CN109370536A - Composite phase-change heat-storage material, preparation method and thermal insulation material - Google Patents
Composite phase-change heat-storage material, preparation method and thermal insulation material Download PDFInfo
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- CN109370536A CN109370536A CN201811405095.XA CN201811405095A CN109370536A CN 109370536 A CN109370536 A CN 109370536A CN 201811405095 A CN201811405095 A CN 201811405095A CN 109370536 A CN109370536 A CN 109370536A
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- storage material
- change heat
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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 composite phase-change heat-storage material, preparation method and thermal insulation materials, the described method includes: Sodium acetate trihydrate, urea, disodium hydrogen phosphate, sodium carboxymethylcellulose powder are uniformly mixed；Uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until being melted into clear gum liquid；Clear gum liquid is heated and stirred in water bath with thermostatic control；Will be cooling under the conditions of the clear gum liquid constant temperature being stirred, obtain composite phase-change heat-storage material.The composite phase-change heat-storage material remains the original latent heat of phase change value of Sodium acetate trihydrate, or even slightly improves, and eliminate degree of supercooling and phenomenon of phase separation, improves thermal conductivity of material.Controllable using reaction condition of the embodiment of the present invention, equipment requirement is simple, it is easy to accomplish batch production is conducive to steadily store thermal energy, improves heat utilization rate and protection environment.
Description
Technical field
The present invention relates to technical field of phase change energy storage more particularly to a kind of composite phase-change heat-storage materials, preparation method and guarantor
Adiabator.
Background technique
As solar energy is in the rapid development of new energy field, more deep, the solar energy studied with each side learner
It is play an important role in new energy field, the optimal alternative energy source in the whole world will be become.During the utilization of solar energy,
It is easy to be influenced by factors such as time, weather and seasons, to be carried out continuously the utilization of solar energy can, the storage of solar energy
It is particularly important.Of greatest concern in solar energy utilization technique is phase-change thermal storage technology.And phase-change material Sodium acetate trihydrate
(CH3COONa·3H2O, SAT) be used as a kind of inorganic hydrous salt phase transition energy-storing material, due to its suitable phase transition temperature (58 DEG C),
Higher latent heat of phase change (254J/g), it is nontoxic, environmentally friendly, cheap the advantages that have been to be concerned by more and more people.So
And the disadvantages of degree of supercooling of Sodium acetate trihydrate is larger, thermal conductance is lower and mutually separates, it limits Sodium acetate trihydrate and is stored up as phase transformation
The application of hot material.Therefore how research makes Sodium acetate trihydrate improve potential heat value, reduce supercooling, improve thermal conductivity, eliminate phase point
From the research hotspot for becoming research Sodium acetate trihydrate material.The current correlative study in relation to improving latent heat by additive.
The research mutually separated about reduction Sodium acetate trihydrate degree of supercooling, raising thermal conductivity, elimination at present, but result is all
Latent heat of phase change value can be reduced, makes up other deficiencies to lose a part of latent heat of phase change.
Therefore a kind of easy to operate, inexpensive, high yield, the preparation method of high performance composite phase-change heat-storage material are developed
It is of great significance.
Summary of the invention
The object of the present invention is to provide a kind of composite phase-change heat-storage material, preparation method and thermal insulation materials, and the phase can mention
High potential heat value reduces supercooling, improves thermal conductivity, eliminates mutually separation and easy to operate, inexpensive, high yield, high-performance.
To achieve the above object, the present invention provides a kind of preparation method of composite phase-change heat-storage material, comprising: by three water vinegar
Sour sodium, urea, disodium hydrogen phosphate, sodium carboxymethylcellulose powder uniformly mix；
Uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until being melted into clear gum liquid；
Clear gum liquid is heated and stirred in water bath with thermostatic control；
Will be cooling under the conditions of the clear gum liquid constant temperature being stirred, obtain composite phase-change heat-storage material.
