CN115260993A - MXene stable ionic liquid based phase change emulsion and preparation method thereof - Google Patents
MXene stable ionic liquid based phase change emulsion and preparation method thereof Download PDFInfo
- Publication number
- CN115260993A CN115260993A CN202210764973.7A CN202210764973A CN115260993A CN 115260993 A CN115260993 A CN 115260993A CN 202210764973 A CN202210764973 A CN 202210764973A CN 115260993 A CN115260993 A CN 115260993A
- Authority
- CN
- China
- Prior art keywords
- ionic liquid
- phase
- mxene
- change
- phase change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002608 ionic liquid Substances 0.000 title claims abstract description 82
- 239000000839 emulsion Substances 0.000 title claims abstract description 58
- 230000008859 change Effects 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000004945 emulsification Methods 0.000 title claims description 4
- 239000012782 phase change material Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000004781 supercooling Methods 0.000 claims abstract description 9
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 6
- 235000021355 Stearic acid Nutrition 0.000 claims description 65
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 65
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 65
- 239000008117 stearic acid Substances 0.000 claims description 65
- 238000002844 melting Methods 0.000 claims description 35
- 230000008018 melting Effects 0.000 claims description 35
- 229910009819 Ti3C2 Inorganic materials 0.000 claims description 19
- IQQRAVYLUAZUGX-UHFFFAOYSA-N 1-butyl-3-methylimidazolium Chemical compound CCCCN1C=C[N+](C)=C1 IQQRAVYLUAZUGX-UHFFFAOYSA-N 0.000 claims description 13
- -1 1-butyl-3 methylimidazolium tetrafluoroborate Chemical compound 0.000 claims description 8
- RVEJOWGVUQQIIZ-UHFFFAOYSA-N 1-hexyl-3-methylimidazolium Chemical compound CCCCCCN1C=C[N+](C)=C1 RVEJOWGVUQQIIZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 claims description 2
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 claims description 2
- 229910019762 Nb4C3 Inorganic materials 0.000 claims description 2
- INDFXCHYORWHLQ-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1-butyl-3-methylimidazol-3-ium Chemical class CCCCN1C=C[N+](C)=C1.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F INDFXCHYORWHLQ-UHFFFAOYSA-N 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 16
- 239000003995 emulsifying agent Substances 0.000 abstract description 7
- 239000013529 heat transfer fluid Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 239000002667 nucleating agent Substances 0.000 abstract description 2
- 238000001338 self-assembly Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 33
- 239000002245 particle Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- 238000009210 therapy by ultrasound Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 1
- 238000000089 atomic force micrograph Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001938 differential scanning calorimetry curve Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
-
- 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)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention relates to MXene stable ionic liquid based phase change emulsion and a preparation method thereof, belonging to the field of new materials. A preparation method of MXene stable ionic liquid based phase change emulsion comprises the steps of adding 3-30% of phase change material and 0.01-0.5% of two-dimensional layered material MXene into the balance of ionic liquid according to mass percent, heating until the phase change material is completely melted, and emulsifying to obtain the MXene stable ionic liquid based phase change emulsion. MXene is used as an emulsifier and a nucleating agent, and self-assembly is carried out on a two-phase interface of the ionic liquid and the phase-change material, so that the dual purposes of improving the stability of the ionic liquid-based phase-change emulsion and reducing the supercooling degree of the ionic liquid-based phase-change emulsion are achieved; the ionic liquid-based phase-change emulsion has the advantages of constant phase-change temperature, large phase-change latent heat and the like in the phase-change process of the phase-change material, and the specific heat capacity of the heat-transfer fluid is obviously improved; the ionic liquid has wide liquid temperature range and good thermal stability, and widens the working temperature range of the ionic liquid-based phase-change emulsion.
Description
Technical Field
The invention relates to MXene stable ionic liquid based phase change emulsion and a preparation method thereof, belonging to the field of new materials.
