CN113274190A - Substrate-free self-heating sheet and preparation method thereof - Google Patents
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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
- A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
- A61F7/032—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction using oxygen from the air, e.g. pocket-stoves
- A61F7/034—Flameless
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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
- A61F7/0241—Apparatus for the preparation of hot packs, hot compresses, cooling pads, e.g. heaters or refrigerators
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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
- C09K5/16—Materials undergoing chemical reactions when used
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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
- A61F2007/0098—Heating or cooling appliances for medical or therapeutic treatment of the human body ways of manufacturing heating or cooling devices for therapy
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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
- A61F2007/0203—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor
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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
- A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
- A61F7/032—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction using oxygen from the air, e.g. pocket-stoves
- A61F7/034—Flameless
- A61F2007/036—Fuels
- A61F2007/038—Carbon or charcoal, e.g. active
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Abstract
The embodiment of the invention discloses a substrate-free self-heating sheet and a preparation method thereof, belonging to the technical field of health care, wherein the substrate-free self-heating sheet comprises easily-oxidizable metal powder, carbon powder, a demulsifier, inorganic salt, water and polytetrafluoroethylene emulsion. The invention has simple process and easy operation, and solves the problems of powder leakage or bag falling caused by the powder components on the heating sheet in the prior art and the problems of soft and uncomfortable product produced by unreasonable preparation process. The invention has reasonable design and can provide the substrate-free self-heating sheet which is thin, good in elasticity, soft and comfortable for a user.
Description
Technical Field
The embodiment of the invention relates to the technical field of health care, in particular to a substrate-free self-heating sheet and a preparation method thereof.
Background
The self-heating sheets in the current market are divided into two types, one is a heating sheet prepared from powder, and the other is a heating sheet prepared from slurry with a substrate. The self-heating products such as warm patches made of powder or steam eye patches and the like have the phenomenon of powder leakage or bag falling. The preparation method of heating sheet with substrate usually is to mix the self-heating raw materials into paste material, convey the paste material to the forming device through the feeding gear or other ways, spread the substrate such as paper, film, or cloth under the forming device, enter the vacuum drying, then spray right amount of water or spread a layer of paper or cloth with high water-absorbing resin on the paste material directly, this process is relatively complicated, and the self-heating sheet is not soft enough, influence the comfort level of the products.
Therefore, it is desirable in the market to develop a heat generating sheet, which is simple in manufacturing process and soft enough to make up for the shortcomings of the existing products and the existing manufacturing processes.
Disclosure of Invention
Therefore, the embodiment of the invention provides a substrate-free self-heating sheet to solve the problems of powder leakage or bag falling caused by powder components in the heating sheet in the prior art, and soft and uncomfortable products produced due to unreasonable preparation process.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect of the present invention, a substrate-free self-heating sheet is provided, which comprises the following components:
easily oxidized metal powder, carbon powder, demulsifier, inorganic salt, water and polytetrafluoroethylene emulsion;
mixing and stirring the easily oxidized metal powder, the carbon powder, the demulsifier, the water and the polytetrafluoroethylene emulsion to form a bulk, and rolling the bulk into a flaky self-supporting sheet;
and spraying an inorganic salt solution on the surface of the self-supporting sheet to form the substrate-free self-heating sheet.
Further, the mass percentages of the components are as follows:
easily oxidized metal powder: 30 to 60 percent
Carbon powder: 6.5 to 20 percent
A demulsifier: 10 to 50 percent
Inorganic salts: 1.8 to 6 percent
Water: 15 to 35 percent
The mass ratio of the content of the polytetrafluoroethylene to the total of the easily oxidized metal powder and the carbon powder is in the range of: 1:5 to 1: 10.
Furthermore, the particle sizes of the easily oxidized metal powder and the carbon powder are 100-500 meshes.
Further, the demulsifier is a volatile alcohol solvent.
Further, the inorganic salt is sodium chloride.
