CN104164221A - Novel phase-change heat-storage material and preparation method thereof - Google Patents
Novel phase-change heat-storage material and preparation method thereof Download PDFInfo
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- CN104164221A CN104164221A CN201410330833.4A CN201410330833A CN104164221A CN 104164221 A CN104164221 A CN 104164221A CN 201410330833 A CN201410330833 A CN 201410330833A CN 104164221 A CN104164221 A CN 104164221A
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- gac
- change heat
- copper powder
- paraffin
- storage material
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Abstract
The invention discloses a novel phase-change heat-storage material and a preparation method thereof, the phase-change heat-storage material is composed of paraffin, expandable graphite, active carbon and copper powder by mixing, wherein paraffin mass fraction accounts for 60%, the paraffin melting point is selected between 50-70 DEG C, expandable graphite mass fraction accounts for 20%, and sum of mass fraction of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release speed, no corrosivity to metal containers and no changed profile after phase change.
Description
One, technical field
The present invention relates to phase-change heat-storage material field, refer in particular to a kind of New-type phase change 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 towards periphery, controls ambient temperature and energy-conservation object thereby reach.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,, when heat accumulating generation solid-liquid phase change, can cause leakage problem.
In order to address the above problem, can be by compound to phase-change heat-storage material and the strong base material of certain capacity of heat transmission, and add shaping material, and make a kind of New-type phase change heat accumulating, 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 New-type phase change heat accumulating, in the operating temperature range of the transformation temperature of this phase-change heat-storage material 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 New-type phase change heat accumulating.
The object of the invention is to be achieved through the following technical solutions:
A kind of New-type phase change heat accumulating, 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 60%, and select paraffin melting point between 50～70 DEG C, expanded graphite massfraction accounts for 20%, and gac and copper powder massfraction total account for 20%.
The preparation method of above-mentioned New-type phase change heat accumulating, adopts following steps:
(1) be placed in copper electroplating liquid energising using bar shaped activated carbon as negative electrode and electroplate, after gac is pulverized and is obtained gac-copper powder mixture;
(2) divide two container splendid attires by expansible black lead and gac-copper powder mixture, be placed in 60 DEG C of vacuum drying ovens dry 10 hours;
(3) dried expansible black lead powder is placed in to stainless steel vessel, is heated to 800 DEG C and expands 60 seconds, obtain expanded graphite;
(4) paraffin, gac-copper powder mixture and expanded graphite are mixed and heated to 80 DEG C of blend by the mass ratio of 6: 2: 2, under agitation adsorb about 1 hour, make New-type phase change heat accumulating.
The present invention has three advantages:
(1) the New-type phase change heat accumulating heat conductivility that prepared by the present invention is higher, and heat absorption heat release speed is faster;
(2) the New-type phase change heat accumulating that prepared by the present invention does not change its chemical property, there is no corrodibility for metal vessel;
(3) the New-type phase change heat accumulating that prepared by the present invention can not change its profile in the time of phase transformation, can effectively prevent from revealing.
Four, embodiment
With example, embodiments of the present invention are described further below:
Be placed in copper electroplating liquid energising using bar shaped activated carbon as negative electrode and electroplate, after gac is pulverized and is obtained gac-copper powder mixture; Divide two container splendid attires by expansible black lead and gac-copper powder mixture, be placed in 60 DEG C of vacuum drying ovens dry 10 hours; Dried expansible black lead powder is placed in to stainless steel vessel, is heated to 800 DEG C and expands 60 seconds, obtain expanded graphite; Get 60g fusing point and mix with 20g expanded graphite at paraffin, 20g gac-copper powder mixture of 60 DEG C, be heated to 80 DEG C of blend, under agitation adsorb about 1 hour, make phase-change heat-storage material.The transformation temperature of this material is 60 DEG C, and latent heat of phase change is 116kJ/kg.
Claims (2)
1. a New-type phase change heat accumulating, 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 60%, and select paraffin melting point between 50～70 DEG C, expanded graphite massfraction accounts for 20%, and gac and copper powder massfraction total account for 20%.
2. a preparation method for New-type phase change heat accumulating claimed in claim 1, is characterized in that it comprises the steps:
(1) be placed in copper electroplating liquid energising using bar shaped activated carbon as negative electrode and electroplate, after gac is pulverized and is obtained gac-copper powder mixture;
(2) divide two container splendid attires by expansible black lead and gac-copper powder mixture, be placed in 60 DEG C of vacuum drying ovens dry 10 hours;
(3) dried expansible black lead powder is placed in to stainless steel vessel, is heated to 800 DEG C and expands 60 seconds, obtain expanded graphite;
(4) paraffin, gac-copper powder mixture and expanded graphite are mixed and heated to 80 DEG C of blend by the mass ratio of 6: 2: 2, under agitation adsorb about 1 hour, make phase-change heat-storage material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410330833.4A CN104164221A (en) | 2014-07-09 | 2014-07-09 | Novel phase-change heat-storage material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410330833.4A CN104164221A (en) | 2014-07-09 | 2014-07-09 | Novel phase-change heat-storage material and preparation method thereof |
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| CN104164221A true CN104164221A (en) | 2014-11-26 |
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| CN201410330833.4A Pending CN104164221A (en) | 2014-07-09 | 2014-07-09 | Novel phase-change heat-storage material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701028A (en) * | 2015-11-15 | 2017-05-24 | 合肥杰事杰新材料股份有限公司 | Preparation method of composite phase-change heat-storage material |
| CN115142611A (en) * | 2022-07-01 | 2022-10-04 | 张家港飞腾复合新材料股份有限公司 | Light heat-insulating composite board for building wall and processing technology thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN102977859A (en) * | 2012-12-06 | 2013-03-20 | 盘锦科隆精细化工有限公司 | Preparation method of organic hybrid phase change 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 |
| 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 |
-
2014
- 2014-07-09 CN CN201410330833.4A patent/CN104164221A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102977859A (en) * | 2012-12-06 | 2013-03-20 | 盘锦科隆精细化工有限公司 | Preparation method of organic hybrid phase change 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701028A (en) * | 2015-11-15 | 2017-05-24 | 合肥杰事杰新材料股份有限公司 | Preparation method of composite phase-change heat-storage material |
| CN115142611A (en) * | 2022-07-01 | 2022-10-04 | 张家港飞腾复合新材料股份有限公司 | Light heat-insulating composite board for building wall and processing technology thereof |
| CN115142611B (en) * | 2022-07-01 | 2023-08-15 | 张家港飞腾复合新材料股份有限公司 | Light heat-insulating composite board for building wall and processing technology thereof |
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Application publication date: 20141126 |
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