CN104629150B - A kind of high-performance compound polyolefin Asphalt mixture anti-rut agent composition and preparation method thereof - Google Patents
A kind of high-performance compound polyolefin Asphalt mixture anti-rut agent composition and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2611—Polyalkenes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
A kind of high-performance compound polyolefin Asphalt mixture anti-rut agent composition and preparation method thereof, said composition includes：5~15wt% of polypropylene, 5~25wt% of low density polyethylene (LDPE), 5~25wt% of high density polyethylene (HDPE), 5~25wt% of linear low density of polyethylene, EVA1~10wt%, 0.5~5wt% of DCPD-containing epoxy resin, 0.5~2wt% of oleic acid, 0.5~2wt% of linoleic acid, 0.5~2wt% of palmitic acid, 0.5~2wt% of palmitin acid butyl ester, 0.1~2wt% of polyoxyethylene sorbitan monooleate, 0.5~2wt% of OPE, the 0.1~1wt% of antioxidant (1010), antioxidant (168) 0.1~1wt%, 0.1~1wt% of coupling agent.Its preparation method is that each component high-speed mixer is well mixed, and mixing granulation is carried out using high shear type double screw extruder.Its Rut resistance, water stability energy and crack resistance at low-temperature for being used in asphalt to improve asphalt, maintains original asphalt mixture mixing, improves the combination property of asphalt.
Description
Technical field
The present invention relates to a kind of macromolecular material of modified pitch, specially compound polyolefin pitch anti-rut agent combination
Thing and preparation method thereof, is mainly used in road asphalt.
Background technology
With the increasingly increase of the fast-developing and magnitude of traffic flow of China's economy, the performance to road is required increasingly
Height, usually using the road surface of plain asphalt compound making, with being continuously increased for the volume of traffic and driving load-carrying, under the low temperature of road surface
Embrittlement can occur, easily rut occur under high temperature, while poor water stability easily causes road surface Moisture Damage.In order to improve pitch
These performances, economize on resources and environmental protection, extend the service life on road surface, improve high temperature rutting resistance, the low temperature on road surface
Crack resistance, improves the water stability on road surface, reduces maintenance costs, improves driving comfort level, and substantial amounts of research has been carried out both at home and abroad
Work, have found the new way of a large amount of asphalt modifications.Anti-rut agent etc. is added to cause that polymer changes wherein in asphalt
Property pitch has preferable high temperature anti-rut behavior, is widely applied.But current polymer anti-rut agent has high and low
Warm nature can be taken into account, cryogenic property and water stability improve the defects such as deficiency relatively.
The content of the invention
The present invention provides a kind of compound polyolefin pitch anti-rut agent composition and preparation method thereof, it is characterised in that include
Following component：
The polypropylene (PP) for preferably being used is HOPP or COPP, and melt flow index (MI) is 1
Between~40g/10min, further preferred is the injection grade polypropylene or polypropylene reclaimed material of 3~10g/10min.
The melt flow index (MI) of the low density polyethylene (LDPE) (LDPE) for preferably being used is between 1~10g/10min；
The melt flow index (MI) of the linear low density of polyethylene (LLDPE) for being used is between 0.1~5g/10min；Used
The melt flow index (MI) of high density polyethylene (HDPE) (HDPE) between 0.1~40g/10min, more preferably 0.5~
The HDPE of 10g/10min.
The melt flow index (MI) of the ethylene-vinyl acetate copolymer (EVA) for preferably being used is in 1~40g/
Between 10min, the more preferably EVA of 3~10g/10min；VA contents are in 20~30wt%.
Preferred DCPD-containing epoxy resin epoxide number is 0.2~0.5mol/g.
The softening point of the preferred OPE (OPE) for using between 90~115 DEG C, molecular weight 1000~
Between 5000.
The preferred coupling agent for using is silane coupler, more preferably gamma-aminopropyl-triethoxy-silane (KH-
Or γ-glycydoxy trimethoxy silane (KH-560) or γ-methacryloxypropyl trimethoxy 550)
Base silane (KH-570).
The antioxidant for preferably being used is antioxidant 1010 and 168 mixture, and its mass ratio is 1：1~1：5, preferably
1：2.
The preparation method of above-mentioned composition is：First it is added in high-speed mixer by formula rate, mixed at high speed 1 minute,
Melting mixing in screw extruder is added mixture to again, and then tank cooling, pelleter pelletizing is weighed, packs, is put in storage.
