CN104609791B - Phase-change accumulation energy double limit homoiothermic mortar and preparation method thereof - Google Patents
Phase-change accumulation energy double limit homoiothermic mortar and preparation method thereof Download PDFInfo
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- CN104609791B CN104609791B CN201510041002.XA CN201510041002A CN104609791B CN 104609791 B CN104609791 B CN 104609791B CN 201510041002 A CN201510041002 A CN 201510041002A CN 104609791 B CN104609791 B CN 104609791B
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Abstract
The invention discloses phase-change accumulation energy double limit homoiothermic mortar and preparation method thereof, wherein phase-change accumulation energy double limit homoiothermic mortar includes: the cement of 25 weight portions；The medium sand of 20～55 weight portions；The phase-change microcapsule of 10～30 weight portions；The expanded perlite fixed phase change granule of 10～40 weight portions；The fiber of 0.25～1 weight portion；The cellulose ether of 0.2～0.5 weight portion；The redispersable latex powder of 1.5～3 weight portions；And 25～30 water of weight portion, wherein, the phase transition temperature of described phase-change microcapsule is 18～20 degrees Celsius, and the phase transition temperature of described expanded perlite fixed phase change granule is 26～28 degrees Celsius.Thus method is prepared phase-change accumulation energy double limit homoiothermic mortar and is had double limit temperature adjustment function, can not only significantly regulate the room temperature in the range of human comfort's temperature upper and lower limit, improve human settlement's thermal comfort, and by mixing phase-change microcapsule and two kinds of phase change mediums of expanded perlite fixed phase change granule again, improve energy storage and the homoiothermic ability of phase transition mortar product, the performance deficiency existed when overcoming certain phase change medium of single admixture.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of phase-change accumulation energy double limit homoiothermic mortar and preparation method thereof.
Background technology
In modern architecture especially skyscraper, lightweight building enclosure obtains and is increasingly widely applied, this be mainly because of
It is possible not only to significantly alleviate the self load bearing of building structure for lightweight building enclosure, and because having good thermal resistance, it is possible to
Improve the heat insulating effect of architectural exterior-protecting construction.But, owing to the thermal capacitance of lightweight building enclosure is little, heat storage capacity is poor,
Cannot absorb the solar radiant heat on storage daytime in a large number, cause indoor temperature too high for daytime, night is too low, and day and night fluctuation is big,
Thermal comfort is poor, and thereby results in the increase of air-conditioning and heating energy consumption, is unfavorable for building energy conservation.
Phase-changing energy-storing building materials is the focus of the most energy-saving building materials research field, and it is by phase by special process means
Become material to be incorporated in traditional construction material matrix, absorb when utilizing phase-change material generation phase in version or the characteristic of release heat, make
A kind of composite with energy-saving and temperature-regulating function.When phase-changing energy-storing building materials is applied to architectural exterior-protecting construction, it is possible to
Significantly increase the heat inertia index of building enclosure by means of himself stronger heat storage capacity, reduce fluctuations in indoor temperature, improve people and occupy
The thermal comfort of environment, reduces air-conditioning and heating energy consumption, reaches energy-conservation purpose.
Phase-change energy-storage temperature adjustment mortar is the more representational product of phase-change accumulation energy building materials field, and it is necessarily to encapsulate shape by having
The composite phase-change material of formula is incorporated in tradition slurry component as phase change medium, is prepared from by compositional refinements optimization, will
Its plastering engineering being applied to indoor wall can give body of wall energy storage and temperature adjustment function, substitutes tradition motar, the most additionally
Take the interior space, and easy construction, can smear by hand, it is possible to mechanically spraying.
Suitably it is mainly inorganic porous base fixed phase change granule and phase transformation as the material of phase change medium in phase-change energy-storage temperature adjustment mortar
Microcapsule.At present, the more commonly used inorganic porous base fixed phase change granule be with expanded perlite, expanded vermiculite, meerschaum,
Zeolites etc. are as phase-change material carrier, mainly less because of these material bulk density, and porosity is relatively big, has extremely strong absorption
Ability, low cost big as loading during phase-change material carrier, and phase-change material absorbing process are simple, and production efficiency is higher.
But, due to the particle diameter of inorganic porous base fixed phase change granule relatively big (general diameter is more than 2mm), and surface is in not advising
Then angular, when requiring higher to the latent heat of phase change value of mortar, increases its volume and mortar mixture mobility can be caused to reduce,
Cohesive force reduces, and workability is remarkably decreased.So, individually use inorganic porous base fixed phase change granule as phase change medium
Time, for ensureing mortar normal construction performance and mechanical property, its volume is significantly restrained, and then constrain mortar energy storage and
The lifting of temperature adjustment function.
Phase-change microcapsule is using organic high molecular polymer as cyst material, using phase-change material as core materials, Jing Guote
The micron order capsule particle that different Technology is prepared from.Micro encapsulation is the most reliable packaged type of current solid-liquid phase change material,
Can ensure that phase-change material is the most non-leakage, and clad ratio is higher, latent heat of phase change value is bigger.Phase-change microcapsule is pulverulence,
Easily uniform with other slurry component mix, particle surface is smooth, has lubrication, equal-volume replacement inside mortar
Mortar mixture fluidity can be increased after sand, improve workability.But, owing to phase-change microcapsule wall material is organic material, add
Enter in cement-based mortar matrix and can produce defect at interface cohesion, hardened mortar intensity when volume is bigger, can be significantly reduced,
Increase possibility of cracks, and phase-change microcapsule cost is of a relatively high, be unsuitable for volume relatively big, ultimately result in the energy storage of mortar
Fettered with homoiothermic ability.As can be seen here, individually fill inorganic porous base fixed phase change granule or phase-change microcapsule all exists
Certain technology and economic problems, it is difficult to obtain the significantly lifting of energy-saving and temperature-regulating function.
