CN109233307A - Temperature self adjusting road asphalt material and preparation method thereof - Google Patents
Temperature self adjusting road asphalt material and preparation method thereof Download PDFInfo
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- CN109233307A CN109233307A CN201810779769.6A CN201810779769A CN109233307A CN 109233307 A CN109233307 A CN 109233307A CN 201810779769 A CN201810779769 A CN 201810779769A CN 109233307 A CN109233307 A CN 109233307A
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- polyethylene glycol
- pitch
- temperature
- expanded graphite
- self adjusting
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Abstract
The present invention relates to material and its preparation field, a kind of temperature self adjusting road asphalt material and preparation method thereof is disclosed.Temperature self adjusting road asphalt material includes following component: the pitch of 83.74-92.84%, the thermochromic powder of 1.76-7.04%, the polyethylene glycol of 4.41-8.82% and the expanded graphite of 0.63-1.26%.The preparation method is as follows: dry 16h will be placed in 80 DEG C of baking ovens weighed expanded graphite according to the above ratio, polyethylene glycol is dissolved in 60 DEG C of distilled water；Then expanded graphite is mixed with Aqueous Solutions of Polyethylene Glycol, the sonic oscillation 30min at 60 DEG C；Finally expanded graphite/polyethylene glycol mixture is set in 80 DEG C of vacuum ovens and is dried in vacuo 4h, obtains composite phase-change material；Pitch, which is added, to be heated to 130-160 DEG C in shear mixer and keeps temperature, is added thermochromic powder and composite phase-change material, is started shear mixer, the high-speed stirred 0.5-1.5h under the revolving speed of 2000-4000rpm.This method prepares asphalt material with excellent road surface temperature control effect and ageing-resistant performance, can effectively extend the service life of bituminous pavement.
Description
Technical field
The present invention relates to material and its preparation fields, and in particular to temperature self adjusting road asphalt material and its preparation side
Method.
Background technique
Since bituminous pavement has excellent pavement performance and comfortable train operation performance, it is each to have become China or even the world
Main road surface types used in state's expressway construction.However, on the one hand, the dark brown of bituminous cements apparently makes it to too
Solar irradiation has very strong absorbability (absorptivity is up to 0.80-0.95), so that summer road table temperature is up to 70-80 DEG C, meeting
Cause road surface to generate track, gather around a series of high temperature diseases of packet, shortens road service life；On the other hand, pitch has as one kind
Machine high molecular material, in production or use process, aging easily occurs for the factors effect such as heated, oxygen, light, water, is hardened and becomes fragile,
As a result the generation of the diseases such as pavement crack, peeling, pit slot is accelerated, to also affect Pavement of Asphalt Road Performance and use the longevity
Life.Therefore, a kind of ageing-resistant pitch that had not only been adjustable pavement temperature again is prepared for the durability of improvement bituminous pavement
It is of great significance.
A large amount of thermal energy are absorbed or discharged during phase-state change using phase-change material, and keep the spy of temperature approximately constant
Point, is applied in ground surface material, to realize that road surface can carry out temperature self adjusting arrival according to environment temperature and slow down road surface
The research of temperature disease has received significant attention and has achieved positive progress.Xavier etc. by phase transition temperature at 2-5 DEG C just
Tetradecane phase-change material be added bituminous pavement top in, with reduce phenomenon icy on road (Xavier C, Nicaise D,
Rachidi S.The use of phase change materials to delay pavement freezing[C]//
XIII International Winter Road Congress,PIARC.2010).Hu Shuguang etc. is by polyethylene glycol phase transformation material
Material is applied to asphalt, and can be reduced under the conditions of 39 DEG C of day with high temperature are shone by measuring it by 9 DEG C of pavement temperature；And in 60 DEG C of conditions
Under, dynamic stability is that (Hu Shuguang, Li Qian, Huang continue the poly- second of the phase-change material such as dragon for the 2 times or more of common AC-20 asphalt
Research [J] the highway of glycol applied to asphalt feasibility, 2009, (7): 291-295).Lin Haodong etc. is with porous expansion
Graphite is the temperature sensitivity that expanded graphite/polyethylene glycol composite phase-change material made from carrier can reduce pitch, is had to pitch
There is good temperature regulating effect, can effectively mitigate the temperature disease of bituminous concrete, extends the service life (Lin Hao of road
East, the such as Zhang Dong, Chen Meizhu expanded graphite/polyethylene glycol composite phase-change material temperature control effect and with bitumen compatibility study [J]
Wuhan University of Technology's journal (traffic science and engineering version), 2018,42 (1): 163-168).Although phase-change material is in pavement temperature
Regulation aspect plays obvious action, and there is also some negative effects.Polyethylene glycol is added in the researchs such as Cao Changbin discovery
Phase-change material can reduce the cryogenic properties such as bitumen ductility (Cao C B, Luo Y M, Li W H.Effect of
polyethylene glycol on the heat storage performance of asphalt and asphalt
mixture[J].New Chemical Materials,2013,41(4):137-139).Ten thousand tunnels etc. have studied variety classes not
With influence of the phase-change material to asphalt mastic rheological property of volume, the asphalt mastic Rutting parameter that phase-change material is mixed in discovery is reaching
There is reduction by a small margin after to phase transition temperature, illustrates that phase-change material can be to the anti-rut behavior of pitch shadow after undergoing phase transition
Ring (preparation of ten thousand road phase-change temperature control bituminous concretes and performance study [D] Wuhan University of Technology, 2012).The discovery such as Liu Songtao
The addition of partial phase change material is so that the three norms loss late after the short-term heat ageing of pitch increases, and to pitch short ageing
Long-term behaviour and high-temperature stability afterwards has an adverse effect (Liu Songtao, shadow of horse Biao, Li Chao the phase-change material to asphaltic nature
Ring the Heilungkiang [J] transport science and techonologies, 2010,33 (11): 46-47).
