CN108017403A - A kind of compound heat accumulation ceramic based material of high-temperature phase-change and preparation method thereof - Google Patents

A kind of compound heat accumulation ceramic based material of high-temperature phase-change and preparation method thereof Download PDF

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CN108017403A
CN108017403A CN201711322736.0A CN201711322736A CN108017403A CN 108017403 A CN108017403 A CN 108017403A CN 201711322736 A CN201711322736 A CN 201711322736A CN 108017403 A CN108017403 A CN 108017403A
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唐华
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Tianjin Qizhen Energy Saving Technology Co Ltd
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Abstract

The invention belongs to heat accumulating technical field, specifically discloses compound heat accumulation ceramic based material of a kind of high-temperature phase-change and preparation method thereof.In parts by weight, which is prepared by following raw material:10~15 parts of ceramic substrate, 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate, 1~2 part of highly-conductive hot carbon fiber, 1~2 part of doped graphite.The compound heat accumulation ceramic based material of high-temperature phase-change prepared by the present invention, has the advantages that latent heat of phase change is big, high-temperature stability is strong, small toxicity, corrosivity are small, can be used as phase-change heat-storage material, improve energy conversion efficiency;Heat conductivility higher, heat absorption exotherm rate is faster;Its shape will not be changed in phase transformation, can effectively prevent from revealing.

