CN104232025A - Low-temperature composite phase change cold storage agent and preparation method thereof - Google Patents
Low-temperature composite phase change cold storage agent and preparation method thereof Download PDFInfo
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- CN104232025A CN104232025A CN201410555371.6A CN201410555371A CN104232025A CN 104232025 A CN104232025 A CN 104232025A CN 201410555371 A CN201410555371 A CN 201410555371A CN 104232025 A CN104232025 A CN 104232025A
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Abstract
The invention discloses low-temperature composite phase change cold storage agent and a preparation method thereof. The low-temperature composite phase change cold storage agent is composed of 15-16.5% of sodium chloride, 12.5% of glycerol and rest of water by weight. The preparation method for the low-temperature composite phase change cold storage agent includes steps that S1, preparing 20-22% of sodium chloride solution according to the mass percent; S2, preparing 50% of glycerol according to the mass percent; S3, pouring the solution of the S1 and the solution of the S2 into a vessel according to the ratio of 3: 1 to mix, and using a magnetic stirrer to stir uniformly. The low-temperature composite phase change cold storage agent is low in phase change temperature, large in phase change latent heat, easy to prepare, low in cost, low in use concentration, small in volume change in the phase change process, safe to use, non-toxic, odorless, pollution free, and small in corrosivity.
Description
Technical field
The present invention relates to Cool Storage Technology field, be specifically related to a kind of low temperature composite phase change cold storage agent and preparation method thereof.
Background technology
Low-temperature cold accumulation material mainly inorganic salt solution and the organic phase change material that current application is more.Inorganic salt solution (sodium chloride solution, ammonium chloride solution etc.) has the advantages such as transformation temperature is low, latent heat of phase change is large, but there will be the unfavorable factors such as cold-peace is separated in use procedure, affect its cold-storage ability, to metal vessel, there is larger corrodibility in addition.Organic phase change material (mainly alcohols, alkane and paraffin) have condensate depression little, without the advantage such as phenomenon of phase separation, corrodibility is little, but the general transformation temperature of organic-based material is higher, latent heat of phase change and thermal conductivity less.Therefore single material can not meet the performance requriements of cold storage agent well, if can by the aqueous solution of inorganic salt solution and alcohols, and comprehensive the two advantage, reduce the impact of respective shortcoming, just can obtain the composite phase-change cool storage material of superior performance.At present, have a lot at the low temperature composite phase-change material used both at home and abroad, but wherein the transformation temperature of major part formula is more than-20 DEG C, can only provide the storing environment of-10 DEG C ~ about-15 DEG C, be difficult to meet refrigeration requirements for the food, chemical products, biologics etc. required lower than-15 DEG C.
Summary of the invention
Order of the present invention is to overcome above-mentioned the deficiencies in the prior art, provides that a kind of condensate depression is little, transformation temperature is low and the low temperature composite phase change cold storage agent of the heavy duty detergent that latent heat of phase change is large.
Object of the present invention is achieved by the following technical programs:
A kind of low temperature composite phase change cold storage agent, by percentage to the quality, is made up of following component proportioning:
Sodium-chlor 15 ~ 16.5%,
Glycerol 12.5%,
Surplus is water.
Preferably, described water is pure water or distilled water, can improve solution purity, to reach better technique effect.
Preferably, the transformation temperature of this cold storage agent is-30.3 ~-29.5 DEG C, and latent heat of phase change is 155.2 ~ 160.8J/g.
The preparation method of low temperature composite phase change cold storage agent of the present invention, comprises the steps:
S1. according to the sodium chloride solution of mass percent preparation 20 ~ 22%;
S2. according to the glycerin solution of mass percent preparation 50%;
S3. gained solution in step S1 and S2 is poured in container in the ratio of 3:1 and mix, simultaneously extremely even by magnetic stirrer.
Compared with prior art, the present invention has following beneficial effect:
1) the present invention is lower than now widely used ice conserve cold transformation temperature, and compared with melting salt cold storage agent altogether with low temperature, latent heat of phase change value is large, and its transformation temperature is-30.3 ~-29.5 DEG C, and latent heat of phase change is 155.2 ~ 160.8J/g.
2) cold storage agent cost of the present invention is low, and preparation technology is simple, and working concentration is low, and in phase transition process, volume change is little, use safety, nontoxic, tasteless, pollution-free, corrodibility is little.
3) applied range of the present invention, is specially adapted to the cold storing and fresh-keeping in transit such as some fresh product, chemical products, biologics, also can be used as the cold storage agent of low-temperature cold accumulation freezer.
