CN106893562A - A kind of composite phase-change energy storage material and preparation method - Google Patents
A kind of composite phase-change energy storage material and preparation method Download PDFInfo
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- CN106893562A CN106893562A CN201710257292.0A CN201710257292A CN106893562A CN 106893562 A CN106893562 A CN 106893562A CN 201710257292 A CN201710257292 A CN 201710257292A CN 106893562 A CN106893562 A CN 106893562A
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Abstract
The invention belongs to technical field of phase-change energy storage, and in particular to a kind of compound phase-changing energy storage material and preparation method.The composite phase-change energy storage material, consists of the following composition, the composition such as energy storage material, stabilizer, modifying agent, nucleator, enhanced thermal conduction agent, carrier.The energy storage material for preparing of method provided by the present invention has that heat accumulation is high, calorific potential is high, thermal conductivity factor is high, stability is high, storage density is big, temperature in use is between 10 120 degree, long-term use does not produce the phenomenon of phase separation, the advantages of service life extends.
Description
Technical field
The invention belongs to technical field of phase-change energy storage, and in particular to a kind of compound phase-changing energy storage material and preparation side
Method.
Background technology
Energy is stored using the phase transformation of chemical material, the conversion and utilization of storage energy is realized, energy can be alleviated and supplied
Seek greater demand and improve the service efficiency of the energy.In recent years, with the development of social economy, the research of energy storage is got over
Cause the attention of scientific research personnel to get over, the wherein storage of heat and application is closely bound up with manufacturing enterprise, the people's livelihood.Energy storage phase transformation skill
Art is the rational and efficient use energy, Optimum utilization and the major technique for improving energy efficiency.
There is Inorganic phase change energy storage material fusing point to fix, the advantages of the heat of transformation, thermal conductivity factor and big volume energy storage density,
And because low cost, preparation are simple, thus have good application prospect；Crystallization water abjection when its thermal energy storage process is mainly intensification,
Inorganic salts melt and absorb heat；There is inverse process during cooling, absorb the crystallization water and heat release.This kind of phase-change material mainly includes alkali and alkali
Halide, nitrate, phosphate, carbonate of earth metal etc., as the commercial phase-change material of energy-storage property inexpensive, high, easily
There is supercooling and phenomenon of phase separation, cause material to separate out, reduce cycle life, seriously restrict practical application.Simultaneously as phase transformation
Material itself thermal conductivity factor is relatively low, proposes requirement higher to product heat transmission equipment in actual applications.
The content of the invention
Compound phase-changing energy storage material prepared by the present invention mainly solves conventional inorganic salts phase-change material degree of supercooling greatly, in phase
Inorganic salts melt and can not be merged with the crystallization water and cause salt to be separated from water during change, and being effective composition gradually reduces, so that
Greatly influence the technical problem of energy storage effect.
It is an object of the invention to provide a kind of heat accumulation it is high, calorific potential is high, thermal conductivity factor is high, stability is high, storage density
Greatly, between 25-120 degree, long-term use does not produce the phenomenon of phase separation to temperature in use, improves NEW TYPE OF COMPOSITE phase-change material
Heat accumulation and heat conductivility.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of composite phase-change energy storage material, consists of the following composition, and energy storage material, stabilizer, modifying agent, nucleator, heat conduction increase
The compositions such as strong agent, carrier.
Wherein, the composite phase-change energy storage material, including following mass percentage content component：
Energy storage material Sodium acetate trihydrate 26-52%,
Sal glauberi 25-30%,
Five water sodium thiosulfate 15-30%,
Nucleator barium carbonate 1-2%,
Calgon 1-2%,
Modifying agent agar powder 1-2%,
Dimethicone 1-2%,
Enhanced thermal conduction agent fatty acid methyl ester 2-3%,
Carrier white carbon 2-3%.
Preferably, the grain size category of the white carbon is 300 mesh.
A kind of preparation method of above-mentioned composite phase-change energy storage material, it is characterised in that comprise the following steps：
（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent agar powder solution for standby, its
Middle agar powder is 1 with the mass ratio of water:4-6；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 50-80 DEG C is heated to, mixed
After compound melts, stirring causes that mixture is uniform, forms eutectic liquid solution, then sequentially add in proportion nucleator barium carbonate,
Calgon；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 20-40min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 15-25min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, is sufficiently stirred for, until mixture is produced without lamination, obtain compound phase transformation storage
Can material.
Preferably, step（1）Middle agar powder is 1 with the mass ratio of water:4-6.
Preferably, step（5）Middle mixing time is 15-25min.