Preferably, Sodium acetate trihydrate, urea, disodium hydrogen phosphate, sodium carboxymethylcellulose powder are uniformly mixed
The step of include:
By mass ratio are as follows: the Sodium acetate trihydrate 92-95%, the urea 0.1-0.5%, ten hydrogen phosphate dihydrate two
The powder of sodium 3.5-4.5% and the sodium carboxymethylcellulose 2-4% uniformly mix.
Specifically, uniformly mixed powder is carried out heating water bath under constant temperature conditions, until being melted into clear gum liquid
The step of body, comprising:
The uniformly mixed powder is subjected to heating water bath in 75 DEG C -85 DEG C of heated at constant temperature slot, the time is 1~2
Hour, until being melted into clear gum liquid.
Preferably, uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until being melted into clear gum liquid
The step of body includes:
It is described that uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until it is melted into clear gum liquid,
Wherein, hot bath liquid level is higher than the top surface of the mixed-powder.
Preferably, by clear gum liquid the step of water bath with thermostatic control is heated and is stirred, comprising:
The clear gum liquid is stirred under the conditions of 75 DEG C of -85 DEG C of waters bath with thermostatic control, wherein mixing time is 3~5 points
Clock.
Preferably, will be cooling under the conditions of the clear gum liquid constant temperature being stirred, it obtains based on the compound of Sodium acetate trihydrate
The step of phase-change heat-storage material, comprising:
The clear gum liquid being stirred is cooling under 15 DEG C -25 DEG C of constant temperature, cooling time 55-65
Minute, obtain the composite phase-change heat-storage material based on Sodium acetate trihydrate.
The present invention also provides a kind of materials, comprising: Sodium acetate trihydrate, urea, disodium hydrogen phosphate, carboxymethyl are fine
Tie up plain sodium, wherein the mass ratio of the Sodium acetate trihydrate is 92-95%, the mass ratio of the urea is 0.1-0.5%, described
Mass ratio be disodium hydrogen phosphate 3.5-4.5% and the mass ratio of the sodium carboxymethylcellulose 2-4% is.
And a kind of thermal insulation material, the preparation method of the composite phase-change heat-storage material of Sodium acetate trihydrate are formed by compound phase
Change heat storage material.
The present invention provides a kind of composite phase-change heat-storage material, preparation method and thermal insulation material, prepared composite phase-change
Heat accumulating remains the original latent heat of phase change value of Sodium acetate trihydrate, or even slightly improves, and eliminate degree of supercooling with mutually divide
From phenomenon, thermal conductivity of material is improved.A kind of preparation method reaction condition of the composite phase-change heat-storage material of Sodium acetate trihydrate can
Control, equipment requirement are simple, it is easy to accomplish batch production is conducive to steadily store thermal energy, improves heat utilization rate and protection ring
Border.
Detailed description of the invention
Fig. 1 is the flow diagram of the composite phase-change heat-storage material preparation method of the embodiment of the present invention.
Fig. 2 is the differential scanning calorimetry figure of composite phase-change heat-storage material provided by the invention.
Fig. 3 is the cooling curve figure of composite phase-change heat-storage material provided by the invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Please refer to Fig. 1-3.It should be noted that only the invention is illustrated in a schematic way for diagram provided in the present embodiment
Basic conception, only shown in schema then with related component in the present invention rather than component count, shape when according to actual implementation
Shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its component cloth
Office's kenel may also be increasingly complex.
As shown in Figure 1, a kind of preparation method of composite phase-change heat-storage material provided by the invention, comprising:
S101 uniformly mixes Sodium acetate trihydrate, urea, disodium hydrogen phosphate, sodium carboxymethylcellulose powder.
Uniformly mixed powder is carried out heating water bath, until being melted into clear gum liquid by S102 under constant temperature conditions.
Clear gum liquid is heated and is stirred in water bath with thermostatic control by S103.
