WO2022036892A1 - 不粘涂层、不粘涂料组和烹饪设备 - Google Patents

不粘涂层、不粘涂料组和烹饪设备 Download PDF

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Publication number
WO2022036892A1
WO2022036892A1 PCT/CN2020/128978 CN2020128978W WO2022036892A1 WO 2022036892 A1 WO2022036892 A1 WO 2022036892A1 CN 2020128978 W CN2020128978 W CN 2020128978W WO 2022036892 A1 WO2022036892 A1 WO 2022036892A1
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WIPO (PCT)
Prior art keywords
stick coating
pigment
hue
stick
coating
Prior art date
Application number
PCT/CN2020/128978
Other languages
English (en)
French (fr)
Inventor
苏云健
李洪伟
曹达华
万鹏
周瑜杰
杨玲
王婷
Original Assignee
佛山市顺德区美的电热电器制造有限公司
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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
Priority to EP20950095.8A priority Critical patent/EP4197652A4/en
Priority to JP2023512452A priority patent/JP2023538926A/ja
Priority to US18/022,169 priority patent/US20230331999A1/en
Publication of WO2022036892A1 publication Critical patent/WO2022036892A1/zh

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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
    • 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
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • 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
    • A47J36/025—Vessels with non-stick features, e.g. coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/067—Metallic effect
    • B05D5/068—Metallic effect achieved by multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • B05D5/086—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers having an anchoring layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • 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
    • 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
    • C09D181/02—Polythioethers; Polythioether-ethers
    • 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
    • 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
    • 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
    • C09D5/08—Anti-corrosive paints
    • 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
    • C09D5/08—Anti-corrosive paints
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/103—Anti-corrosive paints containing metal dust containing Al
    • 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
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662—Synthetic film-forming substance
    • C09D5/1668—Vinyl-type polymers
    • 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
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1693—Antifouling paints; Underwater paints as part of a multilayer system
    • 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
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
    • 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
    • C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
    • 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
    • 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
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • B05D2202/15—Stainless steel
    • 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
    • C08K2003/0812—Aluminium
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Definitions

  • the present application relates to the technical field of cooking equipment, in particular, to non-stick coatings, non-stick coating sets and cooking equipment.
  • an object of the present application is to propose a non-stick coating that can effectively improve yellowing.
  • the present application provides a non-stick coating.
  • the non-stick coating comprises: a base coat, the color tone of at least one material in the base coat is suitable for covering the color tone of the base material; a top coat, the top coat is provided on the On one surface of the undercoat layer facing away from the base material, the topcoat layer includes a fluorine-containing resin.
  • the non-stick coating by adding a material that can cover the color tone of the base material in the primer layer, the color tone of the base material can be effectively covered, so that the non-stick coating can be effectively solved without changing the performance of the non-stick coating. The problem of high temperature yellowing of the coating and the base material provided with the non-stick coating.
  • the hue of at least one material in the primer layer is adapted to cover the change in hue of the base material.
  • the hue of at least one material in the primer layer covers at least 90% of the hue of the base material or the hue of at least one material in the primer layer covers at least 90% of the hue of the base material. Changes in the hue of the base material.
  • the primer layer has a first pigment, and the first pigment has a first hue, and the first hue is suitable for covering the hue of the base material.
  • the top coat includes a second pigment, and the hue of the second pigment is the same as or different from that of the first pigment.
  • the color difference value ⁇ E between the hue of the non-stick coating and the hue of the base material is 2-8.
  • the color difference value between the color tone of the non-stick coating and the color tone of the base material is 2.5-6.
  • the non-stick coating exhibits a hue of the second pigment or a hue between the first pigment and the second pigment.
  • the first pigment includes at least one of a white pigment and a whitish pigment
  • the second pigment includes a metallic color pigment
  • the color difference between the tone of the first pigment and the white tone is 0-30.
  • the color difference value between the tone of the first pigment and the white tone is 0-15.
  • the metallic color pigment is in a flake shape, and the orthographic projections of at least two flake pigments in a direction perpendicular to the non-stick coating layer overlap each other.
  • the color tone exhibited by the non-stick coating is substantially the same as the color tone of the base material.
  • the undercoat layer includes a first matrix resin and a first pigment dispersed in the first matrix resin, and the undercoat layer satisfies at least one of the following conditions: the first The pigment includes a white pigment, and the white pigment includes at least one of titanium, titanium compounds, zinc oxide, aluminum oxide, and mica; the particle size of the first pigment is 5-25 microns; the first matrix resin includes a polymer at least one of ether sulfone and polytetrafluoroethylene; the thickness of the primer layer is 6-30 ⁇ m; based on the total mass of the primer layer, the mass percentage content of the first pigment is 5-40% .
