CN108395182A - A kind of compound heat accumulation temperature control ecology base material and preparation method thereof - Google Patents
A kind of compound heat accumulation temperature control ecology base material and preparation method thereof Download PDFInfo
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- CN108395182A CN108395182A CN201810482330.7A CN201810482330A CN108395182A CN 108395182 A CN108395182 A CN 108395182A CN 201810482330 A CN201810482330 A CN 201810482330A CN 108395182 A CN108395182 A CN 108395182A
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- heat accumulation
- temperature control
- base material
- soil
- compound heat
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to slope project fields, and in particular to a kind of compound heat accumulation temperature control ecology base material and preparation method thereof, heat accumulation carrier is made using the high latent heat property of PEG in the present invention（PEG powder and epoxy resin composition）, further with riverway sludge soil, curing agent（Cement）, soil conditioner（PAM）It is mixed in a certain ratio with water, agitated, compacting forms required phase-change material.Phase-change material in the present invention is while ensureing that compound soil strength meets protecting slope ecology requirement, have both the characteristics such as heat accumulation, temperature control, adjustable soil and ambient temperature, prevent Plant death under hot environment, are a kind of environmentally protective, economic and practical Novel slope protection composite base materials.
Description
Technical field
The present invention relates to slope project fields, and in particular to a kind of compound heat accumulation temperature control ecology base material and preparation method thereof,
Compound heat accumulation temperature control ecology base material extensive use in protecting slope ecology.
Background technology
By the way that (injection or be laid with) ecological protection base material is arranged in side slope, slope soil or rock mass can be effectively overcome
The deficiencies of fertility is insufficient, poor water retention property provides clay fertilizer layer for slope-protecting plant growth.The prior art is by mixing the soil body and depot fertilizer
Cooperation is base material, and for base material due to dead weight and cost limitation, slope surface laying depth is generally less than 10cm, since base material thickness is relatively thin,
Its temperature is affected by environment larger, and under summer afternoon high temperature and the cryogenic conditions in morning in winter, plant is easy death.Plant
Cauline leaf is withered after death, root system strength reduction, causes to increase slope surface and rainwash speed, weakens the bank protections such as water and soil conservation effect
Fruit reduces safety factor of slope.
It is special using the phase-change thermal storage of phase-change material it is therefore desirable to develop a kind of slope ecological base material with new function
Property, slope soil slope surface temperature is actively adjusted, can effectively shorten high temperature action time of slope surface in high temperature season, reduces Slope
Face and plant surface temperature actively mitigate side slope high temperature disease, to protect slope-protecting plant；Extend the slope protection service life, subtract
The maintenance cost of few side slope improves safety；It can also reduce the harmful substance and big calorimetric that slope surface is distributed to road environment simultaneously
Amount slows down road surface aging speed, improves pavement asphalt materials ' durability.
Invention content
It is negatively affected by megathermal climate condition for Ecological Slope, applicant is based on phase-change thermal storage theory, and use is compound
Technology prepares a kind of compound temperature control ecology base material having phase-change thermal storage function.Compound temperature control ecology base material prepared by the present invention exists
Ensure that its soil body self-strength meets protecting slope ecology simultaneously, have both the functions such as heat accumulation, temperature control, there is prevention high temperature hostile ring
Slope-protecting plant is exposed to the sun lethal effect under border.
To achieve the goals above, the present invention uses following technical proposals：
A kind of the step of compound heat accumulation temperature control ecology base material, preparation method, is as follows：
(1) polyethylene glycol is scattered in epoxide-resin glue, is stirred evenly, obtain mixed solution；
(2) mixed solution that step (1) obtains is stirred under 50 DEG C of -70 DEG C of water-baths, until its gelling is complete, is obtained compound
Gelinite；
(3) plural gel body in step (2) is aged 8h~12h at room temperature, places into drying in baking oven, is cooled to room
Wen Hou is ground into polyethylene glycol powder；
(4) curing agent is added in dry feedstock soil, is uniformly mixed, adds water, stir evenly for the first time；Add successively again
Enter polyethylene glycol powder prepared by carbon fiber, soil conditioner and step (3), stirs evenly for the second time, obtain compound heat accumulation control
Warm ecology base material；
Dry feedstock soil, curing agent, water, carbon fiber, soil conditioner and the polyethylene glycol powder being added in the step (4)
The mass ratio at end is 1:(0.05-0.15):(0.6-0.75):(0.01-0.05):(0.005-0.01):(0.01-0.05), it is excellent
It is selected as 1:0.15:0.7:(0.01-0.03):0.01:(0.03-0.05), most preferably 1:0.15:0.7:0.01:0.01:
0.05。
Further, polyethylene glycol is PEG2000 in the step (1), and addition is epoxide-resin glue quality
30%~80%, preferably 50%~60%, the epoxide-resin glue are high heat conduction type epoxide-resin glue, preferably
Hasuncast 6213FR type high-thermal-conductivity epoxy resin glue.
