitch how to be improved
It is qualitative, SBS modified pitch segregation phenomenons are avoided, the important technological problems in Study on Asphalt Modified field are become.In addition, reducing
Ensure on the basis of SBS dosages and raising performance of modified bitumen is of great practical significance.
CN107641328A discloses a kind of preparation method of asphalt modifier comprising following steps：S1. by weight
Number meter, take 10 parts of SBS polymers, 0.05~0.08 part of vinyltrimethoxysilane, 1~1.7 part of maleic anhydride and 0.5~
0.8 part of methyl methacrylate is added in 15 parts of hexamethylenes, is then heated to 60~70 DEG C of dissolvings, and it is 68 to add 50 parts of temperature
DEG C water in the rotating speed stirring and emulsifying of 2000r/min, persistently stirred, added with the rotating speed of 300~500r/min after emulsification
0.01~0.012 part of dibenzoyl peroxide reacts 1~1.5h, cools down after reaction, then filters, filtration product is through acetone
It is dry after washing, obtain modified SBS powder；S2. count in parts by weight, by 10 parts of modified SBS powder, 1~2 part of polyphosphoric acids,
0.5~0.8 part of compatilizer and 2~4 parts of epoxy powder mixing, obtain asphalt modifier.Which solve SBS asphalt modifiers
With the problem of bitumen compatibility difference.But inventor has found in engineering practice, using this modifier modification road asphalt it is low
Warm performance improvement is limited, for depositing the disadvantage that toughness is not high at low temperature in asphalt modification.Inventor has found that by upper
It states modified SBS powder and is used as modifying agent with modification infusorial earth, RET asphalt modifiers compounding, SBS can not only be dramatically increased and be modified drip
Green stability, avoids the appearance of isolation, and can overcome disadvantages mentioned above.The composite modifier of the present invention is for modified pitch
Preparation is a complicated physical and chemical process, not only there is physical blending but also had been chemically reacted, while system Phase stracture
Changed, the space structure of function admirable, the performance of General Promotion pitch can be obtained；On the other hand, it is possible to reduce SBS
The dosage of asphalt modifier reduces the production cost of SBS modified pitch.
The composite modifier of the present invention, not only increases the compatibility between SBS and pitch, pitch is effectively relieved and is using
In isolation, well solved the problems of stability in storage of SBS modified pitch, and the needle for improving modified pitch comprehensively enters
The indexs such as degree, softening point, ductility, the toughness of pitch at low temperature greatly improve, and improve low-temperature cracking-resistance, have good modification
Effect.
In the present invention, first with maleic anhydride and methyl methacrylate-grafted modified SBS polymer, introduce polar group,
Strengthen the polarity of SBS polymer, while using vinyltrimethoxysilane as crosslinking agent, to SBS polymer, maleic anhydride and first
Base methyl acrylate is crosslinked, and one side crosslinking agent can improve maleic anhydride and methyl methacrylate and SBS polymer
Connection probability between chain improves object to improve the grafting rate of maleic anhydride and methyl methacrylate on SBS polymer
Expect utilization rate；Contain organosilicon in another aspect crosslinking agent, the viscosity of SBS polymer can be improved so that SBS polymer it is attached
That effect is more preferable, to strengthen the binding force between SBS modifier and pitch.The present invention is fundamentally that material self structure goes out
Hair improves SBS and the bad problem of bitumen compatibility.
In the present invention, RET asphalt modifiers can improve the fatigue life of matrix pitch, improve its high temperature Rut resistance, resist
Remove, prevent the ability etc. of cold cracking.Moreover, RET asphalt modifiers can improve the storage stability of pitch, be conducive to
The mass production of SBS modified pitch and Repeat-heating use.
In the present invention, diatomaceous property not only has preferably crosslinking after the modification technology means that the application uses
Property can also reduce the softening point of pitch itself, in fuse phase so that pitch coke is finer and close, be mixed into matrix pitch
Modification infusorial earth, can also reduce the thermal coefficient of bituminous paving, and enhancing bituminous paving extends asphalt road to the resistivity of heat
The service life in face.
Inventor has found, after above-mentioned modification infusorial earth is added, can excite modified SBS and RET asphalt modifiers again
Modifying function so that the cross-linked network structure of pitch is even closer, is greatly improved while ensureing mix asphalt ductility
The mechanical property of asphalt material.
