CN106701032B - A kind of composite phase change heat-accumulation material, microcapsules and preparation method thereof - Google Patents
A kind of composite phase change heat-accumulation material, microcapsules and preparation method thereof Download PDFInfo
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- CN106701032B CN106701032B CN201611152608.1A CN201611152608A CN106701032B CN 106701032 B CN106701032 B CN 106701032B CN 201611152608 A CN201611152608 A CN 201611152608A CN 106701032 B CN106701032 B CN 106701032B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
The present invention provides a kind of composite phase change heat-accumulation materials, microcapsules and preparation method thereof.The composite phase change heat-accumulation material includes liquid metal and paraffin；Wherein, the absolute value of the difference of the fusing point of the liquid metal and the melting point of paraffin wax is not more than 5 DEG C.Composite phase change heat-accumulation material provided by the present invention mutually separates during sensible heat accumulation of heat is with phase-transition heat-storage without apparent, the volume of heat-storing material is held essentially constant, the reaction time of accumulation of heat is short, heat-storing material and microcapsules of the invention meets the demand of the accumulation of heat microcapsules of disposable heat-storing material and recycling respectively, can be widely used in the fields such as aerospace, submarine, silk weaving industry and building energy conservation.
Description
Technical field
The present invention relates to phase-changing energy-storing fields, more particularly, to a kind of composite phase-change hot material, microcapsules and its preparation
Method.
Background technique
Increasingly serious with energy environment, there is an urgent need in high efficient energy sources, power-saving technology, clean energy resource and renewable energy
It makes progress in the fields such as source.Phase-change accumulation energy is the important technology for improving efficiency of energy utilization and protecting environment, is to alleviate the energy to supply
Answer both sides in time, the unmatched effective means of intensity and place.Phase-change material is the core of phase change energy storage technology.Phase transformation material
Material is a kind of new chemical material that can store thermal energy, it occurs object phase change in phase transition temperature, and along with absorption or
Heat is released, can be used to regulate and control the temperature of ambient enviroment or for storing heat.
Microcapsule phase-change heat accumulating is a kind of new phase change materials for heat energy storage, generallys use paraffin or salt as phase transformation material
Material is made with the preferable polycondensation class high molecular material of the chemical stabilities such as melamine resin, polyureas urea formaldehyde, polyurethane
For microcapsule wall material, it can be used for the energy storages fields such as silk weaving industry, building energy conservation facility, aerospace and submarine.But
Due to the limitation of phase-change material itself, that there is thermal conductivitys is low for such phase-change material, the reaction time is long, phase transformation when volume change
The problems such as big.
Summary of the invention
For current wax phase change heat accumulating there are the shortcomings that, solid liquid phase heating and stone the present invention is based on liquid metal
Wax solid liquid phase heating is suitable, using the good thermal conductivity of liquid metal and thermal expansivity, proposes a kind of composite phase-change heat-storage material
Material, microcapsules and preparation method thereof, it is low that there are thermal conductivities in phase transition process for solving single medium paraffin, and volume change is big
The problem of.
The first object of the present invention is to provide a kind of composite phase change heat-accumulation material, including liquid metal and paraffin；Wherein,
The absolute value of the difference of the fusing point of the liquid metal and the melting point of paraffin wax is not more than 5 DEG C.
Wherein, liquid metal is a kind of novel phase-change material.Under unit volume, the heating of liquid metal solid liquid phase and paraffin
Solid liquid phase heating is suitable.Liquid metal has the thermal conductivity much higher than substances such as empty gas and water, paraffin, using liquid metal conduct
Heat absorption-exothermic process can be rapidly completed in heat storage medium；Liquid metal solidification when volume expansion, with paraffin solidification when body
Product reduces on the contrary, being basically unchanged the volume of phase change heat storage material.In addition, the fusing point due to the two is close, the difference of fusing point
Absolute value be not more than 5 DEG C, which will not occur apparent mutually to separate.
Heat-storing material of the invention when in use, when fusing point of the temperature lower than paraffin and liquid metal, paraffin and liquid
Metal sensible heat accumulation of heat；When temperature is higher than the fusing point of paraffin and liquid metal, paraffin and liquid metal phase change accumulation of heat.In addition, by
Higher in the thermal conductivity of liquid metal, the reaction time of accumulation of heat is short.
