CN104559936B - A kind of medium temperature phase change heat storage material and preparation method thereof - Google Patents
A kind of medium temperature phase change heat storage material and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of medium temperature phase change heat storage material and preparation method thereof, the medium temperature is made up of with phase change heat storage material the material component of following weight content：Adipic acid 80~90%, rare earth oxide 5~10%, graphene 5~10%, and binding agent, the quality of the binding agent are the 3% of adipic acid, rare earth oxide and graphene three's gross mass.Its preparation method is：(1) medium temperature will be prepared to be weighed according to quality proportioning with the raw material of phase change heat storage material；(2) by hexanedioic acid, rare earth oxide and graphene mechanical mixture, it is fitted into after well mixed in crucible, is put into vacuum drying chamber, melting absorption 6 hours at a temperature of 150~160 DEG C；(3) mix binding agent and carry out compression molding, that is, obtain the medium temperature phase change heat storage material.The present invention prepares medium temperature phase change heat storage material by simple process, with short production cycle, and the phase change heat storage material heat conductivility and thermal stability that prepare are good.
Description
Technical field
The invention belongs to energy-accumulation material technical field, is related to one kind using adipic acid as heat-storing material, and rare earth oxide is to change
Property agent, graphene for enhanced thermal conduction material medium temperature phase change heat storage material and preparation method thereof.
Background technology
Heat storage technology utilizes the conversion of material internal energy, heat energy can be collected, stored with discharging, and then realization pair
The Reasonable Regulation And Control of heat energy supply-demand relationship.The citation form that phase-change material is changed by material phase in its course of work can be divided into it is solid-
Air-liquid-gas, solid-solid and the class of solid-liquid phase change material four.Wherein solid-liquid phase change material utilizes matter melts and the heat absorption in solidification
With exothermic phenomenon, the storage and release to heat energy are realized.During solid-liquid phase change, the phase transformation of substances enthalpy is larger and Volume Changes
Less, at the same its phase transition process relax and it is easily controllable.In view of the advantages of solid-liquid phase change material, it makes as research at present
The material classification of greatest concern in.Solid-liquid phase change material, which chemically forms, is broadly divided into organic and inorganic and its compound eutectic material
Material.Organic solid-liquid phase change material mainly includes paraffin, alcohols, fitter acids and its ester class, arene, fragrant ketone and acid amides
Class etc., inorganic then mainly include crystalline hydrate salt, fuse salt and metal (alloy) etc..
Solid-liquid phase change material can be divided into low temperature and medium and high temperature phase-change material, low-temperature phase-change material by its operating temperature range
Mainly include organic matter and crystalline hydrate salt, the medium and high temperature phase-change materials such as polyethylene glycol, paraffin and aliphatic acid and mainly include machine
High polymer material, fuse salt and metal alloy etc..In medium temperature regenerator material, fuse salt phase-change material latent heat of phase change is big, is mesh
It is preceding to be applied to the heat-storing material that heat storage capacity compare favourably with alloy in solar thermal utilization, but its thermal conductivity factor is low, low temperature
Shi Huiyou is separated, and has certain corrosivity, high to the requirement that coats container material, causes the integrated cost that uses higher,
Security is relatively low, greatly influences its application in practice.And organic polymer phase-change material have thermal energy storage amount it is big,
Temperature adjustable, Volume Changes are small, the features such as easily being combined with other materials, thus are widely used in the storage of solar energy
With utilization, intelligent automatic air-conditioning and construction thing, glasshouse, automatic temperature-control clothes and bed clothes, phase change energy-storage type air-conditioning, energy storage
The civilian and military such as cooker field.Its major defect is that thermal conductivity factor is low, and performance degradation when long-term use of is more serious, long-term
Heat endurance is poor etc. to be caused to be difficult to carry out large-scale commercial introduction and application at present.
Current many researchers carry out numerous studies to the improvement based on organic macromolecule hold over system and hot property,
The emphasis of research is concentrated mainly on augmentation of heat transfer, and the method for use mainly adds graphite, expanded graphite, carbon fiber and metal material
Material.
