A gel material, its preparation method and use

Abstract

The present application relates to a kind of gel materials and its preparation method and application.The gel material of the present application, preparation raw material includes polyethylene glycol, crosslinking agent and water-soluble grease, wherein, crosslinking agent hydrates after meeting water, and present crosslinking network structure distribution.Water-soluble grease plays the role similar to surfactant, as micro-bubble generation aid, can reduce the interfacial tension of water, thereby controlling the size of bubble, bubble duration and time in water suspension.The present application also provides the preparation method of the above gel material, filter core and cleaning device containing the above gel material, and the generation method of micro-nano bubble.The cleaning device includes shower, faucet or water gun.

Description

Technical Field

[0001] This invention belongs to the field of gel materials technology, specifically relating to a gel material, its preparation method, and its application. Background Technology

[0002] In recent years, micron-sized and nano-sized bubbles have attracted researchers' attention due to their unique physicochemical properties. Compared with conventional bubbles, micro and nano bubbles have characteristics such as large specific surface area, long bulk residence time, high mass transfer efficiency, and easy generation of free radicals, showing broad application prospects in wastewater treatment and biomedicine.

[0003] Controllable generation of micro / nanobubbles is fundamental to studying their physicochemical properties and potential applications. Related technologies include methods for generating micro / nanobubbles such as hydraulic cavitation, ultrasonic cavitation, pressure change, and electrochemical methods. The basic principle of hydraulic cavitation is cavitation itself; when the pressure on a flowing fluid suddenly drops below a certain critical value, cavities (bubbles) form. Therefore, hydraulic cavitation can be achieved by changing the velocity of the fluid in the system. However, micro / nanobubbles generated by hydraulic cavitation are difficult to control. Ultrasonic cavitation requires an ultrasonic system; when ultrasound propagates in a liquid, acoustic cavitation causes bubble formation. Ultrasonic cavitation can be divided into two stages: the first stage involves capillary waves generated at the interface entraining droplets / bubbles in the liquid; the second stage involves cavitation inducing the droplets / large bubbles to break down into smaller droplets / bubbles until stable droplets / bubbles are formed. Ultrasonic cavitation requires specialized ultrasonic equipment. The pressure change method follows Henry's Law, which states that at a constant temperature, the solubility of a gas in a solution is directly proportional to its partial pressure at the liquid surface. Therefore, gas solubility changes with system pressure; higher pressure results in higher solubility, and lower pressure in lower solubility. The pressure change method generates microbubbles or nanobubbles by increasing the system pressure to increase gas solubility. When the pressure decreases, the gas in the solution becomes supersaturated, and under suitable conditions, it will exist as microbubbles or nanobubbles. However, the microbubbles generated by the pressure change method are difficult to control. The electrochemical method generates microbubbles or nanobubbles based on electrolysis. During electrolysis, current passes through the electrodes, causing redox reactions that produce hydrogen and oxygen at the cathode and anode, respectively, thus generating microbubbles or nanobubbles at the electrodes. The electrochemical method requires specialized equipment.

[0004] In summary, existing methods for generating micro- and nano-bubbles have various drawbacks, and there is still a need to develop a simple, controllable, and low-cost material and method for generating micro- and nano-bubbles. Summary of the Invention

[0005] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. To this end, the present invention provides a gel material that, upon contact with water, readily generates micro- and nano-bubbles, and enables these micro- and nano-bubbles to remain stable for a long period of time.

[0006] The present invention also provides a method for preparing a gel material.

[0007] The present invention also provides a filter element containing the above-mentioned gel material.

[0008] The present invention also provides a cleaning apparatus containing the above-mentioned gel material.

[0009] The present invention also provides a method for generating micro- and nano-bubbles.

[0010] A first aspect of the present invention provides a gel material, the raw materials for which include polyethylene glycol, a crosslinking agent and a water-soluble oil.

[0011] One of the technical solutions of the present invention concerning gel materials has at least the following beneficial effects:

[0012] The gel material of this invention is prepared from polyethylene glycol, a crosslinking agent, and water-soluble oils. The crosslinking agent, upon contact with water, undergoes hydration and forms a crosslinked network structure. The water-soluble oils act as surfactants, serving as microbubble generators and reducing the interfacial tension of water, thereby controlling the bubble size, bubble duration, and bubble suspension time in water.

[0013] The gel material of this invention, upon contact with water, reduces the surface tension of the water, making it easier for negative pressure to be drawn into the water flow near the gel. This allows air to enter the water and form microbubbles. When the water flow collides with the interface, these microbubbles are more easily sheared, helping to prolong their existence time. When the water contains a large number of micron and nano-sized bubbles, it can enhance the cleaning effect on the skin and pores during bathing and facial cleansing. The energy generated when the microbubbles burst also massages the skin and improves blood circulation. Furthermore, when the water contains a large number of micron and nano-sized bubbles, it can also enhance the cleaning effect on object surfaces; the energy generated when the microbubbles burst also helps to remove stains from the object's surface.

[0014] According to some embodiments of the present invention, the polyethylene glycol includes at least one of PEG-8, PEG-20, PEG-32, PEG-75, PEG-90, PEG-100, PEG-150, PEG-200, PEG-400, PEG-450, and PEG-800.

[0015] According to some embodiments of the present invention, the CAS number of PEG-8 is 5117-19-1.

[0016] The CAS number of PEG-20, PEG-32, PEG-75, PEG-90, PEG-100, PEG-150, PEG-200, PEG-400, PEG-450 and PEG-800 is 25322-68-3.

[0017] The naming of the aforementioned polyethylene glycol conforms to the INCI (International Nomenclature Cosmetic Ingredient) rules, where the number indicates the degree of polymerization.

[0018] In the preparation of raw materials, the lower the degree of polymerization of polyethylene glycol (PEG), the softer the resulting gel material. During use, the gel material is easily dispersed by flowing water or decomposes due to its inability to withstand high temperatures. Conversely, the higher the degree of polymerization of PEG, the harder the resulting gel material, and the slower the filter cartridge dissolves and releases its contents, thus affecting the filter cartridge's functionality during use. Therefore, it is necessary to select an appropriate degree of polymerization of PEG.

[0019] Polyethylene glycol can be a mixture of low-polymerization-degree polyethylene glycol and high-polymerization-degree polyethylene glycol. Therefore, by mixing polyethylene glycols with different polymerization degrees, the hardness and compactness of the gel material can be adjusted, thereby preparing gel materials with different properties according to the requirements of the gel's application environment.