Description

A kind of compound heat accumulation ceramic based material of high-temperature phase-change and preparation method thereof
Technical field
The invention belongs to heat accumulating technical field, and in particular to a kind of compound heat accumulation ceramic based material of high-temperature phase-change and its Preparation method.
Background technology
It is energy saving with it is environmentally friendly be field of energy utilization an important topic, utilize phase-change heat-storage material latent heat of phase change storage Energy is a kind of new power-saving technology.Heat accumulating absorbs the heat of surrounding environment in phase transition process, and in surrounding environment When temperature reduces, heat is discharged to surrounding environment, so as to achieve the purpose that to control ambient temperature and energy saving.It is in solar energy All have wide practical use using fields such as, thermal energy recycling, air conditioner refrigerating, building energy conservation, aerospaces.
The shortcomings that current heat accumulating generally existing heat conductivility is poor, therefore manufactured phase-change thermal storage component is due to heat conduction Property is poor, can not give full play to the heat storage function of heat accumulating.Secondly, when solid-liquid phase-changeable occurs for heat accumulating, can cause to leak Problem.
The content of the invention
First technical problem to be solved by this invention is to provide a kind of compound heat accumulation ceramic based material of high-temperature phase-change, with Parts by weight meter, the material are prepared by following raw material:10~15 parts of ceramic substrate, 20~30 parts of lithium carbonate, potassium carbonate 20~ 30 parts, 30~40 parts of sodium carbonate, 1~2 part of highly-conductive hot carbon fiber, 1~2 part of doped graphite.
Preferably, the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, in parts by weight, which is prepared by following raw material Obtain:15 parts of ceramic substrate, 25 parts of lithium carbonate, 25 parts of potassium carbonate, 40 parts of sodium carbonate, 1 part of highly-conductive hot carbon fiber, doped graphite 2 Part.
Wherein, in the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, the ceramic substrate is SiC, SiO2Or MgO.
Wherein, in the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, the doped graphite is N doping graphite or boron Doped graphite.
Second technical problem to be solved by this invention is to provide the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change Preparation method, this method specifically include following steps:
(1) it is 10~15 parts of 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate and ceramic substrate is mixed Close, be ground uniformly mixed, obtain inorganic salts ceramic matrix systems;
(2) 1~2 part of highly-conductive hot carbon fiber, 1~2 part of doped graphite are heated in 500~600 DEG C of inert gases 15min, is then added in above-mentioned inorganic salts ceramic matrix systems, uniform by ground and mixed, forms compound system;
(3) after the pressurized shaping of above-mentioned compound system, 20~30min is sintered in 700~760 DEG C, is cooled down after the completion of sintering To room temperature, the compound heat accumulation ceramic based material of high-temperature phase-change is obtained.
Wherein, grinding in the preparation method of the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, step (1) and step (2) To particle diameter between 400~500 mesh.
Wherein, the preparation method of the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, the condition pressurizeed described in step (3) For:2.4~2.8MPa of pressure, 2~2.5min of pressing time.
Wherein, the preparation method of the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, liter when being sintered described in step (3) Warm speed is 3~5 DEG C/min, and the rate of temperature fall during cooling is 10 DEG C/min.
Compared with prior art, the beneficial effects of the invention are as follows:The compound heat accumulation ceramic base of high-temperature phase-change prepared by the present invention Material, has the advantages that latent heat of phase change is big, high-temperature stability is strong, small toxicity, corrosivity are small, can make as phase-change heat-storage material With improving energy conversion efficiency;Heat conductivility higher, heat absorption exotherm rate is faster;Its shape will not be changed in phase transformation, can Effectively to prevent from revealing.
Embodiment
The present invention provides a kind of compound heat accumulation ceramic based material of high-temperature phase-change, in parts by weight, the material is by following original Material is prepared:10~15 parts of ceramic substrate, 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate, height are led Hot 1~2 part of carbon fiber, 1~2 part of doped graphite;
The ceramic substrate is SiC, SiO2Or MgO, the doped graphite adulterate stone for N doping graphite or boron Ink.
Preferably, the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, in parts by weight, which is prepared by following raw material Obtain:15 parts of ceramic substrate, 25 parts of lithium carbonate, 25 parts of potassium carbonate, 40 parts of sodium carbonate, 1 part of highly-conductive hot carbon fiber, doped graphite 2 Part.
Further, present invention also offers the preparation method of the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, the party Method specifically includes following steps:
(1) it is 10~15 parts of 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate and ceramic substrate is mixed Close, be ground to 400~500 mesh and be uniformly mixed, obtain inorganic salts ceramic matrix systems;
(2) 1~2 part of highly-conductive hot carbon fiber, 1~2 part of doped graphite are heated in 500~600 DEG C of inert gases 15min, is then added in above-mentioned inorganic salts ceramic matrix systems, is uniformly mixed by being ground to 400~500 mesh, is formed multiple Zoarium system;
(3) after the pressurized shaping of above-mentioned compound system, 2.4~2.8MPa of moulding pressure, 2~2.5min of pressing time, in 700~760 DEG C sinter 20~30min, are cooled to room temperature after the completion of sintering, obtain the compound heat accumulation ceramic based material of high-temperature phase-change.
Wherein, the preparation method of the compound heat accumulation ceramic based material of above-mentioned high-temperature phase-change, liter when being sintered described in step (3) Warm speed is 3~5 DEG C/min, and the rate of temperature fall during cooling is 10 DEG C/min.
The present invention is made further explanation and description below in conjunction with specific embodiment, but is not intended to limit the present invention Protection domain.
Embodiment 1
The preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change, this method specifically include following steps:
(1) by 25 parts of lithium carbonate, 25 parts of potassium carbonate, 40 parts of sodium carbonate and the mixing of 15 parts of SiC ceramic matrix, be ground to 400 mesh are uniformly mixed, and obtain inorganic salts ceramic matrix systems;
(2) 1 part of highly-conductive hot carbon fiber, 2 parts of N doping graphite are heated into 15min in 520 DEG C of inert gases, then added Into inorganic salts ceramic matrix systems, it is uniformly mixed by being ground to 400 mesh, forms compound system;
(3) after the pressurized shaping of compound system, moulding pressure 2.8MPa, pressing time 2min, 20min is sintered in 760 DEG C, Heating rate during sintering is 5 DEG C/min, is cooled to room temperature after the completion of sintering, and rate of temperature fall during cooling is 10 DEG C/min, is obtained To the compound heat accumulation ceramic based material of high-temperature phase-change.
Embodiment 2
The preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change, this method specifically include following steps:
(1) by 20 parts of lithium carbonate, 30 parts of potassium carbonate, 30 parts of sodium carbonate and the mixing of 10 parts of MgO ceramic substrates, be ground to 500 mesh are uniformly mixed, and obtain inorganic salts ceramic matrix systems;
(2) 2 parts of highly-conductive hot carbon fiber, 1 part of N doping graphite are heated into 15min in 600 DEG C of inert gases, then added Into inorganic salts ceramic matrix systems, it is uniformly mixed by being ground to 500 mesh, forms compound system;
(3) after the pressurized shaping of compound system, moulding pressure 2.4MPa, pressing time 2.5min, in 700 DEG C of sintering 30min, heating rate during sintering is 3 DEG C/min, is cooled to room temperature after the completion of sintering, rate of temperature fall during cooling for 10 DEG C/ Min, obtains the compound heat accumulation ceramic based material of high-temperature phase-change.
Embodiment 3
The preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change, this method specifically include following steps:
(1) by 30 parts of lithium carbonate, 20 parts of potassium carbonate, 35 parts of sodium carbonate and SiO212 parts of mixing of ceramic substrate, are ground It is uniformly mixed to 450 mesh, obtains inorganic salts ceramic matrix systems;
(2) 1.5 parts of highly-conductive hot carbon fiber, 1.5 parts of boron doped graphite are heated into 15min in 560 DEG C of inert gases, then It is added in inorganic salts ceramic matrix systems, is uniformly mixed by being ground to 460 mesh, forms compound system;
(3) after the pressurized shaping of compound system, moulding pressure 2.6MPa, pressing time 2min, 25min is sintered in 740 DEG C, Heating rate during sintering is 3 DEG C/min, is cooled to room temperature after the completion of sintering, and rate of temperature fall during cooling is 10 DEG C/min, is obtained To the compound heat accumulation ceramic based material of high-temperature phase-change.