The screw extruder for being used can be peg type single screw extrusion machine, double screw extruder, reciprocating single-bolt extruder, it is excellent
Elect double screw extruder as, its screw slenderness ratio is 32~36, screw combinations are high-rate of shear combination, twin-screw extrusion
The temperature of granulation is between 150~220 DEG C.
Technique effect：
The different polyolefin of the ground-breaking selection of the present invention are combined, and add bulking agent, coupling agent etc., will be with not
With performance polyolefin by the specific proportioning of the present invention and processing technology it is compound after obtain composition and can comprehensively be lifted
The high temperature performance of compound, realizes reducing the viscosity of polymer modified asphalt, improves polymer with asphalt building stones
Compatibility and cohesive force, so as to the Rut resistance and combination property of pitch and road can be improved.
The high-temperature behavior of pitch can be improved using polypropylene, softening point is such as improved；Using that high and low density is compound can be with
The high and low temperature performance of pitch is taken into account, so as to improve the combination property of pitch；Adding EVA can further improve the low temperature of pitch
The compatibility of performance and polymer and pitch；The oleic acid of use, linoleic acid, palmitic acid, palmitin acid butyl ester, polyoxyethylene mountain
Pears alcohol monoleate can reduce the viscosity of pitch, increase the compatibility of polyolefin and pitch, reduce the mix of asphalt
Temperature；The cohesive force of pitch and building stones can be improved by adding epoxy resin, so as to improve the combination property of asphalt；
OPE can increase the mobility of pitch, improve the processability of pitch；Add silane coupler can improve polymer, pitch with
The adhesion gathered materials；Because polyolefin is also easy to produce oxidative degradation in process, it is therefore necessary to add antioxidant preventing or
Reduce the oxidative degradation of polyolefin.The present invention not only proposes new rut agent and prepares thinking, and suitable by developing
Proportioning and process conditions so that rut agent of the invention can pass to obtain extraordinary combination property.
Polyolefin high performance asphalt anti-rut agent prepared by the present invention, can improve the synthesis of asphalt
Performance, while simple processing, can use in the fields such as road asphalt.
Specific embodiment
For ease of understanding, specific implementation process of the invention is described further with reference to embodiment.
Under be classified as sample preparation technology in embodiment：
In laboratory, mixing polyolefin high performance asphalt main flow is：First by polyolefin modifiers and hot building stones
Dry mixing 30s, so that polyolefin modifiers are dispersed in mineral aggregate.Then pitch is added according to predetermined volume, mixes and stirs 90s；
Miberal powder is eventually adding, then mixes and stirs 90s.Temperature control is carried out according to table 1.
The laboratory experiment polyolefin modifiers of table 1 are mixed and stirred with compound, forming temperature control parameter
| Mineral heating up temperature | 180~190 DEG C |
| 70# asphalt heating temperatures | 150~160 DEG C |
| Asphalt mixes and stirs temperature | 175~180 DEG C |
| Hit reality and rut forming temperature | 165℃ |
Pitch is 4.4 with the bitumen aggregate ratio of building stones；Building stones gradation types are AC-20, and anti-rut agent addition of the present invention is drip
The 0.5% of blue or green compound；Asphalt detection to embodiment 1, embodiment 2 and embodiment 3, according to the People's Republic of China (PRC)
The following professional standard that Department of Transportation promulgates is carried out：
1、《Standard specification for construction and acceptance of highway asphalt pavement》JTG F40—2004
2、《Highway engineering pitch and Asphalt Mixture Experiment code》JTG E20—2011
Marshall performance, water stability, the high temperature performance of asphalt are predominantly detected, Testing index includes：Hole
Rate, pitch saturation degree, stability, flow valuve, residual stability, freeze-thaw split retained strength ratio, rut experiment dynamic stability.
Comparative example and embodiment 1-3
Comparative example and embodiment 1-3 formulas are shown in Table 1.
The compound polyolefin pitch anti-rut agent composite formula table of the embodiment 1-3 of table 1
Preparation method：First it is added in high-speed mixer by formula rate, mixed at high speed 1 minute, then is fed the mixture into
The melting mixing in double screw extruder, its screw slenderness ratio is 32~36, and screw combinations are high-rate of shear combination, double
The temperature of Screw Extrusion granulation is between 150~220 DEG C；Then tank cooling, pelleter pelletizing is weighed, and is packed, storage.
