CN110003674A - A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt - Google Patents
A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt Download PDFInfo
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- CN110003674A CN110003674A CN201910355415.3A CN201910355415A CN110003674A CN 110003674 A CN110003674 A CN 110003674A CN 201910355415 A CN201910355415 A CN 201910355415A CN 110003674 A CN110003674 A CN 110003674A
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- Prior art keywords
- rubber powder
- polyphosphoric acids
- modified asphalt
- terminal blend
- compounding
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of preparation methods of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, the following steps are included: 1) vulcanized rubber powder prepares the preparation of 2) polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, select the technical grade polyphosphoric acids of concentration 115%, its technical requirements are as follows: coloration/black 20, P2O4>=83.5%, iron (Fe)≤0.001%, arsenide (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.The invention patent is compounded polyphosphoric acids with Terminal blend rubber powder modified asphalt by certain technique, the emphasis for making full use of Terminal blend rubber powder and PPA to improve pitch high temperature performance, the high temperature performance of bituminous cements is taken into account, realizes the two to the superposition of bituminous cements pavement performance improvement.This patent product reduces difficulty of construction, improves bituminous cements performance, reduce project cost, widely popularize and have great importance using rubber asphalt technology for improving rubber asphalt storage stability.
Description
Technical field
The invention belongs to modified asphalt technology field, in particular to a kind of polyphosphoric acids compounds Terminal blend rubber powder
The preparation method of modified pitch.
Background technique
Reliability (the carrying energy of asphalt pavement structure and material not only can be improved in the scientific application of rubber asphalt technology
Power and service life), the durability (high-temperature behavior, water stability and cracking resistance) of Pavement Condition, driver and passenger it is comfortable
Property (the submissive driving low noise of traveling, coefficient of friction are highly-safe greatly)；Waste tire resource be can also be achieved in highway engineering
Scale application, Planting Techniques, economy, the win-win situation of environmental benefit occupy important in the various methods of asphalt modification
Status.
However, traditional high-viscosity glue powder-modified asphalt adds storage stability since large viscosity, difficulty of construction are high
The limitation of the conditions such as difference, unsuitable long-distance transportation, affects the popularization and application of its large area.And Terminal blend rubber powder changes
Property pitch has the characteristics that low viscosity, rubber powder and pitch is miscible and evenly dispersed, storage stability is good, but since a large amount of rubber powders exist
It has occurred degradable in matrix pitch, causes the low temperature performance excellent of Terminal blend rubber powder modified asphalt, it is high temperatures
Can be poor, it cannot be used alone.And polyphosphoric acids (PPA) chemical modified bitumen has very excellent rutting resistance, resistance to old
Change ability, and help to improve the isolation problem generated since modified pitch standing time is long, construction workability,
It is a kind of material that can realize mutual supplement with each other's advantages with Terminal blend rubber powder modified asphalt, Terminal can be given full play to
The effect propety of blend rubber powder modified asphalt.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of polyphosphoric acids compounding Terminal blend rubber powder modified drip
Green preparation method, comprising the following steps:
1) prepared by vulcanized rubber powder
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: thin
Degree be 40 mesh~60 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=
30%, acetone extract≤20%, ash content < 8%；
2) preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: asphalitine 6%~15%, colloid 19%~39%, fragrance point 32%~60%,
The matrix pitch of saturation point 13%~31%, is heated to 180 DEG C~185 DEG C；
(2) waste rubber tyre powder that 8%~15% is added in the matrix pitch of Xiang Jiare, selects revolving speed < 1000r/min low speed
Stir 30min；
(3) 195 DEG C~205 DEG C are warming up to, uses high speed shear dispersing technology with 6000r/min≤revolving speed≤8000r/
Min shears 240min, fast after revolving speed is first slow, and 6000r/min is reached in 5min, cracks rubber powder completely；
(4) polyphosphoric acids of addition 1.5% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 20min；
(5) sulphur of addition 0.2% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 10min；
(6) modified pitch obtained above is placed in 180 DEG C~185 DEG C of environment and stands swelling 60min；
(7) test is by modified pitch made from above-mentioned technological parameter, make its 180 DEG C of Bush's viscosities 1.0~
Between 1.5Pas, waste rubber tyre powder volume is adjusted when undesirable；
This Bush's viscosity is the number returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds
According to.
Preferably, 180 DEG C of Bush's viscosities are 1.3Pas in step (7).
Preferably, the polyphosphoric acids technical requirements:
Select the technical grade polyphosphoric acids of concentration 115%, coloration/black 20, P2O4>=83.5%, Fe≤0.001%, arsenic
Object (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
The beneficial effect of this patent is the preparation of the polyphosphoric acids compounding Terminal blend rubber powder modified asphalt proposed
Rubber asphalt superior performance that method is produced by it, viscosity is low, storage stability is excellent, construction workability is good, engineering is made
Valence is low, turns waste into wealth and has recycled waste tire.It has given full play to rubber powder of waste tire and has improved service life of road surface, anti-ageing
Change, the effect for abrasion performance, reducing driving noise, improving road-ability, and patented product polyphosphoric acids compounds Terminal
Blend rubber powder modified asphalt mixture has the property of better antireflection cracking and fatigue cracking than dense-graded asphalt concrete
Can, pavement performance, environmental protection, in terms of relatively traditional rubber asphalt (AR series) have a clear superiority, for promoting rubber
The development and application of glue bitumen technology, solve waste tire pollution on the environment, and the regeneration of resource improves road surface
Service quality and service life promote the development of infrastructure construction high quality to have great importance.