Phase-change material is used in ground surface material play the method for adjusting pavement temperature in addition to above-mentioned, it will be organic reversible thermotropic
Off-color material, which is added in road asphalt, can also play the role of adjusting pavement temperature.Organic Reversible Thermochromic Materials are a kind of energy
The off-color material of its own shade is dynamically adjusted according to variation of ambient temperature.When environment temperature is lower than its discoloring temperature
When, the aobvious dark color of material is lower to the reflectivity of solar radiation；When environment temperature is higher than its discoloring temperature, material becomes colorless
Or light color, it is higher to the reflectivity of solar radiation.Jianying Hu et al. is the study found that compared with plain asphalt road surface, respectively
Class thermochromism Modified Bitumen Pavement has lower pavement temperature in summer day, and wherein maximum decreases by 6.6 DEG C, and
Night, each pavement temperature was not much different；In winter, almost whole day is all higher than commonly all kinds of thermochromism Modified Bitumen Pavement temperature
Bituminous pavement, highest amplification have 1 DEG C.Illustrate compared with plain asphalt road surface, thermochromism Modified Bitumen Pavement summer temp is more
Low, winter temperature is higher, and annual range of temperature is smaller, is more advantageous to raising (Hu the J Y, Yu of durability of asphalt pavement
X.Experimental Study of Sustainable Asphalt Binder:Influence of Thermochromic
Materials[J].Transportation Research Record Journal of the Transportation
Research Board,2013,2372(2372):108-115).Zhang Henglong et al. is also the study found that thermochromic material is mixed
Enter not only improve the high and low temperature performance of matrix pitch, but also the ability of pitch heat resistanceheat resistant oxygen and photooxidation resistance can also be improved
(Zhang H L,Chen Z H,Li L,Zhu C Z.Evaluation of aging behaviors of asphalt
with different thermochromic powders[J].Construction&Building Materials,2017,
155:1198-1205).However, thermochromism modified pitch is there is also certain defect, than as in the night or winter road surface quilt
When snow and ice cover, in the case where no solar radiation direct irradiation, thermochromism modified pitch can not be by adjusting to the sun
The volume reflection of radiation carrys out road pavement temperature and plays preferable adjustment effect.
In summary the advantage and disadvantage of two kinds of materials, phase-change material and organic Reversible Thermochromic Materials is multiple by a certain percentage
A kind of more superior temperature self adjusting road asphalt material of performance can be prepared with being incorporated into road asphalt.Its reason exists
In on the one hand organic Reversible Thermochromic Materials have the characteristics that improve pitch high and low temperature and ageing-resistant performance, this can offset
Adverse effect of the phase-change material to pitch low temperature and ageing-resistant performance；On the other hand, phase-change material can make up in night or winter
The regulating power of season road surface road pavement temperature when being failed by the organic Reversible Thermochromic Materials mechanism of action of snow and ice cover.
Summary of the invention
It is unfavorable the purpose of the invention is to overcome phase-change material of the existing technology to generate pitch ageing-resistant performance
The problem of reducing with the regulating power of organic Reversible Thermochromic Materials road pavement temperature in no light is influenced, a kind of temperature is provided
Be self-regulated road asphalt material and preparation method thereof, and the material ageing-resistant performance of preparation is good, and has very in the case where no light
Good temperature regulating power.
To achieve the goals above, one aspect of the present invention provides a kind of temperature self adjusting road asphalt material, including as follows
Component:
Preferably, the pitch is bi tumenf orr oad, and softening point is 42-53 DEG C, needle penetration (25 DEG C, 100g, 5s)
Greater than 40dmm.