It addition, existing phase-change energy-storage temperature adjustment mortar product the most only has single phase transformation temperature points, temperature adjustment function has office
Sex-limited, when being in different constant interval in Various Seasonal indoor temperature, the phase transition mortar with single phase transformation temperature points is difficult to
Long-acting performance energy storage and homoiothermic effect.Such as, phase transition temperature is that the phase transition mortar of 28 degrees centigrade only can be through in summer
Go through phase transformation repeatedly and play a role, and be difficult to play a role when indoor air temperature is relatively low in cold season；Phase transition temperature is 18 Celsius
Phase transition mortar about degree only has indoor energy-saving and temperature-regulating meaning in autumn, winter, and is at phase transformation in summer material over time
Molten state, it is impossible to solid-liquid phase change occurs, loses energy-saving and temperature-regulating effect.So, there is the phase transformation sand of single phase transformation temperature points
Slurry can occur the number of times of effective phase transformation reaction less in the range of the whole year, and energy storage and thermoregulatory effect are the most notable.
Summary of the invention
It is contemplated that solve one of above-mentioned technical problem the most to a certain extent.Have to this end, the present invention proposes one
High heat storage and double limit temperature adjustment function, have phase-change accumulation energy double limit homoiothermic mortar and the system of excellent workability and mechanical property concurrently simultaneously
The method of this phase-change accumulation energy standby double limit homoiothermic mortar.
According to an aspect of the present invention, the present invention proposes a kind of phase-change accumulation energy double limit homoiothermic mortar, it is characterised in that bag
Include: the cement of 25 weight portions；The medium sand of 20～55 weight portions；The phase-change microcapsule of 10～30 weight portions；10～40 weight portions
Expanded perlite fixed phase change granule；The fiber of 0.25～1 weight portion；The cellulose ether of 0.2～0.5 weight portion；1.5～3 weight
The redispersable latex powder of part；And 25～30 water of weight portion, wherein, the phase transition temperature of described phase-change microcapsule is 18～20
Degree Celsius, the phase transition temperature of described expanded perlite fixed phase change granule is 26～28 degrees Celsius.
Thus, containing by phase-change microcapsule and expanded perlite in phase-change accumulation energy double limit homoiothermic mortar of the above embodiment of the present invention
The combined phase-change medium of fixed phase change granule composition, in mortar, phase-change microcapsule dispersed filler shapes in expanded perlite
Between phase change grains, the aggregate of the latter is utilized to support and crackle retardation, it is possible to limit phase-change microcapsule micro-with cement interface
The extension of crackle, meanwhile, phase-change microcapsule also can utilize its lubrication abatement expanded perlite fixed phase change granule to mortar
The negative effect of fluidity.Two kinds of phase change mediums have composite synergistic effect, not only increase the energy storage potentiality of phase transition mortar,
And overcome the performance deficiency existed when filling single phase change medium, make the present invention while having higher potential heat value, gather around
There are excellent workability and mechanical property.It addition, above-mentioned phase-change microcapsule and expanded perlite fixed phase change granule are respectively provided with
18～20 degrees Celsius and the phase transition temperature of 26～28 degrees Celsius, make phase-change accumulation energy double limit homoiothermic mortar of above-described embodiment have double
Limit temperature adjustment function, all can play energy-saving and temperature-regulating effect in Various Seasonal, notable regulation and control room temperature in human comfort's temperature,
In lower range, improve human settlement's thermal comfort, save air-conditioning and heating energy consumption.
It addition, phase-change accumulation energy according to the above embodiment of the present invention double limit homoiothermic mortar can also have following additional technology spy
Levy:
In some embodiments of the invention, after described phase-change accumulation energy double limit homoiothermic mortar hardening, comprcssive strength is 2.5～4.5MPa,
Linear shrinkage ratio is 0.1～0.3%, and it is 60～80kPa that pressure cuts adhesive strength, and latent heat of phase change is 25～60kJ/kg, and phase transition temperature is 18～20
Degree Celsius and 26～28 degrees Celsius.
In some embodiments of the invention, described cement is Portland cement；Described medium sand is fluvial sand, lake sand, mountain
At least one in sand, desalted sea sand and Machine-made Sand；Described fiber is in polypropylene fibre, Fypro and wood fibre
At least one；Described cellulose ether is methylcellulose and/or hydroxypropyl methyl cellulose；Described redispersable latex powder is
In ethylene-vinyl acetate copolymer, acrylate, acrylic styrene copolymer and SB
At least one.
In some embodiments of the invention, described phase-change microcapsule, including: cyst material；Core materials, described capsule-core
Material is coated on inside described cyst material, and wherein, the mean diameter of described phase-change microcapsule is 30～70 microns, latent heat
Value is 80～120kJ/kg, and optionally, described cyst material is polystyrene, polysulfones, polymethyl methacrylate and poly-carbonic acid
At least one in ester, optionally, described core materials is butyl stearate and/or hexadecane.
In some embodiments of the invention, described expanded perlite fixed phase change granule includes: expanded perlite；Phase transformation material
Material, described phase-change material is carried in described expanded perlite hole, in order to form expanded perlite fixed phase change grain skeleton
Structure；Covering material, described covering material is coated with the outer surface of described expanded perlite fixed phase change grain skeleton structure, its
In, the particle diameter of described expanded perlite fixed phase change granule is 1.5～3.5 millimeters, and potential heat value is 60～100kJ/kg, optionally,
The bulk density of described expanded perlite is 80～120kg/m3, optionally, described phase-change material be n-octadecane, Polyethylene Glycol,
At least one in ethyl palmitate, alkane-alkane, alkane-ol, alkane-acid, acid--ol eutectic sour, sour, optionally, described cladding
Material is polymer water cement paste.
According to another aspect of the present invention, the invention allows for one and prepare phase-change accumulation energy noted earlier double limit homoiothermic mortar
Method, including:
Preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius；
Preparation phase transition temperature is the expanded perlite fixed phase change granule of 26～28 degrees Celsius；
By the phase-change microcapsule of 10～30 weight portions and the expanded perlite fixed phase change granule of 10～40 weight portions and 25 weight portions
Cement；The medium sand of 20～55 weight portions；The fiber of 0.25～1 weight portion；The cellulose ether of 0.2～0.5 weight portion；And 1.5～3
The redispersable latex powder mixing dry mixing of weight portion, in order to obtain dry mash；And
It is stirred after adding the water of 25～30 weight portions in described dry mash, in order to obtain the double limit homoiothermic of described phase-change accumulation energy
Mortar.
