CN105153532A - Modified asphalt master batch and preparing method and application thereof - Google Patents
Modified asphalt master batch and preparing method and application thereof Download PDFInfo
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- 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
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08L2205/00—Polymer mixtures characterised by other features
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- 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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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- 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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- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/50—Inorganic non-macromolecular ingredients
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- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/60—Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye
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- C—CHEMISTRY; METALLURGY
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- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/86—Polymers containing aliphatic hydrocarbons only, e.g. polyethylene, polypropylene or ethylene-propylene-diene copolymers
Abstract
The invention relates to the technical field of modified asphalt and particularly provides a modified asphalt master batch. The modified asphalt master batch is prepared from, by weight, 40-60 parts of EVA, 10-20 parts of extract oil of aromatic hydrocarbon, 5-10 parts of rubber powder, 5-10 parts of organic wax, 5-15 parts of polyethylene, 3-5 parts of stearic acid, 2-5 parts of plasticizer, 2-4 parts of nano-particle and 0.1-0.5 part of antioxidant. The invention further provides a preparing method and application of the modified asphalt master batch. According to the modified asphalt master batch, asphalt is modified by organically combining the EVA, the rubber powder, the organic wax, the nano-particles and other raw materials, the high-low temperature performance and stability of the asphalt can be remarkably improved, separation of the asphalt in the use process can be effectively relieved through the good compatibility with the asphalt, and the good modified effect is achieved; the production process is simple, use is convenient, and quick and large-scale production of modification of the asphalt can be achieved.
Description
[technical field]
The present invention relates to modified asphalt technology field, be specifically related to a kind of modified asphalt agglomerate, its preparation method and application.
[background technology]
Bituminous pavement is a kind of semi-rigid pavement, have damping comfortable, be easy to the features such as maintenance, be the first-selected road surface form of current road.Along with the increase of the volume of traffic and traffic load, traffic speed, and extreme weather, as increasing gradually of extremely cold and very hot weather, people propose harsher requirement to urban road laying bituminous material.And existing plain asphalt is easy to crack when low temperature, easily softens during high temperature and produce rut, can not meet the actual demand of road.
Various modified asphalt technology arises at the historic moment, wherein, SBS (StyreneicBlockCopolymers, SBS) modifying asphalt is due to its outstanding mechanical property and high and low temperature resistance, elastic recovery properties, become the modifying asphalt that application is maximum, account for more than 70% of whole modifying asphalt demand.But because technical threshold is low, the producer producing SBS modifying asphalt gets more and more, and its quality is uneven, even a lot of unit in charge of construction oneself produces; In addition, SBS modification will reach the ratio that good performance need adds at least 4.5%, considers cost factor, usually understands the auxiliary agent of some low costs of admixture in use, the actual volume of SBS in pitch is fewer and feweri, and high cost makes it apply and receives certain restriction; Further, the complex manufacturing of SBS modifying asphalt, need through multiple working procedures such as grinding, swelling, growth, high-temperature storage, high temperature transports, the whole production cycle is long; In addition, the limited compatibility of SBS and pitch, SBS modifying asphalt is temporary transient stabilising system, once high-temperature storage overlong time, just can produce segregation, reduces the performance of SBS modifying asphalt.
Therefore, although SBS modifying asphalt is effective, every Testing index can meet specification requirements, and quality during its actual use is still subject to query in the industry.Given this, explore that a kind of modified effect is good, production technique be simple, steady quality, storage and easy to use, lower-cost modified asphalt agglomerate, its preparation method and application most important.
[summary of the invention]
The technical problem to be solved in the present invention is to provide that a kind of modified effect is good, production technique is simple, steady quality, storage and easy to use, lower-cost modified asphalt agglomerate, its preparation method and application.
The present invention adopts following technical scheme:
A kind of modified asphalt agglomerate, comprises the component of following weight ratio: 40-60 part EVA, 10-20 part aromatic hydrocarbons extracts oil, 5-10 part rubber powder, the organic wax of 5-10 part, 5-15 part polyethylene, 3-5 part stearic acid, 2-5 part softening agent, 2-4 part nano particle and 0.1-0.5 part oxidation inhibitor out.