Although the scholar in presently relevant field has carried out a series of research to organic heat-storing material, actually want to make
Organic heat-storing material can large-scale use, its high-temperature heat-resistance performance is particularly the raising pole of the heat resistance after multiple thermal cycle
To be important, the method typically used is to introduce heat-resisting group in the molecular structure, and this method complex process, cost is high, difficult
With large-scale promotion application, thus do not solved effectively yet so far the problem of heat resistance.
The content of the invention
The technical problems to be solved by the invention are for above shortcomings in the prior art, there is provided a kind of medium temperature is used
Phase change heat storage material and preparation method thereof, this method is using adipic acid as heat-storing material, and rare earth oxide is heat-proof modifier, graphite
Alkene is enhanced thermal conduction material, prepared heat-storing material thermal conductivity and good thermal stability.
In order to solve the above technical problems, technical scheme provided by the invention is：
A kind of medium temperature phase change heat storage material is provided, the medium temperature phase change heat storage material by following weight content material group
It is grouped into：Adipic acid 80~90%, rare earth oxide 5~10%, graphene 5~10%, and binding agent, the binding agent
Quality is the 3% of adipic acid, rare earth oxide and graphene three's gross mass.
By such scheme, the rare earth oxide is the one or more in cerium oxide, praseodymium oxide, europium oxide, erbium oxide.
By such scheme, the binding agent is the aqueous solution of sodium carboxymethylcellulose (CMC).
The present invention uses graphene, is to utilize the excellent adsorption capacity of graphene and larger thermal conductivity factor, relative to swollen
Swollen graphite, graphene density is smaller, and the sorbing material graphene adsorption capacity of phase homogenous quantities is higher than expanded graphite several times to upper ten
Times, while the thermal conductivity factor of graphene is also more much bigger than expanded graphite, and it is shorter the time required to storing heat release in same time, simultaneously will
Graphene can improve the heat endurance of system as sorbing material.
By such scheme, the medium temperature is characterized in that phase transition temperature is 151~155 DEG C with phase change heat storage material, fusing
Heat absorption enthalpy is 200.3~225.4J/g, and solidification heat release enthalpy is 185.8~194.6J/g, and use temperature range is 120~250 DEG C,
Thermal conductivity is 2.18~2.58W/ (m.K), and it is 180.4~202.9J/g that 500 times, which store its fusing heat absorption enthalpy after heat release circulates, solidification
Heat release enthalpy is 173.3~185.4J/g, and mass loss rate is less than 3%.
The present invention also provides the preparation method of above-mentioned medium temperature phase change heat storage material, and its step is as follows：
(1) medium temperature will be prepared to be weighed according to quality proportioning with the raw material of phase change heat storage material, the weight of raw material each component
Measuring proportioning is：Adipic acid 80~90%, rare earth oxide 5~10%, graphene 5~10%, and binding agent, the binding agent
Quality be adipic acid, the 3% of rare earth oxide and graphene three's gross mass, wherein adipic acid grinding sieving for standby；
(2) hexanedioic acid, rare earth oxide and graphene are subjected to mechanical mixture by preset blending ratio, load earthenware after well mixed
In crucible, vacuum drying chamber is put into, melting absorption 6 hours at a temperature of 150~160 DEG C；
(3) mix binding agent and carry out compression molding, that is, obtain the medium temperature phase change heat storage material.
By such scheme, step (1) described rare earth oxide is one kind in cerium oxide, praseodymium oxide, europium oxide, erbium oxide
It is or a variety of.
By such scheme, the binding agent is the aqueous solution of sodium carboxymethylcellulose.
By such scheme, the pressure of step (2) described compression molding is 10~15MPa, and voltage stabling control is 30~60 seconds.