Preferably, the fusing point of liquid metal is 0-5 DEG C higher than melting point of paraffin wax, and preferably 0-3 DEG C, more preferable 1-2 DEG C.Work as paraffin
Fusing point is heated to be allowed to melt, when the paraffin melted under fusing point is uniformly mixed with the liquid metal of fusing, the lower stone of temperature
Wax can absorb heat from liquid metal, make liquid metal solidification, can more effectively guarantee the constancy of volume of microcapsules.
In order to preferably guarantee the constancy of volume of heat-storing material, in one embodiment, paraffin is wrapped up with graininess
In liquid metal.Wherein, under the premise of guaranteeing liquid metal for parafilm wrap, the paraffin of discrete particles shape can be used as one
A entirety can also be dispersed in liquid metal by injection liquid metal in the form of individual particle shape.That is, the paraffin exists
Molten state is injected in the liquid metal with several droplet-likes, and the paraffin swarms of the droplet-like are at a bulky grain by institute
It states liquid metal package or the paraffin is dispersed in the liquid metal with several graininess.It is herein it is " several " be one
Or it is multiple, multiple is 2 or 2 or more.
In this embodiment, in order to be wrapped in paraffin preferably in liquid metal, the fusing point of liquid metal usually compares
Melting point of paraffin wax is 1-2 DEG C high.When heating paraffin is allowed to melt to fusing point, the paraffin melted under fusing point is wrapped in graininess
When in melting liquid metal, the lower paraffin of temperature can absorb heat from liquid metal, make liquid metal solidification, and being formed internal is paraffin
Liquid, surface are the material of liquid metal solid, and such paraffin can more preferably and be more completely wrapped in liquid metal.
When temperature is lower than paraffin melting point, paraffin and liquid metal sensible heat accumulation of heat；When temperature is lower than higher than melting point of paraffin wax
When the fusing point of liquid metal, wax phase change accumulation of heat, liquid metal sensible heat accumulation of heat, since liquid metal is solid-state, Ke Yi at this time
Guarantee the constancy of volume of heat-storing material under certain degree；When temperature is higher than liquid metal fusing point, paraffin and liquid metal phase
Become accumulation of heat, due to liquid metal volume-diminished, paraffin volume increases, so microcapsules volume is basically unchanged.
Method conventional in the art can be used to prepare in the preparation method of composite phase change heat-accumulation material of the invention.
It is preferred that are as follows: the paraffin of thawing is injected in the liquid metal of the thawing with graininess, obtains mixture, Xiang Suoshu
Lead in mixture inert gas be allowed to be cooled to room temperature to get；
Or using ultrasonic emulsification or stir evenly the paraffin of the liquid metal of thawing and thawing, it obtains
Lead to mixture, in Xiang Suoshu mixture inert gas be allowed to be cooled to room temperature to get.
The access times of liquid leakage and increase heat-storing material in order to prevent, the present invention also provides a kind of composite phase-changes
Accumulation of heat microcapsules, the microcapsules using above-mentioned heat-storing material as core material, meanwhile, further include outer wall materials.The outer wall materials are
Common outer wall materials in phase-transition heat-storage microcapsules field.The usually material of chemical stability, wearability and excellent durability
Material, preferably one of melamine resin, polyureas urea formaldehyde, polyurethane, polymethyl methacrylate or a variety of,
More preferably polymethyl methacrylate.The dosage of outer wall materials can under the premise of guaranteeing that liquid metal and paraffin are wrapped up
To add according to actual needs.After being wrapped up by capsule outer walls, accumulation of heat microcapsules of the invention be can be recycled, and can be used for silk
In the fields such as weaver's industry, building energy conservation.And the accumulation of heat microcapsules without capsule outer walls are usually disposable accumulation of heat microcapsules, can be used
In the fields such as space flight and aviation, submarine.
In order to better ensure that the volume of entire material is basically unchanged under the premise of guaranteeing heating conduction, in the present invention
The volume ratio of paraffin and liquid metal is 1-5:1, preferably 1-3:1.For being free of the heat-storing material of capsule outer walls, paraffin and liquid
The volume ratio of state metal is preferably 1-2:1；For the accumulation of heat microcapsules containing capsule outer walls, the volume ratio of paraffin and liquid metal
Preferably 1-3:1.
