CN105778530A - SBS-rubber composite modified asphalt and preparation method thereof - Google Patents
SBS-rubber composite modified asphalt and preparation method thereof Download PDFInfo
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- CN105778530A CN105778530A CN201610143011.4A CN201610143011A CN105778530A CN 105778530 A CN105778530 A CN 105778530A CN 201610143011 A CN201610143011 A CN 201610143011A CN 105778530 A CN105778530 A CN 105778530A
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- sbs
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- tire rubber
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 181
- 239000005060 rubber Substances 0.000 title claims abstract description 181
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000010426 asphalt Substances 0.000 title abstract description 41
- 239000011159 matrix material Substances 0.000 claims abstract description 89
- 239000010920 waste tyre Substances 0.000 claims abstract description 89
- 239000008187 granular material Substances 0.000 claims abstract description 64
- 239000012190 activator Substances 0.000 claims abstract description 31
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000012943 hotmelt Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 53
- 239000002245 particle Substances 0.000 claims description 22
- 230000008929 regeneration Effects 0.000 claims description 20
- 238000011069 regeneration method Methods 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 9
- 239000011593 sulfur Substances 0.000 claims description 9
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 239000011297 pine tar Substances 0.000 claims description 8
- 229940068124 pine tar Drugs 0.000 claims description 8
- 239000003784 tall oil Substances 0.000 claims description 8
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000011280 coal tar Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims 2
- 239000002994 raw material Substances 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000011295 pitch Substances 0.000 description 131
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 239000000843 powder Substances 0.000 description 12
- 239000002699 waste material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229920002209 Crumb rubber Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 2
- 229960002447 thiram Drugs 0.000 description 2
- DHKVCYCWBUNNQH-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(1,4,5,7-tetrahydropyrazolo[3,4-c]pyridin-6-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)C=NN2 DHKVCYCWBUNNQH-UHFFFAOYSA-N 0.000 description 1
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Natural products C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- FHKPLLOSJHHKNU-INIZCTEOSA-N [(3S)-3-[8-(1-ethyl-5-methylpyrazol-4-yl)-9-methylpurin-6-yl]oxypyrrolidin-1-yl]-(oxan-4-yl)methanone Chemical compound C(C)N1N=CC(=C1C)C=1N(C2=NC=NC(=C2N=1)O[C@@H]1CN(CC1)C(=O)C1CCOCC1)C FHKPLLOSJHHKNU-INIZCTEOSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to SBS-rubber composite modified asphalt and a preparation method thereof. The asphalt is prepared from matrix asphalt, SBS, an auxiliary component, namely naphthenic oil, waste tire rubber granules, an activator T2, and a cross-linking agent T4, wherein the mass ratio of the waste tire rubber granules to the matrix asphalt is 1:(2-6), the SBS accounts for 0.5%-3% of the total mass of the waste tire rubber granules and the matrix asphalt, the auxiliary component, namely naphthenic oil accounts for 0.25%-1% of the total mass of the waste tire rubber granules and the matrix asphalt, the activator T2 accounts for 5%-10% of the total mass of the waste tire rubber granules and the matrix asphalt, and the cross-linking agent T4 accounts for 0.04%-0.08% of the total mass of the waste tire rubber granules and the matrix asphalt. The preparation method of the asphalt comprises the following steps: mixing hot-melt asphalt of 160-180 DEG C with the SBS and the naphthenic oil, stirring under 170-180 DEG C for 15-20 minutes, then adding the waste tire rubber granules and the activator T2, stirring under 180-190 DEG C for 40-50 minutes, then adding the cross-linking agent T4, maintaining the temperature to be 185-200 DEG C, performing high-speed shearing for 1-2 minutes, and finally, stirring for 10-20 minutes so as to prepare the SBS-rubber composite modified asphalt which is low in cost, low in energy consumption, pollution-free, high in performance, and high in storing stability.
Description
Technical field
The invention belongs to asphalt and processing preparing technical field thereof, be specifically related to a kind of SBS-rubber composite modified pitch and
Preparation method.
Background technology
Styrene butadiene triblock copolymer (SBS) has excellent hot strength, and cryogenic property is good, changes as pitch
High temperature performance and the resistance load performance of pitch is may significantly improve during property agent.But SBS price is high, a large amount of SBS of use make
For modifying agent high cost.