  • the first The pigment includes a white pigment, and the white pigment includes at least one of titanium, titanium compounds, zinc oxide, aluminum oxide, and mica; the particle size of the first pigment is 5-25 microns; the first matrix resin includes a polymer at least one of ether sulfone and polytetrafluoroethylene; the thickness of the primer layer is 6-30 ⁇ m; based on the total
  • the mass percentage content of the first pigment is 10-27% based on the total mass of the undercoat layer.
  • the topcoat layer includes the fluorine-containing resin and a second pigment dispersed in the fluorine-containing resin, and the topcoat layer satisfies at least one of the following conditions: the second pigment The pigment includes a metallic color pigment, and the metallic color pigment includes at least one of silver powder and aluminum powder; the fluorine-containing resin includes polytetrafluoroethylene; the thickness of the top coat is 8-20 ⁇ m; based on the top coat The total mass of the layer, the mass percentage content of the second pigment is 1.5-12%.
  • the non-stick coating satisfies at least one of the following conditions: the titanium compound includes titanium oxide; and the particle sizes of the silver powder and the aluminum powder are independently 5-100 ⁇ m.
  • the non-stick coating satisfies at least one of the following conditions: the primer layer further includes at least one of a high temperature resistant resin, a first surfactant, a first pH adjuster and wear-resistant particles One; the top coat further includes at least one of a second surfactant and a second pH adjuster.
  • the non-stick coating satisfies at least one of the following conditions: the high temperature resistant resin includes at least one of polyphenylene sulfide, polyamide-imide and polyetheretherketone; the The first surfactant and the second surfactant each independently include at least one of a nonionic surfactant and an anionic surfactant; the first pH adjuster and the second pH adjuster Each independently comprises at least one of ammonia water, triethylamine and diethanolamine; the wear-resistant particles comprise at least one of Al 2 O 3 , SiO 2 and SiC.
  • the first matrix resin is a mixture of polyethersulfone and polytetrafluoroethylene
  • the white pigment is titanium oxide
  • the fluorine-containing resin is polytetrafluoroethylene
  • the metallic pigment is Silver powder or aluminum powder.
  • the present application provides a set of non-stick coatings.
  • the non-stick coating group includes: a primer, the color tone of at least one material in the primer is suitable for covering the color tone of the base material; and a top coating, the top coating includes a fluorine-containing resin.
  • the non-stick coating group by adding a material suitable for covering the color tone of the base material to the primer, the yellowing of the base material provided with the coating formed by the non-stick coating group can be blocked, and the coating can be avoided. yellowing itself.
  • the primer includes:
  • the topcoat comprises:
  • the set of non-stick coatings is used to form the aforementioned non-stick coating, wherein the base coat is used to form a base coat, and the top coat is used to form the top coat Floor.
  • the present application provides a cooking apparatus.
  • the cooking device includes: a metal base material; a non-stick coating layer, the non-stick coating layer is provided on the surface of the metal base material, and the non-stick coating layer is the aforementioned non-stick coating layer.
  • a stick coat the latter formed from the previously described group of non-stick coatings.
  • the color tone of at least a part of the initial state of the cooking device is the same as that of the heating state or the color difference ⁇ E between the color tone of at least a part of the initial state of the cooking device and the color tone of the heating state is less than 4.
  • the color tone of at least a part of the initial state of the device is the same as the color tone of the heating state or the color difference ⁇ E between the color tone of at least a part of the initial state and the heating state of the cooking device is less than 2.
  • the metal substrate includes stainless steel.
  • the surface of the metal substrate is a plane, and the non-stick fluorine coating is provided on the plane; or the surface of the metal substrate has a plurality of recesses arranged at intervals, so The non-stick fluorine coating is provided on the inner wall of the depression.
  • the surface of the non-stick coating far from the metal base material is a curved surface with a middle part protruding toward the metal base material, and the non-stick coating is far away from the metal base material.
  • the surface of the metal substrate is lower than the raised surface.
  • the inner wall surface of the recessed portion is a continuous arc surface, and the thickness of the bottom of the non-stick coating in each recessed portion is greater than the thickness of the side wall of the non-stick coating.
  • the thickness of the non-stick coating gradually increases in the direction from the top to the bottom of the recessed portion.
  • the color of the non-stick coating is substantially the same as the color of the raised surface.
  • the non-stick coating is configured as a continuous arc surface, and both the base coat and the top coating in the non-stick coating are configured as continuous arc surfaces.
  • FIG. 1 is a schematic structural diagram of a non-stick fluorine coating according to an embodiment of the present application.
  • FIG. 2 is a partial structural schematic diagram of a cooking apparatus according to an embodiment of the present application.
  • FIG. 3 is a partial structural schematic diagram of a cooking apparatus according to another embodiment of the present application.
  • the present application provides a non-stick coating.