[0020] According to some embodiments of the present invention, the polyethylene glycol includes PEG-32 and / or PEG-150.

[0021] The number average molecular weight of PEG-32 is 1500.

[0022] The number average molecular weight of PEG-150 is 6000.

[0023] According to some embodiments of the present invention, the crosslinking agent includes sodium hyaluronate and its derivatives.

[0024] Sodium hyaluronate acts as a cross-linking agent in the formulation's framework system. After hydration with water, it is distributed in a cross-linked network structure.

[0025] Sodium hyaluronate acts as a cross-linking agent in the formulation's framework. When the amount of sodium hyaluronate in the formulation is high, the gel structure is strong and the dissolution rate is slow. When the amount of sodium hyaluronate in the formulation is low, the framework system is loose, the structural strength is weak, and the gel is easily broken by the impact of water flow.

[0026] Derivatives of sodium hyaluronate refer to acetylated sodium hyaluronate or cross-linked polymers of sodium hyaluronate.

[0027] The purpose of adding acetylated sodium hyaluronate is to increase the adhesion of the gel material, improve the moisturizing effect, and enhance the stability of the gel system.

[0028] The purpose of adding sodium hyaluronate cross-linked polymer is that, due to the longer chain length of the sodium hyaluronate cross-linked polymer, the network structure of the gel material will be more stable.

[0029] According to some embodiments of the present invention, the water-soluble oil comprises at least one of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0030] According to some embodiments of the present invention, in water-soluble oils:

[0031] The CAS number for PPG-28-butanol polyether-35 is 9038-95-3.

[0032] The CAS number for PEG-7 glyceryl cocoate is 68201-46-7.

[0033] The CAS number for PEG-6 caprylic / capric triglyceride is 361459-38-3.

[0034] The CAS number for polyglycerol-10 fatty acid ester is 9007-48-1.

[0035] The CAS number for polyglycerol-6 distearate is 34424-97-0.

[0036] The CAS number for polyglycerol-2 isostearate is 73296-86-3.

[0037] According to some embodiments of the present invention, the water-soluble oil is one of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0038] According to some embodiments of the present invention, the water-soluble oil is a mixture of several of the following: PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0039] When different water-soluble oils are used as raw materials, the resulting gel materials can produce bubbles with different properties.

[0040] The water-soluble oil PPG-28-butanol polyether-35 produces bubbles with good suspension properties and a relatively small amount of bubbles.

[0041] Water-soluble oils such as PEG-7 glyceryl cocoate produce a relatively large number of bubbles, but the bubble suspension is relatively poor.

[0042] The bubbles produced by the water-soluble oil PEG-6 caprylic / capric triglyceride are between those of PPG-28-butanol polyether-35 and PEG-7 glyceryl cocoate. The bubbles produced are whitish in color. When used to prepare gel materials, the whitish bubbles can enhance the visual effect of the bubbles, making the bubbles in the water appear more uniform and fine, which can improve the user experience.

[0043] Therefore, depending on the usage environment and specific needs, one can choose a single water-soluble oil or a combination of multiple water-soluble oils.

[0044] According to some embodiments of the present invention, the raw materials for preparation, by weight, include:

[0045] Polyethylene glycol: 15 to 40 parts;

[0046] Crosslinking agent: 1.5 to 15 parts

[0047] Water-soluble oils: 5 to 15 parts.

[0048] The suitable raw material range is 15 to 40 parts of polyethylene glycol, 1.5 to 15 parts of crosslinking agent, and 5 to 15 parts of water-soluble oil.

[0049] According to some embodiments of the present invention, the raw materials for preparation also include at least one of skin conditioning agents, water purification agents, citric acid, skin feel modifiers, and fragrances.

[0050] According to some embodiments of the present invention, the skin conditioning agent includes a soothing and anti-inflammatory agent.

[0051] According to some embodiments of the present invention, the soothing and anti-inflammatory agent includes at least one of dipotassium glycyrrhizate, stearyl glycyrrhizate, glycyrrhizin flavonoids, ceramide, tocopheryl acetate, bisabolol, resveratrol, and hydroxyphenylpropionamide benzoic acid.

[0052] According to some embodiments of the present invention, the soothing and anti-inflammatory agent includes at least one of dipotassium glycyrrhizate, ceramide, and tocopheryl acetate.

[0053] The gel contains soothing and anti-inflammatory agents, which help to soothe sensitive skin and reduce skin inflammation.

[0054] According to some embodiments of the present invention, the water purification agent includes a residual chlorine removal agent.

[0055] According to some embodiments of the present invention, the residual chlorine removal agent includes at least one of ascorbic acid, sodium ascorbate, isoascorbic acid, and sodium isoascorbate.

[0056] According to some embodiments of the present invention, the residual chlorine remover is sodium isoascorbate.

[0057] The addition of a residual chlorine remover to the gel removes residual chlorine from tap water, thus preventing skin damage and irritation caused by residual chlorine and making the water purer and gentler.

[0058] According to some embodiments of the present invention, citric acid is an antioxidant that acts as a synergist and stabilizer, and can also protect the residual chlorine remover and prolong the effective action time of the residual chlorine remover in the gel.

[0059] Citric acid is added to the gel, and when water comes into contact with the gel and acts on the skin, it can remove some of the dead skin cells.

[0060] According to some embodiments of the present invention, the skin feel modifier includes menthol lactate.

[0061] Because skin feel modifiers are added to the gel material, water that comes into contact with the gel can adjust the skin feel and bring a cooling sensation to the skin.

[0062] According to some embodiments of the present invention, the fragrance is a common commercially available daily chemical fragrance or food fragrance.

[0063] According to some embodiments of the present invention, the raw materials for preparation, by weight, include:

[0064] Polyethylene glycol: 15 to 40 parts;

[0065] Crosslinking agent: 1.5 to 15 parts

[0066] Water-soluble oils: 5 to 15 parts

[0067] Skin conditioning agent: 0.1 to 10 parts;

[0068] Water purification agent: 15 to 30 parts;

[0069] Citric acid: 0.5 to 20 parts;

[0070] Skin feel modifier: 2 to 10 parts

[0071] Flavoring: 2 to 10 parts.