Further, the curing agent in the step (4) is 42.5 grades of Portland cements.
Further, the raw material soil in the step (4) is cohesive soil or silty clay rich in organic matter, preferably river
Road muck soil, bank protection deposit or pond sludge etc..
Further, the carbon fiber in the step (4) is 6mm grades of chopped carbon fibers.
Further, the soil conditioner in the step (4) is the anion-polyacrylamide of 8,000,000 molecular weight.
Further, stir speed (S.S.) is 110r/min~125r/ during being stirred evenly for the first time described in step (4)
min。
Further, stir speed (S.S.) is 50r/min~70r/min during being stirred evenly for the second time described in step (4),
The time of stirring is 10min~15min.
Compared with prior art, the invention has the advantages that and advantageous effect：
It is an object of the invention to invent a kind of NEW TYPE OF COMPOSITE heat accumulation temperature control ecology base material, the high latent heat property of PEG is utilized
Heat accumulation carrier (PEG powder and epoxy resin composition) is made, further with riverway sludge soil, same to curing agent (cement), soil
Earth modifying agent (PAM) and water are mixed in a certain ratio, agitated, be compacted.The present invention not only meets the intensity of ecological protection
Demand has both the functions such as heat accumulation, temperature control, prevents slope-protecting plant death under high-temperature severe environment, is a kind of environmentally protective, economical suitable
Advanced composite material (ACM).
PEG2000 phase transition temperatures range of choice is wide in raw material of the present invention, latent heat of phase change is high, enthalpy of phase change heat stagnation aftereffect is low,
Without supercooling, phenomenon of phase separation, and nontoxic, non-stimulated, non-volatility, chemical property is stablized, and good thermal stability is widely used in
The various fields such as Solar use, building energy conservation, weaving；High heat conduction type epoxy gluing structure stabilization, large specific surface area, absorption
Performance is good, thermal coefficient is high, cheap, is not chemically reacted when being mixed with polyethylene glycol 2000, and with good
Shape function, make polyethylene glycol 2000 before phase change after be in solid-state, No leakage；Not plus the easy loose crushing of the soil body of fiber, intensity
Suddenly it loses, after adding fiber, peak strength, residual strength, toughness, globality and the brittle break mould of base material can be improved
Formula prevents the soil body from destroying suddenly, and chopped carbon fiber is added in the soil body, not only has the above effect, but also increase in the soil body
Rate of heat transfer reduces thermal loss, effectively reduces temperature；PAM can increase the cohesive force between soil skin granulate, wherein PAM
For Flokal B since its viscosity is big, price is low, and Water-saving effect is good, for strong to improving flexural strength, bonding in concrete
Degree, bent toughness and wear resistence have remarkable effect, and can reduce backfin ratio, permeability and shrinkage.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with specific embodiments.It should be understood that institute
The purpose of act case study on implementation is the content that the present invention is further explained, and cannot be construed to protect the present invention in any sense
Protect the limitation of range：
A kind of compound heat accumulation temperature control ecology base material of embodiment 1, is prepared by following methods：
At ambient temperature, polyethylene glycol PEG2000 and Hasuncast6213FR type high-thermal-conductivity epoxy resin glue are pressed 1:
2 mass ratio mixing, the mixed liquor of polyethylene glycol and epoxide-resin glue is sufficiently stirred with electric blender, until polyethylene glycol piece
Shape or it is powdered completely disappear, so that polyethylene glycol is dispersed in epoxide-resin glue；Then mixed liquor is placed in heating water bath
Under the conditions of stir, adjust bath temperature be 60 DEG C, be stirred continuously, until mixed liquor complete gelation obtains plural gel body；It will be compound
Gelinite is aged 12h at room temperature, places into forced air drying 15h in 80 DEG C of baking ovens, after being cooled to room temperature, mills to get PEG powder
End.