Further, the mass ratio of the content of the polytetrafluoroethylene to the total of the easily oxidized metal powder and the carbon powder is in the range of: 1:6 to 1: 9.
Further, the easily-oxidized metal powder is one or more of iron powder, aluminum powder and magnesium powder.
In a second aspect of the present invention, there is provided a method of manufacturing a substrate-free self-heating sheet, comprising the steps of:
step one, putting the easily oxidized metal powder and the carbon powder into a container, and uniformly stirring to form a first mixture;
step two, adding the weighed demulsifier into the mixture I, and uniformly stirring to form a mixture II;
step three, adding the weighed polytetrafluoroethylene emulsion into the mixture II, and stirring until a dough is formed;
selecting the width of a gap of a roller press, rolling the dough-shaped object, and rolling for multiple times to form a film of the dough-shaped object to form a self-supporting sheet;
step five, standing and airing the self-supporting sheet or drying the self-supporting sheet at low temperature;
putting the weighed inorganic salt into the weighed water, and stirring until the inorganic salt is completely dissolved to form brine;
and seventhly, uniformly spraying the saline water on the self-supporting sheet to form the substrate-free self-heating sheet.
Further, the tool used for stirring in the third step is a stirrer with stirring, kneading and mixing functions.
Furthermore, the rolling times in the fourth step are 5-30 times.
The embodiment of the invention has the following advantages:
according to the heating sheet provided by the invention, all powder materials are mixed and processed into sheets, so that the phenomenon of powder leakage or bag falling cannot occur in the using process.
The invention has simple production process, does not need water-absorbing resin or paper or cloth with water-absorbing resin, and does not need to coat the pasty mixture on any substrate.
The self-heating sheet provided by the invention contains polytetrafluoroethylene emulsion, and the prepared self-heating sheet has good toughness, can be stretched into various shapes, and can be subjected to body tailoring to adapt to different products.
And fourthly, in the preparation process, the heating sheet can be extremely thin to reach dozens of microns at least by roll forming and selecting the gap width of a roll squeezer.
Fifthly, the heating sheet prepared by the invention is soft enough, and the comfort level of the product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a graph showing the relationship between heat generation temperature and heat generation time provided in example 1 of the present invention;
FIG. 2 is a graph showing the relationship between the heat generation temperature and the heat generation time according to example 2 of the present invention;
FIG. 3 is a graph showing the relationship between the heat generation temperature and the heat generation time according to embodiment 3 of the present invention;
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
The substrate-free self-heating sheet provided by the embodiment of the invention comprises easily-oxidized metal powder, carbon powder, a demulsifier, inorganic salt, water and polytetrafluoroethylene emulsion.
The easily oxidized metal powder and the carbon powder are uniformly mixed, and a volatile alcohol solvent is used as a wetting agent and added into the mixture to form uniform suspension of the metal powder and the carbon powder. The easily-oxidizable metal powder and the carbon powder are uniformly distributed in the polytetrafluoroethylene emulsion, the demulsifier can emulsify the polytetrafluoroethylene, the polytetrafluoroethylene is stirred and kneaded to form a dough-like substance, the dough-like substance is rolled to form a film body, and after a solution formed by water and inorganic salt is contacted with the film body, the easily-oxidizable metal powder in the film body and oxygen in the air are subjected to chemical reaction under the action of salt water.
What needs to be said in the above description is: fully mixing ethanol, iron powder and carbon powder, then mixing the mixture with polytetrafluoroethylene emulsion, and demulsifying the polytetrafluoroethylene emulsion under the action of the ethanol to form micelles among the polytetrafluoroethylene emulsion, the iron powder and the carbon powder, wherein the micelles and the micelles are mutually bonded to form a layered structure, and when the ethanol is volatilized, the polytetrafluoroethylene can shrink and form holes to a certain extent to form the self-supporting sheet with the amorphous porous reticular structure.