Further, in described EVA, the content of VA is 14%-28%, and the fusing point of described EVA is 70 DEG C-90 DEG C.
Further, at least one that described aromatic hydrocarbons extraction oil is furfural extract oil, rubber extraction is oily and subtract in three lines extraction oil.
Further, described rubber powder is 30-60 object waste tire rubber powder.
Further, described organic wax is at least one in PE wax, PP wax, PVC wax, Microcrystalline Wax, and described Microcrystalline Wax is 70
#-90
#.
Further, described polyethylene is Low Density Polyethylene, and described oxidation inhibitor is at least one in antioxidant 1010, antioxidant 1076, oxidation inhibitor 164.
Further, described softening agent is epoxy soybean oil.
Further, described nano particle is at least one in nano-calcium carbonate, nano titanium oxide, nano zine oxide.
Prepare a method for above-mentioned modified asphalt agglomerate, be included in high speed mixer and add EVA, polyethylene, stearic acid and organic wax, mix; Add aromatic hydrocarbons and extract oil and softening agent out, mix; Add rubber powder, nano particle and oxidation inhibitor, mix; By the material that mixes by Double-screw extruding pelletization and by dicing machine pelletizing.
An application for modified asphalt agglomerate, by weight percentage, is heated to 170 DEG C-180 DEG C by 90-99 part matrix pitch, adds the above-mentioned modified asphalt agglomerate of 1-10 part, be uniformly mixed 1h-2h, make modifying asphalt.
Compared with prior art, beneficial effect of the present invention is:
1. modified asphalt agglomerate of the present invention can be used alone to carry out modification to pitch, by the raw materials such as EVA, rubber powder, organic wax and nano particle are organically combined, high temperature performance and the stability of pitch can be significantly improved, pitch segregation in use effectively can be alleviated with the excellent compatibility of pitch, improve the indexs such as the penetration degree of modifying asphalt, softening temperature, ductility, flash-point, improve kinematic viscosity and the freeze-thaw split intensity of modifying asphalt, there is good modified effect.
2. the production technique of modified asphalt agglomerate of the present invention is simple, and do not need extra asphalt modification device, cost is lower, and obtained modified asphalt agglomerate is particulate state, is easy to packed and transported and storage, steady quality.
3. modified asphalt agglomerate of the present invention is easy to use, is melting in the pitch of heating, good with bitumen compatibility, is easy to stirring and evenly mixing, without the need to colloidal mill or high-speed shearing equipment, can realize the quick of asphalt modification and large-scale production.
[embodiment]
The modified asphalt agglomerate of the application, comprises the component of following weight ratio: 40-60 part EVA, 10-20 part aromatic hydrocarbons extracts oil, 5-10 part rubber powder, the organic wax of 5-10 part, 5-15 part polyethylene, 3-5 part stearic acid, 2-5 part softening agent, 2-4 part nano particle and 0.1-0.5 part oxidation inhibitor out.
Wherein, EVA (ethylene-vinylacetatecopolymer, ethylene-vinyl acetate copolymer) as the key ingredient improving high temperature performance of asphalt and low-temperature performance, its accounting is more, the modifying asphalt high-temperature behavior finally made and low-temperature performance better.Particularly, in EVA, the content of VA (vinylacetate, vinyl acetate between to for plastic) is 14%-28%, and fusing point is 70 DEG C-90 DEG C, and its low melting point presents molten state rapidly after can ensureing heating, is easy to dispersed.
At least one that aromatic hydrocarbons extraction oil is furfural extract oil, rubber extracts oil out and subtract in three lines extraction oil, this aromatic hydrocarbons extracts oil out as the liquid phase medium environment of modified asphalt agglomerate in preparation process, be the liquid phase carrier of the powdered form raw materials such as stearic acid, organic wax, nano particle and rubber powder, effectively can improve the consistency between asphalt modification master batch and pitch.
Rubber powder is 30-60 object waste tire rubber powder, flexible when being mainly used in improving the low temperature of pitch, improves the anti-fatigue performance of pitch.