It takes the Wuhan rivers Xun Si riverway sludge as raw material soil, is dried through oven, after crossing 1mm sieves, take 150g native as sample, to
22.5g curing agent (42.5 grades of Portland cements) is wherein added, is uniformly mixed；105g water is added thereto again, then
It is stirred evenly with the rate of 125r/min in blender, it is in soft modeling-liquid-plastic state to make the soil body rapidly, obtains mixture；By one
Fixed volume, which is matched, sequentially adds carbon fiber, soil conditioner and PEG powder into mixture；Wherein, carbon fiber is using Japan
Eastern nation 6mm grades of chopped carbon fibers, volume 4.5g, soil conditioner use 800 weight anion-type PAM very much, volume
For 1.5g, PEG powder is that the present embodiment abovementioned steps are made, volume 4.5g；By the above mixture with the rate of 60r/min
Stirring 10min forms compound heat accumulation temperature control ecology base material.
Then, it by 3 layers of the compound heat accumulation temperature control ecology base material of preparation point, is hit with every layer 25 to hit reality and be packed into sample preparation device
In (a diameter of 39.1mm is highly 80.0mm)；The sample made is put into togerther together with sample preparation device in standard curing box and is conserved,
Curing temperature is (20 ± 2) DEG C, and relative humidity is more than 95%, and demoulding continues to conserve afterwards for 24 hours for maintenance；It conserves to design age 28d
Afterwards, the about 70g that weighs is taken out, unconfined compression strength test is carried out, it is 530kPa to measure sample soil strength, and intensity meets life
State consolidates slope design requirement.
By the compound heat accumulation temperature control ecology base material made and the raw material soil without any processing be respectively prepared specification 20cm ×
The test specimen of 20cm × 3cm is placed in temperature simulation chamber, carries out temperature simulation experiment.Temperature simulation is tested in August, 2017
Air themperature (maximum temperature is up to 43.4 DEG C) was used as simulated object at 30cm from the ground on 5th.It is tested through synthesis thermal analyzer, it is compound
Heat accumulation temperature control ecology substrate surface temperature starts phase transformation and carries out heat accumulation when being 44.7 DEG C, temperature change starts to delay, at 63.5 DEG C
Reach peak value, latent heat of phase change 103.1J/g, and the raw material soil surface peak temperature without any processing is 66.7 DEG C at this time, it is compound
Heat accumulation temperature control ecology base material surface peak temperature falls 3.2 DEG C on a year-on-year basis.
To carry out acceleration thermal cycling test, one day temperature cycles time for 24 hours was compressed to 4h, it is real by 30 cycles
It tests, compound heat accumulation temperature control ecology base material surface peak temperature is 63.2 DEG C, and the raw material soil surface peak temperature of no any processing is
66.5 DEG C, compound heat accumulation temperature control ecology base material surface peak temperature falls 3.3 DEG C on a year-on-year basis.By 60 cyclic tests, compound storage
The ecological base material surface peak temperature of thermal control temperature is 63.4 DEG C, and the raw material soil surface peak temperature of no any processing is 66.6 DEG C, multiple
It closes heat accumulation temperature control ecology base material surface peak temperature and falls 3.2 DEG C, 30 times and 60 circulation experiments, compound heat accumulation temperature control life on a year-on-year basis
State substrate surface peak temperature is all lower than the raw material soil surface peak temperature without any processing, and reduction numerical value twice only differs
0.1 DEG C, for temperature reduction performance without apparent decaying, cooling-down effect is good.43.4 DEG C of height are all up to due to each thermal cycling simulation
Warm environment, general summer hot area continuous high temperature time about 20d~30d, 60 lasting thermal cycles are equivalent to 2 years~3 years
High temperature action, it was demonstrated that the compound heat accumulation temperature control ecology base material has good application feasibility.
Take the experiment block of 10cm × 10cm × 10cm in certain side slope, is used in combination partition board to be separated with surrounding, according to the present embodiment
Proportioning and method prepare the compound heat accumulation temperature control ecology base material of respective volume and be packed into test block, and be sown into side slope protection
The seed of plant-Bermuda grass, application rate are 400/block (10.00g/m2), starting to sprout by 8d, 14d or so sprouts completely,
It is 280/block through measuring Bermuda grass budding amount, it was demonstrated that slope-protecting plant can normally give birth on the compound heat accumulation temperature control ecology base material
It is long.