Rubber modified asphalt cost is relatively low, utilizes rubber modified asphalt, it is possible to increase the softening point of pitch, strengthens pitch resilience
Property.Junked tire is that industrial sharply increasing but is difficult to recycle " black pollution ", and its main component is rubber, therefore
Reclaim junked tire and carry out rubber modified asphalt, promote refuse reclamation, can reach environmental protection and resources conservation purpose.
But, in matrix pitch, swelling dissolving is incomplete, system viscosity is high for rubber powder, there is constructional difficulties, storage and transport process
Easily there is the problems such as isolation.The General Purpose Rubber pitch applicable time is short, must use producing in 12 hours, otherwise occur precipitation from
Analysis or rubber powder react completely, it is impossible to reach modified effect.
Patent CN101555354B discloses the preparation method of a kind of Crumber rubber modified asphalt, can prepare pollution-free, cost performance
High scrap rubber pitch, but rubber powder used by it is not entirely waste Crumb rubber, and waste Crumb rubber accounts for the half of rubber powder total amount,
Therefore produce this type pitch and still need to purchase new rubber powder, therefore improve cost.Additionally, its Crumber rubber modified asphalt provided
Middle rubber content is low, therefore can not effectively utilize scrap rubber, and refuse reclamation efficiency is low.And its needle penetration is for its technology
Index Design, is unsatisfactory for " Beijing's waste rubber tyre powder pitch and asphalt mixture design construction technology guide " requirement, it is impossible to raw in Beijing
Produce and use.
Patent CN 105176115A discloses a kind of SBS rubber powder composite modified asphalt and preparation method thereof, can prepare bright
The aobvious modified pitch improving pavement quality.But, its preparation method provided must be 180 DEG C of high speed shear 2h, to equipment requirement
High and expend big energy.
Summary of the invention
In order to solve problem of the prior art, the present invention provides a kind of novel SBS-rubber composite modified pitch and preparation side thereof
Method.
The present invention is by the following technical solutions:
A kind of SBS-rubber composite modified pitch, by matrix pitch, SBS, auxiliary element naphthenic oil, scrap tire rubber particle,
Activator T2, crosslinking agent T4 make, the mass ratio of scrap tire rubber particle and matrix pitch be 1:2-6, SBS consumption be useless
Old tire rubber grain and matrix pitch quality and 0.5%-3%, auxiliary element naphthenic oil consumption be waste tire rubber granule with
The 0.25%-1% of matrix pitch quality sum, activator T2 consumption be waste tire rubber granule with matrix pitch quality and
5%-10%, crosslinking agent T4 consumption be waste tire rubber granule with matrix pitch quality and 0.04%-0.08%.
Preferably, matrix pitch described in such scheme is selected from No. 50 A levels of bi tumenf orr oad, bi tumenf orr oad 70
Any one in number A level, No. 90 A levels of bi tumenf orr oad and No. 110 A levels of bi tumenf orr oad.
In any of the above-described scheme preferably, described auxiliary element naphthenic oil can promote SBS dispersion in pitch, and soft
Change rubber grain, any one in aromatic naphtha, pine tar, tall oil, coal tar.
In any of the above-described scheme preferably, described activator T2, for rubber macromolecule depolymerization desulfurization, selected from living again
Any one in agent 463,901,703.
In any of the above-described scheme preferably, described crosslinking agent T4, cross-link for rubber molecule grafting, selected from crosslinking agent
Any one in TAIC, insoluble sulfur or sulfide.
In any of the above-described scheme preferably, described scrap tire rubber particle is 1:3-5 with the mass ratio of matrix pitch.
In any of the above-described scheme preferably, described SBS consumption be waste tire rubber granule with matrix pitch quality and
1%-2.5%.
In any of the above-described scheme preferably, described SBS consumption be waste tire rubber granule with matrix pitch quality and
1.5%-2.5%.
In any of the above-described scheme preferably, described SBS consumption be waste tire rubber granule with matrix pitch quality and
1.5%-2%.
In any of the above-described scheme preferably, described auxiliary element naphthenic oil consumption is that waste tire rubber granule drips with matrix
The 0.3%-0.5% of blue or green quality sum.
In any of the above-described scheme preferably, described auxiliary element naphthenic oil consumption is that waste tire rubber granule drips with matrix
The 0.5%-0.9% of blue or green quality sum.
