CN106045428B - A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment and preparation method thereof - Google Patents
A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment and preparation method thereof Download PDFInfo
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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
- C04B28/06—Aluminous cements
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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
- C04B28/30—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 magnesium cements or similar cements
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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Abstract
A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment and preparation method thereof, is related to building energy-saving heat-insulating material field, it is characterised in that phase-change material subparticle surface wraps the powdery phase-transition heat-preserving powder of nanometer hydraulicity gel-forming.By the shell of nanometer hydraulicity gel-forming, phase-change material is carried out solid liquid phase transition loop in relatively independent space, will not separate out, seepage, especially for energy-saving temperature-regulating performance is improved, can largely add, the intensity of construction material will not be impacted.Because the shell of phase-change material is hydraulicity gel, therefore the adaptability in construction material is stronger, has fabulous compatibility and mix with concrete, mortar, putty, coating.Further, be mixed with thermal conducting agent in hydraulicity gel, improve temperature adjustment susceptibility, phase-change material is absorbed heat in time or heat release, not only save, and all the time will in building adjustment in suitable temperature.Production technology is easily-controllable, and cost is low, and technical support is provided applied to building energy conservation temperature adjustment field for phase-change material.
Description
Technical field
The present invention relates to building energy-saving heat-insulating material field, and in particular to a kind of phase-transition heat-preserving for building energy conservation temperature adjustment
Powder and preparation method thereof.
Background technology
Phase-change material（Phase Change Material-PCM）Refer to vary with temperature and change form and can provide latent
The material of heat.Phase-change material can absorb heat and store it in the form of latent heat of phase change, in temperature when temperature is higher
When relatively low, then the heat of absorption discharged, realize migration of the energy between different space-time positions, this helps to alleviate
The confession of energy with ask between contradiction, effectively reduce energy resource consumption.Temperature is maintained into a metastable temperature model simultaneously
In enclosing.Therefore, using the house of phase-change material construction, permanent constant temperature " air-conditioned room " can be formed.At present, phase-change material is made
For a kind of new energy-saving material, quick development has been obtained in the application of building field.Particularly in concrete, wallboard, gypsum
In plate, floor, ceiling, putty, coating etc. using can be greatly reduced in building be used for refrigerating/heating needed for energy
Consumption, energy-saving effect are far superior to traditional heat preserving and insulating material.
However, phase-change material is the material that a kind of phase is varied with temperature and changed, would generally be caused in use is added
Concrete, coating equal strength declines and aging, or even precipitation, seepage occurs, and energy-saving and temperature-regulating is just being lost after circulating several times
Effect.Therefore, phase-change material needs solve two key issues in the application of building energy saving field：1st, phase-change material is to Building wood
Expect the influence of the heart infarctions such as intensity；2nd, phase-change material separated out in construction material, seepage, failure the problem of.
In order to which phase-change material and common building materials are used in mixed way, therefore it is compound to carry out shaping before application first.Mesh
Preceding conventional technological means has direct absorption, microcapsule coated, the absorption sizing of loose structure mineral etc..Publication number
A kind of phase-change energy-storage composite coating material of CN101139472A patent literature and preparation method thereof, the technological invention proposes
Organic phase change material and the porous graphite of expansion are combined into energy storage micro mist, available for coating.Publication number CN1513938A's is special
A kind of microcapsule coated phase-change material of sharp document report and preparation method thereof, the technology is by microcapsules technology by phase-change material
It is coated in microcapsules and obtains a kind of powdered, can adds in the face of plastering to wall.Publication number 101671545A patent
A kind of method for preparing granular composite phase change material for saving energy of buildings is disclosed, the phase-change material finished product of use is compound obtained
Composite phase-change material is white fine granularity.A kind of phase change anticracking grout of publication number CN1903781A patent report and
The preparation method of its used phase change material particulate, phase-change material is using porous media as matrix material, by molten in polymer
Immersion for a long time reaches cladding processing in liquid.Publication number CN102795805 B report a kind of energy-saving phase-change constant-temperature building material
And preparation method, form shaped composite phase-change material using phase-change material, nano-oxide, converted starch.
Above-mentioned report takes different technologies means to reach sizing phase-change material, prevents seepage.But its durability compared with
Difference, it is the defects of seepage is still had in materials'use, compatible with inorganic construction substrate when particularly being used with higher addition
Property it is poor, workability is poor, causes the cohesive force of itself and concrete substrate to be deteriorated, so as to cause intensity decreases, influence in construction material
In mixing and use.
