CN105778530B - A kind of SBS- rubber composite modified pitch and preparation method thereof - Google Patents
A kind of SBS- rubber composite modified pitch and preparation method thereof Download PDFInfo
- Publication number
- CN105778530B CN105778530B CN201610143011.4A CN201610143011A CN105778530B CN 105778530 B CN105778530 B CN 105778530B CN 201610143011 A CN201610143011 A CN 201610143011A CN 105778530 B CN105778530 B CN 105778530B
- Authority
- CN
- China
- Prior art keywords
- sbs
- pitch
- composite modified
- rubber
- rubber composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 204
- 239000005060 rubber Substances 0.000 title claims abstract description 204
- 239000002131 composite material Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 239000011159 matrix material Substances 0.000 claims abstract description 93
- 239000010920 waste tyre Substances 0.000 claims abstract description 93
- 239000008187 granular material Substances 0.000 claims abstract description 59
- 239000012190 activator Substances 0.000 claims abstract description 32
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000012943 hotmelt Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 61
- 239000010426 asphalt Substances 0.000 claims description 30
- 239000003921 oil Substances 0.000 claims description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 12
- 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
- 238000002156 mixing Methods 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
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 5
- 239000011280 coal tar Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims 3
- 230000004913 activation Effects 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000011295 pitch Substances 0.000 description 131
- 230000008929 regeneration Effects 0.000 description 20
- 238000011069 regeneration method Methods 0.000 description 20
- 239000000843 powder Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 239000002699 waste material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 125000003118 aryl group Chemical group 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920002209 Crumb rubber Polymers 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 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
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000005096 rolling process Methods 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
- 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
- 150000004945 aromatic hydrocarbons Chemical class 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
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation 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
- 230000001568 sexual effect 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 present invention relates to a kind of SBS- rubber composite modified pitch and preparation method thereof.The pitch is made of matrix pitch, SBS, auxiliary element naphthenic oil, scrap tire rubber particle, activator T2, crosslinking agent T4, the mass ratio of scrap tire rubber particle and matrix pitch is 1:2-6, SBS, auxiliary element naphthenic oil, activator T2, crosslinking agent T4 dosage be respectively waste tire rubber granule and matrix pitch quality and 0.5%-3%, 0.25%-1%, 5%-10%, 0.04%-0.08%.The preparation method of the pitch is to mix 160 DEG C of -180 DEG C of hot-melt asphalts with SBS and naphthenic oil, 170 DEG C -180 DEG C of stirrings 15-20 minutes, then waste tire rubber granule, activator T2 is added, and 180 DEG C -190 DEG C of stirrings 40-50 minutes, then crosslinking agent T4 is added, temperature maintains at 185 DEG C -200 DEG C high speed shear 1-2 minutes, finally stir prepare within 10-20 minutes low cost, low energy consumption, pollution-free, high-performance, high storage stability SBS- rubber composite modified pitch.
Description
Technical field
The invention belongs to asphalt and its processing preparation technical fields, and in particular to a kind of SBS- rubber composite modified pitch
And preparation method thereof.
Background technique
Styrene butadiene triblock copolymer (SBS) has excellent tensile strength, and low temperature performance well changes as pitch
It may significantly improve the high temperature performance and resistance load performance of pitch when property agent.However SBS is at high price, largely use SBS as
Modifying agent cost is excessively high.
Cost is relatively low for rubber modified asphalt, using rubber modified asphalt, can be improved the softening point of pitch, enhancing pitch returns
Elasticity.Waste tire is industrially to sharply increase " black pollution " for being but difficult to be recycled, and main component is rubber, therefore
It recycles waste tire and carries out rubber modified asphalt, promote refuse reclamation, can reach environmental protection and resource-effective purpose.
However, rubber powder is swollen in matrix pitch, dissolution is incomplete, system viscosity is high, and there are constructional difficulties, storage and transportation
The problems such as Cheng Yi is isolated.The General Purpose Rubber pitch applicable time is short, must production 12 hours in use, otherwise occur precipitating from
Analysis or rubber powder react completely, are unable to reach modified effect.
Patent CN101555354B discloses a kind of preparation method of Crumber rubber modified asphalt, and pollution-free, sexual valence can be made
Than high scrap rubber pitch, but it is entirely waste Crumb rubber that its rubber powder used, which is not, and waste Crumb rubber accounts for about the one of rubber powder total amount
Half, therefore produce this type pitch and still need to purchase new rubber powder, therefore improve cost.In addition, its scrap rubber provided is modified
Rubber content is low in pitch, therefore cannot efficiently use scrap rubber, refuse reclamation low efficiency.And its needle penetration is for it
Technical indicator design is unsatisfactory for " Beijing's waste rubber tyre powder pitch and asphalt mixture design construction technology guide " requirement, can not be in north
Capital produces and uses.
