Non-stick cooker and manufacturing method thereof

Abstract

The invention provides a non-stick cooker and a manufacturing method thereof. The non-stick cooker comprises a cooker base body and a non-stick coating formed on the cooker base body, the non-stick coating is formed by spraying a non-stick material, the non-stick material comprises a plurality of non-stick main bodies, each non-stick main body comprises porous wear-resistant microsphere particles and silicone oil capsules combined on the porous wear-resistant microsphere particles, and the silicone oil capsules are arranged on the porous wear-resistant microsphere particles. The non-stick material further comprises metal particles, and the multiple non-stick bodies are wrapped in the metal particles or the multiple non-stick bodies are evenly dispersed among the metal particles. According to the non-stick material provided by the embodiment of the invention, through testing, the properties of compressive strength, wear resistance, binding force and the like can be balanced, and the non-stick material has long-lasting non-stick property.

Description

Technical Field

[0001] This application relates to the field of kitchenware technology, specifically to a non-stick cookware and its manufacturing method. Background Technology

[0002] In the current cookware industry, to achieve non-stick properties for food, a liquid non-stick coating is typically formed by atomizing and spraying it onto the substrate surface. Existing liquid non-stick coatings are mainly based on fluoropolymers or ceramic coatings, offering good non-stick properties, but suffer from a relatively short lifespan. Furthermore, the atomization spraying process used for liquid non-stick coatings poses significant environmental pollution problems. In addition, cookware coatings formed from existing non-stick materials often fail to simultaneously possess properties such as wear resistance, adhesion, and long-lasting non-stick performance. Summary of the Invention

[0003] This application aims to at least solve the problem in the prior art or related technologies that cookware coatings formed by non-stick materials cannot simultaneously possess multiple performance characteristics.

[0004] To achieve the above objectives, a first aspect of this application provides a non-stick cookware, wherein the non-stick cookware includes a cookware substrate and a non-stick coating formed on the cookware substrate, wherein the non-stick coating is formed by spraying a non-stick material, the non-stick material includes a plurality of non-stick bodies, the non-stick bodies include porous wear-resistant microspheres and silicone oil capsules bonded to the porous wear-resistant microspheres, wherein the non-stick material also includes metal particles, the plurality of non-stick bodies being encapsulated inside the metal particles or the plurality of non-stick bodies being bonded between adjacent metal particles.

[0005] According to the non-stick cookware provided in the embodiments of this application, the silicone oil in the silicone oil capsules of the non-stick coating formed by the non-stick material can be slowly released to provide good non-stick performance of the non-stick coating. By filling the silicone oil capsules in the porous structure of porous wear-resistant microspheres, on the one hand, the porous wear-resistant microspheres can protect the silicone oil capsules from thermal decomposition; on the other hand, the porous wear-resistant microspheres can ensure the wear resistance of the coating formed by the non-stick material. In addition, the metal particles in the non-stick coating of the cookware formed by the non-stick material can form a good bond with the cookware substrate, thereby improving the adhesion between coatings, effectively preventing coating delamination, and further improving the service life of the non-stick coating. Therefore, the non-stick material according to this application can meet the cookware's requirement for durable non-stick properties. At the same time, the non-stick material does not produce harmful gases during the cookware manufacturing process, which can solve the environmental pollution problem caused by atomized spraying of liquid non-stick coatings.

[0006] In some embodiments, the silicone oil capsule is incorporated into the porous structure of the porous wear-resistant microspheres and onto the surface of the porous wear-resistant microspheres.

[0007] In these embodiments, on the one hand, the silicone oil content in the non-stick body can be guaranteed to ensure the non-stick effect of the non-stick material; on the other hand, due to the uniformity of the porous structure of the porous wear-resistant microsphere particles, the uniformity of the silicone oil in the non-stick body can be guaranteed.

[0008] In some embodiments, the weight ratio of the silicone oil capsule, the porous wear-resistant microspheres, and the metal particles in the non-stick material is 1:(0.5-1):(0.5-5).

[0009] In these embodiments, the weight ratio of silicone oil capsules, porous wear-resistant microspheres, and metal particles in the non-stick material helps to balance the wear resistance, non-stick properties, etc. of the non-stick material, thereby facilitating the improvement of the durable non-stick properties of the coating obtained from the non-stick material.

[0010] In some embodiments, the silicone oil capsule comprises a polysiloxane having a network structure and silicone oil adsorbed in the network structure.

[0011] In these embodiments, within the cookware, silicone oil molecules can be slowly released through the tiny pores of the mesh structure when needed, achieving its intended slow-release function. Furthermore, the mesh structure tightly encapsulates the silicone oil molecules, preventing them from directly contacting the external environment. For example, because the silicone oil is locked within the mesh structure, the structure effectively blocks heat transfer to the silicone oil molecules, reducing the risk of thermal decomposition and making them less susceptible to external temperature effects. This is particularly important for cookware, especially for products that require operation under high-temperature conditions (such as ovens, frying pans, and other kitchen utensils).

[0012] In some embodiments, the weight ratio of the silicone oil to the polysiloxane in the silicone oil capsule is (40-45):(25-45).

[0013] In these embodiments, the weight ratio of silicone oil particles to the network structure ensures the content of silicone oil, the main non-stick component, in the silicone oil capsule, thereby enabling the silicone oil capsule to exhibit excellent non-stick properties.

[0014] In some embodiments, the porous wear-resistant microspheres include at least one of silica hollow / porous microsphere powder, alumina hollow / porous microsphere powder, molybdenum disulfide hollow / porous microspheres, graphene hollow / porous microspheres, and glass hollow / porous microspheres.

[0015] In these embodiments, the aforementioned microspheres are suitable for cookware requiring abrasion resistance and have a porous structure that easily fills silicone oil capsules.

[0016] In some embodiments, the metal particles include at least one of titanium particles, titanium alloy particles, aluminum particles, aluminum alloy particles, iron particles, iron alloy particles, copper particles, and copper alloy particles.

[0017] In these embodiments, the aforementioned metal particles have better ductility and can be tightly bonded to the cookware substrate during the process of forming a non-stick coating using non-stick materials, thus ensuring the adhesion of the cookware coating.

[0018] In some embodiments, the silicone oil capsule includes at least one of methyl silicone oil capsules and hydroxyl silicone oil capsules.

[0019] In these embodiments, the silicone oils all possess good chemical stability and hydrophobic properties, which can meet the actual requirements of cookware products.

[0020] In some embodiments, the porous wear-resistant microspheres have a particle size of 5μm-65μm, thus providing a suitable specific surface area for the manufacture of non-stick substrates. Furthermore, during the manufacture of non-stick materials, the porous wear-resistant microspheres exhibit good flowability and dispersibility in the mixed slurry.

[0021] In some embodiments, the particle size of the metal particles is 5μm-65μm. Metal particles of suitable size ensure the stability of the formed non-stick material and guarantee a uniform distribution of metal particles within the non-stick material. This facilitates melting during the coating formation process from the non-stick material and enhances the bonding strength with the cookware substrate.

[0022] In some embodiments, the thickness of the non-stick coating is in the range of 30μm-200μm. A non-stick coating of appropriate thickness can ensure that the cookware has a good non-stick life and can ensure the adhesion between the coating and the substrate.

[0023] In some embodiments, the non-stick coating has a porous structure capable of storing oil, or the non-stick coating has a porous structure and / or non-stick particles on its surface.

[0024] In these embodiments, the non-stick coating has a porous structure capable of storing oil. When the non-stick coating comes into contact with grease, the grease can be stored in the porous structure. During use, the grease can be released from the pores to form a thin oil film, thereby ensuring the cookware remains non-stick. The non-stick coating may come into contact with grease at the time of manufacture or during the initial seasoning process. To further facilitate user use and avoid the hassle of seasoning, oleophilic non-stick particles can be filled into the porous structure and / or surface of the cookware at the time of manufacture, so that the non-stick coating has non-stick particles in its porous structure and / or surface. As an example, the oleophilic non-stick particles can be silicone oil or edible oil.

[0025] In some embodiments, the non-stick particles are silicone oil capsules, and the non-stick particles in the pores can be slowly released, which can extend the non-stick life of the cookware.

[0026] According to a second aspect of this application, a method for manufacturing a non-stick cookware is provided, wherein the manufacturing method includes:

[0027] Provide cookware base and non-stick material;

[0028] The non-stick material is thermally or coldly sprayed onto the surface of the cookware substrate to form a non-stick coating on the surface of the cookware substrate.