  • the non-stick coating includes: a primer layer 10 , the color tone of at least one material in the primer layer 10 is suitable for covering the color tone of the base material; the top coat layer 20 , so The top coat layer 20 is provided on a surface of the primer coat layer away from the base material, and the top coat layer 20 includes a fluorine-containing resin.
  • the non-stick coating by adding a material suitable for covering the color tone of the base material into the primer layer, the non-stick coating and the provision of the non-stick coating can be effectively solved without changing the performance of the non-stick coating.
  • the problem of high temperature yellowing of the base material has been greatly improved, and the yellowing resistance and appearance effect of the non-stick coating system have been greatly improved, thereby expanding the application range of the non-stick coating.
  • the hue of at least one material in the primer layer is adapted to cover the change in hue of the base material.
  • the non-stick coating can effectively cover the yellowing of the base material.
  • the hue of at least one material in the base coat covers at least 90% of the hue of the base material or the hue of at least one material in the base coat covers at least 90% of the hue of the base material change. Therefore, the non-stick coating has a better effect of covering the yellowing of the base material.
  • the primer layer has a first pigment, and the first pigment has a first hue, and the first hue is suitable for covering the hue of the base material. Therefore, even if the base material yellows during use, it can be effectively covered by the primer layer, and the yellowing of the base material cannot be seen from the appearance of the product, so that the yellowing problem of the base material can be effectively improved. Further, the interference of the color tone of the substrate with the color tone of the non-stick coating system can be reduced, thereby improving the appearance effect of the non-stick coating system.
  • the first pigment may include at least one of white pigment and off-white pigment kind.
  • the white pigment may include at least one of titanium, titanium compounds, zinc oxide, aluminum oxide, and mica, and specifically, the titanium compound may include titanium oxide.
  • titanium oxide is a white inorganic pigment with non-toxic, optimal opacity, optimal whiteness and brightness, not only strong adhesion, not easy to chemically change, but also always white, and will not pass through Yellowing occurs after high temperature. As a result, the material sources are extensive, the effect of blocking yellowing is good, and the non-stick performance of the non-stick coating and its bonding force with the base material are not affected.
  • the color difference between the tone of the first pigment and the white tone may be 0-30, specifically 0-15, such as 0, 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 25, 30, etc.
  • the effect of its own resistance to yellowing and the effect of blocking yellowing are better.
  • the particle size of the first pigment may be 5-25 microns, specifically 5 microns, 8 microns, 10 microns, 12 microns, 5 microns, 8 microns, 0 microns, 22 microns, 25 microns, etc.
  • the color rendering effect, the anti-yellowing effect and the effect of covering yellowing are better, and it is easy to disperse, and can well cooperate with other components in the non-stick coating, thereby facilitating the application of the non-stick coating. preparation, while helping to improve the quality of non-stick coatings.
  • the particle size of the first pigment is larger than the above-mentioned range, the dispersibility of the first pigment in the coating for forming the primer layer is poor, thereby resulting in poor effect of covering yellowing.
  • the mass percentage content of the first pigment is 5-40%, specifically 12-27%, specifically 5%, 8%, 10% %, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 30%, 32%, 35%, 8%, 40%, etc.
  • the non-stick coating has the best color effect, hiding power, and anti-corrosion performance. If it is too large, it will affect the adhesion and anti-corrosion performance of the non-stick coating. If it is too small, the hiding power of the non-stick coating will be reduced. .
  • the primer layer may include a first matrix resin, and the first pigment may be dispersed in the first matrix resin.
  • the first matrix resin may include at least one of polyethersulfone and polytetrafluoroethylene. Therefore, it can have good bonding force with the base material provided with the non-stick coating, and at the same time have good non-stick performance.
  • the primer layer may further include at least one of a high temperature resistant resin, a first surfactant, a first pH adjuster and wear-resistant particles.
  • the first matrix resin and the high-temperature-resistant resin have strong bonding force, which can be well combined with the matrix material provided with the non-stick coating, and at the same time have a good anti-corrosion effect.
  • the high-temperature-resistant resin can include a polymer At least one of phenylene sulfide (PPS), polyamide-imide (PAI) and polyetheretherketone (PEEK); the first surfactant may include nonionic surfactants and anionic surfactants at least one of ; the first pH adjuster may include at least one of ammonia water, triethylamine and diethanolamine; and the wear-resistant particles include at least one of Al 2 O 3 , SiO 2 and SiC.
  • the above-mentioned components can make the non-stick coating have a better use effect.
  • the first surfactant can make the coating more uniform for preservation and reduce the surface energy of the coating for construction, and the first pH adjuster can improve and stabilize the coating.
  • PH value so that the viscosity of the coating is stable and conducive to construction, and the wear-resistant particles can greatly improve the wear resistance and service life of the non-stick coating.