It is of the invention a little and beneficial effect：
Compound phase-changing energy storage material prepared by the present invention with the addition of modifying agent agar powder and dimethicone and fatty acid methyl
Ester enhances the amalgamation of energy storage material, and stability extends service life.By the experiment of more than 300 times more than 2 years, various property
Can be good, product expected service life 15-20 or so.
Compound phase-changing energy storage material prepared by the present invention can be applied to " coal changes electricity " trough-electricity energy storage, reaches and " moves peak to fill out
Paddy " reasonable energy utilization, reduces operating cost, and the present invention is with a wide range of applications in energy field.Prepared by the present invention
Phase-changing energy storage material it is nontoxic, safe and reliable, nonflammable.
The preparation method process is simple that the present invention is provided, energy storage material low cost is adapted to workshop large-scale production, adaptability
Extensively, using simple.The phase-changing energy storage material phase transition temperature for preparing in this approach be 25-30 degree, maximum operation (service) temperature up to 122 degree,
Latent heat of phase change reaches 155kJ/kg.
Compound energy storage material heat content prepared by the present invention reaches 275kJ/kg, thermal conductivity factor 3.58w/m.k.Energy storage material
With heat enthalpy value and calorific potential very high higher.Therefore there is good application value.
Specific embodiment
Embodiment 1
A kind of composite phase-change energy storage material, including following mass percentage content component：
Sodium acetate trihydrate 26%,
Sal glauberi 30%,
Five water sodium thiosulfate 30%,
Barium carbonate 2%,
Calgon 2%,
Agar powder 2%,
Dimethicone 2%,
Fatty acid methyl ester 3%,
White carbon（300 mesh） 3%.
Its preparation method is：（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent
Agar powder solution for standby, wherein agar powder are 1 with the mass ratio of water：4；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 50 DEG C, mixture are heated to
After thawing, stirring causes that mixture is uniform, forms eutectic liquid solution, and nucleator barium carbonate, six inclined is then sequentially added in proportion
Sodium phosphate；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 40min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 20min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, 20min is sufficiently stirred for, until mixture is produced without lamination, compound phase is obtained
Change energy-storage material.
Embodiment 2
A kind of composite phase-change energy storage material, including following mass percentage content component：
Sodium acetate trihydrate 48%,
Sal glauberi 25%,
Five water sodium thiosulfate 15%,
Barium carbonate 2%,
Calgon 1%,
Agar powder 2%,
Dimethicone 1%,
Fatty acid methyl ester 3%,
White carbon（300 mesh） 3%.
Its preparation method is：（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent
Agar powder solution for standby, wherein agar powder are 1 with the mass ratio of water：6；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 80 DEG C, mixture are heated to
After thawing, stirring causes that mixture is uniform, forms eutectic liquid solution, and nucleator barium carbonate, six inclined is then sequentially added in proportion
Sodium phosphate；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 20min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 25min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, 25min is sufficiently stirred for, until mixture is produced without lamination, compound phase is obtained
Change energy-storage material.
Embodiment 3
A kind of composite phase-change energy storage material, including following mass percentage content component：
Sodium acetate trihydrate 30%,
Sal glauberi 30%,
Five water sodium thiosulfate 30%,
Barium carbonate 1%,
Calgon 2%,
Agar powder 1%,
Dimethicone 2%,
Fatty acid methyl ester 2%,
White carbon（300 mesh） 2%.
Its preparation method is：（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent
Agar powder solution for standby, wherein agar powder are 1 with the mass ratio of water：5；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 60 DEG C, mixture are heated to
After thawing, stirring causes that mixture is uniform, forms eutectic liquid solution, and nucleator barium carbonate, six inclined is then sequentially added in proportion
Sodium phosphate；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 30min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 15min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, 15min is sufficiently stirred for, until mixture is produced without lamination, compound phase is obtained
Change energy-storage material.
Embodiment 4
A kind of composite phase-change energy storage material, including following mass percentage content component：
Sodium acetate trihydrate 52%,
Sal glauberi 25%,
Five water sodium thiosulfate 15%,
Barium carbonate 1%,
Calgon 1%,
Agar powder 1%,
Dimethicone 1%,
Fatty acid methyl ester 2%,
White carbon（300 mesh） 2%.
Its preparation method is：（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent
Agar powder solution for standby, wherein agar powder are 1 with the mass ratio of water：5；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 60 DEG C, mixture are heated to
After thawing, stirring causes that mixture is uniform, forms eutectic liquid solution, and nucleator barium carbonate, six inclined is then sequentially added in proportion
Sodium phosphate；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 30min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 15min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, 15min is sufficiently stirred for, until mixture is produced without lamination, compound phase is obtained
Change energy-storage material.
Dsc analysis are carried out to embodiment 1-4 products obtained therefroms, 1 is the results are shown in Table：
The hot physical property table of the products obtained therefrom of the present invention of table 1
。
The compound phase-changing energy storage material obtained by method made above, anti-superfusibility, delamination resistance, water-retaining property and stabilization
Property is all very high.
In above example 1- embodiments 4, it is totally-enclosed in the rustless steel container respectively in the case of done more than 300 times
Application test, respectively in 25-30 degree, latent heat is in 130-145kJ/kg, degree of supercooling 0-3 degree for transformation temperature.
From embodiment 1-4, after adding agar powder and dimethicone so that phase-change material is melted, effective ground resistance
Sedimentation, layering, the stability and water-retaining property so as to improve phase-change material of phase-change material are stopped, have been tried by the circulation more than 2 years
Test, the various property retentions of phase-change material are constant.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the scope of the present invention
It is defined, under the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to technical solution of the present invention
The various modifications made and improvement, all should fall into the protection domain of claims of the present invention determination.
Claims (5)
1. a kind of composite phase-change energy storage material, it is characterised in that the component including following mass percentage content：
Energy storage material Sodium acetate trihydrate 26-52%,
Sal glauberi 25-30%,
Five water sodium thiosulfate 15-30%,
Nucleator barium carbonate 1-2%,
Calgon 1-2%,
Modifying agent agar powder 1-2%,
Dimethicone 1-2%,
Enhanced thermal conduction agent fatty acid methyl ester 2-3%,
Carrier white carbon 2-3%.
2. composite phase-change energy storage material according to claim 1, it is characterised in that the grain size category of the white carbon is
300 mesh.
3. the preparation method of the composite phase-change energy storage material described in a kind of any one of claim 1-2, it is characterised in that including with
Lower step：
（1）Each component is weighed in proportion, agar powder is added to the water, fully dissolving, obtain modifying agent agar powder solution for standby；
（2）Sodium acetate trihydrate, five water sodium thiosulfate, sal glauberi are sufficiently mixed in proportion, 50-80 DEG C is heated to, mixed
After compound melts, stirring causes that mixture is uniform, forms eutectic liquid solution, then sequentially add in proportion nucleator barium carbonate,
Calgon；
（3）Then step is added（1）The modifying agent agar powder solution and dimethicone for obtaining, are sufficiently stirred for 20-40min；
（4）Enhanced thermal conduction agent fatty acid methyl ester is added, 15-25min is sufficiently stirred for；
（5）Carrier white carbon is eventually adding, is sufficiently stirred for, until mixture is produced without lamination, obtain compound phase transformation storage
Can material.
4. preparation method according to claim 3, it is characterised in that step（1）Middle agar powder is 1 with the mass ratio of water:
4-6。
5. preparation method according to claim 3, it is characterised in that step（5）Middle mixing time is 15-25min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110423481A (en) * | 2019-07-25 | 2019-11-08 | 齐鲁工业大学 | A kind of biology base thermal adaptation composite materials and preparation method thereof of three-dimensional multi-element eutectic structure |
| CN112080255A (en) * | 2020-08-14 | 2020-12-15 | 上海大学 | Low-temperature composite phase-change energy storage material and preparation method thereof |
| CN112442337A (en) * | 2019-08-29 | 2021-03-05 | 张立强 | Resin type phase change energy storage material and preparation method thereof |
| CN115418195A (en) * | 2022-08-18 | 2022-12-02 | 嘉兴赛曼泰克新材料有限公司 | Composite phase-change heat storage material for lithium battery pack heat management and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423481A (en) * | 2019-07-25 | 2019-11-08 | 齐鲁工业大学 | A kind of biology base thermal adaptation composite materials and preparation method thereof of three-dimensional multi-element eutectic structure |
| CN110423481B (en) * | 2019-07-25 | 2021-06-29 | 齐鲁工业大学 | Bio-based thermal adaptive composite material with three-dimensional multi-element eutectic structure and preparation method thereof |
| CN112442337A (en) * | 2019-08-29 | 2021-03-05 | 张立强 | Resin type phase change energy storage material and preparation method thereof |
| CN112080255A (en) * | 2020-08-14 | 2020-12-15 | 上海大学 | Low-temperature composite phase-change energy storage material and preparation method thereof |
| CN115418195A (en) * | 2022-08-18 | 2022-12-02 | 嘉兴赛曼泰克新材料有限公司 | Composite phase-change heat storage material for lithium battery pack heat management and preparation method thereof |
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