Generally speaking, cold storage agent preparation technology simple possible of the present invention, easy to operate, economic worth is high; The cold storage agent environment-protecting asepsis prepared, has lower transformation temperature and larger latent heat of phase change, and prove through experiment, the embodiment transformation temperature of this material is-30.3 ~-29.5 DEG C, and latent heat of phase change is 155.2 ~ 160.8J/g.
Accompanying drawing explanation
Fig. 1 is the DSC curve of the embodiment of the present invention 1;
Fig. 2 is the DSC curve of the embodiment of the present invention 2;
Fig. 3 is the DSC curve of the embodiment of the present invention 3.
Embodiment
Below in conjunction with specific embodiment the present invention made and elaborating further, but embodiment does not limit in any form the present invention.
Embodiment 1
In the present embodiment, a kind of low temperature composite phase change cold storage agent, calculates according to mass percent, is made up of following component proportioning:
Sodium-chlor 15%,
Glycerol 12.5%,
Water 72.5%.
Wherein, above-mentioned water can select pure water or distilled water.
The preparation method of described low temperature composite phase change cold storage agent, comprises following several step:
S1. according to the sodium chloride solution of mass percent preparation 20%: pure water or distilled water are injected stirred vessel, adds sodium-chlor, fully stir and sodium-chlor is dissolved, obtain the sodium chloride solution of 20%;
S2. according to the glycerin solution of mass percent preparation 50%: pure water or distilled water are injected stirred vessel, adds glycerol, stir obtain 50% glycerin solution;
S3. the sodium chloride solution of gained in step S1 and S2 and glycerin solution are poured in container in the ratio of 3:1 and mix, simultaneously with magnetic stirrer to evenly low temperature composite phase change cold storage agent.
The transformation temperature of low temperature composite phase change cold storage agent is as shown in Figure 1-30.3 DEG C, and latent heat of phase change is 158.9J/g.
Embodiment 2
In the present embodiment, a kind of low temperature composite phase change cold storage agent, calculates according to mass percent, is made up of following component proportioning:
Sodium-chlor 15.75%,
Glycerol 12.5%,
Water 71.75%.
Wherein, above-mentioned water can select pure water or distilled water.
The preparation method of described low temperature composite phase change cold storage agent, comprises following several step:
S1. according to the sodium chloride solution of mass percent preparation 21%: pure water or distilled water are injected stirred vessel, adds sodium-chlor, fully stir and sodium-chlor is dissolved, obtain the sodium chloride solution of 21%;
S2. according to the glycerin solution of mass percent preparation 50%: pure water or distilled water are injected stirred vessel, adds glycerol, stir obtain 50% glycerin solution;
S3. the sodium chloride solution of gained in step S1 and S2 and glycerin solution are poured in container in the ratio of 3:1 and mix, simultaneously with magnetic stirrer to evenly low temperature composite phase change cold storage agent.
The transformation temperature of low temperature composite phase change cold storage agent is as shown in Figure 2-30.0 DEG C, and latent heat of phase change is 155.2J/g.
Embodiment 3
In the present embodiment, a kind of low temperature composite phase change cold storage agent, calculates according to mass percent, is made up of following component proportioning:
Sodium-chlor 16.5%,
Glycerol 12.5%,
Water 71%.
Wherein, above-mentioned water can select pure water or distilled water.
The preparation method of described low temperature composite phase change cold storage agent, comprises following several step:
S1. according to the sodium chloride solution of mass percent preparation 22%: pure water or distilled water are injected stirred vessel, adds sodium-chlor, fully stir and sodium-chlor is dissolved, obtain the sodium chloride solution of 22%;
S2. according to the glycerin solution of mass percent preparation 50%: pure water or distilled water are injected stirred vessel, adds glycerol, stir obtain 50% glycerin solution;
S3. the sodium chloride solution of gained in step S1 and S2 and glycerin solution are poured in container in the ratio of 3:1 and mix, simultaneously with magnetic stirrer to evenly low temperature composite phase change cold storage agent.
The transformation temperature of low temperature composite phase change cold storage agent is as shown in Figure 3-29.5 DEG C, and latent heat of phase change is 160.8J/g.
Claims (4)
1. a low temperature composite phase change cold storage agent, is characterized in that: by percentage to the quality, is made up of following component proportioning:
Sodium-chlor 15 ~ 16.5%,
Glycerol 12.5%,
Surplus is water.
