CN108751801A - A kind of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture and preparation method thereof - Google Patents
A kind of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture and preparation method thereof Download PDFInfo
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- CN108751801A CN108751801A CN201810671767.5A CN201810671767A CN108751801A CN 108751801 A CN108751801 A CN 108751801A CN 201810671767 A CN201810671767 A CN 201810671767A CN 108751801 A CN108751801 A CN 108751801A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
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Abstract
A kind of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture and preparation method thereof, according to the mass fraction, including 4~6 parts of pitch gathers materials 100 parts asphalt, polyurethane/1~20 part of carbon black composite solid-solid phase-change, 1~5 part of miberal powder；The synthesis material of polyurethane/carbon black composite solid-solid phase-change includes soft segment, hard section, expands row agent and carbon black.Preparation method includes that will first gather materials and polyurethane/carbon black composite solid-solid phase-change mix at 140 DEG C~180 DEG C, obtains mix mixture a；Again by pitch and mix mixture a mixs at 140 DEG C~180 DEG C, mix mixture b is obtained；It finally by miberal powder and mix mixture b mixs at 140 DEG C~180 DEG C, is cooled to room temperature, obtains polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture.Every excellent road performance of modified asphalt mixture of the present invention is prepared simply, of low cost.
Description
Technical field
The present invention relates to material processing fields, and in particular to a kind of polyurethane/carbon black composite solid-solid phase-change modification drip
Green mixture and preparation method thereof, it is intended to improve every pavement performance of asphalt, ensure road transport capacity.
Background technology
Bituminous paving is widely used in urban road and highway with its excellent pavement performance, is China Higher grade
The main pavement structure form of highway.Surface material of the asphalt as bituminous paving, directly contacts with external environment.Drip
Green mixture is a kind of temperature-sensitive material, mechanical behavior and performance be affected by temperature it is larger, especially it is lasting it is high,
Under low temperature and fast cooling effect, thermostabilities disease and cold cracking, the temperature such as bituminous paving can produce track, gather around packet, pushing
Crack etc., and under low temperature sleet and snow ice weather, road surface will produce solidifying ice frost, seriously affect the normal of bituminous paving
Using and service life, while also seriously affecting highway traffic safety, reduce the production efficiency of highway transportation.
Track is that bituminous paving is distinctive, a kind of most commonly seen and maximum failure mode of harm, the road caused by it
Face damage ratio is up to 80%, not only seriously affects the performance and service quality on road surface, but also be easy to cause traffic accident
Generation.Domestic and foreign scholars have carried out largely from pavement structure, Material composition design, track Con trolling index etc. for many years
Theory analysis and experimental study achieve certain achievement.But with the growth, overload and heavy-duty vehicle of traffic volume of highway
Increase, the formation of canalized traffic and global warming, track problem is still current global problem.
Temperature is cold or hot and cold alternation can cause bituminous paving cracking, and the cracking caused by low temperature is known as low temperature contracting
It splits, cracking caused by high temperature is known as Thermal cracking.Cold shrinkage crack typically occurs in the area of northern cold, and Thermal cracking usually occurs
In the area that day and night temperature is larger.For Asphalt Pavement Cracking problem existing method mainly from optimization pavement structure, preferably pitch
Mixture former material and control construction quality etc. carry out prevention punishment, the passive environment coped with during bituminous paving use
Temperature change.
Under low temperature sleet and snow ice weather, bituminous paving frosting, accumulated snow, accumulated ice cause surface friction coefficient to substantially reduce,
Vehicle braking distance greatly increases, and not only influences the normal use and service life of bituminous paving, while also seriously affecting public affairs
Road traffic safety reduces highway transportation production efficiency.Therefore, in order to ensure highway traffic safety, generation traffic is avoided or reduced
Accident, it is necessary to the active adaptability for taking certain measure to improve bituminous paving to environment temperature.