The principle of the present invention is：Phase-change material adipic acid latent heat of phase change is high, hot property is excellent, and graphene have it is excellent
Heat conductivility and absorption property, hexanedioic acid can be fully adsorbed inside graphene, heat-storing material occur solid-liquid phase change
The carrier of Shi Zuowei phase-change materials, it can effectively overcome the liquid phase substance leakage problem in phase transition process.In addition, rare earth material
The heat resistance and thermal stability of heat-storing material can be effectively improved by introducing, and improve service life.
The beneficial effects of the present invention are：1st, the present invention is led to using hexanedioic acid, rare earth oxide, graphene as primary raw material
Cross simple process and prepare medium temperature phase change heat storage material, it is with short production cycle；2nd, phase change heat storage material heat conduction prepared by the present invention
Performance and thermal stability are good.Pure hexanedioic acid phase transition temperature is 151~155 DEG C, and fusing heat absorption enthalpy is 258J/g, solidifies heat release
Enthalpy is 247J/g, and use temperature range is 120~250 DEG C, and thermal conductivity is 0.45W/ (m.K), and it is molten after 500 storage heat release circulations
It is 188J/g to change heat absorption enthalpy, and solidification heat release enthalpy is 179J/g, and mass loss rate is 5~8%.And phase transition temperature of the present invention is 151
~155 DEG C, fusing heat absorption enthalpy be 200.3~225.4J/g, and it is 185.8~194.6J/g to solidify heat release enthalpy, use temperature range
For 120~250 DEG C, thermal conductivity is 2.18~2.58W/ (m.K), store for 500 times its fusing heat absorption enthalpy after heat release circulation be 180.4~
202.9J/g, solidification heat release enthalpy are 173.3~185.4J/g, and mass loss rate is less than 3%.It can be seen that admixture graphene and rare earth
The thermal conductivity and ageing-resistant performance of heat-storing material can be improved.
Brief description of the drawings
Fig. 1 is the electron scanning micrograph of the medium temperature phase change heat storage material prepared by embodiment 2.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is made below in conjunction with the accompanying drawings into
One step is described in detail.
Embodiment 1
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 80%, rare earth oxide (cerium oxide)
10%, graphene 10%, and binding agent, the quality of the binding agent is that adipic acid, rare earth oxide and graphene three are total
The 3% of quality, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed uniform with rare earth material (cerium oxide) and graphene mechanical mixture after 100 mesh sieves, mixing is equal
It is fitted into after even in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated into binding agent at a temperature of 150~160 DEG C
CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase change heat storage material.
After tested, the phase transition temperature of the medium temperature phase change heat storage material prepared by the present embodiment is 152.5 DEG C, fusing heat absorption enthalpy
For 200.3J/g, solidification heat release enthalpy is 190.5J/g, and the medium temperature is measured using Hot Disc company 2500S type thermal constant analyzers
The thermal conductivity of phase change heat storage material is 2.58W/ (m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C,
5min is incubated, then naturally cools to room temperature, after such 500 times store heat release circulation, it is 180.4J/ that it, which melts heat absorption enthalpy,
G, solidification heat release enthalpy are 173.3J/g, and mass loss rate is less than 3%.
