CN106675525A - Phase change cold storage material with double phase change points and preparation method thereof - Google Patents
Phase change cold storage material with double phase change points and preparation method thereof Download PDFInfo
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- CN106675525A CN106675525A CN201611067113.9A CN201611067113A CN106675525A CN 106675525 A CN106675525 A CN 106675525A CN 201611067113 A CN201611067113 A CN 201611067113A CN 106675525 A CN106675525 A CN 106675525A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/066—Cooling mixtures; De-icing compositions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses a phase change cold storage material with double phase change points and a preparation method thereof. The phase change cold storage material with double phase change points is prepared from the following raw materials in percentage by weight: 0 to 60 percent of inorganic salts, 5 to 60 percent of organic phase change materials, 20 to 95 percent of de-ionized water, 0.1 to 2 percent of surfactants, 1 to 5 percent of thickening agents and 1 to 5 percent of nucleating agents. The phase change cold storage material provided by the invention has double phase change points; the temperature can be controlled between the double phase change point temperatures in the material distribution process; the freezing and cold storage effect is achieved; the proper unfreezing effect can also be achieved; in addition, the material has high phrase change latent heat enthalpy value (greater than 220kJ/kg); the more efficient and faster temperature reduction effect is achieved; in addition, the temperature can be permanently maintained in a specific temperature range.
Description
Technical field
The present invention relates to phase-change material technical field, more particularly to a kind of phase-change material for cold storage and the preparation side of two-phase height
Method.
Background technology
With the fast development of China's economic, the rhythm of life of people speeds, quality of life increases, will to mouthfeels such as food
Ask and gradually step up, thus have the requirement of high-quality to food fresh keeping state, especially during Cold Chain Logistics.Same change
Also there is strong demand in work, medical Cold Chain Logistics field to low temperature range.In existing cold chain system, related phase transformation
Material emerges in large numbers in succession, and has many research institution and enterprise all to carry out substantial amounts of research-and-development activity.
Nowadays on market, 0~15 DEG C of phase-change material is comparatively short, and cold items storage uses refrigeration machine, no
Only energy consumption is serious, and cost of transportation increases, once refrigeration machine goes wrong, may result in temperature control failure and article occurs
Addle.Additionally, freezing food materials thaw after transportation and are also required to timeliness, certain hour and the energy are consumed.Therefore, it is explorative
Can stablize, latent heat of phase change is high, particularly important without phase separation, energy-efficient new type low temperature phase transformation storage cold material.
The content of the invention
It is an object of the invention to provide the phase-change material for cold storage and its preparation technology of a kind of non-single transformation temperature, its accumulation of heat
Density is big, can be efficiently applied to low temperature cold chain logistics field.
The present invention is soluble in water by one or two phase-change materials, adds surfactant, thickening agent, nucleator, mixing
Uniformly it is configured to required phase-change material.
This phase-change material can be prepared merely by organic material and water, or be matched somebody with somebody for organic and inorganic salt solution are compound
System.
The present invention is adopted the technical scheme that：
The phase-change material for cold storage of the two-phase height of the present invention includes the raw material of following percentage by weight：Inorganic salt 0~60%,
Organic phase change material 5~60%, deionized water 20~92%, surfactant 0.1~2%, thickening agent 1~5%, nucleator 1
~5%.
It is preferred that：The phase-change material for cold storage of the two-phase height of the present invention includes the raw material of following percentage by weight：Inorganic salt
23%, organic phase change material 40%, deionized water 30%, surfactant 1%, thickening agent 3%, nucleator 3%.
Described inorganic salt is potassium chloride, Sodium Chloride, ammonium chloride, sodium nitrate, calcium chloride, potassium bicarbonate, sodium bicarbonate, chlorine
Change the one kind in magnesium.
Described organic phase change material pyridine, erythritol, Mannitol, Sorbitol, xylitol, trimethylolpropane, four
One or more in butylammonium bromide, tetrabutyl ammonium fluoride, tetrabutylammonium chloride, tetrahydrofuran, hexamethylene.
Described surfactant be straight-chain alkyl sulfate, sodium laurylsulfate, tween, sodium n-alkylbenzenesulfonate,
One or more in span, DBSA, fatty alcohol-polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfate.
Described straight-chain alkyl sulfate is dodecyl sodium sulfate, myristyl sodium sulfonate or sodium cetanesulfonate.
Described thickening agent be High hydrophilous resin, aerosil, polyacrylamide, carboxymethyl cellulose, bentonite,
One or more in sodium polyacrylate, gelatin.
