CN104726071A - Composite low-temperature coolant and preparation method and applications thereof - Google Patents
Composite low-temperature coolant and preparation method and applications thereof Download PDFInfo
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- CN104726071A CN104726071A CN201510126865.7A CN201510126865A CN104726071A CN 104726071 A CN104726071 A CN 104726071A CN 201510126865 A CN201510126865 A CN 201510126865A CN 104726071 A CN104726071 A CN 104726071A
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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
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/37—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
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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 composite low-temperature coolant which is composed of the following components in percentage by mass: 7-12% of ethylene glycol, 3-6.3% of ammonium chloride, 3-7% of sodium chloride, 4-7% of calcium chloride, 0.05-2% of guar gum, 0.1-0.5% of a citric acid, 1-3% of sodium tetraborate and the balance of water. The invention also discloses a preparation method of the composite low-temperature coolant. The invention also discloses the applications of the composite low-temperature coolant on the aspects of storage and freshness preservation. The preparation method of the composite low-temperature coolant disclosed by the invention is simple, low in cost, and suitable for mass production, and the prepared coolant is good in cool storage effect and can be used repeatedly. Experiments show that the phase transition temperature of the coolant is 34 DEG C below zero-38 DEG C below zero, and the latent heat of phase change is 310-355 kJ/kg.
Description
Technical field
The present invention relates to the preparation field of cold storage agent, specifically a kind of compound cryosar cold storage agent and its preparation method and application.
Background technology
Along with the development of society and the raising of people's living standard, everybody also improves constantly the quality requirements of fresh product and other products.Therefore, the storage and freshness-retaining technology of food just seems particularly important in Cold Chain Logistics.Along with the development of domestic Cold Chain Logistics, also progressively deeply, the research of cold storage agent is also being carried out as a focus, is absorbed or discharge the object that amount of heat reaches cold-storage by cold storage agent in phase transition process in the research of Cool Storage Technology.
Root it is documented, current low-temperature cold energy storage agent is mainly divided into: organism cold storage agent, inorganics cold storage agent.Current inorganic cold storage agent uses more, what know the most is exactly ice, ice conserve cold has certain effect, but be mainly applicable to the product of about 0 DEG C storage, just need to utilize other inorganic salt to store the more product of low temperature, the shortcoming that a lot of inorganics phase change cold accumulating agent had cold-peace to be separated in phase transition process, affects cold-storage ability.Organism phase-change material for cold storage mainly comprises fitter acids and its ester class, alcohols, arene and high molecular polymer class etc., organic-matter chemical stable performance, the shortcoming be not separated, but thermal conductivity is low, latent heat of phase change is low.
Summary of the invention
Goal of the invention: for above-mentioned defect, first technical problem to be solved by this invention there is provided a kind of compound cryosar cold storage agent.
Second technical problem to be solved by this invention there is provided the preparation method of above-mentioned compound cryosar cold storage agent.
3rd technical problem to be solved by this invention there is provided the application of above-mentioned compound cryosar cold storage agent.
Technical scheme: in order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: the invention provides a kind of compound cryosar cold storage agent, composed of the following components by mass percentage: ethylene glycol 7% ~ 12%, ammonium chloride 3% ~ 6.3%, sodium-chlor 3% ~ 7%, calcium chloride 4% ~ 7%, guar gum 0.05% ~ 2%, citric acid 0.1% ~ 0.5%, sodium tetraborate 1% ~ 3%, all the other are water.
Further, composed of the following components by mass percentage: ethylene glycol 7.5% ~ 10%, ammonium chloride 4.8% ~ 6%, sodium-chlor 4.6% ~ 5%, calcium chloride 4.75% ~ 4.8%, guar gum 1% ~ 2%, citric acid 0.3% ~ 0.5%, sodium tetraborate 1.25% ~ 1.5%, water 70.2% ~ 75.8%.。
Further, the transformation temperature of described compound cryosar cold storage agent is-34 DEG C ~-38 DEG C, and latent heat of phase change is 310-355kJ/kg.