[0029] In some embodiments, the manufacturing method further includes:

[0030] The cookware substrate with a non-stick coating is immersed in a permeating liquid to fill the pore structure and / or surface of the non-stick coating with non-stick particles formed by the curing of the permeating liquid.

[0031] In these embodiments, by using an impregnation liquid to fill the porous structure of the non-stick coating with non-stick particles, the non-stick properties can be further optimized and the service life of the non-stick coating can be extended. At the same time, it can solve the problems of environmental burden and impact on operator health caused by atomized spraying. Attached Figure Description

[0032] The above and other objects and features of this application will become clearer from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0033] Figure 1 A schematic diagram of the structure of a silicone oil capsule provided according to an embodiment of this application is shown;

[0034] Figure 2 A schematic diagram of the structure of a non-adhesive body provided according to an embodiment of this application is shown;

[0035] Figure 3 A schematic diagram of the structure of a non-stick material according to an embodiment of this application is shown;

[0036] Figure 4 A schematic diagram of the structure of another non-stick material provided according to an embodiment of this application is shown.

[0037] Symbol Explanation

[0038] 10. Non-stick body; 11. Silicone oil capsule; 111. Silicone oil; 112. Mesh structure; 12. Porous wear-resistant microspheres;

[0039] 20. Metal particles; 30. Non-stick materials. Detailed Implementation

[0040] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be changed as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0041] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein, which will become clear upon understanding the disclosure of this application.

[0042] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0043] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teaching of the examples described herein, the first component, first assembly, first region, first layer, or first part referred to as the first component, first assembly, first region, first layer, or first part may also be referred to as the second component, second assembly, second region, second layer, or second part.

[0044] In the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to," or "mounted to" another element, the element may be directly "on" another element, directly "connected to," or "mounted to" the other element, or one or more other elements may be present in between. Conversely, when an element is described as being "directly on" another element, "directly connected to," or "directly mounted to" another element, no other elements may be present in between.

[0045] The terminology used herein is for the purpose of describing various examples only and is not intended to limit disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0046] The directional terms such as "upper," "lower," "top," "bottom," and "height direction" used in this application are all based on the orientation of the product when it is placed upright in normal use.

[0047] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains upon understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0048] Furthermore, in the description of the examples, detailed descriptions of well-known related components or functions will be omitted when it is believed that such detailed descriptions would lead to a vague interpretation of the invention.

[0049] Fluoropolymer coatings are common liquid non-stick coatings. However, non-stick coatings made with fluorine-based coatings are easily damaged by spatulas and are prone to aging or decomposition due to high temperatures during use. These problems have seriously affected the lifespan of coatings formed by fluorine-based coatings. Furthermore, perfluorooctanoic acid (PFOA) is an indispensable raw material for the synthesis of fluorine-based coatings, and as industry regulations on PFOA become increasingly stringent, the withdrawal of fluorine-based coatings from the non-stick cookware market is an inevitable trend.

[0050] Currently, no material with a lower surface energy than fluoropolymer coatings has been found, but the demand for non-stick coatings in the cookware industry remains constant. Ceramic coatings are now considered a potential replacement for fluoropolymer coatings. Ceramic coatings are liquid coatings with silicone oil as the main non-stick component. While the initial non-stick properties of the resulting coating may be close to those of fluoropolymer coatings, the silicone oil is quickly consumed by the high temperatures during cooking, causing the non-stick effect to be lost. Therefore, ceramic coatings have poor long-lasting non-stick properties.

[0051] In this field, the aforementioned liquid non-stick coatings are generally more suitable for forming coatings through atomized spraying, which allows for better distribution and control of the non-stick coating during the spraying process. However, atomized spraying of non-stick coatings presents significant environmental pollution problems. Specifically, during atomized spraying, the coating is atomized into tiny particles under high pressure. Not all of these particles adhere accurately to the surface of the object being coated; a considerable portion forms paint mist that disperses into the air. This not only wastes the coating but also pollutes the environment and poses a threat to the health of operators. Furthermore, liquid non-stick coatings typically contain organic solvents, which evaporate in large quantities during spraying, forming organic waste gases. These organic waste gases pollute the atmosphere, affect air quality, and may further lead to environmental problems such as photochemical smog.

[0052] With the development of the non-stick industry, solid spraying materials based on metals (e.g., iron, stainless steel, low-carbon steel, high-carbon steel, cast iron, and copper) or ceramics (e.g., titanium oxide, titanium nitride, titanium carbide, iron(II,III) oxide, iron oxide, ferrous oxide, aluminum oxide, chromium oxide, and nickel oxide) have gradually emerged. These materials can form non-stick coatings, the so-called "coating-free non-stick technology." Here, "coating-free" simply means that it does not use organic coatings such as fluorinated or ceramic coatings. While the coating formed by these spraying materials is wear-resistant, cookware with this coating only achieves a non-stick effect when oily, and its initial non-stick properties are poor. It usually requires modification with materials that have good non-stick properties, such as polysiloxanes or fluorinated materials, to meet the initial non-stick requirements of national standards. Furthermore, the non-stick properties of these materials decrease rapidly after wear, and residual polysiloxanes can have a counterproductive effect on non-stick properties, making the non-stick condition even worse than before modification.

[0053] Therefore, developing non-stick materials that combine excellent properties such as compressive strength, wear resistance, adhesion, long-lasting non-stickness, and environmental friendliness remains a challenge that needs to be addressed in this field.

[0054] According to a first aspect of this application, a method for manufacturing a non-stick material is provided, wherein the manufacturing method includes:

[0055] Step S101: Provide a dispersion of silicone oil in a polysiloxane network structure.

[0056] Step S102: A mixture comprising a dispersion and porous wear-resistant microspheres is formed. The mixture is then subjected to composite drying to form a non-stick matrix in which silicone oil capsules are bonded to the porous wear-resistant microspheres.

[0057] Step S103: A mixed slurry comprising non-stick substrates and metal particles is formed. The mixed slurry is then subjected to composite drying to form a non-stick material in which multiple non-stick substrates are wrapped inside the metal particles or where multiple non-stick substrates are bonded between adjacent metal particles.

[0058] In this embodiment, composite drying may include mixed drying or combined drying. Mixed drying refers to a drying process performed simultaneously with mixing, utilizing a combination of convection, thermal radiation, and other effects to dry and solidify wet slurry. As an example, a ribbon dryer can be used to achieve the composite drying process. In a ribbon dryer, the material is turned by spiral blades and continuously comes into contact with hot air during the mixing process, thereby achieving material drying.

[0059] As an example, during the drying process, the mixture is continuously rinsed with cold water in the roller drum to maintain a temperature of 25°C-35°C, while the slurry is maintained at 40°C-50°C. These temperature selections ensure uniform mixing and drying of all materials, and also prevent the silicone oil from evaporating during the process.

[0060] According to the non-stick material manufacturing method provided in this application, by performing composite drying on a mixture including a dispersion and porous wear-resistant microspheres, a non-stick substrate with silicone oil capsules bonded to the porous wear-resistant microspheres can be obtained. This non-stick substrate not only exhibits excellent non-stick properties due to the silicone oil capsules but also exhibits good wear resistance due to the porous wear-resistant microspheres. In this case, the non-stick substrate can possess a long-lasting non-stick property. By performing composite drying on a slurry including the non-stick substrate and metal particles, a non-stick material can be formed in which multiple non-stick substrates are encapsulated inside the metal particles or where multiple non-stick substrates are uniformly dispersed between the metal particles. Using this non-stick material to form a non-stick coating for cookware, the metal particles can form a good bond with the cookware substrate, thereby improving the adhesion between coatings, effectively preventing coating delamination, and further extending the service life of the non-stick coating. Furthermore, since the non-stick material of this application is a solid material, it is not limited to atomized spraying. For example, cold spraying or hot spraying can be used to form the coating, thereby avoiding various problems caused by atomized spraying.

[0061] The following will describe in detail the manufacturing method of the non-stick material according to this application.

[0062] Formation of dispersion

[0063] The inventors discovered that silicone oil has difficulty penetrating porous wear-resistant microspheres, primarily due to the interaction and property differences between the silicone oil and the microspheres. Specifically, silicone oil is mainly composed of silicon and oxygen atoms, exhibiting high chemical stability and hydrophobicity. Porous wear-resistant microspheres, on the other hand, are solid materials with a porous structure, possessing large pore sizes and specific surface areas, and are commonly used for adsorption. When attempting to add silicone oil to porous wear-resistant microspheres, its hydrophobic nature makes it difficult to form a stable wetting interface with the microsphere surface. This means that silicone oil cannot effectively penetrate the pores of the microspheres, thus failing to form a stable distribution within them. Therefore, to effectively introduce silicone oil into porous wear-resistant microspheres, the inventors discovered that by first dispersing silicone oil in a polysiloxane with a network structure, and then using this dispersion to impregnate the subsequent porous wear-resistant microspheres, the silicone oil can bind within the microspheres to form a non-sticky matrix.

