CN103694963A - Composite phase change material and preparation method thereof - Google Patents
Composite phase change material and preparation method thereof Download PDFInfo
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- CN103694963A CN103694963A CN201310664542.4A CN201310664542A CN103694963A CN 103694963 A CN103694963 A CN 103694963A CN 201310664542 A CN201310664542 A CN 201310664542A CN 103694963 A CN103694963 A CN 103694963A
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Abstract
The invention discloses a composite phase change material. The composite phase change material comprises a carrier and an organic phase change material adsorbed on the surface of the carrier, wherein the carrier is a porous and graphitized carbon sphere. The composite phase change material disclosed by the invention takes the porous and graphitized carbon sphere as the carrier, and heat conduction performance is improved by graphitization of the porous and graphitized carbon sphere; meanwhile, specific surface area is greater, so that the organic phase change material is adsorbed by capillary force for sizing. Compared with the conventional phase change energy storage material, the composite phase change material is high in heat conduction and good in sizing. The invention further discloses a preparation method of the composite phase change material.
Description
Technical field
The present invention relates to fabrication of new materials, particularly relate to a kind of composite phase-change material and preparation method thereof.
Background technology
Along with global energy shortage problem is day by day serious, as the thermal source of one of main energy sources, its storage and utilization have become the focus of research and development.Thermal energy storage mode comprises: sensible heat, latent heat and chemical reaction heat.
Phase-changing energy storage material is absorb while undergoing phase transition with material or discharge amount of heat, realizes storage and the utilization of energy, effectively solves energy supply and demand unmatched contradiction on room and time.This class material is widely used in having discontinuity or instable heat management system, as the heat management such as energy-conservation of the heat radiation of " peak load shifting " of aerospace large power assembly heat management, sun power utilization, electric power, the remaining pick up the heat of industrial waste heat, cyclical intermission formula work electron device, covil construction heating and air-conditioning.U.S. NASA Lewis research centre utilizes high temperature phase change material (pcm) successfully to realize first set space solar thermodynamic power generation system 2KW electric power output in the world, indicates that this important space power technology has entered the new stage.
It is large that phase-changing energy storage material has energy storage density, keeps the advantage of constant temperature when heat absorption and heat release.Yet there is the shortcoming that heat conduction is lower and sizing is poor in the carrier of traditional phase-changing energy storage material.
Summary of the invention
Based on this, be necessary to provide a kind of heat conduction higher and sizing good composite phase-change material and preparation method thereof.
A composite phase-change material, comprises carrier and the organic phase change material that is adsorbed on described carrier surface, and described carrier is porous and graphited carbon microspheres.
In one embodiment, described organic phase change material is paraffin or stearic acid.
A preparation method for composite phase-change material, comprises the steps:
Carbon microspheres is provided;
Described carbon microspheres is distributed in deionized water, then adds strong base solution, mix post-drying and obtain the first desciccate, by the charing under Carbonization Atmospheres of described the first desciccate, after separation and purification, obtain the carbon microspheres of porous;
The carbon microspheres of described porous is distributed in deionized water, then add nitrate solution, mix post-drying and obtain the second desciccate, by the charing under described Carbonization Atmospheres of described the second desciccate, after separation and purification, obtain porous and graphited carbon microspheres;
Organic phase change material and described porous and graphited carbon microspheres are distributed in organic solvent, by described organic solvent volatilization completely, obtain described composite phase-change material.
In one embodiment, in the described step that carbon microspheres is provided, described carbon microspheres makes by the following method: the mixing solutions of configuration nitrate and glucose, then at 170 ℃～190 ℃, react 6h～10h, after hydrochloric acid and washed with de-ionized water that product is 0.1～0.3mol/L through dehydrated alcohol, concentration, dry, grinding, obtain described carbon microspheres.
In one embodiment, in the mixing solutions of described nitrate and glucose, the mol ratio of described nitrate and described glucose is 1.5:1;
Described nitrate is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
In one embodiment, obtain in the step of carbon microspheres of porous, the mass ratio of the solute of described carbon microspheres and described strong base solution is 1.5:1;
The solute of described strong base solution is KOH.
In one embodiment, obtain in the step of carbon microspheres of porous, by described the first desciccate being operating as of charing under Carbonization Atmospheres: described the first desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min.
In one embodiment, obtain in the step of carbon microspheres of porous, after described separation and purification, obtain being operating as of carbon microspheres of porous: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, dry, to obtain described porous after drying, grinding carbon microspheres.