Preferably, the thermochromic powder is red, black, blue three kinds of thermochromic powders, discoloring temperature 28-32
℃。
Preferably, the polyethylene glycol relative molecular weight is 2000, and phase transition temperature is 50-55 DEG C, and latent heat of phase change is
180J/g。
Preferably, the expanded graphite average grain diameter is 150 μm, expansion ratio 270mL/g.
Second aspect of the present invention provides a kind of preparation method of temperature self adjusting road asphalt material, comprising the following steps:
(1) following component of certain mass is weighed according to following mass percent:
(2)) expanded graphite is placed in 80 DEG C of baking ovens dry 16h, and polyethylene glycol is dissolved in 60 DEG C of distilled water；Then
Expanded graphite after drying is mixed with Aqueous Solutions of Polyethylene Glycol, the sonic oscillation 30min at 60 DEG C；Finally by expanded graphite/poly-
Ethylene glycol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo 4h, obtains expanded graphite/polyethylene glycol composite phase-change material；
(2) pitch is added in shear mixer and is heated to 130-160 DEG C and keeps temperature, adds thermochromic powder and swollen
Swollen graphite/polyethylene glycol composite phase-change material starts shear mixer, the high-speed stirred 0.5- under the revolving speed of 2000-4000rpm
1.5h。
Preferably, the expanded graphite and the polyethylene glycol mass ratio are 1:7.
Through the above technical solutions, the asphalt material of preparation has excellent road surface temperature control effect and ageing-resistant performance, energy
Effectively extend the service life of bituminous pavement.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of temperature self adjusting road asphalt material, comprising: 83.74% pitch, 7.04% red thermochromism powder
End, 8.07% polyethylene glycol and 1.15% expanded graphite.
The pitch is bi tumenf orr oad, and softening point is 48.6 DEG C, and needle penetration (25 DEG C, 100g, 5s) is
67.8dmm。
A kind of preparation method of temperature self adjusting road asphalt material, comprising the following steps:
(1) by pitch 83.74%, red thermochromic powder 7.04%, polyethylene glycol 8.07% and expanded graphite
1.15% weighs the said components of certain mass；
(2) expanded graphite is placed in 80 DEG C of baking ovens and heats 16h, to remove moisture therein；Polyethylene glycol is dissolved in 60
DEG C distilled water in, prepare Aqueous Solutions of Polyethylene Glycol；The expanded graphite after drying is mixed with Aqueous Solutions of Polyethylene Glycol again, and
Sonic oscillation 30min at 60 DEG C；Finally expanded graphite/polyethylene glycol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo
4h, the hole for making polyethylene glycol enter expanded graphite finally obtain the expansion stone of expanded graphite Yu polyethylene glycol mass ratio 1:7
Ink/polyethylene glycol composite phase-change material；
(3) it is 150 ± 5 DEG C that pitch, which is added in shear mixer heated asphalt to 150 DEG C and keeps temperature, will be red thermotropic
Discoloration powder, expanded graphite/polyethylene glycol composite phase-change material are added in pitch, start shear mixer, 4000rpm's
Under revolving speed stir 1h to get.
It is experiment sample with temperature self adjusting road asphalt, not add the drip of phase-change material and organic Reversible Thermochromic Materials
Blueness is comparative sample, and the two is carried out thin film oven aging (TFOT).Viscosity and softening point test method press " highway engineering drip respectively
Green and Asphalt Mixture Experiment regulation " regulation of T0661-2011 and T 0606-2011 carries out in (JTG E 20-2011).?
To following table 1.
Table 1 tests sample and comparative sample viscosity and softening point before and after TFOT aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 481.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 746.9 | 737.4 |
| Viscosity aging index/% | 55.2 | 56.9 |
| Softening point before aging/DEG C | 47 | 46.5 |
| Aging after-tack point/DEG C | 55.4 | 55.8 |
| Softening point increment/DEG C | 8.4 | 9.3 |
As shown in Table 1, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after TFOT aging, viscosity aging finger
Several and softening point increment is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials, thus has more
Excellent resistance to short-term thermal-oxidative aging property.
Sample will be tested and comparative sample carries out UV aging in 6 days in 60 DEG C of ultraviolet (UV) ageing ovens, and obtain data such as following table institute
Show.
Table 2 tests sample and comparative sample viscosity and softening point before and after UV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 481.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 859.5 | 858.7 |
| Viscosity aging index/% | 78.6 | 82.7 |
| Softening point before aging/DEG C | 47 | 46.5 |
| Aging after-tack point/DEG C | 56.9 | 57 |
| Softening point increment/DEG C | 9.9 | 10.5 |
As shown in Table 2, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after UV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to UV aging.
