CN102888211A - Composite shape-stabilized phase-change material and preparation method thereof - Google Patents
Composite shape-stabilized phase-change material and preparation method thereof Download PDFInfo
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- CN102888211A CN102888211A CN2012103556496A CN201210355649A CN102888211A CN 102888211 A CN102888211 A CN 102888211A CN 2012103556496 A CN2012103556496 A CN 2012103556496A CN 201210355649 A CN201210355649 A CN 201210355649A CN 102888211 A CN102888211 A CN 102888211A
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- 239000012782 phase change material Substances 0.000 title claims abstract description 91
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000839 emulsion Substances 0.000 claims abstract description 51
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000008859 change Effects 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 229920000767 polyaniline Polymers 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 29
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 13
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 10
- 239000000194 fatty acid Substances 0.000 claims description 10
- 229930195729 fatty acid Natural products 0.000 claims description 10
- 150000004665 fatty acids Chemical class 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000013543 active substance Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 5
- 235000021314 Palmitic acid Nutrition 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 4
- IFYDZTDBJZWEPK-UHFFFAOYSA-N alpha-hydroxyhexacosanoic acid Natural products CCCCCCCCCCCCCCCCCCCCCCCCC(O)C(O)=O IFYDZTDBJZWEPK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims description 4
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 claims description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- 235000021357 Behenic acid Nutrition 0.000 claims description 2
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 claims description 2
- 235000021353 Lignoceric acid Nutrition 0.000 claims description 2
- CQXMAMUUWHYSIY-UHFFFAOYSA-N Lignoceric acid Natural products CCCCCCCCCCCCCCCCCCCCCCCC(=O)OCCC1=CC=C(O)C=C1 CQXMAMUUWHYSIY-UHFFFAOYSA-N 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 229940116226 behenic acid Drugs 0.000 claims description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 2
- 229940033355 lauric acid Drugs 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- QZZGJDVWLFXDLK-UHFFFAOYSA-N tetracosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCC(O)=O QZZGJDVWLFXDLK-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 abstract description 27
- 238000004146 energy storage Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 6
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- 239000007787 solid Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 150000004668 long chain fatty acids Chemical group 0.000 abstract 3
- 238000004378 air conditioning Methods 0.000 abstract 1
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- 239000011521 glass Substances 0.000 abstract 1
- 239000003999 initiator Substances 0.000 abstract 1
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- 239000004094 surface-active agent Substances 0.000 abstract 1
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- 230000009466 transformation Effects 0.000 description 7
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- 239000004160 Ammonium persulphate Substances 0.000 description 5
- 235000019395 ammonium persulphate Nutrition 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a composite shape-stabilized phase-change material and a preparation method thereof. In particular to a composite shape-stabilized phase change material which has certain phase change latent heat and is still in a solid state and stable in shape when the temperature is higher than the phase change temperature, wherein the skeleton material is polyaniline, and the phase change material playing the role of latent heat storage is long-chain fatty acid. The latent heat of phase change of the composite shape-stabilized phase change material can be adjusted according to the requirement, so that the dosage of the long-chain fatty acid can be adjusted within the range of 33-172J/g. The preparation method comprises the following steps: 1) dispersing long-chain fatty acid organic phase change materials and aniline into water under the action of a surfactant to form emulsion; 2) adding an initiator at 0-25 ℃ to initiate the polymerization reaction of aniline; 3) and after the reaction is finished, filtering, washing and drying to obtain the composite shape-stabilized phase change material. The shape-stabilized phase change material prepared by the method has the advantages of simple preparation process, low cost, solid state maintenance and stable shape when the temperature is higher than the phase change point, and can be widely used in various occasions such as solar heat utilization, intelligent automatic air-conditioning buildings, glass greenhouses, phase change energy storage type air conditioners, temperature control devices and the like.
Description
Technical field
The present invention relates to shaping phase-change material and preparation method thereof, a kind of specifically have certain latent heat of phase change, and all be composite shape-setting phase-change material of solid-state and dimensionally stable and preparation method thereof when temperature is below or above its transformation temperature.
