CN103396672B - A kind of thermal conductive asphalt matrix material and preparation method thereof - Google Patents
A kind of thermal conductive asphalt matrix material and preparation method thereof Download PDFInfo
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- CN103396672B CN103396672B CN201310360959.1A CN201310360959A CN103396672B CN 103396672 B CN103396672 B CN 103396672B CN 201310360959 A CN201310360959 A CN 201310360959A CN 103396672 B CN103396672 B CN 103396672B
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Abstract
The invention discloses a kind of thermal conductive asphalt matrix material, be made up of the raw material of following weight part: pitch 100 parts, silicon carbide micro-powder 1 ~ 20 part, surface-modifying agent 0.1 ~ 5 part, stablizer 0.5 ~ 10 part, dispersion agent 0.5 ~ 10 part.The invention also discloses a kind of preparation method of thermal conductive asphalt matrix material.Thermal conductive asphalt matrix material of the present invention adopts silicon carbide micro-powder to carry out modification to pitch, for common graphite or carbon fiber modifying pitch, has higher thermal conductivity.Thermal conductive asphalt matrix material prepared by the present invention has excellent package stability, under normal temperature can not there is considerable change in long-term airtight placement, its high-temperature stability significantly improves relative to plain asphalt, have excellent comprehensive pavement performance, the requirement of Asphalt Pavement Construction Technique specification to pitch properties can be met, can be used for the fields such as bituminous pavement deicing, road surface Rut resistance and road surface heat collection utilization.
Description
Technical field
The invention belongs to asphalt concrete material technical field, be specifically related to a kind of thermal conductive asphalt matrix material and preparation method thereof.
Background technology
Bituminous concrete pavement has that noise is little, sliding resistance good, traffic safety advantages of higher, and bituminous pavement can realize the regeneration of ground surface material, the favor of numerous planners and builder is subject in road construction, be widely used in urban road, current high grade pavement is bituminous pavement substantially.
In the winter of cold, road snow freezes and can bring serious detrimentally affect to the coast is clear and traffic safety.Ice and snow makes coefficient of road adhesion greatly reduce, and makes car skidding, stopping distance obviously extends.Even brake failure, direction out of control.Thus cause serious traffic accident.Therefore, in order to ensure the coast is clear and traffic safety, avoiding or reducing traffic accident, improving road passage capability and operation benefits, must take measures to remove ice and snow on road surfaces.Always ice and snow on road surfaces problem annoyings traffic department of various countries, every year due to the several hundred million unit of direct economic loss average out to that road snow freezes caused.Therefore, the process problem that road pavement accumulated snow freezes, various countries pay much attention to always, and have made large quantity research, explore the method that multiple suppression road snow freezes.These methods mainly comprise spreading Snow Agent, manually remove method, spreading sandstone material, mechanical removal method, melting snow and ice by heating power method, seif-citing rate elasticity road-surface-paving technology, conduction paving ice-melt snow technology and Conversion of energy type ice-melt snow technology etc.
Although novel deicing method is varied, but the method generally adopted at present also spreads Snow Agent and artificial mechanism removing based on traditional.Wherein spread Snow Agent and can reduce ice and snow melting point, make ice dissolution, can deicing to a certain extent.But Snow Agent has a lot of harm: (1) damages the green belt of road both sides and farmland; (2) corrode the road administration such as road, bridge facility, salts substances interacts with pitch or cement, the breakage on acceleration road surface; (3) polluted underground water resource.And method that is artificial and mechanical removal ice and snow, owing to using the facility that open ice, road pavement can produce destruction, has a strong impact on pavement life.
