CN111363424A - High-hardness non-stick coating with metal texture and preparation method thereof - Google Patents
High-hardness non-stick coating with metal texture and preparation method thereof Download PDFInfo
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- CN111363424A CN111363424A CN202010403933.0A CN202010403933A CN111363424A CN 111363424 A CN111363424 A CN 111363424A CN 202010403933 A CN202010403933 A CN 202010403933A CN 111363424 A CN111363424 A CN 111363424A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/14—Homopolymers or copolymers of vinyl fluoride
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/06—Polysulfones; Polyethersulfones
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to a non-stick coating, in particular to a high-hardness non-stick coating with metal texture and a preparation method thereof, and belongs to the field of coatings. A high-hardness non-stick coating with metal texture comprises a bottom coating, a middle coating and a top coating, wherein the bottom coating is coated by a coating containing heat-resistant bonding resin and fluororesin, the top coating is coated by a coating taking fluororesin as main film-forming resin, the middle coating is coated by a coating mainly containing heat-resistant bonding resin, fluororesin, low-melting inorganic substance and metal powder, and thus the three coatings integrally form the non-stick coating with metal texture, high hardness and smooth continuity; the addition amount of the metal powder is 5-20% based on the total mass of the intermediate coating as 100%. The amount of metal powder added is selected according to the different hiding powers of the different metals.
Description
Technical Field
The invention relates to a non-stick coating, in particular to a high-hardness non-stick coating with metal texture and a preparation method thereof, and belongs to the field of coatings.
Background
With the development of times, the non-stick coating is more and more widely applied to various aspects such as kitchenware, household appliances and the like, people have more and more profound cognition and use of the non-stick coating, and the requirements on the performance and the appearance of the non-stick coating are improved. For example, marble-like coatings and spot coatings on the market are more and more accepted by wide consumers, especially the requirement on the durability of non-stick products on the market at present is higher, and the requirements on the scratch resistance and high-temperature hardness of the coating are higher during use. The appearance of the invention is closer to that of pure metal, the hardness of the invention is greatly improved, and the invention is more suitable for the market demand.
Since the advent of non-stick coatings, the appearance and performance of two roads developed in a staggered manner, the appearance changed from traditional black to various colors and patterns, such as spot-on coatings, and spots of various colors were applied to ordinary products to achieve the aesthetic or simulated effect of natural stone, such as granite coatings, patent nos: 201510278805. also from performance improvements such as wear resistance, hardness etc. are better adapted to the needs of the user.
Disclosure of Invention
The invention aims to provide a high-hardness non-stick coating with metal texture, the hardness of the non-stick coating can reach 3H to 4H, the wear resistance and the scratch resistance are excellent, and the appearance effect of a metal coating is achieved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a high-hardness non-stick coating with metal texture comprises a bottom coating, a middle coating and a top coating, wherein the bottom coating is coated by a coating containing heat-resistant bonding resin and fluororesin, the top coating is coated by a coating taking fluororesin as main film-forming resin, the middle coating is coated by a coating mainly containing heat-resistant bonding resin, fluororesin, low-melting inorganic substance and metal powder, and thus the three coatings integrally form the non-stick coating with metal texture, high hardness and smooth continuity; the addition amount of the metal powder is 5-20% based on the total mass of the intermediate coating as 100%. The amount of metal powder added is selected according to the different hiding powers of the different metals.
The heat-resistant binder resin of the undercoat layer is generally selected from one or more of polyamide imide (PAI), polyphenylene sulfide (pps), polyether sulfone (PES) or polyether ether ketone (PEEK).
Under the high temperature (400-.
Under the combined action of polyether sulfone and fluoroethylene propylene copolymer, a melting gradient is formed due to different melting points, so that the middle coating has the function of playing a role of up-down and has interlayer adhesion to the bottom coating and the surface coating.
The film forming materials of the intermediate coating are polyether sulfone, fluoroethylene propylene copolymer micro powder and low-melting-point inorganic matters, each material has different melting points, and a melting gradient is formed in the film forming process to generate a continuous, smooth and compact coating. After the metal powder is added into the formula, a coating similar to the related metal texture is formed on the surface of the metal substrate.
Preferably, the middle-coating heat-resistant bonding resin is selected from one or more of polyamide imide (PAI), polyphenylene sulfide (pps), polyether sulfone (PES) or polyether ether ketone (PEEK), and preferably polyether sulfone (PES).
Preferably, the middle coating fluororesin is selected from one or two of Polytetrafluoroethylene (PTFE) and fluoroethylene propylene copolymer (FEP), and the fluoroethylene propylene copolymer (FEP) micro powder with the particle size less than or equal to 5 mu m is preferred.
Preferably, the low-melting inorganic substance has a melting point of less than or equal to 400 ℃, film-forming property and Mohs hardness of 5-6. The low-melting inorganic substance preferably has a melting point within the range of 360-400 ℃ and a particle size of less than or equal to 5 mu m. In the process of forming the product, the inorganic matters with low melting points form amorphous spherical particles with amorphous phases under the action of surface tension in the phase change process, the surfaces of the particles are smooth, and some particles are aggregates formed by bonding a plurality of spherical particles together.
Preferably, the low-melting inorganic substance is selected from silicon oxide boron metal salts; preferably, the silicon oxide and the aluminum oxide are subjected to melting copolymerization crystallization to generate silicon oxide boron metal salt with a disordered structure, commonly called low-melting-point glass powder, and the glass powder has the remarkable characteristic of ultralow-temperature melting, and the melting point is less than or equal to 400 ℃.
Preferably, the metal powder is selected from one or more of copper, iron, titanium, tungsten, silver and stainless steel, and is added into the intermediate coating to form various related metal colors and improve the hardness of the intermediate coating. The grain size of the metal powder is less than or equal to 5 mu m.
Preferably, the primer layer is coated with a coating containing a heat-resistant adhesive resin, a fluororesin and a pigment filler, wherein the heat-resistant adhesive resin is one or more selected from polyamide-imide (PAI), Polyethersulfone (PES), Polyimide (PI) and polyphenylene sulfide (PPS) polyether ether ketone (PEEK), the fluororesin is one or more selected from Polytetrafluoroethylene (PTFE), fluoroethylene propylene copolymer (FEP) and perfluoroalkoxy vinyl ether copolymer (PFA), and the pigment filler is one or more selected from heat-resistant toner, silica micropowder, silicon carbide and talc. Preferably Polyethersulfone (PES) and polyamide-imide (PAI), the fluororesin preferably polytetrafluoroethylene emulsion and fluoroethylene propylene copolymer (FEP) in a ratio of preferably 4-5:1, the primer layer may be appropriately added with silicon carbide to improve wear resistance, and auxiliary agents such as leveling agent antifoaming agents and the like may be added.
Preferably, the topcoat fluororesin is one or more selected from Polytetrafluoroethylene (PTFE), fluoroethylene propylene copolymer (FEP), and perfluoroalkoxy vinyl ether copolymer (PFA). Preferably a combination of PTFE and PFA, preferably in a weight ratio of 30:1, produces a topcoat with better gloss and transparency.
Preferably, the intermediate coating formula comprises the following raw materials in percentage by weight: 15-30% of polyether sulfone, 10-20% of fluoroethylene propylene copolymer micro-powder, 20-40% of low-melting inorganic substance, 5-20% of metal powder, a proper amount of auxiliary agent and the balance of water. Further preferably, the intermediate coating formula comprises the following raw materials in percentage by weight: 15-30% of polyether sulfone, 10-20% of fluoroethylene propylene copolymer micro powder, 20-30% of low-melting-point glass powder, 5-20% of iron powder, a proper amount of auxiliary agent and the balance of water.
A preparation method of the high-hardness non-stick coating with metal texture comprises the following steps: a, pretreatment: sandblasting the metal substrate to make the surface rough;
b, preparing a coating: respectively preparing paints of a base coat, a middle coat and a top coat;
c, spraying the coating, sintering and curing:
the prepared coating is adopted to spray the treated metal base material,
firstly spraying a base coat, controlling the thickness of the coating film to be 15-20 mu m, baking the coating film for 10 +/-2 minutes at the temperature of 120 +/-5 ℃,
then spraying a middle coating, controlling the thickness of the coating to be 45-65 mu m, baking for 10 +/-2 minutes at 120 +/-5 ℃,
and finally spraying a surface coating, controlling the thickness of the coating to be 10-15 mu m, curing the coating at 400-430 ℃, and preserving the heat for 10-15min to obtain the product.
According to the method, a low-melting-point inorganic substance is added into the middle coating, and the middle coating, polyether sulfone and fluoroethylene propylene copolymer micro powder are sintered at a high temperature (400-. A photo of a high hardness non-stick coating of the present invention is shown in FIG. 1, where a is made of iron powder and b is made of titanium powder.
The invention has the beneficial effects that: the non-stick coating disclosed by the invention realizes good combination of performance and appearance, achieves excellent wear resistance, high hardness and scratch resistance, and has the appearance effect of a metal coating.
Drawings
FIG. 1 is a photograph of a high hardness non-stick coating in accordance with the present invention, wherein a is made from iron powder and b is made from titanium powder.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
The auxiliary agent refers to an auxiliary agent commonly used in the field, and comprises a leveling agent, a film forming auxiliary agent, a defoaming agent and the like, and the selection of the auxiliary agent does not belong to the important point to be explained in the invention and is not described repeatedly.
Polyethersulfone micropowder, available from BASF E-2020P, having a particle size of <5 μm;
fluoroethylene propylene copolymer micropowder, available from dupont FEP, having a particle size of <5 μm;
and selecting the glass powder with low melting point as a commercial product.
Experimental methods
The test base material selected by the experimental method is die-cast aluminum, and the surface roughness is as follows: 2 to 5 μm.
1. Abrasion resistance non-stick test
The test was described in GB/T32095.2-2015.A workpiece was mounted on the reciprocating carriage and a polishing pad was placed on the non-stick coating. The polishing pad is 3M7447B, and the contact surface with the workpiece is 3X7 cm. The weight was 1.5 kg. The grinding pad is kept fixed and passes through the center of the workpiece from all horizontal directions, and the reciprocating support is moved back and forth by 50mm +/-2.5 mm. Repeat 1000 times for one cycle, changing the polishing pad every 1000 cycles. The base material is wiped with a soft cloth with vegetable oil, and then cleaned and dried with warm water containing detergent at about 60 ℃. The cleaned flat-bottomed aluminum pot is placed on an electric furnace for heating, and the surface temperature is controlled to be 150-180 ℃. And (3) putting the eggs into the pan, after the eggs are solidified (about 2 min), shoveling the eggs by using a small shovel, wherein the egg white is intact, and no adhesive is adhered to the surface of the sample. Repeating the same position operation for 3 times; and repeating the process if the product is qualified.
2. Hardness and high temperature hardness test
The test refers to a GB/T6739 pencil hardness test method.
Examples 1 to 8:
a method for preparing a high-hardness non-stick coating with metal texture comprises the following steps:
a, pretreatment: the metal substrate is sandblasted to roughen the surface.
b, preparing a coating: respectively preparing the paint of a base coat, a middle coat and a top coat.
This example illustrates only the effect of different middle coatings on the product properties, the metal powder being selected from iron powder. The mid-coat paint formulation is shown in table 1.
The formulation of the primer coating (total weight 100%): 10% of polyether sulfone, 18% of polytetrafluoroethylene, 4% of fluoroethylene propylene copolymer, 1% of flatting agent, 3% of color paste, 4% of silicon carbide, and the balance of water and thickening agent, wherein the viscosity is controlled at 500-800 centipoises (cPs).
The top coat paint formulation (100% by weight total): 40% of polytetrafluoroethylene, 3% of perfluoroalkoxy vinyl ether copolymer, 0.5% of flatting agent, 5% of triethanolamine (glycerol can be selected) and the balance of water.
c, spraying the coating, sintering and curing:
the prepared coating is adopted to spray the treated metal base material,
firstly spraying a base coat, controlling the thickness of the coating to be 15-20 mu m, baking for 10 minutes at 120 ℃,
then spraying a middle coating, controlling the thickness of the coating to be 45-65 mu m, baking for 10 minutes at 120 ℃,
and finally spraying a surface coating, controlling the thickness of the coating to be 10-15 mu m, curing the coating at 400-430 ℃, and preserving the heat for 15min to obtain the product.
The middle coating is added with low-melting-point inorganic matters, polyether sulfone and fluoroethylene propylene copolymer micro powder, and the melting gradients are generated by different melting points of various substances through high-temperature sintering (400-. After sintering and curing, a high-hardness non-stick coating with metal texture is obtained, and the performance of the non-stick coating is shown in Table 2.
TABLE 1
TABLE 2
In view of the effects of the examples, example 6 is the most preferable example for the experimental object required by the present invention.
According to the formulation of example 6 and the method for preparing the high-hardness non-stick coating, the inventors have also tested several metal powders of copper, tungsten, silver, stainless steel, with the result that the properties are substantially identical as measured in the examples.
The present example illustrates the embodiment of the present invention with respect to the iron powder having a mass content of 10%, but the mass content of the iron powder is not limited thereto.
The addition amount of the metal powder is selected according to different covering powers of different metals, but the excessive metal powder is not favorable for the interlayer adhesion and non-stick property of the coating, and the addition amount is preferably not more than 20%.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The high-hardness non-stick coating with metal texture and the preparation method thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A high-hardness non-stick coating with metal texture comprises a bottom coating, a middle coating and a top coating, wherein the bottom coating is coated by a coating containing heat-resistant bonding resin and fluororesin, and the top coating is coated by a coating taking fluororesin as main film-forming resin, and is characterized in that: the middle coating is formed by coating paint with main components of heat-resistant bonding resin, fluororesin, low-melting inorganic matter and metal powder, so that the three layers of coatings form a non-stick coating with metal texture, high hardness and smooth continuity; the addition amount of the metal powder is 5-20% based on the total mass of the intermediate coating as 100%.
2. The high hardness non-stick coating with metallic texture according to claim 1, wherein: the middle coating heat-resistant bonding resin is selected from one or more of polyamide-imide (PAI), polyphenylene sulfide (pps), polyether sulfone (PES) or polyether ether ketone (PEEK).
3. The high hardness non-stick coating with metallic texture according to claim 1, wherein: the middle coating fluororesin is one or two selected from Polytetrafluoroethylene (PTFE) or fluoroethylene propylene copolymer (FEP).
4. The high hardness non-stick coating with metallic texture according to claim 1, wherein: the low-melting inorganic substance has a melting point of not more than 400 ℃ and Mohs hardness of 5-6.
5. The high hardness non-stick coating with metallic texture according to claim 1, wherein:
the metal powder is selected from one or more of copper, iron, titanium, tungsten, silver and stainless steel, and the particle size of the metal powder is less than or equal to 5 mu m.
6. The high hardness non-stick coating with metallic texture according to claim 1, wherein:
the bottom coating is coated by a coating containing heat-resistant bonding resin, fluororesin and pigment filler, wherein the heat-resistant bonding resin is selected from one or more of polyamide-imide (PAI), polyether sulfone (PES), Polyimide (PI) and polyphenylene sulfide (PPS) polyether ether ketone (PEEK), the fluororesin is selected from one or more of Polytetrafluoroethylene (PTFE), fluoroethylene propylene copolymer (FEP) and perfluoroalkoxy vinyl ether copolymer (PFA), and the pigment filler is one or more of heat-resistant toner, silica micropowder, silicon carbide or talcum powder.
7. The high hardness non-stick coating with metallic texture according to claim 1, wherein:
the surface coating fluororesin is one or more selected from Polytetrafluoroethylene (PTFE), fluoroethylene propylene copolymer (FEP) and perfluoroalkoxy vinyl ether copolymer (PFA).
8. The high-hardness non-stick coating with metal texture as claimed in claim 1, wherein the middle coating paint formula comprises the following raw materials by weight percent:
15 to 30 percent of polyether sulfone,
10 to 20 percent of fluoroethylene propylene copolymer micro powder,
20 to 40 percent of glass powder,
5 to 20 percent of metal powder,
a proper amount of an auxiliary agent,
the balance being water.
9. The high hardness non-stick coating with metallic texture according to claim 1, wherein: the formula of the intermediate coating comprises the following raw materials in percentage by weight:
15 to 30 percent of polyether sulfone,
10 to 20 percent of fluoroethylene propylene copolymer micro powder,
20 to 30 percent of glass powder,
5 to 20 percent of iron powder,
a proper amount of an auxiliary agent,
the balance being water.
10. A method for preparing a high hardness non-stick coating having a metallic texture as set forth in claim 1, characterized in that the method comprises the steps of:
a, pretreatment: sandblasting the metal substrate to make the surface rough;
b, preparing a coating: respectively preparing paints of a base coat, a middle coat and a top coat;
c, spraying the coating, sintering and curing:
the prepared coating is adopted to spray the treated metal base material,
firstly spraying a base coat, controlling the thickness of the coating film to be 15-20 mu m, baking the coating film for 10 +/-2 minutes at the temperature of 120 +/-5 ℃,
then spraying a middle coating, controlling the thickness of the coating to be 45-65 mu m, baking for 10 +/-2 minutes at 120 +/-5 ℃,
and finally spraying a surface coating, controlling the thickness of the coating to be 10-15 mu m, curing the coating at 400-430 ℃, and preserving the heat for 10-15min to obtain the product.
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| CN112294092A (en) * | 2020-10-23 | 2021-02-02 | 上海承一化学科技有限公司 | Pan with non-stick coating |
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| CN115121463A (en) * | 2022-06-01 | 2022-09-30 | 上海大学 | Preparation method of long-acting non-stick PEEK and PTFE composite coating and prepared composite coating |
| CN115595024A (en) * | 2021-07-08 | 2023-01-13 | 武汉苏泊尔炊具有限公司（Cn） | Composite non-stick coating, preparation method thereof and cooking utensil |
| CN116891660A (en) * | 2023-03-24 | 2023-10-17 | 浙江绍兴苏泊尔生活电器有限公司 | Non-stick coating, preparation method thereof, non-stick inner pot and cooking utensil |
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| CN107920685A (en) * | 2015-07-20 | 2018-04-17 | Seb公司 | The method of culinary products comprising fluorocarbon resin and rare earth oxide coating and the manufacture product |
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