Thus, utilize said method, can effectively prepare and there is high heat storage and double limit temperature adjustment function, have concurrently excellent simultaneously
The phase-change accumulation energy of good workability and mechanical property double limit homoiothermic mortar.The method is prepared and introduced phase transition temperature is 18～20 to take the photograph
Family name's degree is that 26～28 degrees Celsius of expanded perlites for upper limit homoiothermic are fixed for phase-change microcapsule and the phase transition temperature of lower limit homoiothermic
Shape phase change grains, makes phase-change accumulation energy double limit homoiothermic mortar be provided with double limit temperature adjustment function.Meanwhile, two kinds of phase change mediums are utilized
Composite synergistic effect, not only increases the energy storage potentiality of phase transition mortar, and overcomes existence when filling single phase change medium
Performance deficiency, while making phase-change accumulation energy double limit homoiothermic mortar have higher potential heat value, has excellent workability and mechanical property
Energy.
It addition, the method preparing phase-change accumulation energy double limit homoiothermic mortar according to the above embodiment of the present invention can also have the most attached
The technical characteristic added:
In some embodiments of the invention, described phase-change microcapsule and the weight ratio of described expanded perlite fixed phase change granule
For 1:(1～2).
In some embodiments of the invention, after described addition water, mixing time is 1～3 minute.
In some embodiments of the invention, described phase-change microcapsule is obtained by following method:
Surfactant is dissolved in the water, in order to obtain activity aqueous phase solution；
Cyst material and core materials are dissolved in organic solvent, in order to obtain oil-phase solution；
Described oil-phase solution is carried out high-speed stirred with described mixed being incorporated in mulser of activity aqueous phase solution, in order to obtain emulsion；
Described emulsion is carried out heating stirring at low speed, in order to volatilize described organic solvent obtain suspension；And
Described suspension is filtered, washed and dried, in order to obtain phase-change microcapsule,
Optionally, described cyst material is 1:(1～1.5 with the weight ratio of core materials),
Optionally, described organic solvent is dichloromethane, wherein, and cyst material and the total matter of core materials in described oil-phase solution
Amount concentration is 15～25%,
Optionally, described surfactant is sodium lauryl sulphate, dodecyl sodium sulfate, gelatin, polyvinyl alcohol and gathers
At least one in Pyrusussuriensis ester,
Optionally, in described activity aqueous phase solution, surfactant qualities concentration is 0.8～1.5%,
Optionally, described activity aqueous phase solution is 6:1 with the weight ratio of described oil-phase solution,
Optionally, described high-speed stirred speed is 2500～3000r/min, and the time is 30 minutes,
Optionally, described stirring at low speed speed is 500～700r/min, and the time is 2 hours, and heating-up temperature is 35～40 Celsius
Degree.
In some embodiments of the invention, described expanded perlite fixed phase change granule is obtained by following method:
Expanded perlite is dried, in order to obtain the expanded perlite being dried；
Phase-change material is heated, in order to obtain molten state phase-change material；
Carry out mixing and at decompression in vacuum response still with described molten state phase-change material by described dry expanded perlite
Reason, in order to obtain expanded perlite fixed phase change grain skeleton structure；
Described expanded perlite fixed phase change grain skeleton structure is cooled down；And
Utilize covering material that the described expanded perlite fixed phase change grain skeleton structure of cooling is carried out cladding maintenance, in order to
Obtain expanded perlite fixed phase change granule,
Optionally, described expanded perlite is 1:(1～1.5 with the weight ratio of molten state phase-change material),
Optionally, described dry temperature is 80 degrees Celsius, and the time is 24 hours,
Optionally, the pressure in described vacuum response still is 0.08～0.1MPa, and temperature is 40～50 degrees Celsius,
Optionally, described cladding uses spray coating mode.
Detailed description of the invention
According to an aspect of the present invention, the present invention proposes a kind of phase-change accumulation energy double limit homoiothermic mortar, the double limit of this phase-change accumulation energy
Homoiothermic mortar includes: the cement of 25 weight portions；The medium sand of 20～55 weight portions；The phase-change microcapsule of 10～30 weight portions；10～40
The expanded perlite fixed phase change granule of weight portion；The fiber of 0.25～1 weight portion；The cellulose ether of 0.2～0.5 weight portion；1.5～3
The redispersable latex powder of weight portion；And 25～30 water of weight portion, wherein, the phase transition temperature of described phase-change microcapsule is
18～20 degrees Celsius, the phase transition temperature of described expanded perlite fixed phase change granule is 26～28 degrees Celsius.
Thus, containing by phase-change microcapsule and expanded perlite in phase-change accumulation energy double limit homoiothermic mortar of the above embodiment of the present invention
The combined phase-change medium that fixed phase change granule forms according to rational proportion, in mortar, phase-change microcapsule dispersed filler is in swollen
Between swollen perlite fixed phase change granule, the aggregate of the latter is utilized to support and crackle retardation, it is possible to limit phase-change microcapsule
With the extension of cement interface micro-crack, meanwhile, phase-change microcapsule also can utilize its lubrication abatement expanded perlite setting phase
Become the granule negative effect to Mortar'S Flowability.Two kinds of phase change mediums have composite synergistic effect, not only increase phase transition mortar
Energy storage potentiality, and overcome fill single phase change medium time exist performance deficiency, make the present invention have higher latent heat
While value, have excellent workability and mechanical property.It addition, above-mentioned phase-change microcapsule and expanded perlite fixed phase change
Granule is respectively provided with 18～20 degrees Celsius and the phase transition temperature of 26～28 degrees Celsius, makes the double limit of phase-change accumulation energy of above-described embodiment adjust
Temperature mortar has double limit temperature adjustment function, all can play energy-saving and temperature-regulating effect in Various Seasonal, significantly regulates and controls room temperature people
In the range of body suitable temperature upper and lower limit, improve human settlement's thermal comfort, save air-conditioning and heating energy consumption.
According to a particular embodiment of the invention, the cement used in above-mentioned phase-change accumulation energy double limit homoiothermic mortar can be ordinary silicon acid
Salt cement.This cement is thus used to can ensure that intensity and the durability of phase-change accumulation energy double limit homoiothermic mortar as matrix material.
According to a particular embodiment of the invention, during above-mentioned medium sand is fluvial sand, lake sand, mountain sand, desalted sea sand and Machine-made Sand extremely
Few one.Thus use this medium sand can improve phase-change accumulation energy double limit homoiothermic mortar working, intensity and durable as fine aggregate
Property.
