WO2020042738A1 - 锅具及具有其的烹饪器具 - Google Patents

锅具及具有其的烹饪器具 Download PDF

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Publication number
WO2020042738A1
WO2020042738A1 PCT/CN2019/093080 CN2019093080W WO2020042738A1 WO 2020042738 A1 WO2020042738 A1 WO 2020042738A1 CN 2019093080 W CN2019093080 W CN 2019093080W WO 2020042738 A1 WO2020042738 A1 WO 2020042738A1
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WIPO (PCT)
Prior art keywords
cookware
resin layer
peek resin
microns
pot
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PCT/CN2019/093080
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English (en)
French (fr)
Inventor
钟春发
李洪伟
曹达华
黄宇华
Original Assignee
佛山市顺德区美的电热电器制造有限公司
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Priority claimed from CN201811237336.4A external-priority patent/CN110859518B/zh
Priority claimed from CN201821721311.7U external-priority patent/CN209153219U/zh
Priority claimed from CN201821732838.XU external-priority patent/CN209153220U/zh
Application filed by 佛山市顺德区美的电热电器制造有限公司 filed Critical 佛山市顺德区美的电热电器制造有限公司
Publication of WO2020042738A1 publication Critical patent/WO2020042738A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic

Definitions

  • 201821398991.3 filed by the Property Rights Office, the application name is “Potware and Cooking Utensils with It", filed on October 23, 2018 with the State Intellectual Property Office of China, the patent application number is 201821721311.7, and the application name is “ Cookware and cooking utensils with it ", filed on August 27, 2018 with the State Intellectual Property Office of China, patent application number is 201810981769.4, and the application name is” Potware and cooking utensils with it ", in August 2018
  • the patent application number was 201821398982.4, which was filed with the State Intellectual Property Office of the People's Republic of China on 27th, and the application name was “pots and cooking appliances with it", and the patent application number was 201811237336.4, which was filed with the State Intellectual Property Office of China on October 23, 2018. 6.
  • the present disclosure belongs to the technical field of domestic appliances, and in particular, the present disclosure relates to a cooker and a cooking appliance having the same.
  • non-stick liners are sprayed with fluororesin or ceramic non-stick coating on the inner surface of the pot.
  • the surface roughness is not enough.
  • air bubbles move towards the inner wall of the pot.
  • bubbles move towards the wall of the pot, resulting in uneven boiling and few boiling holes generated by the cooking, resulting in differences in the quality of the middle and edges of the rice
  • existing cooking appliances such as rice cookers or pressure cookers are prone to the problem of leakage of the seal ring, which affects the quality of rice cooking and brings hidden safety hazards.
  • an object of the present disclosure is to provide a cooker and a cooking appliance having the same.
  • the cooker is formed by forming a non-stick coating including a PEEK resin layer on the inner surface of the cooker body.
  • the main body of the cookware has good adhesion, which can ensure that the non-stick coating on the inside of the cookware has abrasion resistance and combines well with the surface of the cookware body.
  • the thickness of the non-stick coating on the bottom of the cookware body is high.
  • the non-stick coating on the side wall of the pot body can make the pot achieve the purpose of uniform heating, thereby improving the cooking effect of the pot.
  • the present disclosure proposes a cooker.
  • the cookware includes:
  • a non-stick coating comprising a PEEK resin layer, said non-stick coating being formed on at least a portion of an inner surface of said cooker body,
  • the thickness of the non-stick coating on the bottom of the pot body is higher than the thickness of the non-stick coating on the side wall of the pot body.
  • a non-stick coating including a PEEK resin layer on the inner surface of the cookware body, during the use of the cookware, abraded portions where abrasion generally occurs are not easy to cause a large-area coating. Damage, and because the PEEK resin layer has good adhesion to the cookware body, it can ensure that the non-stick coating on the inner surface of the cookware has abrasion resistance and is well combined with the inner surface of the cookware body.
  • the thickness of the non-stick coating on the inner bottom is higher than the non-stick coating on the inner wall of the main body of the cookware, which can achieve the purpose of uniform heating of the cookware, thereby improving the cooking effect of the cookware.
  • the cookware according to the above embodiments of the present disclosure may also have the following additional technical features:
  • the PEEK resin layer is a mesh continuous structure. Thereby, the cooking effect and service life of the pot can be improved.
  • the PEEK resin layer is formed on at least a portion of an inner surface of the cookware body. Thereby, the cooking effect and service life of the pot can be improved.
  • a PEEK resin layer in the non-stick coating layer formed on an inner surface of the cookware body has a concave-convex structure. Therefore, the cooking effect and service life of the pot can be improved.
  • the PEEK resin content in the PEEK resin layer is not less than 70% by weight. Therefore, it is possible to ensure that a PEEK resin layer having an uneven structure is formed on the inner surface of the cookware body.
  • the bump thickness of the PEEK resin layer formed on the inner surface of the cookware body is 10 to 70 microns. Therefore, the cooking effect and service life of the pot can be improved.
  • a distance between two adjacent bumps on the PEEK resin layer formed on an inner surface of the cookware body is 0.1 to 3 mm. Thereby, the cooking effect and service life of the pot can be improved.
  • the thickness of the PEEK formed on the inner surface of the cookware body is 8 to 150 microns, preferably 30 to 120 microns, and more preferably 50 to 90 microns. Thereby, the cooking effect and service life of the pot can be improved.
  • the thickness of the PEEK resin layer at the bottom of the pot body is 40 to 120 microns, and the thickness of the PEEK resin layer at the side wall of the pot body is 8 to 15 microns. Therefore, the cooking effect and service life of the pot can be improved.
  • the PEEK resin layer formed on the inner surface of the cookware body is further distributed with thermally conductive particles, and the thermally conductive particles are at least one selected from diamond powder, graphene, and aluminum powder. One. Thereby, the cooking effect of the pot can be improved.
  • the PEEK resin layer is further distributed with a filler, and the filler includes a pigment filler and an abrasion-resistant filler. Thereby, the service life of the cookware can be improved.
  • the pigment filler is at least one of alumina, silica, silicon carbide, and mica
  • the wear-resistant filler is selected from carbon black, calcium carbonate, ceramic powder, and corundum powder. At least one of them; and / or the D50 of the pigment filler is not higher than 12 microns, and the D50 of the wear-resistant filler is 10-50 microns. Thereby, the service life of the cookware can be improved.
  • the non-stick coating is formed on at least a portion of a pot rim of the pot body. This can ensure a good seal between the pot and the sealing ring, thereby improving the quality of rice cooking
  • the thickness of the PEEK resin layer in the non-stick coating layer formed on the pot edge is 10-20 microns.
  • a bump thickness of the PEEK resin layer formed on the pot edge is less than 8 microns. Therefore, it is possible to ensure that a PEEK resin layer with a concave-convex structure cannot be formed around the pot, thereby improving the pot sealing effect.
  • the PEEK resin content in the PEEK resin layer formed in the non-stick coating layer on the pot edge is not less than 40% by weight. As a result, a PEEK resin layer with a concave-convex structure cannot be formed around the pot, thereby improving the pot sealing effect.
  • the non-stick coating layer further includes at least one fluororesin layer, and the fluororesin layer is formed on at least a portion of the PEEK resin layer.
  • the fluororesin layer formed on the inner surface of the cookware body has a concave-convex structure, and a wave peak of the fluororesin layer is opposite to a wave peak of the PEEK resin layer, and the fluorine The troughs of the resin layer are opposite to the troughs of the PEEK resin layer.
  • the thickness of the single layer of the fluororesin layer is 8-12 microns. Therefore, the service life of the cookware can be improved.
  • the non-stick coating layer further includes a first fluororesin layer, and the first fluororesin layer is formed on at least a portion of the PEEK resin layer.
  • the first fluororesin layer formed on an inner surface of the cookware body has a concave-convex structure, and a wave peak of the first fluororesin layer is opposite to a wave peak of the PEEK resin layer.
  • the trough of the first fluororesin layer is opposite to the trough of the PEEK resin layer.
  • the non-stick coating layer further includes a second fluororesin layer, and the second fluororesin layer is formed on at least a portion of the first fluororesin layer.
  • the second fluororesin layer formed on an inner surface of the cookware main body has a concave-convex structure, and a wave peak of the second fluororesin layer and a The wave peaks are opposite, and the wave valleys of the second fluororesin layer are opposite to the wave valleys of the first fluororesin layer.
  • the thickness of the non-stick coating formed on the bottom of the inner surface of the cookware body is 50-300 microns, preferably 50-140 microns. This can improve the cooking effect of the cookware.
  • the thickness of the non-stick coating formed on the inner wall of the inner surface of the cookware body is 13-40 micrometers, preferably 18-30 micrometers. This can improve the cooking effect of the cookware.
  • the non-stick coating on the inner wall of the cookware body gradually becomes thinner. This can improve the cooking effect of the cookware.
  • the present disclosure proposes a cooking appliance.
  • the inner pot of the cooking appliance is the above-mentioned pot utensil.
  • the cooking appliance according to the embodiment of the present disclosure can improve the cooking effect and service life of the cooking appliance by using the above-mentioned cooking utensil as the inner pot, and the cooking appliance has good sealing performance, thereby meeting people's demand for high-quality cooking utensils. .
  • the cooking appliance is a rice cooker, a pressure cooker, a bread machine, a wok, or a fryer.
  • FIG. 1 is a schematic structural diagram of a cooker according to an embodiment of the present disclosure
  • FIG. 2 is a partial structural schematic diagram of a bottom of a cooker according to another embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 9 is a partial structural schematic diagram of a bottom of a cooker according to another embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 11 is a partial structural schematic diagram of a bottom of a cooker according to another embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • FIG. 13 is a partial structural schematic diagram of a bottom of a cooker according to another embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a cooker according to another embodiment of the present disclosure.
  • 15 is a schematic flowchart of a method for preparing a cooker according to an embodiment of the present disclosure
  • 16 is a schematic flowchart of a method for preparing a cooker according to another embodiment of the present disclosure.
  • FIG. 17 is a schematic flowchart of a method for preparing a cooker according to another embodiment of the present disclosure.
  • Example 18 is a partial structural schematic diagram of the bottom of the cooker obtained in Example 4.
  • FIG. 19 is a partial structural schematic diagram of the bottom of the cooker obtained in Example 5.
  • FIG. 19 is a partial structural schematic diagram of the bottom of the cooker obtained in Example 5.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality” is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.
  • the terms “installation,” “connected,” “connected,” and “fixed” should be understood broadly unless otherwise specified and defined, for example, they may be fixed or detachable. , Or integrated; it can be mechanical or electrical; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements, unless otherwise specified The limit.
  • the specific meanings of the above terms in the present disclosure can be understood according to specific situations.
  • the first feature "on” or “down” of the second feature may be the first and second features in direct contact, or the first and second features indirectly through an intermediate medium. contact.
  • the first feature is “above”, “above”, and “above” the second feature.
  • the first feature is directly above or obliquely above the second feature, or it only means that the level of the first feature is higher than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature.
  • the first feature may be directly below or obliquely below the second feature, or it may simply indicate that the first feature is less horizontal than the second feature.
  • a cookware includes a cookware body 100 and a non-stick coating 200 including a PEEK resin layer 21, and the non-stick coating 200 is formed on the cookware body 100.
  • the PEEK resin layer 21 is formed as an undercoat layer on at least a part of the inner surface of the cookware body 100.
  • the PEEK resin layer has better supporting force, higher hardness, and higher corrosion resistance, and can have a better bonding force with other non-stick resin layers.
  • polyetheretherketone PEEK is a linear aromatic semi-crystalline thermoplastic. Because of its rigid molecular chain containing a rigid benzene ring structure, a flexible ether bond, and a carbonyl group that improves intermolecular interaction, The structure is regular, and the formed PEEK resin layer has excellent properties such as high temperature resistance, abrasion resistance, corrosion resistance, and chemical resistance. The inventors of this application have realized this, and found out through bold attempts and surprises.
  • a non-stick coating including a PEEK resin layer is formed on at least a part of the inner surface of the cookware body.
  • the PEEK resin layer has good adhesion to the cookware body, which can ensure that the non-stick coating formed on the inner surface of the cookware has abrasion resistance and combines well with the inner surface of the cookware body.
  • the cookware is heated at the bottom. To achieve uniform heating, the thickness of the non-stick coating on the bottom of the pot body is higher than the non-stick coating on the inner wall of the pot body, which can achieve the purpose of uniform heating of the pot.
  • the non-stick coating may have one or more layers, and the non-stick coating may have one or more PEEK resin layers.
  • the material of the pot body 100 may be ceramic, enamel, metal, graphite, glass, or a composite plate, and the pot body may be any type of pot body existing in the prior art, including But it is not limited to wok, rice cooker liner, pressure cooker liner, roaster liner or toaster liner, etc.
  • the roughness Ra of the inner surface of the cookware body 100 is 2-3 microns. Thereby, the bonding strength between the inner surface of the pot body and the coating layer can be significantly improved.
  • the PEEK resin content in the PEEK resin layer formed on the inner surface of the cookware body is not less than 70% by weight, and the inventors have unexpectedly found that if the PEEK resin content in the PEEK coating is lower than At 70wt%, PEEK resin cannot be formed into a continuous network of convex layers by melting and cohesion at high temperature, and a PEEK coating with a PEEK resin content of not less than 70wt% can form a continuous network of protrusions. The raised part is unlikely to cause large-area coating damage.
  • the non-stick coating 200 thus obtained has excellent abrasion resistance and good adhesion to the pot body, so that it can be used with the pot body
  • the inner surface is well combined while improving the service life of the cookware.
  • the PEEK resin layer 21 with a concave-convex structure can prevent the bubbles from moving towards the wall of the pot, so that the bubbles can directly rise from the bottom of each position, thereby making the boiling more uniform during cooking and more boiling holes in the rice. This makes the flatness of the rice better.
  • the PEEK resin layer 21 having a concave-convex structure is formed on the inner surface of the pot body.
  • the force of the PEEK resin layer 21 is caused by the peak of the concave-convex structure.
  • the surface area increases and the area under stress increases when the top of the PEEK material is transferred to the bottom of the peak. This reduces the area pressure, which can avoid the deformation of the pot body.
  • the PEEK resin layer 21 has excellent corrosion resistance, making it difficult for water molecules to penetrate into the body of the cookware, thereby effectively avoiding pitting corrosion of the body of the cookware, thereby improving the service life of the cookware; the present disclosure uses PEEK resin
  • the PEEK coating with a content of not less than 70% by weight forms a PEEK resin layer on the inner surface of the cookware body, so that the PEEK resin layer has an uneven structure, and the uneven structure is made of A continuous network of PEEK resin.
  • a PEEK coating having a PEEK resin content of not less than 70 wt% is melted and cohesived at a high temperature to form a continuous network-like raised layer.
  • the thickness of the bumps of the PEEK resin layer 21 formed on the inner surface of the cookware body is not particularly limited, and those skilled in the art may select according to actual needs.