Described nucleator is Borax, calcium phosphate, Pulvis Talci, nano silicon, and nano titanium oxide is nano oxidized
Aluminum, one or more in copper sulfide, calcium oxide, montmorillonite.
The preparation method of the phase-change material for cold storage of the two-phase height of the present invention is comprised the following steps that：
Certain density inorganic salt solution is first prepared, organic phase change material is subsequently added, or only preparation Organic substance is water-soluble
Liquid, quickly stirs to being completely dissolved；Subsequently thickening agent and surfactant are added, stir speed (S.S.) is set as 500~1000r/
Min is reaching thickening effect；After final nucleator to be added, you can obtain the phase-change material for cold storage of the present invention.It is preferred that stirring speed
Rate is 800r/min.
The positive effect of the present invention is as follows：
Phase-change material provided by the present invention has two-phase height, its both can in logistics progress by temperature control in two-phase
Between height temperature, that is, accomplish the effect of freezing and refrigeration, the effect of appropriate defrosting is can reach again.And the material phase transformation latent heat enthalpy
High (>=220kJ/kg), not only there is highly efficient efficiently cooling-down effect, and long sustaining can be accomplished in specified temp model
In enclosing.
The present invention obtains a kind of phase-change material of non-single phase transformation temperature pointses, can be applicable to specific field, such as phase transformation
Air conditioning system, food refrigerated logistics etc., not only there is highly efficient efficiently cooling-down effect, and long sustaining can be accomplished in spy
In the range of constant temperature degree.
Description of the drawings
Fig. 1 is DSC test design sketchs.
Specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of phase change heat storage material of many transformation temperatures, is prepared using following quality materialses level step：Xylitol 30g,
Potassium chloride 20g, deionized water 43g, span 1.8g, carboxymethyl cellulose 3g, Borax 2.2g.First Sodium Chloride is dissolved in into deionization
Sodium chloride brine is configured in water, xylitol is added, is quickly stirred to being completely dissolved, subsequently by span and carboxymethyl cellulose
Element is added, and is quickly stirred to viscous pasty state with the stir speed (S.S.) of 800r/min, ultimately joins Borax, and stirring is sampled after 1 hour and surveyed
Determine DSC.
Its phase transition temperature is tested using differential calorimetric scan instrument (DSC), the phase that there are two phase transformation temperature pointses such as Fig. 1 is obtained
Become material, the peak temperature of two phase transformation temperature pointses is respectively 13 DEG C and -10 DEG C, and overall latent heat of phase change is 225kJ/kg, can be had
Effect is used for the whole process of Food Freezing and Cold Storage and relieving alcoholic intoxication.
Embodiment 2
A kind of phase change heat storage material of many transformation temperatures, is prepared using following quality materialses level step：Sorbitol 28g,
Deionized water 67g, fatty alcohol-polyoxyethylene ether 0.8g, gelatin 2g, copper sulfide 2.2g.Sorbitol is added first fast in ionized water
Speed stirring melts to be configured to organic solution completely, is subsequently added fatty alcohol-polyoxyethylene ether and gelatin, stirring with 800r/min
Mix speed quickly to stir to viscous pasty state, ultimately join copper sulfide, stirring is measured by sampling DSC after 1 hour.
Its phase transition temperature is tested using differential calorimetric scan instrument (DSC), the phase transformation material with two phase transformation temperature pointses is obtained
Material, the peak temperature of two phase transformation temperature pointses is respectively 10 DEG C and -1 DEG C, and overall latent heat of phase change is 230kJ/kg, can effective control
Spin manifold temperature during special medicine Refrigerated Transport.
Embodiment 3
A kind of phase change heat storage material of many transformation temperatures, is prepared using following quality materialses level step：Erythritol
40g, Sodium Chloride 20g, deionized water 35g, sodium laurylsulfate 1.2g, aerosil 2g, calcium oxide 1.8g.First will
20g potassium chloride is dissolved in deionized water and is configured to potassium chloride salt solution, adds erythritol, quickly stirs to being completely dissolved,
Subsequently aerosil and moon silicic acid sodium sulfate are added, are quickly stirred to viscous pasty state with the stir speed (S.S.) of 800r/min,
Calcium oxide is ultimately joined, stirring is measured by sampling DSC after 1 hour.
Its phase transition temperature is tested using differential calorimetric scan instrument (DSC), the phase transformation material with two phase transformation temperature pointses is obtained
Material, the peak temperature of two phase transformation temperature pointses is respectively 20 DEG C and -20 DEG C, and overall latent heat of phase change is 230kJ/kg, can effectively be controlled
Spin manifold temperature during pharmacy product Refrigerated Transport.
