CN109694585A - A kind of high viscosity composite modified asphalt and preparation method thereof - Google Patents

A kind of high viscosity composite modified asphalt and preparation method thereof Download PDF

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Publication number
CN109694585A
CN109694585A CN201811611194.3A CN201811611194A CN109694585A CN 109694585 A CN109694585 A CN 109694585A CN 201811611194 A CN201811611194 A CN 201811611194A CN 109694585 A CN109694585 A CN 109694585A
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parts
high viscosity
modified asphalt
composite modified
matrix pitch
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高明星
赵玉芳
关鹏
霍艳辉
吕俊祥
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Inner Mongolia Agricultural University
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Inner Mongolia Agricultural University
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/329Phosphorus containing acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • 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)
  • Epoxy Resins (AREA)

Abstract

The present invention relates to building material technical field, especially a kind of high viscosity composite modified asphalt and preparation method thereof.It includes following raw material component: 500 parts of matrix pitch, 29.1-43.2 parts of rubber powder, 17.0-24.9 parts of carboxylic styrene butadiene latex, 8.7-18.9 parts of polyphosphoric acids, 9.4-17.9 parts of epoxy resin, 9.4-17.9 parts of curing agent.The present invention can be provided simultaneously with outstanding cryogenic property and high-temperature behavior, and have lower needle penetration, and 5 DEG C of ductilities reach 58.7cm, 135 DEG C of kinematic viscosity can be more than 2400mm2/ s, and brittle point is significantly reduced, it can adapt to the performance requirement of summer high temperature and winter frost road surface.