Specific embodiment
The present invention provides a kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, including with
Lower step:
1. rubber powder of waste tire technical requirements
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: thin
Degree be 40 mesh~60 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=
30%, acetone extract≤20%, ash content < 8%.
2. polyphosphoric acids technical requirements
Select the technical grade polyphosphoric acids of concentration 115%, technical requirements are as follows: coloration/black 20, P2O4>=83.5%, iron
(Fe)≤0.001%, arsenide (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
3. the preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: asphalitine 6%~15%, colloid 19%~39%, fragrance point 32%~60%,
The matrix pitch of saturation point 13%~31%, is heated to 180 DEG C~185 DEG C；
(2) waste rubber tyre powder that 8%~15% is added in the matrix pitch of Xiang Jiare, stirs at low speed (revolving speed < 1000r/
min)30min；
(3) 195 DEG C~205 DEG C are warming up to, using high speed shear dispersing technology (6000r/min≤revolving speed≤8000r/
Min 240min (revolving speed is preferably first slow rear fast, and 6000r/min is reached in 5min)) is sheared, cracks rubber powder completely；
(4) 1.5% PPA, moderate-speed mixer (3000r/min≤revolving speed≤5000r/min) 20min are then added；
(5) 0.2% sulphur, moderate-speed mixer (3000r/min≤revolving speed≤5000r/min) 10min are then added；
(6) modified pitch obtained above is placed in 180 DEG C~185 DEG C of environment and stands swelling 60min；
(7) test is by modified pitch made from above-mentioned technological parameter, make its 180 DEG C of Bush's viscosities 1.0~
It between 1.5Pas, is controlled with 1.3Pas, waste rubber tyre powder volume is adjusted when undesirable.(explanation: this Bush's viscosity
It is the data returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds).
The invention patent is compounded polyphosphoric acids with Terminal blend rubber powder modified asphalt by certain technique, sufficiently
The emphasis improved using Terminal blend rubber powder and PPA to pitch high temperature performance, takes into account the height of bituminous cements
Warm nature energy realizes the two to the superposition of bituminous cements pavement performance improvement.This patent product is for improving rubber
Pitch storage stability reduces difficulty of construction, improves bituminous cements performance, reduces project cost, widelys popularize using rubber
Bitumen technology has great importance.
Embodiment 1
A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, comprising the following steps:
1) prepared by vulcanized rubber powder
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: thin
Degree is 40 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=30%, third
Ketone extract≤20%, ash content < 8%；
2) preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: the matrix drip of asphalitine 6%, colloid 39%, fragrance point 32%, saturation point 23%
Blueness is heated to 180 DEG C；
(2) waste rubber tyre powder that 8% is added in the matrix pitch of Xiang Jiare, selects revolving speed < 1000r/min to stir at low speed
30min；
(3) 195 DEG C are warming up to, uses high speed shear dispersing technology with 6000r/min≤revolving speed≤8000r/min shearing
240min, it is fast after revolving speed is first slow, 6000r/min is reached in 5min, cracks rubber powder completely；
(4) polyphosphoric acids of addition 1.5% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 20min；
(5) sulphur of addition 0.2% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 10min；
(6) modified pitch obtained above is placed in 180 DEG C of environment and stands swelling 60min；
(7) test is by modified pitch made from above-mentioned technological parameter, make its 180 DEG C of Bush's viscosities 1.0~
It between 1.5Pas, is controlled with 1.3Pas, waste rubber tyre powder volume is adjusted when undesirable；
This Bush's viscosity is the number returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds
According to.
The polyphosphoric acids technical requirements:
Select the technical grade polyphosphoric acids of concentration 115%, coloration/black 20, P2O4>=83.5%, Fe≤0.001%, arsenic
Object (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
Embodiment 2
A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, comprising the following steps:
1) prepared by vulcanized rubber powder
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: thin
Degree is 60 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=30%, third
Ketone extract≤20%, ash content < 8%；
2) preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: the matrix drip of asphalitine 13%, colloid 25%, fragrance point 45%, saturation point 17%
Blueness is heated to 183 DEG C；
(2) waste rubber tyre powder that 12% is added in the matrix pitch of Xiang Jiare, selects revolving speed < 1000r/min to stir at low speed
30min；
(3) 200 DEG C are warming up to, uses high speed shear dispersing technology with 6000r/min≤revolving speed≤8000r/min shearing
240min, it is fast after revolving speed is first slow, 6000r/min is reached in 5min, cracks rubber powder completely；
(4) polyphosphoric acids of addition 1.5% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 20min；
(5) sulphur of addition 0.2% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 10min；
(6) modified pitch obtained above is placed in 183 DEG C of environment and stands swelling 60min；
(7) test is by modified pitch made from above-mentioned technological parameter, make its 180 DEG C of Bush's viscosities 1.0~
It between 1.5Pas, is controlled with 1.3Pas, waste rubber tyre powder volume is adjusted when undesirable；
This Bush's viscosity is the number returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds
According to.