  • the thickness of the undercoat layer may be 6-30 ⁇ m, specifically 6 ⁇ m, 10 ⁇ m, 15 ⁇ m, 20 ⁇ m, 25 ⁇ m, 30 ⁇ m, and the like. Within this thickness range, the anti-corrosion and wear-resistant properties of the coating are the best. If the coating is too thick, it is easy to crack and sag during spraying. If the coating is too thin, the anti-corrosion and wear-resistant properties of the coating will decrease.
  • the topcoat may include a second pigment. Adding the second pigment in the top coat can make the pigment in the top coat cover the part of the base material that is not covered by the first pigment in the base coat, and the pigment distribution has a certain difference in the two coats, thereby improving the The coverage of the shade of the base material.
  • the hue of the second pigment in the topcoat may be the same as or different from the hue of the first pigment. Therefore, the yellowing problem of the non-stick coating and the base material provided with the non-stick coating can be better improved through the combination of the first pigment and the second pigment, and the non-stick coating system can present a better Tint to enhance the appearance of non-stick coating systems.
  • the use of pigments of different shades improves the appearance of the non-stick coating system on the one hand, and the addition of a second pigment different from the first pigment in the top coat can utilize the superimposed color rendering effect of different shades to improve the adhesion to the substrate. Material shades of coverage.
  • the second pigment includes a metallic color pigment. Therefore, the second color is a metallic color, which can make the top coat exhibit metallic luster, has strong covering power, and can effectively improve the influence of yellowing.
  • the metallic color pigment is in a flake shape, and the orthographic projections of at least two flake pigments in a direction perpendicular to the non-stick coating layer overlap each other.
  • the metallic color of the coating can be improved, the phenomenon of uneven color can be avoided, and the possible color tone of the unmasked base material can be reduced, further, the appearance of variegation can be reduced, and the appearance of the product can be improved.
  • the metallic color pigment may include at least one of silver powder and aluminum powder. In some specific examples, the metallic color pigment may include at least one of silver paste and aluminum silver paste.
  • the main components of aluminum silver paste are snow flake-like aluminum particles and petroleum solvent, which are paste-like and are characterized by smooth and flat surface of aluminum flakes, concentrated particle size distribution, regular shape, excellent light reflection ability, metallic luster, and relatively Strong covering power.
  • the particle sizes of the silver powder and the aluminum powder are independently 2-70 ⁇ m, specifically 3-20 ⁇ m, specifically 2 ⁇ m, 3 ⁇ m, 5 ⁇ m, 10 ⁇ m, 20 ⁇ m, 30 ⁇ m, 40 ⁇ m, 50 ⁇ m, 60 ⁇ m. , 70 ⁇ m, etc.
  • the non-stick fluorine coating has an excellent effect of improving yellowing.
  • the mass percentage content of the second pigment is 1.5-12%, specifically 1.5%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, etc.
  • the appearance of the coating is the best and does not affect other properties of the coating. If it is too much, it will be suspended too much, which will affect the non-stickiness and bonding force of the coating. The larger the difference, the less the desired appearance will be achieved.
  • the fluorine-containing resin in the topcoat layer may include polytetrafluoroethylene (PTFE).
  • PTFE resin mainly plays a non-stick function, which can give the non-stick coating a good non-stick effect.
  • the thickness of the topcoat layer may be 8-20 ⁇ m, specifically 8 ⁇ m, 10 ⁇ m, 12 ⁇ m, 15 ⁇ m, 18 ⁇ m, 20 ⁇ m, and the like. Within this thickness range, the non-stick and anti-corrosion properties of the coating are the best. If the coating is too thick, it will crack, and if it is too thin, the non-stick properties will decrease.
  • the topcoat layer may further include at least one of a second surfactant and a second pH adjuster according to usage requirements.
  • the second surfactant may include at least one of a nonionic surfactant and an anionic surfactant;
  • the second pH adjuster may include at least one of ammonia water, triethylamine and diethanolamine .
  • the second surfactant can reduce the surface energy of the coating to facilitate construction, promote the stability of the coating and facilitate preservation, and the second pH adjuster can stabilize the pH value of the coating.
  • the first matrix resin is a mixture of polyethersulfone and polytetrafluoroethylene
  • the white pigment is titanium oxide
  • the second matrix resin is polytetrafluoroethylene
  • the color pigment is silver paste or aluminum silver paste. Therefore, the coordination and synergy between different matrix resins and pigments make the non-stick coating better in hiding ability and better in improving yellowing effect.
  • the top coat may cover the entire surface of the base coat, or may only cover part of the surface of the base coat.
  • the non-stick coating can assume the hue of the second pigment or a hue between the first pigment and the second pigment (ie, the non-stick coating assumes the first The superimposed effect of the color of the pigment and the color of the second pigment); and when the topcoat covers only part of the surface of the basecoat, the non-stick coating exhibits substantially the same hue as the base material. Thereby, the color tone of the outer surface of the product can be kept consistent, and the consistency and aesthetics of the appearance can be improved.
