CN112011313A - Chemical refrigerant and its application and product - Google Patents
Chemical refrigerant and its application and product Download PDFInfo
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- CN112011313A CN112011313A CN202010944677.6A CN202010944677A CN112011313A CN 112011313 A CN112011313 A CN 112011313A CN 202010944677 A CN202010944677 A CN 202010944677A CN 112011313 A CN112011313 A CN 112011313A
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- water
- urea
- ammonium chloride
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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Abstract
The invention discloses a chemical refrigerant and application and a product thereof. Ammonium chloride and urea are used as reactants, and when water is added into the ammonium chloride and the urea, the ammonium chloride and the urea react immediately to ensure that the temperature can be reduced to 0 ℃ in about 30s, the lowest temperature can reach-8 ℃ in about 100s, and the temperature gradually rises to about 10 ℃ in 1-2 hours, so that the cooling and low-temperature maintaining effects are very ideal, and the method is particularly suitable for medical cooling. The reactant is filled in the outer layer bag, water is filled in the inner layer bag, the outer layer bag is held by force when the refrigerator is used, the inner layer bag is extruded and broken, and the dissolving reactant and the refrigerating reactant are combined to generate dissolving endothermic reaction, so that the aim of refrigerating is fulfilled, and the refrigerator is simple and convenient to use. The present invention has high heat absorption, no explosion danger, small refrigerating temperature fluctuation range, long refrigerating time and low material cost.
Description
Technical Field
The invention relates to the technical field of medical products, in particular to a chemical refrigerant and application and a product thereof.
Background
At present, in the fields of medical treatment, scientific experiments, travel, outdoor heatstroke prevention, food preservation and the like, gel or water is arranged in most of refrigerating bags, when the refrigerating bags are used, the whole refrigerating bag needs to be placed in a refrigerator for refrigeration, so that the gel or water in the refrigerating bags is cooled to achieve the refrigerating effect, the efficiency is low, and the refrigerating bags are not convenient to carry and store. The chemical refrigerant and its refrigerating bag have good refrigerating effect and can be used at any time, and its refrigerating principle is that the refrigerating reactant and dissolving reactant are mixed to produce dissolving endothermic reaction to refrigerate. In patent CN 202235884U and other related reports, ammonium nitrate, sodium nitrate, potassium nitrate and ammonium bisulfate are used as refrigerating reactants, and sodium carbonate decahydrate and sodium sulfate decahydrate are used as dissolving reactants. However, nitrate is flammable and explosive, ammonium bisulfate is corrosive, and sodium carbonate and sodium sulfate have low melting points and are easily melted and fail in a high-temperature environment in summer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a chemical refrigerant and application and a product thereof, which have ideal cooling effect, high safety, simple and convenient use and low cost and overcome the defects of the prior refrigerant.
In order to achieve the purpose, the invention is realized by the following technical scheme: the chemical refrigerant comprises 0.5-2 parts of ammonium chloride, 1.5-4.5 parts of urea and 2-8 parts of water by weight, and the ammonium chloride and the urea are used as solid reactants and are independently packaged with the water, so that the ammonium chloride and the urea are not contacted with the water.
Comprises 1 part of ammonium chloride, 2 parts of urea and 3 parts of water.
The chemical refrigerant is applied to the preparation of the medical cooling patch.
The medical cooling patch prepared from the chemical refrigerant comprises a packaging bag, wherein an inner bag is arranged in the packaging bag, the packaging bag is filled with the ammonium chloride and the urea in parts by mass, and water is filled in the inner bag.
