CN102732231A - Metal-matrix composite chemical heat-storage material and method for preparing same - Google Patents
Metal-matrix composite chemical heat-storage material and method for preparing same Download PDFInfo
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- CN102732231A CN102732231A CN2012102420319A CN201210242031A CN102732231A CN 102732231 A CN102732231 A CN 102732231A CN 2012102420319 A CN2012102420319 A CN 2012102420319A CN 201210242031 A CN201210242031 A CN 201210242031A CN 102732231 A CN102732231 A CN 102732231A
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Abstract
The invention provides a metal-matrix composite chemical heat-storage material and a method for preparing the same. The method comprises the following specific steps: adding distilled water into a chemical heat-storage material, stirring to form a suspension, soaking a metal-matrix porous body into the suspension of the heat-storage material under the pressurizing condition, and pressurizing repeatedly to obtain the metal-matrix composite chemical heat-storage material. The metal-matrix composite chemical heat-storage material can be used in the high-temperature condition, solves the problem that the chemical heat-storage material can expand or contract to deform due to chemical reaction and has good stability. In addition, the metal-matrix porous body has good heat-conducting performance and can improve the coefficient of heat conductivity of the composite chemical heat-storage material.
Description
Technical field
The present invention relates to inorganic materials and field of energy-saving technology.Relate in particular to a kind of metal-based composite chemical heat-storing material and preparation method.
Technical background
Heat storage technology is the important technology that improves efficiency of energy utilization and protection environment; Can be used for solving the unbalance contradiction of heat energy supply and demand, be with a wide range of applications in the field such as energy-conservation of " peak load shifting ", sun power utilization, used heat and the waste heat recovery of electric power and industry and covil construction heating and air-conditioning.Thermal energy storage has become worldwide research focus at present.And heat-storing material is the core of heat storage technology.Heat-storing material is exactly a kind of new chemical material that can heat energy storage.
The thermochemical method accumulation of heat utilize in the chemical change process inhale, thermal discharge carries out store heat.The chemical reaction accumulation of heat is an important method in the thermochemical method heat storage type.Characteristics such as the chemical reaction accumulation of heat utilizes the linkage heat storage power of reversible chemical reaction, compares with sensible heat, latent-heat storage mode, and it is fast to have speed of response, and reagent is stable, and reaction heat is big.
Behind the motor car engine cold post-start, need let engine idle idle running for some time, be called engine warm-up or " preheating ",, thereby improve motor efficiency, also help the emission behavior of vehicle simultaneously with the lifting engine temperature.At present, normally adopt power of self and power supply to carry out warming-up, but can increase fuel consumption, also influence automotive performance simultaneously.Especially the full-sized car warming-up often causes the electric quantity consumption of storage in the full-sized car storage battery excessive and influence the safety of actuating motor work.Patent CN101514666B provides a kind of device and method of full-sized car engine warm-up; Second mover that this invention adopts full-sized car to install additional; Utilize the function that its power is less, be convenient to cold starting, also solved the storage battery power shortage problem that the storage battery electric energy of finite capacity comes warming-up to occur.Though adopt second mover, fuel consumption is little, also can increase fuel consumption, increased the vehicle structure complicacy simultaneously.
For solving the engine warm-up problem, but carrying out heat to motor exhaust (about 400 ℃) waste heat, the applied chemistry heat-storing material stores, when treating engine cold starting, in water coolant,, accomplish warming-up process to the heat release that has stored to improve engine temperature.This method is utilized chemical heat-accumulating material to store using waste heat from tail gas to carry out warming-up, can effectively reduce fuel consumption, and does not influence other the performance of part of automobile.
But general chemical heat-accumulating material causes the low and life-span minimizing of thermo-efficiency through reacting the reduction of afterreaction property repeatedly; And accumulation of heat material meeting volume expanding or contraction cause unformedization of accumulation of heat material volume during owing to reaction, have a strong impact on the safety that chemical heat-accumulating material uses.During high engine load operation, the vehicle exhaust temperature can be up to 900 ℃, and chemical heat-accumulating material use temperature scope also is a significant consideration.In addition, the heat conductivility of chemical heat-accumulating material is also not too high.