[0072] A second aspect of the present invention provides a method for preparing the gel material, comprising the following steps: heating and melting the polyethylene glycol, then sequentially adding the crosslinking agent and water-soluble oil to obtain the gel material.

[0073] One technical solution of the present invention relating to a method for preparing gel materials has at least the following beneficial effects:

[0074] The gel material of the present invention has a simple preparation method, requires no expensive equipment or complex process control, is easy to operate, and can be promoted on a large scale for industrial application.

[0075] According to some embodiments of the present invention, the heating and melting temperature is 80°C to 90°C.

[0076] According to some embodiments of the present invention, the heating and melting temperature is 80°C to 85°C.

[0077] According to some embodiments of the present invention, a method for preparing a gel material includes the following steps:

[0078] Add polyethylene glycol to a mixing pot and heat it to 80℃~85℃ until it is completely melted, and then continue to maintain it at this temperature;

[0079] Add cross-linking agent and skin conditioning agent, continue stirring for 30-40 minutes until fully mixed, and keep warm at 60℃-65℃;

[0080] Add water-soluble oils and continue stirring for 10 to 20 minutes until fully mixed, and keep warm at 60℃-65℃.

[0081] Add citric acid, water purifier, skin feel modifier and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold and cool to form a gel material.

[0082] A third aspect of the present invention provides a filter cartridge comprising the aforementioned gel material.

[0083] One of the technical solutions of the present invention concerning filter elements has at least the following beneficial effects:

[0084] The filter cartridge is used to filter water. Because the filter cartridge is filled with the aforementioned gel material, which can reduce the surface tension of water, it makes it easier for negative pressure to be drawn into the water flow in contact with the gel material, thereby forming air bubbles. When the water flow collides with the interface, it is easier to shear into tiny bubbles, which helps to prolong the existence time of the bubbles.

[0085] After water is filtered using the filter cartridge of this invention, a large number of micron and nano-sized bubbles are generated in the water. When the water contains a large number of micron and nano-sized bubbles, using such water for bathing or facial cleansing can enhance the cleansing effect on the skin and pores. In addition, the energy generated when the microbubbles in the water burst also massages the skin and improves blood circulation.

[0086] After water is filtered using the filter element of this invention, a large number of micron and nano-sized bubbles will be generated in the water. When the water contains a large number of micron and nano-sized bubbles, it can also improve the cleaning effect on the surface of objects. When the microbubbles burst, the energy generated helps to clean the stains on the surface of objects.

[0087] According to some embodiments of the present invention, in addition to the gel material described above, the filter element may also be filled with other materials that have water purification effects.

[0088] According to some embodiments of the present invention, a filter cartridge filled with gel can be used in parallel with other filter cartridges that have water purification functions.

[0089] According to some embodiments of the present invention, the filter cartridge filled with gel can also be used in series with other filter cartridges that have water purification functions.

[0090] A fourth aspect of the present invention provides a cleaning apparatus comprising the aforementioned filter element.

[0091] One technical solution of the present invention concerning a cleaning device has at least the following beneficial effects:

[0092] The cleaning apparatus of the present invention includes the aforementioned filter element, which is used to filter water. Because the filter element is filled with the gel material, and the gel material can reduce the surface tension of water, it allows for easier entrapment of negative pressure near the water flow in contact with the gel, thereby forming microbubbles. These microbubbles are more easily sheared into air when the water flow collides with the interface, thus helping to prolong the existence time of the bubbles.

[0093] When using the cleaning device of the present invention, since the water contains a large number of micron and nano-sized bubbles, using such water to clean the surface of an object can improve the cleaning effect of the object surface. The energy generated when the microbubbles burst helps to clean the stains on the surface of the object.

[0094] According to some embodiments of the present invention, the cleaning device includes a shower head, a faucet, or a water gun.

[0095] According to some embodiments of the present invention, when the cleaning device is a shower head, since the shower head is filled with the aforementioned gel material, when water and the gel in the shower head react, a large number of micron and nano-sized bubbles are generated in the water. When the water contains a large number of micron and nano-sized bubbles, using such water for bathing or facial cleansing can enhance the cleaning effect on the skin and pores during bathing or facial cleansing. In addition, the energy generated when the microbubbles in the water burst also has the effect of massaging the skin and improving blood circulation.

[0096] According to some embodiments of the present invention, when the cleaning device is a faucet, the faucet may have a shower head structure or a venturi structure.

[0097] According to some embodiments of the present invention, when the cleaning device is a water gun, since the water gun is filled with the above-mentioned gel material, when the water and the gel in the water gun react, a large number of micron and nano-sized bubbles are generated in the water. When the water contains a large number of micron and nano-sized bubbles, it can also improve the cleaning effect on the surface of the object. When the microbubbles burst, the energy generated helps to clean the stains on the surface of the object.

[0098] The fifth aspect of the present invention provides a method for generating micro-nano bubbles, wherein the method for generating micro-nano bubbles is to allow water to flow through the gel material.

[0099] One technical solution of the present invention relating to a method for generating micro / nano bubbles has at least the following beneficial effects:

[0100] This invention relates to a method for generating micro / nano bubbles, which is simple and easy to implement. It only requires water to flow through a gel material. As the water flows through the gel, its surface tension is reduced, making it easier for negative pressure to be drawn into the water near the gel, thus allowing air to enter and form microbubbles. When the water collides with the interface, it is more easily sheared into microbubbles, helping to prolong their existence time. When the water contains a large number of micro / nano-sized bubbles, it can enhance the cleaning effect on the skin and pores during bathing and facial cleansing. The energy generated when the microbubbles burst also massages the skin and improves blood circulation. Furthermore, when the water contains a large number of micro / nano-sized bubbles, it can also enhance the cleaning effect on object surfaces; the energy generated when the microbubbles burst helps to remove stains from the object's surface. Attached Figure Description

[0101] Figure 1 This is an optical micrograph of air bubbles in a stream of water flowing through the gel material prepared in Example 1.

[0102] Figure 2 This is an optical micrograph of air bubbles in the water flowing through the gel material prepared in Comparative Example 1. Detailed Implementation

[0103] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the embodiments, but the present invention is not limited to these embodiments.

[0104] In some embodiments of the present invention, the present invention provides a gel material, the raw materials for which include polyethylene glycol, a crosslinking agent and water-soluble oils.

[0105] It is understood that the gel material of the present invention is prepared from polyethylene glycol, a crosslinking agent, and water-soluble oils. The crosslinking agent, upon contact with water, undergoes hydration and forms a crosslinked network structure. The water-soluble oils act as surfactants, serving as microbubble generators and reducing the interfacial tension of water, thereby controlling the bubble size, bubble duration, and bubble suspension time in water.

[0106] Specifically, the gel material of this invention, upon contact with water, reduces the surface tension of the water, making it easier for negative pressure to be drawn into the water flow near the gel. This allows air to enter the water and form microbubbles. When the water flow collides with the interface, these microbubbles are more easily sheared, helping to prolong their existence time. When the water contains a large number of micron and nano-sized bubbles, it enhances the cleaning effect on the skin and pores during bathing and facial cleansing. The energy generated when the microbubbles burst also massages the skin and improves blood circulation. Furthermore, when the water contains a large number of micron and nano-sized bubbles, it also enhances the cleaning effect on object surfaces; the energy generated when the microbubbles burst also helps to remove stains from the object's surface.

[0107] In some embodiments of the present invention, polyethylene glycol includes at least one of PEG-8, PEG-20, PEG-32, PEG-75, PEG-90, PEG-100, PEG-150, PEG-200, PEG-400, PEG-450, and PEG-800.

[0108] Specifically, the CAS number for PEG-8 is 5117-19-1.

[0109] The CAS number of PEG-20, PEG-32, PEG-75, PEG-90, PEG-100, PEG-150, PEG-200, PEG-400, PEG-450 and PEG-800 is 25322-68-3.

[0110] The naming of the aforementioned polyethylene glycol conforms to the INCI (International Nomenclature Cosmetic Ingredient) rules, where the number indicates the degree of polymerization.

[0111] It is understood that the lower the degree of polymerization of polyethylene glycol in the raw materials, the softer the resulting gel material. During use, the gel material is easily dispersed by flowing water or decomposes due to its inability to withstand high temperatures. Conversely, the higher the degree of polymerization of polyethylene glycol, the harder the resulting gel material, resulting in slower dissolution and release of the filter cartridge, which affects the performance of the filter cartridge during use. Therefore, it is necessary to select an appropriate degree of polymerization of polyethylene glycol.

[0112] It can also be understood that polyethylene glycol can be a mixture of low-polymerization-degree polyethylene glycol and high-polymerization-degree polyethylene glycol. Therefore, by mixing polyethylene glycols with different polymerization degrees, the hardness and compactness of the gel material can be adjusted, thereby preparing gel materials with different properties according to the requirements of the gel's application environment.

[0113] In some embodiments of the present invention, polyethylene glycol includes PEG-32 and / or PEG-150.

[0114] Specifically, PEG-32 has a number average molecular weight of 1500. The addition ratio ranges from 12wt% to 25wt% of the total mass of the raw materials used in gel material preparation. PEG-32 has a melting point of 41℃ to 42℃. A high dosage in the formulation results in a low gel melting point, poor thermal stability, and a tendency for high-temperature delamination. A low proportion results in a loose skeletal structure, making stable molding impossible. Specifically, after heating and melting, PEG-32 can be compounded with PEG-150 and PEG-450 to form a ternary eutectic, which solidifies upon cooling to form a gel skeleton.

[0115] PEG-150 has a number average molecular weight of 6000. The addition ratio ranges from 10wt% to 20wt% of the total mass of the raw materials used in gel material preparation. PEG-150 has a melting point of 55℃ to 60℃. Higher dosages in the formulation result in a high gel melting point, making filling difficult and reducing solubility. Lower dosages result in a low gel melting point, poor thermal stability, and high-temperature stratification. Specifically, after heating and melting, PEG-150 can be compounded with PEG-32 and PEG-450 to form a ternary eutectic, which solidifies upon cooling to form a gel framework.

[0116] The addition ratio of PEG-450 ranges from 0.2wt% to 2wt% of the total mass of the raw materials used in gel material preparation. PEG-450 has a melting point of 60℃ to 65℃. Higher dosages in the formulation result in a high gel melting point, making filling difficult and reducing solubility. Lower dosages result in a low gel melting point, poor thermal stability, and high-temperature stratification. Specifically, after heating and melting, PEG-450 can be compounded with PEG-32 and PEG-150 to form a ternary eutectic, which solidifies upon cooling to form a gel framework.

[0117] When the polyethylene glycol in the preparation raw materials is a mixture of PEG-32, PEG-150 and PEG-450, the sum of the added amounts of PEG-32, PEG-150 and PEG-450 must meet the total ratio range of the preparation raw materials.

[0118] In some embodiments of the present invention, the crosslinking agent includes sodium hyaluronate and its derivatives.

[0119] Sodium hyaluronate acts as a cross-linking agent in the formulation's framework system. After hydration with water, it is distributed in a cross-linked network structure.

[0120] Sodium hyaluronate acts as a cross-linking agent in the formulation's framework. When the amount of sodium hyaluronate in the formulation is high, the gel structure is strong and the dissolution rate is slow. When the amount of sodium hyaluronate in the formulation is low, the framework system is loose, the structural strength is weak, and the gel is easily broken by the impact of water flow.

[0121] Derivatives of sodium hyaluronate refer to acetylated sodium hyaluronate or cross-linked polymers of sodium hyaluronate.

[0122] The purpose of adding acetylated sodium hyaluronate is to increase the adhesion of the gel material, improve the moisturizing effect, and enhance the stability of the gel system.

[0123] The purpose of adding sodium hyaluronate cross-linked polymer is that, due to the longer chain length of the sodium hyaluronate cross-linked polymer, the network structure of the gel material will be more stable.

[0124] It should be noted that while adding acetylated sodium hyaluronate and sodium hyaluronate cross-linking polymers can improve the stability of gel materials, it also increases product costs. Therefore, the decision to add acetylated sodium hyaluronate and sodium hyaluronate cross-linking polymers should be made based on the product's positioning.

[0125] In some embodiments of the present invention, the water-soluble oils include at least one of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0126] Specifically, in water-soluble oils:

[0127] The CAS number for PPG-28-butanol polyether-35 is 9038-95-3. The addition amount in the raw materials for gel preparation is 4wt% to 8wt% of the total mass of the raw materials. As a microbubble generator, it can control bubble size, duration, and suspension time in water. PPG-28-butanol polyether-35 is a liquid; high dosage in the formulation results in a low gel melting point, a soft system, poor thermal stability, high-temperature stratification, high foaming volume, small bubble size, long duration, and long suspension time in water. Low dosage in the formulation results in a hard system, low foaming volume, large bubbles, short duration, and short suspension time in water.

[0128] PEG-7 glyceryl cocoate has the CAS number 68201-46-7. Its addition amount in the gel preparation raw materials is 3wt% to 7wt% of the total mass of the raw materials. As a microbubble generator, it can control bubble size, duration, and suspension time in water. PEG-7 glyceryl cocoate is a liquid; high dosage in the formulation results in a low gel melting point, a soft system, poor thermal stability, high-temperature stratification, high foaming volume, small bubble size, long duration, and short suspension time in water. Low dosage in the formulation results in a hard system, low foaming volume, large bubbles, and short duration.

[0129] The CAS number for PEG-6 caprylic / capric triglyceride is 361459-38-3. The addition amount in the raw materials for gel preparation is 1wt% to 2wt% of the total mass of the raw materials. As a microbubble generator, it can control bubble size, duration, and suspension time in water. PEG-6 caprylic / capric triglyceride is a liquid; high dosage in the formulation results in a low gel melting point, a soft system, poor thermal stability, high-temperature stratification, high foaming volume, small bubble size, long duration, and long suspension time in water. Low dosage in the formulation results in a hard system, low foaming volume, large bubbles, short duration, and short suspension time in water.

[0130] The CAS number for polyglycerol-10 fatty acid ester is 9007-48-1.

[0131] The CAS number for polyglycerol-6 distearate is 34424-97-0.

[0132] The CAS number for polyglycerol-2 isostearate is 73296-86-3.

[0133] In some embodiments of the present invention, the water-soluble oil is one of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0134] In some embodiments of the present invention, the water-soluble oil is a mixture of several of the following: PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, PEG-6 caprylic / capric glyceride, polyglycerol-10 fatty acid ester, polyglycerol-6 distearate, and polyglycerol-2 isostearate.

[0135] Compared to PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, and PEG-6 caprylic / capric glyceride, the water-soluble oil PPG-28-butanol polyether-35 generally produces bubbles with good suspension but relatively fewer bubbles. PEG-7 glyceryl cocoate produces a relatively large number of bubbles, but its bubble suspension is relatively poor. PEG-6 caprylic / capric glyceride produces bubbles between those of PPG-28-butanol polyether-35 and PEG-7 glyceryl cocoate; these bubbles are whitish in color. When used in the preparation of gel materials, the whitish color of the bubbles enhances their visual appeal, making the bubbles in the water appear more uniform and fine, thus improving the user experience.

[0136] It is understandable that when different water-soluble oils are used as raw materials, the resulting gel materials can produce bubbles with different properties.

[0137] Therefore, depending on the usage environment and specific needs, one can choose a single water-soluble oil or a combination of multiple water-soluble oils.

[0138] When the water-soluble oils in the raw materials are a mixture of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate and PEG-6 caprylic / capric glyceride, the sum of the amounts of the three added must meet the total ratio range of the raw materials.

[0139] In some embodiments of the present invention, the raw materials for preparation, by weight, include:

[0140] Polyethylene glycol: 15 to 40 parts;

[0141] Crosslinking agent: 1.5 to 15 parts

[0142] Water-soluble oils: 5 to 15 parts.

[0143] The suitable raw material range is 15 to 40 parts of polyethylene glycol, 1.5 to 15 parts of crosslinking agent, and 5 to 15 parts of water-soluble oil.

[0144] In some embodiments of the present invention, the raw materials for preparation also include at least one of skin conditioning agents, water purification agents, citric acid, skin feel modifiers, and fragrances.

[0145] In some embodiments of the invention, the skin conditioning agent includes a soothing and anti-inflammatory agent.

[0146] In some embodiments of the present invention, the soothing and anti-inflammatory agent includes at least one of dipotassium glycyrrhizate, stearyl glycyrrhizate, glycyrrhizin flavonoids, ceramide, tocopheryl acetate, bisabolol, resveratrol, and hydroxyphenylpropionamide benzoic acid.

[0147] In some embodiments of the present invention, the soothing and anti-inflammatory agent includes at least one of dipotassium glycyrrhizate, ceramide, and tocopheryl acetate.

[0148] The gel contains soothing and anti-inflammatory agents, which help to soothe sensitive skin and reduce skin inflammation.

[0149] Dipotassium glycyrrhizate acts as a water-soluble soothing and anti-allergic agent. Low concentrations in the formulation result in poor soothing and anti-allergic effects. High concentrations lead to a strong gel structure but slow dissolution. The optimal concentration of dipotassium glycyrrhizate is 1 wt% to 5 wt%.

[0150] Tocopheryl acetate functions as a nourishing and moisturizing agent. Low concentrations in the formulation result in poor gelation and wetting properties. High concentrations lead to poor thermal stability and the formation of an oily liquid. The suitable addition amount of tocopheryl acetate is 0.5 wt% to 2 wt%.

[0151] Stearyl glycyrrhetinic acid ester functions as an oil-soluble soothing and anti-allergic agent. If the dosage in the formulation is low, the gel's soothing and anti-allergic effect will be poor. If the dosage in the formulation is high, insufficient dissolution and dispersion may occur, easily leading to the precipitation of solid particles.

[0152] In some embodiments of the present invention, the water purification agent includes a residual chlorine remover.

[0153] In some embodiments of the present invention, the residual chlorine removal agent includes at least one of ascorbic acid, sodium ascorbate, isoascorbic acid, and sodium isoascorbate.

[0154] In some embodiments of the present invention, sodium isoascorbate is used as the residual chlorine remover. If the dosage in the formulation is low, the residual chlorine removal rate is low. If the dosage in the formulation is high, the skeletal system is loose, the structural strength is weak, and the gel is easily broken by the impact of water flow and dissolves rapidly.

[0155] The addition of a residual chlorine remover to the gel removes residual chlorine from tap water, thus preventing skin damage and irritation caused by residual chlorine and making the water purer and gentler.

[0156] In some embodiments of the present invention, citric acid is an antioxidant that acts as a synergist and stabilizer, and can also protect the residual chlorine remover and prolong the effective action time of the residual chlorine remover in the gel.

[0157] Citric acid is added to the gel, and when water comes into contact with the gel and acts on the skin, it can remove some of the dead skin cells.

[0158] In some embodiments of the present invention, the skin feel modifier includes menthol lactate.

[0159] Because skin feel modifiers are added to the gel material, water that comes into contact with the gel can adjust the skin feel and bring a cooling sensation to the skin.

[0160] In some embodiments of the present invention, the fragrance is a common commercially available daily chemical fragrance or food fragrance.

[0161] The purpose of fragrance is to provide aroma. If the amount of fragrance in the formula is low, the scent will be weak when the gel is washed with water. If the amount of fragrance in the formula is high, the gel will be unstable, easily exuding an oily liquid, and posing a high risk of irritation.

[0162] In some embodiments of the present invention, the raw materials for preparation, by weight, include:

[0163] Polyethylene glycol: 15 to 40 parts;

[0164] Crosslinking agent: 1.5 to 15 parts

[0165] Water-soluble oils: 5 to 15 parts

[0166] Skin conditioning agent: 0.1 to 10 parts;

[0167] Water purification agent: 15 to 30 parts;

[0168] Citric acid: 0.5 to 20 parts;

[0169] Skin feel modifier: 2 to 10 parts

[0170] Flavoring: 2 to 10 parts.

[0171] In some embodiments of the present invention, the present invention provides a method for preparing a gel material, comprising the following steps: heating and melting polyethylene glycol, and then sequentially adding a crosslinking agent and a water-soluble oil to obtain a gel material.

[0172] It can be understood that the gel material of the present invention has a simple preparation method, does not require expensive equipment and complex process control, is easy to operate and can be promoted on a large scale for industrial application.

[0173] In some embodiments of the present invention, the heating and melting temperature is 80°C to 90°C.

[0174] In some embodiments of the present invention, the heating and melting temperature is 80°C to 85°C.

[0175] In some embodiments of the present invention, the method for preparing the gel material includes the following steps:

[0176] Add polyethylene glycol to a mixing pot and heat it to 80℃~85℃ until it is completely melted, and then continue to maintain it at this temperature;

[0177] Add cross-linking agent and skin conditioning agent, continue stirring for 30-40 minutes until fully mixed, and keep warm at 60℃-65℃;

[0178] Add water-soluble oils and continue stirring for 10 to 20 minutes until fully mixed, and keep warm at 60℃-65℃.

[0179] Add citric acid, water purifier, skin feel modifier and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold and cool to form a gel material.

[0180] In some embodiments of the present invention, the present invention provides a filter element comprising a gel material.

[0181] Generally, filter cartridges are used to filter water. Because the filter cartridge is filled with a gel material, which can reduce the surface tension of water, it makes it easier for negative pressure to be drawn into the water flow that comes into contact with the gel material. This causes air to form bubbles, which are more easily sheared into tiny bubbles when the water flow collides with the interface, thus helping to prolong the existence time of the bubbles.

[0182] It is understandable that after water is filtered using the filter cartridge of this invention, a large number of micron and nano-sized bubbles will be generated in the water. When the water contains a large number of micron and nano-sized bubbles, using such water for bathing or facial cleansing can enhance the cleansing effect on the skin and pores. In addition, the energy generated when the microbubbles in the water burst also has the effect of massaging the skin and improving blood circulation.

[0183] After water is filtered using the filter element of this invention, a large number of micron and nano-sized bubbles will be generated in the water. When the water contains a large number of micron and nano-sized bubbles, it can also improve the cleaning effect on the surface of objects. When the microbubbles burst, the energy generated helps to clean the stains on the surface of objects.

[0184] In some embodiments of the present invention, in addition to being filled with gel material, the filter cartridge may also be filled with other materials that have water purification effects.

[0185] In some embodiments of the present invention, the filter cartridge filled with gel can be used in parallel with other filter cartridges that have water purification functions. When used in parallel, the water flow rate is greater and the purification efficiency is higher.

[0186] In some embodiments of the present invention, the filter cartridge filled with gel can also be used in series with other filter cartridges that have water purification functions. When used in series, water first passes through the gel to generate bubbles, and then passes through other filter cartridges for purification and filtration, or water first passes through other filter cartridges for purification and filtration, and then passes through the gel to generate bubbles. In this way, water that is both clean and full of micro-nano bubbles can be obtained to meet different requirements.

[0187] Understandably, there are no special restrictions or requirements on the structure of the filter element. In principle, the more conducive the filter element structure is to the contact between water and gel material, the more complete the contact between water and gel material, and the more numerous and dense the bubbles generated.

[0188] In some embodiments of the present invention, a cleaning device is provided, which includes the above-described filter element.

[0189] It can also be understood that the cleaning device of the present invention is provided with the above-mentioned filter element, which is used to filter water. Since the filter element is filled with gel material, and the gel material can reduce the surface tension of water, it can make it easier for negative pressure to be drawn in near the water flow in contact with the gel, thereby forming air microbubbles. When the water flow collides with the interface, it is easier to shear into microbubbles, which helps to prolong the existence time of the bubbles.

[0190] It can also be understood that when using the cleaning device of the present invention, since the water contains a large number of micron and nano-sized bubbles, using such water to clean the surface of an object can improve the cleaning effect of the object surface. The energy generated when the microbubbles burst helps to clean the stains on the surface of the object.

[0191] In some embodiments of the present invention, the cleaning device includes a shower head, a faucet, or a water gun.

[0192] It can be understood that when the cleaning device is a showerhead, because the showerhead is filled with the aforementioned gel material, when water and the gel in the showerhead react, a large number of micron and nano-sized bubbles are generated in the water. When the water contains a large number of micron and nano-sized bubbles, using such water for bathing or facial cleansing can enhance the cleansing effect on the skin and pores. In addition, when the microbubbles in the water burst, the energy generated also has the effect of massaging the skin and improving blood circulation.

[0193] It can be understood that when the cleaning device is a faucet, the faucet can have a shower head structure or a venturi structure.

[0194] It can also be understood that when the cleaning device is a water gun, since the water gun is filled with the aforementioned gel material, when the water and the gel in the water gun react, a large number of micron and nano-sized bubbles will be generated in the water. When the water contains a large number of micron and nano-sized bubbles, it can also improve the cleaning effect on the surface of the object. When the microbubbles burst, the energy generated helps to clean the stains on the surface of the object.

[0195] In some embodiments of the present invention, the present invention provides a method for generating micro-nano bubbles, wherein the method for generating micro-nano bubbles is to allow water to flow through a gel material.

[0196] Specifically, the present invention relates to a method for generating micro / nano bubbles, which is simple and easy to implement. It only requires water to flow through a gel material. As the water flows through the gel material, its surface tension is reduced, making it easier for negative pressure to be drawn into the water near the gel, thus allowing air to enter and form microbubbles. When the water collides with the interface, it is more easily sheared into microbubbles, helping to prolong the bubble's existence time. When the water contains a large number of micro / nano-sized bubbles, it can enhance the cleaning effect on the skin and pores during bathing and facial cleansing. The energy generated when the microbubbles burst also massages the skin and improves blood circulation. Furthermore, when the water contains a large number of micro / nano-sized bubbles, it can also enhance the cleaning effect on object surfaces; the energy generated when the microbubbles burst also helps to remove stains from the object's surface.

[0197] The technical solution of the present invention will be further understood below with reference to specific embodiments.

[0198] Example 1

[0199] This embodiment prepares a gel material, the raw materials for which are:

[0200] PEG-32: 24 parts

[0201] PEG-150: 11 parts

[0202] PEG-450: 1 part,

[0203] Sodium hyaluronate: 8 parts

[0204] Dipotassium glycyrrhizate: 3 parts

[0205] PPG-28-Butyl alcohol polyether-35: 7 parts,

[0206] PEG-7 glyceryl cocoate: 4 parts

[0207] PEG-6 caprylic / capric triglyceride: 1 part

[0208] Tocopheryl acetate: 1 part

[0209] Fragrance: 8 parts

[0210] Citric acid: 10 parts

[0211] Sodium isoascorbate: 17 parts

[0212] 5 parts menthol lactate

[0213] The preparation method of the gel material includes the following steps:

[0214] Add polyethylene glycol PEG-32, PEG-150 and PEG-450 to a mixing pot, heat to 80℃~85℃ to completely melt them, and then continue to maintain this temperature.

[0215] Add sodium hyaluronate and its modified product menthol lactate, the soothing and anti-inflammatory agent dipotassium glycyrrhizate and tocopheryl acetate, and continue stirring for 30 min to 40 min until fully mixed, and keep warm at 60℃-65℃;

[0216] Add water-soluble oils PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate and PEG-6 caprylic / capric glyceride, and continue stirring for 10 to 20 minutes until fully mixed and kept warm at 60℃-65℃.

[0217] Add citric acid, sodium isoascorbate (a residual chlorine remover), and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold, and cool to form a gel material.

[0218] Example 2

[0219] This embodiment prepares a gel material, the raw materials for which are:

[0220] PEG-150: 36 parts

[0221] Sodium hyaluronate: 8 parts

[0222] Dipotassium glycyrrhizate: 3 parts

[0223] PPG-28-Butyl alcohol polyether-35: 12 parts,

[0224] Tocopheryl acetate: 1 part

[0225] Fragrance: 8 parts

[0226] Citric acid: 10 parts

[0227] Sodium isoascorbate: 17 parts

[0228] 5 parts menthol lactate

[0229] The preparation method of the gel material includes the following steps:

[0230] Add polyethylene glycol PEG-150 to a mixing pot and heat to 80℃~85℃ to completely melt it, then continue to maintain this temperature;

[0231] Add sodium hyaluronate and its modified product menthol lactate, the soothing and anti-inflammatory agent dipotassium glycyrrhizate and tocopheryl acetate, and continue stirring for 30 min to 40 min until fully mixed, and keep warm at 60℃-65℃;

[0232] Add water-soluble oil PPG-28-butanol polyether-35, continue stirring for 10 to 20 minutes until fully mixed, and keep warm at 60℃-65℃;

[0233] Add citric acid, sodium isoascorbate (a residual chlorine remover), and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold, and cool to form a gel material.

[0234] Example 3

[0235] This embodiment prepares a gel material, the raw materials for which are:

[0236] PEG-32: 38 parts

[0237] Sodium hyaluronate: 8 parts

[0238] Dipotassium glycyrrhizate: 3 parts

[0239] PEG-7 glyceryl cocoate: 10 parts

[0240] Tocopheryl acetate: 1 part

[0241] Fragrance: 8 parts

[0242] Citric acid: 10 parts

[0243] Sodium isoascorbate: 17 parts

[0244] 5 parts menthol lactate

[0245] The preparation method of the gel material includes the following steps:

[0246] Add polyethylene glycol PEG-32 to a mixing pot and heat it to 80℃~85℃ to completely melt it, and then continue to maintain it at this temperature;

[0247] Add sodium hyaluronate and its modified product menthol lactate, the soothing and anti-inflammatory agent dipotassium glycyrrhizate and tocopheryl acetate, and continue stirring for 30 min to 40 min until fully mixed, and keep warm at 60℃-65℃;

[0248] Add water-soluble PEG-7 glyceryl cocoate oil, continue stirring for 10 to 20 minutes until fully mixed, and keep warm at 60℃-65℃;

[0249] Add citric acid, sodium isoascorbate (a residual chlorine remover), and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold, and cool to form a gel material.

[0250] Comparative Example 1

[0251] In this comparative example, a gel material was actually prepared. The raw materials for preparing the gel material were:

[0252] PEG-32: 29 parts

[0253] PEG-150: 11 parts

[0254] PEG-450: 1 part,

[0255] Sodium hyaluronate: 8 parts

[0256] Dipotassium glycyrrhizate: 3 parts

[0257] PPG-28-Butyl alcohol polyether-35: 4 parts,

[0258] Tocopheryl acetate: 1 part

[0259] Fragrance: 8 parts

[0260] Citric acid: 10 parts

[0261] Sodium isoascorbate: 17 parts

[0262] 8 parts of menthol lactate

[0263] The preparation method of the gel material includes the following steps:

[0264] Add polyethylene glycol PEG-32, PEG-150 and PEG-450 to a mixing pot, heat to 80℃~85℃ to completely melt them, and then continue to maintain this temperature.

[0265] Add sodium hyaluronate and its modified product menthol lactate, the soothing and anti-inflammatory agent dipotassium glycyrrhizate and tocopheryl acetate, and continue stirring for 30 min to 40 min until fully mixed, and keep warm at 60℃-65℃;

[0266] Add water-soluble oil PPG-28-butanol polyether-35, continue stirring for 10 to 20 minutes until fully mixed, and keep warm at 60℃-65℃;

[0267] Add citric acid, sodium isoascorbate (a residual chlorine remover), and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold, and cool to form a gel material.