Therefore, the novel pavement deicing technology developing energy-conserving and environment-protective is significant.Wherein, road-surface heating deicing technology has a good application prospect.This technology is that the heat utilizing underground heat, combustion gas, electricity or Solar lamp to produce makes ice dissolution.If underground heat tube method, nichrome wire method, infrared(ray)lamp are according to heating method, heating cable method etc.Other forms of thermal energy storage in this device, when accumulated snow icy on road by fault offset, is made pavement snow melting, and excludes with the form of steam and water by the energy storage that utilization is layed in road surface and conversion system.In order to use this technology effective to remove ice and snow on road surfaces, ground surface material needs to have good thermal conductivity.Pitch is as the agglutinate of compound, and the heat conductivility of its thermal conductivity to asphalt has material impact.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of thermal conductive asphalt matrix material.Thermal conductive asphalt matrix material of the present invention adopts silicon carbide micro-powder to carry out modification to pitch, for common graphite or carbon fiber modifying pitch, has higher thermal conductivity.Along with the difference of carborundum content, the thermal conductivity of pitch can be made to significantly improve, considerably beyond the thermal conductivity of pitch itself.Adopt surface-modifying agent, dispersion agent and stablizer simultaneously, give full play to the synergy of three, carborundum particle is dispersed in pitch matrix uniformly and stably, and the thermal conductive asphalt matrix material obtained has excellent package stability, and under normal temperature, long-term airtight placement considerable change can not occur.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of thermal conductive asphalt matrix material, is characterized in that, be made up of the raw material of following weight part: pitch 100 parts, silicon carbide micro-powder 1 ~ 20 part, surface-modifying agent 0.1 ~ 5 part, stablizer 0.5 ~ 10 part, dispersion agent 0.5 ~ 10 part.
Above-mentioned a kind of thermal conductive asphalt matrix material, is made up of the raw material of following weight part: pitch 100 parts, silicon carbide micro-powder 5 ~ 15 parts, surface-modifying agent 1 ~ 4 part, stablizer 2 ~ 8 parts, dispersion agent 2 ~ 8 parts.
Above-mentioned a kind of thermal conductive asphalt matrix material, is made up of the raw material of following weight part: pitch 100 parts, silicon carbide micro-powder 10 parts, surface-modifying agent 2 parts, stablizer 2 parts, dispersion agent 5 parts.
Above-mentioned a kind of thermal conductive asphalt matrix material, described pitch is petroleum pitch, coal-tar pitch or polymer modified asphalt, or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt and polymer modified asphalt.
Above-mentioned a kind of thermal conductive asphalt matrix material, described silicon carbide micro-powder is alpha-silicon carbide micro mist and/or silicon B-carbide micro mist, and the mean particle size of silicon carbide micro-powder is not more than 200 orders.
Above-mentioned a kind of thermal conductive asphalt matrix material, described surface-modifying agent is silane coupling agent, titanate coupling agent, aluminate coupling agent or boric acid ester coupler.
Above-mentioned a kind of thermal conductive asphalt matrix material, described stablizer is SULPHUR POWDER.
Above-mentioned a kind of thermal conductive asphalt matrix material, the mean particle size of described SULPHUR POWDER is not more than 100 orders.
Above-mentioned a kind of thermal conductive asphalt matrix material, described dispersion agent is Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, polyoxyethylene glycol or sodium lauryl sulphate.
In addition, present invention also offers a kind of method preparing above-mentioned thermal conductive asphalt matrix material, it is characterized in that, the method is: by asphalt heating to complete melting, then under the agitation condition of 200rpm ~ 500rpm, in the pitch of melting, add silicon carbide micro-powder, surface-modifying agent, stablizer and dispersion agent successively, obtain mixture; Be high shear agitation 5min ~ 60min under the condition of 110 DEG C ~ 180 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 2000rpm ~ 5000rpm.
Described weight part can be gram, two, jin, kilogram, Dun Deng weight metering unit.
The present invention compared with prior art has the following advantages:
1, thermal conductive asphalt matrix material of the present invention adopts silicon carbide micro-powder to carry out modification to pitch, for common graphite or carbon fiber modifying pitch, has higher thermal conductivity.Along with the difference of carborundum content, the thermal conductivity of pitch can be made to significantly improve, considerably beyond the thermal conductivity of pitch itself.