Patent CN 105176115A discloses a kind of SBS rubber powder composite modified asphalt and preparation method thereof, can be made bright
The aobvious modified pitch for improving pavement quality.However, its preparation method provided must be in 180 DEG C of high speed shear 2h, to equipment requirement
The high and big energy of consuming.
Summary of the invention
In order to solve problems in the prior art, the present invention provides a kind of novel SBS- rubber composite modified pitch and its preparation
Method.
The invention adopts the following technical scheme:
A kind of SBS- rubber composite modified pitch, by matrix pitch, SBS, auxiliary element naphthenic oil, scrap tire rubber
Grain, activator T2, crosslinking agent T4 are made, and the mass ratio of scrap tire rubber particle and matrix pitch is 1:2-6, and SBS dosage is useless
Old tire rubber grain and matrix pitch quality and 0.5%-3%, auxiliary element naphthenic oil dosage is waste tire rubber
Grain and matrix pitch quality and 0.25%-1%, activator T2 dosage be waste tire rubber granule and matrix pitch quality and
5%-10%, crosslinking agent T4 dosage be waste tire rubber granule and matrix pitch quality and 0.04%-0.08%.
Preferably, matrix pitch described in above scheme is selected from No. 50 A grades of bi tumenf orr oad, bi tumenf orr oad 70
Any one in numbers A grades, No. 90 A grades of bi tumenf orr oad and No. 110 A grades of bi tumenf orr oad.
In any of the above-described scheme preferably, the auxiliary element naphthenic oil can promote dispersion of the SBS in pitch, and
Softened rubber particle, any one in aromatic naphtha, pine tar, tall oil, coal tar.
In any of the above-described scheme preferably, the activator T2 is used for rubber macromolecule depolymerization desulfurization, selected from regeneration
Any one in activator 463,901,703.
In any of the above-described scheme preferably, the crosslinking agent T4 is selected from crosslinking agent for rubber molecule grafting crosslinking
Any one in TAIC, insoluble sulfur or sulfide.
In any of the above-described scheme preferably, the mass ratio of the scrap tire rubber particle and matrix pitch is 1:3-5.
In any of the above-described scheme preferably, the SBS dosage is waste tire rubber granule and matrix pitch quality
The 1%-2.5% of sum.
In any of the above-described scheme preferably, the SBS dosage is waste tire rubber granule and matrix pitch quality
The 1.5%-2.5% of sum.
In any of the above-described scheme preferably, the SBS dosage is waste tire rubber granule and matrix pitch quality
The 1.5%-2% of sum.
In any of the above-described scheme preferably, the auxiliary element naphthenic oil dosage is waste tire rubber granule and base
The 0.3%-0.5% of matter asphalt quality sum.
In any of the above-described scheme preferably, the auxiliary element naphthenic oil dosage is waste tire rubber granule and base
The 0.5%-0.9% of matter asphalt quality sum.
In any of the above-described scheme preferably, the activator T2 dosage is waste tire rubber granule and matrix pitch
The 6%-9% of quality sum.
In any of the above-described scheme preferably, the activator T2 dosage is waste tire rubber granule and matrix pitch
The 7%-8% of quality sum.
In any of the above-described scheme preferably, the crosslinking agent T4 dosage is waste tire rubber granule and matrix pitch
The 0.05%-0.07% of quality sum.
In any of the above-described scheme preferably, the crosslinking agent T4 dosage is waste tire rubber granule and matrix pitch
The 0.06% of quality sum.
The present invention provides a kind of preparation method of SBS- rubber composite modified pitch, and its step are as follows:
(1) it is heated to hot melt matrix pitch to mix and stir 160 DEG C -180 DEG C of temperature, SBS and auxiliary element naphthenic oil is added,
Lower stirring 15-20 minutes at 170 DEG C -180 DEG C；
(2) waste tire rubber granule of 40-60 mesh is added in gained mixture in (1)；
(3) activator T2 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 40-50 minutes at 180 DEG C -190 DEG C；
(5) crosslinking agent T4 is added, temperature is maintained at 180 DEG C -200 DEG C and carries out high speed shear simultaneously with 6000-12000rpm
1-3 minutes；
(6) mixture obtained by (5) is stirred 10-20 minutes, obtains SBS- rubber composite modified pitch.
According to the place of production of matrix pitch, producer and performance reasonable set temperature, time, shear velocity in above scheme.
