Phase-change temperature-control cold compress mask and preparation method thereof

Abstract

The invention discloses a phase-change temperature-control cold compress mask and a preparation method thereof, and the preparation method comprises the following steps: step 1, mixing and preparing AB silica gel, uniformly stirring, and carrying out vacuum defoaming; 2, mixing the phase change microcapsules with AB silica gel, and stirring to obtain mixed slurry; step 3, performing ultrasonic cleaning on a polytetrafluoroethylene template in the shape of a mask, washing with deionized water, then naturally airing, then coating the mixed slurry obtained in the step 2 in the polytetrafluoroethylene template, and drying, curing and forming after natural leveling; and step 4, re-coating a layer of AB silica gel on the cured and molded mask, and supporting the mask after the mask is completely cured, so as to obtain the phase-change temperature-control cold compress mask. By utilizing the characteristic that the phase change material has high energy storage density during phase change, the prepared cold compress mask still has the characteristics of temperature control and cold storage under the condition that the thickness is relatively thin, and can play a certain role in medical cosmetology postoperative analgesia repair.

Description

Technical Field

[0001] The invention relates to the field of facial masks, in particular to a phase-change temperature-controlled cold compress facial mask. Background Art

[0002] Cold compresses after facial surgery are a key nursing measure aimed at reducing postoperative discomfort, promoting healing and accelerating recovery. After surgery, the face often experiences pain, swelling and inflammation. Cold compresses can effectively reduce the excitability of nerve endings by cooling the area locally, thereby relieving pain. They are particularly suitable for patients with sensitive skin and low pain tolerance. In addition, cold compresses can constrict blood vessels, reduce local blood flow, reduce swelling and inflammation, help speed up recovery and reduce discomfort. Cold compresses can also prevent and reduce the formation of congestion and bruises, and improve postoperative appearance. By lowering local temperature, cold compresses reduce tissue metabolic rate and oxygen demand, reduce the risk of postoperative infection and complications, and reduce the release of inflammatory substances, promoting wound healing. The comfort provided by cold compresses improves the overall comfort and satisfaction of patients, especially after cosmetic surgery.

[0003] In summary, facial cold compress after surgery is indispensable in postoperative care, has multiple functions and significant needs. Through scientific and reasonable cold compress care, it can effectively reduce postoperative discomfort, promote recovery, and enhance the patient's overall treatment experience. However, traditional cold compress methods (such as ice packs) have certain troubles in operation and may cause frostbite due to low temperatures. Common cold compress masks also cannot relieve pain due to their short cold compress time. Therefore, it is urgent to develop a phase change temperature control cold compress mask to solve the problems of cold compress temperature control and duration while meeting the existing cold compress needs. Summary of the invention

[0004] The purpose of the present invention is to disclose a phase-change temperature-controlled cold compress mask and a preparation method thereof, so as to solve the disadvantages of the existing cold compress mask mentioned in the above background technology that the cooling time is short and the temperature cannot be controlled. The technical solution adopted by the present invention to solve the above problem is: a preparation method of a phase-change temperature-controlled cold compress mask, characterized in that it comprises the following steps:

[0005] Step 1: Mix and prepare AB silica gel, stir evenly and then perform vacuum degassing;

[0006] Step 2, mixing the phase change microcapsules and AB silica gel, and stirring to obtain a mixed slurry;

[0007] Step 3: ultrasonically clean the polytetrafluoroethylene template in the shape of a mask, rinse it with deionized water, and then dry it naturally. Then, apply the mixed slurry obtained in step 2 to the polytetrafluoroethylene template, and dry and solidify it after it is naturally leveled;

[0008] Step 4: Apply another layer of AB silicone on the cured mask, and after it is completely cured, place the mask on the mask to obtain a phase-change temperature-controlled cold compress mask.

[0009] Furthermore, in the step 1, the A gel and the B gel in the AB silica gel are mixed in a mass ratio of 1:1 to 10, preferably 1:1 to 5, and more preferably 1:1 to 2.

[0010] Furthermore, in the step 1, the vacuum degassing pressure (gauge pressure) is -0.05 to -0.1 MPa, preferably -0.07 to -0.1 MPa, more preferably -0.08 to -0.1 MPa; the vacuum drying time is 30 to 60 min, preferably 40 to 60 min, more preferably 50 to 60 min.

[0011] Furthermore, in the step 1, the stirring rate is 100 to 500 r / min, preferably 100 to 300 r / min, more preferably 100 to 200 r / min; the stirring time is 10 to 30 min, preferably 10 to 20 min, more preferably 10 to 15 min.

[0012] Furthermore, in the step 2, the phase change material used in the phase change microcapsule is composed of one or more of tridecane, tetradecane, pentadecane, hexadecane, heptadecane and octadecane;

[0013] Furthermore, in the step 2, the mixing mass ratio of the phase change microcapsules to the AB silica gel is 1:1-10, preferably 1:1-5, and more preferably 1:1-2.

[0014] Furthermore, in the step 2, the stirring rate is 100 to 500 r / min, preferably 100 to 300 r / min, more preferably 100 to 150 r / min; the stirring time is 10 to 30 min, preferably 10 to 20 min, more preferably 10 to 15 min.

[0015] Furthermore, in the step three, the temperature for drying and curing is 80-160°C, preferably 80-120°C, and more preferably 80-100°C; the drying time is 5-120min, preferably 5-20min, and more preferably 10-20min; the thickness of the mixed slurry coating after drying is 0.5-3mm, preferably 1-3mm, and more preferably 1.5-2.5mm.

[0016] Furthermore, in the step 4, the temperature for drying and curing is 80-160°C, preferably 80-120°C, and more preferably 80-100°C; the drying time is 5-120 min, preferably 5-20 min, and more preferably 10-20 min; the thickness of the recoated AB silicone is 0.5-1 mm, preferably 0.5-0.8 mm, and more preferably 0.5-0.6 mm.

[0017] Furthermore, the preparation method described herein obtains a phase-change temperature-controlled cold compress mask.

[0018] Furthermore, the temperature control temperature of the phase change temperature control mask is 0 to 20°C, and the phase change enthalpy value of the material is 10 to 200 J / g.

[0019] Furthermore, the temperature control time of the phase change temperature control mask is 5 to 20 minutes.

[0020] The present invention utilizes the characteristic of high energy storage density of phase change material when it undergoes phase change, so that the prepared cold compress mask still has the characteristics of temperature control and cold storage when the thickness is relatively thin, which can play a certain role in analgesia and repair after medical cosmetic surgery.

[0021] The present invention has the following beneficial effects and advantages:

[0022] 1. The present invention can accurately and reliably control the cold compress temperature and the rewarming process, so that the body can be kept at the optimal temperature for a long time without being frostbitten due to the low temperature, and the phase change temperature control cold compress mask is flexible. Compared with the common ice cold compress, the mask can be well attached to the face after cold storage, which greatly improves the cold compress effect. Compared with the existing cold compress masks on the market, the phase change temperature control cold compress mask uses the latent heat provided by the phase change material to replace the sensible heat of ordinary materials, improves the energy storage density, and reduces the weight and thickness of the mask while ensuring the cold compress duration.

[0023] 2. The present invention can quickly achieve low temperature induction, control the temperature of cold compress, optimize the use of relaxation, greatly improve the efficiency of cold compress and ensure safety. At the same time, the invention has a simple production process and can be mass-produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a physical picture of a phase-change temperature-controlled cold compress mask according to Example 1 of the present invention;

[0025] Figure 2 This is a differential scanning calorimetry diagram of a phase-change temperature-controlled cold compress mask according to Example 1 of the present invention;

[0026] Figure 3 This is the actual application temperature change curve of the phase change temperature control cold compress mask of Example 1 of the present invention;

[0027] Figure 4 This is the actual application temperature change curve of the phase change temperature control cold compress mask of Example 2 of the present invention;

[0028] Figure 5 The actual application temperature change curve of the three-phase change temperature-controlled cold compress mask of the embodiment of the present invention;

[0029] Figure 6The actual application temperature change curves of the comparative phase change temperature control cold compress mask of the present invention and the common silicone mask on the market are compared; DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative achievements are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] The present invention relates to a phase-change temperature-controlled cold compress facial mask and a preparation method thereof, which is characterized by comprising the following steps:

[0034] Step 1: Mix and prepare AB silica gel, and place the mixture after stirring evenly in a vacuum environment for vacuum degassing;

[0035] Step 2, mixing the phase change microcapsules and AB silica gel, and stirring to obtain a mixed slurry;

[0036] Step 3: Prepare a polytetrafluoroethylene template (mold, shaped like Figure 1 After ultrasonic cleaning and deionized water washing (as shown), the mixture is naturally dried, and then the mixed slurry obtained in step 2 is coated on a polytetrafluoroethylene template in the shape of a mask, and dried and solidified after natural leveling;

[0037] Step 4: Re-apply a layer of AB silicone on the surface of the cured mask, and remove the mask after it is completely cured to obtain a phase change temperature-controlled cold compress mask.

[0038] The AB silica gel was purchased from Tai'an Junshuo Building Materials Co., Ltd., where 80g of A glue and 80g of B glue were mixed;

[0039] In the step 1, the vacuum degassing is performed in a negative pressure environment, the gauge pressure is -0.1 MPa, and the time is 60 min;

[0040] In the step 1, the stirring rate is 100 r / min and the stirring time is 10 min;

[0041] In the step 2, the phase change material used in the phase change microcapsule is composed of pentadecane, which is purchased from Shanghai Xinwu Chemical Co., Ltd.;

[0042] In the step 2, 80 g of phase change microcapsules and 160 g of AB silica gel are mixed;

[0043] In the step 2, the stirring rate is 100 r / min and the stirring time is 10 min;

[0044] In the step 3, the temperature of drying and curing is 160°C, the drying time is 5 minutes, and the thickness of the mixed slurry coating is 2 mm;

[0045] In the step 4, the drying and curing temperature is 160°C, the drying time is 5 minutes, and the thickness of the AB silica gel coating is 0.5 mm;

[0046] The phase change properties of the synthesized mask were tested by differential scanning calorimetry, and the test curve is shown in Figure 2 . It can be seen from the figure that the melting temperature of the mask is 0.8℃ and the phase change enthalpy is 52.71J / g;

[0047] Then, the temperature change of the mask after cold storage in a normal temperature environment was collected by Agilent data acquisition instrument, and the temperature change curve is shown in Figure 3 , it can be seen from the figure that the phase change platform period is about 20 minutes.

[0048] Embodiment 2:

[0049] The present invention relates to a phase-change temperature-controlled cold compress facial mask and a preparation method thereof, which is characterized by comprising the following steps:

[0050] Step 1: Mix and prepare AB silica gel, and place the mixture after stirring evenly in a vacuum environment for vacuum degassing;

[0051] Step 2, mixing the phase change microcapsules and AB silica gel, and stirring to obtain a mixed slurry;

[0052] Step 3: Prepare a polytetrafluoroethylene template (mold, shaped like Figure 1 After ultrasonic cleaning and deionized water washing (as shown), the mixture is naturally dried, and then the mixed slurry obtained in step 2 is coated on a polytetrafluoroethylene template in the shape of a mask, and dried and solidified after natural leveling;

[0053] Step 4: Apply a layer of AB silicone on the upper surface of the cured mask, and place the mask on the upper surface after it is completely cured to obtain a phase-change temperature-controlled cold compress mask.

[0054] The AB silica gel was purchased from Tai'an Junshuo Building Materials Co., Ltd., where 80g of A glue and 80g of B glue were mixed;

[0055] In the step 1, the vacuum degassing is performed in a negative pressure environment, the gauge pressure is -0.1 MPa, and the time is 60 min;

[0056] In the step 1, the stirring rate is 100 r / min and the stirring time is 10 min;

[0057] In the step 2, the phase change material used in the phase change microcapsule is composed of tetradecane and is purchased from Shanghai Xinwu Chemical Co., Ltd.;

[0058] In the step 2, 80 g of phase change microcapsules and 160 g of AB silica gel are mixed;

[0059] In the step 2, the stirring rate is 100 r / min and the stirring time is 10 min;

[0060] In the step 3, the temperature of drying and curing is 160°C, the drying time is 5 minutes, and the thickness of the mixed slurry coating is 2 mm;

[0061] In the step 4, the drying and curing temperature is 160°C, the drying time is 5 minutes, and the thickness of the AB silica gel coating is 0.5 mm;

[0062] The temperature change of the mask after cold storage in a normal temperature environment is collected by Agilent data acquisition instrument, and the temperature change curve is shown in Figure 4 , it can be seen from the figure that the phase change platform period is about 35 minutes.

[0063] Embodiment three:

[0064] The present invention relates to a phase-change temperature-controlled cold compress facial mask and a preparation method thereof, which is characterized by comprising the following steps:

[0065] Step 1: Mix and prepare AB silica gel, and place the mixture after stirring evenly in a vacuum environment for vacuum degassing;

[0066] Step 2, mixing the phase change microcapsules and AB silica gel, and stirring to obtain a mixed slurry;

[0067] Step 3: Prepare a polytetrafluoroethylene template (mold, shaped like Figure 1 After ultrasonic cleaning and deionized water washing (as shown), the mixture is naturally dried, and then the mixed slurry obtained in step 2 is coated on a polytetrafluoroethylene template, and dried and solidified to form after natural leveling;

[0068] Step 4: Apply another layer of AB silicone on the cured mask, and after it is completely cured, place the mask on the mask to obtain a phase-change temperature-controlled cold compress mask.

[0069] The AB silica gel was purchased from Tai'an Junshuo Building Materials Co., Ltd., where 80g of A glue and 80g of B glue were mixed;

[0070] In the step 1, the vacuum degassing is performed in a negative pressure environment, the gauge pressure is -0.1 MPa, and the time is 60 min;

[0071] In the step 1, the stirring rate is 100 r / min and the stirring time is 10 min;

[0072] In the step 2, the phase change material used in the phase change microcapsule is composed of hexadecane and is purchased from Shanghai Xinwu Chemical Co., Ltd.;

[0073] In the step 2, 80 g of phase change microcapsules and 160 g of AB silica gel are mixed;

[0074] In the step 2, the stirring rate is 100 r / min and the stirring time is 10 min;

[0075] In the step 3, the temperature of drying and curing is 160°C, the drying time is 5 minutes, and the thickness of the mixed slurry coating is 2 mm;

[0076] In the step 4, the drying and curing temperature is 160°C, the drying time is 5 minutes, and the thickness of the AB silica gel coating is 0.5 mm;

[0077] The temperature change of the mask after cold storage in a normal temperature environment is collected by Agilent data acquisition instrument, and the temperature change curve is shown in Figure 5 , it can be seen from the figure that the phase change platform period is about 20 minutes.

[0078] Comparative Example 1:

[0079] We compared the temperature control performance of common cold compress masks available on the market and tested their temperature changes under the same experimental conditions and environment (room temperature 23°C). See attached. Figure 6 It can be seen from the figure that the phase-change temperature-controlled cold compress mask of the present invention has excellent temperature-controlling performance and cold-storing performance.

[0080] The working principle of the present invention is:

[0081] For the phase-change temperature-controlled cold compress mask, when using it, first put the phase-change temperature-controlled cold compress mask in a low-temperature environment (-5°C) and take it out after 2 hours to make sure that the phase-change temperature-controlled cold compress mask has sufficient energy storage, and then apply the mask to the face. The introduction of silica gel can provide the mask with sufficient flexibility, so that it can better fit the face. At the same time, with the phase-change material, the thin layer of mask can also have the function of energy storage to achieve the effect of temperature control. Compared with existing products on the market, most cold compress mask products use the sensible heat of the material, which is far less than the phase change latent heat used in the present invention in terms of energy density, and thus cannot provide a longer cold compress time.