According to a specific embodiment provided by the invention, the weight percentages of the components are as follows:
easily oxidized metal powder: 30 to 60 percent
Carbon powder: 6.5 to 20 percent
A demulsifier: 10 to 50 percent
Inorganic salts: 1.8 to 6 percent
Water: 15 to 35 percent
The mass ratio of the content of the polytetrafluoroethylene to the total of the easily oxidized metal powder and the carbon powder is in the range of: 1:5 to 1: 10.
According to a specific embodiment provided by the invention, the particle sizes of the easily oxidized metal powder and the carbon powder are 100-500 meshes. The particle size in the range can ensure that the easily oxidized metal powder and the carbon powder are uniformly distributed in the membrane body generated by the polytetrafluoroethylene, and can also ensure that the easily oxidized metal powder and the carbon powder have enough contact area with oxygen in the air, thereby generating effective chemical reaction and generating enough heat.
According to a specific embodiment provided by the invention, the demulsifier is a volatile alcohol solvent. Preferably, ethanol is a common organic solvent, is widely applied to various aspects such as medicines, coatings, sanitary products, cosmetics, grease and the like, has relatively stable chemical properties, has less harm to human bodies compared with other organic solvents, is easy to obtain, and is beneficial to production, popularization and use of products.
According to a particular embodiment of the present invention, the inorganic salt is sodium chloride. The sodium chloride is a common chemical catalyst, has low price and easy acquisition, and is beneficial to the production and popularization of products.
According to a specific embodiment provided by the invention, the mass ratio of the content of the polytetrafluoroethylene to the total of the oxidizable metal powder and the carbon powder is in the range of: 1:6 to 1: 9. The film body formed by the polytetrafluoroethylene with the mass ratio has good flexibility.
According to a specific embodiment provided by the invention, the easily-oxidizable metal powder is one or more of iron powder, aluminum powder and magnesium powder. The iron powder, the aluminum powder or the magnesium powder is a commonly used substance in production, is easy to obtain and is beneficial to popularization and use of the produced product.
In a second aspect of the present invention, there is provided a method of manufacturing a substrate-less self-heating sheet, comprising the steps of:
step one, putting the easily oxidized metal powder and the carbon powder into a container, and uniformly stirring to form a first mixture;
step two, adding the weighed demulsifier into the mixture I, and uniformly stirring to form a mixture II;
step three, adding the weighed polytetrafluoroethylene emulsion into the mixture II, and stirring until a dough is formed;
selecting the width of a gap of a roller press, rolling the dough-shaped object, and rolling for multiple times to form a film of the dough-shaped object to form a self-supporting sheet;
step five, standing and airing the self-supporting sheet or drying the self-supporting sheet at low temperature;
putting the weighed inorganic salt into the weighed water, and stirring until the inorganic salt is completely dissolved to form brine;
and seventhly, uniformly spraying the saline water on the self-supporting sheet to form the substrate-free self-heating sheet.
In the invention, the easily oxidized metal powder is mixed with the carbon powder, and under the stirring action, the easily oxidized metal powder can be effectively prevented from caking due to the adsorption action of the carbon powder, so that a uniform mixture I is formed. And adding a demulsifier into the first mixture, stirring, and preparing the first mixture into a suspension, wherein the demulsifier submerges the first mixture, so that the emulsification effect of the demulsifier on the first mixture can be ensured, and the first mixture can be effectively isolated from oxygen in the air. In the invention, after the polytetrafluoroethylene emulsion is added into a suspension prepared from metal powder and carbon powder, the metal powder and the carbon powder are uniformly distributed in the polytetrafluoroethylene emulsion by stirring and kneading. And after standing and airing or low-temperature drying, the demulsifier in the self-supporting sheet volatilizes. The oxidizable metal powder on the self-supporting sheet is catalyzed by inorganic salt and water to chemically react with oxygen in the air, so that heat is released.