Sample and comparative sample will be tested in pressure ageing oven (PAV) aging, it is as shown in the table to obtain data.
Table 3 tests sample and comparative sample viscosity and softening point before and after PAV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 481.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 1116.8 | 1378.0 |
| Viscosity aging index/% | 132.0 | 193.2 |
| Softening point before aging/DEG C | 47 | 46.5 |
| Aging after-tack point/DEG C | 59.3 | 63.8 |
| Softening point increment/DEG C | 12.3 | 17.3 |
As shown in Table 3, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after PAV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to long-term thermal-oxidative aging property.
Compared with plain asphalt mixture, by temperature self adjusting road asphalt manufactured in the present embodiment on summer surveyed road surface
The lower maximum temperature range of decrease is 8.4 DEG C, and maximum temperature amplification is 2.7 DEG C under surveyed road surface in winter, illustrates the temperature self adjusting road
Road pitch has better temperature control effect.
10 DEG C of ductility tests, ductility value 24.3cm are carried out to temperature self adjusting road asphalt manufactured in the present embodiment.Not
Adding 10 DEG C of ductility values of phase-change material and the plain asphalt of organic Reversible Thermochromic Materials is 31.2cm.Ductility presses " highway engineering
Pitch and Asphalt Mixture Experiment regulation " regulation of T 0605-2011 carries out in (JTG E 20-2011).The two is compared, and is added
Phase-change material and organic Reversible Thermochromic Materials have certain influence to pitch ductility, but influence little.
Embodiment 2
A kind of temperature self adjusting road asphalt material, comprising: 92.84% pitch, 1.76% black fever mutagens toner
End, 4.73% polyethylene glycol and 0.67% expanded graphite.
The pitch is bi tumenf orr oad, and softening point is 48.6 DEG C, and needle penetration (25 DEG C, 100g, 5s) is
67.8dmm。
A kind of preparation method of temperature self adjusting road asphalt material, comprising the following steps:
(1) pitch 92.84%, black thermochromic powder 1.76%, polyethylene glycol 4.73% and expanded graphite are pressed
0.67% weighs the said components of certain mass；
(2) expanded graphite is placed in 80 DEG C of baking ovens and heats 16h, to remove moisture therein；Polyethylene glycol is dissolved in 60
DEG C distilled water in, prepare Aqueous Solutions of Polyethylene Glycol；The expanded graphite after drying is mixed with Aqueous Solutions of Polyethylene Glycol again, and
Sonic oscillation 30min at 60 DEG C；Finally expanded graphite/polyethylene glycol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo
4h, the hole for making polyethylene glycol enter expanded graphite finally obtain the expansion stone of expanded graphite Yu polyethylene glycol mass ratio 1:7
Ink/polyethylene glycol composite phase-change material；
(3) it is 150 ± 5 DEG C that pitch, which is added in shear mixer heated asphalt to 150 DEG C and keeps temperature, will be red thermotropic
Discoloration powder, expanded graphite/polyethylene glycol composite phase-change material are added in pitch, start shear mixer, 4000rpm's
Under revolving speed stir 1.0h to get.
It is experiment sample with temperature self adjusting road asphalt, not add the drip of phase-change material and organic Reversible Thermochromic Materials
Blueness is comparative sample, and the two is carried out thin film oven aging (TFOT).Viscosity and softening point test method press " highway engineering drip respectively
Green and Asphalt Mixture Experiment regulation " regulation of T0661-2011 and T 0606-2011 carries out in (JTG E 20-2011).?
To following table 4.
Table 4 tests sample and comparative sample viscosity and softening point before and after TFOT aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 478.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 736.2 | 737.4 |
| Viscosity aging index/% | 53.9 | 56.9 |
| Softening point before aging/DEG C | 46.9 | 46.5 |
| Aging after-tack point/DEG C | 54.8 | 55.8 |
| Softening point increment/DEG C | 7.9 | 9.3 |
As shown in Table 4, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after TFOT aging, viscosity aging finger
Several and softening point increment is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials, thus has more
Excellent resistance to short-term thermal-oxidative aging property.
Sample will be tested and comparative sample carries out UV aging in 6 days in 60 DEG C of ultraviolet (UV) ageing ovens, and obtain data such as following table institute
Show.
Table 5 tests sample and comparative sample viscosity and softening point before and after UV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 478.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 841.5 | 858.7 |
| Viscosity aging index/% | 75.9 | 82.7 |
| Softening point before aging/DEG C | 46.9 | 46.5 |
| Aging after-tack point/DEG C | 55.7 | 57 |
| Softening point increment/DEG C | 8.8 | 10.5 |
As shown in Table 5, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after UV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to UV aging.
