CN103289321B - Pavement thermoregulation paving material based on phase-change heat accumulation microcapsules - Google Patents
Pavement thermoregulation paving material based on phase-change heat accumulation microcapsules Download PDFInfo
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Abstract
The invention discloses a pavement thermoregulation paving material based on phase-change heat accumulation microcapsules, which is composed of a component A and a component B, wherein the component A is composed of the following ingredients in parts by mass: 40-84 parts of maleimide modified asphalt, 5-10 parts of fatty amine, 15-35 parts of polyamide/polyetheramine and 1-15 parts of compatiblizing agent; the component B is prepared by adding 15-45 parts of microcapsules, which comprise heat accumulation materials respectively with the phase-change temperature of -10-10 DEG C and/or 30-60 DEG C, into 55-85 parts of epoxy resin; and the component A and the component B are uniformly mixed in a ratio of 2.0:1-8:1. The pavement thermoregulation material can be sprayed on the original asphalt pavement as a thermoregulation layer, and can also be used as a pavement wear layer capable of adapting to ambient temperature after adding a right amount of aggregate. The invention greatly improves the high/low temperature stability and fatigue property of the asphalt pavement, and effectively prolongs the service life of the pavement.
Description
Technical field
The present invention relates to a kind of pavement temperature and regulate material, add after specifically a kind of microcapsule sealing phase-change thermal storage material prepare in epoxy bitumen material can regulate surfacing material to the adaptive pavement temperature based on phase-change thermal storage microcapsule of envrionment temperature.
Background technology
Pitch is typically used as paves the way and water-proof material, belongs to a kind of thermoplastic material in essence.The road surface of asphalt paving used now by this property list, and in summer high-temperature season, under heavy lift effect, road surface easily occurs rut, in cold season in winter, easily occurs warm plastic forming.Along with the frequent appearance of extreme climate and the surge of traffic volume of highway, the temperature stability of pavement material is had higher requirement.Therefore, current most of high-grade paving generally adopts modifying asphalt.
The method of asphalt modification is more, as a whole, mostly is both at home and abroad use polymer modified asphalt.Polymer modified asphalt mainly contains two kinds, and one is thermoplastic pitch, and they can improve the high temperature performance of pitch to a great extent; Another kind is heat cured epoxy resin modified asphalt, and the thermoplasticity that they fundamentally change pitch makes the high temperature performance of pitch have qualitative leap.But these two kinds of approach are all subject to cost restriction, and cannot use on built road surface.
Summary of the invention
The object of this invention is to provide a kind of pavement temperature based on phase-change thermal storage microcapsule and regulate surfacing material, warm phase-change heat-storage material during low temperature phase change heat accumulating coordinates so that the encapsulation of the form of microcapsule is rear by this material, be dispersed in the epoxy component of quick-setting two component epoxy pitch, after high-speed mixing, be sprayed at existing asphalt pavement surface.Firmly stick to after this bituminous epoxy layer rapid solidification on original asphalt pavement and use as temperature regulation layer, there is high strength, high-elongation, fatigue performance excellence, can effectively reduce pavement temperature susceptibility.
The object of the invention is to be achieved through the following technical solutions:
Pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, and it is characterized in that: this material is made up of part A and part B, wherein, the mass ratio of part A and part B is 2.0:1-8:1;
The quality group of part A becomes:
Maleimide-modified pitch 40-84 part
Aliphatic amide 5-10 part
Polymeric amide 15-35 part
Compatilizer 1-15 part
The quality group of part B becomes:
Epoxy resin 55-85 part
Microcapsule 15-45 part of interior bag phase-change heat-storage material.
In the present invention, described Maleimide-modified pitch uses maleimide and derivative and plain asphalt thereof to react obtained.Above-mentioned pavement temperature regulates surfacing material, and described plain asphalt can be petroleum pitch, oxidized bitumen, coal-tar pitch or lake pitch.One or several mixture wherein can be chosen.