A preparation method for compound cryosar cold storage agent, comprises the following steps:
1) ethylene glycol, ammonium chloride, sodium-chlor, calcium chloride, guar gum, citric acid, sodium tetraborate, water is prepared by described mass percent;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, after stirring, leaves standstill cooling, obtains cold storage agent.
Further, 50 DEG C ~ 60 DEG C are maintained the temperature at when stirring in described step 4).
The above-mentioned application of a kind of compound cryosar cold storage agent in keeping-freshness storage.
Beneficial effect: compared with prior art, the present invention has following characteristic and advantage: low-temperature cold energy storage agent preparation method of the present invention is simple, cost is lower, be applicable to scale operation, the cold accumulation effects of the cold storage agent prepared is good, can Reusability, prove through test, cold storage agent transformation temperature of the present invention is-34 DEG C ~-38 DEG C, and latent heat of phase change is 310-355kJ/kg.
Embodiment
Below by specific embodiment, the present invention is further described; it should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention; can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
Embodiment 1:
A preparation method for compound cryosar cold storage agent, concrete steps are as follows:
1) ethylene glycol 7.5g, ammonium chloride 5.75g, sodium-chlor 5.0g, calcium chloride 4.75g, guar gum 1g, citric acid 0.3g, sodium tetraborate 1.5g is prepared according to mass percent, water 74.2g;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, maintains the temperature at about 50 DEG C, after stirring during stirring, leave standstill cooling, obtain cold storage agent.Through test, its transformation temperature is-34.6 DEG C, and latent heat of phase change is 315 kJ/kg.
Embodiment 2:
A preparation method for compound cryosar cold storage agent, concrete steps are as follows:
1) ethylene glycol 7.5g, ammonium chloride 4.8g, sodium-chlor 4.6g, calcium chloride 4.8g, guar gum 1g, citric acid 0.3g, sodium tetraborate 1.25g is prepared according to mass percent, water 75.75g;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, maintains the temperature at about 50 DEG C, after stirring during stirring, leave standstill cooling, obtain cold storage agent.Through test, its transformation temperature is-35.3 DEG C, and latent heat of phase change is 355 kJ/kg.
Embodiment 3:
A preparation method for compound cryosar cold storage agent, concrete steps are as follows:
1) ethylene glycol 7.5g, ammonium chloride 6.3g, sodium-chlor 4.6g, calcium chloride 4.8g, guar gum 1g, citric acid 0.3g, sodium tetraborate 1.25g is prepared according to mass percent, water 74.25g;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, maintains the temperature at 50 DEG C, after stirring during stirring, leave standstill cooling, obtain cold storage agent.Through test, its transformation temperature is-36.1 DEG C, and latent heat of phase change is 335 kJ/kg.
Embodiment 4
A preparation method for compound cryosar cold storage agent, concrete steps are as follows:
1) ethylene glycol 7g, ammonium chloride 3g, sodium-chlor 3g, calcium chloride 4g, guar gum 0.05g, citric acid 0.1g, sodium tetraborate 1g is prepared according to mass percent, water 81.35g;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, maintains the temperature at 55 DEG C, after stirring during stirring, leave standstill cooling, obtain cold storage agent.Through test, its transformation temperature is-38 DEG C, and latent heat of phase change is 340 kJ/kg.
Embodiment 5
A preparation method for compound cryosar cold storage agent, concrete steps are as follows:
1) ethylene glycol 12g, ammonium chloride 6g, sodium-chlor 7g, calcium chloride 7g, guar gum 2g, citric acid 0.5g, sodium tetraborate 3g is prepared according to mass percent, water 62.5g;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, maintains the temperature at 60 DEG C, after stirring during stirring, leave standstill cooling, obtain cold storage agent.Through test, its transformation temperature is-34 DEG C, and latent heat of phase change is 310 kJ/kg.