According to a specific embodiment provided by the present invention, the tool used for stirring in step three is a stirrer with stirring, kneading and mixing functions. The stirrer has the stirring function and the kneading function, so that the easily oxidized metal powder can be uniformly distributed in the bulk formed by the polytetrafluoroethylene, and the uniformity and stability of heat generated by the chemical reaction of the easily oxidized metal powder and oxygen in the air in each part in the next step can be ensured.
According to an embodiment of the present invention, the number of rolling in the fourth step is 5 to 30. And rolling for 5-30 times to enable the thickness of the produced film to be uniform, and the performance of each part of the film body to be consistent.
The invention will be further described with reference to specific embodiments and the accompanying drawings.
Example 1
The composition of each component is as follows: 50g of iron powder; 10g of carbon powder; 40g of ethanol; 12.5g of polytetrafluoroethylene emulsion; 3g of sodium chloride; 25g of water.
The preparation process comprises the following steps:
firstly, 50g of iron powder and 10g of carbon powder are weighed and placed into a beaker to be stirred for 5 minutes to form a uniform mixture of the iron powder and the carbon powder.
And secondly, slowly dripping 40g of ethanol solution into the beaker until the ethanol solution just submerges the powder in the beaker, and slowly stirring the mixed solution in the beaker for 15 minutes to form a uniform mixture of carbon powder, iron powder and ethanol.
And thirdly, adding 12.5g of polytetrafluoroethylene emulsion with the solid content of 60% into the beaker, and stirring the mixture into a dough by a dough mixer.
And fourthly, regulating the rotating speed of the roller press to a medium speed, regulating the width of a roller gap to 200 microns, putting the rolling into the mass for rolling, rolling for 20 times after 5 minutes, rolling the mass into a film, stopping rolling, and removing the film to form the self-supporting sheet.
Fifthly, standing and airing the self-supporting sheet.
Sixthly, 3g of sodium chloride is weighed and added into 25g of water to be stirred until the sodium chloride is completely dissolved, so as to form a sodium chloride solution.
And seventhly, uniformly spraying the sodium chloride solution on a self-supporting sheet to form the substrate-free self-heating sheet.
Eighthly, cutting the substrate-free self-heating sheet into 4.5cm by 4.5cm, putting the substrate-free self-heating sheet into a 6cm by 6cm breathable film, preparing a small bag, and inspecting the heating effect of the small bag, wherein the relationship between the heating effect and the heating time is shown in figure 1.
Example 2
The composition of each component is as follows: 53g of iron powder; 12g of carbon powder; 35g of ethanol; 14g of polytetrafluoroethylene emulsion; 3g of sodium chloride; 25g of water.
The preparation process comprises the following steps:
firstly, 53g of iron powder and 12g of carbon powder are weighed and placed into a beaker to be stirred for 5 minutes to form a uniform mixture of the iron powder and the carbon powder.
And secondly, slowly dripping 35g of ethanol solution into the beaker until the ethanol solution just submerges the powder in the beaker, and slowly stirring the mixed solution in the beaker for 15 minutes to form a uniform mixture of carbon powder, iron powder and ethanol.
And thirdly, adding 14g of polytetrafluoroethylene emulsion with the solid content of 60% into the beaker, and stirring the mixture into a dough by a dough mixer.
And fourthly, regulating the rotating speed of the roller press to a medium speed, regulating the width of a roller gap to 150 microns, putting the rolling into the dough for rolling, after 5 minutes of rolling, rolling the dough into a film, stopping rolling, and removing the film to form the self-supporting sheet.
And fifthly, drying the self-supporting sheet at low temperature.
Sixthly, 3g of sodium chloride is weighed and added into 25g of water to be stirred until the sodium chloride is completely dissolved, so as to form a sodium chloride solution.
And seventhly, uniformly spraying the sodium chloride solution on a self-supporting sheet to form the substrate-free self-heating sheet.