Surfactant may be homogenously dispersed in liquid as stabilizer, compatible between thickening agent and solution to improve
Property, using cooperatively with thickening agent can avoid layers of material or split-phase；Simultaneously its also can as nucleator make phase-change material uniformly into
Core, reduces degree of supercooling.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (10)
1. a kind of phase-change material for cold storage of two-phase height, it is characterised in that：The phase-change material for cold storage of described two-phase height includes
The raw material of following percentage by weight：Inorganic salt 0~60%, organic phase change material 5~60%, deionized water 20~92%, surface
Activating agent 0.1~2%, thickening agent 1~5%, nucleator 1~5%.
2. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：The phase transformation of described two-phase height
Cool storage material includes the raw material of following percentage by weight：Inorganic salt 23%, organic phase change material 40%, deionized water 30%, table
Face activating agent 1%, thickening agent 3%, nucleator 3%.
3. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：Described inorganic salt is chlorination
One kind in potassium, Sodium Chloride, ammonium chloride, sodium nitrate, calcium chloride, potassium bicarbonate, sodium bicarbonate, magnesium chloride.
4. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：Described organic phase change material pyrrole
Pyridine, erythritol, Mannitol, Sorbitol, xylitol, trimethylolpropane, tetrabutyl ammonium bromide, tetrabutyl ammonium fluoride, four fourths
One or more in ammonium chloride, tetrahydrofuran, hexamethylene.
5. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：Described surfactant is straight
Alkyl group sodium sulfate, sodium laurylsulfate, tween, sodium n-alkylbenzenesulfonate, span, DBSA, poly alkyl alcohol
One or more in oxygen vinyl Ether, fatty alcohol polyoxyethylene ether sulfate.
6. the phase-change material for cold storage of two-phase height as claimed in claim 5, it is characterised in that：Described straight-chain alkyl sulfate
For dodecyl sodium sulfate, myristyl sodium sulfonate or sodium cetanesulfonate.
7. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：Described thickening agent is high water absorption
One kind or several in resin, aerosil, polyacrylamide, carboxymethyl cellulose, bentonite, sodium polyacrylate, gelatin
Kind.
8. the phase-change material for cold storage of two-phase height as claimed in claim 1, it is characterised in that：Described nucleator be Borax,
Calcium phosphate, Pulvis Talci, nano silicon, nano titanium oxide, nano aluminium oxide, in copper sulfide, calcium oxide, montmorillonite
Plant or several.
9. the preparation method of the phase-change material for cold storage of the two-phase height as described in any one of claim 1-8, it is characterised in that：Institute
State comprising the following steps that for method：
Inorganic salt solution is first prepared, organic phase change material is subsequently added, or only prepares organic aqueous solution, quickly stirred to complete
CL；Subsequently thickening agent and surfactant are added, it is that 500~1000r/min is imitated with reaching thickening to set stir speed (S.S.)
Really；After final nucleator to be added, you can obtain the phase-change material for cold storage of the present invention.
10. preparation method as claimed in claim 9, it is characterised in that：Described stir speed (S.S.) is 800r/min.
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| CN107325793A (en) * | 2017-07-31 | 2017-11-07 | 河北麦森钛白粉有限公司 | A kind of phase change cold-storage composite and preparation method thereof |
| CN107556972A (en) * | 2017-08-24 | 2018-01-09 | 中国科学院青海盐湖研究所 | Normal low temperature phase change energy-accumulating medium and preparation method thereof |
| CN107699203A (en) * | 2017-08-31 | 2018-02-16 | 宁波利时日用品有限公司 | A kind of gluey agent, the purposes of gluey agent and quickly cooling goblet |
| CN108110151A (en) * | 2017-12-19 | 2018-06-01 | 桑德集团有限公司 | A kind of battery core aluminum-plastic membrane used for packaging and preparation method thereof and battery |
| CN108504335A (en) * | 2018-05-18 | 2018-09-07 | 东莞市兆荣节能科技有限公司 | A kind of phase-change material and its processing technology for air-conditioning |
| CN108892404A (en) * | 2018-07-10 | 2018-11-27 | 安徽省神洲建材科技有限公司 | A kind of thermal insulation mortar aeroge-basalt composite fibre and preparation method thereof |
| 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 |
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| CN110406799A (en) * | 2018-04-26 | 2019-11-05 | 中毅新材料研究院（重庆）有限公司 | A kind of Medical low-temperature storage device with distant early warning function |
| CN110872486A (en) * | 2018-08-31 | 2020-03-10 | 青海大学 | Method for simultaneously inhibiting supercooling of hydrous salt phase change material and enhancing heat transfer performance |
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