Presently mainly passively carried by technical measures such as asphalt modification, addition anti-rut agent and optimization mineral aggregate gradation compositions
High bituminous paving is to the adaptability of environment temperature, however its effect is extremely limited.For bituminous paving high and low temperature disease, state
Inside and outside field of traffic researcher passively copes with the variation of ambient temperature during bituminous paving use.However, original
Passive technology can not effect a radical cure bituminous paving and the relevant various diseases of temperature.Therefore, from the temperature shape of active control bituminous paving
The exploration that new technical measures are carried out in terms of condition, dynamically to improve the temperature regime of bituminous paving, enable pavement temperature compared with
For a long time in the good reasonable temperature section of Stability of Asphalt Concrete Pavement, be of great practical significance.
Currently, being both at home and abroad addition phase-change material pair about the technical measures of Temperature Fluctuations in Asphalt Pavements are actively improved
Pitch is modified.Since asphalt is different from other construction materials such as thermal insulation mortar, cement concrete, need in high temperature
Under the conditions of mixing and roller-compaction, this proposes phase-change material used for asphalt mixture high requirement, can be applied to pitch
The phase-change material on road surface need to meet the following conditions：Excellent high temperature resistance, higher phase transformation enthalpy, suitable phase transition temperature,
It can be recycled, safety and environmental protection.Bituminous paving used in research includes with phase-change material at present：Organic solid-liquid phase change material,
SiO2Become the sizing phase-change material and epoxy resin, ethyl cellulose of material with porous material absorptions liquid organic phases such as activated carbons
Element etc. wraps up the microencapsulated phase change material of organic phase change material.Existing road main problem existing for phase-change material is mixed in pitch
During the heating mix for closing material, organic phase change material is readily volatilized and leaks, and affects the thermoregulation effect of phase-change material, simultaneously
The organic phase change material of leakage can also adversely affect the performance of pitch and asphalt.Polyurethane phase-change material is
Solid-solid phase transition material compares organic solid-liquid phase change material and other kinds of solid-solid phase transition material, has in phase transition process
Middle no liquid or gas generate, and volume change is small, are encapsulated without container during use, and service life is long, heat resisting temperature height, phase
The advantages such as temperature is adjustable.
Invention content
It is an object of the invention to the problems in for the above-mentioned prior art, provide a kind of compound solid-solid of polyurethane/carbon black
Phase change material modified asphalt and preparation method thereof, the phase change material modified Asphalt Mixture Performance is excellent, temperature adjustment
Effect is apparent, and preparation method is easy to operate, of low cost and low for equipment requirements, has the characteristics that environmental-friendly.
To achieve the goals above, polyurethane of the invention/carbon black composite solid-solid phase-change modified asphalt mixture is pressed
Mass fraction meter, including 4~6 parts of pitch, gather materials 100 parts, polyurethane/1~20 part of carbon black composite solid-solid phase-change, miberal powder 1
~5 parts；The synthesis material of the polyurethane/carbon black composite solid-solid phase-change includes soft segment, hard section, expands row agent and charcoal
It is black.Soft segment using polyethylene glycol, polytetrafluoro hydrogen mutter glycol, poly- (1,3- cyclic heptane dioxides) glycol, polypropylene oxide glycol, gather oneself
In diacid ethylene glycol propylene glycol ester, pla-pcl glycol, polycarbonate glycol, isophorone diisocyanate any one or
A variety of compositions；Hard section is using the group of any one or more in 4,4 '-'-diphenylmethane diisocyanates, 1,4- butanediols
Close object；Expand row agent using two adjacent chlorodiphenyl amine methane, pentaerythrite, ethanol amine, diethanol amine, triethanolamine, triisopropanolamine
And bis- (2- hydroxypropyls) aniline of N, N'-, neopentyl glycol, trimethylolpropane, ethylene glycol, propylene glycol, 1,4-butanediol, a contracting two
Ethylene glycol, glycerine, trimethylolpropane, Isosorbide-5-Nitrae-cyclohexanediol, A Hydrogenated Bisphenol A, dimethylenebenzene glycol, hydroquinone be double-
Beta-hydroxyethyl ether, resorcinol hydroxy ether, methyl diethanolamine, diethyl toluene diamine, 3,5- dimethythiotoluene diamines, α-
The composition of any one or more in allylin, glycidol allyl ether, cumyl peroxide, sulphur.
The molecular weight of polyethylene glycol be 1000~20000, polytetrafluoro hydrogen mutter glycol molecular weight be 600~4000, poly- ammonia
Type, content and the molecular-weight adjusting phase transition temperature and phase that ester/carbon black composite solid-solid phase-change passes through change soft segment and hard section
Become enthalpy.