In any of the above-described scheme preferably, described activator T2 consumption is waste tire rubber granule and matrix pitch matter
The 6%-9% of amount sum.
In any of the above-described scheme preferably, described activator T2 consumption is waste tire rubber granule and matrix pitch matter
The 7%-8% of amount sum.
In any of the above-described scheme preferably, described crosslinking agent T4 consumption is waste tire rubber granule and matrix pitch matter
The 0.05%-0.07% of amount sum.
In any of the above-described scheme preferably, described crosslinking agent T4 consumption is waste tire rubber granule and matrix pitch matter
The 0.06% of amount sum.
The present invention provides the preparation method of a kind of SBS-rubber composite modified pitch, and its step is as follows:
(1) hot melt matrix pitch is heated to mixing and stirring temperature 160 DEG C-180 DEG C, adds SBS and auxiliary element naphthenic oil,
Lower stirring 15-20 minute at 170 DEG C-180 DEG C；
(2) gained mixture adds in (1) waste tire rubber granule of 40-60 mesh；
(3) in (2) gained mixture, activator T2 is added；
(4) (3) gained mixture is being stirred 40-50 minute at 180 DEG C-190 DEG C；
(5) adding crosslinking agent T4, temperature carries out high speed shear with 6000-12000rpm while of being maintained at 180 DEG C-200 DEG C
1-3 minute；
(6) (5) gained mixture is stirred 10-20 minute, obtain SBS-rubber composite modified pitch.
The place of production, producer and performance reasonable set temperature, time, shear rate according to matrix pitch in such scheme.
Preferably, mixing and stirring temperature and be 165-175 DEG C described in step (1), whipping temp is 175-180 DEG C, during stirring
Between 15 minutes.
In any of the above-described scheme preferably, described in step (2), waste tire rubber granule particle diameter is 40-55 mesh.
In any of the above-described scheme preferably, described in step (2), waste tire rubber granule particle diameter is 50-55 mesh.
In any of the above-described scheme preferably, described in step (2), waste tire rubber granule particle diameter is 45-50 mesh.
In any of the above-described scheme preferably, in step (4), temperature is 180 DEG C-185 DEG C.
In any of the above-described scheme preferably, in step (4), the time is 45-50 minute.
In any of the above-described scheme preferably, step (5) medium speed is 7000-11000rpm.More preferably, above-mentioned
In either a program, step (5) medium speed is 8000-10000rpm, more preferably, in any of the above-described scheme in step (5)
Rotating speed is 9000rpm.
In any of the above-described scheme preferably, in step (5), shear time is 1.5-2 minute.
In any of the above-described scheme preferably, in step (5), temperature is 185 DEG C-195 DEG C.
In any of the above-described scheme preferably, in step (6), mixing time is 10-15 minute.
The SBS-rubber modified asphalt that the present invention provides can prepare by the preparation method of the present invention.
Compared with prior art, the invention have the advantages that
The preparation method that the present invention provides, adds waste rubber grain in the co-mixing system with matrix pitch as decentralized medium, logical
Too high gentle high shear forces carries out swelling, inserts a series of auxiliary agent simultaneously and makes this system there is a depolymerization and the mistake cross-linked again
Journey, ultimately forms rubber asphalt central elastic system.What in this system, shoddy particle was more uniform, stable is dispersed in pitch Jie
In matter, compare common rubber asphalt and have better storage stability and ageing resistace, can be as road surface binding material system
Standby compound, reduces production cost, and the road surface of made compound making has good water resistant and damages and the deformation of anti-high and low temperature
Ability, has noise reduction effect simultaneously, improves the comfort level of traveling.
The preparation method that the present invention provides, uses a large amount of waste old, and salvage value is high；Preparation method is simple, cuts at a high speed
Time of cutting is short, time-saving energy-saving.
The SBS-rubber composite modified pitch that the present invention provides, meets " Beijing's waste rubber tyre powder pitch and asphalt mixture design construction
Technical manual ", can be at Beijing production and application.
The SBS-rubber composite modified pitch that the present invention provides, it is adaptable to cold mixing cold laid asphaltic compound.
