CN109370534A - A kind of phase change heat storage material and preparation method thereof - Google Patents
A kind of phase change heat storage material and preparation method thereof Download PDFInfo
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- CN109370534A CN109370534A CN201811381454.2A CN201811381454A CN109370534A CN 109370534 A CN109370534 A CN 109370534A CN 201811381454 A CN201811381454 A CN 201811381454A CN 109370534 A CN109370534 A CN 109370534A
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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Abstract
The invention discloses a kind of phase change heat storage materials and preparation method thereof, the present invention is using sodium acetate trihydrate as basis material, formamide is temperature regulator, sodium carboxymethylcellulose or polyvinyl alcohol are thickener, disodium hydrogen phosphate is nucleating agent, by grinding, fusing, the series of process such as stirring, it is cooled to room temperature to form phase change heat storage material in a reservoir, sodium acetate trihydrate is modified by each additive, manufactured phase change heat storage material has lesser degree of supercooling, enthalpy of phase change is big, stability is high, eliminate phenomenon of phase separation, and preparation process is simple, convenient for encapsulating and producing, improve production efficiency, improve income.
Description
Technical field
The present invention relates to a kind of phase change heat storage material field, specifically a kind of phase change heat storage materials and preparation method thereof.
Background technique
Energy storage materials of phase change, abbreviation PCM.So-called phase-change accumulation energy refers to that substance absorbs during phase change or discharge energy
Amount.Exactly this characteristic constitutes phase-changing energy storage material with widely applied theoretical basis.Phase-change material is from liquid to solid-state
When transformation, the variation of physical state is undergone.In both phase transition process, material will absorb heat from environment, conversely, to environment
Heat release.The energy that can be stored or discharge when physical state changes is known as the heat of transformation, and the temperature range undergone phase transition is very narrow.
When physical state changes, the temperature of material itself almost remains unchanged before phase transformation is completed.A large amount of heat of transformations are transferred to ring
When in border, a wide temperature platform is produced.The appearance of phase transformation material, embodies the extension of constant temperature time, and can with sensible heat and
Insulating materials is in thermal cycle, storage or release sensible heat.Its principle is: phase-change material stores up energy in the transmission process of heat
It stores away, the energy transmission time can be extended just as thermal resistance, reduce temperature gradient.But the phase transformation used on the market
Heat-storing material fabrication cycle is long, at high cost, and process is tedious, cannot large batch of production preparation, production efficiency is low, and practicability is inadequate
It is good.
Summary of the invention
The purpose of the present invention is to provide a kind of phase change heat storage materials and preparation method thereof, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of phase change heat storage material, the material is at least by sodium acetate trihydrate, formamide, sodium carboxymethylcellulose and phosphoric acid
Disodium hydrogen composition, each raw material account for the mass percent of raw material total amount are as follows: sodium acetate trihydrate is 80%-93% parts, formamide
For 5%-15 parts of %, sodium carboxymethylcellulose be 1%-3 parts of %, disodium hydrogen phosphate is 1%-3 parts of %；
A kind of preparation method of phase change heat storage material, specific preparation process is as follows:
S1, suitable sodium acetate trihydrate, sodium carboxymethylcellulose and disodium hydrogen phosphate are taken according to component ratio, respectively will
These types of raw material grinding uniformly obtains solid mixture；
S2, solid mixture obtained in step S1 is put into constant temperature bath and is heated, then to solid mixture
Formamide is added in the container of placement in proportion, later seals container, make each component be completely melt become liquid, and to its into
Row uniform stirring, forms colloidal liquid later；
S3, the colloidal liquid of receptacle is taken out, injects in clean container after stirring evenly, is reserved in container
A certain amount of expansion space, gelatinous congruent melting, which is blended in container, forms phase change heat storage material.
As a further solution of the present invention: the sodium carboxymethylcellulose can be replaced with polyvinyl alcohol.
As a further solution of the present invention: the temperature control in the step S2 inside constant temperature bath is Celsius in 55-80
In the range of degree.
As a further solution of the present invention: the volume injected in the step S3 is the 85-95% of container volume, is held
The expansion space of 5-15% is stayed in device.
As a further solution of the present invention: the phase transformation enthalpy of phase change heat storage material obtained is 236- in the step S3
253 kilojoule per kilogram, phase transition temperature is 48-53 degrees Celsius, and degree of supercooling is less than 3 degrees Celsius.
As the present invention further scheme: sodium acetate trihydrate in phase change heat storage material obtained in the step S3
For basis material, formamide is temperature regulator, and sodium carboxymethylcellulose is thickener, and disodium hydrogen phosphate is nucleating agent.