S104, will be cooling under the conditions of the clear gum liquid constant temperature being stirred, and obtains the compound phase based on Sodium acetate trihydrate
Change heat storage material.
Embodiment 1
By mass ratio are as follows: the Sodium acetate trihydrate 93%, the urea 0.1%, the disodium hydrogen phosphate 3.9%
It is uniformly mixed with the powder of the sodium carboxymethylcellulose 3%；
The uniformly mixed powder is subjected to heating water bath in 75 DEG C of heated at constant temperature slot, the time is 1 hour, until
It is melted into clear gum liquid；
Clear gum liquid is stirred under the conditions of 75 DEG C of waters bath with thermostatic control, wherein mixing time is 3 minutes；
The clear gum liquid being stirred is cooling under 15 DEG C of constant temperature, and cooling time is 55 minutes, obtains base
In the composite phase-change heat-storage material of Sodium acetate trihydrate.
Embodiment 2
A kind of preparation method of composite phase-change heat-storage material provided by the invention, comprising:
By mass ratio are as follows: the Sodium acetate trihydrate 92%, the urea 0.5%, the disodium hydrogen phosphate 3.5%
It is uniformly mixed with the powder of the sodium carboxymethylcellulose 4%；
Uniformly mixed powder is subjected to heating water bath in 80 DEG C of heated at constant temperature slot, the time is 1.5 hours, until melting
It is melted into clear gum liquid, wherein hot bath liquid level is higher than the top surface of mixed-powder；
Clear gum liquid is stirred under the conditions of 80 DEG C of waters bath with thermostatic control, wherein mixing time is 4 minutes；
The clear gum liquid being stirred is cooling under 20 DEG C of constant temperature, and cooling time is 60 minutes, obtains base
In the composite phase-change heat-storage material of Sodium acetate trihydrate.
Embodiment 3
A kind of preparation method of composite phase-change heat-storage material provided by the invention, comprising:
By mass ratio are as follows: Sodium acetate trihydrate 93.8%, urea 0.2%, disodium hydrogen phosphate 4% and carboxymethyl it is fine
The powder for tieing up plain sodium 2% uniformly mixes；
Uniformly mixed powder is subjected to heating water bath in 85 DEG C of heated at constant temperature slot, the time is 2 hours, until melting
At clear gum liquid, wherein hot bath liquid level is higher than the top surface of mixed-powder；
Clear gum liquid is stirred under the conditions of 85 DEG C of waters bath with thermostatic control, wherein mixing time is 5 minutes；
The clear gum liquid being stirred is cooling under 25 DEG C of constant temperature, and cooling time is 65 minutes, obtains base
In the composite phase-change heat-storage material of Sodium acetate trihydrate.
Embodiment 4
A kind of preparation method of composite phase-change heat-storage material provided by the invention, comprising:
By mass ratio are as follows: Sodium acetate trihydrate 94.4%, urea 0.1%, disodium hydrogen phosphate 3.5% and carboxymethyl
The powder of sodium cellulosate 2% uniformly mixes；
Uniformly mixed powder is subjected to heating water bath in 85 DEG C of heated at constant temperature slot, the time is 2 hours, until melting
At clear gum liquid, wherein hot bath liquid level is higher than the top surface of mixed-powder；
Clear gum liquid is stirred under the conditions of 85 DEG C of waters bath with thermostatic control, wherein mixing time is 5 minutes；
The clear gum liquid being stirred is cooling under 25 DEG C of constant temperature, and cooling time is 65 minutes, obtains base
In the composite phase-change heat-storage material of Sodium acetate trihydrate.
