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CN103468216B - A kind of Phosphate inorganic nano phase change energy storage material and preparation method thereof - Google Patents

A kind of Phosphate inorganic nano phase change energy storage material and preparation method thereof Download PDF

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Publication number
CN103468216B
CN103468216B CN201310387281.6A CN201310387281A CN103468216B CN 103468216 B CN103468216 B CN 103468216B CN 201310387281 A CN201310387281 A CN 201310387281A CN 103468216 B CN103468216 B CN 103468216B
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energy storage
storage material
phase change
nano
inorganic
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CN103468216A (en
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李荣明
骆相全
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Guizhou Gausda New Material Technology Co ltd
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GUIZHOU ZHONGYINENG LOW CARBON ENERGY TECHNOLOGY Co Ltd
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Abstract

The present invention is a kind of Phosphate inorganic nano phase change energy storage material and preservation method thereof, belong to building low-carbon energy-saving technical field, by tetraethoxy, silica gel, zirconium white, the manganese dioxide powder of tetrabutyl zirconate and manganous nitrate hydrolysis, for nanometer rubber powder does wall material, be Sodium phosphate dibasic Na by nano inorganic salt hydrate 2hPO 412H 2o is core, and encapsulated the phosphate nano phase-changing energy storage material of core by wall material, transformation temperature 34.6 DEG C, capsule stable in properties, transformation temperature is suitable for does household phase-changing energy storage material very much.