Preferably, it is 165-175 DEG C that temperature is mixed and stirred described in step (1), and whipping temp is 175-180 DEG C, when stirring
Between 15 minutes.
In any of the above-described scheme preferably, waste tire rubber granule partial size described in step (2) is 40-55 mesh.
In any of the above-described scheme preferably, waste tire rubber granule partial size described in step (2) is 50-55 mesh.
In any of the above-described scheme preferably, waste tire rubber granule partial size described in step (2) is 45-50 mesh.
In any of the above-described scheme preferably, temperature is 180 DEG C -185 DEG C in step (4).
In any of the above-described scheme preferably, the time is 45-50 minutes in step (4).
In any of the above-described scheme preferably, revolving speed is 7000-11000rpm in step (5).More preferably, above-mentioned
Revolving speed is 8000-10000rpm, more preferably, revolving speed in step (5) in any of the above-described scheme in step (5) in either a program
For 9000rpm.
In any of the above-described scheme preferably, shear time is 1.5-2 minutes in step (5).
In any of the above-described scheme preferably, temperature is 185 DEG C -195 DEG C in step (5).
In any of the above-described scheme preferably, mixing time is 10-15 minutes in step (6).
SBS- rubber modified asphalt provided by the invention can be made with preparation method of the invention.
Compared with prior art, the invention has the following advantages that
Scrap rubber is added in preparation method provided by the invention in the co-mixing system using matrix pitch as decentralized medium
Grain, is swollen by high temperature and high shear forces, while inserting a series of auxiliary agent makes the system there are a depolymerization and again
The process of crosslinking ultimately forms rubber asphalt central elastic system.More uniform, the stable dispersion of scrap rubber powder particles in the system
In pitch medium, possesses more good storage stability and anti-aging property compared to common rubber asphalt, can be used as road surface
Binding material prepares mixture, reduces production cost, and there is good water resistant to damage and resist on the road surface of made mixture making
High and low temperature deformability, while having effects that noise reduction, improve the comfort level of traveling.
Preparation method provided by the invention, using a large amount of waste olds, salvage value is high；Preparation method is simple, high speed
Shear time is short, time-saving energy-saving.
SBS- rubber composite modified pitch provided by the invention meets " Beijing's waste rubber tyre powder pitch and asphalt mixture design
Construction technology guide ", it can be produced and used in Beijing.
SBS- rubber composite modified pitch provided by the invention is suitable for cold mixing cold laid asphaltic mixture.
SBS- rubber composite modified pitch provided by the invention can overcome the problems, such as that the existing rubber asphalt applicable time is short:
Existing rubber asphalt must use in production 12 hours, and precipitating isolation otherwise occurs or rubber powder reacts completely, can not play and change
Property effect.And the SBS- rubber composite modified pitch applicable time of the invention can reach 10-14 days in a heated state, cooling shape
The state applicable time is longer.
Specific embodiment
In order to further appreciate that the present invention, the present invention is described in more detail combined with specific embodiments below, is implemented
Example only has exemplary effect to the present invention, without the effect of any restrictions；Anyone skilled in the art are in this hair
The insubstantial modifications made on the basis of bright, all should belong to the scope of protection of the invention.
Insoluble sulfur used in the present invention is bought from Wuxi Huasheng Rubber Technical Co., Ltd., crosslinking agent
TAIC is bought from upper Hayden's U.S. new material Science and Technology Ltd., and regeneration activator, naphthenic oil purchase are scientific and technological from one rubber of Anhui will
Co., Ltd.
