CN116535869A - Phase-change energy-storage temperature-control capsule and preparation method thereof - Google Patents
Phase-change energy-storage temperature-control capsule and preparation method thereof Download PDFInfo
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- CN116535869A CN116535869A CN202310687483.6A CN202310687483A CN116535869A CN 116535869 A CN116535869 A CN 116535869A CN 202310687483 A CN202310687483 A CN 202310687483A CN 116535869 A CN116535869 A CN 116535869A
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- 239000002775 capsule Substances 0.000 title claims abstract description 93
- 238000004146 energy storage Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000012188 paraffin wax Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 44
- 239000011159 matrix material Substances 0.000 claims description 39
- 239000011148 porous material Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 230000029087 digestion Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000010451 perlite Substances 0.000 claims description 7
- 235000019362 perlite Nutrition 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000006193 liquid solution Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000011232 storage material Substances 0.000 claims description 3
- 239000012782 phase change material Substances 0.000 claims 1
- 229910052875 vesuvianite Inorganic materials 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 26
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2391/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2391/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
The invention discloses a phase-change energy-storage temperature-control capsule and a preparation method thereof, and relates to the technical field of building materials and building energy conservation, wherein the phase-change energy-storage temperature-control capsule comprises a capsule core, a capsule shell and a phase-change filler; the phase change filler is filled in the capsule core, and the capsule shell is formed by spraying a curing agent on the surface of the capsule core and then placing the capsule shell in an ultraviolet curing device for irradiation curing. The porous granular material after paraffin adsorption is used as a capsule core, the photosensitive curing agent is used as a capsule shell, the capsule is prepared into a conventional building material in a compounding way, and when the ambient temperature is raised to the paraffin phase transition temperature in the capsule, the paraffin is converted from a solid state to a liquid state to absorb the ambient heat; when the ambient temperature is lower than the paraffin phase transition temperature, the paraffin is converted from a liquid state to a solid state to release heat to the environment, the capsule controls the ambient temperature through the heat absorption or heat release process of the phase transition filler in the capsule core, and the encapsulation of the capsule shell ensures that the phase transition filler in the capsule shell is not easy to leak and lose during the phase transition.
Description
Technical Field
The invention relates to the technical field of building materials and building energy conservation, in particular to a phase-change energy-storage temperature-control capsule and a preparation method thereof.
Background
The existing building energy-saving heat preservation method mainly comprises an active method and a passive method. The active method is to control the indoor temperature through heating by electric appliances, and the passive method is to block the indoor and outdoor temperature conduction through reducing the thermal performance parameters such as the heat conductivity coefficient of the building envelope material. The application of the phase change filler provides a new idea for energy conservation and temperature control of the building, not only can reduce extra energy consumption caused by active facility temperature control, but also can avoid the requirement of a passive temperature control method on the excessively thick structure of the enclosure member.
Disclosure of Invention
The invention aims to provide a phase-change energy-storage temperature-control capsule and a preparation method thereof, which are used for solving the technical problem of realizing automatic temperature control of a macroscopic building enclosure structure through microcosmic material characteristics and encapsulation;
in order to achieve the above purpose, the present invention provides the following technical solutions:
a phase-change energy-storage temperature-control capsule comprises a capsule core, a capsule shell and a phase-change filler; the phase change filler is filled in the capsule core, and the capsule shell is formed by spraying a curing agent on the surface of the capsule core and then placing the capsule shell in an ultraviolet curing device for irradiation curing.
As a preferable scheme of the capsule core in the technical scheme of the invention, the capsule core comprises a continuous medium, wherein the inside of the continuous medium is of a porous characteristic, and the pores in the continuous medium are filled with phase change filler; the capsule core is made of matrix material particles, the continuous medium provides a certain strength support for the matrix material particles, and the matrix material particles are expanded perlite particles or volcanic rock particles or ceramsite particles with the particle size of 5-25mm.
As a preferable scheme of the capsule shell in the technical scheme of the invention, the capsule shell is a photosensitive curing material, and the material can be rapidly cured and shaped under the condition of a specific purple light source;
as a preferable scheme of the phase change filler in the technical scheme of the invention, the phase change filler is a capsule energy storage material, particularly paraffin, and the phase change temperature is in the range of-10 DEG to 50 ℃;
as a preferable scheme of the curing agent in the technical scheme of the invention, the curing agent comprises photosensitive resin and UV glue, and graphite powder is added into the curing agent;
the invention also comprises a preparation method of the phase-change energy-storage temperature-control capsule, which comprises the following steps,
step one, selecting a matrix material, wherein the matrix material is a light porous material, the light porous material comprises expanded perlite, ceramsite and volcanic rock, the particle size of the light porous material is 5-12mm, the paraffin emulsion is adsorbed by using pores of the matrix material, and the strength support is provided for the capsule by using a continuous medium in particles.
Step two, paraffin with proper phase transition temperature is selected according to the application environment;
and step three, preparing the capsule core in a compounding way, namely placing the matrix particles into a heated and melted paraffin liquid solution for digestion for a certain time to ensure that paraffin in pores of the matrix particles is saturated, screening out matrix materials, placing the matrix materials into a cold temperature environment for solidifying paraffin, wherein the temperature of the cold temperature environment is lower than the phase transition temperature of the paraffin.