According to a particular embodiment of the invention, during above-mentioned fiber is polypropylene fibre, Fypro and wood fibre at least
A kind of.Thus use this fiber can in mortar uniformly disorderly to distributed in three dimensions around phase change medium, utilize it good
Tensile strength and toughness, effectively prevent phase-change accumulation energy double limit homoiothermic mortar from producing cracking phenomena.
According to a particular embodiment of the invention, above-mentioned cellulose ether is methylcellulose and/or hydroxypropyl methyl cellulose.Thus
Use this cellulose ether can play its water holding capacity, it is to avoid phase-change accumulation energy double limit homoiothermic mortar is because producing containing phase change medium
Free water isolation and denseness lose.
According to a particular embodiment of the invention, above-mentioned redispersable latex powder be ethylene-vinyl acetate copolymer, acrylate,
At least one in acrylic styrene copolymer and SB.Thus use this redispersable latex powder
Phase-change accumulation energy double limit homoiothermic mortar bonding strength can be increased by the space crosslinked action of polymer, reduce water absorption, improve
Crack resistance and pliability.
According to a particular embodiment of the invention, above-mentioned phase-change microcapsule includes: cyst material；Core materials, described capsule-core material
Material is coated on inside described cyst material, and wherein, the mean diameter of described phase-change microcapsule is 30～70 microns, potential heat value
80～120kJ/kg, phase transition temperature is 18～20 degrees Celsius.Thus have said structure phase-change microcapsule can dispersed filler in
Between above-mentioned expanded perlite fixed phase change granule, play its lubrication, improve the work of phase-change accumulation energy double limit homoiothermic mortar
Property, and at room temperature drop to play during human comfort's sendible temperature lower range its phase-changing and temperature-regulating effect, maintain Indoor Thermal to relax
Adaptive.
According to a particular embodiment of the invention, above-mentioned cyst material is polystyrene, polysulfones, polymethyl methacrylate and gathers
At least one in carbonic ester.Thus use this cyst material can form macromolecule dense film outside above-mentioned core materials,
Fully seal cladding core materials, it is ensured that non-leakage during the reaction of core materials generation solid-liquid phase change.
According to a particular embodiment of the invention, above-mentioned core materials is butyl stearate and/or hexadecane.Thus use this capsule
Core material can make the phase transition temperature of phase-change microcapsule be 18～20 degrees Celsius, and has higher latent heat of phase change value.
Thus, phase-change material can be reliably packaged in cyst material by the phase-change microcapsule of the above embodiment of the present invention, protects
Card phase-change material is the most non-leakage, and clad ratio is higher, and latent heat of phase change value is bigger.The phase transformation of the above embodiment of the present invention is micro-
Capsule is pulverulence, and easily with other slurry component mix uniformly, particle surface is smooth, has lubrication inside mortar
Effect, equal-volume can increase mortar mixture fluidity after substituting sand, improve workability.
According to a particular embodiment of the invention, above-mentioned expanded perlite fixed phase change granule includes: expanded perlite；Phase transformation material
Material, described phase-change material is carried in described expanded perlite hole, in order to form expanded perlite fixed phase change grain skeleton
Structure；Covering material, described covering material is coated with the outer surface of described expanded perlite fixed phase change grain skeleton structure, its
In, the particle diameter of described expanded perlite fixed phase change granule is 1.5～3.5 millimeters, and potential heat value is 60～100kJ/kg, phase alternating temperature
Degree is 26～28 degrees Celsius.The above-mentioned expanded perlite fixed phase change granule thus used can be stablized and a high proportion of support phase
Become material, and play phase-changing and temperature-regulating effect when room temperature rises to human comfort's sendible temperature upper range, maintain Indoor Thermal
Comfortableness.
According to a particular embodiment of the invention, the bulk density of above-mentioned expanded perlite is 80～120kg/m3.Thus use this swollen
Swollen perlite has good pellet hardness and bigger porosity concurrently, it is adaptable to as the carrier of above-mentioned phase-change material.
According to a particular embodiment of the invention, above-mentioned phase-change material be n-octadecane, Polyethylene Glycol, ethyl palmitate, alkane-alkane,
At least one in alkane-ol, alkane-acid, acid--ol eutectic sour, sour.Thus use this phase-change material can make expanded perlite
The phase transition temperature of fixed phase change granule is 26～28 degrees Celsius, and has higher latent heat of phase change value.
According to a particular embodiment of the invention, above-mentioned covering material is polymer water cement paste.Thus use this covering material also
Expanded perlite fixed phase change granule can be made to have hard shell through suitable maintenance, not only ensure that the sealing of granule, and
And improve granule strength, it is not pressurised breakage during plastering construction, around phase-change microcapsule, plays aggregate supporting role.
According to a particular embodiment of the invention, phase-change accumulation energy double limit homoiothermic mortar with said components and constituent content has good
Good mechanical property and energy-saving and temperature-regulating function.Specifically, pressure resistance after above-mentioned phase-change accumulation energy double limit homoiothermic mortar hardening is shown as
Degree is 2.5～4.5MPa, and linear shrinkage ratio is 0.1～0.3%, and it is 60kPa～80kPa that pressure cuts adhesive strength, and latent heat of phase change is
25～60kJ/kg, phase transition temperature is 18～20 degrees Celsius and 26～28 degrees Celsius.Thus this phase-change accumulation energy double limit homoiothermic mortar should
There is when indoor wall plastering engineering good energy-saving and temperature-regulating effect, it is possible to notable regulation and control room temperature are human comfort
In the range of temperature upper and lower limit, improve human settlement's thermal comfort, save air-conditioning and heating energy consumption.
According to another aspect of the present invention, the present invention proposes a kind of phase-change accumulation energy noted earlier pair of preparing and limits homoiothermic mortar
Method, the method includes: preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius；Preparation phase transition temperature is 26～28
Degree Celsius expanded perlite fixed phase change granule；By phase-change microcapsule and the expansion of 10～40 weight portions of 10～30 weight portions
Perlite fixed phase change granule and the cement of 25 weight portions；The medium sand of 20～55 weight portions；The fiber of 0.25～1 weight portion；
The cellulose ether of 0.2～0.5 weight portion；And 1.5～3 redispersable latex powder mixing dry mixing of weight portion, in order to obtain dry powder
Material；And be stirred after adding the water of 25～30 weight portions in described dry mash, in order to obtain the double limit of described phase-change accumulation energy
Homoiothermic mortar.