Claims (8)

1. a kind of compound heat accumulation ceramic based material of high-temperature phase-change, it is characterised in that in parts by weight, the material is by following raw material system It is standby to obtain:10~15 parts of ceramic substrate, 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate, highly-conductive hot carbon 1~2 part of fiber, 1~2 part of doped graphite.
2. the compound heat accumulation ceramic based material of a kind of high-temperature phase-change according to claim 1, it is characterised in that with parts by weight Meter, the material are prepared by following raw material:15 parts of ceramic substrate, 25 parts of lithium carbonate, 25 parts of potassium carbonate, 40 parts of sodium carbonate, height 1 part of heat conduction carbon fiber, 2 parts of doped graphite.
A kind of 3. compound heat accumulation ceramic based material of high-temperature phase-change according to claim 1 or 2, it is characterised in that the pottery Porcelain matrix is SiC, SiO2Or MgO.
4. the compound heat accumulation ceramic based material of a kind of high-temperature phase-change according to claim 1 or 2, it is characterised in that described to mix Miscellaneous graphite is N doping graphite or boron doped graphite.
5. the preparation method of the compound heat accumulation ceramic based material of any one of Claims 1 to 4 high-temperature phase-change, it is characterised in that This method specifically includes following steps:
(1) 10~15 parts of 20~30 parts of lithium carbonate, 20~30 parts of potassium carbonate, 30~40 parts of sodium carbonate and ceramic substrate are mixed, It is ground uniformly mixed, obtains inorganic salts ceramic matrix systems;
(2) 1~2 part of highly-conductive hot carbon fiber, 1~2 part of doped graphite are heated into 15min in 500~600 DEG C of inert gases, so After be added in above-mentioned inorganic salts ceramic matrix systems, it is uniform by ground and mixed, formed compound system;
(3) after the pressurized shaping of above-mentioned compound system, 20~30min is sintered in 700~760 DEG C, is cooled to after the completion of sintering often Temperature, obtains the compound heat accumulation ceramic based material of high-temperature phase-change.
6. the preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change according to claim 5, it is characterised in that step (1) and in step (2) particle diameter is ground between 400~500 mesh.
7. the preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change according to claim 5, it is characterised in that step (3) condition pressurizeed described in is:2.4~2.8MPa of pressure, 2~2.5min of pressing time.
8. the preparation method of the compound heat accumulation ceramic based material of high-temperature phase-change according to claim 5, it is characterised in that step (3) heating rate when being sintered described in is 3~5 DEG C/min, and the rate of temperature fall during cooling is 10 DEG C/min.
CN201711322736.0A 2017-12-12 2017-12-12 A kind of compound heat accumulation ceramic based material of high-temperature phase-change and preparation method thereof Pending CN108017403A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624294A (en) * 2018-06-08 2018-10-09 华北电力大学 A kind of high temperature phase-change heat-storage material and preparation method based on gangue
CN108675822A (en) * 2018-07-09 2018-10-19 合肥连森裕腾新材料科技开发有限公司 A kind of heat accumulation ceramic based material and preparation method thereof
CN108865079A (en) * 2018-08-22 2018-11-23 北京科技大学 A method of high-temperature molten salt particle phase-change material is encapsulated using unorganic glass powder
CN109135684A (en) * 2018-09-21 2019-01-04 贵州梅岭电源有限公司 A kind of thermal cell composite phase-change material and preparation method thereof
CN109320212A (en) * 2018-10-22 2019-02-12 全球能源互联网研究院有限公司 A kind of phase-change heat-storage material, phase-change thermal storage brick and preparation method thereof
CN113429940A (en) * 2021-07-12 2021-09-24 华中科技大学 Nano silicon carbide reinforced heat storage composite phase change heat storage material and preparation method thereof
US11740031B1 (en) 2022-03-04 2023-08-29 Battelle Savannah River Alliance, Llc High temperature thermochemical energy storage materials