Description

A kind of high viscosity composite modified asphalt and preparation method thereof
Technical field
The present invention relates to building material technical field, especially a kind of high viscosity composite modified asphalt and preparation method thereof.
Background technique
It is well known that some areas of China's northeastern Inner Mongolia belong to seasonal iced areas, day and night temperature it is larger and Ultraviolet radiation is serious, and the bituminous pavement in these areas, which exists, to be easy to appear cold cracking and caused because endurance quality is weak A series of Asphalt Pavement Damages, or even the problem of traffic safety can be seriously affected.In this regard, being proposed in industry to existing pitch Many improvement projects.
Such as using SBR modified pitch as the scheme of representative, because its cryogenic property is excellent, and there is certain uvioresistant Aging action and in severe cold, intensive ultraviolet area using more.However, as Chinese invention patent application 201810164122.2 is public A kind of composite modified asphalt and preparation method thereof suitable for High aititude extremely frigid zones opened, composite modified asphalt component include SBS modifier 1-3%;Nano-ZnO 1-3%;Sulphur 1-2%;Stabilizer 0.15-0.3%, surplus are SBR modified pitch;Its By SBS modifier and nano-ZnO being added in SBR modified pitch to improve performance.For another example Chinese invention patent application A kind of nanoparticle SBR composite modified asphalt disclosed in 201410452130.9, nanoparticle SBR composite modified asphalt is by nanometer SiO2 particle, butadiene-styrene rubber and matrix pitch composition.According to the record of its specification, with preferable cryogenic property, performance For its 5 DEG C of ductility about 30.But its high-temperature behavior not on the books.It can be seen from this that the height of these SBR composite modified asphalts Warm nature can be poor, is not able to satisfy the biggish seasonal freezing region road of day and night temperature and demand is used for a long time.
For another example using rubber modified asphalt as the scheme of representative, resin, the hydrocarbon in pitch are absorbed using waste rubber powder A variety of organic matters such as class mention wet rubber powder, expansion, viscosity increase, softening point by a series of physical and chemical changes Height, and the viscosity, toughness, elasticity of rubber and pitch have been taken into account, to improve the pavement performance of rubber asphalt.However, as in A kind of rubber powder modified asphalt disclosed in state's application for a patent for invention 201810310742.2 and preparation method thereof, raw material are as follows: 30-40 Part rock asphalt, 20-30 parts of polyphosphoric acids, 10-50 parts of rubber powder, 2-3 parts of stabilizer, 1-5 parts of SBS modifier, 1-2 parts of PE modifying agent, 1-10 parts of solubilizer, 1-3 parts of aromatic naphtha, 15 DEG C of ductilities are greater than 160, but are not documented in Product ductility under lower temperature, does not record its high-temperature behavior yet.For another example Chinese invention patent application 201711415343.4 Disclosed a kind of high-viscosity asphalt, consisting of: Styrene-Butadiene-Styrene Block Copolymer (SBS) 3-8%, butadiene-styrene rubber (SBR) 1-3%, compatilizer 2-10%, stabilizer 0.08-0.3%, dodecyl sodium sulfate 0.5-2%, polyphosphoric acids (PPA) 0.8-1.5%, other is matrix pitch.However, its 5 DEG C of ductilities only about 30, can not adapt to low temp area.It can be seen from this that Rubber modified asphalt brings a negative impact cryogenic property, increases through the modified asphalt viscosity of polyphosphoric acids, high-temperature behavior have compared with It is apparent to improve, while temperature sensitivity reduces, but polyphosphoric acids cannot improve the cryogenic property of pitch.
In conclusion existing modified pitch largely only merely improves the high-temperature behavior or low temperature properties of pitch Energy;Therefore, existing modified pitch for summer temp is higher and seasonal freezing region adaptability that winter temperature is low is poor.
Summary of the invention
In view of the deficiency of the prior art, the first object of the present invention is to provide a kind of high viscosity composite modified Pitch;Second object of the present invention is to provide a kind of method for preparing high viscosity composite modified asphalt.
To achieve the goals above, first technical solution that the present invention uses are as follows:
A kind of high viscosity composite modified asphalt, it includes following raw material component:
500 parts of matrix pitch, 29.1-43.2 parts of rubber powder, 17.0-24.9 parts of carboxylic styrene butadiene latex, polyphosphoric acids 8.7- 18.9 parts, 9.4-17.9 parts of epoxy resin, 9.4-17.9 parts of curing agent;Wherein, rubber powder can be according to the actual situation with waste and old wheel Tire is raw material, is obtained after pulverizing and sieving, and polyphosphoric acids then use industrial raw material standard (phosphorus pentoxide content >= 85wt%, molecular weight 81.99580).
Preferably, it is grouped as by following raw material group: 500 parts of matrix pitch, 41.7-43.2 parts of rubber powder, carboxylic 17.0-24.9 parts of base styrene-butadiene latex, 10.0-10.3 parts of polyphosphoric acids, 9.4-14.1 parts of epoxy resin, curing agent 9.4-14.1 Part.
Preferably, the matrix pitch be No. 90 matrix pitches, 25 DEG C of needle penetration 85dmm, 54.2 DEG C of softening point.
Preferably, the mesh number of the rubber powder is 60 mesh.
Preferably, the solid content of the carboxylic styrene butadiene latex is 48%.
Preferably, the epoxy resin is bisphenol A type epoxy resin, as the source De Lutai epoxy Science and Technology Ltd. produces E-44 (6101) type epoxy resin, viscosity are 25 DEG C: 6-10Pa.S.
Preferably, the curing agent is and the preferably low molecule pa resin selected from polyamide.Such as moral Shandong, Shandong 650 low molecule pa resins of Tai Yuan epoxy Science and Technology Ltd. production.
Second technical solution that the present invention uses are as follows:
A method of preparing a kind of above-mentioned high viscosity composite modified asphalt, it the following steps are included:
S1 raw material preparation
Matrix pitch, rubber powder, carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and solidification are weighed by weight ratio Agent;
The pretreatment of S2 matrix pitch
Matrix pitch is placed in high-speed shearing machine, being heated to 140-160 DEG C makes matrix pitch in molten state, shear rate To shear 10-20min under 2500-3500r/min;
Rubber powder is added into the matrix pitch handled through step S2 and in 170-180 DEG C, shear rate 4500- by S3 30-40min is sheared under 5500r/min;Then carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are sequentially added And 39-51min is sheared at 170-180 DEG C, shear rate 4500-5500r/min, asphalt mixture can be obtained;
