CN104164218A - Heat storage material and preparation method thereof - Google Patents
Heat storage material and preparation method thereof Download PDFInfo
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- CN104164218A CN104164218A CN201410330811.8A CN201410330811A CN104164218A CN 104164218 A CN104164218 A CN 104164218A CN 201410330811 A CN201410330811 A CN 201410330811A CN 104164218 A CN104164218 A CN 104164218A
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- gac
- copper powder
- powder mixture
- paraffin
- heat accumulating
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Abstract
The invention discloses a heat storage material and a preparation method, the heat storage material is prepared by mixing paraffin, expandable graphite, active carbon and copper powder. wherein paraffin mass fraction accounts for 65%, paraffin melting point is selected between 50 and 70 DEG C, expandable graphite mass fraction accounts for 15%, and mass fraction sum of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release, no corrosivity to metal containers and unchanged profile after phase transition.
Description
One, technical field
The present invention relates to phase-change heat-storage material field, refer in particular to a kind of heat accumulating that utilizes organism and expanded graphite, gac and copper powder compounded preparation.
Two, background technology
Energy-conservation and environmental protection is an important topic of field of energy utilization, and the latent heat of phase change storage power of utilizing phase-change heat-storage material is a kind of novel power-saving technology.Phase change material, in phase transition process, absorbs the heat of surrounding environment, and when envrionment temperature reduces around, environment release of heat, controls ambient temperature and energy-conservation object thereby reach towards periphery.It all has wide practical use in fields such as sun power utilization, energy recovery, air conditioner refrigerating, building energy conservation, aerospace.
Sun power, as a kind of energy of inexpensive clean, is widely used in the middle of productive life at present, but because the supply and demand of sun power quantitatively with on the time can not well be mated and coordinate, causes mass energy waste.As sun power surplus on daytime, cause sun power to waste, and night and overcast and rainy sun power are not enough.The current poor shortcoming of heat accumulating ubiquity heat conductivility, the phase-change thermal storage parts of therefore making, due to poor thermal conductivity, cannot be given full play to the heat storage function of heat accumulating.Secondly, during heat accumulating generation solid-liquid phase change, can cause leakage problem.
In order to address the above problem, can phase-change heat-storage material and the strong base material of certain capacity of heat transmission is compound, and add shaping material, and make a kind of composite phase-change heat-storage material, improve thermal conductivity and the sizing characteristic of heat accumulating.
Three, summary of the invention
The object of this invention is to provide a kind of heat accumulating, in the operating temperature range of the phase-change thermal storage temperature of this heat accumulating in solar water heater, latent heat of phase change is higher, and heat conductivility is better, while there is solid-liquid phase change, can keep shape invariance.
Another object of the present invention is to provide the preparation method of above-mentioned heat accumulating.
The object of the invention is to be achieved through the following technical solutions:
A kind of phase-change heat-storage material, it is characterized in that: this phase-change heat-storage material is mixed and formed by paraffin, gac, copper powder and expanded graphite, wherein Quality of Paraffin Waxes mark accounts for 65%, and select paraffin melting point between 50～70 ℃, expanded graphite massfraction accounts for 15%, and gac and copper powder massfraction total account for 20%.
The preparation method of above-mentioned composite phase-change heat-storage material, adopts following steps:
(1) using bar shaped activated carbon as negative electrode, be placed in copper electroplating liquid energising and electroplate, after gac is pulverized, is ground and obtain gac-copper powder mixture;
(2) expansible black lead and gac-copper powder mixture are installed to 3: 4 mass ratioes and mix, form expansible black lead-gac-copper powder mixture, be placed in 60 ℃ of vacuum drying ovens dry 10 hours;
(3) dried expansible black lead-gac-copper powder mixture is placed in to stainless steel vessel, is heated to 800 ℃ and expands 60 seconds, obtain expanded graphite;
(4) paraffin and expanded graphite-gac-copper powder mixture are mixed and heated to 80 ℃ of blend with the mass ratio by 6.5: 3.5, under agitation adsorb about 1 hour, make heat accumulating.
The present invention has three advantages:
(1) the heat accumulating heat conductivility that prepared by the present invention is higher, and heat absorption heat release speed is faster;
(2) heat accumulating that prepared by the present invention does not change its chemical property, for metal vessel, there is no corrodibility;
(3) heat accumulating that prepared by the present invention can not change its profile when phase transformation, can effectively prevent from revealing.