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CN101239798A (en) * 2008-01-04 2008-08-13 华南理工大学 Organic matter/expandable graphite composite phase change heat-storing building material and preparation method thereof
CN102585775A (en) * 2012-01-20 2012-07-18 中国科学院过程工程研究所 High-temperature composite phase change heat storage material and preparation method thereof
US20130000488A1 (en) * 2011-06-30 2013-01-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Composite hollow ceramic fibers, precursors for, methods of making the same, and methods of using the same
CN104591767A (en) * 2015-01-15 2015-05-06 中国建筑材料科学研究总院 High-temperature phase-change thermal insulation material and preparation method thereof
CN107337436A (en) * 2017-05-18 2017-11-10 全球能源互联网研究院 A kind of phase-change heat-storage material and preparation method thereof

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CN101239798A (en) * 2008-01-04 2008-08-13 华南理工大学 Organic matter/expandable graphite composite phase change heat-storing building material and preparation method thereof
US20130000488A1 (en) * 2011-06-30 2013-01-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Composite hollow ceramic fibers, precursors for, methods of making the same, and methods of using the same
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CN104591767A (en) * 2015-01-15 2015-05-06 中国建筑材料科学研究总院 High-temperature phase-change thermal insulation material and preparation method thereof
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624294A (en) * 2018-06-08 2018-10-09 华北电力大学 A kind of high temperature phase-change heat-storage material and preparation method based on gangue
CN108675822A (en) * 2018-07-09 2018-10-19 合肥连森裕腾新材料科技开发有限公司 A kind of heat accumulation ceramic based material and preparation method thereof
CN108865079A (en) * 2018-08-22 2018-11-23 北京科技大学 A method of high-temperature molten salt particle phase-change material is encapsulated using unorganic glass powder
CN108865079B (en) * 2018-08-22 2020-12-22 北京科技大学 Method for packaging high-temperature molten salt particle phase change material by using inorganic glass powder
CN109135684A (en) * 2018-09-21 2019-01-04 贵州梅岭电源有限公司 A kind of thermal cell composite phase-change material and preparation method thereof
CN109320212A (en) * 2018-10-22 2019-02-12 全球能源互联网研究院有限公司 A kind of phase-change heat-storage material, phase-change thermal storage brick and preparation method thereof
CN109320212B (en) * 2018-10-22 2021-07-13 全球能源互联网研究院有限公司 Phase-change heat storage material, phase-change heat storage brick and preparation method thereof
CN113429940A (en) * 2021-07-12 2021-09-24 华中科技大学 Nano silicon carbide reinforced heat storage composite phase change heat storage material and preparation method thereof
CN113429940B (en) * 2021-07-12 2022-05-20 华中科技大学 Nano silicon carbide reinforced heat storage composite phase-change heat storage material and preparation method thereof
US11740031B1 (en) 2022-03-04 2023-08-29 Battelle Savannah River Alliance, Llc High temperature thermochemical energy storage materials

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Application publication date: 20180511