The present invention is using modified SBS powder, modification infusorial earth, RET asphalt modifiers compounding as modifying agent to matrix pitch
It is modified processing, and strictly controls the content ratio of each component, has greatly facilitated the reciprocation of each component, mutually its technology
Effect is not to be simply superimposed, and is embodied in mechanical performance index and other performance parameters are greatly improved, realize
“1+1+1>3 " technique effect.
Further, the preparation method of the modified pitch includes the following steps：
（1）Each raw material is weighed according to the ratio；（2）Matrix pitch is warming up to 170-190 DEG C, is sequentially added described composite modified
Agent, surfactant, compatilizer stir evenly, swell 30-60 minutes, then use colloid mill high speed shear 2-4 times, are eventually adding
Above-mentioned chemical assistant, high-speed stirred 1-4 hours to obtain the final product.
The present invention has the advantages that：
The modified pitch of the present invention passes through specific proportioning, has not only well solved the problems of stability in storage of SBS modified pitch,
And the high-temperature stability of bituminous paving can be significantly improved and improve low-temperature cracking-resistance, have insensitive to temperature change excellent
Point, and the indexs such as needle penetration, softening point, ductility for improving modified pitch comprehensively, extend the service life of bituminous paving.
Specific implementation mode
With reference to embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention,
It is not limitation of the invention.
Embodiment 1
A kind of preparation method of the modified pitch of good combination property, is made of the raw material of following parts by weight：Matrix pitch 100
Part, 5 parts of composite modifier, 1.2 parts of compatilizer, 2 parts of surfactant, 1.5 parts of chemical assistant.
Wherein, the matrix pitch is bi tumenf orr oad；The surfactant is quaternary ammonium salt cationic surface
Activating agent；The compatilizer is furfural extract oil；The chemical assistant is by sulphur, methyl ethyl ketone and butyronitrile with mass ratio 56:20:15
It mixes.
The composite modifier is by modified SBS powder, modification infusorial earth, RET asphalt modifiers according to weight ratio 2:1:1 is mixed
It closes.
Wherein, the preparation method of the modified SBS powder is：Count in parts by weight, take 10 parts of SBS polymers, 0.06 part
Vinyltrimethoxysilane, 1.2 parts of maleic anhydrides and 0.6 part of methyl methacrylate are added in 15 parts of hexamethylenes, then add
Heat is dissolved to 65 DEG C, and it is in 68 DEG C of water with the rotating speed stirring and emulsifying of 2000r/min to add 50 parts of temperature, after emulsification with
The rotating speed of 400r/min persistently stirs, and adds 0.01 part of dibenzoyl peroxide reaction 1.2h, cools down after reaction, then
Filtering, filtration product is dry after acetone washs, and obtains modified SBS powder.
The preparation method of the modification infusorial earth is：
（1）After being 30-120 μm at grain size by diatomite ball milling, the first silicon is obtained after processing 60min is fired at a temperature of 460 DEG C
Diatomaceous earth processed material；
（2）The mixed solution for the absolute ethyl alcohol that first diatomite processed material and mass concentration are 95% is put into glass container,
And glass container is placed in supersonic cleaning machine, it is ultrasonically treated 28min under conditions of power 800W, working frequency 32KHz
Afterwards, it uses aperture to be detached for 2 μm of filter paper, filter paper upper layer substance is obtained by filtration；Upper layer substance is made at 135 DEG C after dry 5h
Obtain the second diatomite processed material；Wherein, the first diatomite processed material and the dosage of ethanol solution are：The anhydrous second of 100ml
3g the first diatomite processed materials are added in alcoholic solution；
（3）Second diatomite processed material is handled 2.5 hours under nitrogen protection effect at 270 DEG C, third diatomite is obtained
Processed material；
（4）Third diatomite processed material is put into immersion treatment 28min in treatment fluid, during which heating keeps the temperature for the treatment of fluid
It it is 70 DEG C, product is repeatedly washed through filtering with distilled water, then is dried after filtering and obtained the 4th diatomite processed material；The processing
Each ingredient and its corresponding parts by weight are in liquid：8 parts of nonylphenol polyoxyethylene ether, 4 parts of sodium thiosulfate, 52 parts of water；
（5）By the 4th diatomite processed material, distearyl acyl-oxygen aluminum isopropoxide acid esters and sodium chloride with mass ratio 97:1:1 input
In high-speed mixer, temperature is controlled at 70 DEG C, is stirred 38 minutes under conditions of 800 revs/min, after the completion of stirring, is cooled to often
Temperature.
