CN104629150A - Anti-rut agent composition for high-performance composite polyolefin asphalt mixture and preparation method thereof - Google Patents
Anti-rut agent composition for high-performance composite polyolefin asphalt mixture and preparation method thereof Download PDFInfo
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- CN104629150A CN104629150A CN201510075454.XA CN201510075454A CN104629150A CN 104629150 A CN104629150 A CN 104629150A CN 201510075454 A CN201510075454 A CN 201510075454A CN 104629150 A CN104629150 A CN 104629150A
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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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- 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
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- 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
The invention discloses an anti-rut agent composition for a high-performance composite polyolefin asphalt mixture and a preparation method of the anti-rut agent composition. The composition comprises the components in percent by weight: 5-15 percent of polypropylene, 5-25 percent of low-density polyethylene, 5-25 percent of high-density polyethylene, 5-25 percent of linear low-density polyethylene, 1-10 percent of EVA, 0.5-5 percent of dicyclopentadiene epoxy resins, 0.5-2 percent of oleic acid, 0.5-2 percent of linoleic acid, 0.5-2 percent of palmitic acid, 0.5-2 percent of palmitic acid butyl ester, 0.1-2 percent of polyoxyethylene sorbitan monooleate, 0.5-2 percent of oxidized polyethlene wax, 0.1-1 percent of antioxidant (1010), 0.1-1 percent of antioxidant (168) and 0.1-1 percent of coupling agent. The preparation method comprises the steps of uniformly mixing all components by using a high-speed mixing machine and performing mixed granulation by using a high-shear type double-screw extrusion machine. The anti-rut agent composition is used in the asphalt mixture, so that the anti-rut property, the constant water temperature property and the low-temperature anti-cracking performance of the asphalt mixture can be improved, the mixing of the original asphalt mixture is maintained, and the comprehensive performance of the asphalt mixture is improved.
Description
Technical field
The present invention relates to a kind of macromolecular material of modifying asphalt, be specially compound polyolefin pitch anti-rut agent composition and method of making the same, be mainly used in road bitumen.
Background technology
Along with the fast development of China's economy and the increase day by day of traffic flow, require more and more higher to the use properties of road, the road surface of usual use plain asphalt compound making, along with the volume of traffic and driving load-carrying continuous increase, embrittlement can be there is under the low temperature of road surface, easily occur rut under high temperature, poor water stability easily causes road surface Moisture Damage simultaneously.In order to improve these performances of pitch; economize on resources and protection of the environment; extend the work-ing life on road surface; improve high temperature rutting resistance, the low-temperature cracking-resistance on road surface; improve the water stability on road surface, reduce maintenance costs, improve driving comfort level; carry out a large amount of research work both at home and abroad, have found the new way of a large amount of asphalt modification.In asphalt, wherein add anti-rut agent etc. makes polymer modified asphalt have good high temperature anti-rut behavior, is widely applied.But current polymkeric substance anti-rut agent has, and high and low temperature performance can not be taken into account, low-temperature performance and water stability improve the defects such as not enough relatively.
Summary of the invention
The invention provides a kind of compound polyolefin pitch anti-rut agent composition and method of making the same, it is characterized in that comprising following component:
The preferred polypropylene (PP) adopted is homo-polypropylene or Co-polypropylene, melt flow index (MI) between 1 ~ 40g/10min, preferably the injection grade polypropylene of 3 ~ 10g/10min or polypropylene reclaimed material further.
The melt flow index (MI) of the preferred Low Density Polyethylene (LDPE) adopted is between 1 ~ 10g/10min; The melt flow index (MI) of the linear low density of polyethylene (LLDPE) adopted is between 0.1 ~ 5g/10min; The melt flow index (MI) of the high density polyethylene(HDPE) (HDPE) adopted between 0.1 ~ 40g/10min, the more preferably HDPE of 0.5 ~ 10g/10min.
The melt flow index (MI) of the preferred ethylene-vinyl acetate copolymer (EVA) adopted between 1 ~ 40g/10min, the more preferably EVA of 3 ~ 10g/10min; VA content is at 20 ~ 30wt%.
Preferred DCPD-containing epoxy resin oxirane value is 0.2 ~ 0.5mol/g.
The softening temperature of the oxidized polyethlene wax (OPE) of preferred employing is between 90 ~ 115 DEG C, and molecular weight is between 1000 ~ 5000.
The coupling agent of preferred employing is silane coupling agent, more preferably γ-aminopropyl triethoxysilane (KH-550) or γ-glycydoxy Trimethoxy silane (KH-560) or γ-methacryloxypropyl trimethoxy silane (KH-570).