Background technology
The energy is the basis of human survival and social development, and the utilizable energy of people can be divided into two classes at present: fossil energy and renewable energy source.Wherein fossil energy has accounted for the overwhelming majority of the human used energy.Along with the development of society, people to the demand of the energy also at rapid growth.Energy dilemma has become one of main factor of restriction social development.So people invest energy-conservation and renewable energy source domain to sight one after another.In people's productive life activity, the final type of service overwhelming majority of energy is heat energy.Therefore, the storage of heat energy just becomes an important research field energy-conservation and the exploitation renewable energy source.Phase change material undergoes phase transition between two-phase by material and absorbs or discharge a large amount of heat energy, thereby plays the effect of heat energy storage.Therefore, phase change material has caused people's broad interest as the basic substance of thermal energy storage.In addition, the many energy forms in actual production and life, as the valley period power of sun power, industrial exhaust heat, used heat and electrical network can etc., all exist a time difference between the supply and demand.Great waste will be caused if these energy storage can not be got up.And use phase change material these energy can be stored with the form of heat energy first, and then stable supply people use in needs, for energy-conservation and exploitation renewable energy source provide an easily approach.Phase change material is absorbing or is discharging heat energy and in the process that undergoes phase transition, and the temperature of itself is almost constant or change very littlely, so phase change material can also be by in the temperature control devices field.
Most study in the phase change material, the source is the widest, price is the most cheap, tool actual application prospect be solid-liquid phase change material, it changes to realize the storage of heat energy by material between solid, liquid two-phase.But solid-liquid phase change material exists serious problems, and namely material in use can be repeatedly exists with the form of liquid, so must solve the encapsulation of the materials problem, causes the very inconvenience of practical application of material.For this reason, investigators have proposed to be made into the way of shaping phase-change material.When temperature was higher than its transformation temperature, shaping phase-change material still showed as solid-state and dimensionally stable on macroscopic view, thereby had solved the encapsulation difficult problem of phase change material.In addition, solid-liquid phase change material is carried out will adding various fillers when modification is advanced, and there is the effect that can cause inevitably filler to separate with phase change material and lose modification in the form with liquid that phase change material in use repeats.Propping material network in the shaping phase-change material can stop filler to separate with phase change material, plays the effect of stable material performance.Therefore, shaping phase-change material has become the study hotspot of phase-change heat-storage material.
The history of the existing recent two decades of the research of shaping phase-change material.People make and in all sorts of ways, utilize multiple starting material, prepared multiple shaping phase-change material, summed up two classes: the first kind is solid-liquid phase change material to be adsorbed in the solid porous materials such as polynite and to obtain, there is not pressure-bearing in this type of shaping phase-change material, easily leaks, and the propping material range of choice is narrow, the hole utilization ratio is low, the deficiencies such as anisotropic heat conductivity; Equations of The Second Kind be with solid-liquid phase change material by coating or the method for soft or hard block is encapsulated in the polymer propping material and obtains, these type of shaping phase-change material wide material sources are difficult for leaking, the volume energy storage density is high, the heat conductivility isotropy is convenient to use.
Polyaniline is a class conducting polymer composite, and it has good environmental stability and thermostability, and its preparation process is simple, can be used as a kind of good framework material and is applied to the shaping phase-change material field.But have not yet to see the report of polyaniline involved in the present invention/fatty acid shaping phase-change material.
Summary of the invention
The invention provides a kind of new pulverous composite shape-setting phase-change material and preparation method thereof.This composite shape-setting phase-change material is take polyaniline as framework material, and longer chain fatty acid is phase-change heat-storage material, can adjust as required the consumption of longer chain fatty acid and adjust its phase-change thermal storage ability.The preparation method of this composite shape-setting phase-change material is simple, and raw material is easy to get, and is a kind of good shaping phase-change material.
For achieving the above object, the present invention takes following technical scheme.
A kind of pulverous composite shape-setting phase-change material, its framework material is polyaniline, the phase change material that plays the effect of latent heat heat accumulation is longer chain fatty acid; When temperature was higher than the longer chain fatty acid fusing point, this composite shape-setting phase-change material outward appearance still was solid-state and dimensionally stable; The consumption that the latent heat of phase change of this composite shape-setting phase-change material can be adjusted longer chain fatty acid as required makes it adjustable in 33～172 J/g scopes.
Described phase change material is a kind of in sad, capric acid, laurostearic acid, TETRADECONIC ACID, palmitic acid, stearic acid, 20 acid, behenic acid, tetracosanoic acid or the hydroxyhexacosanoic acid; Described tensio-active agent is Sodium dodecylbenzene sulfonate or cetyl trimethylammonium bromide.