Description

A kind of Phosphate inorganic nano phase change energy storage material and preparation method thereof
Technical field
The invention belongs to building low-carbon energy-saving technical field, specifically a kind of Phosphate inorganic nano phase change energy storage material and preparation method thereof.
Background technology
In physical environment, every day produces a large amount of heats, 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 itself undergone phase transition, and absorbs the material of these heats, and when needed to Environment release, and reach control ambient temperature and energy-conservation object.Can be divided into by its chemical constitution: organic phase change energy storage material, combined phase-change energy storage material and Inorganic phase change energy storage material.Organic phase change energy storage material has the advantages such as chemical stability is good, suitable phase transition temperature, nothing are separated, but organic phase change energy storage material thermal conductivity is lower, causes its heat transfer property in the application of accumulator system poor, thus reduces the usefulness of system; Combined phase-change energy storage material has advantage adjustable within the specific limits, but easily aging, after circulation several times, just lose energy storage effect; Inorganic phase change energy storage material has that use range is wide, thermal conductivity is large, heat of fusion is compared with advantages such as large, storage heat density is large, phase transformation volume change is little, toxicity is little, low prices, firmly get people's favor, therefore the Synthesis and applications of this kind of inorganic energy storage material is more and more in patent application, 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 change 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 change energy storage material and preparation method thereof ", application number 201210557115 etc.Usually there is cold, non-homogeneous melting and the phenomenon such as to be separated in Inorganic phase change energy storage material, cause should energy storage time not energy storage, should discharge can time do not discharge can, there is obvious layering in system, the large lossy of enthalpy of phase change.In order to solve the problem, contriver puts forward various plans, and as " a kind of heat-storage medium and uses thereof ", application number 200610104583.8, proposes magnesium nitrate, the salt water chemical compound of magnesium chloride and water composition eutectic, " a kind of Inorganic phase change energy storage material ", application number 201210037753.0, adopts 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, adopt in inorganic salt hydrate, add anti-cryogen sodium tetraborate excessively, although these methods have some effects, but be also confined to some system, certain limitation is there is at phase-changing energy storage material choice and operation, inventor studies discovery, inorganic salt hydrate phase-changing energy storage material is distributed to nano_scale particle, be rolled into capsule of nano, the mistake cold-peace problem of phase separation of phase-changing energy storage material can be solved well, contriver develops a series of nano inorganic phase-changing energy storage material according to this discovery and design, the present invention is exactly one of this Inorganic phase change energy storage material of exploitation.
Summary of the invention
Inorganic salt hydrate phase-changing energy storage material is the object of the invention is to be 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, develop a series of Inorganic phase change energy storage material unlike the prior art, meet different insulation, heat insulation, energy storage, temperature adjustment object is to the requirement of different inorganic phase-changing material performance.
A kind of Phosphate inorganic nano phase change energy storage material of the present invention does wall material with inorganic nano rubber powder, core is made with nano inorganic hydrous salt phase change material, wrap up nano inorganic salt hydrate phase change material core by nanometer rubber powder wall material and form inorganic nano energy storage material, indication inorganic adhesive powder is by tetraethoxy, silica gel, zirconium white, the manganese dioxide powder of tetrabutyl zirconate and manganous nitrate hydrolysis, folding synthesis oxide meets SiO 2/ ZrO 2/ MnO 2intermolecular ratio is 2: 0.5: 1, and the nano inorganic salt hydrate of indication is Sodium phosphate dibasic Na 2hPO 412H 2o, the weight ratio of wall material and core is 6: 4, product yardstick 80 nanometer, transformation temperature 34.6 DEG C; Cooling curve proves without crossing cold-peace problem of phase separation; Energy storage density 260J/g; Capsule stable in properties, insoluble in PH5-9 solution, after carrying out 80 high temperature trickle circulations and 25 heating frozen circulations, mass loss is less than 1%; Do not find that cold-peace was separated.
The preparation method of a kind of Phosphate inorganic nano phase change energy storage material of the present invention, follows these steps to processing successively:
(1) get industrial raw material 12 water Sodium phosphate dibasic to add water and be mixed with saturated aqueous solution, cross and filter impurity, filtrate adds the long-pending dehydrated alcohol of diploid, stirs, obtains nano-scale phase-changing Na 2hPO 412H 2o core precipitates;
(2) take tetraethoxy, tetrabutyl zirconate and manganous nitrate, folding synthesis oxide meets SiO 2/ ZrO 2/ MnO 2between point, ratio is 2: 0.5: 1;
(3) step (2) is taken thing and add step (1) one by one, limit edged stirs, and step (2) gained oxide compound gross weight and step (1) raw material weight ratio are 6: 4;
(4) mixture of step (3) is carried out stirring 1-3 hour at 600-1000r/min rotating speed, make nanometer wall material silica gel, zirconium white, Manganse Dioxide by nanometer core material Na 2hPO 412H 2o wraps up;
(5) centrifuge dehydration, solid drying is product.
Filtrate Distillation recovery ethanol after above-mentioned steps (5) centrifuge dehydration is separated.
The application of a kind of Phosphate inorganic nano phase change energy storage material of the present invention is for applying when building materials design according to parameter provided by the invention.Be mainly used in sandwich boards for construction, building materials weighting agent or be processed into section bar and go bail for temperature, heat insulation, energy storage is used.
The principle of the invention is with nano grade inorganic phase change material 12 water Sodium phosphate dibasic Na 2hPO 412H 2o is core, and with tetraethoxy, nano level silica gel is produced in tetrabutyl zirconate and manganous nitrate hydrolysis, and zirconium white and Manganse Dioxide, as wall material, wrap up nanometer grade inorganic salt phase-changing energy storage material 12 water Sodium phosphate dibasic Na by nano level rubber powder wall material 2hPO 412H 2o, overcomes phase-changing energy storage material 12 water Sodium phosphate dibasic Na 2hPO 412H 2excessively cold, the layering that O exists and the problems such as to be separated, thus make it to become stable phase-changing energy storage material, as house insulation, lagging material, due to 12 water Sodium phosphate dibasic Na 2hPO 412H 2o can separate out Na more than 30 DEG C 2hPO 47H 2o, the whole course of processing controls to carry out below 30 DEG C.
Invention effect:
1. product transformation temperature of the present invention 34.6 DEG C, storage density 160-500J/g, nontoxic, corrosion-free, be particularly suitable for house insulation, heat insulation, energy storage, temperature adjustment.
2. Product Process of the present invention is simple, and cost inferior quality is easily controlled, stable.
3. Reusability is without being separated.
4. the present invention is by rapid reaction, inorganic salt hydrate is dispersed into nano_scale particle rapidly, and is wrapped up by aluminum phosphate, inorganic salt crystal water not easily scatters and disappears, particulate molecular motion suffers restraints, and effectively controls the phenomenon that cold-peace is separated, and is a kind of well phase-changing energy storage material.
Accompanying drawing explanation
Fig. 1 is product of the present invention fusing--freezing curve, from figure, and product transformation temperature of the present invention 34.6 DEG C.
Embodiment
Embodiment 1
Follow these steps to processing:
(1) 400g industrial raw material 12 water Sodium phosphate dibasic Na is got 2hPO 412H 2o) add water and be mixed with saturated aqueous solution, cross and filter impurity, filtrate adds the long-pending dehydrated alcohol of diploid, stirs, obtains nano-scale phase-changing Na 2hPO 412H 2o core precipitates;
(2) tetraethoxy Si (OC is taken 2h 5) 4317g, tetrabutyl zirconate Zr (0C 4h 9) 4146g and manganous nitrate 136.2g, folding synthesis oxide meets SiO 2/ ZrO 2/mnO 2between point, ratio is 2: 0.5: 1;
(3) step (2) is taken thing and add step (1) one by one, limit edged stirs, and step (2) gained oxide compound gross weight and step (1) raw material weight ratio are 6: 4;
(4) mixture of step (3) is carried out stirring 2 hours with 600r/min rotating speed under 20 DEG C of conditions, make nanometer wall material silica gel, zirconium white, Manganse Dioxide by nanometer core material Na 2hPO 412H 2o wraps up;
(5) centrifuge dehydration, solid drying is product.Filtrate Distillation recovery ethanol.
The above, it is only preferred embodiment of the present invention, not any type of restriction is done to the present invention, any disengaging technical solution of the present invention content, according to technical spirit of the present invention, any simple modification, equivalent variations and modification are done to above embodiment, all belong in the scope of technical solution of the present invention.
The above, it is only preferred embodiment of the present invention, not any type of restriction is done to the present invention, any disengaging technical solution of the present invention content, according to technical spirit of the present invention, any simple modification, equivalent variations and modification are done to above embodiment, all belong in the scope of technical solution of the present invention.