The fusion temperature of composite phase-change heat-storage material provided by the invention is 58 DEG C, with pure Sodium acetate trihydrate phase transformation without change
Change；Latent heat of fusion value is 260~270J/g, and the latent heat of phase change value (Sodium acetate trihydrate 254J/g) than raw material slightly improves；It crosses
Cold degree is 0 DEG C, completely eliminates degree of supercooling；Thermal coefficient be 1.691~1.896W/ (mK), about than raw material 1.212~
The thermal coefficient of 1.485W/ (mK) is high by 30.7%.A kind of composite phase-change heat-storage material provided by the invention improves three water vinegar
The former latent heat of phase change value of sour sodium, and essentially eliminate supercooling and phenomenon of phase separation.Reaction condition is mildly controllable, the equipment needed
It is fairly simple, it is easy to accomplish low cost is produced in enormous quantities, and low in the pollution of the environment, preparation process whole process is environmentally protective.What is provided is compound
In phase-change heat-storage material, every distributed components, phase-change thermal storage function admirable.It is as shown in table 1:
Table 1
Illustratively,
Weigh Sodium acetate trihydrate 46.9g, urea powder 0.1g, disodium hydrogen phosphate 1g and sodium carboxymethylcellulose
2g is placed in a beaker, and is stirred evenly with glass bar；
Beaker is sealed with preservative film, hand concussion 1~3 minute；
Uniform mixed-powder will be shaken heating water bath 1~2 hour under 80 DEG C of constant temperatures of heated at constant temperature slot, melted extremely
Clear gum liquid；
Clear gum liquid glass bar is stirred 3~5 minutes under 80 DEG C of water bath with thermostatic control heating conditions；
The clear gum liquid being stirred is cooling under 20 DEG C of constant temperatures of low temperature thermostat bath, it obtains based on acetate trihydrate
The composite phase-change heat-storage material of sodium.
The fusion temperature of composite phase-change heat-storage material prepared by the present invention based on Sodium acetate trihydrate is 58 DEG C；Such as Fig. 2 and
Shown in Fig. 3, latent heat of fusion value is 260~270J/g；Degree of supercooling is 0 DEG C；Thermal coefficient is 1.691~1.896W/ (mK).
Using the embodiment of the present invention, improve the former latent heat of phase change value of Sodium acetate trihydrate, and essentially eliminate supercooling and
Phenomenon of phase separation.Reaction condition is mildly controllable, and the equipment needed is fairly simple, it is easy to accomplish low cost is produced in enormous quantities, environment
Pollution is few, and preparation process whole process is environmentally protective.In the composite phase-change heat-storage material based on Sodium acetate trihydrate provided, every ingredient
It is evenly distributed, phase-change thermal storage function admirable.
The present invention also provides a kind of materials, comprising: Sodium acetate trihydrate, urea, disodium hydrogen phosphate, carboxymethyl are fine
Tie up plain sodium, wherein the mass ratio of the Sodium acetate trihydrate is 93.8%, the mass ratio of the urea is 0.2%, 12 water
The mass ratio of disodium hydrogen phosphate is 4%, and the mass ratio of the sodium carboxymethylcellulose is 2%.
The present invention also provides a kind of thermal insulation materials, include the composite phase-change heat-storage material based on Sodium acetate trihydrate
Preparation method is formed by composite phase-change heat-storage material.
Any person skilled in the art all without departing from the spirit and scope of the present invention, carries out above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed spirit with
All equivalent modifications completed under technical idea or change should be covered by the claims of the present invention.
Claims (8)
1. a kind of preparation method of composite phase-change heat-storage material, which is characterized in that the described method includes:
Sodium acetate trihydrate, urea, disodium hydrogen phosphate, sodium carboxymethylcellulose powder are uniformly mixed；
Uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until being melted into clear gum liquid；
The clear gum liquid is heated and stirred in water bath with thermostatic control；
Will be cooling under the conditions of the clear gum liquid constant temperature being stirred, obtain the composite phase-change heat-storage based on Sodium acetate trihydrate
Material.