Sample and comparative sample will be tested in pressure ageing oven (PAV) aging, it is as shown in the table to obtain data.
Table 6 tests sample and comparative sample viscosity and softening point before and after PAV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 478.3 | 470 |
| Viscosity/cp after 135 DEG C of agings | 1028.8 | 1378.0 |
| Viscosity aging index/% | 115.1 | 193.2 |
| Softening point before aging/DEG C | 46.9 | 46.5 |
| Aging after-tack point/DEG C | 58.7 | 63.8 |
| Softening point increment/DEG C | 11.8 | 17.3 |
As shown in Table 6, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after PAV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to long-term thermal-oxidative aging property.
Compared with plain asphalt mixture, by temperature self adjusting road asphalt manufactured in the present embodiment on summer surveyed road surface
The lower maximum temperature range of decrease is 6.2 DEG C, and maximum temperature amplification is 1.5 DEG C under surveyed road surface in winter, illustrates the temperature self adjusting road
Road pitch has better temperature control effect.But compared with Example 1, as phase-change material and organic Reversible Thermochromic Materials are mixed
The reduction of amount, the temperature self adjusting road asphalt temperature control effect also decrease.
10 DEG C of ductility tests, ductility value 27.3cm are carried out to temperature self adjusting road asphalt manufactured in the present embodiment.Not
Adding 10 DEG C of ductility values of phase-change material and the plain asphalt of organic Reversible Thermochromic Materials is 31.9cm.Ductility presses " highway engineering
Pitch and Asphalt Mixture Experiment regulation " regulation of T 0605-2011 carries out in (JTG E 20-2011).The two is compared, and is added
Phase-change material and organic Reversible Thermochromic Materials have certain influence to pitch ductility, but influence little.
Embodiment 3
A kind of temperature self adjusting road asphalt material, comprising: 91.22% pitch, 3.74% blue fever mutagens toner
End, 4.41% polyethylene glycol and 0.63% expanded graphite.
The pitch is bi tumenf orr oad, and softening point is 48.6 DEG C, and needle penetration (25 DEG C, 100g, 5s) is
67.8dmm。
A kind of preparation method of temperature self adjusting road asphalt material, comprising the following steps:
(1) by pitch 91.22%, blue thermochromic powder 3.74%, polyethylene glycol 4.41% and expanded graphite
0.63% weighs the said components of certain mass；
(2) expanded graphite is placed in 80 DEG C of baking ovens and heats 16h, to remove moisture therein；Polyethylene glycol is dissolved in 60
DEG C distilled water in, prepare Aqueous Solutions of Polyethylene Glycol；The expanded graphite after drying is mixed with Aqueous Solutions of Polyethylene Glycol again, and
Sonic oscillation 30min at 60 DEG C；Finally expanded graphite/polyethylene glycol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo
4h, the hole for making polyethylene glycol enter expanded graphite finally obtain the expansion stone of expanded graphite Yu polyethylene glycol mass ratio 1:7
Ink/polyethylene glycol composite phase-change material；
(3) pitch be added shear mixer in heated asphalt to 160 DEG C and keep temperature be 160 ± 5 DEG C, will blue it is thermotropic
Discoloration powder, expanded graphite/polyethylene glycol composite phase-change material are added in pitch, start shear mixer, 2000rpm's
Under revolving speed stir 0.5h to get.
It is experiment sample with temperature self adjusting road asphalt, not add the drip of phase-change material and organic Reversible Thermochromic Materials
Blueness is comparative sample, and the two is carried out thin film oven aging (TFOT).Viscosity and softening point test method press " highway engineering drip respectively
Green and Asphalt Mixture Experiment regulation " regulation of T0661-2011 and T 0606-2011 carries out in (JTG E 20-2011).?
To following table 7.
Table 7 tests sample and comparative sample viscosity and softening point before and after TFOT aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 488.4 | 462 |
| Viscosity/cp after 135 DEG C of agings | 766.2 | 736.5 |
| Viscosity aging index/% | 56.9 | 59.4 |
| Softening point before aging/DEG C | 47.5 | 46.8 |
| Aging after-tack point/DEG C | 55.9 | 55.6 |
| Softening point increment/DEG C | 8.4 | 8.8 |
As shown in Table 7, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after TFOT aging, viscosity aging finger
Several and softening point increment is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials, thus has more
Excellent resistance to short-term thermal-oxidative aging property.
Sample will be tested and comparative sample carries out UV aging in 6 days in 60 DEG C of ultraviolet (UV) ageing ovens, and obtain data such as following table institute
Show.