  • the PEEK resin layer 21 formed on the inner surface of the cookware body has a bump thickness of 10 to 70 microns, preferably 10 to 40 microns, and more preferably 10 to 30 microns. The inventors found that if the thickness of the bumps is too large, water droplets will be flattened on the surface of the coating due to the capillary action of the pores, reducing the hydrophobic angle, resulting in a reduction in the non-stickiness of the non-stick coating.
  • the gap between the bumps can easily be scratched by the outside, which will cause the coating to be damaged, reduce the abrasion resistance, and further reduce the bonding force between the non-stick coating and the pot body.
  • the surface of the PEEK resin layer using the bump thickness of the present application is relatively smooth, improves non-stick performance, and can protect the PEEK resin layer from large-area damage and improve wear resistance. It should be noted that the bump thickness of the PEEK resin layer is the distance between the peak top and peak bottom of the uneven structure.
  • the distance between two adjacent bumps on the PEEK resin layer 21 formed on the inner surface of the cookware body is not particularly limited. Those skilled in the art may choose according to actual needs. In a specific example disclosed, the distance between two adjacent bumps on the PEEK resin layer formed on the inner surface of the cookware body is 0.1 to 3 mm, such as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, and 0.6 mm.
  • the non-stick coating of the present application makes the formation of water droplets on the surface of the uneven structure contact, and cannot wet the coating surface, so that the non-stick coating has better hydrophobicity, and then the non-stick coating.
  • the non-stick performance is also better.
  • the distance between two adjacent bumps on the PEEK resin layer can be understood as the distance from the peak to the peak of the two adjacent uneven structures.
  • the bumps on the PEEK resin layer 21 have a certain arc, for example, the bumps on the PEEK resin layer 21 may be bowl-shaped.
  • the bumps have a certain arc, they do not form sharp shapes, which can reduce the stress on the bumps, reduce the scratches on the bumps, improve the wear resistance of the coating, and increase the service life of the coating, thereby Increase pot life.
  • the thickness of the PEEK resin layer 21 formed on the inner surface of the cooker body 100 is not particularly limited, and those skilled in the art may select according to actual needs. According to a specific example of the present disclosure
  • the thickness of the PEEK resin layer 21 formed on the inner surface of the cookware body 100 is 8 to 150 microns. The inventor found that if the PEEK resin layer is too thin, the cohesion of the PEEK resin cannot cover the inner surface of the cookware body, and the raised layer cannot be coherently formed into a network structure, and each raised point independently adheres to the inner surface of the cookware, and is subject to Shedding tends to occur when external mechanical forces are applied.
  • the PEEK resin layer is too thick, the cohesive force of the PEEK resin is too large, the shrinkage process causes the network structure to break, and a large number of independent raised points are prone to occur.
  • the adhesion strength of the coating film decreases rapidly. At the same time, the uneven feeling is enhanced, which affects the aesthetics and non-stick performance, and the heat conduction efficiency is also reduced.
  • the PEEK resin layer is too thick, the PEEK coating sprayed on the inner surface of the cookware body will rapidly evaporate and the PEEK paint on the inner surface of the cookware body. It turns into powder and is easily blown off during spraying.
  • the thickness of the PEEK resin layer 21 is preferably 30 to 120 microns, 50 to 90 microns, 30 to 35 microns, 60 to 65 microns, and more preferably 50 to 90 microns.
  • the inventors have found that the PEEK resin layer is 50-90 microns, and the coating film coherence effect reaches the best state.
  • the area of the inner surface of the pot body is also the largest, so the coating film strength and resistance Corrosion performance is also good.
  • the thickness of the PEEK resin layer at the bottom of the cookware body is 40 to 120 microns, and the thickness of the PEEK resin layer at the side wall of the cookware body is 8 to 15 microns. To ensure that the pot can be heated evenly. It should be noted that the thickness of the PEEK resin layer can be understood as the distance from the peak of the uneven structure on the PEEK resin layer to the inner surface of the cookware body.
  • the PEEK resin layer formed on the inner surface of the cookware body further contains thermally conductive particles.
  • the thermally conductive particles may be at least one selected from diamond powder, graphene, and aluminum powder. The inventors have found that by adding thermally conductive particles to the PEEK resin layer, the thermal conduction efficiency of the PEEK resin layer can be significantly improved, and the cooking effect of the cookware can be improved.
  • the inner surface of the bottom of the pan body needs to be added. It is thick to achieve the effect of wear resistance, but the thicker bottom coating makes the heat transfer effect poor.
  • the inventor of this application recognizes this problem. By adding thermal conductive particles to the PEEK resin layer, the PEEK resin can be improved. Layer heat transfer effect.
  • the PEEK resin layer formed on the inner surface of the cookware body further contains a filler
  • the filler may be a pigment filler and an abrasion-resistant filler
  • the D50 of the filler is not higher than 70 microns.
  • a filler with an appropriate particle size can be selected according to actual needs. For example, selecting a pigment filler with a D50 of 12 microns or less can ensure that the PEEK resin layer has excellent color development effect, preferably 2 to 5 microns; selecting a D50 of 10 to 50 microns Abrasion-resistant filler can significantly improve the abrasion resistance of PEEK resin layer.
  • the pigment filler is at least one of alumina, silica, silicon carbide, and mica
  • the abrasion-resistant filler is at least one selected from carbon black, calcium carbonate, ceramic powder, and corundum powder.
  • the total mass of the thermally conductive particles and the filler in the PEEK resin layer formed on the inner surface of the cookware body is not higher than 15% of the PEEK resin layer.
  • the inventors have found that if the total mass of the thermally conductive particles and the filler in the PEEK resin layer is too high, the coating density becomes poor and it is difficult to form an uneven structure.
  • the PEEK resin layer formed on the inner surface of the cookware body may contain PEEK resin, thermally conductive particles, and fillers, as well as other high-temperature-resistant resins and / or adhesive resins, thereby further reducing costs.
  • PEEK resin thermally conductive particles
  • fillers as well as other high-temperature-resistant resins and / or adhesive resins, thereby further reducing costs.
  • a person skilled in the art may select this according to actual needs.
  • a non-stick coating 200 is formed on at least a portion of a pot edge of the pot body 100.
  • PEEK polyetheretherketone
  • the PEEK resin layer has excellent properties such as high temperature resistance, abrasion resistance, corrosion resistance, and chemical resistance. The inventors of this application have recognized this and further discovered that by at least the A non-stick coating containing PEEK resin is formed on one part.
  • the PEEK resin layer 21 is formed on the pot edge as an undercoat layer, and the thickness of the PEEK resin layer 21 in the non-stick coating layer formed on the pot edge is 10-20 microns, for example, 10 microns, 11 microns, 12 Micron, 13 micron, 14 micron, 15 micron, 16 micron, 17 micron, 18 micron, 19 micron, 20 micron.
  • the PEEK resin layer in the thickness range of the present application does not have obvious uneven structure. Specifically, the thickness of the bump of the PEEK resin layer formed on the edge of the pot is less than 8 micrometers. Inside, the PEEK resin layer at the edge of the pot will not have obvious uneven structure, so as to ensure a good seal between the pot and the sealing ring.
  • the content of PEEK resin in the PEEK resin layer formed in the non-stick coating layer on the pan edge is not less than 40% by weight, for example, the content of PEEK resin is not less than 70% by weight.
  • the thickness of the resin layer 21 is 10 to 20 microns.
  • the PEEK resin layer 21 in this thickness range cannot establish an obvious uneven structure, and the formed non-stick coating 200 is relatively flat, so that the non-stick coating 200 and the The edge of the pot has a good binding force while ensuring the sealing of the pot.
  • a non-stick coating 200 is formed on at least a portion of an inner surface of the pot body 100, and a non-stick coating 200 is formed on at least a portion of a pot rim of the pot body 100; and
  • the PEEK resin layer in the non-stick coating layer 200 formed on the inner surface of the cookware body has an uneven structure.
  • the PEEK resin layer 21 is formed as an undercoat layer on at least a part of the inner surface of the cookware body 100.
  • the non-stick coating 200 may have one or more layers, and the non-stick coating 200 may include one or more PEEK resin layers 21.
  • the non-stick coating 200 is formed on the entire inner surface of the pot body 100, and the entire pot edge of the pot body 100 is formed.
  • a non-stick coating 200 is formed thereon; for another example, referring to FIG. 5, the non-stick coating 200 is formed on a part of the pot body 100 including the bottom of the pot, and the non-stick coating 200 is formed on the entire pot edge of the pot body 100.
  • the PEEK resin content of the PEEK resin layer 21 in the non-stick coating 200 is not less than 70% by weight.
  • the inventors have unexpectedly found that using a PEEK resin layer with a PEEK resin content of not less than 70% by weight can form a continuous network of protrusions, and the convex portions where scraping and abrasion generally occur are not likely to cause large-area coating damage.
  • the obtained non-stick coating 200 has excellent abrasion resistance and good adhesion to the body of the cookware, so that it can be well combined with the surface of the cookware body while improving the service life of the cookware.
  • the PEEK resin layer 21 with a concave-convex structure can prevent the bubbles from moving towards the wall of the pot, so that the bubbles can directly rise from the bottom of each position, thereby making the boiling more uniform during cooking and more boiling holes in the rice.
  • the PEEK resin layer 21 having a concave-convex structure is formed on the inner surface of the pot body.
  • the PEEK resin layer 21 has excellent corrosion resistance, which makes it difficult for water molecules to penetrate the pot body, thereby effectively avoiding pitting corrosion of the pot body, thereby improving the service life of the pot,
  • a non-stick coating 200 is formed on the entire pot edge, which can ensure a good seal between the pot and the sealing ring, thereby improving the quality of cooking.
  • the non-stick coating 200 may have one or more layers, and the non-stick coating may have one or more PEEK resin layers.
  • the PEEK resin layer 21 formed on the inner surface of the pot edge and / or the cookware body further contains a hard component.
  • the hard component is selected from At least one of silicon carbide, silicon nitride, and aluminum oxide.
  • the PEEK resin layer 21 formed on the inner surface of the pot edge and / or the body of the cookware may include other high-temperature-resistant resins and / or tackiness.
  • the resin and / or leveling agent and the like can be selected by those skilled in the art according to actual needs.
  • the non-stick coating 200 further includes at least one fluororesin layer 22 and a fluororesin layer. 22 is formed on at least a part of the PEEK resin layer 21 on the inner surface of the pot edge and / or the pot body 100.
  • a PEEK resin layer 21 formed on the pot edge is provided with a fluororesin layer 22;
  • a fluororesin layer 22 is formed on the PEEK resin layer 21 formed on the inner surface of the pot body 100.
  • a fluororesin layer is provided on the PEEK resin layer 21 formed on the pot edge and the inner surface of the pot body 100. twenty two.
  • the inventors have found that the PEEK resin layer can provide high strength and hardness to the fluororesin layer, and the PEEK resin layer has a good bonding force with the fluororesin layer, and the fluororesin layer has strong non-stick properties.
  • the dense PEEK resin layer can make the non-stick coating have strong corrosion resistance. Therefore, by combining the PEEK resin layer and the fluororesin layer, it can provide a non-stick coating with long service life.
  • the fluororesin layer 22 formed on the inner surface of the cookware body 100 has a concave-convex structure, and the peaks of the fluororesin layer 22 are opposite to the peaks of the PEEK resin layer 21.
  • the fluororesin layer The trough of 22 is opposite to the trough of PEEK resin layer 21, that is, the bumps of the fluororesin layer provided on the PEEK resin layer are formed on the bumps of the PEEK resin layer, and the pits of the fluororesin layer are formed on the pits of the PEEK resin layer. Therefore, the surface of the non-stick coating formed on the pot body is a concave-convex structure, thereby improving the cooking effect of the pot and increasing the service life of the pot.
  • the thickness of the single-layer fluororesin layer 22 is not particularly limited, and those skilled in the art may select according to actual needs. According to a specific example of the present disclosure, the thickness of the single-layer fluororesin layer 22 The thickness is 8-12 microns, such as 8 microns, 8.2 microns, 8.4 microns, 8.6 microns, 8.8 microns, 9 microns, 9.2 microns, 9.4 microns, 9.6 microns, 9.8 microns, 10 microns, 10.2 microns, 10.4 microns, 10.6 microns, 10.8 microns, 11 microns, 11.2 microns, 11.4 microns, 11.6 microns, 11.8 microns, 12 microns.
  • 8-12 microns such as 8 microns, 8.2 microns, 8.4 microns, 8.6 microns, 8.8 microns, 9 microns, 9.2 microns, 9.4 microns, 9.6 microns, 9.8 microns,
  • the non-sticky coating 200 further includes a first fluororesin layer 23 formed on at least the PEEK resin layer 21.
  • the first fluororesin layer 23 may be formed on at least a part of the PEEK resin layer 21 on the pot edge and / or on at least a part of the PEEK resin layer 21 on the inner surface of the cookware body 100.
  • the inventors have found that the PEEK resin layer can provide high strength and hardness to the fluororesin layer, and the PEEK resin layer has a good bonding force with the fluororesin layer, and the fluororesin layer has strong non-stick properties.
  • the dense PEEK resin layer can make the non-stick coating have strong corrosion resistance. Therefore, by combining the PEEK resin layer and the fluororesin layer, it can provide a long-life non-stick coating, thereby improving the use of pots. life.
  • the first fluororesin 23 is formed on the PEEK resin layer 21 on the pot edge and on the PEEK resin layer 21 on the inner surface of the pot body.
  • the first fluororesin layer 23 formed on the inner surface of the cookware body has a concave-convex structure, and the peak of the first fluororesin layer 23 is opposite to the peak of the PEEK resin layer 21.
  • the troughs of the first fluororesin layer 23 are opposite to the troughs of the PEEK resin layer 21, that is, the bumps of the first fluororesin layer provided on the PEEK resin layer are formed on the bumps of the PEEK resin layer, and the recesses of the first fluororesin layer
  • the dots are formed on the concave points of the PEEK resin layer, so that the surface of the non-stick coating layer is a concave-convex structure, which improves the service life of the non-stick coating layer, and then the service life of the cookware.
  • the thickness of the first fluororesin layer is not particularly limited, and those skilled in the art may select according to actual needs.
  • the thickness of the first fluororesin layer is 8 ⁇ 12 microns, such as 8 microns, 8.2 microns, 8.4 microns, 8.6 microns, 8.8 microns, 9 microns, 9.2 microns, 9.4 microns, 9.6 microns, 9.8 microns, 10 microns, 10.2 microns, 10.4 microns, 10.6 microns, 10.8 microns, 11 microns, 11.2 microns, 11.4 microns, 11.6 microns, 11.8 microns, 12 microns.
  • the first fluororesin layer includes a binder resin and a fluororesin.
  • the binder resin is at least one selected from PES, PAI, PPS, PEEK, and PPSU.
  • the fluororesin is at least one selected from PFA, PTFE, and EFP, and the binder resin is preferably at least one of PEEK and PPSU. Therefore, the first fluororesin layer formed by using this type of binder resin and fluororesin can be well combined with the PEEK resin layer, thereby providing a non-stick coating with a long service life.
  • the ratio of the binder resin and the fluororesin forming the first fluororesin coating layer may be 1: 4 ⁇ 2: 1.