Four, embodiment
With example, embodiments of the present invention are described further below:
Using bar shaped activated carbon as negative electrode, be placed in copper electroplating liquid energising and electroplate, after gac is pulverized, is ground and obtain gac-copper powder mixture; Expansible black lead and gac-copper powder mixture are installed to 3: 4 mass ratioes and mix, form expansible black lead-gac-copper powder mixture, be placed in 60 ℃ of vacuum drying ovens dry 10 hours; Dried expansible black lead-gac-copper powder mixture is placed in to stainless steel vessel, is heated to 800 ℃ and expands 60 seconds, obtain expanded graphite; Get 65g fusing point and mix with 35g expanded graphite-gac-copper powder mixture at the paraffin of 60 ℃, be heated to 80 ℃ of blend, under agitation adsorb about 1 hour, make heat accumulating.The transformation temperature of this material is 60 ℃, and latent heat of phase change is 126kJ/kg.
Claims (2)
1. a heat accumulating, it is characterized in that: this heat accumulating is mixed and formed by paraffin, gac, copper powder and expanded graphite, wherein Quality of Paraffin Waxes mark accounts for 65%, and select paraffin melting point between 50～70 ℃, expanded graphite massfraction accounts for 15%, and gac and copper powder massfraction total account for 20%.
2. a preparation method for heat accumulating claimed in claim 1, is characterized in that it comprises the steps:
(1) using bar shaped activated carbon as negative electrode, be placed in copper electroplating liquid energising and electroplate, after gac is pulverized, is ground and obtain gac-copper powder mixture;
(2) expansible black lead and gac-copper powder mixture are installed to 3: 4 mass ratioes and mix, form expansible black lead-gac-copper powder mixture, be placed in 60 ℃ of vacuum drying ovens dry 10 hours;
(3) dried expansible black lead-gac-copper powder mixture is placed in to stainless steel vessel, is heated to 800 ℃ and expands 60 seconds, obtain expanded graphite;
(4) paraffin and expanded graphite-gac-copper powder mixture are mixed and heated to 80 ℃ of blend with the mass ratio by 6.5: 3.5, under agitation adsorb about 1 hour, make heat accumulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330811.8A CN104164218A (en) | 2014-07-09 | 2014-07-09 | Heat storage material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330811.8A CN104164218A (en) | 2014-07-09 | 2014-07-09 | Heat storage material and preparation method thereof |
Publications (1)
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| CN104164218A true CN104164218A (en) | 2014-11-26 |
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| CN201410330811.8A Pending CN104164218A (en) | 2014-07-09 | 2014-07-09 | Heat storage material and preparation method thereof |
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| CN (1) | CN104164218A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107112609A (en) * | 2016-07-01 | 2017-08-29 | 深圳市大疆创新科技有限公司 | Battery and the mobile platform using the battery |
| CN109124865A (en) * | 2018-10-09 | 2019-01-04 | 上海暖友实业有限公司 | A kind of constant temperature phase transformation sheet type spontaneous heating body and preparation method thereof |
| CN109135680A (en) * | 2017-06-28 | 2019-01-04 | 无锡新祥恒包装科技有限公司 | One kind keeping the temperature 12 ~ 18 DEG C of phase change cold accumulating agents for insulin |
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| CN102286268A (en) * | 2011-06-27 | 2011-12-21 | 南京大学 | Reinforced conductive composite phase-change heat storage material and preparation method thereof |
| CN103334039A (en) * | 2013-07-15 | 2013-10-02 | 深圳市东维丰电子科技股份有限公司 | Copper-based nano diamond composite material and preparation method thereof |
| CN103773318A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | Preparation method of phase-change energy-storage material |
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- 2014-07-09 CN CN201410330811.8A patent/CN104164218A/en active Pending
Patent Citations (3)
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| CN102286268A (en) * | 2011-06-27 | 2011-12-21 | 南京大学 | Reinforced conductive composite phase-change heat storage material and preparation method thereof |
| CN103773318A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | Preparation method of phase-change energy-storage material |
| CN103334039A (en) * | 2013-07-15 | 2013-10-02 | 深圳市东维丰电子科技股份有限公司 | Copper-based nano diamond composite material and preparation method thereof |
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| 刘芳，于航: "相变材料蓄能研究进展及其应用", 《建筑热能通风空调》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107112609A (en) * | 2016-07-01 | 2017-08-29 | 深圳市大疆创新科技有限公司 | Battery and the mobile platform using the battery |
| CN109135680A (en) * | 2017-06-28 | 2019-01-04 | 无锡新祥恒包装科技有限公司 | One kind keeping the temperature 12 ~ 18 DEG C of phase change cold accumulating agents for insulin |
| CN109124865A (en) * | 2018-10-09 | 2019-01-04 | 上海暖友实业有限公司 | A kind of constant temperature phase transformation sheet type spontaneous heating body and preparation method thereof |
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Application publication date: 20141126 |