In one embodiment, obtain in the step of porous and graphited carbon microspheres, in the carbon microspheres of described porous and described nitrate solution, the mass ratio of solute is 1:3～2:1;
The solute of described nitrate solution is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
In one embodiment, obtain in the step of porous and graphited carbon microspheres, by described the second desciccate being operating as of charing under described Carbonization Atmospheres: described the second desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min.
In one embodiment, obtain in the step of porous and graphited carbon microspheres, the step that obtains porous and graphited carbon microspheres after described separation and purification is: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, obtain described porous and graphited carbon microspheres after being dried, drying, grinding.
In one embodiment, obtain in the step of described composite phase-change material, the mass ratio of described organic phase change material and described porous and graphited carbon microspheres is 1:1～4:1.
In one embodiment, described organic phase change material is paraffin, stearic acid or polyoxyethylene glycol, and described organic solvent is sherwood oil or alcohol.
It is carrier that this composite phase-change material be take porous and graphited carbon microspheres, and porous and graphited carbon microspheres have improved heat conductivility by greying, thereby its specific surface area can be adsorbed organic phase change material by capillary force greatly and shaped simultaneously.This composite phase-change material, with respect to traditional phase-changing energy storage material, heat conduction is higher and sizing is better.
Accompanying drawing explanation
Fig. 1 is preparation method's the schema of the composite phase-change material of an embodiment;
Fig. 2 is the electron scanning micrograph of the carbon microspheres that makes of embodiment 1;
Fig. 3 is the porous that makes of embodiment 1 and the electron scanning micrograph of graphited carbon microspheres.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.A lot of details have been set forth in the following description so that fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar improvement without prejudice to intension of the present invention in the situation that, so the present invention is not subject to the restriction of following public concrete enforcement.
The composite phase-change material of one embodiment, comprises carrier and the organic phase change material that is adsorbed on carrier surface.
Carrier is porous and graphited carbon microspheres.
Organic phase change material is paraffin or stearic acid.
This porous and graphited carbon microspheres specific surface area are large, can reach 1400m
2/ g, make it to adsorb organic phase change material sizing (the highest quality of adsorption ratio is 4 times) by capillary force, and its degree of graphitization is high, can reach more than 78%.
It is carrier that this composite phase-change material be take porous and graphited carbon microspheres, and porous and graphited carbon microspheres have improved heat conductivility by greying, thereby its specific surface area can be adsorbed organic phase change material by capillary force greatly and shaped simultaneously.This composite phase-change material, with respect to traditional phase-changing energy storage material, heat conduction is higher and sizing is better.
In addition, porous and graphited carbon microspheres are micro-nano ball-type, good fluidity, and filling capacity is strong.
The preparation method of the above-mentioned composite phase-change material of one embodiment, comprises the steps:
S10, provide carbon microspheres.
Carbon microspheres can directly be bought and obtain from the market.
In present embodiment, carbon microspheres prepares by hydrothermal method.
The preparation method of carbon microspheres is specific as follows: the mixing solutions of configuration nitrate and glucose, then at 170 ℃～190 ℃, react 6h～10h, after hydrochloric acid and washed with de-ionized water that product is 0.1～0.3mol/L through dehydrated alcohol, concentration, dry, grinding, obtains carbon microspheres.
Wherein, in the mixing solutions of nitrate and glucose, the mol ratio of nitrate and glucose is 1.5:1, and nitrate is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
Using glucose as raw material, through hydrothermal method, prepare micron level carbon microspheres, raw material is cheap and easy to get, and preparation process is easy, and the carbon microspheres size distribution making is controlled.
S20, the carbon microspheres that S10 is obtained are distributed in deionized water, then add strong base solution, mix post-drying and obtain the first desciccate, by the charing under Carbonization Atmospheres of the first desciccate, obtain the carbon microspheres of porous after separation and purification.
In S20, the mass ratio of the solute of carbon microspheres and strong base solution is 1.5:1.
The solute of strong base solution is KOH.
In present embodiment, by the first desciccate being operating as of charing under Carbonization Atmospheres: the first desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min, completes charing.
In present embodiment, after separation and purification, obtain being operating as of carbon microspheres of porous: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, dry, to obtain porous after drying, grinding carbon microspheres.
By carbon microspheres is carried out to porous, the specific surface area that greatly increases porous carbon microspheres (can reach 1400m
2/ g), make it to adsorb organic phase change material sizing (the highest quality of adsorption ratio is 4 times) by capillary force.