Table 8 tests sample and comparative sample viscosity and softening point before and after UV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 488.4 | 462 |
| Viscosity/cp after 135 DEG C of agings | 862.5 | 873.7 |
| Viscosity aging index/% | 76.6 | 89.1 |
| Softening point before aging/DEG C | 47.5 | 46.8 |
| Aging after-tack point/DEG C | 57.3 | 57.9 |
| Softening point increment/DEG C | 9.8 | 11.1 |
As shown in Table 8, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after UV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to UV aging.
Sample and comparative sample will be tested in pressure ageing oven (PAV) aging, it is as shown in the table to obtain data.
Table 9 tests sample and comparative sample viscosity and softening point before and after PAV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 488.4 | 462 |
| Viscosity/cp after 135 DEG C of agings | 1114.7 | 1358.0 |
| Viscosity aging index/% | 128.2 | 193.9 |
| Softening point before aging/DEG C | 47.5 | 46.8 |
| Aging after-tack point/DEG C | 59.8 | 63.2 |
| Softening point increment/DEG C | 12.3 | 16.4 |
As shown in Table 9, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after PAV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to long-term thermal-oxidative aging property.
Compared with plain asphalt mixture, by temperature self adjusting road asphalt manufactured in the present embodiment on summer surveyed road surface
The lower maximum temperature range of decrease is 5.9 DEG C, and maximum temperature amplification is 1.3 DEG C under surveyed road surface in winter, illustrates the temperature self adjusting road
Road pitch has better temperature control effect.
10 DEG C of ductility tests, ductility value 27.2cm are carried out to temperature self adjusting road asphalt manufactured in the present embodiment.Not
Adding 10 DEG C of ductility values of phase-change material and the plain asphalt of organic Reversible Thermochromic Materials is 31.6cm.Ductility presses " highway engineering
Pitch and Asphalt Mixture Experiment regulation " regulation of T 0605-2011 carries out in (JTG E 20-2011).The two is compared, and is added
Phase-change material and organic Reversible Thermochromic Materials have certain influence to pitch ductility, but influence little.
Embodiment 4
A kind of temperature self adjusting road asphalt material, comprising: 86.18% pitch, 3.74% blue fever mutagens toner
End, 8.82% polyethylene glycol and 1.26% expanded graphite.
The pitch is bi tumenf orr oad, and softening point is 48.6 DEG C, and needle penetration (25 DEG C, 100g, 5s) is
67.8dmm。
A kind of preparation method of temperature self adjusting road asphalt material, comprising the following steps:
(1) by pitch 86.18%, blue thermochromic powder 3.74%, polyethylene glycol 8.82% and expanded graphite
1.26% weighs the said components of certain mass；
(2) expanded graphite is placed in 80 DEG C of baking ovens and heats 16h, to remove moisture therein；Polyethylene glycol is dissolved in 60
DEG C distilled water in, prepare Aqueous Solutions of Polyethylene Glycol；The expanded graphite after drying is mixed with Aqueous Solutions of Polyethylene Glycol again, and
Sonic oscillation 30min at 60 DEG C；Finally expanded graphite/polyethylene glycol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo
4h, the hole for making polyethylene glycol enter expanded graphite finally obtain the expansion stone of expanded graphite Yu polyethylene glycol mass ratio 1:7
Ink/polyethylene glycol composite phase-change material；
(3) pitch be added shear mixer in heated asphalt to 130 DEG C and keep temperature be 130 ± 5 DEG C, will blue it is thermotropic
Discoloration powder, expanded graphite/polyethylene glycol composite phase-change material are added in pitch, start shear mixer, 2000rpm's
Under revolving speed stir 1.5h to get.
It is experiment sample with temperature self adjusting road asphalt, not add the drip of phase-change material and organic Reversible Thermochromic Materials
Blueness is comparative sample, and the two is carried out thin film oven aging (TFOT).Viscosity and softening point test method press " highway engineering drip respectively
Green and Asphalt Mixture Experiment regulation " regulation of T0661-2011 and T 0606-2011 carries out in (JTG E 20-2011).?
To following table 10.
Table 10 tests sample and comparative sample viscosity and softening point before and after TFOT aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 498.8 | 462.3 |
| Viscosity/cp after 135 DEG C of agings | 786.5 | 746.5 |
| Viscosity aging index/% | 57.7 | 61.5 |
| Softening point before aging/DEG C | 47.9 | 47.2 |
| Aging after-tack point/DEG C | 56.3 | 56.6 |
| Softening point increment/DEG C | 8.4 | 9.4 |
As shown in Table 10, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after TFOT aging, viscosity aging finger
Several and softening point increment is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials, thus has more
Excellent resistance to short-term thermal-oxidative aging property.
Sample will be tested and comparative sample carries out UV aging in 6 days in 60 DEG C of ultraviolet (UV) ageing ovens, and obtain data such as following table institute
Show.