Claims (4)

1. a Phosphate inorganic nano phase change energy storage material, it is characterized in that doing wall material with inorganic nano rubber powder, core is made with nano inorganic hydrous salt phase change material, wrap up nano inorganic salt hydrate phase change material core by nanometer rubber powder wall material and process inorganic nano energy storage material, indication inorganic adhesive powder is by tetraethoxy, silica gel, zirconium white, the manganese dioxide powder of tetrabutyl zirconate and manganous nitrate hydrolysis, folding synthesis oxide meets SiO 2/ ZrO 2/ MnO 2intermolecular ratio is 2: 0.5: 1, and the nano inorganic salt hydrate of indication is Sodium phosphate dibasic Na 2hPO 412H 2o, the weight ratio of wall material and core is 6: 4, product yardstick 80 nanometer, transformation temperature 34.6 DEG C; Cooling curve proves without crossing cold-peace problem of phase separation; Energy storage density 260J/g; Capsule stable in properties, after carrying out 80 high temperature trickle circulations and 25 heating frozen circulations, mass loss is less than 1%; Do not find that cold-peace was separated, working method follows these steps to processing successively:
(1) get industrial raw material 12 water Sodium phosphate dibasic to add water and be mixed with saturated aqueous solution, cross and filter impurity, filtrate adds the long-pending dehydrated alcohol of diploid, stirs, obtains nano-scale phase-changing Na 2hPO 412H 2o core precipitates;
(2) take tetraethoxy, tetrabutyl zirconate and manganous nitrate, folding synthesis oxide meets SiO 2/ ZrO 2/ MnO 2between point, ratio is 2: 0.5: 1;
(3) step (2) is taken thing and add step (1) one by one, limit edged stirs, and step (2) gained oxide compound gross weight and step (1) raw material weight ratio are 6: 4;
(4) mixture of step (3) is carried out stirring 1-3 hour at 600-1000r/min rotating speed, make nanometer wall material silica gel, zirconium white, Manganse Dioxide by nanometer core material Na 2hPO 412H 2o wraps up;
(5) centrifuge dehydration, solid drying is product.
2. a kind of Phosphate inorganic nano phase change energy storage material as claimed in claim 1, it is characterized in that process steps (5) centrifuge dehydration be separated after centrifugate Distillation recovery ethanol.
3., according to a kind of described in claim 1 application of Phosphate inorganic nano phase change energy storage material, it is characterized in that the parameter provided according to described Phosphate inorganic nano phase change energy storage material is for applying when building materials design.
4. the application of a kind of Phosphate inorganic nano phase change energy storage material according to claim 3, is characterized in that being mainly used in sandwich boards for construction, building materials weighting agent or be processed into section bar and go bail for temperature, and heat insulation, energy storage is used.
CN201310387281.6A 2013-08-30 2013-08-30 A kind of Phosphate inorganic nano phase change energy storage material and preparation method thereof Expired - Fee Related CN103468216B (en)

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CN107556970B (en) * 2017-08-15 2020-09-22 河北炫坤节能科技股份有限公司 Phase-change microcapsule of inorganic metal oxide coated hydrous salt and preparation method thereof
CN108484024A (en) * 2018-03-09 2018-09-04 湖北工业大学 A kind of preparation method of the early strong frost-resistant concrete of the micro-nano heat accumulation capsule of addition
CN109135683B (en) * 2018-08-22 2021-01-12 北京科技大学 Method for preparing molten salt-ceramic phase change heat storage material
CN109082267B (en) * 2018-10-11 2021-04-06 上海第二工业大学 A method of adding manganese dioxide particles to improve the thermal properties of n-octadecane/polystyrene phase change microcapsules
CN112375545B (en) * 2020-11-16 2021-07-02 桂林电子科技大学 A kind of manganese dioxide-melamine formaldehyde resin double shell composite phase change material and preparation method thereof

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