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 dosage be waste tire rubber granule and matrix pitch quality and 2%, auxiliary element aromatic naphtha is used
Amount be waste tire rubber granule and matrix pitch quality and 0.25%, 463 dosage of regeneration activator is waste tire rubber
Particle and matrix pitch quality and 5%, crosslinking agent TAIC dosage be waste tire rubber granule and matrix pitch quality and
0.04%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) to SBS and auxiliary element aromatic naphtha will be added in 160 DEG C of hot melt matrix pitches, 15 points are stirred at 170 DEG C
Clock；
(2) waste tire rubber granule of 45-55 mesh is added in gained mixture in (1)；
(3) regeneration activator 463 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 40 minutes at 180 DEG C；
(5) crosslinking agent TAIC is added, temperature is 185 DEG C -190 DEG C simultaneously with 10000rpm progress high speed shear 1 minute；
(6) mixture obtained by (5) is stirred 20 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 1%, auxiliary element pine tar is used
Amount be waste tire rubber granule and matrix pitch quality and 1%, 901 dosage of regeneration activator is waste tire rubber granule
With matrix pitch quality and 5%, crosslinking agent TAIC dosage be waste tire rubber granule and matrix pitch quality and
0.08%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) to SBS and auxiliary element pine tar will be added in 165 DEG C of hot melt matrix pitches, 20 points are stirred at 180 DEG C
Clock；
(2) waste tire rubber granule of 45-55 mesh is added in gained mixture in (1)；
(3) regeneration activator 901 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 40 minutes at 190 DEG C；
(5) crosslinking agent TAIC is added, temperature is 185 DEG C -190 DEG C simultaneously with 9900rpm progress high speed shear 1 minute；
(6) mixture obtained by (5) is stirred 10 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 1.5%, auxiliary element tall oil
Dosage be waste tire rubber granule and matrix pitch quality and 0.4%, 703 dosage of regeneration activator is waste tire rubber
Particle and matrix pitch quality and 8%, insoluble sulfur dosage be waste tire rubber granule and matrix pitch quality and
0.05%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) to SBS and auxiliary element tall oil will be added in 170 DEG C of hot melt matrix pitches, 15 points are stirred at 170 DEG C
Clock；
(2) waste tire rubber granule of 40-50 mesh is added in gained mixture in (1)；
(3) regeneration activator 703 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 45 minutes at 185 DEG C；
(5) insoluble sulfur is added, temperature is 190 DEG C -195 DEG C simultaneously with 8000rpm progress high speed shear 3 minutes；
(6) mixture obtained by (5) is stirred 20 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 3%, auxiliary element coal tar is used
Amount be waste tire rubber granule and matrix pitch quality and 0.5%, 703 dosage of regeneration activator is waste tire rubber
Grain and matrix pitch quality and 6%, crosslinking agent TAIC dosage be waste tire rubber granule and matrix pitch quality and
0.06%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) SBS and auxiliary element coal tar are added into 175 DEG C of hot melt matrix pitches, is stirred 16 minutes at 175 DEG C；
(2) waste tire rubber granule of 40-60 mesh is added in gained mixture in (1)；
(3) regeneration activator 703 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 50 minutes at 182 DEG C；
(5) sulphur is added, temperature is 195 DEG C -200 DEG C simultaneously with 6000rpm progress high speed shear 3 minutes；
(6) mixture obtained by (5) is stirred 15 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 0.5%, auxiliary element aromatic naphtha
Dosage be waste tire rubber granule and matrix pitch quality and 0.6%, 463 dosage of regeneration activator is waste tire rubber
Particle and matrix pitch quality and 7%, sulfide (tetramethylthiuram disulfide) dosage be waste tire rubber granule with
The 0.07% of matrix pitch quality sum.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) SBS and auxiliary element aromatic naphtha, pine tar mixture are added into 180 DEG C of hot melt matrix pitches, at 180 DEG C
Stirring 17 minutes；
(2) waste tire rubber granule of 40-50 mesh is added in gained mixture in (1)；
(3) regeneration activator 703 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 42 minutes at 187 DEG C；
(5) tetramethylthiuram disulfide is added, temperature is 190 DEG C -195 DEG C and carries out high speed shear 2 simultaneously with 7000rpm
Minute；
(6) mixture obtained by (5) is stirred 13 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 2.5%, auxiliary element tall oil
Dosage be waste tire rubber granule and matrix pitch quality and 0.7%, 901 dosage of regeneration activator is waste tire rubber
Particle and matrix pitch quality and 9%, sulfide DTDM (4', 4- dithio morpholine) dosage is waste tire rubber granule
With matrix pitch quality and 0.05%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) it to addition SBS and auxiliary element tall oil in matrix pitch will be heated, is stirred 15 minutes at 170 DEG C；
(2) waste tire rubber granule of 40-50 mesh is added in gained mixture in (1)；
(3) regeneration activator 901 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 45 minutes at 185 DEG C；
(5) sulfide is added, temperature is 190 DEG C -195 DEG C simultaneously with 9000rpm progress high speed shear 1.5 minutes；
(6) mixture obtained by (5) is stirred 18 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 1.5%, auxiliary element aromatic hydrocarbons
Oily dosage be waste tire rubber granule and matrix pitch quality and 0.8%, 703 dosage of regeneration activator is waste tire rubber
Glue particle and matrix pitch quality and 8%, insoluble sulfur dosage be waste tire rubber granule and matrix pitch quality and
0.05%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) SBS and auxiliary element tall oil are added into 175 DEG C of hot melt matrix pitches, is stirred 15 minutes at 170 DEG C；
(2) waste tire rubber granule of 45-60 mesh is added in gained mixture in (1)；
(3) regeneration activator 703 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 45 minutes at 185 DEG C；
(5) insoluble sulfur is added, temperature is 190 DEG C -195 DEG C simultaneously with 8500rpm progress high speed shear 2.5 minutes；
(6) mixture obtained by (5) is stirred 15 minutes, obtains 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 dosage be waste tire rubber granule and matrix pitch quality and 2%, auxiliary element pine tar
Dosage be waste tire rubber granule and matrix pitch quality and 0.4%, 703 dosage of regeneration activator is waste tire rubber
Particle and matrix pitch quality and 8%, insoluble sulfur dosage be waste tire rubber granule and matrix pitch quality and
0.05%.