In order to make the phase point temperature of material be consistent as far as possible with suitable environment, paraffin is in the preferred embodiment of the invention
Refined paraffin wax and/or semi-refined paraffin wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin, preferably
C27H56、C26H54、C30H62One of or it is a variety of.Usually selecting fusing point is 60 DEG C or so of linear paraffin, such as C27H56。
Liquid metal can be liquid metal common in this field, and specific type and content will be according to melting point of paraffin wax
It determines.It is preferably bismuthino liquid metal, gallium base liquid metal, indium base liquid metal, lead base liquid metal, tinbase liquid in the present invention
One of state metal is a variety of, is distributed according to different types of melting point of paraffin wax, according to adjusting liquid metal simple substance or conjunction
The type or ratio of gold obtain the liquid metal of different melting points, to meet needs.Heat-storing material and accumulation of heat in the present invention is micro-
In capsule be more preferably bismuthino liquid metal, usually select bismuth alloy, such as bismuth, indium, lead and tin alloy, bismuth, indium and tin
Alloy.Preferably Bi32.5In51Sn16.5、Bi49In21Pb18Sn12、Bi30.8In61.7Cd7.5、Bi35In48.6Sn16Zn0.4In one
Kind is a variety of.When selecting fusing point is 60 DEG C or so of linear paraffin paraffin, usually select fusing point in the temperature or so
Bi32.5In51Sn16.5And/or Bi49In21Pb18Sn12。
Heat-storing material or accumulation of heat microcapsules of the invention can be the Common Shape of accumulation of heat microcapsules in this field, in this hair
In bright, the microcapsules that form remains unchanged usually are made as graininess.
In one of the invention more preferably embodiment, composite phase change heat-accumulation material includes bismuthino liquid metal and paraffin；
The fusing point of the bismuthino liquid metal is 1-2 DEG C higher than the melting point of paraffin wax, the volume ratio of the paraffin and the liquid metal
For 1-2:1；Wherein, the paraffin is injected in the liquid metal in molten state with several droplet-likes, the droplet-like
Paraffin swarms are wrapped up at a bulky grain by the liquid metal.Heat-storing material in the embodiment is disposable heat-storing material,
The selected liquid metal with specific fusing point and designated volume ratio can better ensure that the material in heat-accumulating process with paraffin
Constancy of volume, and thermal conductivity with higher, accumulation of heat reaction time are shorter.
In another more preferably embodiment, composite phase-change heat-storage microcapsules include bismuthino liquid metal, paraffin and outer
Wall material, the bismuthino liquid metal uniformly mix the core material for constituting the microcapsules with the paraffin, are wrapped in described outer
In wall material；The fusing point of the liquid metal is 0-3 DEG C higher than the melting point of paraffin wax, the body of the paraffin and the liquid metal
Product is than being 1-3:1.Wherein, outer wall materials are preferably polymethyl methacrylate, and the dosage of outer wall materials is guaranteeing liquid metal
It can be added according to actual needs under the premise of being wrapped up with paraffin.Composite micro-capsule in the embodiment is that can be recycled
Accumulation of heat microcapsules, the selected liquid metal with specific fusing point and designated volume ratio can be better ensured that with paraffin to be stored
The constancy of volume of capsule in thermal process, does not damage capsule outer walls material, and the obtained accumulation of heat microcapsules accumulation of heat reaction time is shorter.
Method conventional in the art can be used to prepare in microcapsules of the invention.In order to preferably keep microcapsules shape
State it is complete, following method can be used to prepare:
The paraffin of thawing is injected in the liquid metal of the thawing with graininess, obtains mixture, Xiang Suoshu mixture
In lead to inert gas be allowed to be cooled to room temperature to get；
Or using ultrasonic emulsification or stir evenly the paraffin of the liquid metal of thawing and thawing, it obtains
Lead to mixture, in Xiang Suoshu mixture inert gas be allowed to be cooled to room temperature to get.
When microcapsules of the invention contain capsule outer walls material, in preparation method further include: be passed through inert gas
Before, the monomer and catalyst of capsule outer walls material are added in Xiang Suoshu mixture, is warming up to the monomer and the catalyst is anti-
The temperature answered.
When capsule outer walls material is polymethyl methacrylate, monomer is methyl methacrylate, and catalyst is sulfuric acid
Potassium, stirring or ultrasonic emulsification 3-10 minute after being warming up to 70 DEG C, until its fully reacting, then logical inert nitrogen gas is cooled to room
Temperature.