  • the color difference value ⁇ E between the hue of the non-stick coating and the hue of the base material may be 2-8, specifically 2.5- 6, such as 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, etc.
  • the color difference between the non-stick coating and the specific material can be reduced, and the consistency of the overall appearance can be improved.
  • the present application provides a set of non-stick coatings.
  • the non-stick coating group includes: a primer, the color tone of at least one material in the primer is suitable for covering the color tone of the base material; and a top coating, the top coating includes a fluorine-containing resin.
  • the coating group by adding a material suitable for covering the color tone of the base material to the primer, the yellowing of the base material provided with the coating formed by the non-stick coating group can be blocked, and the yellowing of the coating itself can be avoided. .
  • the primer comprises: 30-50 parts by weight of a first matrix resin dispersion; 10-30 parts by weight of a high temperature resistant resin; 20-50 parts by weight of a first solvent; the first pigment 1 ⁇ 12 parts by weight; 0-10 parts by weight of the first surfactant; 0-50 parts by weight of deionized water; 0-1 part by weight of the first pH adjuster; 0-3 parts by weight of wear-resistant particles.
  • the coating has the best anticorrosion performance, wear resistance and hiding power.
  • the top coating may include: 45-70 parts by weight of a fluorine-containing resin emulsion; 3-20 parts by weight of a second solvent; 0.5-5 parts by weight of the second pigment; ⁇ 10 parts by weight; 10-50 parts by weight of deionized water; 0-1 part by weight of the second pH adjuster.
  • the above-mentioned components and content ranges, the anti-corrosion performance, non-stick performance and color effect of the coating are the best.
  • the set of non-stick coatings is used to form the aforementioned non-stick coating, wherein the base coating is used to form the base coating, and the top coating is used to form the top coating .
  • each component in the non-stick coating group may be the same as the corresponding components in the previous non-stick coating, which will not be repeated here.
  • the first solvent and the second solvent are mainly used for dissolving the resin.
  • the first solvent and the second solvent may independently include N-methylpyrrolidone (NMP), ethanol, isopropyl At least one of alcohol, propylene glycol, glycerol, toluene, xylene and diethylene glycol ethyl ether. Therefore, the dissolution effect is better and the cost is lower.
  • the present application provides a method of making the aforementioned non-stick coating.
  • the method includes: stirring and mixing a first solvent, a first surfactant, deionized water, and a first pH adjusting agent to obtain a first mixture; adding a first matrix to the first mixture resin dispersion liquid and temperature-resistant resin, and stir evenly to obtain a second mixture; add the first pigment and wear-resistant particles to the second mixture to obtain a primer; mix the second solvent, second surfactant, deionized The water and the second pH adjuster are stirred and mixed to obtain a third mixture; the fluororesin emulsion is added to the third mixture and stirred evenly to obtain a fourth mixture; the second pigment is added to the fourth mixture to obtain Topcoat; apply the primer by means of compressed air spraying and carry out first baking and curing to obtain a primer; apply the topcoat on the surface of the primer by means of compressed air spraying and carry out the first The second baking is cured to obtain a
  • the method may include the following steps: adding an appropriate proportion of the first solvent, the first surfactant, deionized water, and the first pH adjuster into the stirred container for stirring and mixing, and then adding the PES dispersion liquid. , temperature-resistant resin, after stirring evenly, then add titanium oxide and wear-resistant particles to form a primer, and then use compressed air spraying to apply to the surface of rough and clean metal substrates, moderately bake, solidify and cool to obtain a primer.
  • the film thickness of the primer layer can be 6 to 30 microns; add an appropriate proportion of the second solvent, the second surfactant, deionized water, and the second pH adjuster to the stirred container for stirring and mixing, and then add After the PTFE emulsion is evenly stirred, add aluminum-silver paste or silver paste to form a top coating, which can then be sprayed with compressed air on the surface of the base coat, moderately baked, solidified and cooled to obtain a top coat, a top coat
  • the thickness of the film can be 8 to 20 microns.
  • the present application provides a cooking apparatus.
  • the cooking device includes: a metal substrate 100;
  • the non-stick coating 200 is the aforementioned non-stick coating, or is formed by the aforementioned non-stick coating group.
  • the non-stick coating 200 may include a primer coating 10 and a top coating 20 . While the cooking device has good non-stick performance, yellowing does not occur after high temperature.
  • the specific type of the cooking equipment is not particularly limited, and can be any cooking equipment, such as but not limited to pots (wok, soup pot, stew pot, milk pot, frying pan, etc.), rice cooker inner pot, pressure cooker inner pot Wait, I won't go into details here.