The content of the invention
For above-mentioned technical deficiency, the present invention provides a kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment, is especially
Phase-change material is micronized into solid particle, and wraps one layer of hydraulicity gel shell on surface and obtains a kind of phase-transition heat-preserving powder,
The phase-transition heat-preserving powder is not only with concrete, mortar, putty, coating by good compatibility and mix, and phase-change material exists
Phase in version is independently carried out in the shell of hydraulicity gel-forming, does not separate out, is non-leakage, not influenceing the use intensity of construction material, from
Extensive use of the phase-change material in building energy conservation temperature adjustment field is fundamentally promoted.Further provide for the preparation of the phase-transition heat-preserving powder
Method.
To solve the above problems, the present invention is achieved through the following technical solutions：
The preparation method of a kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment, it is characterized in that preparation method is according to such as lower section
Formula is carried out：
（1）The preparation of phase-change material subparticle：The modifying agent of the phase-change material of 70-80 parts by weight, 3-5 parts by weight is existed
Modification is ground under the conditions of less than 20 DEG C, 50 mesh sieves is crossed and obtains phase-change material subparticle；
（2）The preparation of nanometer hydraulicity gel slurry body：By the hydraulicity gel of 10-20 parts by weight, the diminishing of 1-2 parts by weight
Agent, the thermal conducting agent of 0.5-1 parts by weight and suitable quantity of water are modulated into slurry, and grinding obtains a nanometer hydraulicity gel slurry body；
（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular
Circulator, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control exists
Less than 30 DEG C, by step（2）Obtained nanometer hydraulicity gel slurry body coagulates with the latex powder of 2-3 parts by weight, the fast of 1-2 parts by weight
Agent is well mixed, and runs through the phase-change material subparticle that spray equipment sprays to suspension, slurry is adhered to phase-change material
Subparticle surface；
（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle of slurry will be adhered to
Aging device is sent into, aging device is electrodeless variable-speed electric machine speed regulation, rotates 5-10min with 150-200rpm speed, adjustment turns
Speed rotates 30-45min for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface,
Then spontaneously dry, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment.
Wherein described phase-change material is Sodium acetate trihydrate, sal glauberi, disodium hydrogen phosphate, three chloride hydrates
Calcium, n-eicosane, 58# paraffin, 52# paraffin, 30# paraffin, n-capric acid, laurate, myristic acid, palmitic acid, stearic acid, tristearin
At least one of acid butyl ester；The modifying agent is at least one of sodium tripolyphosphate, calgon, chlorinated paraffin；Institute
The hydraulicity gel stated is in portland cement, aluminate cement, sulphate aluminium cement, fluoroaluminate cement, lime, gypsum
It is at least one；Described water reducer is in sulfonated melamine compound resin, lignosulfonates, naphthalene sulphonate formaldehyde polymer
At least one；Described rubber powder is redispersible rubber powder；Described quick-setting additive is sodium metaaluminate, high alumina gel rubber material, water chestnut
One kind in magnesium binder materials.
Preferably, described phase-change material selects laurate, and its phase transition temperature is 30-35 DEG C, can be by temperature adjusting
In the range of human comfort.
Preferably, described phase-change material selects positive certain herbaceous plants with big flowers sour and lauric mixture；Further preferably, described phase transformation
The positive certain herbaceous plants with big flowers acid of material selection is with laurate with mass ratio 1:2 mixture.
Preferably, described thermal conducting agent is at least one of graphite powder, aluminium powder, nano aluminium oxide.
Preferably, described re-dispersible glue powder is vinylacetate and ethylene copolymer rubber powder, vinylacetate and ethene
And higher aliphatic vinyl acetate ternary polymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate
And at least one of higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder, polyvinyl alcohol rubber powder.