The preparation method of the modified pitch includes the following steps：
（1）Each raw material is weighed according to the ratio；（2）Matrix pitch is warming up to 180 DEG C, sequentially adds the composite modifier, table
Face activating agent, compatilizer stir evenly, swell 45 minutes, then use colloid mill high speed shear 3 times, are eventually adding above-mentioned chemistry
Auxiliary agent, high-speed stirred 2 hours to obtain the final product.
Embodiment 2
A kind of preparation method of the modified pitch of good combination property, is made of the raw material of following parts by weight：Matrix pitch 100
Part, 4 parts of composite modifier, 1.0 parts of compatilizer, 0.2 part of surfactant, 1 part of chemical assistant.
Wherein, the matrix pitch is bi tumenf orr oad；The surfactant is quaternary ammonium salt cationic surface
Activating agent；The compatilizer is furfural extract oil；The chemical assistant is by sulphur, methyl ethyl ketone and butyronitrile with mass ratio 56:20:15
It mixes.
The composite modifier is by modified SBS powder, modification infusorial earth, RET asphalt modifiers according to weight ratio 2:1:1 is mixed
It closes.
Wherein, the preparation method of the modified SBS powder is：Count in parts by weight, take 10 parts of SBS polymers, 0.05 part
Vinyltrimethoxysilane, 1 part of maleic anhydride and 0.5 part of methyl methacrylate are added in 15 parts of hexamethylenes, then heat
It dissolves, is added in the water that 50 parts of temperature are 68 DEG C with the rotating speed stirring and emulsifying of 2000r/min, with 300r/ after emulsification to 60 DEG C
The rotating speed of min persistently stirs, and adds 0.01 part of dibenzoyl peroxide reaction 1h, cools down after reaction, then filter, mistake
It is dry after acetone washs to filter product, obtains modified SBS powder.
The preparation method of the modification infusorial earth is：
（1）After being 30-120 μm at grain size by diatomite ball milling, the is obtained after processing 40-80min is fired at a temperature of 420 DEG C
One diatomite processed material；
（2）The mixed solution for the absolute ethyl alcohol that first diatomite processed material and mass concentration are 95% is put into glass container,
And glass container is placed in supersonic cleaning machine, it is ultrasonically treated 20min under conditions of power 700W, working frequency 28KHz
Afterwards, it uses aperture to be detached for 1 μm of filter paper, filter paper upper layer substance is obtained by filtration；Upper layer substance is made at 120 DEG C after dry 4h
Obtain the second diatomite processed material；Wherein, the first diatomite processed material and the dosage of ethanol solution are：The anhydrous second of 100ml
2g the first diatomite processed materials are added in alcoholic solution；
（3）Second diatomite processed material is handled 2 hours under nitrogen protection effect at 260 DEG C, is obtained at third diatomite
Manage object；
（4）Third diatomite processed material is put into immersion treatment 25min in treatment fluid, during which heating keeps the temperature for the treatment of fluid
It it is 65 DEG C, product is repeatedly washed through filtering with distilled water, then is dried after filtering and obtained the 4th diatomite processed material；The processing
Each ingredient and its corresponding parts by weight are in liquid：7 parts of nonylphenol polyoxyethylene ether, 3 parts of sodium thiosulfate, 50 parts of water；
（5）By the 4th diatomite processed material, distearyl acyl-oxygen aluminum isopropoxide acid esters and sodium chloride with mass ratio 96:1:1 input
In high-speed mixer, temperature is controlled at 60 DEG C, is stirred 30-45 minutes under conditions of 600 revs/min, after the completion of stirring, is cooled to
Room temperature.
The preparation method of the modified pitch includes the following steps：
（1）Each raw material is weighed according to the ratio；（2）Matrix pitch is warming up to 170 DEG C, sequentially adds the composite modifier, table
Face activating agent, compatilizer stir evenly, swell 30 minutes, then use colloid mill high speed shear 2 times, are eventually adding above-mentioned chemistry
Auxiliary agent, high-speed stirred 1 hour to obtain the final product.
Embodiment 3
A kind of preparation method of the modified pitch of good combination property, is made of the raw material of following parts by weight：Matrix pitch 100
Part, 6 parts of composite modifier, 1.5 parts of compatilizer, 3 parts of surfactant, 2 parts of chemical assistant.
Wherein, the matrix pitch is bi tumenf orr oad；The surfactant is quaternary ammonium salt cationic surface
Activating agent；The compatilizer is furfural extract oil；The chemical assistant is by sulphur, methyl ethyl ketone and butyronitrile with mass ratio 56:20:15
It mixes.
The composite modifier is by modified SBS powder, modification infusorial earth, RET asphalt modifiers according to weight ratio 2:1:1 is mixed
It closes.