A kind of compound heat accumulation temperature control ecology base material of embodiment 2, is prepared by following methods：
At ambient temperature, polyethylene glycol PEG2000 and Hasuncast6213FR type high-thermal-conductivity epoxy resin glue are pressed 3:
5 mass ratio mixing, the mixed liquor of polyethylene glycol and epoxide-resin glue is sufficiently stirred with electric blender, until polyethylene glycol piece
Shape or it is powdered completely disappear, so that polyethylene glycol is dispersed in epoxide-resin glue；Then mixed liquor is placed in heating water bath
Under the conditions of stir, adjust bath temperature be 60 DEG C, be stirred continuously, until mixed liquor complete gelation obtains plural gel body；It will be compound
Gelinite is aged 12h at room temperature, places into forced air drying 15h in 80 DEG C of baking ovens, after being cooled to room temperature, mills to get PEG powder
End.
It takes the Wuhan rivers Xun Si riverway sludge as raw material soil, is dried through oven, after crossing 1mm sieves, take 150g native as sample, to
Wherein be added 7.5g curing agent (42.5 grades of Portland cements), be uniformly mixed, then thereto be added 105g water, then in
It is stirred evenly with the rate of 125r/min in blender, it is in soft modeling-liquid-plastic state to make the soil body rapidly, obtains mixture；By certain
Volume match and sequentially add carbon fiber, soil conditioner and PEG powder into mixture；Wherein, carbon fiber is using Japan east
Nation 6mm grades of chopped carbon fiber, volume 1.5g；Soil conditioner uses 800 weight anion-type PAM very much, and volume is
1.5g；PEG powder is that the present embodiment abovementioned steps are made, and volume 7.5g stirs the above mixture with the rate of 60r/min
It mixes 10min and forms compound heat accumulation temperature control ecology base material.
Then, it by 3 layers of the compound heat accumulation temperature control ecology base material of preparation point, is hit with every layer 25 to hit reality and be packed into sample preparation device
In (a diameter of 39.1mm is highly 80.0mm)；The sample made is put into togerther together with sample preparation device in standard curing box and is conserved,
Curing temperature is (20 ± 2) DEG C, and relative humidity is more than 95%, and demoulding continues to conserve afterwards for 24 hours for maintenance；It conserves to design age 28d
Afterwards, the about 71g that weighs is taken out, unconfined compression strength test is carried out, it is 430kPa to measure sample soil strength, and intensity meets life
State consolidates slope design requirement.
By the compound heat accumulation temperature control ecology base material made and the raw material soil without any processing be respectively prepared specification 20cm ×
The test specimen of 20cm × 3cm is placed in temperature simulation chamber, carries out temperature simulation experiment.Temperature simulation is tested in August, 2017
Air themperature (maximum temperature is up to 43.4 DEG C) was used as simulated object at 30cm from the ground on 5th.It is tested through synthesis thermal analyzer, it is compound
Heat accumulation temperature control ecology substrate surface temperature starts phase transformation and carries out heat accumulation when being 44.1 DEG C, temperature change starts to delay, at 60.5 DEG C
Reach peak value, latent heat of phase change 108.1J/g, and the raw material soil surface peak temperature without any processing is 66.7 DEG C at this time, it is compound
Heat accumulation temperature control ecology base material surface peak temperature falls 6.2 DEG C on a year-on-year basis.
To carry out acceleration thermal cycling test, one day temperature cycles time for 24 hours was compressed to 4h, it is real by 30 cycles
It tests, compound heat accumulation temperature control ecology base material surface peak temperature is 60.2 DEG C, and the raw material soil surface peak temperature of no any processing is
66.5 DEG C, compound heat accumulation temperature control ecology base material surface peak temperature falls 6.3 DEG C on a year-on-year basis.By 60 cyclic tests, compound storage
The ecological base material surface peak temperature of thermal control temperature is 60.4 DEG C, and the raw material soil surface peak temperature of no any processing is 66.6 DEG C, multiple
It closes heat accumulation temperature control ecology base material surface peak temperature and falls 6.2 DEG C, 30 times and 60 circulation experiments, compound heat accumulation temperature control life on a year-on-year basis
State substrate surface peak temperature is all lower than the raw material soil surface peak temperature without any processing, and reduction numerical value twice only differs
0.1 DEG C, for temperature reduction performance without apparent decaying, cooling-down effect is good.43.4 DEG C of height are all up to due to each thermal cycling simulation
Warm environment, general summer hot area continuous high temperature time about 20d~30d, 60 lasting thermal cycles are equivalent to 2 years~3 years
High temperature action, it was demonstrated that the compound heat accumulation temperature control ecology base material has good application feasibility.