Background
The latent heat type functional thermal fluid obtained by introducing the phase change material into the heat transfer fluid can improve the apparent specific heat capacity and the energy storage density of the heat transfer fluid by storing or releasing a large amount of heat when the phase change material undergoes phase change, thereby realizing the enhanced heat transfer. Latent heat type functional thermal fluids are generally classified into ice slurries, hydrate slurries, phase-change microcapsule slurries and phase-change emulsions. The phase-change emulsion has the advantages of high energy storage density, simple preparation method, low cost, negligible thermal resistance of an emulsifier protective layer and the like, and is used as a novel heat collecting fluid to help improve the heat transfer performance and the heat storage performance of the heat collecting fluid. The phase-change emulsion is a thermodynamically unstable system, liquid drops have the tendency of automatic coalescence, and the phase-change emulsion has larger supercooling degree under the condition of limited area, so that the heat storage capacity of the phase-change emulsion in a working temperature range is reduced. In addition, the reported phase-change emulsions all use water as a continuous phase, which limits their application in medium and high temperature fields. Therefore, preparing a phase-change emulsion with good stability, low supercooling degree, high specific heat capacity and high temperature resistance still faces a great challenge.
MXene is a novel two-dimensional transition metal carbide, nitride or carbonitride, contains abundant functional groups (-OH, -O, -F and the like) on the surface, has good hydrophilicity, thermal conductivity, light absorption and emulsifier characteristics, and has attracted the attention of researchers in recent years. MXene is subjected to interfacial modification through a cationic emulsifier or a cationic polymer to reduce the interfacial tension, and the obtained modified MXene can be directionally self-assembled at an oil-water interface to form a stable oil-in-water Pickering emulsion[1,2]. Although MXene has been studied as a solid emulsifier to prepare an oil-in-water Pickering emulsion, many challenges are still faced when an ionic liquid with a wide liquid temperature range and good thermal stability is used as a continuous phase to construct a high-performance ionic liquid-based phase-change emulsion.
Reference to the literature
[1]BIAN R,LIN R,WANG G,et al.3D assembly of Ti3C2-MXene directed by water/oil interfaces[J].Nanoscale,2018,10(8):3621-5.
[2]Self-Assembly of MXene-Surfactants at Liquid–Liquid Interfaces:From Structured Liquids to 3D Aerogels[J].Angewandte Chemie International Edition,2019,58(50):18171-6.
Disclosure of Invention
In view of one or more problems of the above technologies, an object of the present invention is to provide an ionic liquid-based phase change emulsion stabilized by MXene, a two-dimensional layered material, and a method for preparing the same. The MXene is used as a solid emulsifier, the ionic liquid is used as a continuous phase, the stearic acid phase-change material is used as a disperse phase, and the ionic liquid-based phase-change emulsion with good stability, low supercooling degree, large specific heat capacity and high temperature resistance and stable two-dimensional layered material MXene is prepared through design.
A preparation method of MXene stable ionic liquid based phase change emulsion comprises the following specific steps: adding 3-30% of phase-change material and 0.01-0.5% of two-dimensional layered material MXene into the balance of ionic liquid according to the mass percentage, heating until the phase-change material is completely melted, and emulsifying to obtain the ionic liquid-based phase-change emulsion with stable MXene.
In the technical scheme, the sum of the mass percentages of the phase-change material, the two-dimensional layered material MXene and the ionic liquid is 100%.
Preferably, 10-20% of phase change material and 0.05% of two-dimensional layered material MXene are added into the balance of ionic liquid.
In the above technical solution, the heating is preferably performed by oil bath heating.
In the above technical solution, the emulsification is preferably performed in a cell disruptor.
Further emulsifying for 3-20 min by 100-800W ultrasonic power to obtain MXene stable ionic liquid base phase-change emulsion.
Further preferably, the ultrasonic power is 300-600W, and the emulsifying time is 5-15 min.
In the technical scheme, the phase-change material is preferably fatty acid or aliphatic hydrocarbon with the phase-change melting temperature of 50-90 ℃ and the phase-change latent heat of 150-260J/g.
Further, the phase change material is preferably stearic acid with a phase change melting temperature of 70 ℃.
Further, the phase change material is preferably aliphatic hydrocarbon with a phase change melting temperature of 50-90 ℃.
Most preferably, the phase change material is RT82 produced by RUBITHERM or paraffin wax with a melting point of 62 ℃.