Wherein, the preparation method of the modified SBS powder is：Count in parts by weight, take 10 parts of SBS polymers, 0.08 part
Vinyltrimethoxysilane, 1.7 parts of maleic anhydrides and 0.8 part of methyl methacrylate are added in 15 parts of hexamethylenes, then add
Heat is dissolved to 70 DEG C, and it is in 68 DEG C of water with the rotating speed stirring and emulsifying of 2000r/min to add 50 parts of temperature, after emulsification with
The rotating speed of 500r/min persistently stirs, and adds 0.012 part of dibenzoyl peroxide reaction 1.5h, cools down after reaction, so
After filter, filtration product is dry after acetone washs, and obtains modified SBS powder.
The preparation method of the modification infusorial earth is：
（1）After being 30-120 μm at grain size by diatomite ball milling, the is obtained after processing 40-80min is fired at a temperature of 480 DEG C
One diatomite processed material；
（2）The mixed solution for the absolute ethyl alcohol that first diatomite processed material and mass concentration are 95% is put into glass container,
And glass container is placed in supersonic cleaning machine, it is ultrasonically treated 35min under conditions of power 1000W, working frequency 40KHz
Afterwards, it uses aperture to be detached for 3 μm of filter paper, filter paper upper layer substance is obtained by filtration；Upper layer substance is made at 145 DEG C after dry 6h
Obtain the second diatomite processed material；Wherein, the first diatomite processed material and the dosage of ethanol solution are：The anhydrous second of 100ml
5g the first diatomite processed materials are added in alcoholic solution；
（3）Second diatomite processed material is handled 3 hours under nitrogen protection effect at 280 DEG C, is obtained at third diatomite
Manage object；
（4）Third diatomite processed material is put into immersion treatment 25-30min in treatment fluid, during which heating keeps treatment fluid
Temperature is 75 DEG C, and product is repeatedly washed through filtering with distilled water, then is dried after filtering and obtain the 4th diatomite processed material；It is described
Each ingredient and its corresponding parts by weight are in treatment fluid：10 parts of nonylphenol polyoxyethylene ether, 5 parts of sodium thiosulfate, 55 parts of water；
（5）By the 4th diatomite processed material, distearyl acyl-oxygen aluminum isopropoxide acid esters and sodium chloride with mass ratio 98:1:1 input
In high-speed mixer, temperature is controlled at 80 DEG C, is stirred 45 minutes under conditions of 1000 revs/min, after the completion of stirring, is cooled to often
Temperature.
The preparation method of the modified pitch includes the following steps：
（1）Each raw material is weighed according to the ratio；（2）Matrix pitch is warming up to 190 DEG C, sequentially adds the composite modifier, table
Face activating agent, compatilizer stir evenly, swell 60 minutes, then use colloid mill high speed shear 4 times, are eventually adding above-mentioned chemistry
Auxiliary agent, high-speed stirred 4 hours to obtain the final product.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (9)
1. a kind of preparation method of the modified pitch of good combination property, is made of the raw material of following parts by weight：Matrix pitch 100
Part, 4-6 parts of composite modifier, 1.0-1.5 parts of compatilizer, 0.2-3 parts of surfactant, 1-2 parts of chemical assistant.
2. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that the matrix drip
Blueness is bi tumenf orr oad.
3. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that the surface-active
Agent is quaternary ammonium salt cationic surfactant.
4. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that the compatilizer is
Furfural extract oil.
5. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that the chemical assistant
By sulphur, methyl ethyl ketone and butyronitrile with mass ratio 56:20:15 mix.
6. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that described composite modified
Agent is by modified SBS powder, modification infusorial earth, RET asphalt modifiers according to weight ratio 2:1:1 mixes.
7. the preparation method of the modified pitch of good combination property as claimed in claim 6, which is characterized in that the modified SBS
The preparation method of powder is：Count in parts by weight, take 10 parts of SBS polymers, 0.05-0.08 parts of vinyltrimethoxysilanes,
1-1.7 parts of maleic anhydrides and 0.5-0.8 parts of methyl methacrylates are added in 15 parts of hexamethylenes, be then heated to 60-70 DEG C it is molten
Solution adds in the water that 50 parts of temperature are 68 DEG C with the rotating speed stirring and emulsifying of 2000r/min, with 300-500r/min's after emulsification
Rotating speed persistently stirs, and adds 0.01-0.012 parts of dibenzoyl peroxide reaction 1-1.5h, cools down after reaction, then mistake
Filter, filtration product is dry after acetone washs, and obtains modified SBS powder.