Liquid metal paraffin compound phase change heat storage material and microcapsules proposed by the present invention have well solved Dan Jiezhi stone
It is low that there are thermal conductivities in wax phase transition process, the big problem of volume change, and heat-storing material of the invention and microcapsules are stored in sensible heat
Without apparent mutually separation during heat and phase-transition heat-storage, the volume of heat-storing material and microcapsules is held essentially constant, accumulation of heat it is anti-
It is short between seasonable, meet the demand of the accumulation of heat microcapsules of disposable heat-storing material and recycling, aviation can be widely used in
In the fields such as space flight, submarine, silk weaving industry and building energy conservation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to composite phase change heat-accumulation material in the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram according to composite phase-change heat-storage microcapsules in the embodiment of the present invention 4；
Wherein, 1, paraffin；2, liquid metal；3, capsule outer walls.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment 1
A kind of composite phase change heat-accumulation material is present embodiments provided, which includes the paraffin 1C that fusing point is 58 DEG C27H56With
The liquid metal 2Bi that fusing point is 60 DEG C32.5In51Sn16.5, the volume ratio of paraffin and liquid metal is 2:1.In the present embodiment,
Paraffin 1 is wrapped in liquid metal 2 in the form of discrete particles, as shown in Figure 1.
The present embodiment provides the preparation method of above-mentioned material simultaneously, specifically i.e.: liquid metal 2 and paraffin 1 are added respectively
Heat makes both to be fully converted into liquid to 60 DEG C and 58 DEG C；It is again substrate with liquid metal 2, by the paraffin 1 of fusing to disperse
In the form injection liquid metal 2 of particle, mechanical stirring makes the surface of paraffin 1 wrap up liquid metal 2.At this point, temperature is lower
Paraffin 1 can absorb heat from liquid metal 2, solidify liquid metal 2, and being formed internal is 1 liquid of paraffin, and outside is that liquid metal 2 is solid
The heat-storing material of body.Then lead to nitrogen thereto to be cooled to room temperature, obtain the heat-storing material that liquid metal 2 wraps up paraffin 1.Finally
Solid heat storage material after solidification is crushed, graininess heat-storing material is formed.The heat-storing material is disposable heat-storing material.
In actual use, when regenerator temperature is lower than 2 fusing point of paraffin, the 1 sensible heat accumulation of heat of paraffin 2 and liquid metal；Work as storage
When hot temperature reaches 1 fusing point of paraffin and is lower than 2 fusing point of liquid metal, 1 phase-transition heat-storage of paraffin, 2 sensible heat accumulation of heat of liquid metal, due to
Liquid metal 2 is solid-state at this time, it is ensured that the constancy of volume of heat-storing material；When temperature is higher than the fusing point of liquid metal 2, stone
2 phase-transition heat-storage of wax 1 and liquid metal, due to 2 volume-diminished of liquid metal, 1 volume of paraffin increases, so the volume of heat-storing material
It is basically unchanged, container will not be damaged.Simultaneously because the thermal conductivity of liquid metal 2 is higher, therefore the accumulation of heat reaction time is short.
Embodiment 2
A kind of composite phase-change heat-storage microcapsules are present embodiments provided, which includes the paraffin that fusing point is 58 DEG C
1C27H56The liquid metal 2Bi for being 60 DEG C with fusing point32.5In51Sn16.5, the volume ratio of paraffin and liquid metal is 2:1, further includes
Polymethyl methacrylate capsule outer walls material.In the present embodiment, paraffin 1 is wrapped in liquid gold in the form of discrete particles
Belong in 2, is also enclosed with polymethyl methacrylate capsule outer walls material 3 on the surface of liquid metal 2.
The present embodiment provides the preparation method of above-mentioned microcapsules simultaneously, specifically i.e.: liquid metal 2 and paraffin 1 are distinguished
60 DEG C and 58 DEG C are heated to, make both to be fully converted into liquid；It is again substrate with liquid metal 2, by the paraffin 1 of fusing to divide
In the form injection liquid metal 2 of scattered seed, mechanical stirring makes the surface of paraffin 1 wrap up liquid metal 2.To said mixture
Middle 3 material monomer methyl methacrylate of addition capsule outer walls and macro agent potassium sulfate, are warming up to 60 DEG C, mechanical stirring or ultrasound
Then emulsification 5 minutes is led to nitrogen thereto and is cooled to room temperature, obtains the accumulation of heat capsule that liquid metal 2 wraps up paraffin 1.This implementation
The accumulation of heat capsule of example can be effectively prevented the leakage of melt liquid, prevent mutually to separate, and can be recycled.
Embodiment 3
This implementation provides a kind of composite phase change heat-accumulation material, which includes the paraffin 1C that fusing point is 58 DEG C27H56With it is molten
The liquid metal 2Bi that point is 58 DEG C49In21Pb18Sn12, the volume ratio of paraffin and liquid metal is 3:1.In the present embodiment, stone
Wax 1 and liquid metal 2 uniformly mix.