Thus, utilize said method, can effectively prepare and there is high heat storage and double limit temperature adjustment function, have concurrently excellent simultaneously
The phase-change accumulation energy of good workability and mechanical property double limit homoiothermic mortar.The process employs by phase-change microcapsule and expanded perlite
The combined phase-change medium that fixed phase change granule forms according to rational proportion, thus improve the energy storage potentiality of phase transition mortar, and
Overcome the performance deficiency existed when filling single phase change medium, make the present invention while having higher potential heat value, have excellent
Good workability and mechanical property.Additionally, phase-change microcapsule and expanded perlite fixed phase change granule have different phase alternating temperatures
Degree, makes the double homoiothermic mortar that limits of phase-change accumulation energy have double limit temperature adjustment function, it is possible to notable regulation and control room temperature are in human comfort's temperature
In the range of degree upper and lower limit.
According to a particular embodiment of the invention, above-mentioned phase-change microcapsule is 1 with the weight ratio of expanded perlite fixed phase change granule:
(1～2).Thus phase-change microcapsule can with proper ratio dispersed filler space between expanded perlite fixed phase change granule,
Play the respective advantage of two kinds of phase change mediums, make phase-change accumulation energy double limit homoiothermic mortar obtain optimal workability and mechanical property,
And improve its energy storage potentiality.
According to a particular embodiment of the invention, after above-mentioned addition water, mixing time is 1～3 minute.Thus use this mixing time
After can obtain mix homogeneously and there is phase-change accumulation energy double limit homoiothermic mortar mixture of works fine.
According to a particular embodiment of the invention, above-mentioned phase-change microcapsule is obtained by following method: be dissolved in by surfactant
In water, in order to obtain activity aqueous phase solution；Cyst material and core materials are dissolved in organic solvent, in order to obtain oil phase
Solution；Described oil-phase solution is carried out high-speed stirred with described mixed being incorporated in mulser of activity aqueous phase solution, in order to obtain breast
Liquid；Described emulsion is carried out heating stirring at low speed, in order to volatilize described organic solvent obtain suspension；And to described
Suspension is filtered, washed and dried, in order to obtain phase-change microcapsule.
Said method is utilized can effectively to prepare the phase-change microcapsule that phase transition temperature is 18～20 degrees Celsius.The method technique
It is simply, it is easy to control, in hgher efficiency compared to the produced in conventional processes such as situ aggregation method, interfacial polymerization, cost is lower,
It is particularly suited for preparing 30 degrees Celsius of applications below of phase transition temperature in the phase-change microcapsule material of architecture indoor energy-saving and temperature-regulating.
According to a particular embodiment of the invention, above-mentioned surfactant is sodium lauryl sulphate, dodecyl sodium sulfate, bright
At least one in glue, polyvinyl alcohol and Polysorbate.This surfactant is thus used can effectively to reduce above-mentioned oil phase molten
The interfacial tension of liquid, forms scattered, stable oil-in-water structure drop.
According to a particular embodiment of the invention, above-mentioned cyst material is 1:(1～1.5 with the weight ratio of core materials).Thus adopt
Can prepare by this weight ratio and there is reliable sealing performance and the phase-change microcapsule of higher latent heat of phase change value.When this weight ratio is too small
Time, phase-change microcapsule cyst wall is relatively thin, the most damaged and then generation leakage；When this weight ratio is excessive, core materials content is relatively
Low, the latent heat of phase change value of phase-change microcapsule is less.
According to a particular embodiment of the invention, above-mentioned organic solvent is dichloromethane, wherein, and cyst wall material in described oil-phase solution
Material and core materials total mass concentration are 15～25%.Thus use this organic solvent and weight ratio can make cyst material and capsule-core
Material is completely dissolved the homogeneous oil-phase solution of formation, and has suitable liquid phase viscosity, be conducive to final prepare particle diameter less and
The phase-change microcapsule being evenly distributed.
According to a particular embodiment of the invention, in above-mentioned activity aqueous phase solution, surfactant qualities concentration is 0.8～1.5%.By
This ensure that surfactant molecule is fully enriched in oil-water interfaces, plays surface-active action.
According to a particular embodiment of the invention, above-mentioned activity aqueous phase solution is 6:1 with the weight ratio of described oil-phase solution.Thus can
Enough obtain suitable system viscosity, it is provided that oil-in-water structure droplet distribution the adequate space of stable existence.
According to a particular embodiment of the invention, above-mentioned high-speed stirred speed is 2500～3000r/min, and the time is 30 minutes.By
This uses high-speed stirred can provide the enough shearing force of dispersion and stirring duration, makes oil-phase solution gradually be emulsified into tiny
Drop.
According to a particular embodiment of the invention, above-mentioned heating-up temperature is 35～40 degrees Celsius, and stirring at low speed speed is
500～700r/min, the time is 2 hours.Stirring at low speed can make organic solvent slowly, fully volatilize the most in a heated condition,
Cyst material gradually migrates to core materials surface film-forming, the above-mentioned phase-change microcapsule of final acquisition.
Specifically, the preparation method of phase-change microcapsule used by the present invention can be: by 10 parts of cyst materials and 10～15 parts of capsule-cores
Material is dissolved in 80～165 parts of organic solvents, above-mentioned oil-phase solution is slowly dropped into 600～1140 parts of mass concentrations and is
0.8～the aqueous surfactant solution of 1.5%, stir 30 minutes with 2500～3000r/min rotating speeds in mulser, then reduce
Rotating speed, to 500～700r/min, heats emulsion so that it is temperature reaches 35～40 degrees Celsius, continues stirring 2 hours, filter,
Wash, be dried, obtain phase-change microcapsule.
According to a particular embodiment of the invention, above-mentioned expanded perlite fixed phase change granule can be obtained by following method: will
Expanded perlite is dried, in order to obtain the expanded perlite being dried；Phase-change material is heated, in order to melted
State phase-change material；Carry out mixing also in vacuum response still with described molten state phase-change material by described dry expanded perlite
Reduced pressure treatment, in order to obtain expanded perlite fixed phase change grain skeleton structure；By described expanded perlite fixed phase change granule
Framing structure cools down；And utilize covering material the described expanded perlite fixed phase change grain skeleton structure of cooling to be wrapped
Cover and maintenance, in order to obtain expanded perlite fixed phase change granule.