A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment prepared by the above method, it is characterised in that phase-change material is micro-
Fine grained surface wraps the powdery phase-transition heat-preserving powder of nanometer hydraulicity gel-forming.Pass through the outer of nanometer hydraulicity gel-forming
Shell, phase-change material is carried out solid-liquid phase transition loop in relatively independent space, will not separate out, seepage, especially for raising
It energy-saving temperature-regulating performance, can largely add, the intensity of construction material will not be impacted.Because the shell of phase-change material is water
Rigid gel, therefore the adaptability in construction material is stronger, has fabulous compatibility with concrete, mortar, putty, coating
With mix.Further, be mixed with thermal conducting agent in hydraulicity gel, improve temperature adjustment susceptibility, enable phase-change material and
When heat absorption or heat release, not only save, and all the time will in building adjustment in suitable temperature.
A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment of the invention and preparation method thereof, is coagulated by the hydraulicity of routine
Glue coating phase-change materials obtain phase-transition heat-preserving powder, and not only production technology is easily-controllable, and cost is low, and obtained phase-transition heat-preserving powder solves
The defects of phase-change material precipitation, seepage, poor compatibility, failure easy to aging, it is applied to building energy conservation temperature adjustment neck for phase-change material
Domain provides technical support.
A kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment of the invention, it is prominent compared with prior art the characteristics of and it is beneficial
Effect be：
1st, phase-transition heat-preserving powder of the present invention does not separate out, is non-leakage, has good compatibility, mix with construction material, can
A large amount of addition uses are in the construction materials such as concrete, mortar, putty, coating.
2nd, phase-transition heat-preserving powder good heat conductivity of the present invention, indoor temperature can be adjusted in time, there is higher change
The thermal efficiency.
3rd, phase-transition heat-preserving powder of the present invention is wrapped up using the hydraulicity gel of conventional inexpensive, and production technology process is brief, can connect
Continuousization operates, and easy to implement with controlling, cost is cheap, beneficial to industrialized production.
Embodiment
Detailed description below, the above of the present invention is described in further detail again.But this should not be managed
The scope solved as the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, root
The various replacements or change made according to ordinary skill knowledge and customary means, all should be included within the scope of the invention.
Embodiment 1
（1）The preparation of phase-change material subparticle：The modulation suitable phase-change material of phase transition temperature as needed, by positive certain herbaceous plants with big flowers acid
With laurate with mass ratio 1:2 are modulated to obtain composite phase-change material, by the composite phase-change material of 80 parts by weight, 5 parts by weight
Sodium tripolyphosphate be ground modification under the conditions of less than 20 DEG C, cross 50 mesh sieves and obtain phase-change material subparticle；
（2）The preparation of nanometer hydraulicity gel slurry body：By the sulphate aluminium cement of 10 parts by weight, the sulfonation three of 2 parts by weight
Melamine-formaldehyde resin, the thermal conducting agent graphite powder of 0.5 parts by weight and suitable quantity of water are modulated into slurry, and grinding obtains a nanometer hydraulicity and coagulated
Rubber cement body；
（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular
Circulator, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control exists
Less than 30 DEG C, by step（2）The polyvinyl alcohol rubber powders of obtained nanometer hydraulicity gel slurry body and 2 parts by weight, 1 parts by weight it is inclined
Sodium aluminate is well mixed, and runs through the phase-change material subparticle that spray equipment sprays to suspension, slurry is adhered to phase transformation
Material subparticle surface；
（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle of slurry will be adhered to
Aging device is sent into, aging device is electrodeless variable-speed electric machine speed regulation, rotates 5-10min with 150-200rpm speed, adjustment turns
Speed rotates 30-45min for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface,
Then spontaneously dry, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment.
The phase-transition heat-preserving powder of building energy conservation temperature adjustment has the compatible mix good with cement, putty, coating, can same bed
Logical additive equally carries out directly addition and used.Typical test, in indoor putty, phase transition temperature to be 36 DEG C, through 200
It is secondary it is cold and hot follow no precipitation, temperature adjustment temperature control performance is stable.