Summary of the invention
To problem that exists in the prior art and defective, the invention provides a kind of metal-based composite chemical heat-storing material and preparation method thereof.
For achieving the above object, the technical scheme below the present invention has taked:
Described metal-based composite chemical heat-storing material is characterized in that, is matrix with the metal porous body, load chemical heat-accumulating material particle, and chemical heat-accumulating material is particles filled in metal porous body, and the hole wall of metal porous body is isolated the chemical heat-accumulating material feed particles.
Said chemical heat-accumulating material is preferably selected from Ca (OH)
2, Mg (OH)
2Deng compound.
Said metal matrix material is the refractory metal porous insert that does not react with calcium, magnesium compound, and like nickel foam, foam copper etc., foam aperture is preferably 450 μ m to 900 μ m.
The weight percent of said chemical heat-accumulating material in metal-based composite chemical heat-storing material is 40%-80%.
The preparation method of above-mentioned metal-based composite chemical heat-storing material comprises the steps:
(1) zero(ppm) water is added in the chemical heat-accumulating material, stir, process chemical heat-accumulating material suspension-s, the mass ratio of chemical heat-accumulating material and zero(ppm) water is 1: (1-5);
(2) body material of metal porous body is contained be immersed in the chemical heat-accumulating material suspension-s; 0.2-1.0MPa under the pressure; The impregnation of repeatedly pressurizeing in 5-30 minute is taken out body material then and is placed on 120 ℃ dry 24 hours of thermostat container, promptly processes metal-based composite chemical heat-storing material.
Said chemical heat-accumulating material is preferably Ca (OH)
2, Mg (OH)
2Deng compound.
Said metal matrix material is the refractory metal porous insert that does not react with calcium, magnesium compound, is preferably nickel foam or foam copper etc., and foam aperture is preferably 450 μ m to 900 μ m.
The material consumption is that chemical heat-accumulating material is 40%-80% at the weight percent of final product metal-based composite chemical heat-storing material in the said step (2).
The present invention compared with prior art has following advantage:
1. with the metal porous body matrix, the composite chemical heat-storing material of load accumulation of heat material particle, the volume change of accumulation of heat material only takes place in the micropore of metallic matrix when guaranteeing chemical reaction, guarantees composite chemical heat-storing material shape invariance.
2. metal-based composite chemical heat-storing material reactivity is constant, improves composite chemical heat-storing material heat storage efficiency, increases the service life.
3. the sensible heat accumulation of heat material in the composite chemical heat-storing material is a metallic matrix, and good heat conductivity can effectively improve the thermal conductivity of composite chemical heat-storing material.
4. metal matrix material is nickel foam, foam copper etc., and fusing point is higher, but under the application of high temperatures environment, use range is wide.
Description of drawings
Fig. 1 is 450 μ m nickel foam ESEMs for the embodiment of the invention 1 aperture
Fig. 2 changes synoptic diagram for the embodiment of the invention 1 Ni substrate composite chemical heat-storing material reactivity with reaction times
Embodiment
For better understanding the present invention, below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description, but the scope that the present invention requires to protect is not limited to the scope of case representation.
Embodiment one
Chemical heat-accumulating material adopts Ca (OH)
2, metallic matrix adopts foam Ni, and concrete preparation method is following: earlier with 300gCa (OH)
2The interior 400g zero(ppm) water that adds is stirred well to evenly, processes suspension-s; (aperture is respectively 450 μ m to the foam Ni in three kinds of different apertures of employing; 700 μ m; 900 μ m) 300g immerses above-mentioned suspension-s respectively, and the pressurization impregnation is 10 minutes under the 0.9MPa condition, the impregnation 5 times of pressurizeing repeatedly; Take out body material then and be placed on 120 ℃ dry 24 hours of thermostat container, promptly processing with nickel is the composite chemical heat-storing material of matrix.Through recording, emptying aperture aperture 450 μ m, 700 μ m, the composite chemical heat-storing material load factor of 900 μ m is respectively 52%, 49.5%, 49%.Fig. 2 changes synoptic diagram for Ni substrate composite chemical heat-storing material reactivity with reaction times, on scheming, can find out, this composite chemical heat-storing material through 6 secondary responses after, reactivity is still stable.