In the above technical solution, preferably, the two-dimensional layered material MXene is Ti3C2、Ti2C、Mo3C2、Nb4C3、Nb2C.
In the technical scheme, the ionic liquid 1-butyl-3 methylimidazolium tetrafluoroborate [ BMIM ] is preferably selected]BF41-Ethyl-3-methylimidazolium tetrafluoroborate [ EMIm ]][BF4]1-hexyl-3-methylimidazolium tetrafluoroborate [ HMIm][BF4]1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide salt [ HMim][NTf2]Or N-butylpyridinium tetrafluoroborate [ BPy ]][BF4]One kind of (1).
Another object of the present invention is to provide MXene stable ionic liquid based phase change emulsions made by the above process.
The MXene stable ionic liquid based phase change emulsion has the working temperature of-70-300 ℃, the latent heat of phase change of 5-70J/g, the melting temperature of 60-90 ℃, the solidification temperature of 50-90 ℃ and the supercooling degree of less than 4 ℃.
The beneficial effects of the invention are as follows: the invention adopts a novel two-dimensional layered material MXene as an emulsifier and a nucleating agent, and self-assembles at the two-phase interface of the ionic liquid and the phase-change material, thereby achieving the dual purposes of simultaneously improving the stability of the ionic liquid-based phase-change emulsion and reducing the supercooling degree of the ionic liquid-based phase-change emulsion; the ionic liquid-based phase change emulsion has the advantages of constant phase change temperature, large phase change latent heat and the like in the phase change process of the phase change material, and the specific heat capacity of the heat transfer fluid is obviously improved; the ionic liquid has wide liquid temperature range and good thermal stability, and the working temperature range of the ionic liquid-based phase-change emulsion is widened; the preparation process is simple and the cost is low.
Drawings
FIG. 1 is an atomic force microscope image of a 20wt% stearic acid/ionic liquid phase change emulsion prepared in example 1 of the present invention.
FIG. 2 is a schematic diagram of the droplet size distribution of 15wt% stearic acid/ionic liquid phase-change emulsion prepared in example 2 of the present invention, wherein the average particle size of the droplets is 507.0nm. The inset is a sample object picture: a is a freshly prepared sample and B is a sample after standing at room temperature for 7 days. The sample did not delaminate significantly indicating good dispersion stability.
FIG. 3 is a DSC curve of a 15wt% stearic acid/ionic liquid phase change emulsion made in accordance with example 2 of the present invention. Wherein the stearic acid mass fraction is 15wt%, and the phase-change melting enthalpy is 23.3J/g; the melting temperature is 69.6 ℃, the solidification temperature is 67.3 ℃, and the supercooling degree is smaller (69.6-67.3 =2.3 ℃).
FIG. 4 is a plot of the apparent specific heat capacity of a 15wt% stearic acid/ionic liquid phase change emulsion prepared in example 2 of the present invention and an ionic liquid. Wherein the highest apparent specific heat capacity of the 15wt% stearic acid/ionic liquid phase-change emulsion is 6.36J/(g.K), which is 4.24 times of the highest apparent specific heat capacity of the ionic liquid.
Detailed Description
The following non-limiting examples are presented to enable those of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.
The test methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
Example 1
Mixing Ti3C2Phase MXene and stearic acid with melting temperature 70.0 deg.C [ BMIM ]]BF4In an ionic liquid of which Ti is3C2And 0.05wt% and 20wt% of stearic acid respectively, and the balance of ionic liquid, heating at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 5min by adopting a cell crusher at 400W ultrasonic power to prepare the stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 20wt%, wherein the melting enthalpy is 31.4J/g, and the average particle size of liquid drops is 529.1nm.