In the present embodiment, SBS- rubber composite modified pitch the preparation method comprises the following steps:
(1) SBS and auxiliary element pine tar, tall oil mixture are added into 165 DEG C of hot melt matrix pitches, at 170 DEG C
Lower stirring 15 minutes；
(2) waste tire rubber granule of 40-50 mesh is added in gained mixture in (1)；
(3) regeneration activator 703 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is being stirred 45 minutes at 185 DEG C；
(5) insoluble sulfur is added, temperature is 190 DEG C -195 DEG C simultaneously with 11000rpm progress high speed shear 3 minutes；
(6) mixture obtained by (5) is stirred 20 minutes, obtains SBS- rubber composite modified pitch.
Comparative example 1:
The mass ratio of scrap tire rubber and matrix pitch is 1:1
| Ingredient | SBS | Aromatic naphtha | Regeneration activator 463 | Crosslinking agent TAIC |
| Dosage | 0.4% | 0.2% | 12% | 1% |
Preparation method is identical as preparation method in embodiment 1.
Comparative example 2
The mass ratio of scrap tire rubber and matrix pitch is 1:7
| Ingredient | SBS | Pine tar | Regeneration activator 901 | Crosslinking agent TAIC |
| Dosage | 0.1% | 2% | 13 | 0.02 |
Preparation method is identical as 2 preparation method of embodiment.
Comparative example 3
Be in its preparation process with the difference of embodiment 3: in step (1) and temperature is 150 DEG C, whipping temp 160
DEG C, mixing time 20 minutes.In step (2), 30 mesh waste tire rubber granules are added.
Comparative example 4
Be in its preparation process with the difference of embodiment 4: in step (2), entering waste tire rubber granule is 80 mesh.Step
(4) in, 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, furfural extract oil 0.1g is added, stirs evenly, continuously adds
SBS3.2g, 30-220 mesh waste Crumb rubber 0.5g, clay 0.2g are stirred 40 minutes with 3000 revs/min, sulphur are added in whipping process
Sulphur powder 0.1g.Then it is stirred 200 minutes with 300 revs/min, prepares pitch.
Comparative example 6
The SBS for being 10% by weight percent, the 80% above rubber powder of 40 mesh, 10% polyethylene is at 10-400 revs/min
Under be uniformly mixing to obtain composite modifier.It is added in 160 DEG C of No. 90 heavy traffic paving asphalts, composite modifier accounts for the 6% of total weight.
Then 4000 revs/min lower high speed shear 15 minutes.Titanate ester stabilizer is added, continues 25 points of shearing at 160-180 DEG C
Pitch is made in clock.
By pitch prepared by SBS- rubber composite modified pitch prepared by the embodiment of the present invention and comparative example at 180 DEG C
Applicable time be listed in Table 1 below.
1 pitch applicable time of table 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 grades of SBS- rubber composite modified pitch prepared by the embodiment of the present invention and bi tumenf orr oad (in table
" asphalt "), General Purpose Rubber performance of modified bitumen (" common " in table), " Beijing's waste rubber tyre powder pitch and asphalt mixture design
Construction technology guide " (" technical manual " in table) be listed in table 2, wherein after embodiment data be rubber and matrix pitch ratio.
Seen from table 1, the present invention has good modifying function for No. 70 A grades of ordinary road asphalt, and each index is by obvious
Promotion, comply fully with " Beijing's waste rubber tyre powder pitch and asphalt mixture design construction technical manual " all standard.With it is general
Logical rubber modified asphalt is compared, and SBS- rubber chemistry composite modified asphalt produced by the invention is in viscosity, short-term ageing resistance
Energy, high-temperature storage stability have obvious technical advantage.
2 product performance index contrast table of table
By No. 70 A grades of SBS- rubber composite modified pitch prepared by the embodiment of the present invention and bi tumenf orr oad (in table
" asphalt "), General Purpose Rubber modified pitch (" common " in table) carry out mix proportion design respectively, select same grade
In the case where matching and using oil mass, evaluation uses influence of the different pitches to bituminous concrete mixture performance.