  • the color tone of at least a part of the initial state of the cooking device is the same as the color tone of the heating state.
  • the color difference ⁇ E between the color tone of at least a part of the cooking device in the initial state and the color tone in the heating state is less than 4, preferably, ⁇ E is less than 2, and specifically, ⁇ E may be 3.5, 3, or 2.5 , 2, 1.5, 1, 0.5, 0.2, 0, etc. Thereby, the appearance consistency of the cooking apparatus is good.
  • the metal substrate may include stainless steel.
  • stainless steel is prone to yellowing after being subjected to high temperature, the use of the stainless steel substrate in combination with the above-mentioned non-stick coating or non-stick coating can well improve the yellowing problem of the metal substrate and the coating itself.
  • the surface of the metal substrate 100 may be a plane, and the non-stick coating 200 is disposed on the plane. As a result, it has excellent non-stick properties.
  • the surface of the metal substrate 100 has a plurality of concave portions 310 arranged at intervals, and a convex surface 320 is formed between the plurality of the concave portions 310 , and the non-stick coating
  • the layer 200 is provided on the inner wall of the recessed portion 310 .
  • the adhesion of the non-stick coating can be improved, and the scratch resistance of the non-stick coating can be reduced, and the external force is not easy to contact the non-stick coating in the depression, thereby improving the adhesion of the non-stick coating in the depression, keeping the Long non-stick performance, better abrasion resistance and long life.
  • the surface 201 of the non-stick coating 200 away from the metal substrate 100 is a curved surface whose middle portion is convex toward the metal substrate 100 , and the surface of the non-stick coating 200 away from the metal substrate 100 is lower than the raised surface 320 .
  • the probability of the coating being scraped off can be reduced, the adhesion of the coating on the concave portion can be improved, and an air layer can be formed between the top of the coating and the raised surface, thereby improving the non-stick performance to food.
  • a hot air layer can be formed above the coating layer during heating, so as to promote uniform heating of the food.
  • the inner wall surface of the recessed portion 310 is a continuous arc surface, and the thickness H1 of the bottom of the non-stick coating 200 in each recessed portion 310 is greater than the thickness H1 of the non-stick coating 200 in each recessed portion 310 .
  • Thickness H2 of the sidewall of the stick coat 200 . Therefore, the inner wall surface of the depression is a continuous arc surface, which can reduce the accumulation of the coating on the lower part of the depression, promote the flow of the coating to the bottom of the depression, and reduce the accumulation of heat at the coating of the depression, thereby avoiding the formation of hot cracks. And reduce the corrosion resistance there.
  • the thickness of the bottom of the coating is greater than the thickness of the side wall of the coating, which can improve the heat transfer capability of the bottom of the coating, thereby improving the overall thermal conductivity of the coating.
  • the thickness of the non-stick coating 200 gradually increases. Thereby, the heat transfer capability of the bottom of the coating can be improved, thereby improving the thermal conductivity of the coating as a whole.
  • the non-stick coating 200 is configured as a continuous arc surface, and both the base coating 10 and the top coating 20 in the non-stick coating are configured as continuous arc surfaces. As a result, the accumulation of energy in the coating can be avoided, thereby reducing the formation of hot corrosion and improving the corrosion resistance of the coating.
  • the color of the non-stick coating is substantially the same as the color of the raised surface. Therefore, the consistency and aesthetics of the appearance of the cooking device can be maintained.
  • the preparation method of the non-stick coating is:
  • Undercoat layer 30 parts by weight of PES; 30 parts by weight of PPS; 35 parts by weight of NMP; 15 parts by weight of titanium oxide, the particle size of titanium oxide is 10 microns; 25 parts by weight of deionized water; 0.5 parts by weight of ammonia water; Al 2 O 3 3 parts by weight; the thickness of the formed undercoat layer is 6 microns, wherein the mass percentage content of titanium oxide in the undercoat layer is 10%.
  • Top coat 50 parts by weight of PTFE; 5 parts by weight of NMP; 10 parts by weight of nonionic surfactant; 25 parts by weight of deionized water; the thickness of the formed top coat is 8 microns.
  • PTFE coating stainless steel as the substrate, wherein the thickness of the PTFE coating is 14 microns.
  • the primer layer is the same as in Example 1.
  • Top coat 60 parts by weight of PTFE; 7 parts by weight of NMP; 1.2 parts by weight of aluminum powder, the particle size of the aluminum powder is 3 microns; 5 parts by weight of nonionic surfactant; 40 parts by weight of deionized water; the thickness of the formed top coat is 8 microns, wherein the mass percentage of aluminum powder in the topcoat is 3%.
  • Example 2 The same as Example 2, the difference is that the amount of titanium oxide in the primer layer is 40 parts by weight, and the mass percentage of titanium oxide in the primer layer is 27%.