Described aliphatic amide refers to the aliphatic amide containing more than 3 reactive hydrogens, and can be polyamines polyene, polymethylene diamines class, also can be the diamines that C 5 fraction is corresponding and unsaturated aliphatic diamines, can also be the diamines containing aromatic nucleus.One or several mixture wherein can be chosen.
Described polymeric amide can be low-molecular-weight polyamide resin and modified resin thereof, be preferably 40 DEG C of viscosity 3,000-80, between 000mPa.s, the low-molecular-weight polyamide resin of amine value within 50mgKOH/g-500mgKOH/g, preferably 40 DEG C of viscosity are 5,000-50, within 000mPa.s, the polyamide resin of amine value within 150mgKOH/g-300mgKOH/g, as river, capital 9650, Versamid 140 and Fuji change into 2154,215X etc.Both one wherein can be chosen, also wherein several mixtures can be chosen.
Described compatilizer can be the extraction oil of furfural section in oil refining, and hydrogen phosphide cumene decomposes the phenolic aldehyde residual oil distillated, pine tar system rubber oil, coal tar system rubber oil, also can be the petroleum rubber oils such as paraffinic base, cycloalkyl or aryl.Preferably select to be the furfural section extraction oil in oil refining and petroleum rubber oil.Both one wherein can be chosen, also wherein several mixtures can be chosen.
The preparation method of described microcapsule does not limit, but requires with epoxy resin compatibility good, and heat resisting temperature is more than 80 DEG C.The phase-change heat-storage material that microcapsule include is two kinds of phase change materials (or mixture) between solid-liquid or solid-solid phase-change temperature-10 DEG C-10 DEG C and/or 30 DEG C-60 DEG C, wherein phase alternating temperature 30 DEG C of-60 DEG C of phase-change heat-storage materials be between phase change material, can be that paraffin, lipid acid, polyoxyethylene glycol, polyoxyethylene and modifier thereof are as fatty alcohol-polyoxyethylene ether etc.; Wherein phase alternating temperature-10 DEG C of-10 DEG C of phase-change heat-storage materials be between phase change material, can be ethylene glycol, glycerine, low molecular poly etc.
The performance of epoxy bitumen material can be changed to meet the different requirements under different condition by the ratio of each component adjusting part A.
First matrix pitch is carried out functional modification by the present invention, as shown in Fig. 1, Fig. 2, makes the solidifying agent itself becoming a kind of epoxy resin; Then add preferred amine curing agent phase-change heat-storage material, obtain epoxy asphalt component A, add the pressure-sensitive microcapsule comprising phase-change heat-storage material in the epoxy and obtain epoxy asphalt component B.The two component epoxy pitch of such preparation, curing speed is very fast and controlled, product property is adjustable, itself has excellent high temperature performance, both can meet and use as paving wearing course, simultaneously also by phase-change heat-storage material firmly coated with wherein, achieve the adjustment to envrionment temperature.
Bituminous epoxy defines a kind of network structure of 3 D stereo after curing reaction, and the inierpeneirating network structure of this 3 D stereo is its high strength, snappiness provides theoretical foundation.Include adding of phase-change heat-storage material microcapsule, make this bituminous epoxy wearing course effectively reduce the temperature sensitivity of lower floor's bituminous pavement as reservoir, therefore, extend the work-ing life of bituminous pavement from two aspects.
Low temperature phase change heat accumulating with warm phase-change heat-storage material in cooperation after the encapsulation of the form of microcapsule, is dispersed in the epoxy component of quick-setting two component epoxy pitch by the present invention, after high-speed mixing, is sprayed at existing asphalt pavement surface.Firmly stick to after this bituminous epoxy layer rapid solidification on original asphalt pavement and use as temperature regulation layer, there is high strength, high-elongation, fatigue performance excellence, can effectively reduce pavement temperature susceptibility.