Specifically according to the serial of methods in JTGE20-2011 " highway engineering pitch and Asphalt Mixture Experiment regulation " into
Row test.2011 asphalt production method (compacting process) of T0702-makes Marshall Test, drips according to T0709-2011
Green mixture Marshall Test is tested；Asphalt indirect tensile test on frozen-thaw, test temperature are carried out according to 2000 method of T0729-
Degree is -18 DEG C, loading speed 50mm/min；Make wheel tracking test test block according to the rolling legal system in T0719-2011 and carries out
Asphalt mixture in track test；Make wheel tracking test test block according to the rolling legal system in T0719-2011, test block cutting is grown up
The diamond shape pillar of 250mm ± 2.0mm, width 30mm ± 2.0mm, high 35 ± 2.0mm, are then dripped according to 2011 method of T0715-
Green mixture bend test, test temperature are -18 DEG C, loading speed 50mm/min, test data such as table 3.
3 pitch comprehensive performance evaluation of table
As can be seen from Table 2, SBS- rubber chemistry composite modified asphalt mixture is relative to matrix pitch and General Purpose Rubber
Asphalt has stronger high and low temperature performance, and indices comply fully with technical standard, and application prospect is extensive.
Claims (24)
1. a kind of SBS- rubber composite modified pitch, raw material composition are as follows: matrix pitch, SBS, scrap tire rubber particle, activation
Agent T2, crosslinking agent T4, it is characterised in that: it further include auxiliary element naphthenic oil, the scrap tire rubber particle and matrix pitch
Mass ratio is 1:2-6, SBS dosage be waste tire rubber granule and matrix pitch quality and 0.5%-3%, auxiliary element ring
Alkane oil dosage be waste tire rubber granule and matrix pitch quality and 0.25%-1%, activator T2 dosage is waste tire
Rubber grain and matrix pitch quality and 5%-10%, crosslinking agent T4 dosage is waste tire rubber granule and matrix pitch matter
Measure the 0.04%-0.08% of sum；The preparation method of the SBS- rubber composite modified pitch in sequence the following steps are included:
(1) it is heated to hot melt matrix pitch to mix and stir temperature, SBS and auxiliary element naphthenic oil is added, and be stirred；
(2) waste tire rubber granule is added in gained mixture in (1)；
(3) activating agent T2 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is stirred；
(5) crosslinking agent T4 is added, while carrying out high speed shear；
(6) continue to stir mixture obtained by (5), obtain SBS- rubber composite modified pitch；
In step (1), the temperature of mixing and stirring is 160 DEG C -180 DEG C, and the time of the stirring is 15-20 minutes；
In step (4), the temperature of the stirring is 180 DEG C -190 DEG C；The time of the stirring is 40-50 minutes；
In step (5), the revolving speed of the shearing is 6000-12000rpm；The time of the shearing is 1-3 minutes；The shearing
Temperature be 180 DEG C -200 DEG C；
In step (6), the time of the stirring is 10-20 minutes.
2. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the matrix pitch is selected from road stone
In No. 50 A grades of oil asphalt, No. 70 A grades of bi tumenf orr oad, No. 90 A grades of bi tumenf orr oad and No. 110 A grades of bi tumenf orr oad
Any one.
3. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the auxiliary element naphthenic oil is selected from
Pine tar, tall oil, any one in coal tar.
4. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the activating agent T2 is selected from and lives again
Any one in agent 463,901,703.
5. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the crosslinking agent T4 is selected from crosslinking agent
Any one of TAIC, insoluble sulfur or sulfide.
6. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the partial size of the scrap tire rubber
For 40-55 mesh.
7. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the partial size of the scrap tire rubber
For 45-50 mesh.
8. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the scrap tire rubber particle and base
The mass ratio of matter pitch is 1:3-5.
9. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: SBS dosage is waste tire rubber
Particle and matrix pitch quality and 1%-2.5%.
10. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: SBS dosage is waste tire rubber
Particle and matrix pitch quality and 1.5%-2.5%.
11. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: SBS dosage is waste tire rubber
Particle and matrix pitch quality and 1.5%-2%.
12. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: auxiliary element naphthenic oil dosage is
Waste tire rubber granule and matrix pitch quality and 0.3%-0.5%.
13. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: auxiliary element naphthenic oil dosage is
Waste tire rubber granule and matrix pitch quality and 0.5%-0.9%.
14. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the activator T2 dosage is useless
Old tire rubber grain and matrix pitch quality and 6%-9%.
15. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the activator T2 dosage is useless
Old tire rubber grain and matrix pitch quality and 7%-8%.
16. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the crosslinking agent T4 dosage is useless
Old tire rubber grain and matrix pitch quality and 0.05%-0.07%.
17. SBS- rubber composite modified pitch as described in claim 1, it is characterised in that: the crosslinking agent T4 dosage is useless
Old tire rubber grain and matrix pitch quality and 0.06%.
18. the preparation method of the SBS- rubber composite modified pitch as described in any one of claim 1-17, including following step
It is rapid:
(1) it is heated to hot melt matrix pitch to mix and stir temperature, SBS and auxiliary element naphthenic oil is added, and be stirred；
(2) waste tire rubber granule is added in gained mixture in (1)；
(3) activating agent T2 is added into mixture obtained by (2)；
(4) mixture obtained by (3) is stirred；
(5) crosslinking agent T4 is added, while carrying out high speed shear；
(6) continue to stir mixture obtained by (5), obtain SBS- rubber composite modified pitch；
In step (1), the temperature of mixing and stirring is 160 DEG C -180 DEG C, and the time of the stirring is 15-20 minutes；
In step (4), the temperature of the stirring is 180 DEG C -190 DEG C；The time of the stirring is 40-50 minutes；
In step (5), the revolving speed of the shearing is 6000-12000rpm；The time of the shearing is 1-3 minutes；The shearing
Temperature be 180 DEG C -200 DEG C；
In step (6), the time of the stirring is 10-20 minutes.
19. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (1),
The temperature of the stirring is 170 DEG C -180 DEG C.
20. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (5),
The revolving speed of the shearing is 7000-11000rpm.
21. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (5),
The revolving speed of the shearing is 8000-10000rpm.
22. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (5),
The revolving speed of the shearing is 9000rpm.
23. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (5),
The time of the shearing is 1-2 minutes.
24. the preparation method of SBS- rubber composite modified pitch as claimed in claim 18, it is characterised in that: in step (5),
The temperature of the shearing is 185 DEG C -195 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143011.4A CN105778530B (en) | 2016-03-14 | 2016-03-14 | A kind of SBS- rubber composite modified pitch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143011.4A CN105778530B (en) | 2016-03-14 | 2016-03-14 | A kind of SBS- rubber composite modified pitch and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105778530A CN105778530A (en) | 2016-07-20 |
| CN105778530B true CN105778530B (en) | 2019-01-29 |
Family
ID=56393539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610143011.4A Expired - Fee Related CN105778530B (en) | 2016-03-14 | 2016-03-14 | A kind of SBS- rubber composite modified pitch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105778530B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845180A (en) * | 2018-08-20 | 2020-02-28 | 北京市道路工程质量监督站 | Solvent asphalt mixture and preparation method and application thereof |
| WO2020176101A1 (en) * | 2019-02-28 | 2020-09-03 | Lehigh Technologies, Inc. | Asphalt modifier composition and rubber modified asphalt having increased storage stability |
| 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 |
| CN112457679B (en) * | 2020-11-24 | 2022-03-11 | 北京路德永泰环保科技有限公司 | High-performance rubber asphalt and preparation method thereof |
| CN114479496B (en) * | 2022-02-15 | 2023-03-31 | 天津城建大学 | Preparation method of desulfurized rubber modified asphalt |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609165A (en) * | 2003-10-24 | 2005-04-27 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt and its prepn process |
| CN101089049A (en) * | 2006-06-13 | 2007-12-19 | 上海蜜荣科电气数字集成有限责任公司 | Waste rubber tyre powder modified asphalt and its prepn process |
| CN102181163A (en) * | 2011-05-23 | 2011-09-14 | 江阴泰富沥青有限公司 | Waste rubber powder/styrene-butadiene-styrene (SBS) composite modified asphalt and production process thereof |
| CN102249599A (en) * | 2011-05-05 | 2011-11-23 | 刘廷国 | Method for preparing rubber asphalt by using discarding tire rubber block |
| CN102977621A (en) * | 2012-12-25 | 2013-03-20 | 天津海泰环保科技发展有限公司 | SBS (styrene-butadiene-styrene)/scrap rubber powder composite modified asphalt and preparation method thereof |
| CN103073903A (en) * | 2013-02-05 | 2013-05-01 | 西安公路研究院 | Rubber powder-modified asphalt and preparation method thereof |