Single inorganics cold storage agent traditional at present or single organism cold storage agent, along with strength of solution increases, its transformation temperature can reduce, but latent heat of phase change also reduces.And the transformation temperature of current low temperature phase change coolant is mostly at 0 DEG C ~-20 DEG C.Such as Yang Ying, Shen Haiying just mention in its document, and the transformation temperature of the matrix material worked out is at-16 DEG C, and latent heat of phase change is at 206kJ/kg ~ 222kJ/kg; Mention in the invention document of Bao Weiqiang, the cold storage agent of its research, transformation temperature is-5 DEG C ~-4 DEG C, and latent heat of phase change is 231kJ ~ 270kJ/kg; And cold storage agent material of the present invention, transition temperature range is at-34 DEG C ~-38 DEG C, and latent heat of phase change is 310 kJ/kg ~ 355kJ/kg, and transformation temperature is low, and latent heat of phase change is high, and the scope of application is wider.
Above are only the preferred embodiment of the invention, be not restricted to the present invention.To those of ordinary skill in the art, other multi-form change or variations can also be made on the basis of the above description.Here without the need to also illustrating all embodiments.And thus scheme the apparent change of extending out or variation be still within protection scope of the present invention.
Claims (6)
1. a compound cryosar cold storage agent, it is characterized in that, composed of the following components by mass percentage: ethylene glycol 7% ~ 12%, ammonium chloride 3% ~ 6.3%, sodium-chlor 3% ~ 7%, calcium chloride 4% ~ 7%, guar gum 0.05% ~ 2%, citric acid 0.1% ~ 0.5%, sodium tetraborate 1% ~ 3%, all the other are water.
2. a kind of compound cryosar cold storage agent according to claim 1, it is characterized in that, composed of the following components by mass percentage: ethylene glycol 7.5% ~ 10%, ammonium chloride 4.8% ~ 6%, sodium-chlor 4.6% ~ 5%, calcium chloride 4.75% ~ 4.8%, guar gum 1% ~ 2%, citric acid 0.3% ~ 0.5%, sodium tetraborate 1.25% ~ 1.5%, water 70.2% ~ 75.8%.
3. a kind of compound cryosar cold storage agent according to claim 1, is characterized in that, the transformation temperature of described compound cryosar cold storage agent is-34 DEG C ~-38 DEG C, and latent heat of phase change is 310-355kJ/kg.
4. a preparation method for compound cryosar cold storage agent, is characterized in that, comprises the following steps:
1) ethylene glycol, ammonium chloride, sodium-chlor, calcium chloride, guar gum, citric acid, sodium tetraborate, water is prepared by mass percent according to claim 1;
2) ethylene glycol, calcium chloride, water are mixedly configured into the aqueous solution;
3) mixture is obtained by fully grinding after ammonium chloride, sodium-chlor, guar gum, citric acid, sodium tetraborate mixing;
4) mixture in step 3) is added step 2) in the aqueous solution, and high-speed stirring, after stirring, leaves standstill cooling, obtains cold storage agent.
5. the preparation method of a kind of compound cryosar cold storage agent according to claim 4, is characterized in that, maintains the temperature at 50 DEG C ~ 60 DEG C when stirring in described step 4).
6. the application of a kind of compound cryosar cold storage agent according to claim 1 in keeping-freshness storage.