2, thermal conductive asphalt matrix material of the present invention adopts surface-modifying agent, dispersion agent and stablizer simultaneously, give full play to the synergy of three, carborundum particle is made to be dispersed in pitch matrix uniformly and stably, the thermal conductive asphalt matrix material obtained has excellent package stability, and under normal temperature, long-term airtight placement considerable change can not occur.The carborundum particle of uniform and stable dispersion is conducive to forming stable good passage of heat in the base, thus the thermal conductivity of pitch is improved greatly.
3, the high-temperature stability of thermal conductive asphalt matrix material that prepared by the present invention significantly improves relative to plain asphalt, have excellent comprehensive pavement performance, the requirement of Asphalt Pavement Construction Technique specification to pitch properties can be met, be applicable to various weather condition and construction machinery to the performance requriements of pitch, may be used for Asphalt Pavement of Highway construction.
4, the thermal conductive asphalt matrix material that prepared by the present invention can be used for the fields such as bituminous pavement deicing, road surface Rut resistance and road surface heat collection utilization.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1
100kg70 petroleum pitch is heated to complete melting, then under the stirring at low speed condition of 200rpm, in the pitch of melting, add that 5kg mean particle size is 200 object alpha-silicon carbide micro mists, 1kg silane coupling agent KH560,2kg mean particle size is 200 object SULPHUR POWDER and 2kg Sodium dodecylbenzene sulfonate successively, obtain mixture; Be high shear agitation 5min under the condition of 160 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 2000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 1.
The Performance comparision of table 1 bi-material
Can obviously find out from table 1, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 2
The present embodiment is identical with embodiment 1, wherein difference is: described pitch is coal-tar pitch or polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.); Described silicon carbide micro-powder is silicon B-carbide micro mist or alpha-silicon carbide micro mist and silicon B-carbide micro mist.
Embodiment 3
100kg90 petroleum pitch is heated to complete melting, then under the stirring at low speed condition of 300rpm, in the pitch of melting, add that 6kg mean particle size is 300 object silicon B-carbide micro mists, 2kg Silane coupling agent KH550,2kg mean particle size are 300 object SULPHUR POWDER and 4kg sodium laurylsulfonate successively, obtain mixture; Be high shear agitation 15min under the condition of 165 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 2000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 2.
The Performance comparision of table 2 bi-material
Can obviously find out from table 2, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 4
The present embodiment is identical with embodiment 3, wherein difference is: described pitch is coal-tar pitch or polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.); Described silicon carbide micro-powder is silicon B-carbide micro mist or alpha-silicon carbide micro mist and silicon B-carbide micro mist.
Embodiment 5
100kg SBR modifying asphalt is heated to complete melting, then under the stirring at low speed condition of 400rpm, in the pitch of melting, add that 8kg mean particle size is 400 object alpha-silicon carbide micro mists, 3kg titanate coupling agent, 4kg mean particle size are 400 object SULPHUR POWDER and 5kg sodium laurylsulfonate successively, obtain mixture; Be high shear agitation 30min under the condition of 150 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 3000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 3.
The Performance comparision of table 3 bi-material
Can obviously find out from table 3, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 6
The present embodiment is identical with embodiment 5, wherein difference is: described pitch is petroleum pitch or coal-tar pitch, or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.); Described silicon carbide micro-powder is silicon B-carbide micro mist or alpha-silicon carbide micro mist and silicon B-carbide micro mist.
Embodiment 7
100kg coal-tar pitch is heated to complete melting, then under the stirring at low speed condition of 500rpm, in the pitch of melting, add that 5kg mean particle size is 300 object alpha-silicon carbide micro mists, 5kg mean particle size is 300 object silicon B-carbide micro mist 2kg Silane coupling agent KH550s, 2kg mean particle size is 400 object SULPHUR POWDER and 5kg polyoxyethylene glycol successively, obtain mixture; Be high shear agitation 40min under the condition of 120 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 3000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 4.