Utilize said method effectively to prepare expanded perlite fixed phase change that phase transition temperature is 26～28 degrees Celsius
Grain.Owing to have employed expanded perlite as carrier, it is possible to use its absorption and skeletal support effect, make phase-change material at it
Carry out solid-liquid phase change reaction internal stability；Simultaneously by its surface being packaged cladding process, phase-change material can be avoided
There is seepage, and improve granule strength, be not pressurised breakage when carrying out plastering construction, give full play to it and store up in phase transformation
Can double aggregate supporting roles limited in homoiothermic mortars.
According to a particular embodiment of the invention, above-mentioned expanded perlite is 1:(1～1.5 with the weight ratio of molten state phase-change material).
Thus use the expanded perlite fixed phase change granule tool that the expanded perlite of this weight ratio prepares with molten state phase-change material
There are higher latent heat of phase change value, and phase-change material stable existence not easy to leak.
According to a particular embodiment of the invention, above-mentioned dry temperature is 80 degrees Celsius, and the time is 24 hours.Thus use
This drying condition can be dried process effectively to expanded perlite, gets rid of Free water in hole, it is simple to molten state phase transformation
Material absorbs in expanded perlite hole, improves the phase-change material load of the expanded perlite fixed phase change granule prepared
Carrying capacity.
According to a particular embodiment of the invention, the pressure in above-mentioned vacuum response still is 0.08～0.1MPa, and temperature is 40～50
Degree Celsius.Thus use mixing reduced pressure treatment under vacuum can maintain the molten state of phase-change material, it is simple to phase transformation material
Material enters in expanded perlite hole.
According to a particular embodiment of the invention, above-mentioned cladding uses spray coating mode.The spray coating mode energy thus used
Enough improve covering material utilization rate and coating efficiency, and make the expanded perlite fixed phase change granule prepared have smooth
Uniform clad.
Specifically, used by the present invention, the preparation method of expanded perlite fixed phase change granule can be: will be through 80 degrees Celsius of bakings
The expanded perlite of dry 24 hours is mixed homogeneously by a certain percentage with molten state phase-change material and is placed in vacuum response still, stirs
And heated material, it is ensured that reactor temperature is 40～50 degrees Celsius, and opens vacuum pump, under 0.09～0.1MPa negative pressure
Evacuation 5 minutes, venting, continues evacuation, venting, so circulation 6～10 times, discharging, cooling, spray coating, mark
Maintenance 24 hours under the conditions of standard, obtain expanded perlite fixed phase change granule.
Embodiment 1
Step one: preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius
10 parts of polystyrene and 10 parts of butyl stearates are dissolved in 80 parts of dichloromethane, above-mentioned oil-phase solution is slowly dripped
Enter the lauryl sodium sulfate aqueous solution of 600 part of 1% concentration, stir 30 minutes with 2800r/min rotating speed in mulser,
Then rotating speed is reduced to 500r/min, heating emulsion so that it is temperature reaches 35～40 degrees Celsius, continuation stirring 2 hours, mistake
Filter, wash, be dried, obtain polystyrene cyst wall butyl stearate capsule-core phase-change microcapsule, test its phase transformation through DSC
Temperature is 19.5 degrees Celsius, and latent heat of phase change is 84kJ/kg, and testing its mean diameter through laser particle analyzer is 38 microns.
Step 2: preparation phase transition temperature is the expanded perlite fixed phase change granule of 26～28 degrees Celsius
By after 80 degrees Celsius of drying, 10 parts of expanded perlites of 24 hours and 15 parts of molten state n-octadecane mix homogeneously
It is placed in vacuum response still, stirring heated material, reactor temperature 40～50 degrees Celsius, opens vacuum pump,
Evacuation 5 minutes under 0.09～0.1MPa negative pressure, venting, continue evacuation, venting, so circulation 10 times, discharging, cold
But, polymer water cement paste spray coating, maintenance 24 hours under standard conditions, obtain expanded perlite fixed phase change granule,
Testing its phase transition temperature through DSC is 28 degrees Celsius, and latent heat of phase change is 95kJ/kg, and mean diameter is 2.5mm.
Step 3: by 15 parts of phase-change microcapsules of preparation, 25 parts of expanded perlite fixed phase change granules and 25 in above-mentioned steps
Part Portland cement, 35 parts of medium sands, 0.8 part of polypropylene fibre, 0.45 part of methylcellulose, 2 parts of ethyl vinyl acetate second
Enoate copolymer mixing dry mixing uniformly powder, adds 25 parts of mixing waters, stirs and within 2 minutes, i.e. prepares phase-change accumulation energy double limit homoiothermic
Mortar.
The above-mentioned phase-change accumulation energy prepared double limit homoiothermic mortar has energy storage and double limit homoiothermic effect, and good mechanical property
Can, after hardening, comprcssive strength is 3.7MPa, and linear shrinkage ratio is 0.25%, and it is 75kPa that pressure cuts adhesive strength, and latent heat of phase change is
36kJ/kg, phase transition temperature is 19.5 degrees Celsius and 28 degrees Celsius.
Embodiment 2
Step one: preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius
10 parts of polysulfones and 12 parts of hexadecanes are dissolved in 88 parts of dichloromethane, oil-phase solution is slowly dropped into 660 part 0.8%
The sodium dodecyl sulfate aqueous solution of concentration, stirs 30 minutes with 2800r/min rotating speed in mulser, then reduces rotating speed
To 500r/min, heat emulsion so that it is temperature reaches 35～40 degrees Celsius, continue stirring 2 hours, filter, wash, do
Dry, obtain polysulfones cyst wall hexadecane capsule-core phase-change microcapsule, testing its phase transition temperature through DSC is 18.6 degrees Celsius,
Latent heat of phase change is 98kJ/kg, and testing its mean diameter through laser particle analyzer is 45 microns.
Step 2: preparation phase transition temperature is the expanded perlite fixed phase change granule of 26～28 degrees Celsius
By after 80 degrees Celsius of drying, 10 parts of expanded perlites of 24 hours and 13 parts of molten state Polyethylene Glycol mix homogeneously
It is placed in vacuum response still, stirring heated material, reactor temperature 40～50 degrees Celsius, opens vacuum pump,
Evacuation 5 minutes under 0.09～0.1MPa negative pressure, venting, continue evacuation, venting, so circulation 10 times, discharging, cold
But, polymer water cement paste spray coating, maintenance 24 hours under standard conditions, obtain expanded perlite fixed phase change granule,
Testing its phase transition temperature through DSC is 27.6 degrees Celsius, and latent heat of phase change is 69kJ/kg, and mean diameter is 2.5mm.