The carbon microspheres of S30, porous that S20 is obtained is distributed in deionized water, then add nitrate solution, mix post-drying and obtain the second desciccate, by the charing under above-mentioned Carbonization Atmospheres of the second desciccate, after separation and purification, obtain porous and graphited carbon microspheres.
In S30, in the carbon microspheres of porous and nitrate solution, the mass ratio of solute is 1:3～2:1.
The solute of nitrate solution is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
In present embodiment, by the second desciccate being operating as of charing under Carbonization Atmospheres: the second desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min, completes charing.
In present embodiment, the step that obtains porous and graphited carbon microspheres after separation and purification is: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, obtain porous and graphited carbon microspheres after being dried, drying, grinding.
By the carbon microspheres of porous is carried out to greying, the degree of graphitization of porous and graphited carbon microspheres is reached more than 78%, thereby strengthened its heat conductivility.
S40, porous and graphited carbon microspheres that organic phase change material and S30 are obtained are distributed in organic solvent, by organic solvent volatilization completely, obtain composite phase-change material.
In S40, the mass ratio of organic phase change material and porous and graphited carbon microspheres is 1:1～4:1.
Organic phase change material can be paraffin, stearic acid or polyoxyethylene glycol.Organic solvent can be sherwood oil or alcohol.
The composite phase-change material that the preparation method of this composite phase-change material makes, take porous and graphited carbon microspheres is carrier, porous and graphited carbon microspheres have improved heat conductivility by greying, thereby simultaneously its specific surface area can be adsorbed organic phase change material by capillary force greatly and shaped.This composite phase-change material, with respect to traditional phase-changing energy storage material, heat conduction is higher and sizing is better.
In addition, porous and graphited carbon microspheres are micro-nano ball-type, good fluidity, and filling capacity is strong.
Below by specific embodiment, to above-mentioned composite phase-change material and preparation method thereof, be further explained and experimental results show that.
Embodiment 1
Take 5.067g dextrose anhydrous and be dissolved in 60mL deionized water, add 5mL0.3mol/L iron nitrate solution ultrasonic agitation even.The solution stirring is packed in the tetrafluoroethylene water heating kettle liner of 100mL, pack water heating kettle into, hydro-thermal reaction 8h at 180 ℃, takes out water heating kettle, and room temperature borehole cooling, obtains brownish black colloid.With dehydrated alcohol Disperse Brown black colloid final vacuum suction filtration, then with dehydrated alcohol and deionized water wash, repeatedly to obtain black particle be carbon microspheres.
Take 0.5g carbon microspheres and 0.75gKOH and disperse respectively and be dissolved in deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, the powder obtaining is carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, dry the carbon microspheres that obtains porous after grinding.
The carbon microspheres and the 0.75g iron nitrate that take 0.5g porous disperse respectively and are dissolved in 60mL deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, and the powder obtaining are carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, and oven dry obtains porous and graphited carbon microspheres after milling.
Take 0.5g porous and graphited carbon microspheres, the dispersion of 1.0g low melt point paraffin and be dissolved in petroleum ether solvent, magneton volatilizees sherwood oil under stirring completely, collects powder, after grinding, obtains composite phase-change material.
Fig. 2 is the electron scanning micrograph of the carbon microspheres that makes of the present embodiment, and Fig. 3 is the porous that makes of the present embodiment and the electron scanning micrograph of graphited carbon microspheres.
By Fig. 2 and Fig. 3, can significantly be found out, porous and graphitized carbon microsphere surface have a lot of spaces, and with respect to common carbon microspheres, the specific surface area of porous and graphited carbon microspheres is higher.
Embodiment 2
Take 5.067g dextrose anhydrous and be dissolved in 60mL deionized water, add 5mL0.5mol/L iron nitrate solution ultrasonic agitation even.The solution stirring is packed in the tetrafluoroethylene water heating kettle liner of 100mL, pack water heating kettle into, hydro-thermal reaction 6h at 180 ℃, takes out water heating kettle, and room temperature borehole cooling, obtains brownish black colloid.With dehydrated alcohol Disperse Brown black colloid final vacuum suction filtration, then with dehydrated alcohol and deionized water wash, repeatedly to obtain black particle be carbon microspheres.
Take 0.5g carbon microspheres and 0.75gKOH and disperse respectively and be dissolved in deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, the powder obtaining is carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, dry the carbon microspheres that obtains porous after grinding.