Organic wax is at least one in PE wax, PP wax, PVC wax, Microcrystalline Wax, and wherein Microcrystalline Wax can select 70
#-90
#, particularly, can 70 be selected
#, 75
#, 80
#, 85
#, 90
#the Microcrystalline Wax of specification.Organic wax mainly plays the effect of interior lubrication, and what whole modified asphalt agglomerate system was mixed is more even, and reduces asphalt viscosity, optimizes the mix of follow-up asphalt, paves and roll, reduce exhaust gas emission, reduce energy consumption.
Polyethylene is Low Density Polyethylene, is mainly used in the degree of crystallinity increasing modified asphalt agglomerate, makes modified asphalt agglomerate be easy to granulation, the high-temperature behavior of pitch can be improved simultaneously, but because the consistency of polyethylene and pitch is poor, therefore its consumption is unsuitable too many, otherwise will make the deteriorated flexibility of properties-correcting agent.
Stearic acid is mainly used in external lubrication, and is conducive to the abundant diffusion of nano particle, effectively reduces asphalt viscosity simultaneously, modified master batch and pitch can fully be mixed.
Oxidation inhibitor is at least one in antioxidant 1010, antioxidant 1076, oxidation inhibitor 164, be mainly used in the stability improving modified asphalt agglomerate, prevent resene feed material degradation, and energy thermal oxidation resistance, ozone-resistant, harmful metal ion suppression, antifatigue, absorption ultraviolet and freedom from cracking.
Softening agent is epoxy soybean oil, the plasticity-of resinous material in asphalt modification master batch can be significantly improved, make modified asphalt agglomerate be easy to processing, and epoxy soybean oil is as softening agent environmental protection, effectively can reduce the harm to operator and the pollution to environment.
Nano particle is at least one in nano-calcium carbonate, nano titanium oxide, nano zine oxide, for the formation of nanometer cross-linking point, to improve the mechanical property of modified asphalt agglomerate, increase the shock resistance of modified master batch, modified asphalt agglomerate is made to absorb more energy, to improve the snappiness of pitch.
The method of the above-mentioned modified asphalt agglomerate of preparation of the application, is included in high speed mixer and adds 40-60 part EVA, 5-15 part polyethylene, 3-5 part stearic acid and the organic wax of 5-10 part by weight, is formed and mixes fine particle; Add 10-20 part aromatic hydrocarbons and extract oil and 2-5 part softening agent out, mix, make particle surface enclose one deck liquid film; Add 5-10 part rubber powder, 2-4 part nano particle and 0.1-0.5 part oxidation inhibitor, mix, make powder be attached to particle surface as far as possible, the weight percent sum of above each component is 100%; By the material that mixes by Double-screw extruding pelletization and by dicing machine pelletizing.
The application of the modified asphalt agglomerate of the application, by weight percentage, is heated to 170 DEG C-180 DEG C by 90-99 part matrix pitch, adds the above-mentioned modified asphalt agglomerate of 1-10 part, be uniformly mixed 1h-2h, make modifying asphalt.Wherein the volume of modified asphalt agglomerate is larger, and asphalt modification effect is more obvious, and asphalt viscosity becomes large, and high temperature performance height is excellent; But volume is crossed senior general and caused the overall viscosity of pitch excessive, cause bitumen construction difficult and moulding not good; Volume is crossed young pathbreaker and is caused the modified effect of modified asphalt agglomerate to pitch not obvious, can not obviously give pitch excellent pavement performance.
Modified asphalt agglomerate of the present invention carries out modification by being organically combined by the raw materials such as EVA, rubber powder, organic wax and nano particle to pitch, high temperature performance and the stability of pitch can be significantly improved, effectively can alleviate pitch segregation in use with the excellent compatibility of pitch, there is good modified effect; Production technique is simple, easy to use, can realize the quick of asphalt modification and large-scale production.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.Except the actual conditions indicated, the experimental technique in embodiment all conveniently condition carries out.