Table 11 tests sample and comparative sample viscosity and softening point before and after UV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 498.8 | 462.3 |
| Viscosity/cp after 135 DEG C of agings | 888.3 | 896.2 |
| Viscosity aging index/% | 78.1 | 93.9 |
| Softening point before aging/DEG C | 47.9 | 47.2 |
| Aging after-tack point/DEG C | 58.4 | 58.8 |
| Softening point increment/DEG C | 10.5 | 11.6 |
As shown in Table 11, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after UV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to UV aging.
Sample and comparative sample will be tested in pressure ageing oven (PAV) aging, it is as shown in the table to obtain data.
Table 12 tests sample and comparative sample viscosity and softening point before and after PAV aging
| Test sample | Comparative sample | |
| Viscosity/cp before 135 DEG C of agings | 498.8 | 462.3 |
| Viscosity/cp after 135 DEG C of agings | 1164.5 | 1388.6 |
| Viscosity aging index/% | 133.5 | 200.4 |
| Softening point before aging/DEG C | 47.9 | 47.2 |
| Aging after-tack point/DEG C | 62.8 | 64.7 |
| Softening point increment/DEG C | 14.9 | 17.5 |
As shown in Table 12, by temperature self adjusting road asphalt and not plus phase-change material and organic Reversible Thermochromic Materials
Pitch is compared, and the pitch of addition phase-change material and organic Reversible Thermochromic Materials is after PAV aging, viscosity aging index
It is significantly lower than the pitch for not adding phase-change material and organic Reversible Thermochromic Materials with softening point increment, thus has more excellent
Good resistance to long-term thermal-oxidative aging property.
Compared with plain asphalt mixture, by temperature self adjusting road asphalt manufactured in the present embodiment on summer surveyed road surface
The lower maximum temperature range of decrease is 7.7 DEG C, and maximum temperature amplification is 2.4 DEG C under surveyed road surface in winter, illustrates the temperature self adjusting road
Road pitch has better temperature control effect.
10 DEG C of ductility tests, ductility value 21.2cm are carried out to temperature self adjusting road asphalt manufactured in the present embodiment.Not
Adding 10 DEG C of ductility values of phase-change material and the plain asphalt of organic Reversible Thermochromic Materials is 34.6cm.Ductility presses " highway engineering
Pitch and Asphalt Mixture Experiment regulation " regulation of T 0605-2011 carries out in (JTG E 20-2011).The two is compared, and is added
Phase-change material and organic Reversible Thermochromic Materials have certain influence to pitch ductility, but influence little.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (7)
1. a kind of temperature self adjusting road asphalt material, which is characterized in that including following component:
2. temperature self adjusting road asphalt material according to claim 1, which is characterized in that the pitch is road petroleum
Pitch, softening point are 42-53 DEG C, and 25 DEG C of needle penetrations are greater than 40dmm.
3. temperature self adjusting road asphalt material according to claim 1, which is characterized in that the thermochromic powder is
Red, black, blue three kinds of thermochromic powders, discoloring temperature are 28-32 DEG C.
4. temperature self adjusting road asphalt material according to claim 1, which is characterized in that opposite point of the polyethylene glycol
Protonatomic mass is 2000, and phase transition temperature is 50-55 DEG C, latent heat of phase change 180J/g.
5. temperature self adjusting road asphalt material according to claim 1, which is characterized in that the expanded graphite is averaged grain
Diameter is 150 μm, expansion ratio 270mL/g.