Embodiment 2
（1）The preparation of phase-change material subparticle：By sal glauberi, disodium hydrogen phosphate, the modulation of 52# paraffin
Afterwards, the composite phase-change material of 80 parts by weight, the chlorinated paraffin of 4 parts by weight is taken to be ground modification, mistake under the conditions of less than 20 DEG C
50 mesh sieves obtain phase-change material subparticle；
（2）The preparation of nanometer hydraulicity gel slurry body：The hydraulicity that 15 parts by weight silicate cement, lime form is coagulated
Glue, the lignosulfonates of 1 parts by weight, the thermal conducting agent aluminium powder of 1 parts by weight and suitable quantity of water are modulated into slurry, and grinding obtains nanometer water
Rigid gel slurry；
（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular
Circulator, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control exists
Less than 30 DEG C, by step（2）Obtained nanometer hydraulicity gel slurry body and the vinylacetate of 3 parts by weight and ethene and advanced fat
Fat vinyl acetate ternary polymerization rubber powder, the magnesite binding material of 2 parts by weight are well mixed, and run through spray equipment spray to it is outstanding
Floating phase-change material subparticle, slurry is set to be adhered to phase-change material subparticle surface；
（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle of slurry will be adhered to
Aging device is sent into, aging device is electrodeless variable-speed electric machine speed regulation, rotates 5-10min with 150-200rpm speed, adjustment turns
Speed rotates 30-45min for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface,
Then spontaneously dry, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment.
Cyclical stability experiment, cycles samples 800 times, enthalpy 215J/g are carried out to phase-transition heat-preserving powder.
Embodiment 3
（1）The preparation of phase-change material subparticle：By 75 parts by weight n-capric acids, the composite phase-change material of butyl stearate, 5
The calgon of parts by weight is ground modification under the conditions of less than 20 DEG C, crosses 50 mesh sieves and obtains phase-change material subparticle；
（2）The preparation of nanometer hydraulicity gel slurry body：By the sulphate aluminium cement of 20 parts by weight, fluoroaluminate cement hydraulic
Property gel, the water reducer naphthalene sulphonate formaldehyde polymer of 1 parts by weight, the thermal conducting agent nano aluminium oxide of 06 parts by weight and suitable quantity of water adjust
Slurry is made, grinding obtains a nanometer hydraulicity gel slurry body；
（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular
Circulator, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control exists
Less than 30 DEG C, by step（2）Obtained nanometer hydraulicity gel slurry body and the acrylate of 3 parts by weight and styrene copolymerized glue
Powder, the quick-setting additive high alumina gel rubber material of 1 parts by weight are well mixed, and run through spray equipment spray to suspension phase-change material it is micro-
Fine grained, slurry is set to be adhered to phase-change material subparticle surface；
（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle of slurry will be adhered to
Aging device is sent into, aging device is electrodeless variable-speed electric machine speed regulation, rotates 5-10min with 150-200rpm speed, adjustment turns
Speed rotates 30-45min for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface,
Then spontaneously dry, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment.
Simulation application environment, cold and hot 30-45 DEG C of the phase transformation in high/low temperature circulating box, detect again after 1000 times, detection knot
Fruit is：Product phase transition temperature is reduced to 35 DEG C by original 37, changes smaller, stable performance, meets temperature control needs.
Embodiment 4
（1）The preparation of phase-change material subparticle：After sal glauberi, butyl stearate modulation, 80 parts by weight are taken
Composite phase-change material, the chlorinated paraffin of 4 parts by weight are ground modification under the conditions of less than 20 DEG C, cross 50 mesh sieves and obtain phase transformation material
Expect subparticle；
（2）The preparation of nanometer hydraulicity gel slurry body：The hydraulicity that 15 parts by weight silicate cement, lime form is coagulated
Glue, the lignosulfonates of 1 parts by weight, the thermal conducting agent aluminium powder of 1 parts by weight and suitable quantity of water are modulated into slurry, and grinding obtains nanometer water
Rigid gel slurry；
（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular
Circulator, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control exists
Less than 30 DEG C, by step（2）Obtained nanometer hydraulicity gel slurry body and the vinylacetate of 3 parts by weight and ethene and advanced fat
Fat vinyl acetate ternary polymerization rubber powder, the magnesite binding material of 2 parts by weight are well mixed, and run through spray equipment spray to it is outstanding
Floating phase-change material subparticle, slurry is set to be adhered to phase-change material subparticle surface；
（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle of slurry will be adhered to
Aging device is sent into, aging device is electrodeless variable-speed electric machine speed regulation, rotates 5-10min with 150-200rpm speed, adjustment turns
Speed rotates 30-45min for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface,
Then spontaneously dry, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment.
The phase-transition heat-preserving powder for the building energy conservation temperature adjustment that the present invention obtains, typical application are：By 55% cement, 35%
Aggregate, 3% fiber, 7% phase-transition heat-preserving powder are modulated into phase change temperature adjustment mortar, for wall internal layer.