Step 3: by 12 parts of phase-change microcapsules of preparation, 24 parts of expanded perlite fixed phase change granules and 25 in above-mentioned steps
Part Portland cement, 39 parts of medium sands, 0.7 part of Fypro, 0.40 part of hydroxypropyl methyl cellulose, 2 parts of acrylic acid
Ester-styrene esters copolymer mixing dry mixing uniformly powder, adds 25 parts of mixing waters, stirs and i.e. prepare phase-change accumulation energy in 2 minutes
Double limit homoiothermic mortars.
The above-mentioned phase-change accumulation energy prepared double limit homoiothermic mortar has energy storage and double limit homoiothermic effect, and good mechanical property
Can, after hardening, comprcssive strength is 4.3MPa, and linear shrinkage ratio is 0.18%, and it is 78kPa that pressure cuts adhesive strength, and latent heat of phase change is
28kJ/kg, phase transition temperature is 18.6 degrees Celsius and 27.6 degrees Celsius.
Embodiment 3
Step one: preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius
15 parts of polymethyl methacrylates and 20 parts of hexadecanes are dissolved in 140 parts of dichloromethane, oil-phase solution is delayed
The slow polyvinyl alcohol water solution instilling 1050 part of 0.9% concentration, stirs 30 minutes with 2800r/min rotating speed in mulser,
Then rotating speed is reduced to 500r/min, heating emulsion so that it is temperature reaches 35～40 degrees Celsius, continuation stirring 2 hours, mistake
Filter, wash, be dried, obtain polymethyl methacrylate cyst wall hexadecane capsule-core phase-change microcapsule, test through DSC
Its phase transition temperature is 18.2 degrees Celsius, and latent heat of phase change is 105kJ/kg, and testing its mean diameter through laser particle analyzer is 52
Micron.
Step 2: preparation phase transition temperature is the expanded perlite fixed phase change granule of 26～28 degrees Celsius
By through 80 degrees Celsius of drying, 15 parts of expanded perlites of 24 hours and 20 parts of molten state ethyl palmitate mix homogeneously
It is placed in vacuum response still, stirring heated material, reactor temperature 40～50 degrees Celsius, opens vacuum pump,
Evacuation 5 minutes under 0.09～0.1MPa negative pressure, venting, continue evacuation, venting, so circulation 10 times, discharging, cold
But, polymer water cement paste spray coating, maintenance 24 hours under standard conditions, obtain expanded perlite fixed phase change granule,
Testing its phase transition temperature through DSC is 26.8 degrees Celsius, and latent heat of phase change is 86kJ/kg, and mean diameter is 2.5mm.
Step 3: by 20 parts of phase-change microcapsules of preparation, 35 parts of expanded perlite fixed phase change granules and 25 in above-mentioned steps
Part Portland cement, 20 parts of medium sands, 0.9 part of wood fibre, 0.48 part of hydroxypropyl methyl cellulose, 2.5 parts of styrene
-butadiene copolymer mixing dry mixing uniformly powder, adds 27 parts of mixing waters, stirs and within 2 minutes, i.e. prepares the double limit of phase-change accumulation energy
Homoiothermic mortar.
The above-mentioned phase-change accumulation energy prepared double limit homoiothermic mortar has energy storage and double limit homoiothermic effect, and good mechanical property
Can, after hardening, comprcssive strength is 2.9MPa, and linear shrinkage ratio is 0.25%, and it is 65kPa that pressure cuts adhesive strength, and latent heat of phase change is
51kJ/kg, phase transition temperature is 18.2 degrees Celsius and 26.8 degrees Celsius.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, need not pin to the schematic representation of above-mentioned term
To be identical embodiment or example.And, the specific features of description, structure, material or feature can be at any one
Or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the technology of this area
Personnel the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and
Combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (25)
1. phase-change accumulation energy double limit homoiothermic mortar, it is characterised in that including: the cement of 25 weight portions；20～55 weight portions
Medium sand；The phase-change microcapsule of 10～30 weight portions；The expanded perlite fixed phase change granule of 10～40 weight portions；0.25～1
The fiber of weight portion；The cellulose ether of 0.2～0.5 weight portion；The redispersable latex powder of 1.5～3 weight portions；And 25～30
The water of weight portion,
Wherein, the phase transition temperature of described phase-change microcapsule is 18～20 degrees Celsius, described expanded perlite fixed phase change granule
Phase transition temperature is 26～28 degrees Celsius,
Described cement is Portland cement；Described medium sand is in fluvial sand, lake sand, mountain sand, desalted sea sand and Machine-made Sand
At least one；Described fiber is at least one in polypropylene fibre, Fypro and wood fibre；Described cellulose ether
For methylcellulose and/or hydroxypropyl methyl cellulose；Described redispersable latex powder be ethylene-vinyl acetate copolymer, third
At least one in olefin(e) acid ester, acrylic styrene copolymer and SB.
Phase-change accumulation energy the most according to claim 1 double limit homoiothermic mortar, it is characterised in that the double limit of described phase-change accumulation energy is adjusted
After temperature mortar hardening, comprcssive strength is 2.5～4.5MPa, and linear shrinkage ratio is 0.1～0.3%, and it is 60～80kPa that pressure cuts adhesive strength,
Latent heat of phase change is 25～60kJ/kg, and phase transition temperature is 18～20 degrees Celsius and 26～28 degrees Celsius.
Phase-change accumulation energy the most according to claim 1 double limit homoiothermic mortar, it is characterised in that described phase-change microcapsule, bag
Include:
Cyst material；
Core materials, described core materials is coated on inside described cyst material,
Wherein, the mean diameter of described phase-change microcapsule is 30～70 microns, and potential heat value is 80～120kJ/kg.
Phase-change accumulation energy the most according to claim 3 double limit homoiothermic mortar, it is characterised in that described cyst material is polyphenyl
At least one in ethylene, polysulfones, polymethyl methacrylate and Merlon.
Phase-change accumulation energy the most according to claim 3 double limit homoiothermic mortar, it is characterised in that described core materials is stearic
Acid butyl ester and/or hexadecane.