The SBS-rubber composite modified pitch that the present invention provides, can overcome the problem that the existing rubber asphalt applicable time is short: existing
Rubber asphalt must use in producing 12 hours, otherwise occurs precipitation isolation or rubber powder to react completely, it is impossible to play modified effect
Really.And the SBS-rubber composite modified pitch applicable time of the present invention can reach 10-14 days in a heated state, the state of cooling
Applicable time is longer.
Detailed description of the invention
In order to further appreciate that the present invention, being described in more detail the present invention below in conjunction with specific embodiment, embodiment is only
The present invention is had exemplary effect, and not there is any restrictive effect；Any those skilled in the art are at the base of the present invention
The insubstantial modifications made on plinth, all should belong to the scope of protection of the invention.
Insoluble sulfur used by the present invention is bought from Wuxi Huasheng Rubber Technical Co., Ltd., crosslinking agent TAIC
Buying from new material Science and Technology Ltd. of upper Hayden U.S., regeneration activator, naphthenic oil are bought from the Anhui will one rubber limited public affairs of science and technology
Department.
Embodiment 1
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 70 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:4, SBS consumption be waste tire rubber granule with matrix pitch quality and 2%, auxiliary element aromatic naphtha is used
Amount for waste tire rubber granule and matrix pitch quality and 0.25%, regeneration activator 463 consumption is waste tire rubber
Grain and matrix pitch quality and 5%, crosslinking agent TAIC consumption be waste tire rubber granule and matrix pitch quality and
0.04%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) to by 160 DEG C of hot melt matrix pitches add SBS and auxiliary element aromatic naphtha, at 170 DEG C, 15 points are stirred
Clock；
(2) gained mixture adds in (1) waste tire rubber granule of 45-55 mesh；
(3) in (2) gained mixture, regeneration activator 463 is added；
(4) (3) gained mixture is being stirred 40 minutes at 180 DEG C；
(5) add crosslinking agent TAIC, the while that temperature being 185 DEG C-190 DEG C, carry out high speed shear 1 minute with 10000rpm；
(6) (5) gained mixture is stirred 20 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 2
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 70 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:4, SBS consumption be waste tire rubber granule with matrix pitch quality and 1%, auxiliary element pine tar is used
Amount for waste tire rubber granule and matrix pitch quality and 1%, regeneration activator 901 consumption is waste tire rubber granule
With matrix pitch quality and 5%, crosslinking agent TAIC consumption be waste tire rubber granule with matrix pitch quality and
0.08%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) to by 165 DEG C of hot melt matrix pitches add SBS and auxiliary element pine tar, at 180 DEG C, 20 points are stirred
Clock；
(2) gained mixture adds in (1) waste tire rubber granule of 45-55 mesh；
(3) in (2) gained mixture, regeneration activator 901 is added；
(4) (3) gained mixture is being stirred 40 minutes at 190 DEG C；
(5) add crosslinking agent TAIC, the while that temperature being 185 DEG C-190 DEG C, carry out high speed shear 1 minute with 9900rpm；
(6) (5) gained mixture is stirred 10 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 3
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 70 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:3, SBS consumption be waste tire rubber granule with matrix pitch quality and 1.5%, auxiliary element tall oil is used
Amount for waste tire rubber granule and matrix pitch quality and 0.4%, regeneration activator 703 consumption is waste tire rubber
Grain and matrix pitch quality and 8%, insoluble sulfur consumption be waste tire rubber granule and matrix pitch quality and
0.05%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) to by 170 DEG C of hot melt matrix pitches add SBS and auxiliary element tall oil, at 170 DEG C, 15 points are stirred
Clock；
(2) gained mixture adds in (1) waste tire rubber granule of 40-50 mesh；
(3) in (2) gained mixture, regeneration activator 703 is added；
(4) (3) gained mixture is being stirred 45 minutes at 185 DEG C；
(5) add insoluble sulfur, the while that temperature being 190 DEG C-195 DEG C, carry out high speed shear 3 minutes with 8000rpm；
(6) (5) gained mixture is stirred 20 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 4
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 110 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:2, SBS consumption be waste tire rubber granule with matrix pitch quality and 3%, auxiliary element coal tar