2. low temperature composite phase change cold storage agent according to claim 1, is characterized in that: described water is pure water or distilled water.
3. low temperature composite phase change cold storage agent according to claim 1, is characterized in that: the transformation temperature of this cold storage agent is-30.3 ~-29.5 DEG C, and latent heat of phase change is 155.2 ~ 160.8J/g.
4. the preparation method of low temperature composite phase change cold storage agent according to claim 1 or 2 or 3, is characterized in that, comprise the steps:
S1. according to the sodium chloride solution of mass percent preparation 20 ~ 22%;
S2. according to the glycerin solution of mass percent preparation 50%;
S3. gained solution in step S1 and S2 is poured in container in the ratio of 3:1 and mix, simultaneously extremely even by magnetic stirrer.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927780A (en) * | 2015-07-08 | 2015-09-23 | 山东省立医院 | Cold accumulating agent and preparation method thereof |
| CN106010460A (en) * | 2016-06-28 | 2016-10-12 | 周开雄 | Phase-change cold storage composite material and preparation method thereof |
| CN106433566A (en) * | 2016-09-20 | 2017-02-22 | 天津瀛德科技有限公司 | Food-grade cold storage agent |
| CN108913099A (en) * | 2018-07-10 | 2018-11-30 | 长沙鲜源生物科技有限公司 | A kind of preparation method of cold-storage material, cold-storage material, cool accumulating block and its application |
| CN109913180A (en) * | 2019-03-23 | 2019-06-21 | 石河子大学 | A kind of low temperature phase change coolant |
| CN110205103A (en) * | 2019-07-11 | 2019-09-06 | 武汉中科先进技术研究院有限公司 | A kind of biodegradable microcapsules cold-storage material and preparation method thereof |
| CN111422498A (en) * | 2020-04-16 | 2020-07-17 | 高广利 | Thermal insulation bag applied to refrigeration transportation and preparation method thereof |
| CN114181672A (en) * | 2022-01-07 | 2022-03-15 | 北部湾大学 | Low-temperature phase change cold storage material |
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| US5976400A (en) * | 1997-09-19 | 1999-11-02 | Thermo Solutions, Inc. | Phase change material and use |
| CN1493644A (en) * | 2003-09-09 | 2004-05-05 | 上海市印染技术研究所 | Environmental protection type cool storage medium |
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2014
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| US5976400A (en) * | 1997-09-19 | 1999-11-02 | Thermo Solutions, Inc. | Phase change material and use |
| CN1493644A (en) * | 2003-09-09 | 2004-05-05 | 上海市印染技术研究所 | Environmental protection type cool storage medium |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927780A (en) * | 2015-07-08 | 2015-09-23 | 山东省立医院 | Cold accumulating agent and preparation method thereof |
| CN106010460A (en) * | 2016-06-28 | 2016-10-12 | 周开雄 | Phase-change cold storage composite material and preparation method thereof |
| CN106433566A (en) * | 2016-09-20 | 2017-02-22 | 天津瀛德科技有限公司 | Food-grade cold storage agent |
| CN108913099A (en) * | 2018-07-10 | 2018-11-30 | 长沙鲜源生物科技有限公司 | A kind of preparation method of cold-storage material, cold-storage material, cool accumulating block and its application |
| CN109913180A (en) * | 2019-03-23 | 2019-06-21 | 石河子大学 | A kind of low temperature phase change coolant |
| CN110205103A (en) * | 2019-07-11 | 2019-09-06 | 武汉中科先进技术研究院有限公司 | A kind of biodegradable microcapsules cold-storage material and preparation method thereof |
| CN110205103B (en) * | 2019-07-11 | 2021-03-30 | 武汉中科先进技术研究院有限公司 | Biodegradable microcapsule cold storage agent and preparation method thereof |
| CN111422498A (en) * | 2020-04-16 | 2020-07-17 | 高广利 | Thermal insulation bag applied to refrigeration transportation and preparation method thereof |
| CN111422498B (en) * | 2020-04-16 | 2022-09-16 | 浩添(厦门)储能股份有限公司 | Thermal insulation bag applied to refrigeration transportation and preparation method thereof |
| CN114181672A (en) * | 2022-01-07 | 2022-03-15 | 北部湾大学 | Low-temperature phase change cold storage material |
| CN114181672B (en) * | 2022-01-07 | 2024-03-22 | 北部湾大学 | Low-temperature phase-change cold storage material |
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Application publication date: 20141224 |