CN105038715A - Hydrous salt cold storage agent with phase-transition temperature of 5-8 DEG C and preparation method thereof - Google Patents
Hydrous salt cold storage agent with phase-transition temperature of 5-8 DEG C and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a hydrous salt cold storage agent with the phase-transition temperature of 5-8 DEG C and a preparation method thereof. The cold storage agent comprises the following components in percentage by weight: 68.5-86.9% of a main energy storage agent, 1-3% of a supercooling prevention agent, 1-3% of an acid and alkali neutralizer, 1-5% of a thickening agent, 10-20% of a cooling agent, 0.1-0.5% of a crystal habit modifier and free water having the same molar ratio as that of sodium sulfate decahydrate. The phase-transition temperature of the cold storage agent can be adjusted in the range of 5-8 DEG C, the latent heat of phase change ranges from 20.0 J/g to 140 J/g, and the cold storage agent is long in cold-keeping time, simple in preparation process, low in cost, non-toxic, odourless, pollution-free and gelatinous and can be widely used for cold-chain transportation of fruits and vegetables, biomedical products and the like.
Description
Technical field
The present invention relates to a kind of salt hydrate cold storage agent, be applicable to the cold chain transportation of fruits and vegetables, food etc. and the low-temperature protection of biological medical product.The invention still further relates to a kind of preparation method of salt hydrate cold storage agent, belong to field of packaging material.
Background technology
At present, the application of Cool Storage Technology focuses mostly in the field such as air-conditioning and cold-storage, but along with the fast development of economy and improving constantly of people's living standard, and human consumer is increasing for the demand of fresh, high-quality and chilled of frozen processed food.Need the cold storage agent of suitable temp to carry out cooling to product in cold chain transportation process equally fresh-keeping, thus extend the quality guaranteed period of product, reduce the loss amount before consumption.
But the current a lot of problem of cold storage agent ubiquity on the market, as cold storage capacity is not enough, the cold insulation time is short, cannot reach the temperature needs of product in transportation.In addition, some cold storage agent complicated process of preparation, use cost is high, and once broken bag in transportation, content easily overflows, pollute packaged product, the invention provides a kind of salt hydrate cold storage agent and preparation method thereof, the transformation temperature of prepared cold storage agent is adjustable between 5 ~ 8 DEG C, and latent heat of phase change is higher, the cold insulation time is long, preparation technology is simple, and cost is low, and nonpoisonous and tasteless, pollution-free, in gel, the cold chain transportation of fruits and vegetables and biological medical product etc. can be widely used in.
Summary of the invention
For the cold storage agent Problems existing within the scope of current equal temperature on the market; as latent heat of phase change is lower; complicated process of preparation and use cost high; the present invention mainly provides a kind of salt hydrate cold storage agent, and the transformation temperature of this cold storage agent is adjustable between 5 ~ 8 DEG C, and latent heat of phase change is between 120 ~ 140J/g; in gel; be conducive to the form keeping cold storage agent in transportation, not easily flow out from packing bag simultaneously, thus protect wrapped product better.
Object of the present invention is achieved through the following technical solutions:
Transformation temperature is the cold storage agent of 5 ~ 8 DEG C, and it consists of: weight percent be 68.5 ~ 86.9% main energy storage agent, weight percent be 1 ~ 3% anti-ly cross cryogen, thickening material that acid-base neutralisation agent that weight percent is 1 ~ 3%, weight percent are 1 ~ 5%, weight percent be 10 ~ 20% cooling agent, weight percent be the Crystal habit modifiers of 0.1 ~ 0.5% and the free-water with sal glauberi equimolar ratio.
Main energy storage agent of the present invention is sal glauberi; Described anti-cryogen is excessively borax; Described acid-base neutralisation agent is boric acid; Described thickening material is self-control environment-friendly degradable Starch Super Water Absorbent Resin and gas-phase silica; Described cooling agent is Repone K and the ammonium chloride of different ratios; Described Crystal habit modifiers is Sodium hexametaphosphate 99.