Consumption be waste tire rubber granule with matrix pitch quality and 0.5%, regeneration activator 703 consumption is waste tire rubber
Particle and matrix pitch quality and 6%, crosslinking agent TAIC consumption be waste tire rubber granule with matrix pitch quality and
0.06%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) in 175 DEG C of hot melt matrix pitches, add SBS and auxiliary element coal tar, stir 16 minutes at 175 DEG C；
(2) gained mixture adds in (1) waste tire rubber granule of 40-60 mesh；
(3) in (2) gained mixture, regeneration activator 703 is added；
(4) (3) gained mixture is being stirred 50 minutes at 182 DEG C；
(5) add sulphur, the while that temperature being 195 DEG C-200 DEG C, carry out high speed shear 3 minutes with 6000rpm；
(6) (5) gained mixture is stirred 15 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 5
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 50 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:6, SBS consumption be waste tire rubber granule with matrix pitch quality and 0.5%, auxiliary element aromatic naphtha is used
Amount for waste tire rubber granule and matrix pitch quality and 0.6%, regeneration activator 463 consumption is waste tire rubber
Grain with matrix pitch quality and 7%, sulfide (tetramethylthiuram disulfide) consumption is waste tire rubber granule and base
The 0.07% of matter asphalt quality sum.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) in 180 DEG C of hot melt matrix pitches, SBS and auxiliary element aromatic naphtha, pine tar mixture are added, at 180 DEG C
Stir 17 minutes；
(2) gained mixture adds in (1) waste tire rubber granule of 40-50 mesh；
(3) in (2) gained mixture, regeneration activator 703 is added；
(4) (3) gained mixture is being stirred 42 minutes at 187 DEG C；
(5) add tetramethylthiuram disulfide, the while that temperature being 190 DEG C-195 DEG C, carry out high speed shear 2 with 7000rpm
Minute；
(6) (5) gained mixture is stirred 13 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 6
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 70 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:5, SBS consumption be waste tire rubber granule with matrix pitch quality and 2.5%, auxiliary element tall oil is used
Amount for waste tire rubber granule and matrix pitch quality and 0.7%, regeneration activator 901 consumption is waste tire rubber
Grain with matrix pitch quality and 9%, sulfide DTDM (4', 4-dithio morpholine) consumption is waste tire rubber granule
With matrix pitch quality and 0.05%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) to by hot melt matrix pitch adds SBS and auxiliary element tall oil, stir 15 minutes at 170 DEG C；
(2) gained mixture adds in (1) waste tire rubber granule of 40-50 mesh；
(3) in (2) gained mixture, regeneration activator 901 is added；
(4) (3) gained mixture is being stirred 45 minutes at 185 DEG C；
(5) add sulfide, the while that temperature being 190 DEG C-195 DEG C, carry out high speed shear 1.5 minutes with 9000rpm；
(6) (5) gained mixture is stirred 18 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 7
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 90 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:4.5, SBS consumption be waste tire rubber granule with matrix pitch quality and 1.5%, auxiliary element aromatic naphtha
Consumption be waste tire rubber granule with matrix pitch quality and 0.8%, regeneration activator 703 consumption is waste tire rubber
Particle and matrix pitch quality and 8%, insoluble sulfur consumption be waste tire rubber granule with matrix pitch quality and
0.05%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) in 175 DEG C of hot melt matrix pitches, add SBS and auxiliary element tall oil, stir 15 minutes at 170 DEG C；
(2) gained mixture adds in (1) waste tire rubber granule of 45-60 mesh；
(3) in (2) gained mixture, regeneration activator 703 is added；
(4) (3) gained mixture is being stirred 45 minutes at 185 DEG C；
(5) add insoluble sulfur, the while that temperature being 190 DEG C-195 DEG C, carry out high speed shear 2.5 minutes with 8500rpm；
(6) (5) gained mixture is stirred 15 minutes, obtain SBS-rubber composite modified pitch.
Embodiment 8
A kind of SBS-rubber composite modified pitch, scrap tire rubber particle and No. 90 A grade matrix pitches of bi tumenf orr oad
Mass ratio be 1:5.5, SBS consumption be waste tire rubber granule with matrix pitch quality and 2%, auxiliary element pine tar is used
Amount for waste tire rubber granule and matrix pitch quality and 0.4%, regeneration activator 703 consumption is waste tire rubber
Grain and matrix pitch quality and 8%, insoluble sulfur consumption be waste tire rubber granule and matrix pitch quality and
0.05%.