Eighthly, cutting the substrate-free self-heating sheet into 4.5cm by 4.5cm, putting the substrate-free self-heating sheet into a 6cm by 6cm breathable film, preparing a small bag, and inspecting the heating effect of the small bag, wherein the relationship between the heating effect and the heating time is shown in figure 2.
Example 3
The composition of each component is as follows: 53g of iron powder; 12g of carbon powder; 38g of ethanol; 14g of polytetrafluoroethylene emulsion; 4g of sodium chloride; 25g of water.
The preparation process comprises the following steps:
firstly, 53g of iron powder and 12g of carbon powder are weighed and placed into a beaker to be stirred for 5 minutes to form a uniform mixture of the iron powder and the carbon powder.
And secondly, slowly dripping 38g of ethanol solution into the beaker until the ethanol solution just submerges the powder in the beaker, and slowly stirring the mixed solution in the beaker for 15 minutes to form a uniform mixture of carbon powder, iron powder and ethanol.
And thirdly, adding 14g of polytetrafluoroethylene emulsion with the solid content of 60% into the beaker, and stirring the mixture into a dough by a dough mixer.
And fourthly, regulating the rotating speed of the roller press to a medium speed, regulating the width of a roller gap to be 100 microns, putting the rolling into the dough for rolling, after 5 minutes of rolling, rolling the dough into a film, stopping rolling, and removing the film to form the self-supporting sheet.
And fifthly, drying the self-supporting sheet at low temperature.
Sixthly, 4g of sodium chloride is weighed and added into 25g of water to be stirred until the sodium chloride is completely dissolved, so that a sodium chloride solution is formed.
And seventhly, uniformly spraying the sodium chloride solution on a self-supporting sheet to form the substrate-free self-heating sheet.
Eighthly, cutting the substrate-free self-heating sheet into 4.5cm by 4.5cm, putting the substrate-free self-heating sheet into a 6cm by 6cm breathable film, preparing a small bag, and inspecting the heating effect of the small bag, wherein the relationship between the heating effect and the heating time is shown in figure 3.
In the above embodiment, taking example 1 as an example, the calculation method of the mass ratio of the content of the polytetrafluoroethylene to the total mass of the easily-oxidizable metal powder and the carbon powder is as follows:
the total mass of the oxidizable metal powder and the carbon powder is 50+10=60 g
Content of polytetrafluoroethylene: 12.5 × 60% =7.5 g
Therefore, the mass ratio of the content of the polytetrafluoroethylene to the total of the easily oxidized metal powder and the carbon powder is as follows: 7.5:60=1: 8.
The application process of the embodiment of the invention is as follows:
and correspondingly packaging the formed substrate-free self-heating sheet according to different product requirements, and packaging by using an oxygen-isolating plastic packaging bag to form corresponding products, such as a steam eye mask, a self-heating knee patch, a self-heating waist patch and the like. When the base-free self-heating sheet is used, the plastic packaging bag is opened, the base-free self-heating sheet contacts air, the easily-oxidizable metal powder and oxygen in the air are subjected to oxidation reaction under the action of water and inorganic salt, heat is released, and the warm health-care effect can be achieved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A substrate-free self-heating sheet is characterized by comprising the following components:
easily oxidized metal powder, carbon powder, demulsifier, inorganic salt, water and polytetrafluoroethylene emulsion;
mixing and stirring the easily oxidized metal powder, the carbon powder, the demulsifier, the water and the polytetrafluoroethylene emulsion to form a bulk, and rolling the bulk into a flaky self-supporting sheet;
and spraying an inorganic salt solution on the surface of the self-supporting sheet to form the substrate-free self-heating sheet.
2. The substrate-free self-heating sheet according to claim 1, wherein the components are, by mass:
easily oxidized metal powder: 30 to 60 percent
Carbon powder: 6.5 to 20 percent
A demulsifier: 10 to 50 percent
Inorganic salts: 1.8 to 6 percent
Water: 15 to 35 percent
The mass ratio of the content of the polytetrafluoroethylene to the total of the easily oxidized metal powder and the carbon powder is in the range of: 1:5 to 1: 10.