The preferred oxidation inhibitor adopted is the mixture of antioxidant 1010 and 168, its mass ratio at 1:1 ~ 1:5, preferred 1:2.
The preparation method of above-mentioned composition is: first join in high-speed mixer by formula rate, high-speed mixing 1 minute, then mixture is joined melting mixing in screw extrusion press, and tank cools, and dicing machine pelletizing, then weighs, packs, puts in storage.The screw extrusion press used can be peg type single screw extrusion machine, twin screw extruder, reciprocating single-bolt extruder, be preferably twin screw extruder, its screw slenderness ratio is 32 ~ 36, screw combinations is high shear rate array mode, and the temperature of double-screw extruding pelletizing is between 150 ~ 220 DEG C.
Technique effect:
The present invention is ground-breaking to be chosen different polyolefine and carries out compound, and add expanding material, coupling agent etc., to there is the polyolefine of different performance by obtaining the high temperature performance that composition comprehensively can promote compound after the specific proportioning of the present invention and complete processing compound, realize the viscosity reducing polymer modified asphalt, improve consistency and the cohesive force of polymkeric substance and asphalt building stones, thus Rut resistance and the over-all properties of pitch and road can be improved.
Adopt polypropylene can improve the high-temperature behavior of pitch, as improved softening temperature etc.; Adopt high and low density compound can take into account the high and low temperature performance of pitch, thus improve the over-all properties of pitch; Add EVA and can improve the low-temperature performance of pitch and the consistency of polymkeric substance and pitch further; The oleic acid adopted, linolic acid, Palmiticacid, Palmiticacid butyl ester, polyoxyethylene sorbitan monooleate can reduce the viscosity of pitch, increase the consistency of polyolefine and pitch, reduce the mix temperature of asphalt; The cohesive force of pitch and building stones can be improved by adding epoxy resin, thus improve the over-all properties of asphalt; OPE can increase the mobility of pitch, improves the processibility of pitch; Add the bonding force that silane coupling agent can improve polymkeric substance, pitch and gather materials; Because polyolefine easily produces oxidative degradation in the course of processing, therefore must add oxidation inhibitor to stop or reduce polyolefinic oxidative degradation.The present invention not only proposes new rut agent and prepares thinking, and by developing suitable proportioning and processing condition, rut agent of the present invention can be passed extraordinary over-all properties.
Polyolefine high performance asphalt anti-rut agent prepared by the present invention, can improve the over-all properties of asphalt, process easy simultaneously, can use in the fields such as road bitumen.
Embodiment
For ease of understanding, below in conjunction with embodiment, specific embodiment of the invention process is described further.
Under be classified as sample preparation technology in embodiment:
In laboratory, mixing polyolefine high performance asphalt main flow is: first by polyolefin modifiers and hot building stones dry mixing 30s, be dispersed in mineral aggregate to make polyolefin modifiers.Then pitch is added according to predetermined volume, mix and stir 90s; Finally add breeze, then mix and stir 90s.Temperature controls to carry out according to table 1.
Table 1 laboratory experiment polyolefin modifiers and compound mix and stir, mold temperature controling parameters
| Mineral heating up temperature | 180～190℃ |
| 70# asphalt heating temperature | 150～160℃ |
| Asphalt mixes and stirs temperature | 175～180℃ |
| Hit reality and rut mold temperature | 165℃ |
The bitumen aggregate ratio of pitch and building stones is 4.4; Building stones gradation types is AC-20, and anti-rut agent addition of the present invention is 0.5% of asphalt; Detect the asphalt of embodiment 1, embodiment 2 and embodiment 3, the following industry standard of promulgating according to Department of Transportation of the People's Republic of China (PRC) 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 main detection asphalt, Testing index comprises: porosity, pitch saturation ratio, 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 formula are in table 1.
The compound polyolefin pitch anti-rut agent composite formula table of table 1 embodiment 1-3
Preparation method: first join in high-speed mixer by formula rate, high-speed mixing 1 minute, again mixture is joined melting mixing in twin screw extruder, its screw slenderness ratio is 32 ~ 36, screw combinations is high shear rate array mode, and the temperature of double-screw extruding pelletizing is between 150 ~ 220 DEG C; Then tank cooling, dicing machine pelletizing, weighs, packaging, warehouse-in.
The compound polyolefin asphalt modifying agent composition mixed granulation process parameter of table 2 embodiment 1-3
The performance of comparative example and embodiment 1-3 is in table 3.