In the present embodiment, the preparation method of SBS-rubber composite modified pitch is:
(1) in 165 DEG C of hot melt matrix pitches, SBS and auxiliary element pine tar, tall oil mixture are added, at 170 DEG C
Lower stirring 15 minutes；
(2) gained mixture adds in (1) waste tire rubber granule of 40-50 mesh；
(3) in (2) gained mixture, regeneration activator 703 is added；
(4) (3) gained mixture is being stirred 45 minutes at 185 DEG C；
(5) add insoluble sulfur, the while that temperature being 190 DEG C-195 DEG C, carry out high speed shear 3 minutes with 11000rpm；
(6) (5) gained mixture is stirred 20 minutes, obtain SBS-rubber composite modified pitch.
Comparative example 1:
Scrap tire rubber is 1:1 with the mass ratio of matrix pitch
| Composition | SBS | Aromatic naphtha | Regeneration activator 463 | Crosslinking agent TAIC |
| Consumption | 0.4% | 0.2% | 12% | 1% |
Preparation method is identical with preparation method in embodiment 1.
Comparative example 2
Scrap tire rubber is 1:7 with the mass ratio of matrix pitch
| Composition | SBS | Pine tar | Regeneration activator 901 | Crosslinking agent TAIC |
| Consumption | 0.1% | 2% | 13 | 0.02 |
Preparation method is identical with embodiment 2 preparation method.
Comparative example 3
It is in its preparation process with embodiment 3 difference: in step (1), and temperature is 150 DEG C, and whipping temp is 160 DEG C,
Mixing time 20 minutes.In step (2), add 30 mesh waste tire rubber granules.
Comparative example 4
It is in its preparation process with embodiment 4 difference: in step (2), entering waste tire rubber granule is 80 mesh.Step
Suddenly in (4), whipping temp is 200 DEG C, and mixing time is 1.5 hours.
Comparative example 5
75g matrix pitch is heated to 160-180 DEG C, adds furfural extract oil 0.1g, stir, continuously add SBS3.2g,
30-220 mesh waste Crumb rubber 0.5g, potter's clay 0.2g, stir 40 minutes with 3000 revs/min, adds Cosan 0.1g in whipping process.
Then stir 200 minutes with 300 revs/min, prepare pitch.
Comparative example 6
Being the SBS of 10% by percentage by weight, the 40 above rubber powders of mesh of 80%, 10% polyethylene is at 10-400 rev/min
Under be uniformly mixing to obtain composite modifier.Joining in No. 90 heavy traffic paving asphalts of 160 DEG C, composite modifier accounts for the 6% of gross weight.
Then 4000 revs/min of lower high speed shear 15 minutes.Add titanate ester stabilizer, at 160-180 DEG C, continue shearing 25
Minute prepared pitch.
By SBS-rubber composite modified pitch prepared by the embodiment of the present invention and the fitting at 180 DEG C of the pitch prepared by comparative example
It is shown in Table 1 with the time.
Table 1 pitch applicable time table
| Product | Applicable time |
| Comparative example 1 | 12 hours |
| Comparative example 2 | 8 hours |
| Comparative example 3 | 10 hours |
| Comparative example 4 | 11 hours |
| Comparative example 5 | 10 hours |
| Comparative example 6 | 12 hours |
| Embodiment 1 | 10 days |
| Embodiment 2 | 10 days |
| Embodiment 3 | 12 days |
| Embodiment 4 | 11 days |
| Embodiment 5 | 13 days |
| Embodiment 6 | 14 days |
| Embodiment 7 | 12 days |
| Embodiment 8 | 14 days |
By No. 70 A levels of SBS-rubber composite modified pitch prepared by the embodiment of the present invention and bi tumenf orr oad (" stone in table
Oil asphalt "), General Purpose Rubber performance of modified bitumen (), " Beijing's waste rubber tyre powder pitch and asphalt mixture design are executed in table " commonly "
Work technical manual " (" technical manual " in table) be listed in table 2, and wherein after embodiment, data are the ratio of rubber and matrix pitch.
From table 1, the present invention has good modifying function for No. 70 A levels of ordinary road asphalt, and each index is by bright
Aobvious lifting, complies fully with all standard of " Beijing's waste rubber tyre powder pitch and the technical manual of asphalt mixture design construction ".With
Common rubber modified asphalt is compared, and the SBS-rubber chemistry composite modified asphalt that the present invention produces is anti-aging in viscosity, short-term
Performance, high-temperature storage stability have obvious technical advantage.