3. The substrate-free self-heating sheet according to claim 1, wherein the particle sizes of the oxidizable metal powder and the carbon powder are 100-500 meshes.
4. The substrate-free self-heating sheet according to claim 1, wherein the demulsifier is a volatile alcohol solvent.
5. The substrate-free self-heating sheet according to claim 1, wherein the inorganic salt is sodium chloride.
6. A substrate-free self-heating sheet as claimed in claim 1 or 2, wherein the mass ratio of the content of the polytetrafluoroethylene to the total of the oxidizable metal powder and the carbon powder is in the range of: 1:6 to 1: 9.
7. The substrate-free self-heating sheet according to claim 1, wherein the oxidizable metal powder is one or more of iron powder, aluminum powder and magnesium powder.
8. A method for producing the substrate-less self-heating sheet according to claim 1, comprising the steps of:
step one, putting the easily oxidized metal powder and the carbon powder into a container, and uniformly stirring to form a first mixture;
step two, adding the weighed demulsifier into the mixture I, and uniformly stirring to form a mixture II;
step three, adding the weighed polytetrafluoroethylene into the mixture II, and stirring until a conglobation is formed;
selecting the width of a gap of a roller press, rolling the dough-shaped object, and rolling for multiple times to form a film of the dough-shaped object to form a self-supporting sheet;
step five, standing and airing the self-supporting sheet or drying the self-supporting sheet at low temperature;
putting the weighed inorganic salt into the weighed water, and stirring until the inorganic salt is completely dissolved to form brine;
and seventhly, uniformly spraying the saline water on the self-supporting sheet to form the substrate-free self-heating sheet.
9. A process according to claim 8, wherein the stirring tool used in step three is a stirrer having stirring, kneading and kneading functions.
10. The method according to claim 8, wherein the number of rolling in the fourth step is 5 to 30.
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29719907U1 (en) * | 1997-11-08 | 1999-04-01 | Zentralwaescherei Basel Adrett | Thermal blanket |
| CN1478445A (en) * | 2003-06-04 | 2004-03-03 | 天津康乐产业有限公司 | Heat-generating bag |
| CN1700896A (en) * | 2003-08-11 | 2005-11-23 | 麦考尔制造株式会社 | Heating element |
| CN101108150A (en) * | 2007-08-16 | 2008-01-23 | 信阳核工业恒达实业公司干燥剂厂 | Spontaneous heating thermal bag and method of manufacturing the same |
| CN101142149A (en) * | 2005-03-18 | 2008-03-12 | 金文申有限公司 | Process for the preparation of porous sintered metal materials |
| CN101547667A (en) * | 2006-12-15 | 2009-09-30 | 金伯利-克拉克环球有限公司 | Self warming mask |
| CN102977861A (en) * | 2012-11-12 | 2013-03-20 | 无锡尚瑞德医疗器械有限公司 | Self-heating hot compress material composition, self-heating hot bag, and preparation method thereof |
| CN103965840A (en) * | 2014-04-24 | 2014-08-06 | 深圳基原投资有限公司 | Self-heating patch |
| CN104127280A (en) * | 2014-08-06 | 2014-11-05 | 陈蕾 | Spontaneous-heating thermal insulation eye mask |
| CN106420156A (en) * | 2016-10-21 | 2017-02-22 | 广州市科能化妆品科研有限公司 | Self-heating paster |
| CN206612876U (en) * | 2016-10-21 | 2017-11-07 | 广州市科能化妆品科研有限公司 | A kind of spontaneous thermosticking film |