The performance (parameter is 5 ‰ of asphalt total mass) of table 3 compound polyolefin high performance asphalt
As can be seen from Table 3, add compound polyolefin properties-correcting agent of the present invention in asphalt pitch after, the high temperature energy anti-rut behavior of asphalt, water stabilizing and crack resistance at low-temperature are all significantly improved and enhanced.The asphalt dynamic stability of embodiment 3 reaches up to ten thousand times, and crack resistance at low-temperature improves many than plain asphalt compound simultaneously, and water stability has had especially and obviously improves, and its freeze-thaw split strength ratio and residual stability are than all reaching more than 99%.This illustrates, after adding compound polyolefin anti-rut agent of the present invention, asphalt high temperature performance can be taken into account, and is improved simultaneously, and water stability significantly improves especially.And large impact is not produced on the blending craft of asphalt, totally improve the over-all properties of asphalt.
The above is only the preferred embodiment of the present invention, adopts aforesaid preferred processing condition, mass ratio and different additive component to carry out organizing test more, all can obtain the result of above-mentioned improvement.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a high-performance compound polyolefin Asphalt mixture anti-rut agent composition, is characterized in that comprising following component:
2. composition according to claim 1, it is characterized in that described polypropylene is homo-polypropylene or Co-polypropylene, melt flow index is between 1 ~ 40g/10min.
3. composition according to claim 1, is characterized in that the melt flow index of described Low Density Polyethylene is between 0.1 ~ 10g/10min; The melt flow index of described linear low density of polyethylene is between 0.1 ~ 5g/10min; The melt flow index of described high density polyethylene(HDPE) is between 0.1 ~ 40g/10min.
4. composition according to claim 1, is characterized in that the melt flow index of described ethylene-vinyl acetate copolymer is that 1 ~ 40g/10min, VA content is at 20 ~ 30wt%.
5. composition according to claim 1, is characterized in that described DCPD-containing epoxy resin oxirane value is 0.2 ~ 0.5mol/g.
6. composition according to claim 1, it is characterized in that the softening temperature of described oxidized polyethlene wax is between 90 ~ 115 DEG C, molecular weight is between 1000 ~ 5000.
7. composition according to claim 1, is characterized in that described coupling agent is silane coupling agent.
8. composition according to claim 1, it is characterized in that described oxidation inhibitor is the mixture of antioxidant 1010 and 168, its mass ratio is at 1:1 ~ 1:5.
9. according to the preparation method of the arbitrary described composition of claim 1-8; it is characterized in that comprising the following steps: first each component is joined in high-speed mixer, high-speed mixing 0.5-2 minute, then mixture is joined melting mixing in screw extrusion press; tank cools, dicing machine pelletizing.
10. preparation method according to claim 9, it is characterized in that described screw extrusion press is peg type single screw extrusion machine, twin screw extruder or reciprocating single-bolt extruder, screw slenderness ratio is 32 ~ 36, screw combinations is high shear rate array mode, and the temperature of double-screw extruding pelletizing is between 150 ~ 220 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174788A (en) * | 2015-09-25 | 2015-12-23 | 辽宁省交通科学研究院 | Bituminous concrete anti-rut agent and preparation method thereof |
| CN108395599A (en) * | 2017-02-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of asphalt concrete additive agent and preparation method thereof |
| 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 |
| EP4017914A4 (en) * | 2019-08-06 | 2023-05-03 | Public Joint Stock Company "Sibur Holding" | Polyethylene composition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102942793A (en) * | 2012-11-21 | 2013-02-27 | 江苏博特新材料有限公司 | High modulus asphalt modifier and preparation method and application thereof |
| CN103525101A (en) * | 2013-09-17 | 2014-01-22 | 镇江金阳道路材料科技发展有限公司 | Novel asphalt mixture modifier capable of being warmly mixed as well as preparation method thereof and preparation method of mixture thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942793A (en) * | 2012-11-21 | 2013-02-27 | 江苏博特新材料有限公司 | High modulus asphalt modifier and preparation method and application thereof |
| CN103525101A (en) * | 2013-09-17 | 2014-01-22 | 镇江金阳道路材料科技发展有限公司 | Novel asphalt mixture modifier capable of being warmly mixed as well as preparation method thereof and preparation method of mixture thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174788A (en) * | 2015-09-25 | 2015-12-23 | 辽宁省交通科学研究院 | Bituminous concrete anti-rut agent and preparation method thereof |
| 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 |
| CN108395599A (en) * | 2017-02-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of asphalt concrete additive 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 |
| EP4017914A4 (en) * | 2019-08-06 | 2023-05-03 | Public Joint Stock Company "Sibur Holding" | 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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