6. a kind of preparation method of temperature self adjusting road asphalt material, which comprises the following steps:
(1) following component of certain mass is weighed according to following mass percent:
(2) expanded graphite is placed in 80 DEG C of baking ovens dry 16h, and polyethylene glycol is dissolved in 60 DEG C of distilled water；Then drying
Expanded graphite afterwards is mixed with Aqueous Solutions of Polyethylene Glycol, the sonic oscillation 30min at 60 DEG C；Finally by expanded graphite/poly- second two
Alcohol mixture is placed in 80 DEG C of vacuum ovens and is dried in vacuo 4h, obtains expanded graphite/polyethylene glycol composite phase-change material；
(3) pitch, which is added, is heated to 130-160 DEG C in shear mixer and keeps temperature, addition thermochromic powder and expansion stone
Ink/polyethylene glycol composite phase-change material starts shear mixer, the high-speed stirred 0.5- under the revolving speed of 2000-4000rpm
1.5h。
7. the preparation method of temperature self adjusting road asphalt material according to claim 6, which is characterized in that the expansion
Graphite and the polyethylene glycol mass ratio are 1:7.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971190A (en) * | 2019-03-18 | 2019-07-05 | 东南大学 | A kind of thermochromism pitch and preparation method thereof of the reversible regulation of temperature |
| CN110879110A (en) * | 2019-11-18 | 2020-03-13 | 东南大学 | Indoor simulation method for temperature field and cooling durability of thermochromic asphalt pavement |
| WO2021035818A1 (en) * | 2019-08-26 | 2021-03-04 | 张立强 | Phase change heat storage asphalt and preparation method therefor |
| CN112624668A (en) * | 2020-12-31 | 2021-04-09 | 武汉理工大学 | Antiskid and anti-icing-nighttime visible asphalt pavement material and preparation method thereof |
| CN113278177A (en) * | 2021-05-24 | 2021-08-20 | 重庆禾维科技有限公司 | Reversible thermochromic sunlight greenhouse material and preparation method and application thereof |
| CN115201250A (en) * | 2022-09-14 | 2022-10-18 | 中铁三局集团第三工程有限公司 | Quantification method for thermal reversible aging degree of cold-recycling asphalt mixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009019158A2 (en) * | 2007-08-06 | 2009-02-12 | Shell Internationale Research Maatschappij B.V. | Asphalt mixture |
| CN107011689A (en) * | 2017-04-27 | 2017-08-04 | 湖南大学 | A kind of ageing-resistant thermochromism modified pitch and preparation method thereof |
| CN107418232A (en) * | 2017-08-25 | 2017-12-01 | 江苏天诺环境工程技术开发有限公司 | A kind of high durable thermochromism modified pitch and preparation method thereof |
-
2018
- 2018-07-16 CN CN201810779769.6A patent/CN109233307A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009019158A2 (en) * | 2007-08-06 | 2009-02-12 | Shell Internationale Research Maatschappij B.V. | Asphalt mixture |
| CN107011689A (en) * | 2017-04-27 | 2017-08-04 | 湖南大学 | A kind of ageing-resistant thermochromism modified pitch and preparation method thereof |
| CN107418232A (en) * | 2017-08-25 | 2017-12-01 | 江苏天诺环境工程技术开发有限公司 | A kind of high durable thermochromism modified pitch and preparation method thereof |
Non-Patent Citations (8)
| Title |
|---|
| DIONYSIA-DENIA KOLOKOTSA等: "《Advances in the Development of Cool Materials for the Built Environment》", 20 February 2013, BENTHAM SCIENCE PUBLISHERS * |
| HENGLONG ZHANG等: ""Evaluation of aging behaviors of asphalt with different thermochromic powders"", 《CONSTRUCTION AND BUILDING MATERIALS》 * |
| HENGLONG ZHANG等: ""Physical,rheological and chemical characterization of aging behaviors of thermochromic asphalt binder"", 《FUEL》 * |
| SHIXIONG YI等: ""Preparation of composite thermochromic and phase-change materials by the sol-gel method and its application in textiles"", 《THE JOURNAL OF THE TEXTILE INSTITUTE》 * |
| 刘松涛等: ""相变材料对沥青性质的影响"", 《黑龙江交通科技》 * |
| 吴渝玲: ""基于有限元温致变色沥青路面路表热特性研究"", 《重庆交通大学学报（自然科学版）》 * |
| 曹长斌等: ""聚乙二醇对沥青及其混合料储热性能的影响"", 《化工新型材料》 * |
| 林浩东等: ""膨胀石墨/聚乙二醇复合相变材料控温效果及与沥青相容性研究"", 《武汉理工大学学报（交通科学与工程版）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971190A (en) * | 2019-03-18 | 2019-07-05 | 东南大学 | A kind of thermochromism pitch and preparation method thereof of the reversible regulation of temperature |
| WO2021035818A1 (en) * | 2019-08-26 | 2021-03-04 | 张立强 | Phase change heat storage asphalt and preparation method therefor |
| CN110879110A (en) * | 2019-11-18 | 2020-03-13 | 东南大学 | Indoor simulation method for temperature field and cooling durability of thermochromic asphalt pavement |
| CN112624668A (en) * | 2020-12-31 | 2021-04-09 | 武汉理工大学 | Antiskid and anti-icing-nighttime visible asphalt pavement material and preparation method thereof |
| CN112624668B (en) * | 2020-12-31 | 2022-07-19 | 武汉理工大学 | Antiskid and anti-icing night visible asphalt pavement material and preparation method thereof |
| CN113278177A (en) * | 2021-05-24 | 2021-08-20 | 重庆禾维科技有限公司 | Reversible thermochromic sunlight greenhouse material and preparation method and application thereof |
| CN115201250A (en) * | 2022-09-14 | 2022-10-18 | 中铁三局集团第三工程有限公司 | Quantification method for thermal reversible aging degree of cold-recycling asphalt mixture |
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