[0064] According to some embodiments of this application, polysiloxanes can be formed by hydrolysis and condensation of siloxane monomers. The polysiloxanes can be formed from several different types of siloxane monomers. For example, the siloxane monomers may include at least one of trifunctional silanes, difunctional silanes, and monofunctional silanes. In trifunctional silanes, each silicon atom is attached to three organic groups and one hydrolyzable group (such as methoxy or ethoxy). Specifically, trifunctional silanes include at least one of methyltrimethoxysilane (CH3Si(OCH3)3) and methyltriethoxysilane (CH3Si(OC2H5)3). In difunctional silanes, each silicon atom is attached to two organic groups and two hydrolyzable groups. Specifically, difunctional silanes include at least one of dimethyldimethoxysilane ((CH3)2Si(OCH3)2) and dimethyldiethoxysilane ((CH3)2Si(OC2H5)2). In monofunctional silanes, each silicon atom is attached to one organic group and three hydrolyzable groups. Specifically, monofunctional silanes include at least one of trimethylmethoxysilane ((CH3)3SiOCH3) and triethylethoxysilane ((C2H5)3SiOC2H5). In the process of forming polysiloxanes through hydrolysis and condensation reactions of siloxane monomers, the hydrolysis reaction converts hydrolyzable groups (such as methoxy or ethoxy) into hydroxyl groups (-OH), while the condensation reaction forms silicon-oxygen-silicon bonds through dehydration or de-alcoholization between silanol groups, thereby constructing the main chain of the polysiloxane.

[0065] According to other embodiments of this application, the polysiloxanes according to this application can also be obtained commercially. As an example, the polysiloxane may preferably be a fluorinated polysiloxane, which has a low surface energy and can further ensure the overall non-stick properties of the silicone oil capsule. As an example, the fluorinated polysiloxane may include side-chain fluorinated polysiloxanes, end-group fluorinated polysiloxanes, and block fluorinated polysiloxanes.

[0066] It should be noted that this application does not impose excessive limitations in this regard. Those skilled in the art can select suitable siloxane monomers to form the polysiloxane according to this application under the guidance of this application, or they can select suitable polysiloxanes according to actual needs. As an example, the viscosity of the polysiloxane is within a preset range, thus ensuring the dispersibility of the silicone oil in the mixed emulsion. As an example, the viscosity of the polysiloxane tested with a #2 viscosity cup is in the range of 8s-20s. As an example, the weight ratio of silicone oil to polysiloxane can be (40-45):(25-45).

[0067] The dispersion according to this application will be described below using the example of forming polysiloxanes through hydrolysis and condensation of siloxane monomers.

[0068] According to this application, such as Figure 1 As shown, the silicone oil capsule includes a network structure 112 and liquid silicone oil 111 locked within the network structure 112 of polysiloxane. The network structure is formed by the hydrolysis and solidification of siloxane monomers. Specifically, when the siloxane monomers come into contact with water, their hydrolyzable groups (such as methoxy or ethoxy groups) are converted into hydroxyl groups (-OH), which then form a three-dimensional network structure through a condensation reaction. The network structure has a large number of pores and surface area, providing a stable carrier for the liquid silicone oil, allowing it to maintain its performance under various environmental conditions. Simultaneously, the network structure itself also possesses good chemical and thermal stability. As an example, the liquid silicone oil is adsorbed and anchored in the pores and / or surface of the network structure. By locking the silicone oil within the network structure, a sustained-release effect of the silicone oil can be achieved, and the decomposition of the silicone oil due to direct heating can be avoided. When the silicone oil capsule comes into contact with the external environment, the liquid silicone oil can be gradually released from the network structure, thereby exerting its lubricating, waterproof, and anti-stick properties.

[0069] In step S101, a dispersion of silicone oil in a polysiloxane network structure is provided. As an example, the step of forming the dispersion includes: providing a mixed emulsion comprising silicone oil, a siloxane monomer, and water. In an exemplary embodiment, the weight ratio of silicone oil, siloxane monomer, and water is (40-45):(45-50):(2-10). The mixed emulsion is mixed by stirring or mechanical dispersion, during which the siloxane monomer and water undergo hydrolysis. During hydrolysis, condensation reactions occur between siloxane molecules, generating a polysiloxane with a network structure, wherein the network structure is a three-dimensional network structure. As the above reaction proceeds, the silicone oil gradually disperses in the network structure of the polysiloxane formed by the hydrolysis of the siloxane monomer, forming a dispersion of silicone oil dispersed in the polysiloxane network structure. Thus, a subsequent composite drying process of the mixed emulsion can form silicone oil capsules locked in the network structure.

[0070] In an exemplary embodiment, the silicone oil can be at least one of methyl silicone oil and hydroxyl silicone oil. All of the above silicone oils possess good chemical stability and hydrophobic properties, meeting the practical requirements of cookware. It should be noted that when selecting a mixture of methyl silicone oil and hydroxyl silicone oil, this application does not limit the mixing ratio; those skilled in the art can mix them in suitable proportions based on their respective advantages.

[0071] In some embodiments, the silicone oil comprises, by weight percentage, 20%-30% low molecular weight silicone oil, 40%-60% medium molecular weight silicone oil, and 20%-30% high molecular weight silicone oil, wherein the low molecular weight silicone oil has a molecular weight between 500 and 1000, the medium molecular weight silicone oil has a molecular weight between 3000 and 6000, and the high molecular weight silicone oil has a molecular weight between 12000 and 30000.

[0072] In these embodiments, high molecular weight silicone oils bond more firmly to the porous structure formed by the accumulation of wear-resistant particles, resulting in a slower release rate. Low molecular weight silicone oils exhibit better free mobility, thus providing better non-stick properties. Medium molecular weight silicone oils balance free mobility and strong bonding. Therefore, by combining low, medium, and high molecular weight silicone oils, the possibility of silicone oil entering the porous microspheres is further increased. Furthermore, silicone oils with different bonding strengths can be continuously released at various stages of use, achieving a better non-stick effect. As an example, the bonding force between the silicone oil and the porous microspheres is approximately 5 MPa-10 MPa. Such a bonding force ensures the continuous release of silicone oil, preventing premature or inability to release.

[0073] According to this application, the hydrolysis reaction of siloxane monomers can be promoted by a catalyst. As an example, the catalyst includes acids and bases, which can lower the activation energy of the hydrolysis reaction and increase the reaction rate. As an example, the weak acid can be an organic acid, specifically, the organic acid can include at least one of formic acid, acetic acid, citric acid, and oxalic acid. In an exemplary embodiment, the weight ratio of silicone oil, siloxane monomer, water, and organic acid is (40-45):(45-50):(2-10):(0.5-1).

[0074] In some embodiments, the mixed emulsion further includes a cationic surfactant. The cationic surfactant enables the silicone oil and water to form an emulsion, stabilizes the emulsion morphology, reduces the cohesive forces between silicone oil molecules, and lowers the interfacial tension between silicone oil and water, making the silicone oil easier to emulsify and disperse. This further improves the dispersibility of the silicone oil in the mixed emulsion. As an example, the cationic surfactant is an organic quaternary ammonium salt cationic surfactant. Specifically, the organic quaternary ammonium salt cationic surfactant may include at least one of hexadecyltrimethyl quaternary ammonium bromide, octadecyldimethylbenzyl quaternary ammonium chloride, benzalkonium chloride, and benzalkonium bromide.

[0075] In some embodiments, the mass ratio of silicone oil, siloxane monomer, cationic surfactant, water and organic acid can be (40-45):(45-50):(4-4.5):(2-10):(0.5-1).

[0076] Form a non-sticky body

[0077] According to this application, in step S102, a mixture comprising a dispersion and porous wear-resistant microspheres is formed, and the mixture is subjected to composite drying to form a non-sticky matrix in which silicone oil capsules are bonded to the porous wear-resistant microspheres.

[0078] In this step, the porous wear-resistant microspheres have a porous structure. A dispersion of silicone oil adheres to the porous structure and surface of the porous wear-resistant microspheres. This allows for the formation of a non-stick substrate with silicone oil capsules bonded to the porous wear-resistant microspheres through composite drying. For example, silicone oil is adsorbed or bonded to the porous structure and surface of the porous wear-resistant microspheres. Therefore, the cookware coating formed with this non-stick substrate allows the silicone oil in the silicone oil capsules to be continuously released during use, ensuring the cookware's long-lasting non-stick properties.

[0079] In a preferred embodiment, the porous wear-resistant microspheres include at least one of ceramic-based porous wear-resistant microspheres, polymer-based porous wear-resistant microspheres, glass microspheres, and composite porous wear-resistant microspheres. These microspheres are suitable for the wear resistance requirements of cookware and possess a porous structure that easily fills silicone oil capsules.

[0080] In some embodiments, the porous wear-resistant microspheres have a hollow internal structure, which, compared to porous wear-resistant microspheres that are merely porous, provides higher surface tension and higher adsorption capacity, allowing the microsphere surface to tightly adsorb the dispersion including silicone oil. Furthermore, the hollow internal structure provides ample space for the silicone oil capsules, enabling the silicone oil dispersion to adsorb onto the microsphere surface and penetrate into the hollow internal structure, forming a structure uniformly filled with silicone oil. This structure allows for slow release of the silicone oil, resulting in better durability and effectively extending the non-stick life of non-stick cookware.

[0081] According to this application, the step of forming a mixture comprising a dispersion and porous wear-resistant microspheres includes providing a dispersion of silicone oil dispersed in a network structure and porous wear-resistant microspheres, and mixing the dispersion and porous wear-resistant microspheres by means of stirring or mechanical dispersion to form a mixture. In an exemplary embodiment, the weight ratio of the dispersion to the porous wear-resistant microspheres is (40-60):(30-40).

[0082] According to this application, porous wear-resistant microspheres include at least one of the following: silica hollow / porous microsphere powder, alumina hollow / porous microsphere powder, molybdenum disulfide hollow / porous microspheres, graphene hollow / porous microspheres, and glass hollow / porous microspheres. All of the above-mentioned porous wear-resistant microspheres belong to the category of non-metallic ceramic materials. Among them, silica hollow / porous microsphere powder and alumina hollow / porous microsphere powder belong to ceramic-based porous wear-resistant microspheres and possess good thermal stability, chemical stability, and wear resistance. Microspheres formed from polymeric materials, such as nylon and polytetrafluoroethylene (PTFE), belong to polymer-based porous wear-resistant microspheres and possess excellent wear resistance and self-lubricating properties. Molybdenum disulfide (MoS2) hollow / porous microspheres belong to other types of hollow / porous materials, and their porous microsphere form may have better lubrication effects and a lower coefficient of friction. Hollow / porous graphene microspheres possess extremely high strength and excellent electrical and thermal conductivity. Their porous microsphere form may offer unique performance and application prospects.

[0083] In some embodiments, the particle size of the porous wear-resistant microspheres can be in the range of 5μm-65μm. If the particle size of the porous wear-resistant microspheres is too small, the microspheres are prone to agglomeration (difficult to disperse), resulting in poor dispersion of silicone oil in the final non-stick substrate, thus leading to poor uniformity of the non-stick coating formed by the non-stick material. If the particle size of the porous wear-resistant microspheres is too large, the surface area ratio of the ceramic particles decreases, making it difficult to adsorb silicone oil capsules, resulting in insufficient silicone oil content in the final non-stick substrate, which affects the non-stick performance of the non-stick cookware formed by the non-stick material.

[0084] In some embodiments, the mixture further includes a dispersant and a solvent. The dispersant may be an inorganic dispersant with affinity groups. For example, inorganic dispersants with affinity groups include at least one of silicates (water glass) and alkali metal phosphates (sodium tripolyphosphate, sodium hexametaphosphate, and sodium pyrophosphate, etc.). The solvent may be isopropanol. For example, the weight ratio of the dispersion, porous wear-resistant microspheres, dispersant, and solvent is (40-60):(30-40):(5-10):(5-25).

[0085] According to this application, during the composite drying of the mixture, heat is generated by inter-particle shearing, which ultimately leads to the continuous evaporation of the solvent, eventually transforming it into a solid state. Furthermore, because the pores of the porous, wear-resistant microspheres are filled, they are less prone to breakage during the mixing and tumbling process of composite drying.

[0086] As an example, the mixture can be placed in a drying device, such as a ribbon dryer or a composite dryer, where it is mixed by the tumbling action of spiral blades and simultaneously dried by contact with hot air. This allows the mixture to continuously replenish the porous wear-resistant microspheres during the mixing process, ultimately drying into a solid, non-stick matrix. It should be noted that in the final non-stick matrix, the organic acids, surfactants, dispersants, and solvents in the dispersion will decompose or evaporate during the subsequent high-temperature curing, forming a non-stick matrix with silicone oil capsules bonded to the porous wear-resistant microspheres. These silicone oil capsules consist of silicone oil attached to a polysiloxane network structure.

[0087] According to this application, in the non-stick body, the silicone oil capsule will endow the non-stick body with unique lubrication and non-stick properties, while the porous wear-resistant microsphere particles, due to the excellent high temperature resistance, corrosion resistance and stability of the ceramic microspheres themselves, the non-stick body (modified hollow / porous ceramic microspheres) not only maintains the performance advantages of the original microspheres, but also can achieve the purpose of long-lasting non-stick cookware by means of the adsorption and slow release effect of the silicone oil capsule.

[0088] Forming non-stick materials

[0089] According to this application, in step S103, a mixed slurry comprising a non-stick body and metal particles is formed, and the mixed slurry is subjected to composite drying to form a non-stick material in which metal particles are wrapped around the outside of the non-stick body or uniformly dispersed in the non-stick body.

[0090] In this step, metal particles are added to the non-stick substrate to form a mixed slurry. Then, through a composite drying process, the metal particles are either coated on the outside of the non-stick substrate or uniformly dispersed within it. As an example, the weight ratio of the non-stick substrate to the metal particles in the mixed slurry can be (1):(0.5-5).

[0091] According to this application, the composite drying of the mixed slurry can be carried out by ball milling. During the composite drying process, the shear between particles will generate heat, which will eventually cause the solvent to evaporate continuously and eventually turn into a solid.

[0092] As an example, a mixture of non-stick substrate (modified hollow microsphere ceramic particles) and metal powder can be placed in a planetary ball mill at a mass ratio of 1:(0.5-5) and wet-mixed with a volatile organic solvent (e.g., anhydrous ethanol) for 8-10 hours. The metal powder has a particle size of 5 μm-65 μm and can be at least one of titanium and its alloys, aluminum and its alloys, iron and its alloys, and copper and its alloys. The grinding balls are zirconia balls, with a mass ratio of grinding balls to the mixture of 5:1-3:1 and a volume ratio of grinding balls to the mixture of 3:1-3:2. During the process, anhydrous ethanol can be added as a coolant and wetting agent, and the temperature is maintained at 40°C-50°C until the abrasive dries after 8-10 hours. The dried mixture is then placed in an oven at 90°C-100°C for 2-4 hours to obtain the non-stick material according to this application. In the final non-stick material, the metal particles will combine with the non-stick substrate.

[0093] According to this application, the content of the non-stick matrix is ​​greater than that of the metal particles, approximately twice the weight of the metal particles. Under this quantity and the particle size limitation selected in this application, when the particle size of the non-stick matrix is ​​greater than that of the metal particles, the particle size of the metal particles is relatively small, and the specific surface area is relatively large, making it easier to adsorb onto the surface of the non-stick matrix to form a coating layer. Thus, it is possible to form a non-stick material in which multiple non-stick matrices are wrapped inside the metal particles. When the particle size of the non-stick matrix is ​​equal to or smaller than that of the metal particles, it is understood that the particle size of the metal particles is relatively large, and the specific surface area is relatively small. The two are easy to mix, thereby forming a non-stick material in which multiple non-stick matrices are bonded between adjacent metal particles.

[0094] According to this application, the particle size of the metal particles is 5μm-65μm. If the particle size of the metal particles is too small, there is a risk of high-temperature explosion during grinding. If the particle size of the metal particles is too large, the metal particles are prone to accumulating after collision to form large particles. The non-stick coating formed by subsequent spraying of non-stick materials is prone to defects such as large pores and poor density.

[0095] The following will combine Figures 1 to 4 The present application will now introduce the non-stick materials provided in the embodiments of this application.

[0096] According to the second aspect of this application, a non-stick material is provided for use in cookware, wherein the non-stick material 30 is a solid material, such as... Figures 2 to 4 As shown, it includes multiple non-stick bodies 10, each non-stick body 10 including porous wear-resistant microspheres 12 and silicone oil capsules 11 bonded to the porous wear-resistant microspheres 12. The non-stick material also includes metal particles 20. The multiple non-stick bodies 10 are wrapped inside the metal particles 20 or uniformly dispersed between the metal particles 20.

[0097] It should be noted that the silicone oil capsule 11 according to this application is bonded to the porous wear-resistant microsphere particles 12 with a predetermined bonding force. For example, the predetermined bonding force can be 5MPa-10MPa. This prevents the silicone oil capsule 11 from detaching from the porous wear-resistant microsphere particles 12 when the non-stick substrate is mixed with the metal particles, thus avoiding any impact on the overall performance of the non-stick material. Furthermore, the liquid silicone oil in the silicone oil capsule 11 is locked within the polysiloxane network structure. Therefore, the silicone oil in the non-stick coating formed by the non-stick material can be slowly released from the non-stick coating, resulting in superior and durable non-stick performance.

[0098] In the accompanying drawings of this application, different colors are used to represent different areas only to distinguish the various parts (silicone oil capsule 11, porous wear-resistant microspheres 12, and metal particles 20), and do not represent the actual color of the materials as shown in the drawings. As an example, the silicone oil in the silicone oil capsule is typically colorless (or pale yellow), not the color shown in the drawings. Figure 1 The black color shown.

[0099] According to the non-stick material provided in this application embodiment, by filling silicone oil capsules into the porous structure of porous wear-resistant microspheres, the porous wear-resistant microspheres can, on the one hand, protect the silicone oil capsules from thermal decomposition, and on the other hand, ensure the wear resistance of the coating formed by the non-stick material, allowing the silicone oil in the silicone oil capsule 11 to be released slowly, thus providing the non-stick material with good non-stick properties. Furthermore, by forming a non-stick coating for cookware with the non-stick material, the porous wear-resistant microspheres ensure the wear resistance of the coating, and the metal particles 20 can form a good bond with the cookware substrate, thereby improving the adhesion between coatings, effectively preventing coating delamination, and further improving the service life of the non-stick coating. Therefore, the non-stick material according to this application can meet the cookware's requirements for wear resistance, adhesion, and durable non-stick properties. At the same time, the non-stick material does not produce harmful gases during cookware manufacturing, thus solving the environmental pollution problem caused by atomized spraying of liquid non-stick coatings.

[0100] According to this application, porous wear-resistant microspheres typically have a small particle size, a large specific surface area, and a porous structure. The porous structure provides space for the storage of silicone oil capsules, and these pores also help to improve the surface roughness of the porous wear-resistant microspheres, which is conducive to the adhesion of silicone oil capsules to their surface. This enables the formation of a non-stick matrix in which silicone oil capsules are bonded to both the surface of the porous wear-resistant microspheres and the porous structure.

[0101] In some embodiments, the porous wear-resistant microspheres are porous ceramic microspheres. The porous ceramic microspheres possess a certain adsorption capacity, enabling the adsorption of a dispersion comprising silicone oil and polysiloxane into the porous wear-resistant microspheres during the manufacturing process of the non-stick substrate. This results in a non-stick substrate with silicone oil encapsulated within the porous structure of the microspheres and on the surface of the microspheres. In this case, a certain amount of silicone oil is locked within the non-stick substrate. As an example, the weight of the silicone oil in the non-stick substrate accounts for 50%-60% of the total weight of the non-stick substrate.

[0102] In other embodiments, the porous wear-resistant microspheres are hollow porous wear-resistant microspheres. Hollow porous wear-resistant microspheres have a stronger adsorption capacity, enabling more of the dispersion including silicone oil and polysiloxane to adhere to the porous wear-resistant microspheres during the manufacturing process of the non-stick matrix, thereby allowing the non-stick matrix to retain a greater amount of silicone oil. As an example, in the non-stick matrix, the weight of silicone oil accounts for 55%-65% of the total weight of the non-stick matrix.

[0103] According to this application, the porous wear-resistant microspheres have a particle size of 5μm-65μm. Thus, the porous wear-resistant microspheres have a suitable specific surface area, which facilitates the manufacture of non-stick substrates. In addition, during the manufacture of non-stick materials, the porous wear-resistant microspheres have good flowability and dispersibility in the mixed slurry.

[0104] According to this application, a silicone oil capsule refers to a special capsule containing silicone oil, with the silicone oil located entirely within the capsule. Silicone oil capsules include at least one of methyl silicone oil capsules and hydroxyl silicone oil capsules. In the silicone oil capsule, silicone oil with good lubricity and chemical stability is the main component, while other components provide a framework for silicone oil adhesion. As an example, the framework can be a mesh structure, preferably a three-dimensional mesh structure. Specifically, the mesh structure is formed from polysiloxane with a mesh structure, and the weight ratio of silicone oil particles to the mesh structure is (44-50):(25-45). This translates to a silicone oil content of approximately 49%-66% in the silicone oil capsule, with the remainder being the polysiloxane mesh structure. The silicone oil capsule ensures that the silicone oil is slowly released during the use of the cookware, providing a non-stick surface for the cookware.

[0105] In some embodiments, the silicone oil capsule includes at least one of methyl silicone oil capsules and hydroxyl silicone oil capsules.

[0106] In these embodiments, the silicone oils all possess good chemical stability and hydrophobic properties, which can meet the actual requirements of cookware products.

[0107] In some embodiments, the silicone oil capsule includes a mesh structure and silicone oil attached to the mesh structure. The mesh structure is formed by the hydrolysis and solidification of siloxane monomers. In the cookware, silicone oil molecules can be slowly released through the tiny pores of the mesh structure when needed, achieving its intended slow-release function. Furthermore, the mesh structure tightly encapsulates the silicone oil molecules, preventing them from directly contacting the external environment. For example, because the silicone oil is locked within the mesh structure, the mesh structure effectively blocks heat transfer to the silicone oil molecules, reducing the risk of thermal decomposition and making them less susceptible to external temperature effects. This is particularly important for cookware, especially for products that require use under high-temperature conditions (such as ovens, frying pans, etc.).

[0108] In some embodiments, the weight ratio of silicone oil particles to the network structure is (44-50):(25-45).

[0109] In these embodiments, the weight ratio of silicone oil particles to the network structure ensures the content of silicone oil, the main non-stick component, in the silicone oil capsule, thereby enabling the silicone oil capsule to exhibit excellent non-stick properties.

[0110] According to this application, the metal particles are particles of a metallic material, specifically, particles of a metallic material with a certain degree of ductility. In some embodiments, the ductility of the metal is expressed as elongation; a higher elongation indicates better ductility of the material. As an example, the elongation of the metallic material in the metal particles can be in the range of 6%-30%.

[0111] Specifically, the metal particles may include at least one of titanium particles, titanium alloy particles, aluminum particles, aluminum alloy particles, iron particles, iron alloy particles, copper particles, and copper alloy particles. These metal particles possess excellent ductility and, during the process of forming a non-stick coating on cookware using non-stick materials, can bond tightly to the cookware substrate, ensuring the adhesion of the coating.

[0112] According to this application, the particle size of the metal particles is 5μm-65μm. Metal particles of suitable size ensure the stability of the formed non-stick material and guarantee a uniform distribution of metal particles within the non-stick material. This facilitates melting during the coating formation process from the non-stick material and enhances the bonding strength with the cookware substrate.

[0113] According to this application, the porous wear-resistant microspheres have a near-spherical structure. During the manufacturing of the non-stick substrate, the dispersion of silicone oil and polysiloxane readily flows and disperses within the porous wear-resistant microspheres with the near-spherical structure. In the manufacturing of non-stick materials, if the metal particles have a near-spherical structure, this will facilitate a tighter bond between the non-stick substrate and the metal particles. The near-spherical structure possesses characteristics such as high sphericity, good flowability, and a narrow particle size distribution, which will help achieve a tighter and more uniform bond, and through close-packing of spherical particles, a non-stick material with a particle packing structure is formed.

[0114] The non-stick material according to this application is granular, with the final non-stick material having a particle size of 5μm-200μm. The particle size affects the performance of the non-stick coating. Specifically, on the one hand, the particle size affects the surface roughness and gloss of the non-stick coating, thus affecting its non-stick properties. On the other hand, a suitable particle size range helps to form a uniform and dense coating during the spraying process, thereby improving the stability and durability of the coating.

[0115] According to this application, the non-stick material has a spherical or near-spherical structure. During the process of spraying the non-stick material to form a non-stick coating, the resulting non-stick coating can be effectively guaranteed to have suitable porosity through a dense packing of spherical particles. As an example, the porosity of the non-stick coating can be between 2% and 10%.

[0116] According to some embodiments of this application, multiple non-stick substrates are encapsulated within an outer coating formed by the accumulation of metal particles. This ensures that the metal material in the non-stick material maintains good adhesion to the substrate during the non-stick coating process. Simultaneously, the metal particles can also serve as a thermally conductive medium, improving the thermal conductivity of the non-stick coating formed from the non-stick material.

[0117] According to some other embodiments of this application, multiple non-stick substrates are uniformly dispersed between the metal particles, thereby ensuring good bonding between the non-stick coating formed by the non-stick material and the substrate, and ensuring the durability of the non-stick coating formed by the non-stick material.

[0118] In these embodiments, two non-stick materials with different structures are formed by controlling the difference in particle size. In this way, the appropriate non-stick material can be selected based on the actual situation. In the case of high wear resistance, a non-stick material in which multiple non-stick bodies are uniformly dispersed between the metal particles can be selected; while in the case of higher mechanical strength and uniformity, a non-stick material in which multiple non-stick bodies are wrapped inside the metal particles can be selected.

[0119] According to this application, in the non-stick substrate, the weight ratio of silicone oil capsules to porous wear-resistant microspheres is (40-60):(30-40). In the non-stick material, the weight ratios of silicone oil capsules, porous wear-resistant microspheres, and metal particles are (1):(0.5-1):(0.5-5), respectively. In the non-stick material, the weight ratio of silicone oil capsules, porous wear-resistant microspheres, and metal particles helps to balance the wear resistance, non-stick properties, etc., of the non-stick material, thereby facilitating the improvement of the durable non-stick properties of the coating obtained from the non-stick material.

[0120] According to a third aspect of this application, the cookware includes a cookware substrate and a non-stick coating formed on the cookware substrate, wherein the non-stick coating is made of a non-stick material.

[0121] In this embodiment of the application, the cooking utensils can be pots and pans, wherein the pots include frying pans, rice cooker inner pots or pressure cooker inner pots, and the baking pans can be oven baking pans.

[0122] In some embodiments, the non-stick coating has a porous structure capable of storing oil; or the non-stick coating has a porous structure and / or non-stick particles on its surface.

[0123] In these embodiments, the non-stick coating has a porous structure capable of storing oil. When the non-stick coating comes into contact with grease, the grease can be stored in the porous structure. During use, the grease can be released from the pores to form a thin oil film, thus ensuring the cookware remains non-stick. The non-stick coating can come into contact with grease either during manufacturing or during the initial seasoning process. To further facilitate user use and avoid the hassle of seasoning, oleophilic non-stick particles can be filled into the porous structure and / or surface of the cookware at the time of manufacture, so that the non-stick coating has non-stick particles in its porous structure and / or surface. As an example, the oleophilic non-stick particles can be silicone oil or edible oil.

[0124] In some embodiments, the non-stick particles are silicone oil capsules, and the non-stick particles in the pores can be slowly released, which can extend the non-stick life of the cookware.

[0125] The method for manufacturing a non-stick coating will be described in detail below.

[0126] According to a fourth aspect of this application, a method for manufacturing a non-stick cookware is provided, wherein the manufacturing method includes:

[0127] Step S101: Provide the cookware base.

[0128] Step S102: Provide a non-stick material.

[0129] Step S103: Apply non-stick material by hot or cold spraying onto the surface of the cookware substrate to form a non-stick coating on the surface of the cookware substrate.

[0130] Provide cookware base

[0131] According to this application, the cookware substrate can be made of commonly used materials. For example, the material can be stainless steel, titanium, aluminum, titanium alloys, aluminum alloys, and composite materials formed from the above materials. The cookware substrate can have a shape corresponding to its function; for example, when the non-stick cookware is a non-stick pan, the cookware substrate can have a conventional pan shape.

[0132] According to this application, the cookware substrate can be a substrate that has undergone surface alkaline washing to remove oil, drying, and sandblasting treatment, and the substrate surface has a certain roughness. In an exemplary embodiment, the roughness of the substrate surface is in the range of Ra value between 4 μm and 6 μm.

[0133] Provide non-stick materials

[0134] In the embodiments of this application, the non-stick material is the non-stick material according to the above embodiments.

[0135] Form a non-stick coating

[0136] According to this application, the non-stick coating can at least partially cover the inner surface of the substrate, meaning that the non-stick coating can cover the bottom surface or the entire inner surface of the cookware substrate. The non-stick coating is formed by thermal spraying or cold spraying of the non-stick material provided in the embodiments of this application, thereby having an improved non-stick life.

[0137] In an exemplary embodiment, thermal spraying specifically refers to plasma spraying. The process parameters for plasma spraying can be: powder feed rate 60g / min-100g / min; spraying distance 100mm-150mm; arc current 350A-400A; hydrogen pressure 0.2MPa-0.4MPa; voltage 30V-40V; hydrogen flow rate 6L / min-15L / min; argon pressure 2.5MPa-4.0MPa; argon flow rate 1000L / min-1500L / min; spraying angle 45°-80°; and workpiece temperature at room temperature.

[0138] In an exemplary embodiment, the parameters of the cold spraying process can be as follows: the cold spraying carrier gas is nitrogen, the carrier gas pressure is 10MPa-15MPa, the preheating temperature of the modified spraying material powder is 250℃-350℃, the spraying distance is 25mm-35mm, the powder feeding rate is 10g / min-90g / min, the spray gun moving speed is 1mm / s-3mm / s, and the substrate rotation speed is 80r / min-120r / min.

[0139] The above description is merely an example of the process for forming a non-stick coating through thermal spraying / cold spraying. The present invention is not limited to the actual selection of parameters for cold spraying.

[0140] In some embodiments, the thickness of the non-stick coating is in the range of 30 μm to 200 μm.

[0141] Vacuum Osmosis

[0142] According to this application, the manufacturing method further includes immersing a cookware substrate with a non-stick coating in a permeating liquid for vacuum impregnation to fill the pore structure and / or surface of the non-stick coating with non-stick particles formed by the curing of the permeating liquid. Filling the pore structure of the non-stick coating with non-stick particles using an impregnation permeating liquid further optimizes the non-stick properties and extends the service life of the non-stick coating. Simultaneously, it solves the problems of environmental burden and impact on operator health caused by atomized spraying. Specifically, the coated cookware substrate is placed in a dedicated device, the permeating liquid completely covers the surface of the non-stick coating (thermal sprayed surface), the high-pressure sealed container is closed, and vacuum impregnation is performed.

[0143] In some embodiments, the porosity of the non-stick coating can be between 2% and 10%. The porosity of the coating formed after filling with non-stick particles can be reduced, for example, to 1% to 8%.

[0144] In some embodiments, the permeating liquid is the aforementioned dispersion for forming silicone oil capsules, ceramic coatings, etc., wherein, under the action of vacuum permeation, the permeating liquid enters the pores of the non-stick coating, thereby forming a specific parameter on the pores and / or surface of the non-stick coating through a subsequent curing process. The parameters include: vacuum degree of 100-150 Pa, permeation pressure of 0.4 MPa-0.6 MPa, permeation time of 15 min-25 min, and permeation temperature of room temperature.

[0145] As an example, the dispersion of silicone oil capsules may include silicone oil, siloxane monomer, cationic surfactant, water, and organic acid, wherein the mass ratio of silicone oil, siloxane monomer, cationic surfactant, water, and organic acid may be (40-45):(45-50):(4-4.5):(2-10):(0.5-1).

[0146] According to this application, the method for manufacturing non-stick cookware further includes a step of centrifugal drying the cookware substrate after vacuum impregnation. This centrifugal drying step prevents the penetrating liquid from dripping onto the surface of the non-stick coating. As an example, the drying speed can be 120-300 rpm.

[0147] According to this application, high-temperature curing can be achieved by placing the vacuum-impregnated cookware in a sintering furnace and setting the curing parameters according to the curing characteristics of the corresponding non-stick coating, thereby forming non-stick particles in the porous structure and / or surface of the non-stick coating. As an example, the curing temperature of the impregnating liquid is 240℃-300℃, and the time is 10-15 min.

[0148] The present application will now be described in detail with reference to specific embodiments, but the scope of protection of the present application is not limited to the embodiments.

[0149] Example 1

[0150] The cookware according to Example 1 is manufactured by the following method.

[0151] Step S10: Prepare the cookware base. Specifically, the steps for preparing the cookware base include deep drawing a stainless steel sheet, surface alkaline washing to remove oil, drying, and sandblasting to obtain a cookware base with a thickness of 0.5 mm.

[0152] Step S20: Prepare a non-stick material with an average particle size of 15 μm. In this non-stick material, aluminum particles are used as metal particles, and alumina hollow / porous microsphere powder is used as ceramic microsphere particles. The non-stick material consists of multiple non-stick substrates and aluminum particles. Multiple non-stick substrates are encapsulated within an outer layer formed by the aluminum particles to form a core-shell structure. The non-stick substrates consist of alumina hollow / porous microsphere powder and silicone oil capsules filled within the porous structure of the alumina hollow / porous microsphere powder. In the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder, and metal particles is 1:1:0.5. The silicone oil capsules consist of methyl silicone oil and a network structure, with a weight ratio of methyl silicone oil to the network structure of 1:1. The network structure is formed by the hydrolysis of dimethyldimethoxysilane.

[0153] Step S30: Apply thermal spraying using a non-stick material.

[0154] The non-stick material is loaded into the powder feeder, and the plasma spraying parameters are set as follows: current 350A; voltage 40V; main gas (argon) flow rate 1000L / h; hydrogen flow rate 100L / h; powder feed gas flow rate 500L / h; powder feed amount 80g / min; spraying distance (distance between nozzle and workpiece) 13cm; spraying angle 60°; spraying time 80s. The non-stick material powder is formed on the inner surface of the cookware substrate by plasma spraying, resulting in a non-stick coating with a thickness of 65μm, thus completing the manufacture of the cookware in Example 1.

[0155] Example 2

[0156] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by the aluminum particles to form a coating structure, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:2:2 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 2 is manufactured using the same method as in Example 1.

[0157] Example 3

[0158] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment is composed of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by aluminum particles to form a coating structure, the non-stick body is composed of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:2:4 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 3 is manufactured using the same method as in Example 1.

[0159] Example 4

[0160] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by the aluminum particles to form a coating structure, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:2:8 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 4 is manufactured using the same method as in Example 1.

[0161] Example 5

[0162] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by the aluminum particles to form a coating structure, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:2 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 5 is manufactured using the same method as in Example 1.

[0163] Example 6

[0164] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by the aluminum particles to form a coating structure, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:4 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 6 is manufactured using the same method as in Example 1.

[0165] Example 7

[0166] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped inside the outer coating layer formed by the aluminum particles to form a coating structure, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:8 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 7 is manufactured using the same method as in Example 1.

[0167] Example 8

[0168] Except for step S20, which uses a different non-stick material (in this embodiment, the non-stick material uses titanium particles as metal particles, and the non-stick material is composed of a non-stick body and titanium particles, wherein multiple non-stick bodies are wrapped around the outer surface of the coating layer formed by the titanium particles to form a coating structure, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and titanium particles is the same as in Example 1, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 8 is manufactured using the same method as in Example 1.

[0169] Example 9

[0170] Except for step S20, which uses a different non-stick material (wherein, in this embodiment, the non-stick material uses graphene hollow / porous microspheres as porous wear-resistant microsphere particles, and the composition of the non-stick material consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped around the outside of the coating layer formed by the aluminum particles to form a coating structure, and in the non-stick material, the weight ratio of silicone oil capsules, graphene hollow / porous microspheres and aluminum particles is the same as in Example 1, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 9 is manufactured using the same method as in Example 1.

[0171] Example 10

[0172] Except for step S20, which uses a different substrate (the substrate in this embodiment is an aluminum alloy substrate), the cookware of Example 10 is manufactured using the same method as in Example 1.

[0173] Example 11

[0174] Except for step S20, which uses a different non-stick material (wherein, in this embodiment, the non-stick material uses hydroxyl silicone oil as the silicone oil, that is, the silicone oil capsule is composed of a network structure formed by hydroxyl silicone oil and dimethyldimethoxysilane, and the non-stick material is composed of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped around the outside of the coating layer formed by aluminum particles to form a coating structure, and in the non-stick material, the weight ratio of silicone oil capsule, alumina hollow / porous microsphere powder and aluminum particles is the same as in Example 1, and the weight ratio of silicone oil capsule is the same as in Example 1), the cookware of Example 11 is manufactured using the same method as in Example 1.

[0175] Example 12

[0176] Except for step S20, which uses a different non-stick material (wherein, the non-stick material in this embodiment is a network structure formed by hydrolysis of polysiloxane composed of trifunctional silane, i.e., the silicone oil capsule is composed of a network structure formed by hydrolysis of methyl silicone oil and siloxane monomer composed of trifunctional silane, the composition of the non-stick material is composed of non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped around the outside of the coating layer formed by aluminum particles to form a coating structure, and the weight ratio of silicone oil capsule, alumina hollow / porous microsphere powder and aluminum particles in the non-stick material is the same as in Example 1, wherein the composition and weight ratio of silicone oil capsule are the same as in Example 1), the cookware of Example 12 is manufactured by the same method as in Example 1.

[0177] Example 13

[0178] In addition to step S40 after step S30, a step is added—vacuum impregnating the cookware with the above-mentioned non-stick coating using a silicone oil dispersion as a permeating liquid. The dispersion may include silicone oil, dimethyldimethoxysilane, hexadecyltrimethyl quaternary ammonium bromide, water and citric acid. The mass ratio of silicone oil, dimethyldimethoxysilane, hexadecyltrimethyl quaternary ammonium bromide, water and citric acid may be (40-45):(45-50):(4-4.5):(2-10):(0.5-1). The cookware of Example 13 is manufactured using the same method as in Example 1.

[0179] Example 14 (The following examples all use hybrid structures)

[0180] Except for step S20, which uses a different non-stick material (wherein, the non-stick material in this embodiment is a hybrid structure, that is, multiple non-stick bodies are combined between adjacent metal particles, which is different from the non-stick material of Example 1 only in structure, and the components and the weight ratio of each component are the same as those in Example 1), the cookware of Example 14 is manufactured by the same method as in Example 1.

[0181] Example 15

[0182] Except for step S20, which uses a different non-stick material (wherein, the non-stick material in this embodiment is only structurally different from the non-stick material in Example 1, and the components and the weight ratio of each component are the same as in Example 2), the cookware of Example 15 is manufactured using the same method as in Example 14.

[0183] Example 16

[0184] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:2:1 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 16 is manufactured using the same method as in Example 14.

[0185] Example 17

[0186] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:2:2 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 17 is manufactured using the same method as in Example 14.

[0187] Example 18

[0188] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:4 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 18 is manufactured using the same method as in Example 14.

[0189] Example 19

[0190] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:8 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 19 is manufactured using the same method as in Example 14.

[0191] Example 20

[0192] Except for step S20, which uses a different non-stick material (the non-stick material in this embodiment consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, the non-stick body consists of alumina hollow / porous microsphere powder and silicone oil capsules filled in the porous structure of the alumina hollow / porous microsphere powder, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and metal particles is 2:1:16 respectively, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 20 is manufactured using the same method as in Example 14.

[0193] Example 21

[0194] Except for step S20, which uses a different non-stick material (in this embodiment, the non-stick material uses titanium particles as metal particles, and the non-stick material is composed of a non-stick body and titanium particles, wherein multiple non-stick bodies are dispersed between the titanium particles, and in the non-stick material, the weight ratio of silicone oil capsules, alumina hollow / porous microsphere powder and titanium particles is the same as in Example 1, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 21 is manufactured using the same method as in Example 14.

[0195] Example 22

[0196] Except for step S20, which uses a different non-stick material (wherein, in this embodiment, the non-stick material uses graphene hollow / porous microspheres as porous wear-resistant microsphere particles, and the composition of the non-stick material consists of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles, and in the non-stick material, the weight ratio of silicone oil capsules, graphene hollow / porous microspheres and aluminum particles is the same as in Example 1, and the composition and weight ratio of silicone oil capsules are the same as in Example 1), the cookware of Example 22 is manufactured using the same method as in Example 14.

[0197] Example 23

[0198] Except for step S20, which uses a different non-stick material (in this embodiment, the non-stick material uses hydroxyl silicone oil as the silicone oil, i.e., the silicone oil capsule is composed of hydroxyl silicone oil and a network structure formed by hydrolysis of fluorinated polysiloxane; the non-stick material is composed of a non-stick body and aluminum particles, wherein multiple non-stick bodies are dispersed between the aluminum particles; in the non-stick material, the weight ratio of silicone oil capsule, alumina hollow / porous microsphere powder and aluminum particles is the same as in Example 1, and the weight ratio of silicone oil capsule is the same as in Example 1), the cookware of Example 23 is manufactured using the same method as in Example 14.

[0199] Example 24

[0200] Except for step S20, which uses a different non-stick material (wherein, the non-stick material in this embodiment is a network structure formed by hydrolysis of polysiloxane composed of trifunctional silane, i.e., the silicone oil capsule is composed of methyl silicone oil and a network structure formed by hydrolysis of polysiloxane composed of trifunctional silane; the non-stick material is composed of a non-stick body and aluminum particles, wherein multiple non-stick bodies are wrapped around the outside of the coating layer formed by aluminum particles to form a coating structure; in the non-stick material, the weight ratio of silicone oil capsule, alumina hollow / porous microsphere powder and aluminum particles is the same as in Example 1, wherein the composition and weight ratio of silicone oil capsule are the same as in Example 1), the cookware of Example 24 is manufactured using the same method as in Example 14.

[0201] Example 25

[0202] In addition to step S40 in step S30, the cookware with the above-mentioned non-stick coating is vacuum impregnated using a silicone oil dispersion as a permeating liquid. The dispersion may include silicone oil, dimethyldimethoxysilane, hexadecyltrimethyl quaternary ammonium bromide, water and citric acid. The mass ratio of silicone oil, dimethyldimethoxysilane, hexadecyltrimethyl quaternary ammonium bromide, water and citric acid may be (40-45):(45-50):(4-4.5):(2-10):(0.5-1). The cookware of Example 25 is manufactured using the same method as in Example 14.

[0203] Comparative Example 1

[0204] In addition to using different materials in step S20 (wherein, the material in this comparative example is a conventional ceramic coating), the cookware of Comparative Example 1 is obtained by using an atomized spraying method.

[0205] Comparative Example 2

[0206] Except for using a different material in step S20 (wherein, the material of this comparative example is a non-stick body, wherein the weight ratio of silicone oil capsules and alumina hollow / porous microsphere powder in the non-stick body is 1:1), the cookware of Comparative Example 2 was manufactured using the same method as in Example 1.

[0207] Comparative Example 3

[0208] Except for using a different material in step S20 (wherein, the material of this comparative example is a non-stick body, wherein the weight ratio of silicone oil capsules and graphene hollow / porous microsphere powder in the non-stick body is 1:1), the cookware of Comparative Example 3 was manufactured using the same method as in Example 1.

[0209] Comparative Example 4

[0210] Except for using a different material in step S20 (wherein, the material in this comparative example is aluminum particles), the cookware of Comparative Example 4 was manufactured using the same method as in Example 1.

[0211] Comparative Example 5

[0212] Except for the use of a different material in step S20 (wherein, the material in this comparative example is titanium particles), the cookware of Comparative Example 5 was manufactured using the same method as in Example 1.

[0213] Comparative Example 6

[0214] Except for using a different material in step S20 (wherein, the material in this comparative example is graphene hollow / porous microspheres), the cookware of Comparative Example 6 was manufactured using the same method as in Example 1.

[0215] Comparative Example 7

[0216] Except for using a different material in step S20 (wherein, the material in this comparative example is alumina hollow / porous microsphere powder), the cookware of comparative example 7 was manufactured using the same method as in example 1.

[0217] The coatings of the cookware obtained in Examples 1-25 and Comparative Examples 1-7 were subjected to performance tests, and the results are recorded in Table 1 below. The specific performance test methods are as follows:

[0218] I. Testing Methods and Evaluation Criteria

[0219] 1. Compressive strength test method

[0220] According to GB / T 4740, place the test sample of the specified size into the testing machine, apply a force of 2*102N / s until the sample is crushed, and record the maximum load of the testing machine.

[0221] Here, "sample" refers to the coatings corresponding to the examples and comparative examples.

[0222] For compressive strength testing, the compressive strength of a coating indicates its ability to resist deformation and damage when subjected to compressive force perpendicular to the coating surface. A larger compressive strength value indicates better stability and durability of the coating under pressure.

[0223] 2. Durable non-stick properties test and evaluation standards

[0224] Test method: GB / T32388-2015 test method for durable non-stick properties, the unit is the number of cycles, the higher the number of cycles, the longer the lifespan. 500 cycles are used to evaluate the non-stick result once, and the number of cycles is recorded up to the level III.

[0225] For the durability non-stick test, it is desirable for the sample to have a higher durability non-stick test value.

[0226] 3. Bonding strength test and evaluation standards

[0227] Test method:

[0228] The test was performed according to HB 5476. Specifically, a test specimen of a specific size was prepared according to the standard requirements and fixed on a tensile testing machine and stretched at a slow speed of 2 mm / min until the thermal spray coating broke. The bonding strength between the film and the substrate was recorded.

[0229] For bonding strength testing, it is desirable for the sample to have a higher bonding strength value.

[0230] II. Test Results

[0231] Table 1 Test Results

[0232]

[0233]

[0234] As can be seen from Table 2, the non-stick materials according to this application, both the non-stick materials with multiple non-stick bodies wrapped inside the metal particles and the non-stick materials with multiple non-stick bodies bonded between adjacent metal particles, can balance properties such as compressive strength, wear resistance and bonding force, and have a long-lasting non-stick property.

[0235] However, the materials in Comparative Examples 1 to 7 cannot simultaneously address multiple aspects of cookware. For example, Comparative Example 1 has poor durability and adhesion. For Comparative Examples 2 and 3, since they do not contain metal particles, relatively high spraying parameters are required. When the spraying parameters are low, the adhesion between the coating and the substrate is poor, and the coating is easy to peel off, which still greatly affects the durability of non-stick properties.

[0236] While embodiments of this application have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. However, it should be understood that, in the view of those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of this application as defined in the claims.

Claims

1. A non-stick cookware characterized by, The non-stick cookware includes a cookware substrate and a non-stick coating formed on the cookware substrate. The non-stick coating is formed by spraying a non-stick material. The non-stick material includes a plurality of non-stick bodies. The non-stick bodies include porous wear-resistant microspheres and silicone oil capsules bonded to the porous wear-resistant microspheres. The non-stick material also includes metal particles. The plurality of non-stick bodies are wrapped inside the metal particles or the plurality of non-stick bodies are bonded between adjacent metal particles.

2. The non-stick cookware of claim 1, wherein, The silicone oil capsule is incorporated into the porous structure of the porous wear-resistant microspheres and on the surface of the porous wear-resistant microspheres.

3. The non-stick cookware according to claim 1, characterized in that, In the non-stick material, the weight ratio of the silicone oil capsule, the porous wear-resistant microsphere particles, and the metal particles is 1:(0.5-1):(0.5-5).

4. The non-stick cookware according to claim 1, characterized in that, The silicone oil capsule comprises a polysiloxane with a network structure and silicone oil adsorbed in the network structure.

5. The non-stick cookware according to claim 4, characterized in that, In the silicone oil capsule, the weight ratio of the silicone oil to the polysiloxane is (40-45):(25-45).

6. The non-stick cookware according to claim 1, characterized in that, The porous wear-resistant microspheres include at least one of the following: hollow / porous silica microsphere powder, hollow alumina microsphere powder, hollow molybdenum disulfide microspheres, hollow graphene microspheres, and hollow glass microspheres; and / or The metal particles include at least one of titanium particles, titanium alloy particles, aluminum particles, aluminum alloy particles, iron particles, iron alloy particles, copper particles, and copper alloy particles; and / or The silicone oil capsules include at least one of methyl silicone oil capsules and hydroxyl silicone oil capsules; The porous wear-resistant microspheres have a particle size of 5μm-65μm; and / or The particle size of the metal particles is 5μm-65μm.

7. The non-stick cookware according to claim 1, characterized in that, The thickness of the non-stick coating is in the range of 30μm-200μm.

8. The non-stick cookware according to any one of claims 1 to 7, characterized in that, The non-stick coating has a porous structure capable of storing oil, or the non-stick coating has a porous structure and / or non-stick particles on its surface.

9. The non-stick cookware according to claim 8, characterized in that, The non-stick particles are silicone oil capsules.

10. A method for manufacturing a non-stick cookware, characterized in that, The manufacturing method includes: Provide cookware base and non-stick material; The non-stick material is thermally or coldly sprayed onto the surface of the cookware substrate to form a non-stick coating on the surface of the cookware substrate.

11. The manufacturing method according to claim 10, characterized in that, The manufacturing method further includes: The cookware substrate with a non-stick coating is immersed in a permeating liquid to fill the pore structure and / or surface of the non-stick coating with non-stick particles formed by the curing of the permeating liquid.

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