Compared with prior art, the beneficial effects of the present invention are: the present invention is using sodium acetate trihydrate as basis material, formyl
Amine is temperature regulator, and sodium carboxymethylcellulose or polyvinyl alcohol are thickener, and disodium hydrogen phosphate is nucleating agent, by grinding,
The series of process such as fusing, stirring, are cooled to room temperature to form phase change heat storage material in a reservoir, and sodium acetate trihydrate is by each
Additive it is modified, manufactured phase change heat storage material has lesser degree of supercooling, and enthalpy of phase change is big, and stability is high, eliminates phase
Segregation phenomenon, and preparation process is simple, convenient for encapsulation and production, improves production efficiency, improves income.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
In the embodiment of the present invention, a kind of phase change heat storage material, the material is at least by sodium acetate trihydrate, formamide, carboxylic first
Base sodium cellulosate and disodium hydrogen phosphate composition, each raw material accounts for the mass percent of raw material total amount are as follows: sodium acetate trihydrate is
80%-93% parts, formamide be 5%-15 parts of %, sodium carboxymethylcellulose is 1%-3 parts of %, disodium hydrogen phosphate 1%-3
Part %.
Embodiment 1
A kind of preparation method of phase change heat storage material, specific preparation process is as follows:
S1, suitable sodium acetate trihydrate, sodium carboxymethylcellulose and disodium hydrogen phosphate are taken according to component ratio, respectively will
These types of raw material grinding uniformly obtains solid mixture；
S2, solid mixture obtained in step S1 is put into constant temperature bath and is heated, then to solid mixture
Formamide is added in the container of placement in proportion, sodium acetate trihydrate, formamide, sodium carboxymethylcellulose and phosphorus in the container
The ratio of sour disodium hydrogen is 85.5:10:3:1.5, later seals container, makes each component be completely melt to become liquid, and to it
Uniform stirring is carried out, forms colloidal liquid later, the temperature inside constant temperature bath is controlled at 55-80 degrees Celsius；
S3, the colloidal liquid of receptacle is taken out, is injected in clean container after stirring evenly, the volume of injection
It is the 92% of container volume, 8% expansion space is stayed in container, gelatinous congruent melting, which is blended in container, forms phase-transition heat-storage material
Material, the phase transformation enthalpy for being tested phase change heat storage material made from the present embodiment is 254 kilojoule per kilogram, and phase transition temperature is 52 Celsius
Degree, degree of supercooling are 1.4 degrees Celsius, and sodium acetate trihydrate is basis material in phase change heat storage material obtained, and formamide is temperature
Regulator, sodium carboxymethylcellulose are thickener, and disodium hydrogen phosphate is nucleating agent, and wherein sodium carboxymethylcellulose can use poly- second
Enol replaces, and sodium acetate trihydrate is modified by each additive, and manufactured phase change heat storage material has lesser supercooling
Degree, enthalpy of phase change is big, and stability is high, eliminates phenomenon of phase separation, and preparation process is simple, convenient for encapsulation and production, improves life
Efficiency is produced, income is improved.
Embodiment 2
A kind of preparation method of phase change heat storage material, specific preparation process is as follows:
S1, suitable sodium acetate trihydrate, sodium carboxymethylcellulose and disodium hydrogen phosphate are taken according to component ratio, respectively will
These types of raw material grinding uniformly obtains solid mixture；
S2, solid mixture obtained in step S1 is put into constant temperature bath and is heated, then to solid mixture
Formamide is added in the container of placement in proportion, sodium acetate trihydrate, formamide, sodium carboxymethylcellulose and phosphorus in the container
The ratio of sour disodium hydrogen is 83:13:2:2, later seals container, makes each component be completely melt to become liquid, and carry out to it
Uniform stirring forms colloidal liquid later, and the temperature inside constant temperature bath is controlled at 55-80 degrees Celsius；
S3, the colloidal liquid of receptacle is taken out, is injected in clean container after stirring evenly, the volume of injection
It is the 92% of container volume, 8% expansion space is stayed in container, gelatinous congruent melting, which is blended in container, forms phase-transition heat-storage material
Material, the phase transformation enthalpy for being tested phase change heat storage material made from the present embodiment is 254 kilojoule per kilogram, and phase transition temperature is 52 Celsius
Degree, degree of supercooling are 1.4 degrees Celsius, and sodium acetate trihydrate is basis material in phase change heat storage material obtained, and formamide is temperature
Regulator, sodium carboxymethylcellulose are thickener, and disodium hydrogen phosphate is nucleating agent, and wherein sodium carboxymethylcellulose can use poly- second
Enol replaces.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of phase change heat storage material, is characterized in that, the material is at least by sodium acetate trihydrate, formamide, carboxymethyl cellulose
Sodium and disodium hydrogen phosphate composition, each raw material account for the mass percent of raw material total amount are as follows: sodium acetate trihydrate 80%-93%
Part, formamide are 5%-15 parts of %, sodium carboxymethylcellulose is 1%-3 parts of %, disodium hydrogen phosphate is 1%-3 parts of %.