The preparation method of cold storage agent of the present invention comprises the following steps:
(1) be that the W-Gum of 5% 68.5 ~ 86.9% carries out gelatinization at 80 DEG C by concentration, be then that the acrylic acid solution of 80% mixes with acrylamide by degree of neutralization, and stir.At 80 DEG C, in the starch of gelatinization, add initiator ammonium persulfate, then add mixing solutions and linking agent N ' N-methylene-bisacrylamide, after reaction, obtain gelatin product, gelatin product shredded and dries, pulverizing and obtain Powdered salt-tolerant super absorbent polymer;
(2) by weight percent be 68.5 ~ 86.9% main energy storage agent sal glauberi, weight percent be 1 ~ 3% anti-ly cross cryogen borax, weight percent be 1 ~ 3% acid-base neutralisation agent boric acid, weight percent be 1 ~ 5% thickening material salt-tolerant super absorbent polymer and gas-phase silica, weight percent be 10 ~ 20% cooling agent Repone K and ammonium chloride, weight percent be 0.1 ~ 0.5% Crystal habit modifiers Sodium hexametaphosphate 99 and free-water stir under the constant temperature of 35 ~ 40 DEG C, cooling, obtains salt hydrate cold storage agent.
The transformation temperature of cold storage agent of the present invention is 5 ~ 8 DEG C, and latent heat of phase change is 120 ~ 140J/g.
Compared with prior art, the present invention has following beneficial effect:
(1) by adding the cooling agent of different ratios, make the temperature of salt hydrate cold storage agent adjustable between 5 ~ 8 DEG C, latent heat of phase change between 120 ~ 140J/g, compared with the salt hydrate cold storage agent within the scope of equal temperature on the market, latent heat of phase change is large, and cold accumulation effects is good;
(2) use borax to cross cryogen as anti-, the cold problem of mistake of salt hydrate cold storage agent can be solved;
(3) use boric acid as acid-base neutralisation agent, prepare neutral cold storage agent;
(4) two kinds of thickening materials used in combination, effectively can solve the problem of phase separation of salt hydrate cold storage agent;
(5) safety non-toxic, does not add harmful material;
(6) can repeatedly use.
Embodiment
Below in conjunction with embodiment, further detailed description is done to the present invention, but the content of application claims protection is not limited thereto.
Embodiment 1
Concrete component and mass ratio are: the ammonium chloride of the sal glauberi salt hydrate of 8.0g, the borax of 0.25g, the boric acid of 0.25g, the super absorbent resin of 0.15g and the gas-phase silica of 0.1g, the Repone K of 0.5g and 0.75g, the Sodium hexametaphosphate 99 of 0.01g, and be the free-water of 1: 1 with sal glauberi mol ratio, stir at 36 DEG C, after cooling, obtain gel salt hydrate cold storage agent.
The transformation temperature of prepared cold storage agent is 6.5 DEG C, and latent heat of phase change is 125.6J/g.
Embodiment 2
Concrete component and mass ratio are: the ammonium chloride of the sal glauberi salt hydrate of 7.5g, the borax of 0.25g, the boric acid of 0.25g, the super absorbent resin of 0.15g and the gas-phase silica of 0.1g, the Repone K of 0.85g and 0.9g, the Sodium hexametaphosphate 99 of 0.03g, and be the free-water of 1: 1 with sal glauberi mol ratio, stir at 38 DEG C, after cooling, obtain gel salt hydrate cold storage agent.
The transformation temperature of prepared cold storage agent is 5.3 DEG C, and latent heat of phase change is 121.9J/g.
Embodiment 3
Concrete component and mass ratio are: the ammonium chloride of the sal glauberi salt hydrate of 8.5g, the borax of 0.25g, the boric acid of 0.25g, the super absorbent resin of 0.15g and the gas-phase silica of 0.1g, the Repone K of 0.15g and 0.6g, the Sodium hexametaphosphate 99 of 0.05g, and be the free-water of 1: 1 with sal glauberi mol ratio, stir at 40 DEG C, after cooling, obtain gel salt hydrate cold storage agent.
The transformation temperature of prepared cold storage agent is 7.7 DEG C, and latent heat of phase change is 135.1J/g.