Described composite shape-setting phase-change material prepares as follows: under the temperature that is higher than 5～20 ℃ of phase change material fusing points, with phase change material stir and the effect of tensio-active agent under be distributed to and form emulsion in the water; Add again aniline and concentrated hydrochloric acid or only add aniline, then continue dispersed with stirring and become stable emulsion, this emulsion under agitation is cooled to 0～25 ℃ and keep this temperature, then under agitation add ammonium persulfate aqueous solution and cause the polyreaction of aniline, react 2～12 hours by filter, washing also drying obtain composite shape-setting phase-change material.
The content of phase change material is the 20-90% of phase change material and aniline quality sum in the described composite shape-setting phase-change material; The content of water is 30～35 times (mass ratioes) of organic phase change material and aniline consumption sum in the described stable emulsion, the consumption of tensio-active agent is 0.06～5%(mass ratio of institute's water consumption), the consumption of concentrated hydrochloric acid is 0.8～1.2%(volume ratio of institute's water consumption).
Described with organic phase change material stir and the effect of tensio-active agent under be distributed to that to form the emulsion required time in the water be 1～2 hour, to become the stable emulsion required time be 0.5～1 hour to the continuation dispersed with stirring after adding aniline with concentrated hydrochloric acid or only adding aniline.
The ammonium persulfate aqueous solution concentration of described adding is 0.075～0.59g/mL; Add-on is 7.8～12%(volume ratio of preparation emulsion hourly water consumption).
When the described emulsion that temperature is higher than 5～20 ℃ of phase change material fusing points is cooled to 0～25 ℃, adopt 0～20 ℃ water at low temperature or mixture of ice and water to make the emulsion cooling and will continue to stir emulsion.
The present invention has following advantage.
The invention provides a kind of new pulverous shaping phase-change material, can be pressed into as required different shape, its latent heat of phase change can change by the consumption of adjusting longer chain fatty acid as required, environmental stability is good, can be according to the different choice of use temperature different longer chain fatty acids are as phase-change heat-storage material, the preparation method of this shaping phase-change material is simple, and cost is lower, and is raw materials used all cheap and easy to get.Utilize the present invention can effectively improve the performance of organic phase change material, expand its range of application.
Embodiment
Embodiment 1.
1) preparation emulsion: get the palmitic acid of 2.6g, the cetyl trimethylammonium bromide of 0.08g mixes with 90mL water, puts into 68 ℃ water-bath, stirs to add 0.4g aniline and 1mL concentrated hydrochloric acid after 1 hour, and restir obtained stable emulsion in 1 hour.
2) cooling of emulsion: keep stirring velocity constant, change 68 ℃ hot water baths into ice-water bath, until emulsion temperature drops to 0～5 ℃.
3) initiated polymerization: keep the temperature of emulsion at 0～5 ℃, the 7mL aqueous solution that will contain the 0.98g ammonium persulphate under the vigorous stirring slowly is added drop-wise in the emulsion, adds in 20 minutes, continues to stir, and reacts 12 hours.
4) separation and purification product: the mixture after reaction finished filters, and filter cake is washed with water, then filter cake is namely got composite shape-setting phase-change material in 60 ℃ of oven dry.
5) heat accumulation test: the thermal energy storage performance test to described composite shape-setting phase-change material is carried out in the Q2000 type differential scanning calorimeter (DSC) that U.S. TA company produces, specific operation process is: the composite shape-setting phase-change material that takes by weighing 1.5～4mg is put into sample crucible, in 20～100 ℃ temperature range, scan with the temperature rise rate of 10 ℃/min; Then the program of using instrument to carry is processed experimental result, and the start-up phase temperature that records composite shape-setting phase-change material is 61.47 ℃, and the phase transformation peak temperature is 64.89 ℃, and latent heat of phase change is 172.3J/g.
6) stability test: composite shape-setting phase-change material is pressed into a right cylinder with tabletting machine under the pressure of 1MPa, puts into 70 ℃ thermostat container, the observation cylindrical shape does not change and does not have liquid to converge and leaks after 12 hours.
Embodiment 2.
1) preparation emulsion: get the palmitic acid of 1.8g, the cetyl trimethylammonium bromide of 0.054g mixes with 90mL water, puts into 70 ℃ water-bath, stirs to add 1.2g aniline and 1.1mL concentrated hydrochloric acid after 1 hour, and restir obtained stable emulsion in 1 hour.