The structure type of the polyurethane/carbon black composite solid-solid phase-change is the graininess of 0.05mm~4.75mm,
Or the filiform that a diameter of 0.2mm~2mm, length are 5mm~30mm.
The pitch uses the composition of any one or more in bi tumenf orr oad, coal tar pitch or rock asphalt.
The carbon black is acetylene carbon black, and grain size is 25nm~100nm.
The preparation method of polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture, including following step
Suddenly：
1) 4~6 parts of pitch according to the mass fraction, is taken, is gathered materials 100 parts, polyurethane/carbon black composite solid-solid phase-change 1~
20 parts, 1~5 part of miberal powder；2) it will gather materials and polyurethane/carbon black composite solid-solid phase-change mix at 140 DEG C~180 DEG C, obtain
To mix mixture a；3) by the mix mixture a obtained by pitch and step 2) at 140 DEG C~180 DEG C mix, obtain mix
Mixture b；4) by the mix mixture b obtained by miberal powder and step 3) at 140 DEG C~180 DEG C mix, be cooled to room temperature, obtain
Polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture.
Duration of mixing is 30s~90s；Pitch is first heated to 140 DEG C~180 DEG C by the step 3) before mix,
Miberal powder is first heated to 140 DEG C~180 DEG C by the step 4) before mix.
The preparation method of the polyurethane/carbon black composite solid-solid phase-change is：1) by the soft segment after vacuum drying treatment
With hard section in 75 DEG C~85 DEG C, nitrogen atmosphere prepolymerization reaction 50min~60min, obtain performed polymer；2) according to isocyano
Expansion row agent is added in performed polymer and carries out expanding row recombination reaction with carbon black for content, and reaction condition is identical as step 1), the reaction time
For 30min~40min, polyurethane/carbon black composite material is obtained；3) by polyurethane/carbon black composite material at 95 DEG C~105 DEG C
Vulcanizing treatment is carried out under vacuum drying environment, the time of processing is for 24 hours~48h, obtains the compound solid-solid phase-change of polyurethane/carbon black
Material.
Compared with prior art, polyurethane of the invention/carbon black composite solid-solid phase-change modified asphalt mixture gathers
Urethane realizes the storage and release of energy using crystallization-melting variation of soft segment, and polyurethane is from crystalline state to amorphous state phase
It needs to absorb heat when transformation, and from amorphous state to crystalline transformation when needs to discharge heat.Before and after phase transition temperature and
During high temperature mixes and stirs, polyurethane/carbon black composite solid-solid phase-change is in still solid-state, which is added
To the problem of using in asphalt, there is no leakage and volatilize, environment will not be polluted.Carbon black is in each component
It plays reinforcement, increase thermal conductivity and coloration.Pitch is modified using polyurethane/carbon black composite solid-solid phase-change, is obtained
The self-temperature-adjusting phase change asphalt thermoregulatory effect arrived is apparent, in temperature-fall period, reduces asphalt rate of temperature fall, greatly
Big delay low temperature time of occurrence, improves the ability that bituminous paving resists cold cracking.It is 0 to choose exothermic phase phase transition temperature peak value
DEG C ± 1 DEG C of polyurethane/carbon black composite solid-solid phase-change can act on release heat at 0 DEG C, reduce road surface and coagulate ice frosting.
In temperature-rise period, reduce asphalt heating rate, lag heating time of occurrence improves bituminous paving high-temperature stability
Energy.Polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture items excellent road performance, can meet drip
Green pavement construction technical specification requirements.