After tested, compression shear adhesion strength is 65kpa, compression strength 246kpa, and phase transition mortar intensity does not have with traditional mortar
There is significant difference；Phase transition temperature is about 28-32 DEG C, and performance is undamped after 200 circulations.
Claims (5)
- A kind of 1. preparation method of phase-transition heat-preserving powder for building energy conservation temperature adjustment, it is characterized in that preparation method is as follows Carry out：（1）The preparation of phase-change material subparticle：By the phase-change material of 70-80 parts by weight, 3-5 parts by weight modifying agent less than Modification is ground under the conditions of 20 DEG C, 50 mesh sieves is crossed and obtains phase-change material subparticle；（2）The preparation of nanometer hydraulicity gel slurry body：By the hydraulicity gel of 10-20 parts by weight, 1-2 parts by weight water reducer, The thermal conducting agent of 0.5-1 parts by weight is modulated into slurry with suitable quantity of water, and grinding obtains a nanometer hydraulicity gel slurry body；（3）The parcel of phase-change material subparticle：By step（1）Obtained phase-change material subparticle is sent into horizontal tubular rotation Device, particle is set to be suspended with circulator inwall with 200-400rpm speed rotation, horizontal tubular circulator temperature control is at 30 DEG C Hereinafter, by step（2）Obtained nanometer hydraulicity gel slurry body mixes with the latex powder of 2-3 parts by weight, the quick-setting additive of 1-2 parts by weight Close uniformly, and run through the phase-change material subparticle that spray equipment sprays to suspension, slurry is adhered to phase-change material fine Particle surface；（4）Solidify drying：Conveyed by the rotation of horizontal tubular circulator, the phase-change material subparticle for adhering to slurry is sent into Aging device, aging device use electrodeless variable-speed electric machine speed regulation, rotate 5-10min with 150-200rpm speed, adjust rotating speed 30-45min is rotated for 50-80rpm, the solidification completely of nanometer hydraulicity gel is wrapped in phase-change material subparticle surface, so Spontaneously dry afterwards, sieving obtains the phase-transition heat-preserving powder of building energy conservation temperature adjustment；Wherein described phase-change material be Sodium acetate trihydrate, sal glauberi, disodium hydrogen phosphate, three calcium chloride hydrates, N-eicosane, 58# paraffin, 52# paraffin, 30# paraffin, n-capric acid, laurate, myristic acid, palmitic acid, stearic acid, stearic acid At least one of butyl ester；The modifying agent is at least one of sodium tripolyphosphate, calgon, chlorinated paraffin；It is described Hydraulicity gel be portland cement, aluminate cement, sulphate aluminium cement, fluoroaluminate cement, lime, in gypsum extremely Few one kind；Described water reducer is in sulfonated melamine compound resin, lignosulfonates, naphthalene sulphonate formaldehyde polymer It is at least one；Described latex powder is redispersible rubber powder；Described quick-setting additive is sodium metaaluminate, high alumina gel rubber material, water chestnut One kind in magnesium binder materials.
- A kind of 2. preparation method of phase-transition heat-preserving powder for building energy conservation temperature adjustment according to claim 1, it is characterised in that： Described phase-change material is from n-capric acid with laurate with mass ratio 1:2 mixture.
- A kind of 3. preparation method of phase-transition heat-preserving powder for building energy conservation temperature adjustment according to claim 1, it is characterised in that： Described thermal conducting agent is at least one of graphite powder, aluminium powder, nano aluminium oxide.
- A kind of 4. preparation method of phase-transition heat-preserving powder for building energy conservation temperature adjustment according to claim 1, it is characterised in that： Described redispersible rubber powder is vinylacetate and ethylene copolymer rubber powder, vinylacetate and ethene and higher fatty acids second Alkene ester ternary polymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate and higher fatty acids second At least one of alkene ester ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder, polyvinyl alcohol rubber powder.
- 5. a kind of phase-transition heat-preserving powder for building energy conservation temperature adjustment, it is characterised in that as the system described in claim any one of 1-4 Preparation Method is made, and phase-change material subparticle surface wraps the powdery phase-transition heat-preserving powder of nanometer hydraulicity gel-forming.
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| CN108225587A (en) * | 2018-01-28 | 2018-06-29 | 蔡兴礼 | A kind of test method of phase-change microcapsule or the plank temperature in phase transition process |
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