Embodiment 1
In high speed mixer, first add 50 parts of EVA by weight, 10 parts of polyethylene, 10 parts of PE waxes, 3 parts of stearic acid mix, in the present embodiment, in EVA, the content of VA is 20%, polyethylene is Low Density Polyethylene, add 15 portions of furfural extract oils again, 2 parts of epoxy soybean oils mix, particle surface is made to enclose one deck liquid film, add 7 part of 50 order waste tire rubber powder, 2.5 parts of nano-calcium carbonates, 0.5 part of antioxidant 1010 subsequently to mix, make powder be attached to particle surface as far as possible.Finally by the material that mixes by Double-screw extruding pelletization, by dicing machine pelletizing, can modified asphalt agglomerate be obtained.
In the embody rule of the present embodiment, by weight getting 5 parts of modified asphalt agglomerates and 95 parts of matrix pitches respectively, in the present embodiment, matrix pitch used is 70# petroleum pitch.By this asphalt heating to 170 DEG C-180 DEG C, add modified asphalt agglomerate in proportion, be uniformly mixed 1h-2h, make modifying asphalt.The technical indicator of modifying asphalt is as shown in table 1.
The modified asphalt technology index that table 1 is prepared by modified asphalt agglomerate
As shown in Table 1, carry out modified by the modified asphalt agglomerate of the present embodiment to pitch, the indices of pitch all meets " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 requirement, the softening temperature of this modifying asphalt reaches 65 DEG C, ductility is much larger than the technical requirements of specification F40-2004, and the modified asphalt agglomerate of known the present embodiment has good modified effect.
According to specification F40-2004, with the modifying asphalt of above-mentioned preparation, with continuous dense bitumen compound Sup-20 for asphalt type, the gradation composition of the Superpave method of design designing asphalt mixture that code requirement F40-2004 requires and asphalt content, the technical indicator of asphalt is in table 2.
| Project | Technical requirements | Test-results | Test method |
| Asphalt content/% | —— | 4.2 | —— |
| Voidage/% | 4.0 | 4.0 | T 0706-2011 |
| Void in mineral aggregate/% | ≥13 | 13.5 | T 0705-2011 |
| Pitch saturation ratio/% | 65～75 | 68.2 | T 0705-2011 |
| Dynamic stability (60 DEG C, 0.7MPa)/(secondary/min) | ≥2800 | 6125 | T 0719-2011 |
| Freeze-thaw split strength ratio/% | ≥80 | 91 | T 0729-2011 |
| Low-temperature bending breaking strain (-10 DEG C, 5cm/min)/μ ε | ≥2000 | 3300 | T 0715-2011 |
Table 2Sup-20 asphalt technical indicator
Dynamic stability 6125 times/min as shown in Table 2, has exceeded general SBS modified asphalt mixture (general 3000 ~ 5000 times/min); Water stability freeze-thaw split strength ratio is 91%, and low-temperature bending breaking strain is 3300 μ ε, is all better than SBS modified asphalt mixture, and therefore the modified effect of this modified master batch is better than SBS modified effect.
Embodiment 2
In high speed mixer, by weight first to add 60 parts of EVA, 10 parts of polyethylene, 5 part 70
#microcrystalline Wax, 4 parts of stearic acid mix, in the present embodiment, in EVA, the content of VA is 14%, polyethylene is Low Density Polyethylene, add 10 parts of rubber extraction oil, 3.5 parts of epoxy soybean oils again to mix, make particle surface enclose one deck liquid film, add 5 part of 40 order waste tire rubber powder, 2 parts of nano titanium oxides, 0.5 part of antioxidant 1076 subsequently and mix, make powder be attached to particle surface as far as possible.Finally by the material that mixes by Double-screw extruding pelletization, by dicing machine pelletizing, can modified asphalt agglomerate be obtained.
In the embody rule of the present embodiment, by weight getting 5 parts of modified asphalt agglomerates and 95 parts of matrix pitches respectively.This matrix pitch is heated to 170 DEG C-180 DEG C, adds modified asphalt agglomerate in proportion, be uniformly mixed 1h-2h, make modifying asphalt.
Be agglutinate by above-mentioned obtained modifying asphalt, in accordance with China's " standard specification for construction and acceptance of highway asphalt pavement " F40-2004, with continuous dense bitumen compound Sup-20 for asphalt type, wherein modifying asphalt is 4.2% of mixture total weight amount.