  • the non-stick coating 200 may further include a second fluororesin layer 24.
  • the second fluororesin layer 24 is formed on the first fluororesin layer 24.
  • the second fluororesin layer 24 may be formed on at least a portion of the first fluororesin layer 23 on the pot edge and / or on the inner surface of the first fluororesin layer 23 of the cookware body 100. At least part of it.
  • the second fluororesin layer 24 may be formed on the first fluororesin layer 23 on the pot edge and on the first fluororesin layer 23 on the inner surface of the pot body 100.
  • the second fluororesin layer 24 formed on the first fluororesin layer 23 on the inner surface of the cooker body 100 has a concave-convex structure, and the peaks of the second fluororesin layer 24 and The peaks of the first fluororesin layer 23 are opposite, and the valleys of the second fluororesin layer 24 are opposite to the valleys of the first fluororesin layer 23, that is, the bumps of the second fluororesin layer 24 are formed on the bumps of the first fluororesin layer 23.
  • the pits of the second fluororesin layer 24 are formed on the pits of the first fluororesin layer 23, so that the coating surface formed on the cooker body has a concave-convex structure, thereby improving the service life of the non-stick coating. , Thereby further improving the service life of the pot.
  • the thickness of the second fluororesin layer is not particularly limited, and those skilled in the art may select according to actual needs.
  • the thickness of the second fluororesin layer is 8-12 microns, such as 8 microns, 8.2 microns, 8.4 microns, 8.6 microns, 8.8 microns, 9 microns, 9.2 microns, 9.4 microns, 9.6 microns, 9.8 microns, 10 microns, 10.2 microns, 10.4 microns, 10.6 microns, 10.8 microns , 11 microns, 11.2 microns, 11.4 microns, 11.6 microns, 11.8 microns, 12 microns.
  • the inventors have found that if the thickness of the second fluororesin layer is too thin, it cannot provide good non-stick performance, and if the thickness of the second fluororesin layer is too thick, the second fluororesin layer is liable to fall off. Therefore, by using the second fluororesin layer within the scope of the present application, the formed coating layer can be prevented from falling off while ensuring excellent non-stick performance.
  • the fluororesin in the second fluororesin layer is at least one selected from the group consisting of PFA, PTFE, and EFP. Therefore, the pot can be guaranteed to have excellent non-stick performance while improving its service life.
  • the thickness of the non-stick coating 200 on the bottom of the cookware body 100 is 50-300 microns, such as 50 microns, 60 microns, 70 microns, 80 microns , 90 microns, 100 microns, 110 microns, 120 microns, 130 microns, 140 microns, 150 microns, 160 microns, 170 microns, 180 microns, 190 microns, 200 microns, 210 microns, 220 microns, 230 microns, 240 microns, 250 microns Micron, 260 micron, 270 micron, 280 micron, 290 micron, 300 micron, the thickness of the coating 200 on the side wall of the pot body 100 is 13-40 micrometers, such as 13 micrometers, 14 micrometers, 15 micrometers, 16 micrometers, 17 micrometers, 18 micron, 19 micron, 20 micron, 21 micron, 22 micron
  • the PEEK resin layer 21 is formed on the entire inner surface of the cookware body 100
  • the first fluororesin layer 23 is formed on the entire PEEK resin layer 21
  • the second fluororesin layer 24 is formed on the first
  • the "non-stick coating" on the bottom of the cookware body and the "non-stick coating" on the inner wall of the cookware body include a PEEK resin layer, a first fluororesin layer and a second fluororesin layer; As shown in FIG.
  • the PEEK resin layer 21 is formed on the bottom of the cookware body 100, and the first fluororesin layer 23 is formed on the PEEK resin layer 21 and covers the remaining inner surfaces of the cookware body 100 that are not covered by the PEEK resin layer 21.
  • the second fluororesin layer 24 is formed on the entire first fluororesin layer 23, and the "non-stick coating" on the bottom of the cookware body includes a PEEK resin layer and the first fluororesin layer and the second fluororesin formed thereon.
  • the "non-stick coating" on the inner wall of the cookware body includes a first fluororesin layer and a second fluororesin layer.
  • the non-stick coating 200 on the inner surface sidewall of the cookware body 100 gradually becomes thinner. Therefore, the cooking utensil can be uniformly heated, thereby improving the cooking effect of the cooking utensil. Specifically, since the cooking utensils and inner liners are heated at the bottom and then transmitted to the pot wall to heat the food, and the spatula and rice spatula contacted by the bottom are more scratched, the bottom needs to be thickened to achieve resistance. The grinding effect can improve the uniformity of temperature transmission. Therefore, the coating is sprayed into a structure with a thick bottom and a thin coating on the side wall of the pot, which is preferably gradually thinned, which can save energy to the greatest extent.
  • the method includes:
  • the steps of pretreating the inner surface of the pot body and the pot edge include degreasing, sanding, alkaline washing, neutralization, water washing, etc., to improve the roughness of the pot, thereby improving the body of the pot and the Cohesive coating.
  • the above pretreatment process is a conventional process, and those skilled in the art can select specific process operating conditions according to actual needs.
  • step S200 spray PEEK paint on at least a part of the inner surface of the pre-processed pot body and at least a part of the pot edge obtained in step S100, and perform drying and sintering
  • PEEK coating is sprayed on at least a part of the inner surface of the pre-processed cookware body and at least a part of the pot edge obtained in step S100, and dried and sintered to form on at least a part of the inner surface of the cookware body.
  • the content of PEEK resin is not less than 70% by weight, so that the inner surface of the pot body and the pot edge can be sprayed as a whole to form a PEEK resin with an uneven structure on the inner surface of the pot body. Layers, thereby reducing production costs and process complexity.
  • the entire inner surface of the cookware body and the entire pot edge may be sprayed with a PEEK coating having a PEEK resin content of not less than 70% by weight, so as to form a PEEK resin layer having a significantly uneven structure on the entire inner surface of the cookware body.
  • the PEEK resin layer 21 has a bump thickness of 10 to 70 micrometers, and a PEEK resin layer with an inconspicuous uneven structure is formed on the entire pot edge.
  • the PEEK resin layer 21 has a bump thickness of less than 8 micrometers. Therefore, during the rice cooking process, the PEEK resin layer can prevent the bubbles from moving toward the wall of the pot, so that the bubbles can directly rise from various positions at the bottom, thereby making the boiling more uniform during cooking and more boiling holes in the rice, making The flatness of the rice is better.
  • the PEEK resin layer with a concave-convex structure is formed on the surface of the body of the cookware. When the top is transferred to the bottom of the peak, in addition to the hardness of the PEEK material, the surface area of the PEEK is increased, the area of the force is also increased, and the area pressure is reduced.
  • the PEEK resin layer with a concave-convex structure has excellent corrosion resistance, which makes it difficult for water molecules to penetrate the pot body, thereby effectively avoiding pitting corrosion of the pot body, thereby improving the life of the pot, and by A PEEK resin layer with an inconspicuous uneven structure is formed on the entire pot edge of the pot body. While improving the scratch resistance and corrosion resistance of the pot edge, it can ensure that Having good seal with the seal ring, thereby improving the cooking quality.
  • the PEEK coating can be made into a powder coating or a water-based coating, and a leveling agent and a binder can be added to the coating (the leveling agent and the binder are conventional types, and will not be repeated here), PEEK coating can be sprayed by brushing, electrostatic spraying, air pressure spray gun, plasma spraying, or electrophoretic deposition, and then dried at 80 to 120 degrees Celsius for 10 to 15 minutes, and then sintered at 380 to 420 degrees Celsius for 5 to 15 minutes. PEEK The PEEK resin in the coating is melted and cohesived at a high temperature to form a continuous network of convex layers, thereby forming a hard PEEK resin layer with an uneven structure on the inner surface of the pot body.
  • the PEEK resin layer with the uneven structure thus obtained has excellent The abrasion resistance and the good adhesion to the pot body can improve the service life of the pot while being well combined with the surface of the pot body.
  • the temperature of the pot body is controlled to be 35 to 55 degrees Celsius while spraying PEEK coating on at least a part of the inner surface of the pot body, such as 35 degrees Celsius, 36 degrees Celsius, 37 degrees Celsius, 38 degrees Celsius, and 39 degrees Celsius.
  • the thickness of the PEEK resin layer formed on the pot edge of the pot body 100 is 10-20 microns.
  • the PEEK coating in this range cannot establish a significant uneven structure, and the formed coating is relatively flat, thereby ensuring the sealing performance of the cooking appliance.
  • the above method for preparing a cookware further includes:
  • a first fluororesin coating is sprayed on the PEEK resin layer obtained above, and dried and sintered to form a first fluororesin layer on at least a part of the PEEK resin layer.
  • PEEK coating can be sprayed on the inner surface of the pot body including the bottom of the pot, that is, the PEEK resin layer 21 is formed on the inner surface of the pot body including the bottom of the pot, and then the entire PEEK resin layer 21 and the pot are formed.
  • a first fluororesin coating is sprayed on the remaining inner surface of the PEEK resin layer 21 that is not covered in the body, so that the first fluororesin layer 23 is formed on the entire surface of the PEEK resin layer 21 and covers the PEEK resin layer 21 that is not covered in the pot body.
  • the remaining inner surface, and the peak of the first fluororesin layer 23 is opposite to the peak of the PEEK resin layer 21, and the trough of the first fluororesin layer 23 is opposite to the PEEK resin layer 21, that is, the first fluorine provided on the PEEK resin layer
  • the convex point of the resin layer is formed on the convex point of the PEEK resin layer, and the concave point of the first fluororesin layer is formed on the concave point of the PEEK resin layer, so that the surface of the non-stick coating layer is an uneven structure, and the non-stick coating layer is improved.
  • the service life of the pot is improved.
  • the PEEK resin layer 21 formed on the inner surface of the cookware body can provide high support and hardness for the first fluororesin layer 23, and the PEEK resin layer 21 and the first fluororesin layer 22 have a good bond.
  • the first fluororesin layer 23 has strong non-stick performance, and the dense PEEK resin layer 21 can make the non-stick coating have strong corrosion resistance. Therefore, the PEEK resin layer 21 and the first The combination of the fluororesin layer 23 can provide a non-stick coating with a long service life.
  • drying and sintering of this process are conventional processes in the field, and those skilled in the art can select parameters such as temperature and time of the process according to actual needs, for example, drying at 80-120 ° C for 10-15min , And then sintered at 380-420 °C for 5-15min.
  • the above method for preparing a cookware further includes:
  • a second fluororesin coating is sprayed on the first fluororesin layer 23 obtained above, and dried and sintered to form a second fluororesin layer 24 on at least a portion of the first fluororesin layer 23.
  • PEEK coating can be sprayed on the inner surface of the pot body including the bottom of the pot, that is, the PEEK resin layer 21 is formed on the inner surface of the pot body including the bottom of the pot, and then the entire PEEK resin layer 21 and the pot are formed.
  • a first fluororesin coating is sprayed on the remaining inner surface of the PEEK resin layer 21 that is not covered in the body, so that the first fluororesin layer 23 is formed on the entire surface of the PEEK resin layer 21 and covers the PEEK resin layer 21 that is not covered in the pot body.
  • the remaining inner surface is then sprayed with a second fluororesin on the entire surface of the first fluororesin layer 23 so that the second fluororesin layer 24 covers the entire first fluororesin layer 23.
  • drying and sintering of this process are conventional processes in the field, and those skilled in the art can select parameters such as temperature and time of the process according to actual needs, for example, drying at 80-120 ° C for 10-15min , And then sintered at 380-420 °C for 5-15min.
  • the present disclosure proposes a cooking appliance.
  • the inner pot of the cooking appliance is the above-mentioned pot utensil.
  • the inventor found that the cooking appliance can improve the cooking effect and service life of the cooking appliance by using the above-mentioned cooking utensil as the inner pot, and the cooking appliance has good sealing performance, thereby meeting people's demand for high-quality cooking utensils.
  • the cooking appliance is a rice cooker, a pressure cooker, a bread machine, a wok, or a fryer.
  • Degreasing, sanding, alkaline washing, neutralizing, and water washing operations are performed on the inner surface of the metal cookware body (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface oil is removed at high temperature) to improve the body Inner surface roughness, then the air pressure spray gun sprays PEKK-containing coating (PEEK resin content 70wt%, carbon black (D50 is 2 ⁇ 5 microns, content 1wt%)) onto metal cookware (controls the temperature of the cookware body to 35 ⁇ 45 °C) inner surface, atomizing pressure is 0.25MPa, oil output is 500cc / min, spraying distance is 20cm, then it is dried at 80 ° C for 10 minutes, and sintered at 380 ° C for 15min.
  • PEKK-containing coating PEEK resin content 70wt%, carbon black (D50 is 2 ⁇ 5 microns, content 1wt%)
  • the first fluororesin coating PEEK resin content 25wt%, PTFE content 55wt%
  • atomization pressure 0.2MPa oil out
  • the amount is 450cc / min, and the spray distance is 15cm.
  • First fluororesin bump coating (thickness: 8-12 microns), Spray the second fluororesin coating (89wt% of PTFE, 10wt% of PFA, 1wt% of mica containing titanium dioxide coating), atomization pressure is 0.3MPa, oil output is 500cc / min, spraying distance is 30cm, spraying at 100cm Dry for 12 minutes at °C to melt and level the second fluororesin coating on PEEK coating to form a film, and then sinter at 400 ° C for 10 minutes to form a second fluororesin uneven coating (thickness: 8-12 microns) on the PEEK uneven coating.
  • the thickness distribution of the obtained non-stick coating on the inner surface of the cookware is: bottom: 50-60 microns, and sidewall: 18-30 microns.
  • Degreasing, sanding, alkaline washing, neutralizing, and water washing operations are performed on the inner surface of the metal cookware body (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface oil is removed at high temperature) to improve the body of the cookware Inner surface roughness, then the air pressure spray gun sprays PEKK-containing coating (PEEK resin content 75wt%, alumina (D50 is 10-50 microns, content 10wt%)) onto metal cookware (controls the temperature of the cookware body to 35 ⁇ 45 ° C) inner surface, atomizing pressure is 0.3MPa, oil output is 300cc / min, spraying distance is 35cm, then drying at 120 ° C for 10 minutes, and sintering at 420 ° C for 5min, the inner surface has PEEK bump coating on the bottom Layer of cookware (coating thickness of 50 to 90 microns, protrusion thickness of 20 to 30 microns), and then spray the first
  • the PEEK coating was melted and leveled to form a film, and then sintered at 400 ° C for 10 minutes to form a second fluororesin bump coating (thickness: 8-12 microns) on the PEEK bump coating.
  • the obtained non-stick coating was The thickness distribution of the inner surface of the cookware is: bottom: 65-120 microns, side walls: 18-30 microns.