| CN104312173A (en) * | 2014-10-21 | 2015-01-28 | 吉林省嘉瑞沥青科技有限公司 | Rubber composite modified asphalt and preparation method thereof |
| CN104830076A (en) * | 2015-04-15 | 2015-08-12 | 江阴市宝利沥青新材料有限公司 | Method for preparing rubber waste cracking converted modified asphalt |
| CN105176115A (en) * | 2015-10-14 | 2015-12-23 | 辽宁省交通科学研究院 | SBS-rubber powder composite modified asphalt and preparation method thereof |
-
2016
- 2016-03-14 CN CN201610143011.4A patent/CN105778530B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609165A (en) * | 2003-10-24 | 2005-04-27 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt and its prepn process |
| CN101089049A (en) * | 2006-06-13 | 2007-12-19 | 上海蜜荣科电气数字集成有限责任公司 | Waste rubber tyre powder modified asphalt and its prepn process |
| CN102249599A (en) * | 2011-05-05 | 2011-11-23 | 刘廷国 | Method for preparing rubber asphalt by using discarding tire rubber block |
| CN102181163A (en) * | 2011-05-23 | 2011-09-14 | 江阴泰富沥青有限公司 | Waste rubber powder/styrene-butadiene-styrene (SBS) composite modified asphalt and production process thereof |
| CN102977621A (en) * | 2012-12-25 | 2013-03-20 | 天津海泰环保科技发展有限公司 | SBS (styrene-butadiene-styrene)/scrap rubber powder composite modified asphalt and preparation method thereof |
| CN103073903A (en) * | 2013-02-05 | 2013-05-01 | 西安公路研究院 | Rubber powder-modified asphalt and preparation method thereof |
| CN104312173A (en) * | 2014-10-21 | 2015-01-28 | 吉林省嘉瑞沥青科技有限公司 | Rubber composite modified asphalt and preparation method thereof |
| CN104830076A (en) * | 2015-04-15 | 2015-08-12 | 江阴市宝利沥青新材料有限公司 | Method for preparing rubber waste cracking converted modified asphalt |
| CN105176115A (en) * | 2015-10-14 | 2015-12-23 | 辽宁省交通科学研究院 | SBS-rubber powder composite modified asphalt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105778530A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105778530B (en) | A kind of SBS- rubber composite modified pitch and preparation method thereof | |
| CN105293996B (en) | A kind of preparation method of warm-mixed recycled asphalt mixture | |
| CN102051056B (en) | Styrene-butadiene rubber modified asphalt composition and preparation method thereof | |
| CN113698139B (en) | High-doping-amount RAP plant-mixed hot-recycling modified asphalt mixture and preparation method thereof | |
| CN102337036B (en) | Oxidized polyethlene wax-containing modified asphalt and preparation method thereof, and asphalt concrete | |
| CN105801006B (en) | Asphalt for heavy traffic road and preparation method thereof | |
| CN105236831A (en) | Aged-asphalt regeneration agent, regenerated asphalt mixture and preparation method of two | |
| CN105482475A (en) | Composite modified hard asphalt and preparation method thereof | |
| CN105504844A (en) | Environment-friendly asphalt reclaiming agent and preparing method and using method thereof | |
| CN107446364A (en) | A kind of rubber asphalt and preparation method thereof | |
| CN101362860A (en) | Crumber rubber modified asphalt and preparation technology thereof | |
| CN106242378A (en) | Hot in-plant reclaimed asphalt mixture and preparation method thereof | |
| CN106519715B (en) | A kind of trench oil base modification biological pitch, biological asphalt mixture and preparation method thereof | |
| CN103044933B (en) | Stabilizer composition for polymer modified asphalt | |
| CN109534722A (en) | A kind of high-performance reclaimed bituminous pavement cold-repairing material and preparation method thereof | |
| CN102952293A (en) | Compound rubber powder modifying agent as well as preparation method and application method thereof | |
| CN101348350A (en) | Waste rubber powder composite modified asphalt and preparation thereof | |
| CN102942335A (en) | Microcrystalline wax-modified cold patch asphalt mixture and preparation method thereof | |
| CN110283616B (en) | Waste tire thermal cracking regeneration carbon black modified material and modified asphalt | |
| CN109810520A (en) | One kind having both the high glue pitch of high performance low-temperature environment-friendlyization and its production technology | |
| CN110527308A (en) | A kind of high-modulus asphalt cementitious matter and its preparation method and application | |
| CN113527899A (en) | Cast modified asphalt and cast modified asphalt concrete | |
| CN105541181A (en) | Rubber powder pavement material and construction method thereof | |
| CN102051057B (en) | Styrene butadiene rubber modified asphalt and preparation method thereof | |
| CN109851283A (en) | A kind of construction method of rubber and plastic alloy modified asphalt concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |