CN114569322A - Cooling nursing bag with soft texture and long cooling time - Google Patents

Abstract

The invention discloses a cooling care bag with soft texture and long cooling time. A polymer structure with porous is prepared by polymerization reaction, and hydrophilic paint is applied on the surface of the obtained polymer pores, and then water is absorbed in the internal pores of the polymer. , a cooling care bag with soft texture and long cooling time is prepared by utilizing the soft properties of polymers and the high solid-liquid phase transition energy density of water. A cooling nursing bag with soft texture and long cooling time can be widely used in medical nursing institutions for physical cooling of fever patients, bruise elimination of bruises and sprains, and the like.

Description

A cooling care bag with soft texture and long cooling time

technical field

The invention relates to a preparation method of a cooling nursing bag with soft texture and long cooling time, belonging to the field of medical nursing equipment.

Background technique

Cooling care bag is the first choice for physical cooling and cooling physiotherapy widely used in medical and health institutions. The cooling principle of the cooling care bag mainly includes sensible heat cooling and latent heat cooling. Sensible heat cooling mainly uses the temperature change of the material to achieve cooling. The main problems are that the cooling time is short, the cooling effect is poor, and the temperature is gradually changing, so it cannot meet the physical cooling needs of medical care. Latent heat cooling is to achieve cooling by releasing the cooling energy through the phase change process after the material absorbs a certain amount of cooling. The cooling process can be stabilized at a specific temperature for a long time, and the cooling time is long.

At present, the latent heat cooling material used in the cooling care bag is mainly water, which can be cooled after being frozen in the refrigerator for a period of time. However, after freezing, the water is in a hard plate or block shape and cannot be closely combined with the patient's cooling part, especially for the body parts with curved shapes such as ankles, wrists, necks, etc., the ice cooling nursing bag has a great cooling effect. discount.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the present invention provides a method for preparing a cooling nursing bag with soft texture and long cooling time, the purpose of which is to prepare a cooling nursing bag with soft texture and long cooling time, which can closely fit the cooling part of a patient and achieve continuous and effective cooling .

Technical scheme of the present invention:

A cooling care bag with soft texture and long cooling time, including the following steps:

(1) Mix the polymer monomer or oligomer, foaming agent, foam stabilizer, catalyst, and solvent A uniformly according to a certain proportion, set the polymerization reaction conditions (50°C-100°C, 30 minutes-240 minutes), pass Polymerization to form porous polymers;

(2) The hydrophilic coating and solvent B are formed into a uniform solution, wherein the volume fraction of the hydrophilic coating is between 10% and 50%, and the porous polymer obtained in step (1) is immersed in the solution, so that The solution is completely submerged the porous polymer, and the porous polymer obtained in step (1) is dipped for 12 to 48 hours by the dipping method (vacuum dipping, pressure dipping, etc.) at room temperature, so that the porous polymer is filled with the hydrophilic coating solution;

(3) Take out the saturated porous polymer from the solution, heat the porous polymer filled with the hydrophilic coating solution to 60°C-100°C, remove the solvent in the hydrophilic coating solution by evaporation, and maintain the evaporation When the temperature is 12 hours to 36 hours, the hydrophilic coating is uniformly and stably distributed and fixed on the surface of the polymer pores, forming a hydrophilic coating polymer;

(4) immersing the hydrophilic coating polymer in deionized water for 12 hours to 48 hours, and adsorbing the deionized water on the inner pore surface of the hydrophilic coating polymer by the dipping method to obtain a cooling care bag cooling material;

(5) Put the cooling material of the cooling care bag into a food-grade silicone bag and seal it, so as to obtain a cooling care bag with a soft texture and a long cooling time, wherein the thickness of the food-grade silicone bag is 0.01mm-0.05mm, and the thickness of the cooling care bag is 0.01mm-0.05mm. The overall thickness is controlled at 0.2mm-20mm.

(6) put a cooling care bag with a soft texture and a long cooling time into a refrigerator or freezer at 0 to -20 ° C and freeze until the water therein is completely frozen (3 hours to 12 hours), then the cold storage is completed;

(7) Fix a cooling nursing bag with a soft texture and a long cooling time on the part of the patient that needs to be cooled, and use it until the patient does not need to be cooled or the surface temperature of the cooling nursing bag is equal to the room temperature, repeating the above step (6), then the cooling nursing can be realized Bag recycling.

Wherein, a cooling care bag with soft texture and long cooling time is composed of a cooling care bag main body (3) equipped with a cooling care bag cooling material and a strap 6, wherein the strap 6 is composed of a corresponding Velcro surface (4) The main body of the cooling care bag (3) is a food-grade silicone bag, the Velcro surface (4) (the hook surface) and the Velcro mother surface (the hook surface). One end of (5) is respectively fixed on opposite sides of the cooling and nursing bag main body (3).

Among them, the polymer monomers or oligomers include methyl methacrylate, ethylene glycol diacetate, ethylene glycol diacetate oligomers (relative molecular mass less than 3000), dimethyl siloxane, etc. One or more than two kinds of liquids that are polymerized to form flexible solids, and the mass ratio of polymers or oligomers is 40%-70%.

Wherein, the foaming agent includes one or more of monofluorotrichloromethane, monofluorodichloroethane, pentane, etc., and the mass ratio of the foaming agent is 0.5%-3%.

Wherein, the foam stabilizer includes one or more of alkyl betaine sulfonic acid, polyacrylic acid, fatty acid amide, fatty acid ethanolamide, N-alkyliminodiacetic acid sodium salt, etc., and the mass ratio of the foam stabilizer is 0.5%-2%.

Wherein, the catalyst includes one or more of triethylenediamine, triethanolamine, dimethylbenzylamine, tetramethylbutanediamine, etc., and the mass ratio of the catalyst is 0.5%-2%.

Wherein, solvent A includes one or more than two liquids that can be compatible with polymer monomers or oligomers such as dimethylformamide, diisopropylamine, triethylamine, and the mass ratio of solvent A is 25% -55%.

Wherein, the hydrophilic coating includes one or more of water-based epoxy, water-based polyurethane and the like.

Wherein, the solvent B includes one or more than two liquids that are compatible with the hydrophilic coating used, such as water, ethanol, ether, styrene, perchloroethylene, trichloroethylene, ethylene glycol ether and triethanolamine. .

The beneficial effect of the present invention is to prepare a porous polymer structure through a polymerization reaction, and coat the surface of the obtained polymer pores with a hydrophilic coating, and then absorb water in the internal pores of the polymer, using the soft properties of the polymer and water The high solid-liquid phase transition energy density is used to prepare a cooling care bag with a soft texture and a long cooling time. A cooling nursing bag with soft texture and long cooling time can be widely used in medical nursing institutions for physical cooling of fever patients, bruise elimination of bruises and sprains, and the like.

Description of drawings

Figure 1 is a schematic diagram of the hydrophilic coating polymer prepared in step (3).

Fig. 2 is the cooling material of the cooling care bag prepared in step (4).

Figure 3 is a schematic diagram of the appearance of a cooling care bag with a soft texture and a long cooling time.

Figure 4 is a test chart of the cooling effect of a cooling care bag with a soft texture and a long cooling time.

Among them, 1 is water, 2 is the hydrophilic coating polymer skeleton, 3 is the main body of the cooling care bag, 4 is the Velcro surface, 5 is the Velcro mother surface, and 6 is the strap.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the technical solutions and the accompanying drawings.

Example 1:

A cooling care bag with soft texture and long cooling time, including the following steps:

(1) Methyl methacrylate, monofluorotrichloromethane, alkyl betaine sulfonic acid, triethylenediamine, and dimethylformamide are in a mass ratio of 50%: 2%: 1%: 2%: 45 % uniformly mixed, and polymerized at 80°C for 90 minutes to form porous polymethyl methacrylate through polymerization;

(2) The water-based polyurethane and ethanol are formed into a uniform solution according to the volume fraction of 40%: 60%, and the porous polymethyl methacrylate obtained in step (1) is immersed in the solution, so that the solution completely submerges the porous polymethacrylate methyl methacrylate, soaking the porous polymethyl methacrylate obtained in step (1) for 24 hours by vacuum impregnation method at room temperature, so that the porous polymethyl methacrylate is filled with the aqueous polyurethane solution;

(3) Take out the saturated porous polymethyl methacrylate from the aqueous polyurethane solution, heat the porous polymethyl methacrylate filled with the aqueous polyurethane solution to 80°C, remove the ethanol of the aqueous polyurethane solution by evaporation, and When the evaporation temperature is maintained for 24 hours, the water-based polyurethane is uniformly and stably distributed and fixed on the porous surface of the porous polymethyl methacrylate, forming a water-based polyurethane coating polymethyl methacrylate;

(4) Immerse the water-based polyurethane coating polymethyl methacrylate in deionized water for 24 hours, and use the vacuum dipping method to adsorb the deionized water on the inner pore surface of the water-based polyurethane coating polymethyl methacrylate to obtain a cooling care bag cooling material;

(5) Put the cooling material of the cooling care bag into a 0.02mm food-grade silicone bag and seal it, then a cooling care bag with a soft texture and a long cooling time is obtained, wherein the overall thickness of the cooling care bag is 10mm.

(6) put a cooling care bag with soft texture and long cooling time into the refrigerator of -10 ℃ and freeze for 6 hours, then the cold storage is completed;

(7) Fix a cooling care bag with a soft texture and a long cooling time at the wrist joint, use until the surface temperature of the cooling care bag is equal to the room temperature, repeat the above step (6), then the cooling care bag can be recycled.

It can be seen from Figure 1 that the prepared water-based polyurethane coating polymethyl methacrylate has rich pore volume and a cross-linked network structure. It can be seen from Figure 2 that water molecules are evenly distributed in the water-based polyurethane coating polymethyl methacrylate. In the inner pores of methyl methacrylate, it can be seen from Figure 4 that the prepared cooling care bag is fixed on the surface of an object with a temperature of 25 °C, and the indoor temperature is controlled between 25-30 °C by an air conditioner, and the initial surface of the cooling care bag is cooled. The temperature is about 1℃. Before 110min, the surface temperature of the cooling care bag is lower than room temperature, and about 180min, the surface temperature of the cooling care bag is close to room temperature. Therefore, the prepared cooling care bag can achieve continuous and effective cooling care.

Example 2:

A cooling care bag with soft texture and long cooling time, including the following steps:

(1) Dimethicone, pentane, N-alkyliminodiacetic acid sodium salt, tetramethylbutanediamine and triethylamine are in a mass ratio of 70%: 0.5%: 0.5%: 1%: 28% uniform mixing, polymerizing at 50°C for 200 minutes, forming porous polydimethylsiloxane through polymerization;

(2) A uniform solution of water-based epoxy and diethyl ether is formed according to the volume fraction of 20%: 80%, and the porous polydimethylsiloxane obtained in step (1) is immersed in the solution, so that the solution completely submerges the porous polydimethylsiloxane. Methyl siloxane, impregnating the porous polydimethylsiloxane obtained in step (1) for 48 hours at room temperature by pressure dipping method, so that the porous polydimethylsiloxane is filled with the aqueous polyester solution;

(3) Take out the saturated porous polydimethylsiloxane from the aqueous epoxy solution, heat the porous polydimethylsiloxane filled with the aqueous epoxy solution to 100°C, and remove the aqueous epoxy by evaporation The ether of the solution and maintaining the evaporation temperature for 36 hours, the water-based epoxy is uniformly and stably distributed and fixed on the porous polydimethylsiloxane surface, forming a water-based epoxy coating porous polydimethylsiloxane;

(4) Immerse the water-based epoxy coating polydimethylsiloxane in deionized water for 36 hours, and use the pressure dipping method to adsorb the deionized water on the inner pore surface of the water-based epoxy coating polydimethylsiloxane , to obtain cooling material for cooling care bag;

(5) Put the cooling material of the cooling care bag into a 0.05mm food-grade silicone bag and seal it to obtain a cooling care bag with a soft texture and a long cooling time, wherein the overall thickness of the cooling care bag is 5mm.

(6) put a cooling care bag with a soft texture and a long cooling time into the refrigerator of -20 ℃ and freeze for 3 hours, then the cold storage is completed;

(7) Fix a cooling care bag with a soft texture and a long cooling time at the ankle joint, use until the surface temperature of the cooling care bag is equal to the room temperature, repeat the above step (6), then the cooling care bag can be recycled.

Claims (10)

1. A cooling nursing bag with soft texture and long cooling time comprises the following steps:

(1) mixing a polymer monomer or oligomer, a foaming agent, a foam stabilizer, a catalyst and a solvent A, and forming a porous polymer through a polymerization reaction;

(2) forming a uniform solution by a hydrophilic coating and a solvent B, wherein the volume fraction of the hydrophilic coating is 10-50%, soaking the porous polymer obtained in the step (1) in the solution to enable the solution to completely submerge the porous polymer, and soaking the porous polymer obtained in the step (1) for 12-48 hours at normal temperature by utilizing a soaking method (vacuum soaking, pressure soaking and the like) to enable the porous polymer to be filled with the hydrophilic coating solution;

(3) taking out the saturated porous polymer from the solution, heating the porous polymer filled with the hydrophilic coating solution to 60-100 ℃, removing the solvent in the hydrophilic coating solution in an evaporation mode, and maintaining the evaporation temperature for 12-36 hours, so that the hydrophilic coating is uniformly and stably distributed and fixed on the surfaces of polymer pores to form a hydrophilic coating polymer;

(4) soaking the hydrophilic coating polymer in deionized water for 12 to 48 hours, and adsorbing the deionized water on the surfaces of the pores in the hydrophilic coating polymer by using a soaking method to obtain a cooling material of the cooling nursing bag;

(5) and filling the cooling material of the cooling nursing bag into a food-grade silica gel bag and sealing to obtain the cooling nursing bag, wherein the thickness of the food-grade silica gel bag is 0.01mm-0.05mm, and the overall thickness of the cooling nursing bag is controlled to be 0.2mm-20 mm.

2. The cooling nursing bag according to claim 1, which comprises a cooling nursing bag body (3) filled with cooling material of the cooling nursing bag and a binding band 6, wherein the binding band 6 comprises a corresponding magic tape surface (4) (i.e. hook surface) and a corresponding magic tape female surface (5) (i.e. hair surface), the cooling nursing bag body (3) is a food grade silica gel bag, and one end of the magic tape surface (4) (i.e. hook surface) and one end of the magic tape female surface (5) are respectively fixed on two opposite sides of the cooling nursing bag body (3).

3. The cooling nursing bag of claim 1 or 2, wherein the polymer monomer or oligomer comprises one or more of methyl methacrylate, ethylene glycol diacetate oligomer (with a relative molecular mass less than 3000), dimethyl siloxane and other liquids capable of forming a flexible solid through polymerization, and the mass ratio of the polymer or oligomer is 40-70%.

4. The cooling nursing bag according to claim 1 or 2, wherein the foaming agent comprises one or more than two of fluorotrichloromethane, fluorodichloroethane, pentane and the like, and the mass ratio of the foaming agent is 0.5-3%;

the foam stabilizer comprises one or more than two of alkyl betaine sulfonic acid, polyacrylic acid, fatty amide, fatty acid ethanol amide, N-alkyl imino diacetic acid sodium salt and the like, and the mass ratio of the foam stabilizer is 0.5-2%.

5. The cooling nursing bag according to claim 1 or 2, wherein the catalyst comprises one or more of triethylene diamine, triethanolamine, dimethylbenzylamine, tetramethylbutanediamine, etc., and the mass ratio of the catalyst is 0.5-2%.

6. The cooling nursing bag according to claim 1 or 2, wherein the solvent A comprises one or more than two of dimethylformamide, diisopropylamine, triethylamine and other liquids compatible with polymer monomers or oligomers, and the mass ratio of the solvent A is 25-55%.

7. The cooling nursing bag of claim 1 or 2 wherein the hydrophilic coating comprises one or more of waterborne epoxy resin, waterborne polyurethane, and the like.

8. The cooling nursing bag of claim 1 or 2, wherein the solvent B comprises one or more of water, ethanol, ether, styrene, perchloroethylene, trichloroethylene, ethylene glycol ether and triethanolamine, which are compatible with the hydrophilic coating.

9. The cooling nursing bag according to claim 1 or 2, wherein the polymerization reaction condition of step (1) is 50 ℃ to 100 ℃ for 30 minutes to 240 minutes, and the porous polymer is formed by polymerization reaction.

10. The cooling nursing bag of claim 1, wherein the cooling nursing bag is used in the process of being

(1) Putting the cooling nursing bag into a refrigerator or a freezing chamber with the temperature of 0-20 ℃ for freezing until the water in the cooling nursing bag is completely frozen (3-12 hours), and then finishing cold storage;

(2) fixing the cooling nursing bag at the part of the patient needing cooling until the patient does not need cooling or the surface temperature of the cooling nursing bag is equal to the room temperature;

and (3) repeating the processes of the steps (1) and (2), so that the cooling nursing bag can be recycled.

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