| CN109135145A (en) * | 2018-08-20 | 2019-01-04 | 上海暖友实业有限公司 | It is a kind of using mixing polysaccharide glue as thin slice spontaneous heating body of thickener and preparation method thereof |
| CN109620522A (en) * | 2018-10-22 | 2019-04-16 | 清华大学 | A kind of spontaneous hotting mask of paper-like and preparation method thereof |
| CN209137090U (en) * | 2018-04-19 | 2019-07-23 | 葛纪宏 | A kind of medical function dressing of included interior raw pulling force, stress |
| CN110338966A (en) * | 2019-06-27 | 2019-10-18 | 苏州市蓝博温医疗科技有限公司 | A kind of spontaneous backing of steam type hot compress and its preparation method and application |
| CN111568640A (en) * | 2020-05-28 | 2020-08-25 | 刘子琛 | Novel self-heating eye patch and preparation process thereof |
| CN111728882A (en) * | 2020-07-27 | 2020-10-02 | 长沙蓝姿生物科技有限公司 | Long-acting eye repairing film |
-
2021
- 2021-07-23 CN CN202110833864.1A patent/CN113274190B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29719907U1 (en) * | 1997-11-08 | 1999-04-01 | Zentralwaescherei Basel Adrett | Thermal blanket |
| CN1478445A (en) * | 2003-06-04 | 2004-03-03 | 天津康乐产业有限公司 | Heat-generating bag |
| CN1700896A (en) * | 2003-08-11 | 2005-11-23 | 麦考尔制造株式会社 | Heating element |
| CN101142149A (en) * | 2005-03-18 | 2008-03-12 | 金文申有限公司 | Process for the preparation of porous sintered metal materials |
| CN101547667A (en) * | 2006-12-15 | 2009-09-30 | 金伯利-克拉克环球有限公司 | Self warming mask |
| CN101108150A (en) * | 2007-08-16 | 2008-01-23 | 信阳核工业恒达实业公司干燥剂厂 | Spontaneous heating thermal bag and method of manufacturing the same |
| CN102977861A (en) * | 2012-11-12 | 2013-03-20 | 无锡尚瑞德医疗器械有限公司 | Self-heating hot compress material composition, self-heating hot bag, and preparation method thereof |
| CN103965840A (en) * | 2014-04-24 | 2014-08-06 | 深圳基原投资有限公司 | Self-heating patch |
| CN104127280A (en) * | 2014-08-06 | 2014-11-05 | 陈蕾 | Spontaneous-heating thermal insulation eye mask |
| CN106420156A (en) * | 2016-10-21 | 2017-02-22 | 广州市科能化妆品科研有限公司 | Self-heating paster |
| CN206612876U (en) * | 2016-10-21 | 2017-11-07 | 广州市科能化妆品科研有限公司 | A kind of spontaneous thermosticking film |
| CN209137090U (en) * | 2018-04-19 | 2019-07-23 | 葛纪宏 | A kind of medical function dressing of included interior raw pulling force, stress |
| CN109135145A (en) * | 2018-08-20 | 2019-01-04 | 上海暖友实业有限公司 | It is a kind of using mixing polysaccharide glue as thin slice spontaneous heating body of thickener and preparation method thereof |
| CN109620522A (en) * | 2018-10-22 | 2019-04-16 | 清华大学 | A kind of spontaneous hotting mask of paper-like and preparation method thereof |
| CN110338966A (en) * | 2019-06-27 | 2019-10-18 | 苏州市蓝博温医疗科技有限公司 | A kind of spontaneous backing of steam type hot compress and its preparation method and application |
| CN111568640A (en) * | 2020-05-28 | 2020-08-25 | 刘子琛 | Novel self-heating eye patch and preparation process thereof |
| CN111728882A (en) * | 2020-07-27 | 2020-10-02 | 长沙蓝姿生物科技有限公司 | Long-acting eye repairing film |
Non-Patent Citations (1)
| Title |
|---|
| 张治安，杨邦朝，邓梅根，胡永达: "氧化锰电极的微结构与电容行为研究", 《2004年材料科学与工程新进会议论文集》 * |
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| CN113274190B (en) | 2021-12-07 |
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