  • Example 2 The same as Example 2, the difference is that the amount of titanium oxide in the primer layer is 6 parts by weight, and the mass percentage of titanium oxide in the primer layer is 4%.
  • the difference is that the amount of titanium oxide in the primer layer is 60 parts by weight, and the mass percentage of titanium oxide in the primer layer is 45%.
  • the difference is that the particle size of titanium oxide in the undercoat layer is 40 microns.
  • Example 2 The same as Example 2, the difference is that the thickness of the primer layer is 30 microns.
  • Example 2 The same as Example 2, the difference is that the thickness of the primer layer is 40 microns.
  • Example 2 The same as Example 2, the difference is that the thickness of the primer layer is 4 microns.
  • Example 2 The same as Example 2, the difference is that the amount of aluminum powder in the top coat is 1 part by weight, and the mass percentage of aluminum powder in the top coat is 2%.
  • Example 2 Same as Example 2, the difference is that the amount of aluminum powder in the topcoat is 2 parts by weight, and the mass percentage of aluminum powder in the topcoat is 5%.
  • Example 2 Same as Example 2, the difference is that the amount of aluminum powder in the topcoat is 0.5 parts by weight, and the mass percentage of aluminum powder in the topcoat is 1%.
  • Example 2 Same as Example 2, the difference is that the amount of aluminum powder in the topcoat is 8 parts by weight, and the mass percentage of aluminum powder in the topcoat is 20%.
  • the difference is that the thickness of the top coat is 20 microns.
  • the difference is that the thickness of the top coat is 5 microns.
  • the difference is that the thickness of the top coat is 30 microns.
  • the difference is that the particle size of the aluminum powder is 20 microns.
  • Example 2 The same as Example 1, the difference is that the titanium oxide in the undercoat layer is replaced by 15 parts by weight of zinc oxide.
  • Example 2 The same as Example 1, the difference is that the titanium oxide in the undercoat layer is replaced by 15 parts by weight of aluminum oxide.
  • Example 2 The same as Example 2, the difference is that the titanium oxide in the undercoat layer is replaced by 15 parts by weight of zinc oxide.
  • Example 2 The same as Example 2, the difference is that the titanium oxide in the undercoat layer is replaced by 15 parts by weight of aluminum oxide.
  • Example 2 Same as Example 2, the difference is that the aluminum powder in the top coat is replaced by 1.2 parts by weight of silver powder.
  • test method and rating standard of adhesion are as follows (one hundred grid test):
  • Test method Use a 100-grid knife to draw 10 ⁇ 10 (100) 1mm ⁇ 1mm small grids on the surface of the test sample, and each line should be as deep as the base coat of the non-stick coating; Brush the debris clean; use 3M600 adhesive tape or equivalent adhesive tape to firmly adhere to the small grid to be tested, and wipe the tape with an eraser to increase the contact area and strength between the tape and the tested area; static 3-5 After one minute, grab one end of the tape by hand, and quickly pull off the tape in the vertical direction (90°/60°), and perform the same test twice at the same position. Adhesion judgment standard:
  • Level 0 The cutting edge is completely smooth without falling off.
  • Grade 1 There is a little coating peeling off at the intersection of the incision, but the affected area of the cross-cut cannot be significantly greater than 5%.
  • Grade 2 There is coating peeling at the intersection of the incision or along the edge of the incision, and the affected cross-cut area is significantly greater than 5%, but not significantly greater than 15%.
  • Class 3 The coating has been partially or completely peeled off in large fragments along the cutting edge and or partially or completely peeled off on different parts of the lattice.
  • the affected cross-cut area is significantly greater than 15%, but not significantly greater than 35%.
  • Level 4 The coating peels off in large fragments along the cutting edge and or some squares are partially or completely peeled off, and the affected cross-cut area is significantly greater than 35%, but not significantly greater than 65%.
  • Grade 5 The degree of peeling exceeds Grade 4.
  • Test method 1. Pour an appropriate amount of vegetable oil into the cooking utensil, wipe the non-stick surface with a soft cloth until it is evenly coated;
  • Judgment standard for non-stickiness Use a plastic shovel with a thickness of 0.2mm to 0.5mm to remove the eggs without damage and leave no residue. 10 or more scrambled eggs in a row are taken out without damage and no residue is left, and the non-stickiness is 1; Residual residue, non-stickiness is grade 3; eggs cannot be completely removed but no residue, non-stickiness is grade 4; eggs cannot be completely removed and there are residues, non-stickiness is grade 5.