The present embodiment provides the preparation method of above-mentioned heat-storing material simultaneously, specifically i.e.: paraffin 1 and liquid metal 2 is equal
58 DEG C are heated to, makes both to be fully converted to liquid；Then ultrasonic emulsification 5 minutes mix liquid metal 2 with paraffin 1
Uniformly；Then lead to inert nitrogen gas to be cooled to room temperature, obtain liquid metal 2 and the mixed composite phase change heat-accumulation material of paraffin 1.
The heat-storing material is disposable heat-storing material.
In actual use, liquid metal solidification when volume expansion, with paraffin solidification when volume-diminished on the contrary, making
The volume of heat-storing material containing the two mixing is basically unchanged.When temperature is lower than 2 fusing point of paraffin 1 and liquid metal, paraffin 1
With 2 sensible heat accumulation of heat of liquid metal；When temperature is higher than 2 fusing point of paraffin 1 and liquid metal, paraffin 1 and 2 phase transformation of liquid metal store
Heat.Simultaneously because the thermal conductivity of liquid metal 2 is higher, therefore the accumulation of heat reaction time is short.
Embodiment 4
This implementation provides a kind of composite phase-change heat-storage microcapsules, which includes the paraffin 1C that fusing point is 58 DEG C27H56
The liquid metal 2Bi for being 58 DEG C with fusing point49In21Pb18Sn12, it further includes poly- methyl that the volume ratio of paraffin and liquid metal, which is 3:1,
Methyl acrylate capsule outer walls material.In the present embodiment, paraffin 1 and liquid metal 2 uniformly mix, and are wrapped in poly- methyl-prop
In e pioic acid methyl ester capsule outer walls material 3, as shown in Figure 2.
The present embodiment provides the preparation method of above-mentioned microcapsules simultaneously, specifically i.e.: paraffin 1 and liquid metal 2 are added
Heat makes both to be fully converted to liquid to 58 DEG C；Then ultrasonic emulsification 5 minutes mix liquid metal 2 with paraffin 1
It is even；3 material monomer methyl methacrylate of capsule outer walls and catalyst sulfuric acid potassium are added into said mixture, is continuously heating to
It 70 DEG C, carries out mechanical stirring or uses phaco device 5 minutes；Then lead to inert nitrogen gas to be cooled to room temperature, obtain liquid
State metal 2 and the mixed microencapsulated phase change material of paraffin 1.
In actual use, when temperature is lower than 2 fusing point of paraffin 1 and liquid metal, paraffin 1 and 2 sensible heat of liquid metal store
Heat；When temperature is higher than 2 fusing point of paraffin 1 and liquid metal, 2 phase-transition heat-storage of paraffin 1 and liquid metal is contained in capsule outer walls 3
Interior, 1 volume of paraffin increases, and 2 volume of liquid metal reduces, and the volume of microcapsules is held essentially constant.Simultaneously because liquid metal 2
Thermal conductivity it is higher, therefore the accumulation of heat reaction time is short.The accumulation of heat capsule of the present embodiment can be effectively prevented the leakage of melt liquid, prevent
Only occur mutually to separate, can be recycled.
Detection to heat-storing material or accumulation of heat microcapsules progress index of correlation in embodiment 1-4, the results are shown in Table 1.
The testing result of heat-storing material or accumulation of heat microcapsules index of correlation in 1 embodiment 1-4 of table
As shown in Table 1, the heat-storing material in the preferred embodiment of the present invention/accumulation of heat microcapsules thermal coefficient is much larger than single
The thermal coefficient of matter paraffin, cubical expansivity are much smaller than the cubical expansivity of simple substance paraffin.
Finally, the embodiment of composite phase-change heat-storage microcapsules listed by the application is only preferable embodiment to say
Bright technical solution of the present invention, is not intended to limit the scope of the present invention.All within the spirits and principles of the present invention, institute
Any modification, equivalent substitution, improvement and etc. of work, should all be included in the protection scope of the present invention.
Claims (23)
1. a kind of composite phase change heat-accumulation material, which is characterized in that including liquid metal and paraffin；Wherein, the liquid metal
Fusing point is 0-5 DEG C higher than the melting point of paraffin wax；
The volume ratio of the paraffin and the liquid metal is 1-5:1；
The paraffin is wrapped in the liquid metal with graininess.