2) cooling of emulsion: keep stirring velocity constant, change 70 ℃ hot water baths into ice-water bath, until emulsion temperature drops to 0～5 ℃.
3) initiated polymerization: keep the temperature of emulsion at 0～5 ℃, the 10mL aqueous solution that will contain the 2.91g ammonium persulphate under the vigorous stirring slowly is added drop-wise in the emulsion, adds in 20 minutes, continues to stir, and reacts 2 hours.
4) separation and purification product: the mixture after reaction finished filters, and filter cake is washed with water, then filter cake is namely got composite shape-setting phase-change material in 60 ℃ of oven dry.
5) heat accumulation test: the thermal energy storage performance test to described composite shape-setting phase-change material is carried out in the Q2000 type differential scanning calorimeter (DSC) that U.S. TA company produces, specific operation process is: the composite shape-setting phase-change material that takes by weighing 1.5～4mg is put into sample crucible, in 20～100 ℃ temperature range, scan with the temperature rise rate of 10 ℃/min; Then the program of using instrument to carry is processed experimental result, and the start-up phase temperature that records composite shape-setting phase-change material is 60.38 ℃, and the phase transformation peak temperature is 62.71 ℃, and latent heat of phase change is 102.8J/g.
5) stability test: composite shape-setting phase-change material is pressed into a right cylinder with tabletting machine under the pressure of 1MPa, puts into 70 ℃ thermostat container, the observation cylindrical shape does not change and does not have liquid to converge and leaks after 12 hours.
Embodiment 3.
1) preparation emulsion: get 20 acid of 1.6g, the cetyl trimethylammonium bromide of 0.08g mixes with 70mL water, puts into 80 ℃ water-bath, stirs to add 0.4g aniline and 0.56mL concentrated hydrochloric acid after 2 hours, and restir obtained stable emulsion in 1 hour.
2) cooling of emulsion: keep stirring velocity constant, change 80 ℃ hot water baths into 15～20 ℃ cooling bath, until emulsion temperature drops to 20～25 ℃.
3) initiated polymerization: keep the temperature of emulsion at 20～25 ℃, the 10mL aqueous solution that will contain the 0.98g ammonium persulphate under the vigorous stirring slowly is added drop-wise in the emulsion, adds in 20 minutes, continues to stir, and reacts 12 hours.
4) separation and purification product: the mixture after reaction finished filters, and filter cake is washed with water, then filter cake is namely got composite shape-setting phase-change material in 60 ℃ of oven dry.
5) heat accumulation test: the thermal energy storage performance test to described composite shape-setting phase-change material is carried out in the Q2000 type differential scanning calorimeter (DSC) that U.S. TA company produces, specific operation process is: the composite shape-setting phase-change material that takes by weighing 1.5～4mg is put into sample crucible, in 20～100 ℃ temperature range, scan with the temperature rise rate of 10 ℃/min; Then the program of using instrument to carry is processed experimental result, and the start-up phase temperature that records composite shape-setting phase-change material is 73.92 ℃, and the phase transformation peak temperature is 76.03 ℃, and latent heat of phase change is 163.3J/g.
6) stability test: composite shape-setting phase-change material is pressed into a right cylinder with tabletting machine under the pressure of 1MPa, puts into 80 ℃ thermostat container, the observation cylindrical shape does not change and does not have liquid to converge and leaks after 12 hours.
Embodiment 4.
1) preparation emulsion: get the TETRADECONIC ACID of 2.7g, the Sodium dodecylbenzene sulfonate of 0.5g mixes with 100mL water, puts into 74 ℃ water-bath, stirs to add 0.3g aniline after 1 hour, and restir obtained stable emulsion in 0.5 hour.
2) cooling of emulsion: keep stirring velocity constant, change 74 ℃ hot water baths into ice-water bath, until emulsion temperature drops to 0～5 ℃.
3) initiated polymerization: keep the temperature of emulsion at 0～5 ℃, the 10mL aqueous solution that will contain the 0.75g ammonium persulphate under the vigorous stirring slowly is added drop-wise in the emulsion, adds in 20 minutes, continues to stir, and reacts 12 hours.