Advantageous effects
Compared with the prior art, the invention has the advantages that: ammonium chloride and urea are used as reactants, and when water is added into the ammonium chloride and the urea, the ammonium chloride and the urea react immediately to ensure that the temperature can be reduced to 0 ℃ in about 30s, the lowest temperature can reach-8 ℃ in about 100s, and the temperature gradually rises to about 10 ℃ in 1-2 hours, so that the cooling and low-temperature maintaining effects are very ideal, and the method is particularly suitable for medical cooling. The reactant is filled in the outer layer bag, water is filled in the inner layer bag, the outer layer bag is held by force when the refrigerator is used, the inner layer bag is extruded and broken, and the dissolving reactant and the refrigerating reactant are combined to generate dissolving endothermic reaction, so that the aim of refrigerating is fulfilled, and the refrigerator is simple and convenient to use. The present invention has high heat absorption, no explosion danger, small refrigerating temperature fluctuation range, long refrigerating time and low material cost. Meanwhile, the invention adopts a bag-in-bag structure, so that the air can be prevented from contacting with the urea or the ammonium chloride, the refrigeration effect is prevented from being affected by the moisture of the refrigeration reactant, and the manufacturing, the transportation and the storage are convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 of the invention: a chemical refrigerant comprising 50g of ammonium chloride, 100g of urea and 150g of water, wherein before use, the ammonium chloride and the urea are independently packaged with the water as solid reactants, so that the ammonium chloride and the urea are not in contact with the water. The medical cooling patch is prepared, and the medical cooling patch structurally comprises a packaging bag 1, wherein the packaging bag 1 is filled with ammonium chloride and urea with the mass, the total amount of water is filled into an inner bag 2, and the inner bag 2 is fixed in the packaging bag 1 by reactants in the packaging bag 1. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant in example 1 was used at an ambient temperature of 17 ℃ with the temperature decreasing to 0 ℃ in about 30 seconds, the lowest temperature of-10 ℃ in about 100 seconds, and gradually increasing to 10 ℃ in about 100 minutes, and the effect was satisfactory.
Example 2 of the invention: a chemical refrigerant comprising 25g ammonium chloride, 50g urea and 100g water, wherein before use, the ammonium chloride and urea are packaged separately as solid reactants with water so that the ammonium chloride and urea do not contact with water. The medical cooling patch is prepared, and the medical cooling patch structurally comprises a packaging bag 1, wherein the packaging bag 1 is filled with ammonium chloride and urea with the mass, the total amount of water is filled into an inner bag 2, and the inner bag 2 is fixed in the packaging bag 1 by reactants in the packaging bag 1. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant in example 2 was used at an ambient temperature of 17 c, and the temperature was decreased to 0 c in about 30 seconds, reached the lowest temperature of-9.5 c in about 100 seconds, and gradually increased to 10 c in about 80 minutes, which is ideal in use effect.
Example 3 of the invention: a chemical refrigerant comprising 50g of ammonium chloride, 100g of urea and 100g of water, wherein before use, the ammonium chloride and the urea are independently packaged with the water as solid reactants, so that the ammonium chloride and the urea are not in contact with the water. The medical cooling patch is prepared, and the medical cooling patch structurally comprises a packaging bag 1, wherein the packaging bag 1 is filled with ammonium chloride and urea with the mass, the total amount of water is filled into an inner bag 2, and the inner bag 2 is fixed in the packaging bag 1 by reactants in the packaging bag 1. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant in example 3 was used at an ambient temperature of 22 c, and the temperature was decreased to 0 c in about 30 seconds, to the lowest temperature of-7 c in about 90 seconds, and gradually increased to 10 c in about 60 minutes, which is ideal in use effect.
Example 4 of the invention: a chemical refrigerant comprising 25g ammonium chloride, 50g urea and 100g water, wherein before use, the ammonium chloride and urea are packaged separately as solid reactants with water so that the ammonium chloride and urea do not contact with water. The medical cooling patch is prepared, and the medical cooling patch structurally comprises a packaging bag 1, wherein the packaging bag 1 is filled with ammonium chloride and urea with the mass, the total amount of water is filled into an inner bag 2, and the inner bag 2 is fixed in the packaging bag 1 by reactants in the packaging bag 1. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant in example 4 was used at an ambient temperature of 22 c, and the temperature was decreased to 0 c in about 30 seconds, reached the lowest temperature of-5 c in about 90 seconds, and gradually increased to 10 c in about 45 minutes, which is ideal in use effect.
Comparative example 1: a chemical refrigerant comprising 50g of ammonium chloride and 100g of water, wherein the ammonium chloride and the water are packaged separately before use so that the ammonium chloride does not come into contact with the water. And is prepared into medical cooling paste according to the structure of the claim. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant of comparative example 1 was used at an ambient temperature of 17 c, and its temperature was decreased to 0 c in about 60 seconds, reached the lowest temperature of-2 c in about 142 seconds, and gradually increased to 10 c in about 60 minutes, and its cooling rate, lowest temperature, and low-temperature retention time were all insufficient.