Present invention employs microcapsulary by material lower for transformation temperature, as ethylene glycol, glycerine etc., add to after sealing in bituminous material, coordinate the material that transformation temperature is higher, as paraffin, glycerine, (gathering) ethylene glycol, Soxylat A 25-7 and modifier thereof etc., join in quick-setting two component epoxy pitch and form bituminous epoxy Temperature regulating material, be sprayed directly on road surface or add the temperature regulation layer of suitably gathering materials as road surface and use.Present method improves high/low temperature stability and the fatigue property of bituminous pavement greatly, effectively extends the work-ing life on road surface.
Pavement temperature of the present invention regulates the existing high intensity of surfacing material, and the snappiness had again, can also provide the corresponding operating time according to different requirements; Also arbitrarily can adjust and meet different performance requirement, stability in storage is good, corresponding epoxy asphalt concrete fatigue performance is excellent, energy open to traffic rapidly after having mated formation, be applicable to motorway and bridge etc. and require higher occasion, also can be used for arterial street, Bus stand and airstrip.
Accompanying drawing explanation
Fig. 1 is the mechanism schematic diagram of Maleimide-modified pitch.
Fig. 2 is
nthe mechanism schematic diagram of-phenyl maleimide modifying asphalt.
Embodiment
Below by specific embodiment, the present invention is further described, but embodiment is not all limitation of the present invention.
embodiment 1
Pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, is obtained by following methods:
57 parts, the petroleum pitch (place of production: Dan Jia temple) (quality, lower same) being warmed up to 90-140 DEG C is added reactor, adds maleimide 1.14 parts, be warmed up to 130-135 DEG C, after pressure stabilisation, pass into N
2, make total pressure remain on 0.25MPa, react after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add triethylene tetramine 24 parts, rear temperature programming is to 130-135 DEG C of reaction 1-3 hour.Then add be warming up to 90-140 DEG C in advance 9650,16.2 parts, river, capital, naphthenic rubber oil 5 parts, pre-mixing 30 minutes; And then obtain part A by colloidal mill high speed dispersion, finally add part B epoxy resin (E-51 in 2.0:1 ratio, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=20:80 and microcapsule core are ethylene glycol and the Macrogol 2000 of 1:1) mix.This material can use as the temperature self-adaptation top layer on the tack coat of mating formation or plain asphalt road surface.
embodiment 2
Pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, is obtained by following methods:
57 parts, the petroleum pitch (place of production: Dan Jia temple) (quality, lower same) being warmed up to 90-140 DEG C is added reactor, adds maleimide 1.14 parts, be warmed up to 130-135 DEG C, after pressure stabilisation, pass into N
2, make total pressure remain on 0.25MPa, react after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add hexanediamine 14.0 parts, rear temperature programming is to 130-135 DEG C of reaction 1-3 hour.Then add be warming up to 90-140 DEG C in advance 9650,20.2 parts, river, capital, furfural extract oil 8 parts, pre-mixing 30 minutes; And then obtain part A by colloidal mill high speed dispersion, finally add part B epoxy resin (E-51, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=30:70 and microcapsule core are glycerine and the paraffin of 1:1) in 4.2:1 ratio and mix.This material can use as the temperature self-adaptation top layer on the tack coat of mating formation or plain asphalt road surface.
embodiment 3
57 parts, the petroleum pitch (place of production: Dan Jia temple) (quality, lower same) being warmed up to 90-140 DEG C is added reactor, adds maleimide 1.14 parts, be warmed up to 130-135 DEG C, after pressure stabilisation, pass into N
2, make total pressure remain on 0.25MPa, react after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add diphenyl diamine base octadiene 13.2 parts, rear temperature programming is to 130-135 DEG C of reaction 1-3 hour.Then add be warming up to 90-140 DEG C in advance 9650,21.5 parts, river, capital, 5 parts, phenolic aldehyde residual oil, pre-mixing 30 minutes; And then obtain part A by colloidal mill high speed dispersion, finally add part B epoxy resin (E-44 in 6.8:1 ratio, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=20:80 and microcapsule core are ethylene glycol and the OP-10 of 1:1) mix.This material can use as the temperature self-adaptation top layer on the tack coat of mating formation or plain asphalt road surface.