S4, the asphalt mixture as made from step S3 is kept the temperature into 30-50min at 130-140 DEG C, high viscosity can be obtained Composite asphalt.
As the above scheme is adopted, composite modified asphalt of the invention can be provided simultaneously with outstanding cryogenic property and high temperature Performance, and have lower needle penetration, 5 DEG C of ductilities reach 58.7cm, 135 DEG C of kinematic viscosity can be more than 2400mm2/ s, and have Brittle point is reduced to effect, can adapt to the performance requirement of summer high temperature and winter frost road surface.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover Multitude of different ways is implemented.
Embodiment 1
S1, weigh raw material: No. 90 500 parts of matrix pitches, 29.8 parts of the rubber powder that mesh number is 60 purposes, solidification amount are 48% 20.8 parts of carboxylic styrene butadiene latex, 18.9 parts of polyphosphoric acids, the bisphenol A type epoxy resin for meeting industrial raw material standard 17.9 parts, 17.9 parts of low molecule pa resin curing agent.
S2, matrix pitch pretreatment: matrix pitch is placed in high-speed shearing machine, being heated to 150 DEG C makes the matrix pitch be in Molten state, shear rate are to shear 10min under 3000r/min;
S3, rubber powder is added into the matrix pitch handled through step S2 and at 175 DEG C, shear rate 5000r/min Shear 30min;Then carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are sequentially added and continues to shear 45min obtains asphalt mixture.
S4, the asphalt mixture as made from step S3 is placed in insulating box, after keeping the temperature 30min at 135 DEG C, then through certainly Right cooling treatment, can be obtained high viscosity composite asphalt.
Embodiment 2
S1, weigh raw material: No. 90 500 parts of matrix pitches, 29.1 parts of the rubber powder that mesh number is 60 purposes, solidification amount are 48% 20.3 parts of carboxylic styrene butadiene latex, 18.7 parts of polyphosphoric acids, the bisphenol A type epoxy resin for meeting industrial raw material standard 11.6 parts, 11.6 parts of low molecule pa resin curing agent.
S2, matrix pitch is placed in high-speed shearing machine, being heated to 140 DEG C makes matrix pitch in molten state, shear rate To shear 20min under 2500r/min.
S3, rubber powder is added into the matrix pitch handled through step S2 and at 170 DEG C, shear rate 4800r/min Shear 35min;Then carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are sequentially added and continues to shear 45min obtains asphalt mixture.
S4, the drip of the asphalt mixture as made from step S3 is placed in insulating box, after keeping the temperature 35min at 130 DEG C, then is passed through After natural cooling processing, high viscosity composite asphalt can be obtained.
Embodiment 3
S1, weigh raw material: No. 90 500 parts of matrix pitches, 43.2 parts of the rubber powder that mesh number is 60 purposes, solidification amount are 48% 24.9 parts of carboxylic styrene butadiene latex, 10.3 parts of polyphosphoric acids, the bisphenol A type epoxy resin for meeting industrial raw material standard 14.9 parts, 14.9 parts of low molecule pa resin curing agent.
S2, matrix pitch is placed in high-speed shearing machine, being heated to 140 DEG C makes matrix pitch in molten state, shear rate To shear 12min under 2500r/min.
S3, rubber powder is added into the matrix pitch handled through step S2 and at 170 DEG C, shear rate 5500r/min Shear 30min;Then carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are sequentially added and continues to shear 40min obtains asphalt mixture.
S4, the drip of the asphalt mixture as made from step S3 is placed in insulating box, after keeping the temperature 30min at 140 DEG C, then is passed through After natural cooling processing, high viscosity composite asphalt can be obtained.
Embodiment 4
Then rubber powder is added, shears 30min at 170 DEG C, shear rate 5000r/min, then sequentially adds carboxylic Base butadiene-styrene latex, polyphosphoric acids, epoxy resin and curing agent continue to shear 42min, obtain asphalt mixture.
Asphalt mixture is placed in insulating box, 30min is kept the temperature at 135 DEG C, obtains high viscosity composite asphalt after cooling.
S1, weigh raw material: No. 90 500 parts of matrix pitches, 41.7 parts of the rubber powder that mesh number is 60 purposes, solidification amount are 48% 17.0 parts of carboxylic styrene butadiene latex, 10.0 parts of polyphosphoric acids, the bisphenol A type epoxy resin for meeting industrial raw material standard 9.4 parts, 9.4 parts of low molecule pa resin curing agent.
S2, matrix pitch is placed in high-speed shearing machine, being heated to 160 DEG C makes matrix pitch in molten state, shear rate To shear 12min under 3000r/min.
S3, rubber powder is added into the matrix pitch handled through step S2 and at 180 DEG C, shear rate 5000r/min Shear 30min;Then carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are sequentially added and continues to shear 42min obtains asphalt mixture.
S4, the drip of the asphalt mixture as made from step S3 is placed in insulating box, after keeping the temperature 30min at 135 DEG C, then is passed through After natural cooling processing, high viscosity composite asphalt can be obtained.
Using traditional pitch that any modifying agent is not added as reference examples 1 to be added with modifying rubber powder in the prior art The pitch of agent is viscous by 25 DEG C of needle penetrations of each example pitch of measurement, softening point, 5 DEG C of ductilities, 135 DEG C of movements as reference examples 2 The indexs such as degree, brittle point embody the performance of each example pitch (each example asphalt performance is shown in Table one)
According to known to table one: composite modified asphalt of the invention is provided simultaneously with outstanding cryogenic property and high-temperature behavior;Especially It is that the weight of raw material components is 500 parts of matrix pitch, 41.7-43.2 parts of rubber powder, carboxylic styrene butadiene latex 17.0- When 24.9 parts, 10.0-10.3 parts of polyphosphoric acids, 9.4-14.1 parts of epoxy resin, 9.4-14.1 parts of curing agent, 5 DEG C of pitch prolong Degree and 135 DEG C of kinematic viscosity phenotypes are prominent, are significantly better than the modified pitch of the prior art.Based on this, the embodiment of the present invention is answered Closing modified pitch can adapt to the performance requirement of summer high temperature and winter frost road surface.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations Equivalent structure or equivalent flow shift made by present specification is applied directly or indirectly in other relevant technologies Field is included within the scope of the present invention.