2. a kind of preparation method of composite phase-change heat-storage material according to right 1, which is characterized in that described by acetate trihydrate
Sodium, urea, disodium hydrogen phosphate, the mixed uniformly step of sodium carboxymethylcellulose powder include:
By mass ratio are as follows: the Sodium acetate trihydrate 92-95%, the urea 0.1-0.5%, the disodium hydrogen phosphate
The powder of 3.5-4.5% and the sodium carboxymethylcellulose 2-4% uniformly mix.
3. a kind of preparation method of composite phase-change heat-storage material according to right 1, which is characterized in that described to be uniformly mixed
Powder carry out heating water bath under constant temperature conditions, until the step of be melted into clear gum liquid, comprising:
The uniformly mixed powder is subjected to heating water bath in 75 DEG C -85 DEG C of heated at constant temperature slot, the time is 1~2 hour,
Until being melted into the clear gum liquid.
4. a kind of preparation method of composite phase-change heat-storage material according to right 3, which is characterized in that described to be uniformly mixed
Powder carry out heating water bath under constant temperature conditions, until the step of being melted into clear gum liquid, includes:
It is described that uniformly mixed powder is subjected to heating water bath under constant temperature conditions, until it is melted into the clear gum liquid,
Wherein, hot bath liquid level is higher than the top surface of mixed-powder.
5. a kind of preparation method of composite phase-change heat-storage material according to right 1, which is characterized in that described by clear gum liquid
Body is the step of water bath with thermostatic control is heated and is stirred, comprising:
The clear gum liquid is stirred under the conditions of 75 DEG C of -85 DEG C of waters bath with thermostatic control, wherein mixing time is 3~5 minutes.
6. a kind of preparation method of composite phase-change heat-storage material according to right 1, which is characterized in that described to be stirred
The step of being cooled down under the conditions of clear gum liquid constant temperature, obtaining the composite phase-change heat-storage material based on Sodium acetate trihydrate, comprising:
The clear gum liquid being stirred is cooling under 15 DEG C -25 DEG C of constant temperature, and cooling time is 55-65 points
Clock obtains the composite phase-change heat-storage material based on Sodium acetate trihydrate.
7. a kind of composite phase-change heat-storage material characterized by comprising Sodium acetate trihydrate, urea, disodium hydrogen phosphate,
Sodium carboxymethylcellulose, wherein the mass ratio of the Sodium acetate trihydrate is 92-95%, the mass ratio of the urea is 0.1-
0.5%, the mass ratio is the quality of disodium hydrogen phosphate 3.5-4.5% and the sodium carboxymethylcellulose 2-4%
Than for.
8. a kind of thermal insulation material, which is characterized in that include the system by any one of the claim 1-6 composite phase-change heat-storage material
Preparation Method is formed by composite phase-change heat-storage material.
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Cited By (6)
| 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 | 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 |
| WO2020232974A1 (en) * | 2019-05-20 | 2020-11-26 | 华南理工大学 | Controllable phase-change material package and preparation method therefor and application 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 |
| CN112940685A (en) * | 2019-12-10 | 2021-06-11 | 强野机械科技(上海)有限公司 | Phase-change energy storage material and preparation method thereof |
| CN115287048A (en) * | 2022-08-15 | 2022-11-04 | 广西大学 | Stable sodium acetate trihydrate supercooling solution and preparation method and application thereof |
-
2018
- 2018-11-23 CN CN201811405095.XA patent/CN109370536A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020232974A1 (en) * | 2019-05-20 | 2020-11-26 | 华南理工大学 | Controllable phase-change material package and preparation method therefor and application thereof |
| CN110527497A (en) * | 2019-09-24 | 2019-12-03 | 珠海格力电器股份有限公司 | 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 |
| CN112940685A (en) * | 2019-12-10 | 2021-06-11 | 强野机械科技(上海)有限公司 | Phase-change energy storage 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 |
| CN115287048A (en) * | 2022-08-15 | 2022-11-04 | 广西大学 | Stable sodium acetate trihydrate supercooling solution and preparation method and application thereof |
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