Claims (3)
1. a transformation temperature is the salt hydrate cold storage agent of 5 ~ 8 DEG C, it is characterized in that, the moiety of described cold storage agent is: weight percent be 68.5 ~ 86.9% main energy storage agent, weight percent be 1 ~ 3% anti-ly cross cryogen, thickening material that acid-base neutralisation agent that weight percent is 1 ~ 3%, weight percent are 1 ~ 5%, weight percent be 10 ~ 20% cooling agent, weight percent be the Crystal habit modifiers of 0.1 ~ 0.5% and the free-water with sal glauberi equimolar ratio.
2. prepare a salt hydrate cold storage agent as claimed in claim 1, it is characterized in that, described anti-cryogen is excessively borax; Described acid-base neutralisation agent is boric acid; Described thickening material is self-control environment-friendly degradable Starch Super Water Absorbent Resin and gas-phase silica; Described cooling agent is Repone K and the ammonium chloride of different ratios; Described Crystal habit modifiers is Sodium hexametaphosphate 99.
3. prepare a salt hydrate cold storage agent as claimed in claim 1, its preparation method comprises the following steps:
(1) be that the W-Gum of 5% 68.5 ~ 86.9% carries out gelatinization at 80 DEG C by concentration, be then that the acrylic acid solution of 80% mixes with acrylamide by degree of neutralization, and stir.At 80 DEG C, in the starch of gelatinization, add initiator ammonium persulfate, then add mixing solutions and linking agent N ' N-methylene-bisacrylamide, after reaction, obtain gelatin product, gelatin product shredded and dries, pulverizing and obtain Powdered salt-tolerant super absorbent polymer;
(2) by weight percent be 68.5 ~ 86.9% main energy storage agent sal glauberi, weight percent be 1 ~ 3% anti-ly cross cryogen borax, weight percent be 1 ~ 3% acid-base neutralisation agent boric acid, weight percent be 1 ~ 5% thickening material salt-tolerant super absorbent polymer and gas-phase silica, weight percent be 10 ~ 20% cooling agent Repone K and ammonium chloride, weight percent be 0.1 ~ 0.5% Crystal habit modifiers Sodium hexametaphosphate 99 and free-water stir under the constant temperature of 35 ~ 40 DEG C, cooling, obtains salt hydrate cold storage agent.
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Cited By (21)
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| CN106753256A (en) * | 2016-11-25 | 2017-05-31 | 贺迈新能源科技（上海）有限公司 | A kind of phase-change material of Bidirectional temperature-controlling, preparation method and its usage |
| CN106750036A (en) * | 2016-11-25 | 2017-05-31 | 苏州安特实业有限公司 | A kind of Lignins high hydroscopic resin gel low-temperature phase-change material |
| CN107189765A (en) * | 2017-07-06 | 2017-09-22 | 贺迈新能源科技（上海）有限公司 | A kind of deepfreeze hydrous salt phase change material and its preparation method and application |
| CN107201215A (en) * | 2017-07-06 | 2017-09-26 | 贺迈新能源科技（上海）有限公司 | A kind of low-temperature inorganic phase-changing energy storage material and preparation method thereof |
| CN107418521A (en) * | 2017-07-11 | 2017-12-01 | 江苏理工学院 | A kind of ternary phase-change material for cold storage and preparation method thereof |
| CN107739595A (en) * | 2017-08-30 | 2018-02-27 | 江苏理工学院 | A kind of inorganic phase-changing material for air conditioner cold accumulation and preparation method thereof |
| CN108300418A (en) * | 2018-01-17 | 2018-07-20 | 松冷（武汉）科技有限公司 | A kind of gel phase-change material and preparation method thereof, application process |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN109181653A (en) * | 2018-10-09 | 2019-01-11 | 北京物资学院 | Cold-storage material and application for the fresh cold chain transportation of fruits and vegetables |
| CN109251731A (en) * | 2018-08-22 | 2019-01-22 | 中国电子科技集团公司第十六研究所 | A kind of idle call cool storage material |