And fourthly, packaging the capsule core, spraying a curing agent on the surface of the cured matrix particles, wherein the curing agent comprises 5% of graphite powder, the curing agent comprises photosensitive resin and UV glue, and repeatedly spraying until the mixture is uniform, and then placing the mixture in an ultraviolet curing device for irradiation curing to finally obtain the phase-change energy storage capsule finished product.
Through the technical scheme, the invention has the beneficial effects that:
1. the porous granular material after paraffin adsorption is used as a capsule core, the photosensitive curing agent is used as a capsule shell, the capsule is prepared into a conventional building material in a compounding way, and when the ambient temperature is raised to the paraffin phase transition temperature in the capsule, the paraffin is converted from a solid state to a liquid state to absorb the ambient heat; when the ambient temperature is lower than the paraffin phase transition temperature, the paraffin is converted from a liquid state to a solid state to release heat to the environment, the capsule controls the ambient temperature through the heat absorption or heat release process of the phase transition filler in the capsule core, and the encapsulation of the capsule shell ensures that the phase transition filler in the capsule shell is not easy to leak and lose during the phase transition.
2. The capsule core matrix is flexible to select, and the paraffin phase transition temperature is covered at-10 ℃ to 50 ℃, so that the capsule has wide application range, such as a refrigeration house, a greenhouse and a floor heating, and paraffin and matrix particles with different phase transition temperatures can be selected according to respective temperature requirements and matrix mechanical strength requirements to prepare the energy storage temperature control capsule.
Drawings
FIG. 1 is a schematic diagram of the composition structure of the capsule of the present invention;
FIG. 2 is a schematic diagram showing the change of the boiling time and the energy storage amount of the capsule core according to the present invention;
FIG. 3 is a schematic diagram of the process flow of the capsule preparation of the present invention.
In the figure: 1. capsule core, 101, continuous medium, 102, capillary holes, 2, capsule shell, 3 and phase change filler.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a phase-change energy-storage temperature-control capsule comprises a capsule core 1, a capsule shell 2 and a phase-change filler 3; the phase change filler is filled 3 in the capsule core 1, and the capsule shell 2 is formed by spraying a curing agent on the surface of the capsule core 1 and then placing the capsule shell in an ultraviolet curing device for irradiation curing;
the capsule core 1 comprises a continuous medium 101, wherein the inside of the continuous medium 101 is of a porous characteristic, and capillary holes 102 in the inside of the continuous medium 101 are filled with phase change filler 3; the capsule core 1 is a matrix material particle, the continuous medium 101 provides a certain strength support for the matrix material particle, the matrix material particle is an expanded perlite particle or a volcanic rock particle or a ceramsite particle, and the particle size is 2-25mm;
the capsule shell 2 is a photosensitive curing material, and the material can be rapidly cured and shaped under the condition of a specific purple light source;
the phase change filler is 3 capsules of energy storage material, particularly paraffin, and the phase change temperature ranges from-10 ℃ to 50 ℃;
the curing agent comprises photosensitive resin and UV glue, and graphite powder is added into the curing agent;
referring to fig. 3, a method for preparing a phase-change energy-storage temperature-control capsule comprises the following steps,
step one, selecting a matrix material, wherein the matrix material is a light porous material, the light porous material comprises expanded perlite, ceramsite and volcanic rock, the particle size is 5-12mm, the paraffin emulsion is adsorbed by using pores of the matrix material, the continuous medium in the particles is used for providing strength support for the capsule, the light porous material such as the expanded perlite, the ceramsite and the volcanic rock can be used as the matrix material, and the reasonable particle size is selected according to the thickness of a material layer of an application scene.
Step two, paraffin with proper phase transition temperature is selected according to the application environment; the phase transition temperature is-10 ℃ to 50 ℃, the application environment comprises 18 ℃ to 23 ℃ paraffin wax for a greenhouse, and 40 ℃ to 50 ℃ paraffin wax for a heated kang;
step three, composite preparation of the capsule core, namely placing matrix particles into a heated and melted paraffin liquid solution for digestion for 1 hour, ensuring that paraffin in pores of the matrix particles is saturated, screening out matrix materials, placing the matrix materials into a cold temperature environment for solidifying paraffin, wherein the cold temperature environment temperature is lower than the paraffin phase transition temperature;
and fourthly, packaging the capsule core, spraying a curing agent on the surface of the cured matrix particles, wherein the curing agent comprises 5% of graphite powder, the curing agent comprises photosensitive resin and UV glue, and repeatedly spraying until the mixture is uniform, and then placing the mixture in an ultraviolet curing device for irradiation curing to finally obtain the phase-change energy storage capsule finished product.
Graphite powder, namely heat conduction reinforcing material, 10000 mesh superfine graphite powder;
the energy storage and temperature control device can be used for energy storage and temperature control in various fields such as floor heating, heated kang, indoor wall, greenhouse, refrigeration house, transformer substation, road and the like according to different phase transition temperatures;
the process comprises the following steps:
1. a leaching method is adopted to prepare phase-change particles in a compounding way;
2. a rapid cooling method is adopted to solidify paraffin materials adsorbed in the phase-change particles;
3. curing the capsule shell by an ultraviolet curing method, and encapsulating composite phase change filler matrix particles;
4. the heat conduction enhancement method increases the heat conduction coefficient of the capsule shell and accelerates the heat exchange between the inside and the outside of the capsule;
5. the detection method of the energy storage saturation of the capsule comprises the following steps: referring to fig. 2, porous matrix particles were placed in liquid paraffin for fire digestion, the length of digestion was linearly increased by 15 minutes, and after each digestion, the particles were rapidly cured at negative temperature and weighed until the weight of the test particles was substantially no longer increased, and digestion was stopped, and the optimal energy storage digestion time was determined by the starting position of the energy storage plateau in the experimental data curve.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. The utility model provides a phase transition energy storage accuse temperature capsule which characterized in that: the phase change material is filled in the capsule core, and the capsule shell is formed by spraying a curing agent on the surface of the capsule core and then placing the coated capsule core in an ultraviolet curing device for irradiation curing.
2. The phase-change energy-storage temperature-control capsule of claim 1, wherein: the capsule core comprises a continuous medium, wherein the inside of the continuous medium is of a porous characteristic, and the pores inside the continuous medium are filled with phase change filler.
3. The phase-change energy-storage temperature-control capsule according to claim 2, wherein: the capsule core is made of matrix material particles, the continuous medium provides a certain strength support for the matrix material particles, and the matrix material particles are expanded perlite particles or volcanic rock particles or ceramsite particles with the particle size of 5-25mm.
4. The phase-change energy-storage temperature-control capsule of claim 1, wherein: the capsule shell is made of photosensitive curing materials, and the materials can be rapidly cured and shaped under the condition of a specific purple light source.
5. The phase-change energy-storage temperature-control capsule of claim 1, wherein: the phase change filler is a capsule energy storage material, specifically paraffin, and the phase change temperature ranges from-10 degrees to 50 degrees.
6. The phase-change energy-storage temperature-control capsule of claim 1, wherein: the curing agent comprises photosensitive resin and UV glue, and graphite powder is added into the curing agent.
7. A method of preparing the capsule of any one of claims 1-6, wherein: comprises the steps of,
firstly, selecting a matrix material, wherein the matrix material is a light porous material, the light porous material comprises expanded perlite, ceramsite and vesuvianite, the particle size is 5-12mm, the paraffin emulsion is adsorbed by using pores of the matrix material, and the strength support is provided for the capsule by using a continuous medium in particles;
step two, paraffin with proper phase transition temperature is selected according to the application environment;
step three, composite preparation of the capsule core, namely placing matrix particles into a heated and melted paraffin liquid solution for digestion for a certain time to ensure that paraffin in pores of the matrix particles is saturated, screening out matrix materials, placing the matrix materials into a cold temperature environment for solidifying paraffin, wherein the cold temperature environment temperature is lower than the paraffin phase transition temperature;
and fourthly, packaging the capsule core, spraying a curing agent on the surface of the cured matrix particles, wherein the curing agent comprises 5% of graphite powder, the curing agent comprises photosensitive resin and UV glue, and repeatedly spraying until the mixture is uniform, and then placing the mixture in an ultraviolet curing device for irradiation curing to finally obtain the phase-change energy storage capsule finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687483.6A CN116535869A (en) | 2023-06-12 | 2023-06-12 | Phase-change energy-storage temperature-control capsule and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687483.6A CN116535869A (en) | 2023-06-12 | 2023-06-12 | Phase-change energy-storage temperature-control capsule and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116535869A true CN116535869A (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310687483.6A Pending CN116535869A (en) | 2023-06-12 | 2023-06-12 | Phase-change energy-storage temperature-control capsule and preparation method thereof |
Country Status (1)
| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127395A (en) * | 2010-12-10 | 2011-07-20 | 东南大学 | Paraffin wax phase change energy storage material and preparation method thereof |
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| CN113620637A (en) * | 2021-08-13 | 2021-11-09 | 中国地质大学（北京） | Phase-change energy-storage heat-storage material and preparation method thereof |
| CN114032073A (en) * | 2021-11-22 | 2022-02-11 | 西南科技大学 | Preparation method of slag expanded bead composite phase-change material |
-
2023
- 2023-06-12 CN CN202310687483.6A patent/CN116535869A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127395A (en) * | 2010-12-10 | 2011-07-20 | 东南大学 | Paraffin wax phase change energy storage material and preparation method thereof |
| CN103509526A (en) * | 2012-06-17 | 2014-01-15 | 曹雪娟 | Porous substrate phase-changing heat storage particles and preparation method thereof |
| CN103570311A (en) * | 2013-10-23 | 2014-02-12 | 沈阳建筑大学 | Preparation method of paraffin/expanded perlite phase-change thermal insulation mortar |
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