The carbon microspheres and the 0.75g iron nitrate that take 0.5g porous disperse respectively and are dissolved in 60mL deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, and the powder obtaining are carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, and oven dry obtains porous and graphited carbon microspheres after milling.
Take 0.5g porous and graphited carbon microspheres and 2.0g low melt point paraffin and disperse and be dissolved in petroleum ether solvent, magneton volatilizees sherwood oil under stirring completely, collects powder, after grinding, obtains composite phase-change material.
Embodiment 3
Take 5.067g dextrose anhydrous and be dissolved in 60mL deionized water, add 5mL0.3mol/L iron nitrate solution ultrasonic agitation even.The solution stirring is packed in the tetrafluoroethylene water heating kettle liner of 100mL, pack water heating kettle into, hydro-thermal reaction 6h at 190 ℃, takes out water heating kettle, and room temperature borehole cooling, obtains brownish black colloid.With dehydrated alcohol Disperse Brown black colloid final vacuum suction filtration, then with dehydrated alcohol and deionized water wash, repeatedly to obtain black particle be carbon microspheres.
Take 0.5g carbon microspheres and 0.75gKOH and disperse respectively and be dissolved in deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, the powder obtaining is carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, dry the carbon microspheres that obtains porous after grinding.
Take 0.5g porous carbon microspheres and 0.75g iron nitrate and disperse respectively and be dissolved in 60mL deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, the powder obtaining is carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, and oven dry obtains porous and graphited carbon microspheres after milling.
Take 0.5g porous and graphited carbon microspheres and 1.5g low melt point paraffin and disperse and be dissolved in petroleum ether solvent, magneton volatilizees sherwood oil under stirring completely, collects powder, after grinding, obtains composite phase-change material.
Embodiment 4
Take 5.067g dextrose anhydrous and be dissolved in 60mL deionized water, add 5mL0.3mol/L iron nitrate solution ultrasonic agitation even.The solution stirring is packed in the tetrafluoroethylene water heating kettle liner of 100mL, pack water heating kettle into, hydro-thermal reaction 8h at 180 ℃, takes out water heating kettle, and room temperature borehole cooling, obtains brownish black colloid.With dehydrated alcohol Disperse Brown black colloid final vacuum suction filtration, then with dehydrated alcohol and deionized water wash, repeatedly to obtain black particle be carbon microspheres.
Take 0.5g carbon microspheres and 0.5gKOH and disperse respectively and be dissolved in deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, the powder obtaining is carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, dry the carbon microspheres that obtains porous after grinding.
The carbon microspheres and the 0.5g iron nitrate that take 0.5g porous disperse respectively and are dissolved in 60mL deionized water, after ultrasonic dispersion, in 120 ℃ of baking ovens, dry, and the powder obtaining are carried out under nitrogen protection to charing.Carbonization temperature used is 700 ℃, and heat-up rate is 5 ℃/min, and soaking time is 3 hours, with stove, lowers the temperature.Dilute hydrochloric acid for powder (0.1mol/L) after calcining and deionized water vacuum filtration clean to neutral, and oven dry obtains porous and graphited carbon microspheres after milling.
Take 0.5g porous and graphited carbon microspheres and 2g low melt point paraffin and disperse and be dissolved in petroleum ether solvent, magneton volatilizees sherwood oil under stirring completely, collects powder, after grinding, obtains composite phase-change material.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (13)
1. a composite phase-change material, is characterized in that, comprises carrier and the organic phase change material that is adsorbed on described carrier surface, and described carrier is porous and graphited carbon microspheres.
2. composite phase-change material according to claim 1, is characterized in that, described organic phase change material is paraffin or stearic acid.
3. a preparation method for composite phase-change material, is characterized in that, comprises the steps:
Carbon microspheres is provided;
Described carbon microspheres is distributed in deionized water, then adds strong base solution, mix post-drying and obtain the first desciccate, by the charing under Carbonization Atmospheres of described the first desciccate, after separation and purification, obtain the carbon microspheres of porous;
The carbon microspheres of described porous is distributed in deionized water, then add nitrate solution, mix post-drying and obtain the second desciccate, by the charing under described Carbonization Atmospheres of described the second desciccate, after separation and purification, obtain porous and graphited carbon microspheres;
Organic phase change material and described porous and graphited carbon microspheres are distributed in organic solvent, by described organic solvent volatilization completely, obtain described composite phase-change material.