Embodiment 3
In high speed mixer, first add 40 parts of EVA by weight, 15 parts of polyethylene, 6 parts of PP waxes, 5 parts of stearic acid mix, in the present embodiment, in EVA, the content of VA is 28%, polyethylene is Low Density Polyethylene, add 18 parts again and subtract that oil extracted out by three lines, 2 parts of epoxy soybean oils mix, particle surface is made to enclose one deck liquid film, add 10 part of 30 order waste tire rubber powder, 3.5 parts of nano-calcium carbonates, 0.5 part of antioxidant 1010 subsequently to mix, make powder be attached to particle surface as far as possible.Finally by the material that mixes by Double-screw extruding pelletization, by dicing machine pelletizing, can modified asphalt agglomerate be obtained.
In the embody rule of the present embodiment, by weight getting 5 parts of modified asphalt agglomerates and 95 parts of matrix pitches respectively.This matrix pitch is heated to 170 DEG C-180 DEG C, adds modified asphalt agglomerate in proportion, be uniformly mixed 1h-2h, make modifying asphalt.
Be agglutinate by above-mentioned obtained modifying asphalt, in accordance with China's " standard specification for construction and acceptance of highway asphalt pavement " F40-2004, with continuous dense bitumen compound Sup-20 for asphalt type, wherein modifying asphalt is 4.2% of mixture total weight amount.
Embodiment 4
In high speed mixer, by weight first to add 50 parts of EVA, 5 parts of polyethylene, 5.9 part 90
#microcrystalline Wax, 5 parts of stearic acid mix, in the present embodiment, in EVA, the content of VA is 20%, polyethylene is Low Density Polyethylene, add 20 parts again and subtract that oil extracted out by three lines, 5 parts of epoxy soybean oils mix, make particle surface enclose one deck liquid film, add 5 part of 60 order waste tire rubber powder, 4 parts of nano zine oxides, 0.1 part of oxidation inhibitor 164 subsequently and mix, make powder be attached to particle surface as far as possible.Finally by the material that mixes by Double-screw extruding pelletization, by dicing machine pelletizing, can modified asphalt agglomerate be obtained.
In the embody rule of the present embodiment, by weight getting 5 parts of modified asphalt agglomerates and 95 parts of matrix pitches respectively.This matrix pitch is heated to 170 DEG C-180 DEG C, adds modified asphalt agglomerate in proportion, be uniformly mixed 1h-2h, make modifying asphalt.
Be agglutinate by above-mentioned obtained modifying asphalt, in accordance with China's " standard specification for construction and acceptance of highway asphalt pavement " F40-2004, with continuous dense bitumen compound Sup-20 for asphalt type, wherein modifying asphalt is 4.2% of mixture total weight amount.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to above-mentioned explanation.For general technical staff of the technical field of the invention, in every case be do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a modified asphalt agglomerate, is characterized in that, comprises the component of following weight ratio:
40-60 part EVA, 10-20 part aromatic hydrocarbons extracts oil, 5-10 part rubber powder, the organic wax of 5-10 part, 5-15 part polyethylene, 3-5 part stearic acid, 2-5 part softening agent, 2-4 part nano particle and 0.1-0.5 part oxidation inhibitor out.
2. modified asphalt agglomerate according to claim 1, is characterized in that: in described EVA, the content of VA is 14%-28%, and the fusing point of described EVA is 70 DEG C-90 DEG C.
3. modified asphalt agglomerate according to claim 1, is characterized in that: described aromatic hydrocarbons extraction oil is furfural extract oil, rubber extracts at least one that is oily and that subtract in three lines extraction oil out.
4. modified asphalt agglomerate according to claim 1, is characterized in that: described rubber powder is 30-60 object waste tire rubber powder.
5. modified asphalt agglomerate according to claim 1, is characterized in that: described organic wax is at least one in PE wax, PP wax, PVC wax, Microcrystalline Wax, and described Microcrystalline Wax is 70
#-90
#.