The Performance comparision of table 4 bi-material
Can obviously find out from table 4, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 8
The present embodiment is identical with embodiment 7, wherein difference is: described pitch is petroleum pitch or polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.); Described silicon carbide micro-powder is alpha-silicon carbide micro mist or silicon B-carbide micro mist.
Embodiment 9
60kg70 petroleum pitch and 40kg rock asphalt are mixed and heated to complete melting, then under the stirring at low speed condition of 200rpm, in the pitch of melting, add that 15kg mean particle size is 200 object silicon B-carbide micro mists, 4kg boric acid ester coupler, 8kg mean particle size are 300 object SULPHUR POWDER and 8kg polyoxyethylene glycol successively, obtain mixture; Be high shear agitation 40min under the condition of 110 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 4000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 5.
The Performance comparision of table 5 bi-material
Can obviously find out from table 5, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 10
The present embodiment is identical with embodiment 9, wherein difference is: described pitch is petroleum pitch, coal-tar pitch or polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or be petroleum pitch, rock asphalt is (as lake pitch, rock asphalt or seabed pitch etc.), coal-tar pitch and polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.) in three kinds or four kinds, or be coal-tar pitch, rock asphalt is (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.) in two kinds, or be petroleum pitch and coal-tar pitch, or be that petroleum pitch and polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), described silicon carbide micro-powder is alpha-silicon carbide micro mist or alpha-silicon carbide micro mist and silicon B-carbide micro mist.
Embodiment 11
30kg70 petroleum pitch, 20kg lake pitch, 20kg coal-tar pitch and 30kg SBR modifying asphalt are heated to complete melting, then under the stirring at low speed condition of 500rpm, in the pitch of melting, add that 5kg mean particle size is 500 object alpha-silicon carbide micro mists, 15kg mean particle size is 500 object silicon B-carbide micro mists, 5kg aluminate coupling agent, 10kg mean particle size are 100 object SULPHUR POWDER and 10kg sodium lauryl sulphate successively, obtain mixture; Be high shear agitation 60min under the condition of 140 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 5000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 6.
The Performance comparision of table 6 bi-material
Can obviously find out from table 6, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 12
The present embodiment is identical with embodiment 11, wherein difference is: described pitch is petroleum pitch, coal-tar pitch or polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or is two or three in petroleum pitch, rock asphalt (as lake pitch, rock asphalt or seabed pitch etc.), coal-tar pitch and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.); Described silicon carbide micro-powder is alpha-silicon carbide micro mist or silicon B-carbide micro mist.
Embodiment 13
40kg rock asphalt, 40kg coal-tar pitch and 20kg SBS modifying asphalt are heated to complete melting, then under the stirring at low speed condition of 400rpm, in the pitch of melting, add that 1kg mean particle size is 200 object alpha-silicon carbide micro mists, 0.1kg silane coupling agent KH560,0.5kg mean particle size is 200 object SULPHUR POWDER and 0.5kg sodium lauryl sulphate successively, obtain mixture; Be high shear agitation 60min under the condition of 180 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 3000rpm.
The thermal conductive asphalt matrix material prepare the present embodiment and the performance of the present embodiment pitch used compare, and the results are shown in Table 7.
The Performance comparision of table 7 bi-material
Can obviously find out from table 7, thermal conductive asphalt matrix material prepared by the present embodiment has excellent high-temperature stability, temperature sensitivity and high thermal conductivity.
Embodiment 14
The present embodiment is identical with embodiment 11, wherein difference is: described pitch is petroleum pitch, coal-tar pitch or polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or be petroleum pitch, rock asphalt is (as lake pitch, rock asphalt or seabed pitch etc.), coal-tar pitch and polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.) in two kinds or four kinds, or be petroleum pitch, rock asphalt is (as lake pitch, rock asphalt or seabed pitch etc.) and coal-tar pitch, or be petroleum pitch, rock asphalt is (as lake pitch, rock asphalt or seabed pitch etc.) and polymer modified asphalt (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), or be petroleum pitch, coal-tar pitch and polymer modified asphalt are (as SBR modifying asphalt, SBS modifying asphalt, EVA modifying asphalt or PE modifying asphalt etc.), described silicon carbide micro-powder is silicon B-carbide micro mist or alpha-silicon carbide micro mist and silicon B-carbide micro mist.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solution of the present invention.