Embodiment two
Chemical heat-accumulating material adopts Ca (OH)
2, metallic matrix adopts foam Cu, and concrete preparation method is following: earlier with 300gCa (OH)
2The interior 700g zero(ppm) water that adds is stirred well to evenly, processes suspension-s; The employing aperture is that the foam Cu300g of 600 μ m immerses above-mentioned suspension-s; 0.7MPa the pressurization impregnation is 15 minutes under the condition; The impregnation 7 times of pressurizeing is repeatedly taken out body material then and is placed on 120 ℃ dry 24 hours of thermostat container, and promptly processing with copper is the composite chemical heat-storing material of matrix.
Embodiment three
Chemical heat-accumulating material adopts Mg (OH)
2, metallic matrix adopts foam Cu, and concrete preparation method is following: earlier with 300g Mg (OH)
2The interior 1200g zero(ppm) water that adds is stirred well to evenly, processes suspension-s; Adopting the aperture is that 500 μ m foam Cu 200g immerse above-mentioned suspension-s; 0.5MPa the pressurization impregnation is 20 minutes under the condition; The impregnation 8 times of pressurizeing is repeatedly taken out body material then and is placed on 120 ℃ dry 24 hours of thermostat container, and promptly processing with copper is the composite chemical heat-storing material of matrix.
Claims (10)
1. a metal-based composite chemical heat-storing material is characterized in that, is matrix with the metal porous body, load chemical heat-accumulating material particle, and chemical heat-accumulating material is particles filled in metal porous body, and the hole wall of metal porous body is isolated the chemical heat-accumulating material particle.
2. metal-based composite chemical heat-storing material as claimed in claim 1 is characterized in that, the body material of said metal porous body is the refractory metal porous insert that does not react with calcium, magnesium compound.
3. according to claim 1 or claim 2 metal-based composite chemical heat-storing material is characterized in that the body material of said metal porous body is nickel foam or foam copper.
4. metal-based composite chemical heat-storing material as claimed in claim 1 is characterized in that said chemical heat-accumulating material is selected from Ca (OH)
2, Mg (OH)
2
5. like claim 1 or 4 described metal-based composite chemical heat-storing materials, it is characterized in that the weight percent of said chemical heat-accumulating material in metal-based composite chemical heat-storing material is 40%-80%.
6. the preparation method of a metal-based composite chemical heat-storing material is characterized in that, comprises the steps:
(1) zero(ppm) water is added in the chemical heat-accumulating material, stir, process chemical heat-accumulating material suspension-s, the mass ratio of chemical heat-accumulating material and zero(ppm) water is 1:1-5;
(2) body material of metal porous body is contained be immersed in the chemical heat-accumulating material suspension-s; 0.2-1.0MPa under the pressure; 5-30 minute repeated multiple times pressurization impregnation is taken out body material then and is placed on 120 ℃ dry 24 hours of thermostat container, promptly processes metal-based composite chemical heat-storing material.
7. like the preparation method of claims 6 described metal-based composite chemical heat-storing materials, it is characterized in that said chemical heat-accumulating material is selected from Ca (OH)
2, Mg (OH)
2
8. like the preparation method of claims 6 described metal-based composite chemical heat-storing materials, it is characterized in that the body material of said metal porous body is the refractory metal porous insert that does not react with calcium, magnesium compound.
9. according to claims 6 or 7 described metal-based composite chemical heat-storing material preparing methods, it is characterized in that the body material of said metal porous body is nickel foam or foam copper.