6. modified asphalt agglomerate according to claim 1, is characterized in that: described polyethylene is Low Density Polyethylene, and described oxidation inhibitor is at least one in antioxidant 1010, antioxidant 1076, oxidation inhibitor 164.
7. modified asphalt agglomerate according to claim 1, is characterized in that: described softening agent is epoxy soybean oil.
8. modified asphalt agglomerate according to claim 1, is characterized in that: described nano particle is at least one in nano-calcium carbonate, nano titanium oxide, nano zine oxide.
9. prepare a method for modified asphalt agglomerate as described in any one of claim 1-8, it is characterized in that, be included in high speed mixer and add EVA, polyethylene, stearic acid and organic wax, mix; Add aromatic hydrocarbons and extract oil and softening agent out, mix; Add rubber powder, nano particle and oxidation inhibitor, mix; By the material that mixes by Double-screw extruding pelletization and by dicing machine pelletizing.
10. an application for modified asphalt agglomerate, is characterized in that, by weight percentage, 90-99 part matrix pitch is heated to 170 DEG C-180 DEG C, add the modified asphalt agglomerate of 1-10 part as described in any one of claim 1-8, be uniformly mixed 1h-2h, make modifying asphalt.
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Cited By (7)
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| CN106675052A (en) * | 2016-12-19 | 2017-05-17 | 安徽世界村新材料有限公司 | Waste and old rubber powder modified bituminous material with low temperature resistance and crack resistance for waterproof coiled material as well as preparation method thereof |
| CN108659453A (en) * | 2017-04-01 | 2018-10-16 | 广州鸿绵合成材料有限公司 | Cold-resistant anti-aging color modified pitch of one kind and preparation method thereof |
| CN108659559A (en) * | 2018-06-12 | 2018-10-16 | 新乡市龙腾路用材料有限公司 | Organic composite nano modified alphalt additive and its preparation method and application |
| CN109593235A (en) * | 2018-12-03 | 2019-04-09 | 江苏东道交通科技集团有限公司 | A kind of rubber asphalt effectively keeps the temperature additive and preparation method thereof |
| CN109849452A (en) * | 2018-11-20 | 2019-06-07 | 苏州卓宝科技有限公司 | A kind of modified asphalt waterproof coiled material and preparation method thereof |
| US20210403650A1 (en) * | 2019-07-12 | 2021-12-30 | Wacker Chemie Ag | Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same |
| CN115491047A (en) * | 2022-09-28 | 2022-12-20 | 西北民族大学 | Non-segregation waste PE/EVA modified asphalt and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106675052A (en) * | 2016-12-19 | 2017-05-17 | 安徽世界村新材料有限公司 | Waste and old rubber powder modified bituminous material with low temperature resistance and crack resistance for waterproof coiled material as well as preparation method thereof |
| CN108659453A (en) * | 2017-04-01 | 2018-10-16 | 广州鸿绵合成材料有限公司 | Cold-resistant anti-aging color modified pitch of one kind and preparation method thereof |
| CN108659453B (en) * | 2017-04-01 | 2021-06-18 | 广州鸿绵合成材料有限公司 | Cold-resistant anti-aging colored modified asphalt and preparation method thereof |
| CN108659559A (en) * | 2018-06-12 | 2018-10-16 | 新乡市龙腾路用材料有限公司 | Organic composite nano modified alphalt additive and its preparation method and application |
| CN109849452A (en) * | 2018-11-20 | 2019-06-07 | 苏州卓宝科技有限公司 | A kind of modified asphalt waterproof coiled material and preparation method thereof |
| CN109593235A (en) * | 2018-12-03 | 2019-04-09 | 江苏东道交通科技集团有限公司 | A kind of rubber asphalt effectively keeps the temperature additive and preparation method thereof |
| US20210403650A1 (en) * | 2019-07-12 | 2021-12-30 | Wacker Chemie Ag | Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same |
| CN115491047A (en) * | 2022-09-28 | 2022-12-20 | 西北民族大学 | Non-segregation waste PE/EVA modified asphalt and preparation method thereof |
| CN115491047B (en) * | 2022-09-28 | 2023-09-19 | 西北民族大学 | Segregation-free waste PE/EVA modified asphalt and preparation method thereof |
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