Example 2
Mixing Ti3C2Phase MXene and stearic acid with melting temperature 70.0 deg.C [ BMIM ]]BF4In an ionic liquid of which Ti3C2And stearic acid 0.05wt% and 15wt%, respectively, and ionic liquid in balance, heating at 90 deg.C until stearic acid is completely melted, and pulverizing with cell pulverizer at 4 wt%Performing ultrasonic treatment at 00W ultrasonic power for 10min to obtain stearic acid/ionic liquid phase-change emulsion with stearic acid content of 15wt%, wherein the average particle size of liquid drops is 507.0nm, and the sample does not obviously delaminate after standing for 7 days, so that the dispersion stability is good; 15wt% stearic acid/ionic liquid phase-change emulsion has the melting temperature of 69.6 ℃, the solidification temperature of 67.3 ℃ and smaller supercooling degree (69.6-67.3 =2.3 ℃); the melting enthalpy is 23.3J/g, and the highest apparent specific heat capacity is 6.36J/(g.K) which is 4.24 times of the highest apparent specific heat capacity of the ionic liquid.
Example 3
Mixing Ti3C2Phase MXene and stearic acid with melting temperature 70.0 deg.C [ BMIM ]]BF4In an ionic liquid of which Ti3C2And 0.03wt% and 15wt% of stearic acid respectively in percentage by mass, and the balance of ionic liquid, heating the mixture at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 10min at 400W ultrasonic power by using a cell crusher to prepare stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy of the emulsion is 17.5J/g, and the average particle size of liquid drops is 711.2nm.
Example 4
Mixing Ti3C2Phase MXene and stearic acid with melting temperature 70.0 deg.C [ BMIM ]]BF4In an ionic liquid of which Ti is3C2And 0.07wt% and 15wt% of stearic acid respectively, and the balance of ionic liquid, heating at 90 ℃ until the stearic acid is completely melted, and performing ultrasonic treatment for 10min by using a cell crusher at 400W ultrasonic power to prepare the stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy is 21.9J/g, and the average particle size of liquid drops is 482.3nm.
Example 5
Mixing Ti3C2Phase MXene and stearic acid with melting temperature 70.0 deg.C [ BMIM ]]BF4In an ionic liquid of which Ti is3C2And stearic acid with the mass fraction of 0.05wt% and 15wt% respectively, and the balance of ionic liquid, heating at 90 ℃ until the stearic acid is completely melted, carrying out ultrasonic treatment for 10min at 300W ultrasonic power by using a cell crusher to prepare stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy is 22.0J/g,the average particle size of the droplets was 580.2nm.
Example 6
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti is3C2And 0.05wt% and 15wt% of stearic acid respectively in percentage by mass, and the balance of ionic liquid, heating the mixture at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 5min by using a cell crusher at 500W ultrasonic power to prepare stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy of the emulsion is 22.4J/g, and the average particle size of liquid drops is 493.8nm.
Example 7
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti3C2And 0.05wt% and 15wt% of stearic acid respectively in percentage by mass, and the balance of ionic liquid, heating the mixture at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 5min by adopting a cell crusher at 400W ultrasonic power to prepare stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy of the emulsion is 20.9J/g, and the average particle size of liquid drops is 532.1nm.
Example 8
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti is3C2And 0.05wt% and 15wt% of stearic acid respectively, and the balance of ionic liquid, heating at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 15min by adopting a cell crusher at 400W ultrasonic power to prepare the stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy is 22.7J/g, and the average particle size of liquid drops is 487.7nm.
Example 9
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti3C2And stearic acid 0.05wt% and 15wt%, respectively, and ionic liquid in balance, heating at 85 deg.C until stearic acid is completely melted, and pulverizing with cell pulverizerAnd (3) carrying out ultrasonic treatment at 400W for 5min to prepare the stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 15wt%, wherein the melting enthalpy of the emulsion is 22.3J/g, and the average particle size of liquid drops is 498.5nm.
Example 10
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti3C2And 0.05wt% and 5wt% of stearic acid respectively, and the balance of ionic liquid, heating at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 5min by using a cell crusher at 400W ultrasonic power to prepare the stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 5wt%, wherein the melting enthalpy is 7.3J/g, and the average particle size of liquid drops is 433.0nm.
Example 11
Mixing Ti3C2Phase MXene and stearic acid with a melting temperature of 70.0 ℃ addition [ BMIM]BF4In an ionic liquid of which Ti3C2And 0.05wt% and 10wt% of stearic acid respectively, and the balance of ionic liquid, heating the mixture at 90 ℃ until the stearic acid is completely melted, and carrying out ultrasonic treatment for 5min by using a cell crusher at 400W ultrasonic power to prepare stearic acid/ionic liquid phase-change emulsion with the stearic acid content of 10wt%, wherein the melting enthalpy of the emulsion is 13.2J/g, and the average particle size of liquid drops is 449.4nm.