Claims (9)

1. a kind of high viscosity composite modified asphalt, it is characterised in that: it includes following raw material component:
500 parts of matrix pitch, 29.1-43.2 parts of rubber powder, 17.0-24.9 parts of carboxylic styrene butadiene latex, polyphosphoric acids 8.7-18.9 Part, 9.4-17.9 parts of epoxy resin, 9.4-17.9 parts of curing agent.
2. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: it is by following raw material group It is grouped as: 500 parts of matrix pitch, 41.7-43.2 parts of rubber powder, 17.0-24.9 parts of carboxylic styrene butadiene latex, polyphosphoric acids 10.0- 10.3 parts, 9.4-14.1 parts of epoxy resin, 9.4-14.1 parts of curing agent.
3. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: the matrix pitch is No. 90 bases Matter pitch, 25 DEG C of needle penetration 85dmm, 54.2 DEG C of softening point.
4. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: the mesh number of the rubber powder is 60 Mesh.
5. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: the carboxylic styrene butadiene latex is consolidated Content is 48%.
6. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: the epoxy resin is bisphenol-A Type epoxy resin.
7. a kind of high viscosity composite modified asphalt as described in claim 1, it is characterised in that: the curing agent is polyamide resin Rouge.
8. a kind of high viscosity composite modified asphalt as claimed in claim 7, it is characterised in that: the curing agent is low molecular weight polycaprolactone Amide resin.
9. a kind of prepare such as a kind of method of high viscosity composite modified asphalt of any of claims 1-8, feature Be: it the following steps are included:
S1, raw material preparation
Matrix pitch, rubber powder, carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent are weighed by weight ratio;
S2, matrix pitch pretreatment
Matrix pitch is placed in high-speed shearing machine, being heated to 140-160 DEG C makes matrix pitch in molten state, and shear rate is 10-20min is sheared under 2500-3500r/min;
S3, rubber powder is added into the matrix pitch handled through step S2 and in 170-180 DEG C, shear rate 4500-5500r/ 30-40min is sheared under min;Then sequentially add carboxylic styrene butadiene latex, polyphosphoric acids, epoxy resin and curing agent and 170-180 DEG C, shear 39-51min under shear rate 4500-5500r/min, asphalt mixture can be obtained;
S4, the asphalt mixture as made from step S3 is kept the temperature into 30-50min at 130-140 DEG C, it is compound that high viscosity can be obtained Pitch.
CN201811611194.3A 2018-12-27 2018-12-27 A kind of high viscosity composite modified asphalt and preparation method thereof Pending CN109694585A (en)

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Cited By (3)

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CN114015250A (en) * 2021-11-22 2022-02-08 河北雄安京德高速公路有限公司 Rubber modified asphalt for long-life pavement, and preparation method, preparation equipment and application thereof
NL2028906A (en) 2020-09-08 2022-05-09 Univ Fuzhou A high-tenacity modified asphalt with SBS/SBR and polyphosphoric acid and its preparation method
CN115323881A (en) * 2022-07-21 2022-11-11 北京通途技术有限公司 Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2028906A (en) 2020-09-08 2022-05-09 Univ Fuzhou A high-tenacity modified asphalt with SBS/SBR and polyphosphoric acid and its preparation method
CN114015250A (en) * 2021-11-22 2022-02-08 河北雄安京德高速公路有限公司 Rubber modified asphalt for long-life pavement, and preparation method, preparation equipment and application thereof
CN115323881A (en) * 2022-07-21 2022-11-11 北京通途技术有限公司 Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture

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