Claims (7)
1. a thermal conductive asphalt matrix material, is characterized in that, is made up of the raw material of following weight part: pitch 100 parts, silicon carbide micro-powder 10 parts, surface-modifying agent 2 parts, stablizer 2 parts, dispersion agent 5 parts; Described silicon carbide micro-powder is alpha-silicon carbide micro mist and/or silicon B-carbide micro mist, and the mean particle size of silicon carbide micro-powder is not more than 200 orders.
2. a kind of thermal conductive asphalt matrix material according to claim 1, is characterized in that, described pitch is petroleum pitch, coal-tar pitch or polymer modified asphalt, or is at least two kinds in petroleum pitch, coal-tar pitch, rock asphalt and polymer modified asphalt.
3. a kind of thermal conductive asphalt matrix material according to claim 1, is characterized in that, described surface-modifying agent is silane coupling agent, titanate coupling agent, aluminate coupling agent or boric acid ester coupler.
4. a kind of thermal conductive asphalt matrix material according to claim 1, is characterized in that, described stablizer is SULPHUR POWDER.
5. a kind of thermal conductive asphalt matrix material according to claim 4, is characterized in that, the mean particle size of described SULPHUR POWDER is not more than 100 orders.
6. a kind of thermal conductive asphalt matrix material according to claim 1, is characterized in that, described dispersion agent is Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, polyoxyethylene glycol or sodium lauryl sulphate.
7. prepare the method for thermal conductive asphalt matrix material as claimed in claim 1 for one kind, it is characterized in that, the method is: by asphalt heating to complete melting, then under the agitation condition of 200rpm ~ 500rpm, in the pitch of melting, add silicon carbide micro-powder, surface-modifying agent, stablizer and dispersion agent successively, obtain mixture; Be high shear agitation 5min ~ 60min under the condition of 110 DEG C ~ 180 DEG C again in temperature by described mixture, after naturally cooling, obtain thermal conductive asphalt matrix material; The shearing rate of described high shear agitation is 2000rpm ~ 5000rpm.
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| CN106186835A (en) * | 2016-07-12 | 2016-12-07 | 王雅露 | A kind of heat-conducting type bituminous concrete |
| CN106519721B (en) * | 2016-11-30 | 2018-11-06 | 华中科技大学 | A kind of thermal conductive asphalt composite material, preparation method and application |
| CN106995612A (en) * | 2017-05-08 | 2017-08-01 | 安徽海德石油化工有限公司 | A kind of modified pitch |
| CN108559296B (en) * | 2018-05-15 | 2021-03-19 | 苏州太星新材料科技有限公司 | Si (B) C fiber high-viscosity high-elasticity asphalt modifier and preparation and application thereof |
| CN109987881B (en) * | 2019-03-21 | 2021-03-23 | 上海宝新特种沥青混凝土有限公司 | Asphalt concrete and preparation method thereof |
| CN112900183B (en) * | 2021-01-18 | 2021-11-19 | 哈尔滨学院 | Graphene-based self-snow-melting pavement structure with shape memory function |
| CN113897069A (en) * | 2021-11-05 | 2022-01-07 | 周其强 | Carbene modified asphalt and preparation method thereof |
| CN114539794B (en) * | 2022-02-25 | 2023-07-14 | 重庆交通大学 | High-heat-conductivity rubber composite modified asphalt and preparation method thereof |
| CN115926482A (en) * | 2022-11-28 | 2023-04-07 | 张晓东 | High-thermal-conductivity asphalt mixture and preparation method thereof |
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