[0268] Comparative Example 2

[0269] In this comparative example, a gel material was actually prepared. The raw materials for preparing the gel material were:

[0270] PEG-32: 29 parts

[0271] PEG-150: 12 parts

[0272] Sodium hyaluronate: 10 parts

[0273] Dipotassium glycyrrhizate: 5 parts

[0274] Tocopheryl acetate: 1 part

[0275] Fragrance: 8 parts

[0276] Citric acid: 10 parts

[0277] Sodium isoascorbate: 17 parts

[0278] 8 parts of menthol lactate

[0279] The preparation method of the gel material includes the following steps:

[0280] Add polyethylene glycol PEG-32 and PEG-150 to a mixing pot and heat to 80℃~85℃ to completely melt them, then continue to maintain this temperature;

[0281] Add sodium hyaluronate and its modified form, menthol lactate, dipotassium glycyrrhizate (a soothing and anti-inflammatory agent), and tocopheryl acetate. Continue stirring for 30-40 minutes until fully mixed and keep warm at 60-65°C.

[0282] Add citric acid, sodium isoascorbate (a residual chlorine remover), and fragrance, and keep warm at 60℃-65℃. Stir until the material is uniform, pour into a mold, and cool to form a gel material.

[0283] Test Example 1

[0284] The gel materials prepared in Examples 1 and 2, and Comparative Examples 1 and 2, were respectively filled into filter cartridges, which had a columnar structure. After filling, water entered through one end of the filter cartridge at a flow rate of 5 L / min. After flowing through the gel material, the water flowed out from the other end of the filter cartridge. The residual chlorine and grease in the water after flowing through the gel material were tested. Each gel material was tested three times.

[0285] The standard for residual chlorine testing is GB / T5750.11-2006 "Standard Examination Methods for Drinking Water - Disinfectant Indicators".

[0286] The oil test is based on the standard TZHCA002-2018 "Test Method for Oil Control Efficacy of Cosmetics". The amount of sebum on the skin surface is measured by measuring the transparency of the oil-absorbing tape after it absorbs sebum.

[0287] The results of the residual chlorine test are shown in Table 1. The results of the oil test are shown in Table 2.

[0288] Table 1 Residual Chlorine Test Results

[0289]

[0290] Table 2. Results of oil and fat testing

[0291]

[0292] The test results in Tables 1 and 2 show that the addition of water-soluble oils increases the content of micro-nano bubbles in the water. When the water contains a large number of micro-nano bubbles, the cleansing effect when rinsing the skin is enhanced.

[0293] The test results in Tables 1 and 2 also show that the addition of water-soluble oils has no effect on the residual chlorine removal efficiency of the filter element. The residual chlorine removal efficiency is mainly related to the content of sodium isoascorbate.

[0294] Test Example 2

[0295] The bubble density and average particle size in the water flow passing through the gel materials prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were observed using an optical microscope and particle size analysis software. The results are shown in Table 3.

[0296] Table 3 Results of bubble density and particle size tests

[0297] Example 1 92,000 cells / ml <100μm Example 2 68,600 cells / ml <100μm Example 3 123,000 cells / ml <100μm Comparative Example 1 23,000 cells / ml <120μm Comparative Example 2 13400 cells / ml <140μm

[0298] As can be seen from the test results in Table 3, the gel material prepared in Example 3 has a high bubble density in water. Because polyethylene glycol PEG-32 in the raw materials has a low melting point, the gel material has a high dissolution concentration in water.

[0299] Optical micrographs of air bubbles in water flowing through the gel material prepared in Example 1 are shown below. Figure 1 As shown in the image. Optical micrographs of air bubbles in the water flowing through the gel material prepared in Comparative Example 1 are shown in the image. Figure 2 As shown. Comparison Figure 1 and Figure 2 It can be seen that in the water flowing through the gel material prepared in Example 1, the bubbles are uniform, dense, and numerous. In contrast, in the water flowing through the gel material prepared in Comparative Example 1, the bubbles are uneven in size and few in number.

[0300] The present invention has been described in detail above with reference to the embodiments. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A gel material, characterized in that, The raw materials for preparation, by weight, include: Polyethylene glycol: 15 to 40 parts; Crosslinking agent: 1.5 to 15 parts Water-soluble oils: 5 to 15 parts; The polyethylene glycol includes at least one of PEG-8, PEG-20, PEG-32, PEG-75, PEG-90, PEG-100, PEG-150, PEG-200, PEG-400, PEG-450, and PEG-800, the crosslinking agent is sodium hyaluronate, and the water-soluble oil is at least one of PPG-28-butanol polyether-35, PEG-7 glyceryl cocoate, and PEG-6 caprylic / capric glyceride.

2. The gel material according to claim 1, characterized in that, The raw materials also include at least one of the following: skin conditioning agents, water purification agents, citric acid, skin feel modifiers, and fragrances.

3. The gel material according to claim 2, characterized in that, The raw materials for preparation, by weight, include: Polyethylene glycol: 15 to 40 parts; Crosslinking agent: 1.5 to 15 parts Water-soluble oils: 5 to 15 parts Skin conditioning agent: 0.1 to 10 parts; Water purification agent: 15 to 30 parts; Citric acid: 0.5 to 20 parts; Skin feel modifier: 2 to 10 parts; Flavoring: 2 to 10 parts.

4. A method for preparing the gel material according to any one of claims 1 to 3, characterized in that, Includes the following steps: After heating and melting the polyethylene glycol, the crosslinking agent and water-soluble oil are added sequentially to obtain the gel material.

5. The method according to claim 4, characterized in that, The heating and melting temperature is 80℃~90℃.

6. A filter element, characterized in that, The filter element comprises the gel material according to any one of claims 1 to 3.

7. A cleaning device, characterized in that, The cleaning device includes the filter element as described in claim 6.

8. The cleaning apparatus according to claim 7, characterized in that, The cleaning device includes a shower head, faucet, or water gun.

9. A method for generating micro / nano bubbles, characterized in that, The method for generating the micro-nano bubbles is to allow water to flow through the gel material described in any one of claims 1 to 3.

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