Claims

1. A method for preparing a phase-change temperature-controlled cold compress facial mask, characterized in that: The following steps are involved: Step 1: Mix and prepare AB silica gel, stir evenly and then perform vacuum degassing; Step 2, mixing the phase change microcapsules and AB silica gel, and stirring to obtain a mixed slurry; Step 3: ultrasonically clean the polytetrafluoroethylene template in the shape of the mask, rinse it with deionized water, and then dry it naturally. Then, apply the mixed slurry obtained in step 2 to the polytetrafluoroethylene template in the shape of the mask, and dry and solidify it after natural leveling; Step 4: Re-apply a layer of AB silicone on the surface of the cured mask, and remove the mask after it is completely cured to obtain a phase-change temperature-controlled cold compress mask.

2. The preparation method according to claim 1, characterized in that: In the step 1, the A gel and the B gel in the AB silica gel are mixed in a mass ratio of 1:1 to 10, preferably 1:1 to 5, and more preferably 1:1 to 2.

3. The preparation method according to claim 1, characterized in that: In the step 1, the pressure (gauge pressure) of vacuum degassing is -0.05 to -0.1 MPa, preferably -0.07 to -0.1 MPa, more preferably -0.08 to -0.1 MPa; the vacuum drying time is 30 to 60 min, preferably 40 to 60 min, more preferably 50 to 60 min. In the step 1, the stirring rate is 100 to 500 r / min, preferably 100 to 300 r / min, more preferably 100 to 200 r / min; the stirring time is 10 to 30 min, preferably 10 to 20 min, more preferably 10 to 15 min.

4. The preparation method according to claim 1, characterized in that: In the step 2, the phase change material used in the phase change microcapsule is composed of one or more of tridecane, tetradecane, pentadecane, hexadecane, heptadecane and octadecane.

5. The preparation method according to claim 1, characterized in that: In the step 2, the mixing mass ratio of the phase change microcapsules to the AB silica gel is 1:1-10, preferably 1:1-5, and more preferably 1:1-2; in the step 2, the stirring rate is 100-500 r / min, preferably 100-300 r / min, and more preferably 100-150 r / min; the stirring time is 10-30 min, preferably 10-20 min, and more preferably 10-15 min.

6. A phase-change temperature-controlled cold compress facial mask and a preparation method thereof according to claim 1, characterized in that: In the step 3, the polytetrafluoroethylene template in the shape of the mask is ultrasonically cleaned, rinsed with deionized water, and then naturally dried for standby use; In the step 3, the temperature for drying and curing is 80 to 160°C, preferably 80 to 120°C, more preferably 80 to 100°C; the drying time is 5 to 120 min, preferably 5 to 20 min, more preferably 10 to 20 min; The thickness of the mixed slurry coating after drying is 0.5 to 3 mm, preferably 1 to 3 mm, and more preferably 1.5 to 2.5 mm.

7. The preparation method according to claim 1, characterized in that: In the step 4, the temperature for drying and curing is 80 to 160°C, preferably 80 to 120°C, more preferably 80 to 100°C; The drying time is 5 to 120 min, preferably 5 to 20 min, more preferably 10 to 20 min; The thickness of the recoated AB silica gel is 0.5 to 1 mm, preferably 0.5 to 0.8 mm, and more preferably 0.5 to 0.6 mm.

8. A phase-change temperature-controlled cold compress facial mask prepared by the preparation method according to any one of claims 1 to 7.

9. The phase-change temperature-controlled cold compress facial mask according to claim 8, characterized in that: The temperature control temperature of the phase change temperature control mask is 0-20°C, and the phase change enthalpy value of the material is 10-200 J / g.

10. The phase-change temperature-controlled cold compress facial mask according to claim 8, characterized in that: The temperature control time of the phase change temperature control mask is 5 to 20 minutes.

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