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Cited By (16)
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| CN105650958A (en) * | 2016-02-26 | 2016-06-08 | 宁波保税区韬鸿化工科技有限公司 | Refrigerating device |
| CN105716346A (en) * | 2016-02-26 | 2016-06-29 | 陈珏 | Refrigerant containing bag, refrigerant and refrigerating device |
| CN106753255A (en) * | 2016-11-25 | 2017-05-31 | 苏州安特实业有限公司 | A kind of phase transition temperature is 26~28 DEG C of low-temperature phase-change material |
| US20180105728A1 (en) * | 2015-06-19 | 2018-04-19 | Kaneka Corporation | Cold storage material composition, cold storage material, and transport container |
| CN108251071A (en) * | 2018-03-01 | 2018-07-06 | 合肥嘉仕诚能源科技有限公司 | A kind of cold-storage material 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 |
| CN110406800A (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 fire-proof function |
| 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 |
| 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 |
| CN110835520A (en) * | 2019-11-08 | 2020-02-25 | 上海直帆冷链技术有限公司 | Cold storage material composition at-8 ℃ and preparation method thereof |
| CN110878199A (en) * | 2018-09-06 | 2020-03-13 | 陕西久维电力工程有限公司 | Composite phase change material |
| CN111819265A (en) * | 2018-03-06 | 2020-10-23 | 株式会社钟化 | Cold storage material composition and use thereof |
| GB2595662A (en) | 2020-06-01 | 2021-12-08 | Hubbard Products Ltd | Phase change material |
| CN114058336A (en) * | 2021-11-05 | 2022-02-18 | 中煤科工集团沈阳研究院有限公司 | Cold storage agent for mine cooling clothes and preparation method thereof |
| CN114316917A (en) * | 2021-12-22 | 2022-04-12 | 苏州安特实业有限公司 | Environment-friendly non-toxic low-temperature coolant and preparation method thereof |
| CN115368621A (en) * | 2021-05-18 | 2022-11-22 | 中国科学院苏州纳米技术与纳米仿生研究所 | Aramid fiber/polydopamine aerogel film, phase-change composite film, preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20180105728A1 (en) * | 2015-06-19 | 2018-04-19 | Kaneka Corporation | Cold storage material composition, cold storage material, and transport container |
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| CN105716346A (en) * | 2016-02-26 | 2016-06-29 | 陈珏 | Refrigerant containing bag, refrigerant and refrigerating device |
| CN105650958A (en) * | 2016-02-26 | 2016-06-08 | 宁波保税区韬鸿化工科技有限公司 | Refrigerating device |
| CN106753255A (en) * | 2016-11-25 | 2017-05-31 | 苏州安特实业有限公司 | A kind of phase transition temperature is 26~28 DEG C of low-temperature phase-change material |
| CN108251071A (en) * | 2018-03-01 | 2018-07-06 | 合肥嘉仕诚能源科技有限公司 | A kind of cold-storage material and preparation method thereof |
| CN111819265A (en) * | 2018-03-06 | 2020-10-23 | 株式会社钟化 | Cold storage material composition and use thereof |
| US11326084B2 (en) | 2018-03-06 | 2022-05-10 | Kaneka Corporation | Cold storage material composition and use thereof |
| CN111819265B (en) * | 2018-03-06 | 2021-10-26 | 株式会社钟化 | Cold storage material composition and use thereof |
| CN110406800A (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 fire-proof function |
| 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 |
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| CN110878199B (en) * | 2018-09-06 | 2021-09-14 | 陕西久维电力工程有限公司 | Composite phase change material |
| 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 |
| CN110835520A (en) * | 2019-11-08 | 2020-02-25 | 上海直帆冷链技术有限公司 | Cold storage material composition at-8 ℃ and preparation method thereof |
| GB2595662A (en) | 2020-06-01 | 2021-12-08 | Hubbard Products Ltd | Phase change material |
| WO2021245404A1 (en) | 2020-06-01 | 2021-12-09 | Hubbard Products Limited | Phase change material |
| CN115368621A (en) * | 2021-05-18 | 2022-11-22 | 中国科学院苏州纳米技术与纳米仿生研究所 | Aramid fiber/polydopamine aerogel film, phase-change composite film, preparation method and application |
| CN115368621B (en) * | 2021-05-18 | 2024-03-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Aramid fiber/polydopamine aerogel film, phase change composite film, preparation method and application |
| CN114058336A (en) * | 2021-11-05 | 2022-02-18 | 中煤科工集团沈阳研究院有限公司 | Cold storage agent for mine cooling clothes and preparation method thereof |
| CN114316917A (en) * | 2021-12-22 | 2022-04-12 | 苏州安特实业有限公司 | Environment-friendly non-toxic low-temperature coolant and preparation method thereof |
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