Embodiment 2
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 82%, rare earth oxide (praseodymium oxide)
10%, graphene 8%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide and the total matter of graphene three
The 3% of amount, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed uniform with rare earth material (praseodymium oxide) and graphene mechanical mixture after 100 mesh sieves, mixing is equal
It is fitted into after even in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated into binding agent at a temperature of 150~160 DEG C
CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase change heat storage material.Its
Electron scanning micrograph as shown in figure 1, from photo it is observed that adipic acid mixed with graphene uniform,
The lower adipic acid absorption of absorption affinity effect is on the surface of graphene, and obvious piece is presented in both mutual tight adhesions, graphene
Shape structure, and form network-like, graphene particles particle diameter arrives dozens of micron several, and the thickness of laminated structure is in 1 micron
Left and right.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 204.7J/g, and solidification heat release enthalpy is 185.8J/g, thermal conductivity 2.42W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 184.4J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 173.4J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 3
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 84%, rare earth oxide (europium oxide)
9%, graphene 7%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide and the total matter of graphene three
The 3% of amount, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed uniform with rare earth material (europium oxide) and graphene mechanical mixture after 100 mesh sieves, mixing is equal
It is fitted into after even in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated into binding agent at a temperature of 150~160 DEG C
CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase change heat storage material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 210.4J/g, and solidification heat release enthalpy is 188.6J/g, thermal conductivity 2.36W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 189.5J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 176.6J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 4
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 86%, rare earth oxide (erbium oxide)
8%, graphene 6%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide and the total matter of graphene three
The 3% of amount, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed uniform with rare earth material (erbium oxide) and graphene mechanical mixture after 100 mesh sieves, mixing is equal
It is fitted into after even in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated into binding agent at a temperature of 150~160 DEG C
CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase change heat storage material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 215.4J/g, and solidification heat release enthalpy is 190.5J/g, thermal conductivity 2.25W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 193.8J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 179.7J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 5
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 88%, rare earth oxide cerium oxide are
2.5%, praseodymium oxide 2.5%, graphene 7%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide
With the 3% of graphene three's gross mass, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed it is uniform with rare earth material (cerium oxide, praseodymium oxide) and graphene mechanical mixture after 100 mesh sieves,
It is fitted into after well mixed in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated at a temperature of 150~160 DEG C
Binding agent CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase-transition heat-storage material
Material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 220.4J/g, and solidification heat release enthalpy is 193.6J/g, thermal conductivity 2.35W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 198.4J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 183.5J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 6
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 90%, rare earth oxide cerium oxide are
2.5%, praseodymium oxide 2.5%, graphene 5%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide
With the 3% of graphene three's gross mass, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed it is uniform with rare earth material (cerium oxide, praseodymium oxide) and graphene mechanical mixture after 100 mesh sieves,
It is fitted into after well mixed in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated at a temperature of 150~160 DEG C
Binding agent CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase-transition heat-storage material
Material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 225.4J/g, and solidification heat release enthalpy is 194.6J/g, thermal conductivity 2.18W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 202.9J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 185.4J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 7
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 85%, rare earth oxide europium oxide are
2.5%, erbium oxide 2.5%, graphene 10%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide
With the 3% of graphene three's gross mass, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed it is uniform with rare earth material (europium oxide, erbium oxide) and graphene mechanical mixture after 100 mesh sieves,
It is fitted into after well mixed in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated at a temperature of 150~160 DEG C
Binding agent CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 30 seconds, the demoulding is to obtain the medium temperature phase-transition heat-storage material
Material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 212.9J/g, and solidification heat release enthalpy is 189.4J/g, thermal conductivity 2.57W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 191.6J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 177.5J/g, and quality is damaged
Mistake rate is less than 3%.
Embodiment 8
Medium temperature is with phase change heat storage material starting components and mass ratio：Adipic acid 85%, rare earth oxide europium oxide are
5%, erbium oxide 5%, graphene 5%, and binding agent, the quality of the binding agent is adipic acid, rare earth oxide and stone
The 3% of black alkene three gross mass, wherein the sodium carboxymethyl cellulose solution that it is 3wt% that binding agent used, which is concentration,.
Adipic acid grinding is crossed it is uniform with rare earth material (europium oxide, erbium oxide) and graphene mechanical mixture after 100 mesh sieves,
It is fitted into after well mixed in crucible, is put into vacuum drying chamber, melting absorption 6 hours, is subsequently incorporated at a temperature of 150~160 DEG C
Binding agent CMC carries out compression molding, and pressure is 10~15MPa, and voltage stabilizing 60 seconds, the demoulding is to obtain the medium temperature phase-transition heat-storage material
Material.