| CN109609101A (en) * | 2018-12-29 | 2019-04-12 | 北京华厚能源科技有限公司 | A kind of low-temperature phase-change energy-storing material and preparation method thereof |
| CN109913179A (en) * | 2019-03-20 | 2019-06-21 | 江南大学 | A kind of adjustable phase-change material for cold storage of temperature and preparation method thereof |
| CN109943291A (en) * | 2019-04-04 | 2019-06-28 | 江南大学 | A kind of high thermal conductivity selfreparing gel based phase-change material and preparation method thereof |
| CN110257020A (en) * | 2019-06-28 | 2019-09-20 | 深圳市爱能森科技有限公司 | A kind of phase-changing energy storage material and preparation method thereof with two-phase changing temperature degree |
| CN110330949A (en) * | 2019-07-29 | 2019-10-15 | 瑞祥新能源(深圳)有限责任公司 | A kind of low temperature resistant thermal conducting agent and its preparation method and application |
| CN110484215A (en) * | 2019-08-25 | 2019-11-22 | 湖南七纬科技有限公司 | A kind of cold chain cold-storage material and preparation method thereof |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
| CN111826131A (en) * | 2020-05-27 | 2020-10-27 | 纯钧新材料(深圳)有限公司 | Preparation method of high-stability composite phase-change gel for cold chain transportation of 2-8 ℃ medicines |
| CN112480871A (en) * | 2020-11-13 | 2021-03-12 | 深圳国信储能技术有限公司 | Inorganic phase-change material with phase-change temperature of 5 ℃ and preparation method thereof |
| CN114015753A (en) * | 2021-11-08 | 2022-02-08 | 绍兴市盈创医疗科技有限公司 | Virus preserving fluid and virus preserving tube for storing same |
| CN115305064A (en) * | 2022-09-16 | 2022-11-08 | 广东电网有限责任公司 | Efficient phase change energy storage material based on modified SAP and preparation method thereof |
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| CN106750036B (en) * | 2016-11-25 | 2020-02-04 | 苏州安特实业有限公司 | Lignin series super absorbent resin gel low-temperature phase change material |
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| CN107189765A (en) * | 2017-07-06 | 2017-09-22 | 贺迈新能源科技（上海）有限公司 | A kind of deepfreeze hydrous salt phase change material and its preparation method and application |
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| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108456509B (en) * | 2018-03-13 | 2020-11-06 | 青海大学 | Inorganic hydrated salt phase change energy storage material and preparation method thereof |
| CN109251731A (en) * | 2018-08-22 | 2019-01-22 | 中国电子科技集团公司第十六研究所 | A kind of idle call cool storage material |
| CN109181653A (en) * | 2018-10-09 | 2019-01-11 | 北京物资学院 | Cold-storage material and application for the fresh cold chain transportation of fruits and vegetables |
| CN109609101A (en) * | 2018-12-29 | 2019-04-12 | 北京华厚能源科技有限公司 | A kind of low-temperature phase-change energy-storing material and preparation method thereof |
| CN109913179A (en) * | 2019-03-20 | 2019-06-21 | 江南大学 | A kind of adjustable phase-change material for cold storage of temperature and preparation method thereof |
| CN109943291A (en) * | 2019-04-04 | 2019-06-28 | 江南大学 | A kind of high thermal conductivity selfreparing gel based phase-change material and preparation method thereof |
| CN110257020A (en) * | 2019-06-28 | 2019-09-20 | 深圳市爱能森科技有限公司 | A kind of phase-changing energy storage material and preparation method thereof with two-phase changing temperature degree |
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| CN110484215A (en) * | 2019-08-25 | 2019-11-22 | 湖南七纬科技有限公司 | A kind of cold chain cold-storage material and preparation method thereof |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
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| CN112480871A (en) * | 2020-11-13 | 2021-03-12 | 深圳国信储能技术有限公司 | Inorganic phase-change material with phase-change temperature of 5 ℃ and preparation method thereof |
| CN114015753A (en) * | 2021-11-08 | 2022-02-08 | 绍兴市盈创医疗科技有限公司 | Virus preserving fluid and virus preserving tube for storing same |
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