2. a kind of a kind of preparation method of phase change heat storage material as described in claim 1, which is characterized in that its specific preparation step
It is rapid as follows:
S1, suitable sodium acetate trihydrate, sodium carboxymethylcellulose and disodium hydrogen phosphate are taken according to component ratio, it is respectively that this is several
Kind raw material grinding uniformly obtains solid mixture；
S2, solid mixture obtained in step S1 is put into constant temperature bath and is heated, then placed to solid mixture
Container in add formamide in proportion, container is sealed later, makes each component be completely melt to become liquid, and it is carried out
Even stirring, forms colloidal liquid later；
S3, the colloidal liquid of receptacle is taken out, is injected in clean container after stirring evenly, reserved in container certain
The expansion space of amount, gelatinous congruent melting, which is blended in container, forms phase change heat storage material.
3. a kind of preparation method of phase change heat storage material according to claim 2, which is characterized in that permanent in the step S2
Temperature inside warm bath pot controls in the range of 55-80 degrees Celsius.
4. a kind of preparation method of phase change heat storage material according to claim 2, which is characterized in that infused in the step S3
The volume entered is the 85-95% of container volume, and the expansion space of 5-15% is stayed in container.
5. a kind of preparation method of phase change heat storage material according to claim 2, which is characterized in that made in the step S3
The phase transformation enthalpy of the phase change heat storage material obtained is 236-253 kilojoule per kilogram, and phase transition temperature is 48-53 degrees Celsius, and degree of supercooling is less than
3 degrees Celsius.
6. a kind of preparation method of phase change heat storage material according to claim 2, which is characterized in that made in the step S3
Sodium acetate trihydrate is basis material in the phase change heat storage material obtained, and formamide is temperature regulator, and sodium carboxymethylcellulose is
Thickener, disodium hydrogen phosphate are nucleating agent.
7. a kind of preparation method of phase change heat storage material according to claim 2, which is characterized in that the step S1, step
Sodium carboxymethylcellulose in rapid S2 and S3 can be replaced with polyvinyl alcohol.
8. a kind of phase change heat storage material according to claim 1, which is characterized in that the sodium carboxymethylcellulose can be used
Polyvinyl alcohol replaces.
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| CN201811381454.2A CN109370534A (en) | 2018-11-21 | 2018-11-21 | A kind of phase change heat storage material and preparation method thereof |
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| CN201811381454.2A CN109370534A (en) | 2018-11-21 | 2018-11-21 | A kind of phase change heat storage material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527497A (en) * | 2019-09-24 | 2019-12-03 | 珠海格力电器股份有限公司 | A kind of composite phase-change energy storage material and preparation method thereof |
| CN111117572A (en) * | 2019-12-05 | 2020-05-08 | 珠海格力电器股份有限公司 | Composite phase-change material and preparation method thereof |
| CN112480876A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Phase change heat storage material compounded by sodium acetate trihydrate and disodium hydrogen phosphate dodecahydrate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108485611A (en) * | 2018-06-12 | 2018-09-04 | 江苏星云物联科技有限公司 | A kind of phase change heat storage material and preparation method thereof |
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2018
- 2018-11-21 CN CN201811381454.2A patent/CN109370534A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108485611A (en) * | 2018-06-12 | 2018-09-04 | 江苏星云物联科技有限公司 | A kind of phase change heat storage material and preparation method thereof |
Non-Patent Citations (1)
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| 方玉堂等: "《三水醋酸钠/甲酰胺复合相变材料的制备及性能》", 《化工学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527497A (en) * | 2019-09-24 | 2019-12-03 | 珠海格力电器股份有限公司 | A kind of composite phase-change energy storage material and preparation method thereof |
| CN111117572A (en) * | 2019-12-05 | 2020-05-08 | 珠海格力电器股份有限公司 | Composite phase-change material and preparation method thereof |
| CN112480876A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Phase change heat storage material compounded by sodium acetate trihydrate and disodium hydrogen phosphate dodecahydrate |
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