4) separation and purification product: the mixture after reaction finished filters, and filter cake is washed with water, then filter cake is namely got composite shape-setting phase-change material in 50 ℃ of oven dry.
5) heat accumulation test: the thermal energy storage performance test to described composite shape-setting phase-change material is carried out in the Q2000 type differential scanning calorimeter (DSC) that U.S. TA company produces, specific operation process is: the composite shape-setting phase-change material that takes by weighing 1.5～4mg is put into sample crucible, in 10～90 ℃ temperature range, scan with the temperature rise rate of 10 ℃/min; Then the program of using instrument to carry is processed experimental result, and the start-up phase temperature that records composite shape-setting phase-change material is 53.04 ℃, and the phase transformation peak temperature is 58.52 ℃, and latent heat of phase change is 168.5J/g.
6) stability test: composite shape-setting phase-change material is pressed into a right cylinder with tabletting machine under the pressure of 1MPa, puts into 65 ℃ thermostat container, the observation cylindrical shape does not change and does not have liquid to converge and leaks after 12 hours.
Embodiment 5.
1) preparation emulsion: get the TETRADECONIC ACID of 0.6g, the Sodium dodecylbenzene sulfonate of 0.5g mixes with 100mL water, puts into 60 ℃ water-bath, stirs to add 2.4g aniline after 2 hours, and restir obtained stable emulsion in 0.5 hour.
2) cooling of emulsion: keep stirring velocity constant, change 60 ℃ hot water baths into ice-water bath, until emulsion temperature drops to 0～5 ℃.
3) initiated polymerization: keep the temperature of emulsion at 0～5 ℃, the 12mL aqueous solution that will contain the 5.89g ammonium persulphate under the vigorous stirring slowly is added drop-wise in the emulsion, adds in 20 minutes, continues to stir, and reacts 12 hours.
4) separation and purification product: the mixture after reaction finished filters, and filter cake is washed with water, then filter cake is namely got composite shape-setting phase-change material in 50 ℃ of oven dry.
5) heat accumulation test: the thermal energy storage performance test to described composite shape-setting phase-change material is carried out in the Q2000 type differential scanning calorimeter (DSC) that U.S. TA company produces, specific operation process is: the composite shape-setting phase-change material that takes by weighing 1.5～4mg is put into sample crucible, in 10～90 ℃ temperature range, scan with the temperature rise rate of 10 ℃/min; Then the program of using instrument to carry is processed experimental result, and the start-up phase temperature that records composite shape-setting phase-change material is 52.91 ℃, and the phase transformation peak temperature is 57.29 ℃, and latent heat of phase change is 33.2J/g.
6) stability test: composite shape-setting phase-change material is pressed into a right cylinder with tabletting machine under the pressure of 1MPa, puts into 65 ℃ thermostat container, the observation cylindrical shape does not change and does not have liquid to converge and leaks after 12 hours.
Claims (7)
1. pulverous composite shape-setting phase-change material, it is characterized in that: its framework material is polyaniline, the phase change material that plays the effect of latent heat heat accumulation is longer chain fatty acid; When temperature was higher than the fusing point of phase change material, this composite shape-setting phase-change material outward appearance still was solid-state and dimensionally stable; The consumption that the latent heat of phase change of this composite shape-setting phase-change material can be adjusted longer chain fatty acid as required makes it adjustable in 33～172 J/g scopes.
2. according to composite shape-setting phase-change material claimed in claim 1, it is characterized in that: described phase change material is sad, capric acid, laurostearic acid, TETRADECONIC ACID, palmitic acid, stearic acid, 20 acid, behenic acid, tetracosanoic acid or hydroxyhexacosanoic acid; Described tensio-active agent is Sodium dodecylbenzene sulfonate or cetyl trimethylammonium bromide.
3. according to composite shape-setting phase-change material claimed in claim 1, its preparation method is:
Under 5～20 ℃ of the fusing points that is higher than phase change material, with phase change material stir and the effect of tensio-active agent under be distributed to and form emulsion in the water, add again aniline and concentrated hydrochloric acid or only add aniline, then continue to be dispersed into stable emulsion; Emulsion under agitation is cooled to 0～25 ℃ and keep this temperature, then under agitation adds the polyreaction that ammonium persulfate aqueous solution causes aniline, react 2～12 hours by filter, washing also drying obtain composite shape-setting phase-change material.