Compared with prior art, the preparation of polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture
Simple process and low cost is honest and clean, does not need special equipment, environmental-friendly, is suitble to large-scale industrial production.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
Polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture, by pitch, gather materials, polyurethane/
Carbon black composite solid-solid phase-change, miberal powder are made.According to the mass fraction, including 4.8 parts of pitch, gather materials 100 parts, polyurethane/charcoal
8 parts of black composite solid-solid phase-change, 3 parts of miberal powder.Wherein, pitch uses 90# bi tumenf orr oads, gathers materials for diabase rubble
By weight ratio 2:1 coarse fodder and fines composition, miberal powder are made by limestone；Polyurethane/carbon black composite solid-solid phase-change is by gathering
Ethylene glycol (molecular weight 6000), 4,4 '-'-diphenylmethane diisocyanates, two adjacent chlorodiphenyl amine methane are reacted by prepolymer method
It is made；The suction heat release phase transition temperature of polyurethane/carbon black composite solid-solid phase-change is respectively 55.4 DEG C, 15.2 DEG C, and polyurethane/
The suction heat release enthalpy of carbon black composite solid-solid phase-change is respectively 117.7J/g, 111.9J/g, the compound solid-solid of polyurethane/carbon black
Phase-change material chooses the granular material that granularity is 0.6mm~2.36mm.
The preparation method of polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture includes：First will
Gather materials and polyurethane/carbon black composite solid-solid phase-change is blended in mix 30s~90s at 140 DEG C~180 DEG C, obtains mixing and stirring mixed
Object a is closed, aforementioned mix and stir after mixture at 140 DEG C~180 DEG C is added in next 90# road asphalt that will warm up 140 DEG C~180 DEG C
Lower stirring 30s~90s, obtains mixing and stirring mixture b, will warm up 140 DEG C~180 DEG C of miberal powder addition and mixes and stirs mixture b,
30s~90s is stirred at 140 DEG C~180 DEG C, is cooled to room temperature, and is obtained polyurethane/carbon black composite solid-solid phase-change and is modified drip
Green mixture.
Polyurethane obtained/carbon black composite solid-solid phase-change modified asphalt mixture thermoregulatory effect is apparent.Cooling down
Cheng Zhong reduces asphalt rate of temperature fall, postpones low temperature time of occurrence significantly, improves the energy that bituminous paving resists cold cracking
Power.In temperature-rise period, asphalt heating rate can be reduced, it is steady to improve bituminous paving high temperature for lag heating time of occurrence
Qualitative energy.
Embodiment 2
The present embodiment difference from example 1 is that：Polyurethane/carbon black composite solid-solid phase-change is by polytetrafluoro
Mutter glycol (molecular weight 2900), 4,4 '-'-diphenylmethane diisocyanates, two adjacent chlorodiphenyl amine methane of hydrogen are anti-by prepolymer method
It should be made；Phase-change material inhale heat release phase transition temperature be respectively 36.7 DEG C, -9.4 DEG C, inhale heat release enthalpy be respectively 62.8/g,
63.6J/g。
The preparation method of the polyurethane of the present embodiment/carbon black composite solid-solid phase-change modified asphalt mixture and implementation
Example 1 is identical.
Embodiment 3
The present embodiment difference from example 1 is that：Polyurethane/carbon black composite solid-solid phase-change is by poly- second two
Alcohol (molecular weight 4000), 4,4 '-'-diphenylmethane diisocyanates, two adjacent chlorodiphenyl amine methane are reacted by prepolymer method and are made
?；It is respectively 48.6 DEG C, 9.5 DEG C that phase-change material, which inhales heat release phase transition temperature, and it is respectively 98.7/g, 99.2J/g to inhale heat release enthalpy.
The preparation method of the polyurethane of the present embodiment/carbon black composite solid-solid phase-change modified asphalt mixture and implementation
Example 1 is identical.
Embodiment 4
The present embodiment difference from example 1 is that：Polyurethane/carbon black composite solid-solid phase-change is by poly- second two
Alcohol (molecular weight 4000), polytetrafluoro hydrogen are muttered glycol 2900,4,4 '-'-diphenylmethane diisocyanates, two adjacent chlorodiphenyl amine methane
It is made by prepolymer method reaction；It is respectively 46.6 DEG C, 0.4 DEG C that phase-change material, which inhales heat release phase transition temperature, inhales heat release enthalpy and is
69.5/g、70.2J/g。
The preparation method of the present embodiment polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture and embodiment 1
It is identical.
Embodiment 5
The present embodiment difference from example 1 is that：Polyurethane/carbon black composite solid-solid phase-change chooses diameter
The polyurethane filament for being 15mm~20mm for 1.5mm~2mm, length.