The polyphosphoric acids technical requirements:
Select the technical grade polyphosphoric acids of concentration 115%, coloration/black 20, P2O4>=83.5%, Fe≤0.001%, arsenic
Object (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
Embodiment 3
A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, comprising the following steps:
1) prepared by vulcanized rubber powder
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: thin
Degree is 60 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=30%, third
Ketone extract≤20%, ash content < 8%；
2) preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: the matrix drip of asphalitine 15%, colloid 28%, fragrance point 35%, saturation point 22%
Blueness is heated to 185 DEG C；
(2) waste rubber tyre powder that 15% is added in the matrix pitch of Xiang Jiare, selects revolving speed < 1000r/min to stir at low speed
30min；
(3) 205 DEG C are warming up to, uses high speed shear dispersing technology with 6000r/min≤revolving speed≤8000r/min shearing
240min, it is fast after revolving speed is first slow, 6000r/min is reached in 5min, cracks rubber powder completely；
(4) polyphosphoric acids of addition 1.5% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 20min；
(5) sulphur of addition 0.2% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 10min；
(6) modified pitch obtained above is placed in 185 DEG C of environment and stands swelling 60min；
(7) test is by modified pitch made from above-mentioned technological parameter, make its 180 DEG C of Bush's viscosities 1.0~
It between 1.5Pas, is controlled with 1.3Pas, waste rubber tyre powder volume is adjusted when undesirable；
This Bush's viscosity is the number returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds
According to.
The polyphosphoric acids technical requirements:
Select the technical grade polyphosphoric acids of concentration 115%, coloration/black 20, P2O4>=83.5%, Fe≤0.001%, arsenic
Object (in terms of As)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt, it is characterised in that: including with
Lower step:
1) prepared by vulcanized rubber powder
Waste tire selects heavy duty tire, is produced into vulcanized rubber powder, technical requirements using room temperature polishing are as follows: fineness is
40 mesh~60 mesh, tenor < 0.03%, fiber content < 0.05%, rubber hydrocarbon content >=50%, content of carbon black >=30%,
Acetone extract≤20%, ash content < 8%；
2) preparation of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt
(1) four component ratios are chosen are as follows: asphalitine 6%~15%, colloid 19%~39%, fragrance point 32%~60%, saturation
The matrix pitch for dividing 13%~31%, is heated to 180 DEG C~185 DEG C；
(2) waste rubber tyre powder that 8%~15% is added in the matrix pitch of Xiang Jiare, selects revolving speed < 1000r/min to stir at low speed
30min；
(3) 195 DEG C~205 DEG C are warming up to, high speed shear dispersing technology is used to cut with 6000r/min≤revolving speed≤8000r/min
240min is cut, it is fast after revolving speed is first slow, 6000r/min is reached in 5min, cracks rubber powder completely；
(4) polyphosphoric acids of addition 1.5% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 20min；
(5) sulphur of addition 0.2% selects 3000r/min≤revolving speed≤5000r/min moderate-speed mixer 10min；
(6) modified pitch obtained above is placed in 180 DEG C~185 DEG C of environment and stands swelling 60min；
(7) test makes its 180 DEG C of Bush's viscosities in 1.0~1.5Pas by modified pitch made from above-mentioned technological parameter
Between, waste rubber tyre powder volume is adjusted when undesirable；
This Bush's viscosity is the data returned by 50% torque by the viscosity of 5 kinds of measurement or more different rotating speeds.
2. a kind of preparation side of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt according to claim 1
Method, it is characterised in that: 180 DEG C of Bush's viscosities are 1.3Pas in step (7).
3. a kind of preparation side of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt according to claim 1
Method, it is characterised in that:
The polyphosphoric acids technical requirements:
Select the technical grade polyphosphoric acids of concentration 115%, coloration/black 20, P2O4>=83.5%, Fe≤0.001%, arsenide (with
As meter)≤0.005%, heavy metal (in terms of Pb)≤0.001%.
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| CN201910355415.3A CN110003674A (en) | 2019-04-29 | 2019-04-29 | A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt |
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| CN201910355415.3A CN110003674A (en) | 2019-04-29 | 2019-04-29 | A kind of preparation method of polyphosphoric acids compounding Terminal blend rubber powder modified asphalt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022266733A1 (en) * | 2021-06-25 | 2022-12-29 | Cbb Industria E Comercio De Asfaltos E Engenharia Ltda | Process for obtaining an asphalt binder modified with waste tyre rubber powder |
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