4. according to preparation method claimed in claim 3, it is characterized in that: the content of phase change material is the 20-90%(mass ratio of phase change material and aniline quality sum in the described composite shape-setting phase-change material); The content of water is 30～35 times (mass ratioes) of phase change material and aniline consumption sum in the stable emulsion of described formation, the consumption of tensio-active agent is 0.06～0.5%(mass ratio of institute's water consumption), the consumption of concentrated hydrochloric acid is 0.8～1.2%(volume ratio of institute's water consumption).
5. according to preparation method claimed in claim 3, it is characterized in that: with phase change material stir and the effect of tensio-active agent under be distributed to that to form the emulsion required time in the water be 1～2 hour, to become the stable emulsion required time be 0.5～1 hour to the continuation dispersed with stirring after adding aniline with concentrated hydrochloric acid or only adding aniline.
6. according to preparation method claimed in claim 3, it is characterized in that: the ammonium persulfate aqueous solution concentration that adds is 0.075～0.59g/mL; Add-on is 7.8～12%(volume ratio of preparation emulsion hourly water consumption).
7. according to preparation method claimed in claim 3, it is characterized in that: when the emulsion that temperature is higher than 5～20 ℃ of phase change material fusing points is cooled to 0～25 ℃, adopt 0～20 ℃ water at low temperature or mixture of ice and water to make the emulsion cooling and will continue to stir emulsion.
Priority Applications (1)
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| CN103146351A (en) * | 2013-03-20 | 2013-06-12 | 长沙理工大学 | High-thermal-conductivity shape-stabilized phase change material and preparation method thereof |
| CN104830280A (en) * | 2015-05-07 | 2015-08-12 | 长沙理工大学 | Shape-stabilized phase change material for passive thermal protection and preparation method thereof |
| CN104830281A (en) * | 2015-05-07 | 2015-08-12 | 长沙理工大学 | Intermediate-temperature composite shape-stabilized phase-change heat storage material and preparation method thereof |
| CN104845592A (en) * | 2015-05-07 | 2015-08-19 | 长沙理工大学 | High-thermal-conductivity medium-temperature-shaped phase change material and preparation method thereof |
| CN106753265A (en) * | 2017-01-12 | 2017-05-31 | 合肥工业大学 | One kind improves CH3NH3PbI3The method of phase transition temperature |
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| CN110684510A (en) * | 2019-10-23 | 2020-01-14 | 广东工业大学 | Heat-conduction-enhanced heat-energy-storage shape-stabilized phase-change composite material and preparation method thereof |
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| CN103146351A (en) * | 2013-03-20 | 2013-06-12 | 长沙理工大学 | High-thermal-conductivity shape-stabilized phase change material and preparation method thereof |
| CN104830280A (en) * | 2015-05-07 | 2015-08-12 | 长沙理工大学 | Shape-stabilized phase change material for passive thermal protection and preparation method thereof |
| CN104830281A (en) * | 2015-05-07 | 2015-08-12 | 长沙理工大学 | Intermediate-temperature composite shape-stabilized phase-change heat storage material and preparation method thereof |
| CN104845592A (en) * | 2015-05-07 | 2015-08-19 | 长沙理工大学 | High-thermal-conductivity medium-temperature-shaped phase change material and preparation method thereof |
| CN104830281B (en) * | 2015-05-07 | 2017-12-05 | 长沙理工大学 | Intermediate-temperature composite shape-stabilized phase-change heat storage material and preparation method thereof |
| CN106753265A (en) * | 2017-01-12 | 2017-05-31 | 合肥工业大学 | One kind improves CH3NH3PbI3The method of phase transition temperature |
| CN106753265B (en) * | 2017-01-12 | 2019-04-05 | 合肥工业大学 | A kind of raising CH3NH3PbI3The method of phase transition temperature |
| CN109082266A (en) * | 2018-08-27 | 2018-12-25 | 西南科技大学 | A kind of Carbon foam base phase-change accumulation energy sensing material of high thermal conductivity and high heat storage coefficient |
| CN112442902A (en) * | 2019-08-27 | 2021-03-05 | 财团法人纺织产业综合研究所 | Fabric |
| CN110684510A (en) * | 2019-10-23 | 2020-01-14 | 广东工业大学 | Heat-conduction-enhanced heat-energy-storage shape-stabilized phase-change composite material and preparation method thereof |
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