embodiment 4
57 parts, the petroleum pitch (place of production: Dan Jia temple) (quality, lower same) being warmed up to 90-140 DEG C is added reactor, adds maleimide 1.14 parts, be warmed up to 130-135 DEG C, after pressure stabilisation, pass into N
2, make total pressure remain on 0.25MPa, react after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add Epikure-180,10.0 parts, rear temperature programming is to 130-135 DEG C of reaction 1-3 hour.Then add be warming up to 90-140 DEG C in advance 9650,15.6 parts, river, capital, naphthenic rubber oil 5 parts, pre-mixing 30 minutes; And then obtain part A by colloidal mill high speed dispersion, finally add part B (ethylene-stryene-glytidyl methacrylate 1:1:1 in 4.7:1 ratio, molecular weight: 2000, wherein microcapsule quality: epoxy resin quality=20:80 and microcapsule core are glycerine and the TX-10 of 1:1) mix.This material can use as the temperature self-adaptation top layer on the tack coat of mating formation or plain asphalt road surface.
embodiment 5
Pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, is obtained by following methods:
47 parts, the petroleum pitch (U.S.'s shell) being warmed up to 90-140 DEG C is added reactor, adds
n-phenyl maleimide 3 parts, is warmed up to 150-155 DEG C, keeps 20 minutes, after pressure stabilisation, passes into N
2, make total pressure remain on 0.25MPa; React after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add the diaminodiphenyl-methane 10.45 parts, the Fuji that are warming up to 90-140 DEG C in advance and change into 2154,25 parts, naphthenic rubber oil 8 parts, pre-mixing 30 minutes, takes out 30 minutes after completing under the vacuum of 0.05MPa; And then obtain part A by colloidal mill high speed dispersion, in 3.6:1 ratio by part A and part B epoxy resin (E-44, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=35:65 and microcapsule core are Macrogol 200 and the paraffin of 1:1) mixing, admix by the bitumen aggregate ratio of 5-8% again and gather materials, be incubated 50 minutes, carry out road pavement.
embodiment 6
Pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, is obtained by following methods:
The coal-tar pitch (Shanxi Heng De Chemical Co., Ltd.) 47 parts being warmed up to 90-140 DEG C is added reactor, adds
n-phenyl maleimide 3 parts, is warmed up to 150-155 DEG C, keeps 20 minutes, after pressure stabilisation, passes into N
2, make total pressure remain on 0.25MPa; React after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add the G-328(Mitsubishi gas chemistry being warming up to 90-140 DEG C in advance, Japan) 9.5 parts, Fuji changes into 2154,22 parts, furfural extract oil 6.5 parts, pre-mixing 30 minutes, takes out 30 minutes after completing under the vacuum of 0.05MPa; And then obtain part A by colloidal mill high speed dispersion, in 2.7:1 ratio by part A and part B epoxy resin (ethylene-stryene-glycidyl third fat 1:1:1, molecular weight: 2000, Changzhou radiance high-tech Chemical Co., Ltd., wherein microcapsule quality: epoxy resin quality=40:60 and microcapsule core are ethylene glycol and the OP-10 of 1:1) mixing, admix by the bitumen aggregate ratio of 5-8% again and gather materials, be incubated 50 minutes, carry out road pavement.
embodiment 7
The oxidized bitumen (state-run middle prompt friendship farm six branch oxidized bitumen factory) 47 parts being warmed up to 90-140 DEG C is added reactor, adds
n-phenyl maleimide 3 parts, is warmed up to 150-155 DEG C, keeps 20 minutes, after pressure stabilisation, passes into N
2, make total pressure remain on 0.25MPa; React after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add the diaminodiphenyl-methane 18.4 parts, the Fuji that are warming up to 90-140 DEG C in advance and change into 215X, 17 parts, aryl rubber oil 7.6 parts, pre-mixing 30 minutes, takes out 30 minutes after completing under the vacuum of 0.05MPa; And then obtain part A by colloidal mill high speed dispersion, in 4.3:1 ratio by part A and part B epoxy resin (E-44, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=20:80 and microcapsule core are ethylene glycol and the OP-10 of 2:1) mixing, admix by the bitumen aggregate ratio of 5-8% again and gather materials, be incubated 50 minutes, carry out road pavement.