Phase-change accumulation energy the most according to claim 1 double limit homoiothermic mortar, it is characterised in that described expanded perlite shapes
Phase change grains, including:
Expanded perlite；
Phase-change material, described phase-change material is carried in described expanded perlite hole, in order to form expanded perlite setting phase
Become grain skeleton structure；
Covering material, described covering material is coated with the outer surface of described expanded perlite fixed phase change grain skeleton structure,
Wherein, the particle diameter of described expanded perlite fixed phase change granule is 1.5～3.5 millimeters, and potential heat value is 60～100kJ/kg.
Phase-change accumulation energy the most according to claim 6 double limit homoiothermic mortar, it is characterised in that the heap of described expanded perlite
Long-pending density is 80～120kg/m3。
Phase-change accumulation energy the most according to claim 6 double limit homoiothermic mortar, it is characterised in that described phase-change material is positive ten
At least one in eight alkane, Polyethylene Glycol, ethyl palmitate, alkane-alkane, alkane-ol, alkane-acid, acid--ol eutectic sour, sour.
Phase-change accumulation energy the most according to claim 6 double limit homoiothermic mortar, it is characterised in that described covering material is polymerization
Thing cement paste.
10. the method preparing the double limit homoiothermic mortar of phase-change accumulation energy described in any one of claim 1-9, it is characterised in that
Including:
Preparation phase transition temperature is the phase-change microcapsule of 18～20 degrees Celsius；
Preparation phase transition temperature is the expanded perlite fixed phase change granule of 26～28 degrees Celsius；
By the phase-change microcapsule of 10～30 weight portions and the expanded perlite fixed phase change granule of 10～40 weight portions and 25 weight portions
Cement；The medium sand of 20～55 weight portions；The fiber of 0.25～1 weight portion；The cellulose ether of 0.2～0.5 weight portion；And 1.5～3
The redispersable latex powder mixing dry mixing of weight portion, in order to obtain dry mash；And
It is stirred after adding the water of 25～30 weight portions in described dry mash, in order to obtain the double limit homoiothermic of described phase-change accumulation energy
Mortar.
11. methods according to claim 10, it is characterised in that described phase-change microcapsule is fixed with described expanded perlite
The weight ratio of shape phase change grains is 1:(1～2).
12. methods according to claim 10, it is characterised in that after described addition water, mixing time is 1～3 minute.
13. methods according to claim 10, it is characterised in that described phase-change microcapsule is obtained by following method:
Surfactant is dissolved in the water, in order to obtain activity aqueous phase solution；
Cyst material and core materials are dissolved in organic solvent, in order to obtain oil-phase solution；
Described oil-phase solution is carried out high-speed stirred with described mixed being incorporated in mulser of activity aqueous phase solution, in order to obtain emulsion；
Described emulsion is carried out heating stirring at low speed, in order to volatilize described organic solvent obtain suspension；And
Described suspension is filtered, washed and dried, in order to obtain phase-change microcapsule.
14. methods according to claim 13, it is characterised in that described cyst material with the weight ratio of core materials is
1:(1～1.5).
15. methods according to claim 13, it is characterised in that described organic solvent is dichloromethane, wherein, institute
Stating cyst material and core materials total mass concentration in oil-phase solution is 15～25%.
16. methods according to claim 13, it is characterised in that described surfactant be sodium lauryl sulphate,
At least one in dodecyl sodium sulfate, gelatin, polyvinyl alcohol and Polysorbate.
17. methods according to claim 13, it is characterised in that surfactant qualities in described activity aqueous phase solution
Concentration is 0.8～1.5%.
18. methods according to claim 13, it is characterised in that described activity aqueous phase solution and described oil-phase solution
Weight ratio is 6:1.
19. methods according to claim 13, it is characterised in that described high-speed stirred speed is 2500～3000r/min,
Time is 30 minutes.
20. methods according to claim 13, it is characterised in that described stirring at low speed speed is 500～700r/min,
Time is 2 hours, and heating-up temperature is 35～40 degrees Celsius.
21. methods according to claim 10, it is characterised in that under described expanded perlite fixed phase change granule passes through
Row method obtains:
Expanded perlite is dried, in order to obtain the expanded perlite being dried；
Phase-change material is heated, in order to obtain molten state phase-change material；
Carry out mixing and at decompression in vacuum response still with described molten state phase-change material by described dry expanded perlite
Reason, in order to obtain expanded perlite fixed phase change grain skeleton structure；
Described expanded perlite fixed phase change grain skeleton structure is cooled down；And
Utilize covering material that the described expanded perlite fixed phase change grain skeleton structure of cooling is carried out cladding maintenance, in order to
Obtain expanded perlite fixed phase change granule.
22. methods according to claim 21, it is characterised in that described expanded perlite and molten state phase-change material
Weight ratio is 1:(1～1.5).
23. methods according to claim 21, it is characterised in that described dry temperature is 80 degrees Celsius, the time
It it is 24 hours.
24. methods according to claim 21, it is characterised in that the pressure in described vacuum response still is
0.08～0.1MPa, temperature is 40～50 degrees Celsius.
25. methods according to claim 21, it is characterised in that described cladding uses spray coating mode.
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| CN101343429B (en) * | 2008-09-01 | 2010-06-23 | 刘金德 | Intelligent temperature adjusting composite coating material and coating method thereof |
| CN101671149B (en) * | 2009-09-24 | 2011-11-09 | 中国人民解放军后勤工程学院 | Paraffin microencapsulated phase-change thermal-storage mortar and preparation method thereof |
| DE102010047673A1 (en) * | 2010-10-06 | 2012-04-12 | Scherff Gmbh & Co. Kg | Building material e.g. plaster stuck to ceiling of building e.g. office, comprises acoustic plaster and latent heat storage mass that is provided with microcapsules made of polymethyl methacrylate |
| CN102827583B (en) * | 2012-08-03 | 2015-06-17 | 上海英硕聚合材料股份有限公司 | Phase change composite material and preparation method thereof |
| US9512344B2 (en) * | 2013-02-15 | 2016-12-06 | The Regents Of The University Of Michigan | Thermally adaptive ductile concrete |
| CN103570311B (en) * | 2013-10-23 | 2015-12-02 | 沈阳建筑大学 | The preparation method of a kind of paraffin/pearlstone phase transition insulation mortar |
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