8. the preparation method of the modified pitch of good combination property as claimed in claim 6, which is characterized in that the modified diatom
Soil preparation method be：
（1）After being 30-120 μm at grain size by diatomite ball milling, obtained after processing 40-80min is fired at a temperature of 420-480 DEG C
To the first diatomite processed material；
（2）The mixed solution for the absolute ethyl alcohol that first diatomite processed material and mass concentration are 95% is put into glass container,
And glass container is placed in supersonic cleaning machine, under conditions of power 700-1000W, working frequency 28-40KHz at ultrasound
After managing 20-35min, uses aperture to be detached for 1-3 μm of filter paper, filter paper upper layer substance is obtained by filtration；By upper layer substance in 120-
The second diatomite processed material is made after dry 4-6h at 145 DEG C；Wherein, the use of the first diatomite processed material and ethanol solution
Amount is：2-5g the first diatomite processed materials are added in the ethanol solution of 100ml；
（3）Second diatomite processed material is handled 2-3 hours under nitrogen protection effect at 260-280 DEG C, third silicon is obtained
Diatomaceous earth processed material；
（4）Third diatomite processed material is put into immersion treatment 25-30min in treatment fluid, during which heating keeps treatment fluid
Temperature is 65-75 DEG C, and product is repeatedly washed through filtering with distilled water, then is dried after filtering and obtain the 4th diatomite processed material；Institute
Stating each ingredient and its corresponding parts by weight in treatment fluid is：7-10 parts of nonylphenol polyoxyethylene ether, 3-5 parts of sodium thiosulfate, 50-
55 parts of water；
（5）By the 4th diatomite processed material, distearyl acyl-oxygen aluminum isopropoxide acid esters and sodium chloride with mass ratio 96-98:1:1 throws
Enter in high-speed mixer, temperature is controlled at 60-80 DEG C, is stirred 30-45 minutes, is stirred under conditions of 600 revs/min -1000 revs/min
After the completion of mixing, it is cooled to room temperature.
9. the preparation method of the modified pitch of good combination property as described in claim 1, which is characterized in that the preparation method
Include the following steps：（1）Each raw material is weighed according to the ratio；（2）Matrix pitch is warming up to 170-190 DEG C, is sequentially added described
Composite modifier, surfactant, compatilizer stir evenly, swell 30-60 minutes, then use colloid mill high speed shear 2-4 times,
It is eventually adding above-mentioned chemical assistant, high-speed stirred 1-4 hours to obtain the final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292483.5A CN108440980A (en) | 2018-03-30 | 2018-03-30 | A kind of preparation method of the modified pitch of good combination property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736272A (en) * | 2021-09-04 | 2021-12-03 | 江苏蛙鸣建筑装饰科技有限公司 | High-temperature-resistant road asphalt and preparation method thereof |
| CN116041784A (en) * | 2022-10-28 | 2023-05-02 | 熙恒科技(常熟)有限公司 | Preparation method of environment-friendly flame-retardant warm mix agent for foam warm mix asphalt |
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| CN102408734A (en) * | 2011-10-11 | 2012-04-11 | 重庆市智翔铺道技术工程有限公司 | High-elastic modified asphalt and preparation method thereof |
| CN105315686A (en) * | 2015-12-09 | 2016-02-10 | 上海浦兴路桥建设工程有限公司 | High-viscosity modified asphalt and preparation method and application of high-viscosity modified asphalt |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102408734A (en) * | 2011-10-11 | 2012-04-11 | 重庆市智翔铺道技术工程有限公司 | High-elastic modified asphalt and preparation method thereof |
| CN105315686A (en) * | 2015-12-09 | 2016-02-10 | 上海浦兴路桥建设工程有限公司 | High-viscosity modified asphalt and preparation method and application of high-viscosity modified asphalt |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736272A (en) * | 2021-09-04 | 2021-12-03 | 江苏蛙鸣建筑装饰科技有限公司 | High-temperature-resistant road asphalt and preparation method thereof |
| CN116041784A (en) * | 2022-10-28 | 2023-05-02 | 熙恒科技(常熟)有限公司 | Preparation method of environment-friendly flame-retardant warm mix agent for foam warm mix asphalt |
| CN116041784B (en) * | 2022-10-28 | 2024-05-14 | 熙恒科技(常熟)有限公司 | Preparation method of environment-friendly flame-retardant warm mix agent for foam warm mix asphalt |
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Application publication date: 20180824 |