embodiment 8
47 parts, the petroleum pitch (U.S.'s shell) being warmed up to 90-140 DEG C is added reactor, adds
n-phenyl maleimide 3 parts, is warmed up to 150-155 DEG C, keeps 20 minutes, after pressure stabilisation, passes into N
2, make total pressure remain on 0.25MPa; React after 4 hours, slow pressure release is to 0.1MPa.Then cool to 100-110 DEG C gradually, add the Epikure z being warming up to 90-140 DEG C in advance, 15.2 parts, Versamid 125,21 parts, pine tar system rubber oil 10 parts, pre-mixing 30 minutes, takes out 30 minutes after completing under the vacuum of 0.05MPa; And then obtain part A by colloidal mill high speed dispersion, in 8.7:1 ratio by part A and part B epoxy resin (E-44, Wuxi resin processing plant, wherein microcapsule quality: epoxy resin quality=20:80 and microcapsule core are ethylene glycol and the polyethylene glycol 6000 of 3:1) mixing, admix by the bitumen aggregate ratio of 5-8% again and gather materials, be incubated 50 minutes, carry out road pavement.
Pavement temperature of the present invention regulates surfacing material preparation method to have two kinds:
One method is, by the quality of formula, the matrix pitch after the dehydration being warmed up to 90-140 DEG C is added reactor, adds the maleimide or derivatives thereof of the 2-20% of asphalt quality, keep 10-60 minute, after pressure stabilisation, passes into N
2, make total pressure remain on 0.25-1MPa, react after 3-6 hour, slow pressure release is to 0.1MPa; Then cool to 100-110 DEG C gradually and add other material being warming up to the 90-100 DEG C of uniform component A of pre-mixing in advance, finally just obtain component A by high speed dispersor tool dispersions such as colloidal mills again.At 40 DEG C-80 DEG C, microcapsule are obtained B component in the epoxy by the dispersion that stirs.During use, by be warmed up to require temperature A, B two portions on request ratio mix, obtain high-performance thermosetting epoxy asphalt material of the present invention, can be sprayed within a certain period of time on road surface or steel plate as bituminous epoxy bonding layer material; If admix gather materials according to certain bitumen aggregate ratio (ratio of general high-performance thermosetting epoxy asphalt material and building stones is 4.0:100-9.3:100) again, also compacting on road surface of can mating formation within a certain period of time.
Another kind method is, by the quality of formula, the matrix pitch being warmed up to 90-140 DEG C is added reactor, the maleimide or derivatives thereof of the 2-20% of asphalt quality is joined in reactor, be warmed up to 140-160 DEG C of reaction 3-6 hour, after cool to other component that 100-110 DEG C adds the pre-mixing part A being completely warming up to 90-140 DEG C in advance gradually, finally just obtain part A by high speed dispersor tool dispersions such as colloidal mills again.At 40 DEG C-80 DEG C, microcapsule are obtained B component in the epoxy by the dispersion that stirs.During use, by be warmed up to require temperature A, B two portions on request ratio mix, obtain high-performance thermosetting epoxy asphalt material of the present invention, can be sprayed within a certain period of time on road surface or steel plate as bituminous epoxy bonding layer material; Gather materials if admix according to certain bitumen aggregate ratio again, also compacting on road surface of can mating formation within a certain period of time.
Claims (8)
1. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase regulates a surfacing material, and it is characterized in that: this material is made up of part A and part B, wherein, the mass ratio of part A and part B is 2.0:1-8:1;
The quality group of part A becomes:
Maleimide-modified pitch 40-84 part
Aliphatic amide 5-10 part
Polymeric amide 15-35 part
Compatilizer 1-15 part
The quality group of part B becomes:
Epoxy resin 55-85 part
Microcapsule 15-45 part of interior bag phase-change heat-storage material.
2. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: described Maleimide-modified pitch to be reacted with plain asphalt by maleimide and derivative thereof and obtains.
3. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 2 regulates surfacing material, it is characterized in that: described plain asphalt is petroleum pitch, oxidized bitumen, coal-tar pitch or lake pitch.
4. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: described aliphatic amide refers to the aliphatic amide containing more than 3 reactive hydrogens, polyamines polyene, polymethylene diamines class, or diamines corresponding to C 5 fraction and unsaturated aliphatic diamines, or the diamines containing aromatic nucleus; Or above-mentioned in one or several mixture.
5. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: described polymeric amide is low-molecular-weight polyamide resin and modified resin thereof, 40 DEG C of viscosity are 3,000-80, within 000mPa.s, the mixture of one or more in the low-molecular-weight polyamide resin of amine value within 50mgKOH/g-500mgKOH/g.
6. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: described compatilizer is the extraction oil of furfural section in oil refining, hydrogen phosphide cumene decomposes the phenolic aldehyde residual oil distillated, pine tar system rubber oil, coal tar system rubber oil, or the mixture of one or more in paraffinic base, cycloalkyl or aromatic base crude system rubber oil.
7. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: the phase-change heat-storage material that described microcapsule include is two kinds of phase change materials between solid-liquid or solid-solid phase-change temperature-10 DEG C-10 DEG C or 30 DEG C-60 DEG C, and wherein phase alternating temperature is the mixtures of one or more in paraffin, lipid acid, polyoxyethylene glycol, polyoxyethylene and modifier fatty alcohol-polyoxyethylene ether thereof at 30 DEG C of-60 DEG C of phase-change heat-storage materials; Wherein phase alternating temperature is the mixtures of one or more in ethylene glycol, glycerine, low molecular poly at-10 DEG C of-10 DEG C of phase-change heat-storage materials.
8. the pavement temperature based on Microcapsules Thermal Storage by Changing Phase according to claim 1 regulates surfacing material, it is characterized in that: described microcapsule and epoxy resin have consistency, and heat resisting temperature is more than 80 DEG C.
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| CN103289321B (en) * | 2013-07-01 | 2015-05-13 | 杨凌领航新材料科技开发有限公司 | Pavement thermoregulation paving material based on phase-change heat accumulation microcapsules |
| CN105774058A (en) * | 2016-03-09 | 2016-07-20 | 宿迁市高烁复合材料有限公司 | Self-repairing coiled material for roofs |
| CN106118608B (en) * | 2016-06-27 | 2019-02-26 | 长安大学 | A kind of high-temperature-resistant epoxy resin composite phase-change material and preparation method thereof |
| CN106398246B (en) * | 2016-08-30 | 2019-04-05 | 长安大学 | Slow-release microcapsule is improving the application in pitch anti-aging property |
| CN108130047A (en) * | 2017-12-12 | 2018-06-08 | 同济大学 | The preparation method of pitch low temperature thermoregulation agent based on the tetradecane/tetradecyl alchohol/cyanurotriamide modified urea resin |
| CN107987800A (en) * | 2017-12-12 | 2018-05-04 | 山西省交通科学研究院 | A kind of difunctional phase-change microcapsule for bituminous paving and preparation method thereof |
| CN110872443B (en) * | 2018-08-30 | 2021-08-06 | 中国石油化工股份有限公司 | Environment-friendly phase-change heat-storage modified asphalt and preparation method thereof |
| CN111395100A (en) * | 2020-03-17 | 2020-07-10 | 同济大学 | Asphalt road structure adjusts temperature |
| CN111303646A (en) * | 2020-03-26 | 2020-06-19 | 山东交通学院 | Modified asphalt capable of realizing self-temperature adjustment based on phase change microcapsules |
| CN115717033A (en) * | 2022-11-30 | 2023-02-28 | 新疆交通科学研究院有限责任公司 | High-permeability pavement coating material capable of recovering pavement aging asphalt performance and resisting ice condensation |
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