Comparative example 2: a chemical refrigerant comprising 100g of urea and 100g of water, the urea and water being packaged separately before use so that the urea does not come into contact with the water. And is prepared into medical cooling paste according to the structure of the claim. When the heat-insulation bag is used, the packaging bag 1 is pressed forcibly, the granular reactant breaks the inner bag 2, and the reactant is contacted with water to generate endothermic reaction. The refrigerant of comparative example 2 was used at an ambient temperature of 17 c, and its temperature was decreased to 0 c in about 30s, reached the lowest temperature of-6 c in about 110s, and gradually increased to 10 c in about 78 minutes, and its cooling rate, lowest temperature, and low temperature retention time were improved as compared with comparative example 1, but it was still insufficient as compared with the present application.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A chemical refrigerant, characterized by: the water-based cleaning agent comprises, by mass, 0.5-2 parts of ammonium chloride, 1.5-4.5 parts of urea and 2-8 parts of water, wherein before use, the ammonium chloride and the urea are independently packaged with the water as solid reactants, so that the ammonium chloride and the urea are not in contact with the water.
2. The chemical refrigerant according to claim 1, wherein: comprises 1 part of ammonium chloride, 2 parts of urea and 3 parts of water.
3. Use of a chemical refrigerant according to claim 1 or 2 in the manufacture of a medical cooling patch.
4. A medical cooling patch prepared by using the chemical refrigerant according to claim 1 or 2, comprising a packaging bag (1), characterized in that: an inner bag (2) is arranged in the packaging bag (1), the packaging bag (1) is filled with the ammonium chloride and the urea in parts by mass, and the inner bag (2) is filled with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944677.6A CN112011313A (en) | 2020-09-10 | 2020-09-10 | Chemical refrigerant and its application and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944677.6A CN112011313A (en) | 2020-09-10 | 2020-09-10 | Chemical refrigerant and its application and product |
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| Publication Number | Publication Date |
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| CN112011313A true CN112011313A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010944677.6A Pending CN112011313A (en) | 2020-09-10 | 2020-09-10 | Chemical refrigerant and its application and product |
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| Country | Link |
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| CN (1) | CN112011313A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018681A (en) * | 2021-10-28 | 2022-02-08 | 上海交通大学医学院附属第九人民医院 | Intraoperative frozen specimen conveying carrier paper |
| CN114343960A (en) * | 2022-01-05 | 2022-04-15 | 湖北拓盈新材料有限公司 | Self-refrigerating cool patch and application thereof |
Citations (4)
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|---|---|---|---|---|
| CN104224432A (en) * | 2013-06-14 | 2014-12-24 | 拉彼德援助股份公司 | Method of manufacturing disposable cold pack and related disposable cold pack containing urea and ammonium chloride |
| CN104816880A (en) * | 2015-03-17 | 2015-08-05 | 江苏易舜医疗器械有限公司 | Novel disposable ice bag and manufacturing method |
| CN105395313A (en) * | 2015-10-30 | 2016-03-16 | 珠海市雅莎生物科技有限公司 | Manufacturing method of ultralow-temperature instantaneous cooling ice bag |
| CN106880439A (en) * | 2017-03-30 | 2017-06-23 | 袁嘉陵 | A kind of cold-compress ice bag |
-
2020
- 2020-09-10 CN CN202010944677.6A patent/CN112011313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104224432A (en) * | 2013-06-14 | 2014-12-24 | 拉彼德援助股份公司 | Method of manufacturing disposable cold pack and related disposable cold pack containing urea and ammonium chloride |
| CN104816880A (en) * | 2015-03-17 | 2015-08-05 | 江苏易舜医疗器械有限公司 | Novel disposable ice bag and manufacturing method |
| CN105395313A (en) * | 2015-10-30 | 2016-03-16 | 珠海市雅莎生物科技有限公司 | Manufacturing method of ultralow-temperature instantaneous cooling ice bag |
| CN106880439A (en) * | 2017-03-30 | 2017-06-23 | 袁嘉陵 | A kind of cold-compress ice bag |
Non-Patent Citations (1)
| Title |
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| 王玲: "《儿童重症护理与操作技术》", 31 December 2017, 河南科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018681A (en) * | 2021-10-28 | 2022-02-08 | 上海交通大学医学院附属第九人民医院 | Intraoperative frozen specimen conveying carrier paper |
| CN114343960A (en) * | 2022-01-05 | 2022-04-15 | 湖北拓盈新材料有限公司 | Self-refrigerating cool patch and application thereof |
| CN114343960B (en) * | 2022-01-05 | 2023-12-26 | 湖北拓盈新材料有限公司 | Self-cooling type cool patch and application thereof |
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