Take the experiment block of 10cm × 10cm × 10cm in certain side slope, is used in combination partition board to be separated with surrounding, according to the present embodiment
Proportioning and method prepare the compound heat accumulation temperature control ecology base material of respective volume and be packed into test block, and be sown into side slope protection
The seed of plant-Bermuda grass, application rate are 400/block (10.00g/m2), starting to sprout by 7d, 15d or so completes budding,
It is 340/block through measuring Bermuda grass budding amount, it was demonstrated that slope-protecting plant can normally give birth on the compound heat accumulation temperature control ecology base material
It is long.
Claims (8)
1. a kind of compound heat accumulation temperature control ecology base material, which is characterized in that be prepared by following methods：
（1）Polyethylene glycol is scattered in epoxide-resin glue, is stirred evenly, mixed solution is obtained；
（2）By step（1）Obtained mixed solution stirs under 50 DEG C ~ 70 DEG C water-baths, until its gelling is complete, obtains plural gel
Body；
（3）By step（2）Middle plural gel body room temperature is aged 8h ~ 12h, places into drying in baking oven, after being cooled to room temperature, grinding
At polyethylene glycol powder；
（4）Curing agent is added in dry feedstock soil, is uniformly mixed, adds water, stir evenly for the first time；Sequentially add carbon
Fiber, soil conditioner and step（3）The polyethylene glycol powder of preparation, stirs evenly for the second time, obtains compound heat accumulation temperature control life
State base material；
The step（4）The dry feedstock soil of middle addition, curing agent, water, carbon fiber, soil conditioner and polyethylene glycol powder
Mass ratio is 1:（0.05-0.15）:（0.6-0.75）:（0.01-0.05）:（0.005-0.01）:（0.01-0.05）.
2. compound heat accumulation temperature control ecology base material according to claim 1, which is characterized in that the step（1）In poly- second two
Alcohol is PEG2000, and addition is the 30% ~ 80% of epoxide-resin glue quality, and the epoxide-resin glue is high heat conduction type asphalt mixtures modified by epoxy resin
Fat glue.
3. compound heat accumulation temperature control ecology base material according to claim 2, which is characterized in that the step（4）In solidification
Agent is 42.5 grades of Portland cements.
4. compound heat accumulation temperature control ecology base material according to claim 1, which is characterized in that the step（4）In raw material
Soil is cohesive soil or silty clay rich in organic matter.
5. compound heat accumulation temperature control ecology base material according to claim 1, which is characterized in that the step（4）In carbon fiber
Dimension is 6mm grades of chopped carbon fibers.
6. compound heat accumulation temperature control ecology base material according to claim 1, which is characterized in that the step（4）In soil
Modifying agent is the anion-polyacrylamide of 8,000,000 molecular weight.
7. compound heat accumulation temperature control ecology base material according to claim 1, which is characterized in that step（4）Described in for the first time
Stir speed (S.S.) is 110 ~ 125r/min during stirring evenly.
8. preparation method according to claim 1, which is characterized in that step（4）Described in stir evenly process for the second time
Middle stir speed (S.S.) is 50 ~ 70r/min, and the time of stirring is 10 ~ 15min.
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| CN201810482330.7A CN108395182B (en) | 2018-05-18 | 2018-05-18 | Composite heat-storage temperature-control ecological base material and preparation method thereof |
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Cited By (1)
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|---|---|---|---|---|
| CN110669317A (en) * | 2019-11-27 | 2020-01-10 | 福建师范大学 | Preparation method of ternary epoxy resin heat-conducting composite material |
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| CN101230256A (en) * | 2008-01-04 | 2008-07-30 | 华南理工大学 | Method for preparing polyethylene glycol and epoxy resin formed composite phase-change materials |
| WO2016021899A1 (en) * | 2014-08-04 | 2016-02-11 | 주식회사 엘지화학 | Surface-modified nanoclay for preparing superabsorbent resin, and neutralization solution for preparing superabsorbent resin |
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