2. material according to claim 1, which is characterized in that the fusing point of the liquid metal is higher than the melting point of paraffin wax
0-3℃。
3. material according to claim 1, which is characterized in that the fusing point of the liquid metal is higher than the melting point of paraffin wax
1-2℃。
4. material according to claim 1-3, which is characterized in that the volume of the paraffin and the liquid metal
Than for 1-3:1.
5. material according to claim 4, which is characterized in that the volume ratio of the paraffin and the liquid metal is 1-2:
1。
6. -3,5 described in any item materials according to claim 1, which is characterized in that the paraffin is in molten state with several liquid
Drop-wise is injected in the liquid metal, the paraffin swarms of the droplet-like wrapped up at a bulky grain by the liquid metal or
The paraffin is dispersed in the liquid metal with several graininess.
7. -3,5 described in any item materials according to claim 1, which is characterized in that the liquid metal is bismuthino liquid gold
One of category, gallium base liquid metal, indium base liquid metal, lead base liquid metal, tinbase liquid metal are a variety of.
8. material according to claim 4, which is characterized in that the liquid metal is bismuthino liquid metal, gallium base fluid state
One of metal, indium base liquid metal, lead base liquid metal, tinbase liquid metal are a variety of.
9. material according to claim 6, which is characterized in that the liquid metal is bismuthino liquid metal, gallium base fluid state
One of metal, indium base liquid metal, lead base liquid metal, tinbase liquid metal are a variety of.
10. material according to claim 7, which is characterized in that the liquid metal is Bi32.5In51Sn16.5And/or
Bi49In21Pb18Sn12。
11. material according to claim 8 or claim 9, which is characterized in that the liquid metal is Bi32.5In51Sn16.5And/or
Bi49In21Pb18Sn12。
12. -3,5 described in any item materials according to claim 1, which is characterized in that the paraffin be refined paraffin wax and/or
Semi-refined paraffin wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
13. material according to claim 4, which is characterized in that the paraffin is refined paraffin wax and/or half purification stone
Wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
14. material according to claim 6, which is characterized in that the paraffin is refined paraffin wax and/or half purification stone
Wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
15. material according to claim 7, which is characterized in that the paraffin is refined paraffin wax and/or half purification stone
Wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
16. according to the described in any item materials of claim 8-10, which is characterized in that the paraffin be refined paraffin wax and/or
Semi-refined paraffin wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
17. material according to claim 11, which is characterized in that the paraffin is refined paraffin wax and/or half purification stone
Wax, wherein the linear paraffin for being 15-50 containing carbon atom number in the paraffin.
18. material according to claim 12, which is characterized in that contain C in the paraffin27H56、C26H54、C30H62In
One or more linear paraffins.
19. 3-15,17 described in any item materials according to claim 1, which is characterized in that contain C in the paraffin27H56、
C26H54、C30H62One of or a variety of linear paraffins.
20. material according to claim 1, which is characterized in that the material includes bismuthino liquid metal and paraffin；It is described
The fusing point of bismuthino liquid metal is 1-2 DEG C higher than the melting point of paraffin wax, and the volume ratio of the paraffin and the liquid metal is 1-
2:1；Wherein, the paraffin is injected in the liquid metal in molten state with several droplet-likes, the paraffin of the droplet-like
A bulky grain is gathered into be wrapped up by the liquid metal.
21. the preparation method of material described in claim 1, which is characterized in that by the paraffin of thawing in the form of granular
It injects in the liquid metal of the thawing, obtains mixture, lead to inert gas in Xiang Suoshu mixture and be allowed to be cooled to room temperature, i.e.,
?；
Or, the paraffin of the liquid metal of thawing and thawing using ultrasonic emulsification or is stirred evenly, mixed
Object, lead in Xiang Suoshu mixture inert gas be allowed to be cooled to room temperature to get.
22. a kind of composite phase-change heat-storage microcapsules, which is characterized in that the microcapsules are described in any item with claim 1-20
Material is core material, further includes outer wall materials；The outer wall materials be melamine resin, polyureas urea formaldehyde, polyurethane,
One of polymethyl methacrylate is a variety of.
23. microcapsules according to claim 22, which is characterized in that the microcapsules include bismuthino liquid metal, paraffin
And outer wall materials, the bismuthino liquid metal uniformly mix the core material for constituting the microcapsules with the paraffin, are wrapped in institute
It states in outer wall materials；The fusing point of the liquid metal is 0-3 DEG C higher than the melting point of paraffin wax, the paraffin and the liquid metal
Volume ratio be 1-3:1.
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