  • Degreasing, sanding, alkaline washing, neutralizing, and water washing operations are performed on the inner surface of the metal cookware body (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface oil is removed at high temperature) to improve the body Inner surface roughness, then the air pressure spray gun sprays PEKK-containing coating (PEEK resin content 80wt%, carbon black (D50 is 2 ⁇ 5 microns, content 8wt%)) onto metal cookware (controls the temperature of the cookware body to 35 ⁇ 45 °C) inner surface, the atomizing pressure is 0.26MPa, the oil output is 400cc / min, the spraying distance is 25cm, and then it is dried at 100 ° C for 12 minutes and sintered at 400 ° C for 5min.
  • PEKK-containing coating PEEK resin content 80wt%, carbon black (D50 is 2 ⁇ 5 microns, content 8wt%)
  • Cookware coating thickness of 60 to 65 microns, raised thickness of 20 to 30 microns
  • the first fluororesin coating (15% by weight of PAI, 45% by weight of PFA), atomization pressure of 0.25MPa, oil out
  • the amount is 400cc / min and the spraying distance is 25cm.
  • First fluororesin bump coating (thickness 8-12 microns), then spray The second fluororesin coating (99% by weight of PFA), the atomizing pressure is 0.25MPa, the oil output is 400cc / min, the spraying distance is 25cm, and the second fluororesin coating is dried on the PEEK coating at 100 ° C for 12min after spraying. Melt and level into a film, and then sinter at 400 ° C for 10 minutes to form a second fluororesin bump coating (thickness: 8-12 microns) on the PEEK bump coating. The resulting non-stick coating is on the inner surface of the cookware.
  • the thickness distribution is: bottom: 75-90 microns, sidewall: 20-24 microns.
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 70wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 35 to 45 ° C).
  • PEEK-containing coating PEEK resin content 70wt%
  • the atomizing pressure is 0.25 MPa
  • the oil output is 500 cc / min
  • the spraying distance is 20 cm
  • a PEEK resin layer (coating with a concave and convex structure) is formed on the inner surface of the metal cookware. The thickness is 30-50 micrometers, and its structure is shown in Figure 18. The coating particles have established an effective connection.)
  • a PEEK resin layer is formed on the edge of the pot (the coating thickness is 10-20 micrometers, and no uneven structure is formed). .
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 75% by weight) on the inner surface of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C), while using air
  • the pressure spray gun will contain PEEK coating (PEEK resin content 40wt%) to the pot pot.
  • the atomizing pressure of the air pressure spray gun is 0.3MPa, the oil output is 300cc / min, the spraying distance is 35cm, and then it is dried at 120 ° C for 10 minutes.
  • a PEEK resin layer with a concave-convex structure is formed on the inner surface of the metal cookware (the coating thickness is 50-90 microns, and its schematic structure is shown in Fig. 19, where the coating particles are tightly bound to form a regular pattern)
  • a PEEK resin layer is formed on the rim of the cookware (the thickness of the coating layer is 10 to 20 microns, and the uneven structure is not formed).
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 80wt%) on the inner surface of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C), while using air
  • the pressure spray gun will contain PEEK coating (PEEK resin content 50wt%) to the pot pot.
  • the atomization pressure of the air pressure spray gun is 0.26MPa, the oil output is 400cc / min, the spray distance is 25cm, and then it is dried at 100 ° C for 12 minutes.
  • a PEEK resin layer with a concave-convex structure is formed on the inner surface of the metal cookware (the coating thickness is 90 to 120 microns, and the coating particles are tightly bound to form a regular pattern), and a PEEK is formed on the cookware edge Resin layer (coating thickness is 10-20 microns, no uneven structure is formed).
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 85% by weight) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C).
  • PEEK-containing coating PEEK resin content 85% by weight
  • the atomizing pressure is 0.28 MPa
  • the oil output is 350 cc / min
  • the spraying distance is 30 cm
  • it is dried at 90 degrees Celsius for 12 minutes and sintered at 390 degrees Celsius for 10 minutes to form a concave-convex PEEK resin layer (coating) on the inner surface of the metal cookware.
  • the thickness is 90 to 120 microns, and the coating particles are tightly bound to form a regular texture.
  • a PEEK resin layer is formed on the rim of the cookware (the coating thickness is 10 to 20 microns, and no uneven structure is formed).
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 90wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C).
  • PEEK-containing coating PEEK resin content 90wt%
  • the atomizing pressure is 0.29MPa
  • the oil output is 450cc / min
  • the spraying distance is 32cm
  • a PEEK resin layer (coating with a concave and convex structure) is formed on the inner surface of the metal cookware.
  • the thickness is 60-65 microns, the coating particles are tightly bound to form a more regular texture), and a PEEK coating is formed on the edge of the pan (the thickness of the coating is 10-20 microns, and no uneven structure is formed).
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprayed with PEEK coating (PEEK resin content 70wt%, diamond powder content 8wt%, carbon black (D50 2-5 microns) content 10wt%) To the inner surface of the metal cookware (control the temperature of the cookware body at 35-45 ° C) and the edge of the pot, the atomizing pressure is 0.25MPa, the oil output is 500cc / min, the spray distance is 20cm, and then it is dried at 80 ° C for 10 minutes.
  • degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is
  • a PEEK resin layer with a thickness of 40-70 microns at the bottom of the pot was prepared.
  • a PEEK resin layer was formed on the edge of the pot (the coating thickness was 10-20 microns, and no uneven structure was formed).
  • the first fluororesin coating (35% by weight of PEEK resin, 60% by weight of PTFE resin and the rest of alumina) is sprayed on the inner surface and the pot edge, the atomization pressure is 0.2MPa, the oil output is 450cc / min, and the spray distance is 15cm. After spraying, it is dried at 80 ° C for 15 minutes to melt the first fluororesin coating on the PEEK resin layer.
  • the thickness distribution of the obtained non-stick coating on the inner surface of the pan is: Bottom: 50-90 microns, sidewall: 16-30 microns, pot edge: 18-32 microns.
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 75wt%, graphene content 5wt%, and alumina (D50 10-50 microns) content 20wt%).
  • PEEK-containing coating PEEK resin content 75wt%, graphene content 5wt%, and alumina (D50 10-50 microns) content 20wt%).
  • the atomizing pressure is 0.3MPa
  • the oil output is 300cc / min
  • the spraying distance is 35cm
  • a PEEK resin layer with a thickness of 90-120 microns at the bottom of the pot was prepared.
  • a PEEK resin layer was formed on the edge of the pot (the coating thickness was 10-20 microns, and no uneven structure was formed).
  • the first fluororesin paint (PPSU resin content 35wt%, PFA content 60wt%) along the top, atomization pressure is 0.3MPa, oil output is 300cc / min, spray distance is 30cm, and spray dry at 120 ° C for 10min to make
  • the first fluororesin coating was melted and leveled into a film on the PEEK coating, and then Sintered at 0 ° C for 5 minutes to form a first fluororesin layer (thickness: 8-12 microns) on the PEEK resin layer.
  • the thickness distribution of the obtained non-stick coating on the inner surface of the cookware is: bottom: 100-135 microns , Side wall: 18-30 microns, pot edge: 18-32 microns.
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprays the PEEK coating (PEEK resin content 75wt%, aluminum powder content 2wt%, and carbon black (D50 2-5 microns) content 23wt%).
  • PEEK coating PEEK resin content 75wt%, aluminum powder content 2wt%, and carbon black (D50 2-5 microns) content 23wt%).
  • the atomization pressure is 0.26MPa
  • the oil output is 400cc / min
  • the spray distance is 25cm
  • a PEEK resin layer with a thickness of 90-120 microns at the bottom of the pot was prepared.
  • a PEEK resin layer was formed on the edge of the pot (the coating thickness was 10-20 microns, and no uneven structure was formed).
  • the first fluororesin coating (45% by weight of PPSU resin and 45% by weight of PFA resin) is sprayed on the inner wall and the pot, the atomization pressure is 0.25 MPa, the oil output is 400cc / min, the spray distance is 25cm, and the spray is dried at 100 ° C Melt and level the first fluororesin coating on the PEEK coating into a film in 12 minutes, and then Sintering at 10 ° C for 10 minutes to form a first fluororesin resin coating (thickness: 8-12 microns) on the PEEK resin layer, and then spray a second fluororesin coating (20% by weight of PFA, 80% by weight of PTFE) on the inner wall of the pot and the pot edge.
  • Atomizing pressure is 0.25MPa
  • oil output is 400cc / min
  • spraying distance is 25cm
  • Sintering at 400 ° C for 10 minutes to form a second fluororesin layer (thickness: 8-12 microns) on the first fluororesin layer.
  • the thickness distribution of the obtained non-stick coating on the inner surface of the cookware is: bottom: 110- 145 microns, side walls: 25-30 microns, pot edge: 26-44 microns.
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the edge of the pot, and then the air pressure spray gun sprays PEEK-containing coating (PEEK resin content 75wt%, aluminum powder content 10wt%, carbon black (D50 is 2 to 5 microns) content 15wt%) To the inner surface of the metal cookware (control the temperature of the cookware body at 35-45 ° C) and the edge of the pot, the atomization pressure is 0.26MPa, the oil output is 400cc / min, the spray distance is 25cm, and then it is dried at 100 ° C for 12 minutes.
  • degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface
  • a PEEK resin layer with a thickness of 90-120 microns at the bottom and a thickness of 8-15 microns at the side wall was prepared.
  • the thickness of the PEEK resin layer at the edge of the pot was 10-15 microns, and then in the pot
  • the first fluororesin coating (40% by weight of PPS resin and 45% by weight of EFP) is sprayed on the surface and the pot edge, the atomization pressure is 0.25 MPa, the oil output is 400cc / min, the spray distance is 25cm, and it is dried at 100 ° C after spraying Melt and level the first fluororesin coating on the PEEK resin layer into a film in 12min, and then at 400 ° C Sintering for 10 minutes to form a first fluororesin layer (thickness: 8-12 microns) on the PEEK resin layer, and then spray a second fluororesin coating (PTFE content 100wt%) on the inner surface of the cookware body and along the
  • the thickness distribution of the obtained non-stick coating on the inner surface of the cookware is: bottom: 110-145 microns, side walls : 25-30 microns, pot edge: 26-42 microns.
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 70wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 35 to 45 ° C).
  • PEEK-containing coating PEEK resin content 70wt%
  • the atomizing pressure is 0.25 MPa
  • the oil output is 500 cc / min
  • the spraying distance is 20 cm
  • a PEEK resin layer (coating with a concave and convex structure) is formed on the inner surface of the metal cookware. Thickness of 30-50 microns, effective connection has been established between the coating particles), and a PEEK resin layer is formed on the rim of the cookware (coating thickness of 30-50 microns, forming an uneven structure).
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 60wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 35 to 45 ° C).
  • PEEK-containing coating PEEK resin content 60wt%
  • the atomizing pressure is 0.25 MPa
  • the oil output is 500 cc / min
  • the spraying distance is 20 cm
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 50wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C).
  • PEEK-containing coating PEEK resin content 50wt%
  • the atomizing pressure is 0.3 MPa
  • the oil output is 300 cc / min
  • the spraying distance is 35 cm
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 40wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45-55 ° C).
  • PEEK-containing coating PEEK resin content 40wt%
  • the atomizing pressure is 0.26MPa
  • the oil output is 400cc / min
  • the spraying distance is 25cm
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 30wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45-55 ° C).
  • PEEK-containing coating PEEK resin content 30wt%
  • the atomizing pressure is 0.28 MPa
  • the oil output is 350 cc / min
  • the spraying distance is 30 cm
  • Degreasing, sanding, alkaline washing, neutralization, water washing and other operations are performed on the inner surface and the edge of the metal cookware (wherein, degreasing means that the metal is burned at 380-420 ° C for 5-15min, and the surface grease is removed by high temperature) to improve The roughness of the inner surface of the pot body and the pot edge, and then the air pressure spray gun sprays the PEEK-containing coating (PEEK resin content 20wt%) on the inner surface and the pot edge of the metal pot (controlling the temperature of the pot body of 45 to 55 ° C).
  • PEEK-containing coating PEEK resin content 20wt%
  • the atomizing pressure is 0.29 MPa
  • the oil output is 450 cc / min
  • the spraying distance is 32 cm
  • Thermal conductivity evaluation method Inject the same amount of water into the pot, heat it with the same power, and sort the time to reach 100 ° C. From one to twenty, the larger the value, the shorter the time to reach 100 ° C (good thermal conductivity)
  • Abrasion resistance evaluation method Add 5g / L dishwashing solution in the pot to cover the bottom of the pot, apply 3Kg pressure on 3X7cm 3M Baijie cloth, and make a horizontal reciprocating movement on the bottom of the pot based on a wide parallel line , The stroke is 10cm, one reciprocation is one cycle, and every 100 cleaning cloths are replaced. Check whether the substrate is exposed on the surface of the coating, and the number of cycles of the exposed substrate is the wear resistance of the coating.
  • Scratch resistance Use a lixin 318 hardness test pen, choose a 0.75mm nib, adjust the spring pressure to 20N, draw a straight line over 5cm on the coating surface, and observe the depth of the scratch

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Abstract

一种锅具及具有锅具的烹饪炊具，锅具包括：锅具本体（100）和不粘涂层（200），不粘涂层（200）包括PEEK树脂层（21），不粘涂层（200）形成在锅具本体（100）的至少一部分内表面上，其中锅具本体（100）底部的不粘涂层（200）厚度高于锅具本体（100）侧壁的不粘涂层（200）厚度。

Description

锅具及具有其的烹饪器具
优先权信息
本公开请求于2018年10月23日向中国国家知识产权局提交的、专利申请号为201821732838.X、申请名称为“锅具及具有其的烹饪器具”、于2018年8月27日向中国国家知识产权局提交的、专利申请号为201821398991.3、申请名称为“锅具及具有其的烹饪器具”、于2018年10月23日向中国国家知识产权局提交的、专利申请号为201821721311.7、申请名称为“锅具及具有其的烹饪器具”、于2018年8月27日向中国国家知识产权局提交的、专利申请号为201810981769.4、申请名称为“锅具及具有其的烹饪器具”、于2018年8月27日向中国国家知识产权局提交的、专利申请号为201821398982.4、申请名称为“锅具及具有其的烹饪器具”以及于2018年10月23日向中国国家知识产权局提交的、专利申请号为201811237336.4、申请名称为“锅具及具有其的烹饪器具”的六件中国专利申请的优先权，并且其全部内容通过引用结合在本公开中。
技术领域
本公开属于生活电器技术领域，具体而言，本公开涉及一种锅具及具有其的烹饪器具。
背景技术
目前的不粘内胆都是采用在锅体内表面喷涂氟树脂或者陶瓷不粘涂料，但内胆喷涂这些不粘涂层后，表面的粗糙度不够，煮饭时，气泡都往锅的内壁移动，从而导致煮饭时的平整度较差，中间有凹坑；同时，煮饭时，气泡往锅壁移动，导致沸腾不均匀，煮饭产生的沸腾孔很少，从而米饭中间和边缘品质差异较大，同时现有的烹饪器具例如电饭煲或压力锅等煮饭机器容易出现密封圈漏气的问题，从而影响煮饭品质，同时带来安全隐患。
因此，现有的锅具有待进一步改进。
公开内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出一种锅具及具有其的烹饪器具，该锅具通过在锅具本体的内表面上形成包括PEEK树脂层的不粘涂层，由于PEEK树脂层对锅具本体具有良好的粘结性，从而可以保证锅具内部的不粘涂层具有耐磨性的同时与锅具本体内表面良好结合，同时通过将锅具本体内底部的不粘涂层厚度高于锅具本体侧壁的不粘涂层，可以使得锅具达到均匀加热的目的，从而提高锅具的烹饪效果。
在本公开的一个方面，本公开提出了一种锅具。根据本公开的实施例，所述锅具包括：
锅具本体；
不粘涂层，所述不粘涂层包括PEEK树脂层，所述不粘涂层形成在所述锅具本体的至少一部分内表面上，
其中，所述锅具本体底部的所述不粘涂层厚度高于所述锅具本体侧壁的所述不粘涂层厚度。
根据本公开实施例的通过在锅具本体的内表面上形成包括PEEK树脂层的不粘涂层，锅具使用过程中，刮擦磨损一般发生的凸起部分，不容易造成大面积的涂层破坏，并且由于PEEK树脂层对锅具本体具有良好的粘结性，从而可以保证锅具内表面不粘涂层具有耐磨性的同时与锅具本体内表面良好结合，同时通过将锅具本体内底部的不粘涂层厚度高于锅具本体内侧壁的不粘涂层，可以使得锅具达到均匀加热的目的，从而提高锅具的烹饪效果。
另外，根据本公开上述实施例的锅具还可以具有如下附加的技术特征：
在本公开的一些实施例中，所述PEEK树脂层为网状连续结构。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，所述PEEK树脂层形成在所述锅具本体的至少一部分内表面上。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面的所述不粘涂层中PEEK树脂层具有凹凸结构。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，所述PEEK树脂层中PEEK树脂含量不低于70wt％。由此，可以保证在锅具本体内表面形成凹凸结构的PEEK树脂层。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述PEEK树脂层凸点厚度为10～70微米。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述PEEK树脂层上相邻两个所述凸点的距离为0.1～3mm。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述PEEK厚度为8～150微米，优选30～120微米，更优选50～90微米。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，所述锅具本体底部的所述PEEK树脂层的厚度为40～120微米，所述锅具本体侧壁的所述PEEK树脂层的厚度为8～15微米。由此，可以提高锅具的烹饪效果和使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述PEEK树脂层进一步分布有导热粒子，所述导热粒子为选自钻石粉、石墨烯和铝粉中的至少之一。由此，可以提 高锅具的烹饪效果。
在本公开的一些实施例中，所述PEEK树脂层进一步分布有填料，所述填料包括颜填料和耐磨填料。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，所述颜填料为氧化铝、二氧化硅、碳化硅和云母中的至少之一，所述耐磨填料为选自炭黑、碳酸钙、陶瓷粉和刚玉粉中的至少之一；和/或所述颜填料的D50不高于12微米，所述耐磨填料的D50为10～50微米。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，所述锅具本体的锅沿的至少部分上形成所述不粘涂层。由此，可以保证锅具与密封圈的良好密封，从而提高煮饭品质
在本公开的一些实施例中，形成在所述锅沿上的所述不粘涂层中PEEK树脂层的厚度为10～20微米。由此，可以保证锅具密封，从而提高锅具的烹饪效果。
在本公开的一些实施例中，形成在所述锅沿上的所述PEEK树脂层的凸点厚度为小于8微米。由此，能够保证锅沿处不能形成凹凸结构的PEEK树脂层，从而提高锅具密封效果。
在本公开的一些实施例中，形成在所述锅沿上的所述不粘涂层中的PEEK树脂层中PEEK树脂含量不低于40wt％。由此，使得锅沿处不能形成凹凸结构的PEEK树脂层，从而提高锅具密封效果。
在本公开的一些实施例中，所述不粘涂层进一步包括至少一层氟树脂层，所述氟树脂层形成在所述PEEK树脂层的至少一部分上。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述氟树脂层具有凹凸结构，并且所述氟树脂层的波峰与所述PEEK树脂层的波峰相对，所述氟树脂层的波谷与所述PEEK树脂层的波谷相对。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，单层所述氟树脂层的厚度为8～12微米。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，所述不粘涂层进一步包括第一氟树脂层，所述第一氟树脂层形成在所述PEEK树脂层的至少一部分上。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述第一氟树脂层具有凹凸结构，并且所述第一氟树脂层的波峰与所述PEEK树脂层的波峰相对，所述第一氟树脂层的波谷与所述PEEK树脂层的波谷相对。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，所述不粘涂层进一步包括第二氟树脂层，所述第二氟树脂层形成在所述第一氟树脂层的至少一部分上。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面上的所述第二氟树脂层具有凹凸结构，并且所述第二氟树脂层的波峰与所述第一氟树脂层的波峰相对，所述第二氟树脂 层的波谷与所述第一氟树脂层的波谷相对。由此，可以提高锅具的使用寿命。
在本公开的一些实施例中，形成在所述锅具本体内表面底部的所述不粘涂层厚度为50～300微米，优选50～140微米。由此，可以提高锅具的烹饪效果。
在本公开的一些实施例中，形成在所述锅具本体内表面侧壁上的所述不粘涂层的厚度为13～40微米，优选18～30微米。由此，可以提高锅具的烹饪效果。
在本公开的一些实施例中，沿着所述锅具本体的底部到顶部的方向，所述锅具本体内表面侧壁上的所述不粘涂层逐渐变薄。由此，可以提高锅具的烹饪效果。
在本公开的再一个方面，本公开提出了一种烹饪器具。根据本公开的实施例，所述烹饪器具的内锅为上述所述的锅具。
根据本公开实施例的烹饪器具通过采用上述的锅具作为内锅，可以提高该烹饪器具的烹饪效果和使用寿命，并且该烹饪器具具有良好的密封性能，从而满足人们对高品质锅具的需求。
在本公开的一些实施例中，所述烹饪器具为电饭煲、压力锅、面包机、炒锅或煎烤机。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开一个实施例的锅具的结构示意图；
图2是根据本公开再一个实施例的锅具底部的局部结构示意图；
图3是根据本公开又一个实施例的锅具的结构示意图；
图4是根据本公开又一个实施例的锅具的结构示意图；
图5是根据本公开又一个实施例的锅具的结构示意图；
图6是根据本公开又一个实施例的锅具的结构示意图；
图7是根据本公开又一个实施例的锅具的结构示意图；
图8是根据本公开又一个实施例的锅具的结构示意图；
图9是根据本公开又一个实施例的锅具底部的局部结构示意图；
图10是根据本公开又一个实施例的锅具的结构示意图；
图11是根据本公开又一个实施例的锅具底部的局部结构示意图；
图12是根据本公开又一个实施例的锅具的结构示意图；
图13是根据本公开又一个实施例的锅具底部的局部结构示意图；
图14是根据本公开又一个实施例的锅具的结构示意图；
图15是制备本公开一个实施例的锅具的方法流程示意图；
图16是制备本公开再一个实施例的锅具的方法流程示意图；
图17是制备本公开又一个实施例的锅具的方法流程示意图；
图18是实施例4所得锅具底部的局部结构示意图；
图19是实施例5所得锅具底部的局部结构示意图。
公开详细描述
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
在本文中所披露的范围的端点和任何值都不限于该精确的范围或值，这些范围或值应当理解为包含接近这些范围或值的值。对于数值范围来说，各个范围的端点值之间、各个范围的端点值和单独的点值之间，以及单独的点值之间可以彼此组合而得到一个或多个新的数值范围，这些数值范围应被视为在本文中具体公开。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特 征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开的一个方面，本公开提出了一种锅具。根据本公开的实施例，参考图1和2，锅具包括锅具本体100和不粘涂层200，不粘涂层200包括PEEK树脂层21，该不粘涂层200形成在锅具本体100的至少一部分内表面上，并且锅具本体100底部的不粘涂层200厚度高于锅具本体100侧壁的不粘涂层200厚度。优选的，PEEK树脂层21作为底涂层形成在锅具本体100的至少一部分内表面上。发明人发现，由于PEEK树脂层具有较好的支撑力、较高的硬度以及较高的耐腐蚀性能，并能够与其他不粘树脂层之间具有较好的结合力。同时发明人还发现，聚醚醚酮(PEEK)是一种线性芳族半结晶的热塑性塑料，由于其大分子链上含有刚性的苯环结构、柔顺的醚键及提高分子间作用的羰基，结构规整，形成的PEEK树脂层具有优良的耐高温性能、耐磨性、耐腐蚀性能和耐化学性能等优异性能，而本申请的发明人正是认识到这一点，通过大胆尝试并惊奇的发现，在锅具本体的至少一部分内表面上形成包括PEEK树脂层的不粘涂层，锅具使用过程中，刮擦磨损一般发生的凸起部分，不容易造成大面积的涂层破坏，并且由于PEEK树脂层对锅具本体具有良好的粘结性，从而可以保证锅具内表面形成的不粘涂层具有耐磨性的同时与锅具本体内表面良好结合，同时锅具是底部加热，为达到加热的均匀性，将锅具本体底部的不粘涂层厚度高于锅具本体内侧壁的不粘涂层，可以使得锅具达到均匀加热的目的，从而提高锅具的烹饪效果，优选沿着锅底到锅口的方向上，锅具本体内壁上不粘涂层逐渐变薄，从而使得其上的不粘涂层能够平滑过渡。具体的，该不粘涂层可以为一层或多层结构，并且该不粘涂层中可以具有一层或多层PEEK树脂层。
根据本公开的一个实施例，锅具本体100的材质可以为陶瓷、搪瓷、金属、石墨或玻璃或复合板等材质，并且锅具本体可以为现有技术中存在的任何类型的锅体，包括但不限于炒锅、电饭锅内胆、压力锅内胆、煎烤机内胆或面包机内胆等。并且锅具本体100内表面的粗糙度Ra为2-3微米。由此，可以显著提高锅具本体内表面与涂层的结合强度。
根据本公开的再一个实施例，形成在锅具本体内表面上不粘涂层的PEEK树脂层中PEEK树脂含量不低于70wt％，发明人意外的发现，若PEEK涂料中PEEK树脂含量低于70wt％时，PEEK树脂在高温下熔融内聚无法形成连续网状的凸起层，而采用PEEK树脂含量不低于70wt％的PEEK涂层可以形成连续的网状凸起，并且刮擦磨损一般发生的凸起部分，不容易造成大面积的涂层破坏，由此得到的不粘涂层200具有优异的耐磨性以及对锅具本体具有良好的粘结性，从而可以在与锅具本体内表面良好结合的同时提高锅具的使用寿命。在煮饭过程中，该具有凹凸结构的PEEK树脂层21可以阻止气泡往锅壁移动，使得气泡可以直接从底部各个位置向上浮起，从而使得煮饭时沸腾更均匀，米饭的沸腾孔更多， 使得米饭的平整度更佳，同时，在硬物刮擦的过程中，由于在锅具本体内表面上形成具有凹凸结构的PEEK树脂层21，该PEEK树脂层21的力由凹凸结构的峰顶传递到峰底时，除了PEEK材料本身的硬度抵消以外，从峰顶传递到峰底时，表面积增大，受力面积也增大，减少了区域压强，从而可以避免锅具本体的变形，另外，该PEEK树脂层21具有优异的耐腐蚀性能，使得水分子不容易渗透到锅具本体，从而有效避免了锅具本体的点状腐蚀，进而提高锅具的使用寿命；本公开采用PEEK树脂含量不低于70wt％的PEEK涂料形成锅具本体内表面上的PEEK树脂层，使得该PEEK树脂层具有凹凸结构，并且该凹凸结构是由PEEK树脂形成的网状连续结构。具体的，PEEK树脂含量不低于70wt％的PEEK涂料在高温下熔融内聚形成连续网状的凸起层。
根据本公开的再一个具体实施例，形成在锅具本体内表面上PEEK树脂层21凸点厚度并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本公开的一个具体示例，形成在锅具本体内表面上PEEK树脂层21凸点厚度为10～70微米，优选10～40微米，更优选10～30微米。发明人发现，若凸点的厚度过大，由于孔隙的毛细作用会使水滴平铺在涂层表面，降低疏水角，导致不粘涂层的不粘性降低。而若凸点厚度过小，此时凸点之间的间隙容易收到外界的刮擦，从而导致涂层破坏，降低耐磨性能，并进一步降低不粘涂层与锅具本体的结合力。而采用本申请凸点厚度的PEEK树脂层的表面较为光滑，提高不粘性能，且能够保护PEEK树脂层不会大面积的破坏，提高耐磨性能。需要说明的是，PEEK树脂层凸点厚度为凹凸结构的峰顶到峰底之间的距离。
根据本公开的又一个具体实施例，形成在锅具本体内表面上PEEK树脂层21上相邻两个凸点的距离并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本公开的一个具体示例，形成在锅具本体内表面上PEEK树脂层上相邻两个凸点的距离为0.1～3毫米，例如0.1毫米、0.2毫米、0.3毫米、0.4毫米、0.5毫米、0.6毫米、0.7毫米、0.8毫米、0.9毫米、1.0毫米、1.2毫米、1.4毫米、1.6毫米、1.8毫米、2.0毫米、2.2毫米、2.4毫米、2.6毫米、2.8毫米、3.0毫米。发明人发现，本申请的不粘涂层使水滴在凹凸结构的表面的形成点接触，并不能浸润到涂层表面上，从而使得不粘涂层具备较佳的疏水性，进而不粘涂层的不粘性能也较佳。需要说明的是，PEEK树脂层上相邻两个凸点的距离可以理解为相邻两个凹凸结构的波峰到波峰之间的距离。
根据本公开的又一个具体实施例，参考图2，PEEK树脂层21上凸点具有一定的弧度，例如，PEEK树脂层21上凸点可以呈碗状。发明人发现，由于凸点具有一定的弧度，不成尖锐的形状，从而能够减缓凸点的受力，减少凸点的刮擦，提高涂层的耐磨性能，并增强涂层的使用寿命，进而提高锅具的使用寿命。
根据本公开的又一个具体实施例，形成在锅具本体100内表面上的PEEK树脂层21的 厚度并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本公开的一个具体示例，形成在锅具本体100内表面上的PEEK树脂层21的厚度为8～150微米。发明人发现，若PEEK树脂层过薄，PEEK树脂内聚无法覆盖锅具本体内表面，并且凸起层无法连贯成网状结构，并且每个凸起点独立粘附在锅具本内表面，受到外来机械力时容易发生脱落现象，而若PEEK树脂层过厚，PEEK树脂内聚力太大，收缩过程导致网状结构断裂，且容易出现大量的独立的凸起点，涂膜附着强度迅速下降。同时凹凸感增强，影响美观和不粘性能，导热效率也下降；进一步的，若PEEK树脂层过厚，喷涂在锅具本体内表面的PEEK涂料，溶剂快速挥发，锅具本体内表面的PEEK涂料变成粉末，喷涂过程中容易被吹掉。根据本公开的再一个具体示例，PEEK树脂层21厚度优选30～120微米、50～90微米、30～35微米、60～65微米，进一步优选50～90微米。发明人发现，PEEK树脂层为50～90微米，涂膜连贯效果达到最佳状态，同时，PEEK树脂层作为底涂层时对锅具本体内表面的覆盖面积也最大，因此涂膜强度和耐腐蚀性能也较好。根据本公开的再一个具体示例，所述锅具本体底部的PEEK树脂层的厚度为40～120微米，所述锅具本体侧壁的所述PEEK树脂层的厚度为8～15微米，此时在保证锅具能够均匀加热。需要说明的是，PEEK树脂层厚度可以理解为PEEK树脂层上凹凸结构的峰顶至其锅具本体内表面的距离。
根据本公开的又一个具体实施例，为了提高形成在锅具本体内表面上PEEK树脂层的导热性，形成在锅具本体内表面上PEEK树脂层进一步含有导热粒子，根据本公开的一个具体示例，导热粒子可以为选自钻石粉、石墨烯和铝粉中的至少之一。发明人发现，通过在PEEK树脂层中加入导热粒子，可以显著提高PEEK树脂层的热传导效率，从而可以提高锅具的烹饪效果。具体的，由于锅具都是采用底部加热，再传导到锅壁达到加热食物的目的，而且底部所接触锅铲、饭铲等刮擦较多，因此需要对锅具本体底部的内表面进行加厚，以其达到耐磨的效果，然而底部涂层较厚使得传热效果较差，而本申请的发明人正是认识到该问题，通过在PEEK树脂层中加入导热粒子，可以提高PEEK树脂层的热传导效果。
根据本公开的又一个具体实施例，形成在锅具本体内表面上的PEEK树脂层进一步含有填料，例如该填料可以为颜填料和耐磨填料等，填料的D50不高于70微米。具体的，可以根据实际需要选择适宜粒径的填料，例如，选择D50为12微米以下的颜填料可以确保PEEK树脂层具有优异的展色效果，优选2～5微米；选择D50为10～50微米的耐磨填料，可以显著提高PEEK树脂层的耐磨效果。例如，颜填料为氧化铝、二氧化硅、碳化硅和云母中的至少之一，耐磨填料为选自炭黑、碳酸钙、陶瓷粉和刚玉粉中的至少之一。
根据本公开的又一个具体实施例，形成在锅具本体内表面上的PEEK树脂层中导热粒子和填料的总质量不高于PEEK树脂层的15％。发明人发现，若PEEK树脂层中导热粒子 和填料的总质量过高，涂层致密性变差，且难以形成凹凸结构。
需要说明的是，形成在锅具本体内表面上的PEEK树脂层中除含有PEEK树脂、导热粒子和填料外，还可以含有其他耐高温树脂和/或粘性树脂等，由此可以进一步降低成本。对此本领域技术人员可以根据实际需要进行选择。
根据本公开的实施例，参考图3，锅具本体100的锅沿的至少部分上形成不粘涂层200。由于聚醚醚酮(PEEK)是一种线性芳族半结晶的热塑性塑料，由于其大分子链上含有刚性的苯环结构、柔顺的醚键及提高分子间作用的羰基，结构规整，形成的PEEK树脂层具有优良的耐高温性能、耐磨性、耐腐蚀性能和耐化学性能等优异性能，而本申请的发明人正是认识到这一点，进一步发现通过在锅具本体的锅沿的至少一部分上形成包含PEEK树脂的不粘涂层，在保证锅沿不粘的同时，能够提高锅沿对密封圈的支撑力，减少涂层在长时间使用过程中的摩擦、腐蚀和变形，从而提高锅沿与密封圈的配合精度，可以保证锅具与密封圈的良好密封，从而提高煮饭品质。优选的，PEEK树脂层21作为底涂层形成在锅沿上，并且形成在锅沿上的不粘涂层中的PEEK树脂层21的厚度为10～20微米，例如10微米、11微米、12微米、13微米、14微米、15微米、16微米、17微米、18微米、19微米、20微米。发明人发现，若形成在锅沿上的PEEK树脂层的厚度过薄，则无法实现与密封圈的密封；而若PEEK树脂层的厚度过高，则得到的PEEK树脂层容易出现明显的凹凸结构，同样影响锅具的密封效果。而采用本申请该厚度范围的PEEK树脂层不会出现明显的凹凸结构，具体的，形成在所述锅沿上的所述PEEK树脂层的凸点厚度为小于8微米，在该凸点厚度范围内，锅沿处的PEEK树脂层不会出现明显的凹凸结构，从而可以保证锅具与密封圈的良好密封。
具体的，形成在锅沿上的不粘涂层中的PEEK树脂层中PEEK树脂含量不低于40wt％，例如PEEK树脂含量不低于70wt％。发明人发现，若PEEK树脂含量过低，则喷涂过程中溶剂快速挥发，喷涂的涂料变成粉末，喷涂过程中容易被吹掉。进一步的，为了能够得到锅具本体内表面具有明显凹凸结构的PEEK树脂层，采用PEEK涂料中PEEK树脂含量不低于70wt％的PEEK涂料对锅具和锅沿进行喷涂，在锅沿处形成PEEK树脂层21的厚度为10～20微米，此时，该厚度范围的PEEK树脂层21无法建立明显的凹凸结构，形成的不粘涂层200较为平坦，从而可以在保证该不粘涂层200与锅沿具有良好结合力的同时保证锅具的密封。
根据本公开的一个实施例，参考图4和5，锅具本体100的至少一部分内表面上形成不粘涂层200，锅具本体100的锅沿的至少一部分上形成不粘涂层200；并且形成在所述锅具本体内表面的所述不粘涂层200中PEEK树脂层具有凹凸结构。优选的，PEEK树脂层21作为底涂层形成在锅具本体100的至少一部分内表面上。具体的，该不粘涂层200可以为 一层或多层结构，并且该不粘涂层200中可以具有一层或多层PEEK树脂层21。本领域技术人员可以根据实际需要选择不粘涂层200的具体设置位置，例如，参考图4，不粘涂层200形成在锅具本体100的整个内表面上，锅具本体100的整个锅沿上形成不粘涂层200；又例如，参考图5，不粘涂层200形成在锅具本体100的包括锅底的一部分上，锅具本体100的整个锅沿上形成不粘涂层200。根据本公开的一个具体示例，不粘涂层200中PEEK树脂层21的PEEK树脂含量不低于70wt％。发明人意外的发现，采用PEEK树脂含量不低于70wt％的PEEK树脂层可以形成连续的网状凸起，并且刮擦磨损一般发生的凸起部分，不容易造成大面积的涂层破坏，由此得到的不粘涂层200具有优异的耐磨性以及对锅具本体具有良好的粘结性，从而可以在与锅具本体内表面良好结合的同时提高锅具的使用寿命。在煮饭过程中，该具有凹凸结构的PEEK树脂层21可以阻止气泡往锅壁移动，使得气泡可以直接从底部各个位置向上浮起，从而使得煮饭时沸腾更均匀，米饭的沸腾孔更多，使得米饭的平整度更佳，同时，在硬物刮擦的过程中，由于在锅具本体内表面上形成具有凹凸结构的PEEK树脂层21，该PEEK树脂层21的力由凹凸结构的峰顶传递到峰底时，除了PEEK材料本身的硬度抵消以外，从峰顶传递到峰底时，表面积增大，受力面积也增大，减少了区域压强，从而可以避免锅具本体的变形，另外，该PEEK树脂层21具有优异的耐腐蚀性能，使得水分子不容易渗透到锅具本体，从而有效避免了锅具本体的点状腐蚀，进而提高锅具的使用寿命，而在锅具本体的整个锅沿上形成不粘涂层200，可以保证锅具与密封圈的良好密封，从而提高煮饭品质。具体的，该不粘涂层200可以为一层或多层结构，并且该不粘涂层中可以具有一层或多层PEEK树脂层。
根据本公开的又一个具体实施例，形成在锅沿和/或锅具本体内表面上的PEEK树脂层21进一步含有硬质组分，根据本公开的一个具体示例，硬质组分为选自碳化硅、氮化硅和氧化铝的至少之一。由此，可以显著提高PEEK树脂层21的耐磨效果。
需要说明的是，形成在锅沿和/或锅具本体内表面上的PEEK树脂层PEEK树脂层21中除含有PEEK树脂和硬质组分等外，还可以含有其他耐高温树脂和/或粘性树脂和/或流平剂等，对此本领域技术人员可以根据实际需要进行选择。
根据本公开的又一个实施例，为了提高形成在锅沿和/或锅具本体内表面上不粘涂层的不粘性，不粘涂层200进一步包括至少一层氟树脂层22，氟树脂层22形成在锅沿和/或锅具本体100内表面上PEEK树脂层21的至少一部分上，例如，参考图6，形成在锅沿上PEEK树脂层21上设有氟树脂层22；参考图7，形成在锅具本体100内表面上PEEK树脂层21上均设有氟树脂层22，参考图8，形成在锅沿和锅具本体100内表面上PEEK树脂层21上均设有氟树脂层22。发明人发现，PEEK树脂层能够为氟树脂层提供高强的支撑力和硬度，并且该PEEK树脂层与氟树脂层之间具有良好的结合力，而且该氟树脂层具有较强的不粘 性能，而且致密的PEEK树脂层可以使得不粘涂层具有很强的耐蚀性，由此通过将PEEK树脂层与氟树脂层结合，可以提供长久使用寿命的不粘涂层。
根据本公开的又一个具体实施例，参考图9，形成在锅具本体100内表面的氟树脂层22具有凹凸结构，并且氟树脂层22的波峰与PEEK树脂层21的波峰相对，氟树脂层22的波谷与PEEK树脂层21的波谷相对，即设在PEEK树脂层上的氟树脂层的凸点形成在PEEK树脂层的凸点上，氟树脂层的凹点形成在PEEK树脂层的凹点上，从而使得形成在锅具本体的不粘涂层表面为凹凸结构，从而在提高锅具烹饪效果的同时提高锅具的使用寿命。
根据本公开的又一个具体实施例，单层氟树脂层22的厚度并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本公开的一个具体示例，单层氟树脂层22的厚度为8～12微米，例如8微米、8.2微米、8.4微米、8.6微米、8.8微米、9微米、9.2微米、9.4微米、9.6微米、9.8微米、10微米、10.2微米、10.4微米、10.6微米、10.8微米、11微米、11.2微米、11.4微米、11.6微米、11.8微米、12微米。发明人发现，若单层氟树脂层厚度过薄不能提供良好的不粘性能，而若氟树脂层过厚，导致氟树脂层容易脱落。由此，采用本申请范围的氟树脂层，可以在保证所形成的涂层具有优异的不粘性能的同时避免其脱落。
根据本发明的一个具体示例，为了提高锅具的不粘性，参考图10和11，不粘涂层200进一步包括第一氟树脂层23，第一氟树脂层23形成在PEEK树脂层21的至少一部分上。具体的，该第一氟树脂层23可以形成在锅沿上的PEEK树脂层21的至少一部分上和/或锅具本体100内表面上的PEEK树脂层21的至少一部分上。发明人发现，PEEK树脂层能够为氟树脂层提供高强的支撑力和硬度，并且该PEEK树脂层与氟树脂层之间具有良好的结合力，而且该氟树脂层具有较强的不粘性能，而且致密的PEEK树脂层可以使得不粘涂层具有很强的耐蚀性，由此通过将PEEK树脂层与氟树脂层结合，可以提供长久使用寿命的不粘涂层，进而提高锅具的使用寿命。参考图10，锅沿上的PEEK树脂层21上和锅具本体内表面上的PEEK树脂层21上均形成有第一氟树脂23。
根据本发明的再一个具体示例，参考图11，形成在锅具本体内表面上的第一氟树脂层23具有凹凸结构，并且第一氟树脂层23的波峰与PEEK树脂层21的波峰相对，第一氟树脂层23的波谷与PEEK树脂层21的波谷相对，即设在PEEK树脂层上的第一氟树脂层的凸点形成在PEEK树脂层的凸点上，第一氟树脂层的凹点形成在PEEK树脂层的凹点上，从而使得不粘涂层表面为凹凸结构，提高该不粘涂层的使用寿命，进而提高锅具的使用寿命。
根据本发明的再一个具体示例，第一氟树脂层的厚度并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本发明的一个具体示例，第一氟树脂层的厚度为8～12微米，例如8微米、8.2微米、8.4微米、8.6微米、8.8微米、9微米、9.2微米、9.4微米、 9.6微米、9.8微米、10微米、10.2微米、10.4微米、10.6微米、10.8微米、11微米、11.2微米、11.4微米、11.6微米、11.8微米、12微米。发明人发现，若第一氟树脂层厚度过薄不能提供良好的不粘性能，而若第一氟树脂层过厚，导致第一氟树脂层容易脱落。由此，采用本申请范围的第一氟树脂层，可以在保证所形成的涂层具有优异的不粘性能的同时避免其脱落。
根据本发明的又一个具体示例，第一氟树脂层包括粘结剂树脂和氟树脂，根据本发明的一个具体示例，粘结剂树脂为选自PES、PAI、PPS、PEEK和PPSU中的至少之一，氟树脂为选自PFA、PTFE和EFP中的至少之一，优选粘结剂树脂为PEEK和PPSU中的至少之一。由此，采用该类型的粘结剂树脂和氟树脂形成的第一氟树脂层可以与PEEK树脂层良好结合，从而提供长久使用寿命的不粘涂层。需要说明的是，本领域技术人员可以根据实际需要对形成第一氟树脂涂层的粘结剂树脂和氟树脂的比例进行选择，例如，粘结剂树脂和氟树脂的质量比可以为1:4～2:1。
根据本发明的又一个具体示例，参考图12和13，不粘涂层200可以进一步包括第二氟树脂层24，根据本发明的一个具体实施例，第二氟树脂层24形成在第一氟树脂层23的至少一部分上，该第二氟树脂层24可以形成在锅沿上的第一氟树脂层23的至少一部分上和/或锅具本体100内表面上的第一氟树脂层23的至少一部分上。由此，通过将PEEK树脂层涂层与第一氟树脂层和第二氟树脂层结合，可以提供长久使用寿命的不粘涂层，进而提高锅具的使用寿命。具体的，参考图12，该第二氟树脂层24可以形成在锅沿上的第一氟树脂层23上和锅具本体100内表面上的第一氟树脂层23上。
根据本发明的又一个具体示例，参考图13，形成在锅具本体100内表面的第一氟树脂层23上的第二氟树脂层24具有凹凸结构，该第二氟树脂层24的波峰与第一氟树脂层23的波峰相对，第二氟树脂层24的波谷与第一氟树脂层23的波谷相对，即第二氟树脂层24的凸点形成在第一氟树脂层23的凸点上，第二氟树脂层24的凹点形成在第一氟树脂层23的凹点上，从而使得形成在锅具本体的涂层表面为凹凸结构，从而可以提高该不粘涂层的使用寿命，进而进一步提高锅具的使用寿命。
根据本发明的又一个具体实施例，第二氟树脂层的厚度并不受特别限制，本领域技术人员可以根据实际需要进行选择，根据本发明的一个具体示例，第二氟树脂层的厚度为8～12微米，例如8微米、8.2微米、8.4微米、8.6微米、8.8微米、9微米、9.2微米、9.4微米、9.6微米、9.8微米、10微米、10.2微米、10.4微米、10.6微米、10.8微米、11微米、11.2微米、11.4微米、11.6微米、11.8微米、12微米。发明人发现，若第二氟树脂层厚度过薄不能提供良好的不粘性能，而若第二氟树脂层过厚，导致第二氟树脂层容易脱落。由此，采用本申请范围的第二氟树脂层，可以在保证所形成的涂层具有优异的不粘性能的同时避 免其脱落。
根据本发明的又一个具体实施例，第二氟树脂层中氟树脂为选自PFA、PTFE和EFP中的至少之一。由此，可以保证锅具具有优异不粘性能的同时提高其使用寿命。
根据本公开的又一个具体实施例，为了使得锅具达到均匀加热的目的，锅具本体100底部的不粘涂层200厚度为50～300微米，例如50微米、60微米、70微米、80微米、90微米、100微米、110微米、120微米、130微米、140微米、150微米、160微米、170微米、180微米、190微米、200微米、210微米、220微米、230微米、240微米、250微米、260微米、270微米、280微米、290微米、300微米，锅具本体100侧壁的涂层200厚度为13～40微米，例如13微米、14微米、15微米、16微米、17微米、18微米、19微米、20微米、21微米、22微米、23微米、24微米、25微米、26微米、27微米、28微米、29微米、30微米、31微米、32微米、33微米、34微米、35微米、36微米、37微米、38微米、39微米、40微米。需要说明的是，如图12所示，PEEK树脂层21形成在整个锅具本体100的内表面，第一氟树脂层23形成在整个PEEK树脂层21上，第二氟树脂层24形成在第一氟树脂层23上，则上述锅具本体底部的“不粘涂层”和锅具本体内侧壁的“不粘涂层”包括PEEK树脂层、第一氟树脂层和第二氟树脂层；如图14所示，PEEK树脂层21形成在锅具本体100上底部上，第一氟树脂层23形成在PEEK树脂层21上并且覆盖锅具本体100内PEEK树脂层21没有覆盖的其余内表面，第二氟树脂层24形成在整个第一氟树脂层23上，则上述锅具本体底部的“不粘涂层”包括PEEK树脂层和形成其上的第一氟树脂层和第二氟树脂层，锅具本体内侧壁的“不粘涂层”包括第一氟树脂层和第二氟树脂层。优选，沿着锅具本体的底部到顶部的方向，锅具本体100内表面侧壁上不粘涂层200逐渐变薄。由此，可以使得锅具实现均匀加热，从而提高锅具的烹饪效果。具体的，由于炊具、内胆等都是采用底部加热，再传导到锅壁达到加热食物的目的，而且底部所接触锅铲、饭铲等刮擦较多，需要对底部进行加厚，达到耐磨效果并能提高温度传到的均匀性。因此，将该涂层喷涂成为底部厚度较厚，锅侧壁涂层薄的结构，优选是逐渐减薄的，可以最大程度上节省能源。
为了方便理解，下面对制备本公开上述实施例的锅具的方法进行详细描述。根据本公开的实施例，参考图15，该方法包括：
S100：对锅具本体内表面和锅沿进行预处理
该步骤中，对锅具本体内表面和锅沿进行预处理的步骤包括脱脂、打砂、碱洗、中和、水洗等，提高锅具的粗糙度，从而提高后续过程中锅具本体与不粘涂层的结合力。需要说明的是，上述预处理工艺属于常规工艺，本领域技术人员可以根据实际需要对具体工艺操作条件进行选择。
S200：在步骤S100得到的经过预处理的锅具本体的至少一部分内表面和锅沿的至少一部分上喷涂PEEK涂料，并且进行干燥和烧结成型
该步骤中，在步骤S100得到的经过预处理的锅具本体的至少一部分内表面和锅沿的至少一部分上喷涂PEEK涂料，并且进行干燥和烧结成型，以便在锅具本体的至少一部分内表面上形成具有明显凹凸结构的PEEK树脂层，同时在锅沿的至少一部分上形成不明显凹凸结构的PEEK树脂层，其中，形成所述锅沿上的所述不粘涂层中的PEEK树脂层中PEEK树脂含量不低于40wt％，进一步的，PEEK树脂的含量不低于70wt％，从而能够对锅具本体的内表面和锅沿进行整体喷涂，在锅具本体内表面形成具有凹凸结构的PEEK树脂层，进而降低生产成本以及工艺的复杂性。例如，可以在锅具本体的整个内表面和整个锅沿上喷涂PEEK树脂的含量不低于70wt％的PEEK涂料，从而在锅具本体的整个内表面上形成具有明显凹凸结构的PEEK树脂层，该PEEK树脂层21凸点厚度为10～70微米，在整个锅沿上形成不明显凹凸结构的PEEK树脂层，该PEEK树脂层21凸点厚度为小于8微米。由此，在煮饭过程中，该PEEK树脂层可以阻止气泡往锅壁移动，使得气泡可以直接从底部各个位置向上浮起，从而使得煮饭时沸腾更均匀，米饭的沸腾孔更多，使得米饭的平整度更佳，同时，在硬物刮擦的过程中，由于在锅具本体内表面上形成具有凹凸结构的PEEK树脂层，该具有凹凸结构的PEEK树脂层的力由凹凸结构的峰顶传递到峰底时，除了PEEK材料本身的硬度抵消以外，从峰顶传递到峰底时，表面积增大，受力面积也增大，减少了区域压强，从而可以避免锅具本体的变形，另外，具有凹凸结构的PEEK树脂层具有优异的耐腐蚀性能，使得水分子不容易渗透到锅具本体，从而有效避免了锅具本体的点状腐蚀，进而提高锅具的使用寿命，并且通过在锅具本体的整个锅沿上形成不明显凹凸结构的PEEK树脂层，在提高锅沿耐刮擦以及耐腐蚀性能的同时，可以保证锅具与密封圈的良好密封，从而提高煮饭品质。具体的，PEEK涂料可以被制作成粉末涂料或水性涂料，并且涂料中还可以加入流平剂和粘结剂等(流平剂和粘结剂为常规使用的类型，此处不再赘述)，可以采用刷涂、静电喷涂、空气压力喷枪、等离子喷涂或电泳沉积等方法喷涂PEEK涂料，然后在80～120摄氏度下干燥10～15分钟，接着在380～420摄氏度下烧结5～15分钟，PEEK涂料中的PEEK树脂在高温下熔融内聚形成连续网状的凸起层，从而在锅具本体的内表面上形成坚硬的具有凹凸结构的PEEK树脂层。发明人发现，若在锅具本体内表面喷涂的PEEK涂料中PEEK树脂含量低于70wt％时，PEEK树脂在高温下熔融内聚无法形成连续网状的凸起层，而采用PEEK树脂含量不低于70wt％的PEEK涂料可以形成连续的网状凸起，并且刮擦磨损一般发生的凸起部分，不容易造成大面积的涂层破坏，由此得到的具有凹凸结构的PEEK树脂层具有优异的耐磨性以及对锅具本体具有良好的粘结性，从而可以在与锅具本体内表面良好结合的同时提高锅具的使用寿命。根据本公开的一个实施例，在锅具本体的至 少一部分内表面上喷涂PEEK涂料的同时控制锅具本体的温度为35～55摄氏度，例如35摄氏度、36摄氏度、37摄氏度、38摄氏度、39摄氏度、40摄氏度、41摄氏度、42摄氏度、43摄氏度、44摄氏度、45摄氏度、46摄氏度、47摄氏度、48摄氏度、49摄氏度、50摄氏度、51摄氏度、52摄氏度、53摄氏度、54摄氏度、55摄氏度。发明人发现，当控制锅具本体温度为35～55摄氏度时，可以保证喷涂在锅具本体内表面上的涂层厚度适中且粒子间建立有效连接，形成规整纹路的PEEK凹凸树脂层。锅具本体100锅沿上形成的PEEK树脂层厚度为10～20微米。该范围的PEEK涂层无法建立明显的凹凸结构，形成的涂层较为平坦，从而可以保证烹饪器具的密封性。
根据本公开的实施例，参考图16，上述制备锅具的方法进一步包括：
S300：在PEEK凹凸涂层上喷涂第一氟树脂涂料，并且进行干燥和烧结成型
该步骤中，在上述得到的PEEK树脂层上喷涂第一氟树脂涂料，并且进行干燥和烧结成型，以便在PEEK树脂层的至少一部分上形成第一氟树脂层。例如，可以在锅具本体的包括锅底的部分内表面上喷涂PEEK涂料，即在锅具本体的包括锅底的部分内表面上形成PEEK树脂层21，然后在整个PEEK树脂层21以及锅具本体内PEEK树脂层21没有覆盖的其余内表面上喷涂第一氟树脂涂料，使得第一氟树脂层23形成在PEEK树脂层21的整个表面上并且覆盖锅具本体内PEEK树脂层21没有覆盖的其余内表面，并且第一氟树脂层23的波峰与PEEK树脂层21的波峰相对，第一氟树脂层23的波谷与PEEK树脂层21的波谷相对，即设在PEEK树脂层上的第一氟树脂层的凸点形成在PEEK树脂层的凸点上，第一氟树脂层的凹点形成在PEEK树脂层的凹点上，从而使得不粘涂层表面为凹凸结构，提高该不粘涂层的使用寿命，进而提高锅具的使用寿命。发明人发现，锅具本体内表面形成的PEEK树脂层21能够为第一氟树脂层23提供高强的支撑力和硬度，并且该PEEK树脂层21与第一氟树脂层22之间具有良好的结合力，而且该第一氟树脂层23具有较强的不粘性能，而且致密的PEEK树脂层21可以使得不粘涂层具有很强的耐蚀性，由此通过将PEEK树脂层21与第一氟树脂层23结合，可以提供长久使用寿命的不粘涂层。需要说明的是，该过程的干燥和烧结为本领域的常规工艺，本领域技术人员可以根据实际需要对该过程的温度和时间等参数条件进行选择，例如，在80-120℃干燥10-15min，然后在380-420℃烧结5-15min成型。
根据本公开的再一个实施例，参考图17，上述制备锅具的方法进一步包括：
S400：在第一氟树脂层上喷涂第二氟树脂涂料，并且进行干燥和烧结成型
该过程中，在上述得到的第一氟树脂层23上喷涂第二氟树脂涂料，并且进行干燥和烧结成型，以便在第一氟树脂层23的至少一部分上形成第二氟树脂层24。例如，可以在锅具本体的包括锅底的部分内表面上喷涂PEEK涂料，即在锅具本体的包括锅底的部分内表面 上形成PEEK树脂层21，然后在整个PEEK树脂层21以及锅具本体内PEEK树脂层21没有覆盖的其余内表面上喷涂第一氟树脂涂料，使得第一氟树脂层23形成在PEEK树脂层21的整个表面上并且覆盖锅具本体内PEEK树脂层21没有覆盖的其余内表面，然后在整个第一氟树脂层23的表面上喷涂第二氟树脂，使得第二氟树脂层24覆盖整个第一氟树脂层23。由此，通过将PEEK树脂层21与第一氟树脂层23和第二氟树脂层24结合，可以提供长久使用寿命的不粘涂层。需要说明的是，该过程的干燥和烧结为本领域的常规工艺，本领域技术人员可以根据实际需要对该过程的温度和时间等参数条件进行选择，例如，在80-120℃干燥10-15min，然后在380-420℃烧结5-15min成型。
需要说明的是，上述针对锅具所描述的特征和优点同样适用于该制备锅具的方法，此处不再赘述。
在本公开的第二个方面，本公开提出了一种烹饪器具。根据本公开的实施例，该烹饪器具的内锅为上述所述的锅具。发明人发现，该烹饪器具通过采用上述的锅具作为内锅，可以提高该烹饪器具的烹饪效果和使用寿命，并且该烹饪器具具有良好的密封性能，从而满足人们对高品质锅具的需求。根据本公开的一个具体示例，该烹饪器具为电饭煲、压力锅、面包机、炒锅或煎烤机。
需要说明的是，上述针对锅具以及制备锅具的方法所描述的特征和优点同样适用于该烹饪器具，此处不再赘述。
下面参考具体实施例，对本公开进行描述，需要说明的是，这些实施例仅仅是描述性的，而不以任何方式限制本公开。
实施例1
对金属锅具本体内表面进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面的粗糙度，然后空气压力喷枪将含PEKK涂料(PEEK树脂含量70wt％，炭黑(D50为2～5微米，含量1wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面，雾化压力为0.25MPa，出油量为500cc/min，喷涂距离20cm，然后在80摄氏度下干燥10分钟，经380℃烧结15min，得到内表面底部具有PEEK凹凸涂层的锅具(涂层厚度30～35微米，凸起厚度为10～40微米)，再喷涂第一氟树脂涂料(PEEK树脂含量25wt％，PTFE含量为55wt％)，雾化压力为0.2MPa，出油量为450cc/min，喷涂距离为15cm，喷涂后在80℃干燥15min使第一氟树脂涂料在PEEK涂层上熔融流平成膜，然后在380℃烧结15min成型，以便在PEEK凹凸涂层上形成第一氟树脂凹凸涂层(厚度为8～12微米)，再喷涂第二氟树脂涂料(PTFE含量89wt％、PFA含量10wt％、含二氧化钛镀层的云母1wt％)，雾化压力为0.3MPa，出油量为500cc/min，喷涂距 离为30cm，喷涂后在100℃干燥12min使第二氟树脂涂料在PEEK涂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK凹凸涂层上形成第二氟树脂凹凸涂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：50-60微米，侧壁：18-30微米。
实施例2
对金属锅具本体内表面进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面的粗糙度，然后空气压力喷枪将含PEKK涂料(PEEK树脂含量75wt％，氧化铝(D50为10～50微米，含量为10wt％))喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面，雾化压力为0.3MPa，出油量为300cc/min，喷涂距离35cm，然后在120摄氏度下干燥10分钟，经420℃烧结5min，制得内表面底部具有PEEK凹凸涂层的锅具(涂层厚度50～90微米，凸起厚度为20～30微米)，再喷涂第一氟树脂涂料(PPSU树脂含量23wt％，PFA含量为56wt％)，雾化压力为0.3MPa，出油量为300cc/min，喷涂距离为30cm，喷涂后在120℃干燥10min使第一氟树脂涂料在PEEK涂层上熔融流平成膜，然后在420℃烧结5min成型，以便在PEEK凹凸涂层上形成第一氟树脂凹凸涂层(厚度为8～12微米)，再喷涂第二氟树脂涂料(PTFE含量99wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第二氟树脂涂料在PEEK涂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK凹凸涂层上形成第二氟树脂凹凸涂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：65-120微米，侧壁：18-30微米。
实施例3
对金属锅具本体内表面进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面的粗糙度，然后空气压力喷枪将含PEKK涂料(PEEK树脂含量80wt％，炭黑(D50为2～5微米，含量8wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面，雾化压力为0.26MPa，出油量为400cc/min，喷涂距离25cm，然后在100摄氏度下干燥12分钟，经400℃烧结5min，制得内表面底部具有PEEK凹凸涂层的锅具(涂层厚度60～65微米，凸起厚度为20～30微米)，再喷涂第一氟树脂涂料(PAI含量15wt％，PFA含量为45wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第一氟树脂涂料在PEEK涂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK凹凸涂层上形成第一氟树脂凹凸涂层(厚度为8～12微米)，再喷涂第二氟树脂涂料(PFA含量99wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第二氟树脂涂料在PEEK涂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK凹凸 涂层上形成第二氟树脂凹凸涂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：75-90微米，侧壁：20-24微米。
实施例4
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量70wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.25MPa，出油量为500cc/min，喷涂距离20cm，然后在80摄氏度下干燥10分钟，经380℃烧结15min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度30～50微米，其结构示意图如图18所示，涂层粒子间已经建立起有效连接)，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)。
实施例5
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量75wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面，同时采用空气压力喷枪将含PEEK涂料(PEEK树脂含量40wt％)到锅具锅沿，空气压力喷枪的雾化压力为0.3MPa，出油量为300cc/min，喷涂距离35cm，然后在120摄氏度下干燥10分钟，经420℃烧结5min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度50～90微米，其结构示意图如图19所示，涂层粒子间紧密结合，形成规整的纹路)，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)。
实施例6
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量80wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面，同时采用空气压力喷枪将含PEEK涂料(PEEK树脂含量50wt％)到锅具锅沿，空气压力喷枪的雾化压力为0.26MPa，出油量为400cc/min，喷涂距离25cm，然后在100摄氏度下干燥12分钟，经400℃烧结5min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度90～120微米，涂层粒子间紧密结合，形成规整的纹路)，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)。
实施例7
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂 指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量85wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.28MPa，出油量为350cc/min，喷涂距离30cm，然后在90摄氏度下干燥12分钟，经390℃烧结10min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度90～120微米，涂层粒子间紧密结合，形成规整的纹路)，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)。
实施例8
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量90wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.29MPa，出油量为450cc/min，喷涂距离32cm，然后在110摄氏度下干燥12分钟，经410℃烧结10min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度60～65微米，涂层粒子间紧密结合，形成更加规整的纹路)，在锅具锅沿上形成PEEK涂层(涂层厚度10～20微米，未形成凹凸结构)。
实施例9
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量70wt％，钻石粉含量为8wt％，炭黑(D50为2～5微米)含量为10wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.25MPa，出油量为500cc/min，喷涂距离20cm，然后在80摄氏度下干燥10分钟，经380℃烧结15min，制得锅底部厚度为40-70微米的PEEK树脂层，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)，再在锅具内表面和锅沿上喷涂第一氟树脂涂料(PEEK树脂含量35wt％，PTFE含量为60wt％其余为氧化铝)，雾化压力为0.2MPa，出油量为450cc/min，喷涂距离为15cm，喷涂后在80℃干燥15min使第一氟树脂涂料在PEEK树脂层上熔融流平成膜，然后在380℃烧结15min成型，以便在PEEK树脂层上形成第一氟树脂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：50-90微米，侧壁：16-30微米，锅沿：18～32微米。
实施例10
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量75wt％，石墨烯含量为5wt％，氧化铝(D50为10～50微米)含量为20wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃) 内表面，雾化压力为0.3MPa，出油量为300cc/min，喷涂距离35cm，然后在120摄氏度下干燥10分钟，经420℃烧结5min，制得锅底部厚度为90-120微米的PEEK树脂层，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)，再在锅具内壁和锅沿上喷涂第一氟树脂涂料(PPSU树脂含量35wt％，PFA含量为60wt％)，雾化压力为0.3MPa，出油量为300cc/min，喷涂距离为30cm，喷涂后在120℃干燥10min使第一氟树脂涂料在PEEK涂层上熔融流平成膜，然后在420℃烧结5min成型，以便在PEEK树脂层上形成第一氟树脂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：100-135微米，侧壁：18-30微米，锅沿：18～32微米。
实施例11
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量75wt％，铝粉含量为2wt％，炭黑(D50为2～5微米)含量为23wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.26MPa，出油量为400cc/min，喷涂距离25cm，然后在100摄氏度下干燥12分钟，经400℃烧结5min，制得锅底部厚度为90-120微米的PEEK树脂层，在锅具锅沿上形成PEEK树脂层(涂层厚度10～20微米，未形成凹凸结构)，再在锅具内壁和锅沿喷涂第一氟树脂涂料(PPSU树脂含量45wt％，PFA含量为45wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第一氟树脂涂料在PEEK涂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK树脂层上形成第一氟树脂树脂涂层(厚度为8～12微米)，再在锅具内壁和锅沿上喷涂第二氟树脂涂料(PFA含量20wt％，PTFE80wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第二氟树脂涂料在第一氟树脂层上熔融流平成膜，然后在400℃烧结10min成型，以便在第一氟树脂层上形成第二氟树脂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：110-145微米，侧壁：25-30微米，锅沿：26～44微米。
实施例12
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量75wt％，铝粉含量为10wt％，炭黑(D50为2～5微米)含量为15wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.26MPa，出油量为400cc/min，喷涂距离25cm，然后在100摄氏度下干燥12分钟，经400℃烧结5min，制得锅底部厚度为90-120微米，侧壁厚度为8-15 微米的PEEK树脂层，锅沿处的PEEK树脂层的厚度为10～15微米，再在锅具内表面和锅沿喷涂第一氟树脂涂料(PPS树脂含量40wt％，EFP含量为45wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第一氟树脂涂料在PEEK树脂层上熔融流平成膜，然后在400℃烧结10min成型，以便在PEEK树脂层上形成第一氟树脂层(厚度为8～12微米)，再在锅具本体内表面和锅沿喷涂第二氟树脂涂料(PTFE含量100wt％)，雾化压力为0.25MPa，出油量为400cc/min，喷涂距离为25cm，喷涂后在100℃干燥12min使第二氟树脂涂料在第一氟树脂层上熔融流平成膜，然后在4000℃烧结10min成型，以便在第一氟树脂层上形成第二氟树脂层(厚度为8～12微米)，所得到的不粘涂层在锅具内表面的厚度分布为：底部：110-145微米，侧壁：25-30微米，锅沿：26～42微米。
实施例13
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量70wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.25MPa，出油量为500cc/min，喷涂距离20cm，然后在80摄氏度下干燥10分钟，经380℃烧结15min，在金属锅具内表面形成凹凸结构的PEEK树脂层(涂层厚度30～50微米，涂层粒子间已经建立起有效连接)，在锅具锅沿上形成PEEK树脂层(涂层厚度30～50微米，形成凹凸结构)。
实施例14
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量60wt％)喷涂到金属锅具(控制锅具本体温度为35～45℃)内表面和锅沿，雾化压力为0.25MPa，出油量为500cc/min，喷涂距离20cm，然后在80摄氏度下干燥10分钟，经380℃烧结15min，在金属锅具内表面难以形成凸起结构的PEEK树脂层(30～50微米)，锅沿处未形成凹凸结构的PEEK树脂层(10～20微米)。
实施例15
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量50wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.3MPa，出油量为300cc/min，喷涂距离35cm，然后在120摄氏度下干燥10分钟，经420℃烧结5min，在金属锅具内表面难 以形成凸起结构的PEEK树脂层(50～90微米)，锅沿处未形成凹凸结构的PEEK树脂层(10～20微米)。
实施例16
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量40wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.26MPa，出油量为400cc/min，喷涂距离25cm，然后在100摄氏度下干燥12分钟，经400℃烧结5min，在金属锅具内表面难以形成凸起结构的PEEK树脂层(90～120微米)，锅沿处未形成凹凸结构的PEEK树脂层(10～20微米)。
对比例1
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量30wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.28MPa，出油量为350cc/min，喷涂距离30cm，然后在90摄氏度下干燥12分钟，经390℃烧结10min，在金属锅具内表面难以形成凸起结构的PEEK树脂层(90～120微米)，锅沿处未形成凹凸结构的PEEK树脂层(10～20微米)。
对比例2
对金属锅具本体内表面和锅沿进行脱脂、打砂、碱洗、中和、水洗等操作(其中，脱脂指金属在380-420℃空烧5-15min，用高温除去表面油脂)，提高锅具本体内表面和锅沿的粗糙度，然后空气压力喷枪将含PEEK涂料(PEEK树脂含量20wt％)喷涂到金属锅具(控制锅具本体温度为45～55℃)内表面和锅沿，雾化压力为0.29MPa，出油量为450cc/min，喷涂距离32cm，然后在110摄氏度下干燥12分钟，经410℃烧结10min，在金属锅具内表面难以形成凸起结构的PEEK树脂层(90～120微米)，锅沿处未形成凹凸结构的PEEK树脂层(10～20微米)。
评价：
1、分别对实施例1-16得到锅具的导热性能、耐磨性能、耐刮性能以及锅具和锅沿的凹凸平面进行评价。
2、评价指标和测试方法：
导热性能评价方法：在锅具中注入等量的水，通过同等功率加热，到达100℃的时间排序，从一到二十评估，数值越大，到达100℃的时间越短(导热性能好)
耐磨性能评价方法：在锅具内部添加5g/L的洗洁精水溶液，覆盖锅具底部，3X7cm的3M百洁布上施加3Kg压力，以宽平行线为基准在锅底平面做水平往复移动，行程为10cm，往复一次为一个循环，每250个循环更换百洁布，检查涂层表面是否露出基材，露出基材的循环数为涂层的耐磨次数。
耐刮性能：用仪力信318硬度测试笔，选用0.75mm笔尖，调整弹簧压力为20N，在涂层表面划一条5cm以上的直线，观察划痕的深度
测试结果如表1所示：
表1实施例1-16和对比例1-2得到锅具的凹凸平面、导热性能、耐磨性能、耐刮性能
Figure PCTCN2019093080-appb-000001
以上详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (28)

  1. 一种锅具，其中，包括：
    锅具本体；
    不粘涂层，所述不粘涂层包括PEEK树脂层，所述不粘涂层形成在所述锅具本体的至少一部分内表面上，
    其中，所述锅具本体底部的所述不粘涂层厚度高于所述锅具本体侧壁的所述不粘涂层厚度。
  2. 根据权利要求1所述的锅具，其中，所述PEEK树脂层为网状连续结构。
  3. 根据权利要求1或2所述的锅具，其中，所述PEEK树脂层形成在所述锅具本体的至少一部分内表面上。
  4. 根据权利要求3所述的锅具，其中，形成在所述锅具本体内表面的所述不粘涂层中PEEK树脂层具有凹凸结构。
  5. 根据权利要求3所述的锅具，其中，所述PEEK树脂层中PEEK树脂含量不低于70wt％。
  6. 根据权利要求4所述的锅具，其中，形成在所述锅具本体内表面上的所述PEEK树脂层凸点厚度为10～70微米。
  7. 根据权利要求4所述的锅具，其中，形成在所述锅具本体内表面上的所述PEEK树脂层上相邻两个所述凸点的距离为0.1～3mm。
  8. 根据权利要求4所述的锅具，其中，形成在所述锅具本体内表面上的所述PEEK厚度为8～150微米，优选30～120微米，更优选50～90微米。
  9. 根据权利要求3所述的锅具，其中，所述锅具本体底部的所述PEEK树脂层的厚度为40～120微米，所述锅具本体侧壁的所述PEEK树脂层的厚度为8～15微米。
  10. 根据权利要求3所述的锅具，其中，形成在所述锅具本体内表面上的所述PEEK树脂层进一步分布有导热粒子，所述导热粒子为选自钻石粉、石墨烯和铝粉中的至少之一。
  11. 根据权利要求10所述的锅具，其中，所述PEEK树脂层进一步分布有填料，所述填料包括颜填料和耐磨填料。
  12. 根据权利要求11所述的锅具，其中，所述颜填料为氧化铝、二氧化硅、碳化硅和云母中的至少之一，所述耐磨填料为选自炭黑、碳酸钙、陶瓷粉和刚玉粉中的至少之一；和/或
    所述颜填料的D50不高于12微米，所述耐磨填料的D50为10～50微米。
  13. 根据权利要求1所述的锅具，其中，所述锅具本体的锅沿的至少部分上形成所述不粘涂层。
  14. 根据权利要求13所述的锅具，其中，形成在所述锅沿上的所述不粘涂层中PEEK 树脂层的厚度为10～20微米。
  15. 根据权利要求13所述的锅具，其中，形成在所述锅沿上的所述PEEK树脂层的凸点厚度为小于8微米。
  16. 根据权利要求13所述的锅具，其中，形成在所述锅沿上的所述不粘涂层中的PEEK树脂层中PEEK树脂含量不低于40wt％。
  17. 根据权利要求1或13所述的锅具，其中，所述不粘涂层进一步包括至少一层氟树脂层，所述氟树脂层形成在所述PEEK树脂层的至少一部分上。
  18. 根据权利要求17所述的锅具，其中，形成在所述锅具本体内表面上的所述氟树脂层具有凹凸结构，并且所述氟树脂层的波峰与所述PEEK树脂层的波峰相对，所述氟树脂层的波谷与所述PEEK树脂层的波谷相对。
  19. 根据权利要求17所述的锅具，其中，单层所述氟树脂层的厚度为8～12微米。
  20. 根据权利要求17所述的锅具，其中，所述不粘涂层进一步包括第一氟树脂层，所述第一氟树脂层形成在所述PEEK树脂层的至少一部分上。
  21. 根据权利要求20所述的锅具，其中，形成在所述锅具本体内表面上的所述第一氟树脂层具有凹凸结构，并且所述第一氟树脂层的波峰与所述PEEK树脂层的波峰相对，所述第一氟树脂层的波谷与所述PEEK树脂层的波谷相对。
  22. 根据权利要求20或21所述的锅具，其中，所述不粘涂层进一步包括第二氟树脂层，所述第二氟树脂层形成在所述第一氟树脂层的至少一部分上。
  23. 根据权利要求22所述的锅具，其中，形成在所述锅具本体内表面上的所述第二氟树脂层具有凹凸结构，并且所述第二氟树脂层的波峰与所述第一氟树脂层的波峰相对，所述第二氟树脂层的波谷与所述第一氟树脂层的波谷相对。
  24. 根据权利要求1所述的锅具，其中，形成在所述锅具本体内表面底部的所述不粘涂层厚度为50～300微米，优选50～140微米。
  25. 根据权利要求24所述的锅具，其中，形成在所述锅具本体内表面侧壁上的所述不粘涂层的厚度为13～40微米，优选18～30微米。
  26. 根据权利要求1所述的锅具，其中，沿着所述锅具本体的底部到顶部的方向，所述锅具本体内表面侧壁上的所述不粘涂层逐渐变薄。
  27. 一种烹饪器具，其中，所述烹饪器具的内锅为权利要求1～26中任一项所述的锅具。
  28. 根据权利要求27所述的烹饪器具，其中，所述烹饪器具为电饭煲、压力锅、面包机、炒锅或煎烤机。
PCT/CN2019/093080 2018-08-27 2019-06-26 锅具及具有其的烹饪器具 WO2020042738A1 (zh)

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