10. according to claims 6 described metal-based composite chemical heat-storing material preparing methods, it is characterized in that the material consumption is that the weight percent of chemical heat-accumulating material in metal-based composite chemical heat-storing material is 40%-80% in the step (2).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289654A (en) * | 2013-07-03 | 2013-09-11 | 西北大学 | Expanded graphite composite heat storage material, as well as preparation method and application thereof |
| CN104096269A (en) * | 2013-04-12 | 2014-10-15 | 重庆润泽医药有限公司 | Making method of aperture connected support |
| CN104650820A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Formula of chemical heat storage material for heat transfer |
| CN104654864A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Honeycomb block for chemical heat storage |
| CN104650821A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Solid particle blocks for chemical heat storage |
| CN107098718A (en) * | 2017-05-12 | 2017-08-29 | 哈尔滨工业大学 | It is a kind of suppress to sinter, the calcium base chemical heat storage material that strengthens heat conduction and preparation method thereof |
| CN110325615A (en) * | 2017-03-03 | 2019-10-11 | 日产化学株式会社 | Heat-storing material comprising cyanuric acid metal salt |
| WO2023149361A1 (en) * | 2022-02-01 | 2023-08-10 | 株式会社白石中央研究所 | Calcium hydroxide slurry for chemical heat storage material, method for producing calcium hydroxide slurry for chemical heat storage material, chemical heat storage material, method for producing chemical heat storage material, and method for performing chemical heat storage |
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| CN1390911A (en) * | 2002-06-17 | 2003-01-15 | 昆明理工大学 | Process for preparing metal-base composite fused salt as heat accumulating material |
| CN1935932A (en) * | 2006-09-14 | 2007-03-28 | 电子科技大学 | High-heat-conducting composite phase-transition energy-storage material and its preparing method |
| WO2012042694A1 (en) * | 2010-09-28 | 2012-04-05 | パナソニック株式会社 | Thermal storage device and air conditioning apparatus provided therewith |
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| CN1390911A (en) * | 2002-06-17 | 2003-01-15 | 昆明理工大学 | Process for preparing metal-base composite fused salt as heat accumulating material |
| CN1935932A (en) * | 2006-09-14 | 2007-03-28 | 电子科技大学 | High-heat-conducting composite phase-transition energy-storage material and its preparing method |
| WO2012042694A1 (en) * | 2010-09-28 | 2012-04-05 | パナソニック株式会社 | Thermal storage device and air conditioning apparatus provided therewith |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096269A (en) * | 2013-04-12 | 2014-10-15 | 重庆润泽医药有限公司 | Making method of aperture connected support |
| CN104096269B (en) * | 2013-04-12 | 2015-11-25 | 温州智创科技有限公司 | A kind of aperture is communicated with the preparation method of support |
| CN103289654A (en) * | 2013-07-03 | 2013-09-11 | 西北大学 | Expanded graphite composite heat storage material, as well as preparation method and application thereof |
| CN103289654B (en) * | 2013-07-03 | 2015-07-08 | 西北大学 | Expanded graphite composite heat storage material, as well as preparation method and application thereof |
| CN104650820A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Formula of chemical heat storage material for heat transfer |
| CN104654864A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Honeycomb block for chemical heat storage |
| CN104650821A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Solid particle blocks for chemical heat storage |
| CN110325615A (en) * | 2017-03-03 | 2019-10-11 | 日产化学株式会社 | Heat-storing material comprising cyanuric acid metal salt |
| CN107098718A (en) * | 2017-05-12 | 2017-08-29 | 哈尔滨工业大学 | It is a kind of suppress to sinter, the calcium base chemical heat storage material that strengthens heat conduction and preparation method thereof |
| WO2023149361A1 (en) * | 2022-02-01 | 2023-08-10 | 株式会社白石中央研究所 | Calcium hydroxide slurry for chemical heat storage material, method for producing calcium hydroxide slurry for chemical heat storage material, chemical heat storage material, method for producing chemical heat storage material, and method for performing chemical heat storage |
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| CN102732231B (en) | 2015-03-18 |
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