Table 2 product performance index contrast table
By No. 70 A levels of SBS-rubber composite modified pitch prepared by the embodiment of the present invention and bi tumenf orr oad (" stone in table
Oil asphalt "), General Purpose Rubber modified pitch () in table " commonly " carry out mix proportion design respectively, select same level
In the case of joining and using oil mass, evaluate and use the different pitches impact on bituminous concrete mixture performance.
Specifically carry out according to the serial of methods in JTGE20-2011 " highway engineering pitch and Asphalt Mixture Experiment code "
Test.T0702 2011 asphalt preparation method (compacting process) makes Marshall Test, drips according to T0709 2011
Blue or green compound Marshall Test is tested；Asphalt indirect tensile test on frozen-thaw is carried out, test according to T0729 2000 method
Temperature is-18 DEG C, and loading speed is 50mm/min；Make wheel tracking test test block according to the rolling legal system in T0719 2011 to go forward side by side
Row asphalt mixture in track test；Make wheel tracking test test block according to the rolling legal system in T0719 2011, test block is cut into
Long 250mm ± 2.0mm, wide 30mm ± 2.0mm, the rhombus pillar of high 35 ± 2.0mm, then according to T0715 2011
Method carries out asphalt bend test, and test temperature is-18 DEG C, and loading speed is 50mm/min, test data such as table 3.
Table 3 pitch comprehensive performance evaluation
As can be seen from Table 2, SBS-rubber chemistry composite modified asphalt mixture is relative to matrix pitch and General Purpose Rubber pitch
Compound has higher high and low temperature performance, and its indices complies fully with technical standard, and application prospect is extensive.
Claims (10)
1. a SBS-rubber composite modified pitch, its raw material includes matrix pitch, SBS, scrap tire rubber particle, activator T2, crosslinking agent T4, it is characterized in that: also include auxiliary element naphthenic oil, described scrap tire rubber particle is 1:2-6 with the mass ratio of matrix pitch, SBS consumption be waste tire rubber granule with matrix pitch quality and 0.5%-3%, auxiliary element naphthenic oil consumption be waste tire rubber granule with matrix pitch quality and 0.25%-1%, activator T2 consumption be waste tire rubber granule with matrix pitch quality and 5%-10%, crosslinking agent T4 consumption be waste tire rubber granule with matrix pitch quality and 0.04%-0.08%.
2. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: described matrix pitch is selected from any one in No. 50 A levels of bi tumenf orr oad, No. 70 A levels of bi tumenf orr oad, No. 90 A levels of bi tumenf orr oad and No. 110 A levels of bi tumenf orr oad.
3. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: described auxiliary element naphthenic oil is selected from any one in aromatic naphtha, pine tar, tall oil, coal tar.
4. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: described activating agent T2 is selected from any one in regeneration activator 463,901,703.
5. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: described crosslinking agent T4 is selected from any one of crosslinking agent TAIC, insoluble sulfur or sulfide.
6. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: the particle diameter of described scrap tire rubber is 40-55 mesh.
7. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: the particle diameter of described scrap tire rubber is 45-50 mesh.
8. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: described scrap tire rubber particle is 1:3-5 with the mass ratio of matrix pitch.
9. SBS-rubber composite modified pitch as claimed in claim 1, it is characterised in that: SBS consumption be waste tire rubber granule with matrix pitch quality and 1%-2.5%.
10. the preparation method of SBS-rubber composite modified pitch as claimed in any one of claims 1-9 wherein, comprises the following steps:
(1) hot melt matrix pitch is heated to mixing and stirring temperature, adds SBS and auxiliary element naphthenic oil, and be stirred；
(2) gained mixture adds in (1) waste tire rubber granule；
(3) in (2) gained mixture, activating agent T2 is added；
(4) (3) gained mixture is stirred；
(5) add crosslinking agent T4, carry out high speed shear simultaneously；
(6) continue stirring (5) gained mixture, obtain SBS-rubber composite modified pitch.
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| CN111117267A (en) * | 2019-12-23 | 2020-05-08 | 上海浦东路桥沥青材料有限公司 | Compound modified asphalt, preparation method and application |
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