The above embodiments are merely provided to help understand the method and core principle of the present invention, and the main steps and embodiments of the present invention are described in detail by using specific examples. To those skilled in the art, the various conditions and parameters may be varied as desired in a particular implementation in accordance with the principles of the invention, and in view of the foregoing, the description is not to be taken as limiting the invention.
Claims (10)
1. A preparation method of MXene stable ionic liquid based phase change emulsion is characterized in that,
adding 3-30% of phase-change material and 0.01-0.5% of two-dimensional layered material MXene into the balance of ionic liquid according to the mass percentage, heating until the phase-change material is completely melted, and emulsifying to obtain the ionic liquid-based phase-change emulsion with stable MXene.
2. The method of claim 1, wherein the phase change material is a fatty acid or an aliphatic hydrocarbon having a phase change melting temperature of 50 to 90 ℃ and a latent heat of phase change of 150 to 260J/g.
3. The method of claim 2, wherein the phase change material is stearic acid having a phase change melting temperature of 70 ℃.
4. The method of claim 2, wherein the phase change material is an aliphatic hydrocarbon having a phase change melting temperature of 50 to 90 ℃.
5. The method according to claim 1, wherein the phase change material is RT82 produced by RUBITHERM or paraffin wax having a melting point of 62 ℃.
6. The method of claim 1, wherein the two-dimensional layered material MXene is Ti3C2、Ti2C、Mo3C2、Nb4C3、Nb2C.
7. The method of claim 1, wherein the ionic liquid is 1-butyl-3 methylimidazolium tetrafluoroborate [ BMIM [ ]]BF41-ethyl-3-methylimidazolium tetrafluoroborate [ EMIm][BF4]1-hexyl-3-methylimidazolium tetrafluoroborate [ HMim ]][BF4]1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide salt [ HMim][NTf2]Or N-butylpyridinium tetrafluoroborate [ BPy ]][BF4]One kind of (1).
8. The method of claim 1, wherein the MXene-stable ionic liquid-based phase-change emulsion is obtained by emulsifying with 100-800W ultrasonic power for 3-20 min.
9. The method according to claim 8, wherein the ultrasonic power is 300-600W and the emulsification time is 5-15 min.
10. The MXene stable ionic liquid based phase change emulsion prepared by the method of any one of claims 1 to 9, wherein the MXene stable ionic liquid based phase change emulsion has a working temperature of-70 to 300 ℃, a latent heat of phase change of 5 to 70J/g, a melting temperature of 60 to 90 ℃, a solidification temperature of 50 to 90 ℃ and a supercooling degree of less than 4 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764973.7A CN115260993B (en) | 2022-06-29 | 2022-06-29 | MXene stable ionic liquid-based phase-change emulsion and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764973.7A CN115260993B (en) | 2022-06-29 | 2022-06-29 | MXene stable ionic liquid-based phase-change emulsion and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115260993A true CN115260993A (en) | 2022-11-01 |
| CN115260993B CN115260993B (en) | 2024-06-07 |
Family
ID=83762878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210764973.7A Active CN115260993B (en) | 2022-06-29 | 2022-06-29 | MXene stable ionic liquid-based phase-change emulsion and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115260993B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105622959A (en) * | 2016-01-22 | 2016-06-01 | 东莞市天尚太阳能有限公司 | Paraffin phase-change emulsion and preparation process thereof |
| CN105944581A (en) * | 2016-05-16 | 2016-09-21 | 辽宁大学 | Anion responsive Pickering emulsion as well as preparation method and application thereof |
| CN113214795A (en) * | 2021-01-21 | 2021-08-06 | 中国科学院过程工程研究所 | Preparation method of ionic liquid phase-change microcapsule |
| CN113462364A (en) * | 2021-07-01 | 2021-10-01 | 东莞理工学院 | Two-dimensional material MXene stable water-based phase-change emulsion and preparation method thereof |
-
2022
- 2022-06-29 CN CN202210764973.7A patent/CN115260993B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105622959A (en) * | 2016-01-22 | 2016-06-01 | 东莞市天尚太阳能有限公司 | Paraffin phase-change emulsion and preparation process thereof |