The compound polyolefin asphalt modifying agent composition mixed granulation process parameter of the embodiment 1-3 of table 2
The performance of comparative example and embodiment 1-3 is shown in Table 3.
The performance (parameter is the 5 ‰ of asphalt gross mass) of the compound polyolefin high performance asphalt of table 3
From table 3 it can be seen that after compound polyolefin modifying agent of the invention is added in asphalt pitch, pitch is mixed
High temperature energy anti-rut behavior, water stabilizing and the crack resistance at low-temperature for closing material are all significantly improved and enhanced.Embodiment 3
Asphalt dynamic stability reaches up to ten thousand times, while crack resistance at low-temperature improves many than plain asphalt compound, water stabilization
Property has been even more and obviously improve, and its freeze-thaw split strength ratio and residual stability ratio all reach more than 99%.This explanation,
After adding compound polyolefin anti-rut agent of the invention, asphalt high temperature performance can be taken into account, while be improved,
Water stability is even more and significantly improves.And the blending craft to asphalt does not produce big influence, totally improves pitch
The combination property of compound.
The above is only the preferred embodiment of the present invention, using foregoing preferred processing condition, mass ratio and difference
Additive component carries out multigroup experiment, can obtain the result of above-mentioned improvement.It should be pointed out that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of high-performance compound polyolefin Asphalt mixture anti-rut agent composition, it is characterised in that comprising following component：
The polypropylene be HOPP or COPP, melt flow index between 1~40g/10min,
The melt flow index of the low density polyethylene (LDPE) is between 0.1~10g/10min；The linear low density of polyethylene
Melt flow index is between 0.1~5g/10min；The melt flow index of the high density polyethylene (HDPE) is in 0.1~40g/
Between 10min,
The melt flow index of the ethylene-vinyl acetate copolymer is 1~40g/10min, VA contents 20~
30wt%,
The DCPD-containing epoxy resin epoxide number is 0.2~0.5mol/g,
Between 90~115 DEG C, molecular weight is between 1000~5000 for the softening point of the OPE.
2. composition according to claim 1, it is characterised in that the coupling agent is silane coupler.
3. the preparation method of composition according to claim 1 and 2, it is characterised in that comprise the following steps：First by each group
Divide and be added in high-speed mixer, mixed at high speed 0.5-2 minutes, then melting mixing in screw extruder is added mixture to,
Tank is cooled down, pelleter pelletizing.
4. preparation method according to claim 3, it is characterised in that the screw extruder is peg type Single screw extrusion
Machine, double screw extruder or reciprocating single-bolt extruder, screw slenderness ratio are 32~36, and screw combinations are high-rate of shear group
Conjunction mode, the temperature of double-screw extruding pelletizing is between 150~220 DEG C.
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| CN109266024A (en) * | 2017-07-18 | 2019-01-25 | 大连韵海贸易有限公司 | A kind of bituminous pavement high-modulus rut agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105174788B (en) * | 2015-09-25 | 2017-03-29 | 辽宁省交通科学研究院 | A kind of bituminous concrete anti-rut agent and preparation method thereof |
| CN108395599B (en) * | 2017-02-07 | 2021-03-05 | 中国石油化工股份有限公司 | Asphalt concrete additive and preparation method thereof |
| CN114269827B (en) * | 2019-08-06 | 2024-08-23 | 公共型股份公司希布尔控股 | Polyethylene composition |
| CN112194905A (en) * | 2020-09-15 | 2021-01-08 | 重庆质能环保科技有限公司 | Asphalt thermal regeneration modifier and preparation method thereof |
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| CN102942793B (en) * | 2012-11-21 | 2014-12-10 | 江苏苏博特新材料股份有限公司 | High modulus asphalt modifier and preparation method and application thereof |
| CN103525101B (en) * | 2013-09-17 | 2016-10-05 | 江苏金阳新材料科技有限公司 | A kind of can the preparation method of novel asphalt mixed material modifier, its preparation method and compound thereof of warm mix |
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| CN109266024A (en) * | 2017-07-18 | 2019-01-25 | 大连韵海贸易有限公司 | A kind of bituminous pavement high-modulus rut agent |
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