The preparation method of the polyurethane of the present embodiment/carbon black composite solid-solid phase-change modified asphalt mixture and implementation
Example 1 is identical.
Contrast test
It is compound that the identical polyurethane/carbon black of size, specification is prepared respectively according to the method for 1-5 of the embodiment of the present invention
Solid-solid phase transition material modified asphalt mixture test specimen, each test specimen is distinguished with each embodiment mixture, compiles be denoted as sample 1, sample respectively
Product 2, sample 3, sample 4, sample 5, the method according to the invention prepares sample 6, and difference lies in samples with sample 1-5 for sample 6
Without addition polyurethane/carbon black composite solid-solid phase-change in product 6, other components are identical.
Pavement performance test, test data such as table 1 are carried out to the above sample respectively：
1 Asphalt Mixture test result of table
| Sample number into spectrum | Dynamic stability (secondary/mm) | Flexural-tensile strain (μ ε) | Residual stability (%) |
| 1 | 2523 | 2427 | 85.44 |
| 2 | 2126 | 2413 | 85.67 |
| 3 | 2236 | 2269 | 86.23 |
| 4 | 2359 | 2336 | 85.33 |
| 5 | 2982 | 2526 | 89.23 |
| 6 | 2027 | 2430 | 84.04 |
| Normal value | ≥1000 | ≥2000 | ≥80 |
Outdoor simulating temperature adjustment is carried out under the same conditions to sample 1, sample 2, sample 3, sample 4,6 marshal piece of sample
Experiment, test data selection date are on May 11st, 2018, concrete outcome such as table 2：
2 outdoor simulating temperature adjustment test statistics result of table
As can be seen from Table 1, polyurethane of the invention/carbon black composite solid-solid phase-change modified asphalt mixture is compared
It increases in plain asphalt Asphalt Mixture, meets Asphalt Mixture requirement.
As can be seen from Table 2, the temperature adjustment of polyurethane of the present invention/carbon black composite solid-solid phase-change modified asphalt mixture
Effect is apparent, in temperature-rise period, can significantly reduce test specimen temperature peak, and the time for delaying the highest temperature to occur improves pitch
Road surface high temperature stability performance.Since experiment season is summer, environment temperature is higher, and only sample 1 reaches low temperature phase change temperature, is dropping
During temperature, test specimen minimum temperature is increased, has delayed lowest temperature time of occurrence.
The above is only the section Example of the present invention, not does limitation in any form to the present invention, other
It is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications, should be equivalent
Substitute mode is included within the scope of the present invention.
Claims (9)
1. a kind of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture, it is characterised in that：According to the mass fraction,
Including 4~6 parts of pitch, gather materials 100 parts, polyurethane/1~20 part of carbon black composite solid-solid phase-change, 1~5 part of miberal powder；
The synthesis material of the polyurethane/carbon black composite solid-solid phase-change includes soft segment, hard section, expands row agent and carbon black.
2. polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 1, it is characterised in that：
Soft segment using polyethylene glycol, polytetrafluoro hydrogen mutter glycol, poly- (1,3- cyclic heptane dioxides) glycol, polypropylene oxide glycol, gather oneself two
In sour ethylene glycol propylene glycol ester, pla-pcl glycol, polycarbonate glycol, isophorone diisocyanate any one or it is more
The composition of kind；Hard section is using the combination of any one or more in 4,4 '-'-diphenylmethane diisocyanates, 1,4- butanediols
Object；Expand row agent using two adjacent chlorodiphenyl amine methane, pentaerythrite, ethanol amine, diethanol amine, triethanolamine, triisopropanolamine and
Bis- (2- hydroxypropyls) aniline of N, N'-, neopentyl glycol, trimethylolpropane, ethylene glycol, propylene glycol, 1,4-butanediol, a contracting diethyl
Double-the β-of glycol, glycerine, trimethylolpropane, Isosorbide-5-Nitrae-cyclohexanediol, A Hydrogenated Bisphenol A, dimethylenebenzene glycol, hydroquinone
Hydroxyethyl ether, resorcinol hydroxy ether, methyl diethanolamine, diethyl toluene diamine, 3,5- dimethythiotoluene diamines, α-are sweet
The composition of any one or more in oily allyl ether, glycidol allyl ether, cumyl peroxide, sulphur.
3. polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 2, it is characterised in that：
The molecular weight of the polyethylene glycol be 1000~20000, polytetrafluoro hydrogen mutter glycol molecular weight be 600~4000, polyurethane/charcoal
Type, content and the molecular-weight adjusting phase transition temperature and enthalpy of phase change that black composite solid-solid phase-change passes through change soft segment and hard section
Value.
4. polyurethane according to claim 1 or claim 2/carbon black composite solid-solid phase-change modified asphalt mixture, feature exist
In：The structure type of the polyurethane/carbon black composite solid-solid phase-change is the graininess of 0.05mm~4.75mm, or
A diameter of 0.2mm~2mm, the filiform that length is 5mm~30mm.
5. polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 1, it is characterised in that：
The pitch uses the composition of any one or more in bi tumenf orr oad, coal tar pitch or rock asphalt.
6. polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 1, it is characterised in that：
The carbon black is acetylene carbon black, and grain size is 25nm~100nm.
7. a kind of preparation method of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture, which is characterized in that packet
Include following steps：1) 4~6 parts of pitch according to the mass fraction, is taken, is gathered materials 100 parts, polyurethane/carbon black composite solid-solid phase-change
1~20 part, 1~5 part of miberal powder；2) it will gather materials and be mixed at 140 DEG C~180 DEG C with polyurethane/carbon black composite solid-solid phase-change
It closes, obtains mix mixture a；3) by the mix mixture a obtained by pitch and step 2) at 140 DEG C~180 DEG C mix, obtain
Mix mixture b；4) by the mix mixture b obtained by miberal powder and step 3) at 140 DEG C~180 DEG C mix, be cooled to room temperature,
Obtain polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture.
8. the preparation method of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 7,
It is characterized in that：Duration of mixing is 30s~90s；Pitch is first heated to 140 DEG C~180 by the step 3) before mix
DEG C, miberal powder is first heated to 140 DEG C~180 DEG C by the step 4) before mix.
9. the preparation method of polyurethane/carbon black composite solid-solid phase-change modified asphalt mixture according to claim 7,
It is characterized in that, the preparation method of the polyurethane/carbon black composite solid-solid phase-change is：It 1) will be after vacuum drying treatment
Soft segment and hard section prepolymerization reaction 50min~60min in 75 DEG C~85 DEG C, nitrogen atmosphere, obtain performed polymer；2) according to isocyanic acid
Expansion row agent is added in performed polymer and carries out expanding row recombination reaction with carbon black for the content of root, and reaction condition is identical as step 1), reaction
Time is 30min~40min, obtains polyurethane/carbon black composite material；3) by polyurethane/carbon black composite material 95 DEG C~105
DEG C vacuum drying environment under carry out vulcanizing treatment, the time of processing is for 24 hours~48h, obtains the compound solid-solid of polyurethane/carbon black
Phase-change material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762130A (en) * | 2019-01-21 | 2019-05-17 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind can be recycled defervescence plaster used |
| CN115196912A (en) * | 2022-07-25 | 2022-10-18 | 湖北工业大学 | Novel thermal insulation mortar and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130302574A1 (en) * | 2005-02-11 | 2013-11-14 | Invista North America S.A R.I. | Solvent free aqueous polyurethane dispersions and shaped articles therefrom |
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| CN105885440A (en) * | 2015-01-15 | 2016-08-24 | 樊现孔 | Preparation method for hyperbranched polyurethane-modified asphalt with temperature sensibility controllable |
| CN107163547A (en) * | 2017-05-17 | 2017-09-15 | 北京大学 | A kind of solid-solid phase change thermal interfacial material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109762130A (en) * | 2019-01-21 | 2019-05-17 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind can be recycled defervescence plaster used |
| CN109762130B (en) * | 2019-01-21 | 2021-02-12 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Recyclable fever cooling patch |
| CN115196912A (en) * | 2022-07-25 | 2022-10-18 | 湖北工业大学 | Novel thermal insulation mortar and preparation method thereof |
| CN115196912B (en) * | 2022-07-25 | 2023-03-31 | 湖北工业大学 | Novel thermal insulation mortar and preparation method thereof |
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