| CN105944581A (en) * | 2016-05-16 | 2016-09-21 | 辽宁大学 | Anion responsive Pickering emulsion as well as preparation method and application thereof |
| CN113214795A (en) * | 2021-01-21 | 2021-08-06 | 中国科学院过程工程研究所 | Preparation method of ionic liquid phase-change microcapsule |
| CN113462364A (en) * | 2021-07-01 | 2021-10-01 | 东莞理工学院 | Two-dimensional material MXene stable water-based phase-change emulsion and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王瑞: "LCST型温敏性离子液体参与构筑的（类）微乳液体系的结构及性质研究", 万方学位论文, pages 1 - 68 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115260993B (en) | 2024-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Silica encapsulation of n-octadecane via sol–gel process: A novel microencapsulated phase-change material with enhanced thermal conductivity and performance | |
| Zhu et al. | Graphene/SiO2/n-octadecane nanoencapsulated phase change material with flower like morphology, high thermal conductivity, and suppressed supercooling | |
| JP6054814B2 (en) | Paraffin-based latent heat storage material composition and use of paraffin-based composition as latent heat storage material | |
| Song et al. | Microencapsulated capric–stearic acid with silica shell as a novel phase change material for thermal energy storage | |
| CN103805143B (en) | Phase-change material microcapsule with aromatic odor and preparation method thereof | |
| Schalbart et al. | Formation of tetradecane nanoemulsion by low-energy emulsification methods | |
| Fu et al. | Confined crystallization of binary n-alkane mixtures: stabilization of a new rotator phase by enhanced surface freezing and weakened intermolecular interactions | |
| US9972412B2 (en) | Cellulose capsules | |
| Zeng et al. | Preparation, morphology and thermal properties of microencapsulated palmitic acid phase change material with polyaniline shells | |
| AU2012334406A1 (en) | Mixture for thermal energy storage and device for heat storage and release using said mixture | |
| CN103170289A (en) | Method for preparing microcapsule phase change material by using composite emulsifier | |
| CN113462364B (en) | Two-dimensional material MXene stable water-based phase-change emulsion and preparation method thereof | |
| Gui et al. | High-performance phase change material capsule by Janus particle | |
| Park et al. | Kinetically Controlled Polymorphic Superstructures of Pyrene‐Based Asymmetric Liquid Crystal Dendron: Relationship Between Hierarchical Superstructures and Photophysical Properties | |
| CN115260993B (en) | MXene stable ionic liquid-based phase-change emulsion and preparation method thereof | |
| US20090291309A1 (en) | Material Containing Microcapsules, In Particular Phase-Changing Materials | |
| CN103937276B (en) | Low temperature sensitization special type Wax special and preparation method thereof | |
| Gao et al. | Phase transition behavior of a series of even n-alkane C n/C n+ 2 mixtures confined in microcapsules: From total miscibility to phase separation determined by confinement geometry and repulsion energy | |
| Pholsrimuang et al. | Preparation of high performance copolymer microcapsule encapsulated heat storage material without supercooling | |
| JP6054813B2 (en) | Paraffin-based latent heat storage material composition and use of paraffin-based composition as latent heat storage material | |
| Xiaofeng et al. | Hyperbranched polyester‐modified montmorillonite: a novel phase change material for energy storage | |
| Pourmohamadian et al. | Preparation of SrTiO 3-microencapsulated palmitic acid by means of a sol–gel approach as thermal energy storage materials | |
| Pourmohamadian et al. | Experimental study of the thermal properties of microencapsulated palmitic acid composites with CuCO3 shell as thermal energy storage materials | |
| Zhong et al. | Study on thermophysical properties of C7∼ C9 binary alkane PCM and preparation of anti-volatile emulsion template for cryogenic thermal energy storage | |
| Lu et al. | Modifications of Microencapsulated Phase Change Materials: Supercooling Suppression, Thermal Conductivity Enhancement And Stability Improvement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |