CN103468218A - Inorganic nano phase change energy storage material and preparation method thereof - Google Patents
Inorganic nano phase change energy storage material and preparation method thereof Download PDFInfo
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- CN103468218A CN103468218A CN2013103873293A CN201310387329A CN103468218A CN 103468218 A CN103468218 A CN 103468218A CN 2013103873293 A CN2013103873293 A CN 2013103873293A CN 201310387329 A CN201310387329 A CN 201310387329A CN 103468218 A CN103468218 A CN 103468218A
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Abstract
The invention discloses an inorganic nano phase change energy storage material and a preparation method thereof, and belongs to the technical field of low carbon and energy conservation of buildings. The inorganic nano phase change energy storage material prepared by taking nano silica gel obtained by hydrolyzing tetraethoxysilane and aluminic acid ester, and aluminum oxide powder as inorganic nano rubber powder wall materials and nano sodium acetate trihydrate NaCH3COO.3H2O as a core material and encapsulating the nano core material with the inorganic nano rubber powder wall materials has a phase change temperature of 58 DEG C and is suitable for being used as a phase change energy storage material of a drying room.
Description
Technical field
The invention belongs to building low-carbon energy-saving technical field, specifically a kind of inorganic nano phase-changing energy storage material and preparation method thereof.
Background technology
In physical environment, produce a large amount of heats every day, as: sun power, animal body loses heat, the combustion heat, heat of friction, object running heat etc.Phase-changing energy storage material is in the process undergone phase transition at itself, absorbs the material of these heats, and to environment, discharges when needed, and reach, controls ambient temperature and energy-conservation purpose.By its chemical constitution, can be divided into: organic phase change energy storage material, combined phase-change energy storage material and inorganic-phase variable energy storage material.Organic phase change energy storage material has that chemical stability is good, suitable phase transition temperature, without the advantage such as being separated, yet the organic phase change energy storage material thermal conductivity is lower, causes its heat transfer property in the application of accumulator system poor, thereby reduced the usefulness of system; The combined phase-change energy storage material has advantages of adjustable within the specific limits, but easily aging, through just losing the energy storage effect after circulation several times; The inorganic-phase variable energy storage material has that use range is wide, thermal conductivity is large, heat of fusion than large, the storage heat density is large, the advantages such as the phase transformation volume change is little, toxicity is little, low price, firmly get people's favor, therefore the preparation of the inorganic energy storage material of this class and to be applied in the patent application aspect more and more, as: " a kind of preparation technology of organic salt/ceramic base high temperature phase-changing energy-storing material ", application number 200510120619.7; " a kind of inorganic-phase variable energy storage material ", application number 201210037753; " a kind of preparation technology of organic salt/ceramic base high temperature phase-changing energy-storing material ", application number CN200810065301.7; " a kind of high-performance medium-temperature inorganic-phase variable energy storage material and preparation method thereof ", application number 201210557115 etc.There is cold, non-homogeneous melting and the phenomenon such as be separated usually in the inorganic-phase variable energy storage material, caused not energy storage should energy storage the time, should discharge can the time do not discharge can, obvious layering, the large lossy of enthalpy of phase change appear in system.In order to address the above problem, the contriver puts forward various plans, and as " a kind of heat-storage medium and uses thereof ", application number 200610104583.8, propose magnesium nitrate, and magnesium chloride and water form the salt water chemical compound of eutectic, " a kind of inorganic-phase variable energy storage material ", application number 201210037753.0, adopt and add nucleator and dispersion agent in inorganic salt hydrate, " a kind of preparation method of inorganic hydrous salt phase transition energy-storing material ", application number 200810065301.7, employing adds in inorganic salt hydrate prevented the cryogen sodium tetraborate, although these methods have some effects, but also be confined to some system, there is certain limitation at the phase-changing energy storage material choice and operation, the inventor studies discovery, the inorganic salt hydrate phase-changing energy storage material is distributed to nano_scale particle, be rolled into capsule of nano, can solve well the mistake cold-peace problem of phase separation of phase-changing energy storage material, the contriver develops a series of nano inorganic phase-changing energy storage materials according to this discovery and design, the present invention is exactly one of this inorganic-phase variable energy storage material of exploitation.
Summary of the invention
The object of the invention is to the inorganic salt hydrate phase-changing energy storage material is distributed to nano_scale particle, and be wrapped in capsule of nano, overcome the mistake cold-peace problem of phase separation of phase-changing energy storage material, when developing a series of inorganic-phase variable energy storage material unlike the prior art, can also control the temperature of inorganic salt hydrate phase-changing energy storage material, meet different insulations, heat insulation, energy storage, the requirement of temperature adjustment object to different inorganic phase-changing material performances.
A kind of inorganic nano phase-changing energy storage material of the present invention, to make the wall material with the inorganic nano rubber powder, make core with nanometer without salt hydrate, seal nano inorganic salt hydrate core by nanometer rubber powder wall material and form a kind of inorganic nano energy storage material, indication inorganic nano rubber powder refers to silica gel, the aluminum oxide powder formed by tetraethoxy and Aluminate hydrolysis, and tetraethoxy, Aluminate are amounted to into oxide compound and met SiO
2/ Al
2o
3ratio between molecule is 1: 0.5, and indication nano inorganic salt hydrate refers to sodium-acetate hydrate NaCH
3cOO3H
2o; The weight ratio of wall material and core is 1: 1, product yardstick 58 nanometers, and 58 ℃ of transformation temperatures, the cooling curve proof is without crossing the cold-peace problem of phase separation; Storage density 320J/g; The capsule stable in properties, after carrying out 80 high temperature trickle circulations and 25 heating, freeze cycle, the matter loss is less than 1%, does not find that cold-peace was separated.
The preparation method of a kind of inorganic nano phase-changing energy storage material of the present invention is to follow these steps to successively processing:
(1) take technical grade 3 water acetic acid sodium hydrate NaCH
3cOO3H
2o is heated to 60 ℃, is mixed with saturated aqueous solution, adds the long-pending dehydrated alcohol of diploid, stirs and be quenched to 0-10 ℃, obtains nano-scale phase-changing energy storage material sodium-acetate hydrate NaCH
3cOO3H
2the O precipitation;
(2) will take tetraethoxy, Aluminate respectively, mol ratio, tetraethoxy: Aluminate=1: 0.5;
(3) respectively tetraethoxy and Aluminate are added to step (1), tetraethoxy and Aluminate weight sum and 3 water acetic acid sodium NaCH
3cOO3H
2the O weight ratio is 1: 1;
(4) step (3) mixture is stirred 2 hours with the 600-1000r/min rotating speed, make the nanometer wall material silica gel, aluminum oxide powder of hydrolysis by nano level 3 water acetic acid sodium NaCH
3cOO3H
2the O parcel;
(5) centrifuge dehydration, dehydration filtrate Distillation recovery ethanol.
Filtrate Distillation recovery ethanol after above-mentioned centrifuge dehydration.
While designing for building materials according to parameter provided by the invention, use.
Product of the present invention is mainly used in building that drying room is heat insulation, lagging material.
The principle of the invention is with nano grade inorganic phase-changing energy storage material 3 water acetic acid sodium NaCH
3cOO3H
2o is core, using the hydrolysis of tetraethoxy and Aluminate and nano level silica gel, aluminum oxide powder as the wall material, seal nanometer core material inorganic salt hydrate phase-changing energy storage material by nanometer rubber powder wall material, overcome phase-changing energy storage material 3 water acetic acid sodium NaCH
3cOO3H
2that O deposits is excessively cold, layering and the problems such as be separated, and makes it to become stable phase-changing energy storage material, and the characteristics that the present invention utilizes sodium-acetate to dissolve to vary with temperature large and solution water to be insoluble to ethanol prepare nano level sodium-acetate core.For building heat preservation, heat insulation, energy storage, temperature adjustment, sound insulation.
The invention effect:
1. product transformation temperature of the present invention is 58 ℃, and storage density 320J/g is nontoxic, corrosion-free, is particularly suitable for the house insulation, heat insulation, energy storage, temperature adjustment.
2. Product Process of the present invention is simple, and the cost inferior quality is easily controlled, stable.
3. Reusability is without being separated.
4. the present invention, by rapid reaction, is dispersed into rapidly nano_scale particle by inorganic salt hydrate, and is wrapped up by aluminum phosphate, the inorganic salt crystal water is difficult for scattering and disappearing, the particulate molecular motion suffers restraints, and effectively controlled and crossed the phenomenon that cold-peace is separated, be a kind of good phase-changing energy storage material.
The accompanying drawing explanation
Fig. 1 is product fusing of the present invention--freezing curve, from scheming, and 58 ℃ of product transformation temperatures of the present invention.
Embodiment
(1) take technical grade acetic acid sodium hydrate NaCH
3cOO3H
2o 500g, water 360g, be heated to 60 ℃, makes to dissolve fully, adds the 720ml dehydrated alcohol, is cooled to rapidly 0-10 ℃, obtains the nano-scale phase-changing energy storage material, NaCH
3cOO3H
2o core precipitation;
(2) will take tetraethoxy 388g respectively, aluminic acid trimethyl 112g, tetraethoxy and Aluminate mol ratio are 1: 0.5;
(3) respectively tetraethoxy and aluminic acid trimethyl are added to step (1), tetraethoxy and aluminic acid trimethyl weight sum and 3 water acetic acid sodium NaCH
3cOO3H
2the O weight ratio is 1: 1;
(4) step (3) mixture is stirred 2 hours with the 600-1000r/min rotating speed, make the nanometer wall material silica gel, aluminum oxide powder of hydrolysis by nano level 3 water acetic acid sodium NaCH
3cOO3H
2the O parcel;
(5) centrifuge dehydration, dehydration filtrate Distillation recovery ethanol, solid drying is product.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any type of restriction, any disengaging technical solution of the present invention content, according to technical spirit of the present invention, above embodiment is done to any simple modification, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (5)
1. inorganic nano phase-changing energy storage material and preparation method thereof, it is characterized in that making the wall material with the inorganic nano rubber powder, make core with nanometer without salt hydrate, seal nano inorganic salt hydrate core by nanometer rubber powder wall material and form a kind of inorganic nano energy storage material, indication inorganic nano rubber powder refers to silica gel, the aluminum oxide powder formed by tetraethoxy and Aluminate hydrolysis, and tetraethoxy, Aluminate are amounted to into oxide compound and met Si
2/ Al
2o
3ratio between molecule is 1: 0.5, and indication nano inorganic salt hydrate refers to sodium-acetate hydrate NaCH
3cOO3H
2o; The weight ratio of wall material and core is 1: 1, product yardstick 58 nanometers, and 58 ℃ of transformation temperatures, the cooling curve proof is without crossing the cold-peace problem of phase separation; Storage density 320J/g; The capsule stable in properties, after carrying out 80 high temperature trickle circulations and 25 heating, freeze cycle, the matter loss is less than 1%, does not find that cold-peace was separated.
2. according to the preparation method of a kind of inorganic nano phase-changing energy storage material claimed in claim 1, it is characterized in that following these steps to processing:
(1) take technical grade acetic acid sodium hydrate NaCH
3cOO3H
2o is heated to 60 ℃, is mixed with saturated aqueous solution, adds the long-pending dehydrated alcohol of diploid, stirs and be quenched to 0-10 ℃, obtains nano-scale phase-changing energy storage material sodium-acetate hydrate NaCH
3cOO3H
2the O precipitation;
(2) will take tetraethoxy, Aluminate respectively, the mol ratio tetraethoxy: Aluminate=1: 0.5;
(3) respectively tetraethoxy and Aluminate are added to step (1) tetraethoxy and Aluminate weight sum and 3 water acetic acid sodium NaCH
3cOO3H
2the O weight ratio is 1: 1;
(4) step (3) mixture is stirred 2 hours with the 600-1000r/min rotating speed, make the nanometer wall material silica gel, aluminum oxide powder of hydrolysis by nano level 3 water acetic acid sodium NaCH
3cOO3H
2the O parcel;
(5) centrifuge dehydration, dehydration filtrate Distillation recovery ethanol, solid drying is product.
3. the preparation method of a kind of inorganic nano phase-changing energy storage material according to claim 2, is characterized in that the filtrate Distillation recovery ethanol after centrifuge dehydration.
4. the preparation method of a kind of inorganic nano phase-changing energy storage material according to claim 1, use while it is characterized in that designing for building materials according to parameter provided by the invention.
5. according to the application of the described a kind of inorganic nano phase-changing energy storage material of claim 1 or 1, its feature is mainly used in building that drying room is heat insulation, lagging material.
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| CN201310387329.3A CN103468218B (en) | 2013-08-30 | 2013-08-30 | A kind of Inorganic nano phase change energy storage material and preparation method thereof |
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| CN103468218A true CN103468218A (en) | 2013-12-25 |
| CN103468218B CN103468218B (en) | 2015-10-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180003446A1 (en) * | 2016-06-30 | 2018-01-04 | Kitagawa Industries Co., Ltd. | Method for manufacturing heat storage device, method for manufacturing heat storage material, heat storage material, and heat storage device |
| CN109674085A (en) * | 2017-10-18 | 2019-04-26 | 湖南中烟工业有限责任公司 | It is a kind of for reducing the heat accumulation capsule of cigarette mainstream flue gas temperature and its preparation and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6270836B1 (en) * | 1998-07-27 | 2001-08-07 | Frisby Technologies, Inc. | Gel-coated microcapsules |
| CN102311720A (en) * | 2010-07-02 | 2012-01-11 | 中国科学院大连化学物理研究所 | Phase-change energy storage capsule and preparation method thereof |
-
2013
- 2013-08-30 CN CN201310387329.3A patent/CN103468218B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6270836B1 (en) * | 1998-07-27 | 2001-08-07 | Frisby Technologies, Inc. | Gel-coated microcapsules |
| CN102311720A (en) * | 2010-07-02 | 2012-01-11 | 中国科学院大连化学物理研究所 | Phase-change energy storage capsule and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| J. ZHANG ET AL.,: "《In Situ Synthesis and Phase Change Properties of Na2SO4.10H2O@SiO2 Solid Nanobowls toward Smart Heat Storage》", 《THE JOURNAL OF PHYSICAL CHEMISTRY C》, vol. 115, no. 41, 1 September 2011 (2011-09-01) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180003446A1 (en) * | 2016-06-30 | 2018-01-04 | Kitagawa Industries Co., Ltd. | Method for manufacturing heat storage device, method for manufacturing heat storage material, heat storage material, and heat storage device |
| CN109674085A (en) * | 2017-10-18 | 2019-04-26 | 湖南中烟工业有限责任公司 | It is a kind of for reducing the heat accumulation capsule of cigarette mainstream flue gas temperature and its preparation and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103468218B (en) | 2015-10-21 |
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Address after: 550000 building, B building, Guiyang hi tech Industrial Park, Guiyang hi tech Industrial Development Zone, Guizhou, Guiyang, 7 Patentee after: Guizhou Zhongyi Low Carbon Energy Technology Co.,Ltd. Address before: Guiyang science and technology building, 2 No. 550001 Guizhou city of Guiyang province Jinyang new music road Patentee before: GUIZHOU ZHONGYINENG LOW CARBON ENERGY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20171011 Address after: 550000, Guizhou province Guiyang Guiyang high tech Industrial Development Zone Hubin Road No. 89 time Jun garden 2, 3, 1 units, 9 layers Patentee after: GUIZHOU ZHONGYINENG NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 550000 building, B building, Guiyang hi tech Industrial Park, Guiyang hi tech Industrial Development Zone, Guizhou, Guiyang, 7 Patentee before: Guizhou Zhongyi Low Carbon Energy Technology Co.,Ltd. |
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Granted publication date: 20151021 Termination date: 20200830 |