Medium temperature prepared by the present embodiment is tested with phase change heat storage material, test result is as follows：Phase transition temperature with
The test result of embodiment 1 approaches, and fusing heat absorption enthalpy is 213.9J/g, and solidification heat release enthalpy is 191.3J/g, thermal conductivity 2.19W/
(m.K).With 10~15 DEG C/min heating rate from room temperature to 200 DEG C, 5min is incubated, then naturally cools to room temperature,
Its fusing heat absorption enthalpy is 191.5J/g after such 500 times storage heat release circulations, and solidification heat release enthalpy is 180.5J/g, and quality is damaged
Mistake rate is less than 3%.
Claims (7)
1. a kind of medium temperature phase change heat storage material, it is characterised in that the medium temperature phase change heat storage material is by following weight content
Material component forms：Adipic acid 80~90%, rare earth oxide 5~10%, graphene 5~10%, and binding agent, it is described viscous
The quality for tying agent is the 3% of adipic acid, rare earth oxide and graphene three's gross mass；
The rare earth oxide is the one or more in cerium oxide, praseodymium oxide, europium oxide, erbium oxide.
2. medium temperature phase change heat storage material according to claim 1, it is characterised in that the binding agent is carboxymethyl cellulose
The aqueous solution of plain sodium.
3. medium temperature phase change heat storage material according to claim 1 or 2, it is characterised in that medium temperature phase-transition heat-storage material
It is 151~155 DEG C to expect phase transition temperature, and fusing heat absorption enthalpy is 200.3~225.4J/g, and solidification heat release enthalpy is 185.8~194.6J/
G, use temperature range are 120~250 DEG C, and thermal conductivity is 2.18~2.58W/ (mK), and it melts after 500 storage heat release circulations
Heat absorption enthalpy is 180.4~202.9J/g, and solidification heat release enthalpy is 173.3~185.4J/g, and mass loss rate is less than 3%.
4. the preparation method of any described medium temperature phase change heat storage materials of a kind of claim 1-3, it is characterised in that step is such as
Under：
(1) medium temperature will be prepared to be weighed according to quality proportioning with the raw material of phase change heat storage material, the weight of raw material each component is matched somebody with somebody
Than for：Adipic acid 80~90%, rare earth oxide 5~10%, graphene 5~10%, and binding agent, the matter of the binding agent
Measure as the 3% of adipic acid, rare earth oxide and graphene three's gross mass, wherein adipic acid grinding sieving for standby；
(2) hexanedioic acid, rare earth oxide and graphene are subjected to mechanical mixture by preset blending ratio, load crucible after well mixed
In, vacuum drying chamber is put into, melting absorption 6 hours at a temperature of 150~160 DEG C；
(3) mix binding agent and carry out compression molding, that is, obtain the medium temperature phase change heat storage material.
5. the preparation method of medium temperature phase change heat storage material according to claim 4, it is characterised in that step (1) is described dilute
Native oxide is the one or more in cerium oxide, praseodymium oxide, europium oxide, erbium oxide.
6. the preparation method of medium temperature phase change heat storage material according to claim 4, it is characterised in that step (3) is described viscous
Tie the aqueous solution that agent is sodium carboxymethylcellulose.
7. the preparation method of medium temperature phase change heat storage material according to claim 4, it is characterised in that step (3) described pressure
The pressure of sheetmolding is 10~15MPa, and voltage stabling control is 30~60 seconds.
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| CN105086948B (en) * | 2015-08-18 | 2018-09-25 | 栗世芳 | A kind of phase-change heat-storage material and the preparation method and application thereof and phase change material device |
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| CN111826128B (en) * | 2020-07-13 | 2021-10-22 | 黄冈师范学院 | Modified diatomite/adipic acid phase change heat storage material and preparation method thereof |
| CN113667458B (en) * | 2021-08-20 | 2023-10-13 | 杭州鲁尔新材料科技有限公司 | High-temperature-resistant organic phase change material |
| CN115678512B (en) * | 2022-10-12 | 2024-04-05 | 西北农林科技大学 | CMC phase-change hydrogel suitable for warming warm-loving crops and preparation method thereof |
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