4. the preparation method of composite phase-change material according to claim 3, it is characterized in that, in the described step that carbon microspheres is provided, described carbon microspheres makes by the following method: the mixing solutions of configuration nitrate and glucose, then at 170 ℃～190 ℃, react 6h～10h, after hydrochloric acid and washed with de-ionized water that product is 0.1～0.3mol/L through dehydrated alcohol, concentration, dry, grinding, obtains described carbon microspheres.
5. the preparation method of composite phase-change material according to claim 4, is characterized in that, in the mixing solutions of described nitrate and glucose, the mol ratio of described nitrate and described glucose is 1.5:1;
Described nitrate is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
6. the preparation method of composite phase-change material according to claim 3, is characterized in that, obtains in the step of carbon microspheres of porous, and the mass ratio of the solute of described carbon microspheres and described strong base solution is 1.5:1;
The solute of described strong base solution is KOH.
7. the preparation method of composite phase-change material according to claim 3, it is characterized in that, obtain in the step of carbon microspheres of porous, by described the first desciccate being operating as of charing under Carbonization Atmospheres: described the first desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min.
8. the preparation method of composite phase-change material according to claim 3, it is characterized in that, obtain in the step of carbon microspheres of porous, after described separation and purification, obtain being operating as of carbon microspheres of porous: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, dry, to obtain described porous after drying, grinding carbon microspheres.
9. the preparation method of composite phase-change material according to claim 3, is characterized in that, obtains in the step of porous and graphited carbon microspheres, and in the carbon microspheres of described porous and described nitrate solution, the mass ratio of solute is 1:3～2:1;
The solute of described nitrate solution is iron nitrate, nickelous nitrate or Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
10. the preparation method of composite phase-change material according to claim 3, it is characterized in that, obtain in the step of porous and graphited carbon microspheres, by described the second desciccate being operating as of charing under described Carbonization Atmospheres: described the second desciccate, under nitrogen atmosphere or argon gas atmosphere, is warming up to 600 ℃～800 ℃ and keep 3h～5h with the speed of 5 ℃/min.
The preparation method of 11. composite phase-change materials according to claim 3, it is characterized in that, obtain in the step of porous and graphited carbon microspheres, the step that obtains porous and graphited carbon microspheres after described separation and purification is: the hydrochloric acid that is 0.1～0.3mol/L through concentration by product, washed with de-ionized water, obtain described porous and graphited carbon microspheres after being dried, drying, grinding.
The preparation method of 12. composite phase-change materials according to claim 3, is characterized in that, obtains in the step of described composite phase-change material, and the mass ratio of described organic phase change material and described porous and graphited carbon microspheres is 1:1～4:1.
The preparation method of 13. composite phase-change materials according to claim 3, is characterized in that, described organic phase change material is paraffin, stearic acid or polyoxyethylene glycol, and described organic solvent is sherwood oil or alcohol.
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| CN104927776A (en) * | 2015-05-19 | 2015-09-23 | 北京科技大学 | Preparation method of multilevel-structure titanium dioxide based composite phase-change material |
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| CN108504331A (en) * | 2018-04-04 | 2018-09-07 | 宜华生活科技股份有限公司 | The preparation method of three-dimensional sizing high heat conductance phase-change accumulation energy charred wood |
| CN113493680A (en) * | 2020-04-02 | 2021-10-12 | 中国科学院大连化学物理研究所 | Porous graphite-based composite shaped phase-change material and preparation and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927776A (en) * | 2015-05-19 | 2015-09-23 | 北京科技大学 | Preparation method of multilevel-structure titanium dioxide based composite phase-change material |
| CN105602529A (en) * | 2016-01-12 | 2016-05-25 | 广东省宜华木业股份有限公司 | Preparation method of stabilizer phase change material using sawdust as supporting material |
| CN105602529B (en) * | 2016-01-12 | 2019-01-15 | 宜华生活科技股份有限公司 | It is a kind of using sawdust as the preparation method of the sizing phase-change material of backing material |
| CN108504331A (en) * | 2018-04-04 | 2018-09-07 | 宜华生活科技股份有限公司 | The preparation method of three-dimensional sizing high heat conductance phase-change accumulation energy charred wood |
| CN113493680A (en) * | 2020-04-02 | 2021-10-12 | 中国科学院大连化学物理研究所 | Porous graphite-based composite shaped phase-change material and preparation and application thereof |
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