  • the color difference value between the unheated sample and the reference substrate mainly reflects the color of the non-stick coating itself, and the smaller the change in the color difference value between the sample and the reference substrate before and after heating (including larger and smaller), indicating that The non-stick coating has better yellowing resistance and hiding power. Based on this, it can be seen from the above data:
  • the non-stick coating adds materials with appropriate content and particle size to the base coating and is suitable for covering the hue of the base material, and forms a base coating with a moderate thickness
  • the performance of the non-stick coating can be maintained without changing the performance of the non-stick coating. It can effectively solve the problem of high temperature yellowing of the non-stick coating and the base material on the basis of high temperature heating (350 degrees Celsius), and the color difference of the sample is small, which can meet the needs of cooking equipment.
  • first and second are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plurality means two or more, unless otherwise expressly and specifically defined.

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Abstract

提出了不粘涂层、不粘涂料组和烹饪设备。该不粘涂层包括：底涂层，所述底涂层中至少一种材料的色调适于遮盖基体材料的色调；面涂层，所述面涂层设在所述底涂层背离基体材料的一个表面上，所述面涂层中包括含氟树脂。

Description

不粘涂层、不粘涂料组和烹饪设备 技术领域
本申请涉及烹饪设备技术领域，具体的，涉及不粘涂层、不粘涂料组和烹饪设备。
背景技术
具有不粘功能的烹饪设备表面常常采用涂覆不粘涂层的方式进行不粘涂层可起到不粘作用的，但经过高温后会发生黄变，同时烹饪设备的金属基材经过高温后也会发生不同程度的黄变，这种黄变现象大大限制了不粘涂层的颜色选择范围。因而，目前具有不粘功能的烹饪设备的相关技术仍有待改进。
发明内容
本申请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，本申请的一个目的在于提出一种能够有效改善黄变的不粘涂层。
在本申请的一个方面，本申请提供了一种不粘涂层。根据本申请的实施例，该不粘涂层包括：底涂层，所述底涂层中至少一种材料的色调适于遮盖基体材料的色调；面涂层，所述面涂层设在所述底涂层背离基体材料的一个表面上，所述面涂层中包括含氟树脂。该不粘涂层中，通过在底涂层中加入能够遮盖基体材料色调的材料，能够有效遮盖基体材料的色调，从而可以在不改变不粘涂层性能的基础上，有效地解决了不粘涂层以及设置有该不粘涂层的基体材料的高温黄变问题。
根据本申请的实施例，所述底涂层中至少一种材料的色调适于遮盖所述基体材料色调的改变。
根据本申请的实施例，所述底涂层中至少一种材料的色调至少遮盖90％的所述基体材料的色调或所述底涂层中至少一种材料的色调至少遮盖90％的所 述基体材料色调的改变。
根据本申请的实施例，所述底涂层中具有第一颜料，所述第一颜料具有第一色调，所述第一色调适用于遮盖所述基体材料的色调。根据本申请的实施例，所述面涂层中包括第二颜料，所述第二颜料的色调与所述第一颜料的色调相同或不同。
根据本申请的实施例，以所述基体材料的色调为基准，所述不粘涂层的色调与所述基体材料的色调之间的色差值ΔE＝2-8。
根据本申请的实施例，所述不粘涂层的色调与所述基体材料的色调之间的色差值为2.5-6。
根据本申请的实施例，所述不粘涂层呈现所述第二颜料的色调或者所述第一颜料和所述第二颜料之间的色调。
根据本申请的实施例，所述第一颜料包括白色颜料和偏白色颜料中的至少一种，所述第二颜料包括金属色颜料。
根据本申请的实施例，以白色调为基准，所述第一颜料的色调与所述白色调之间的色差值为0-30。
根据本申请的实施例，以白色调为基准，所述第一颜料的色调与所述白色调之间的色差值为为0-15。
根据本申请的实施例，所述金属色颜料呈片状，且至少两个片状颜料在垂直于所述不粘涂层方向上的正投影相互重叠。
根据本申请的实施例，所述不粘涂层呈现的色调与所述基体材料的色调基本相同。
根据本申请的实施例，所述底涂层包括第一基体树脂和分散在所述第一基体树脂中的第一颜料，且所述底涂层满足以下条件的至少之一：所述第一颜料 包括白色颜料，所述白色颜料包括钛、钛化合物、氧化锌、氧化铝和云母中的至少一种；所述第一颜料的粒径为5-25微米；所述第一基体树脂包括聚醚砜和聚四氟乙烯中的至少一种；所述底涂层的厚度为6-30μm；基于所述底涂层的总质量，所述第一颜料的质量百分含量为5-40％。
根据本申请的示例，基于所述底涂层的总质量，所述第一颜料的质量百分含量为10-27％。
根据本申请的实施例，所述面涂层包括所述含氟树脂和分散在所述含氟树脂中的第二颜料，且所述面涂层满足以下条件的至少之一：所述第二颜料包括金属色颜料，所述金属色颜料包括银粉和铝粉中的至少一种；所述含氟树脂包括聚四氟乙烯；所述面涂层的厚度为8-20μm；基于所述面涂层的总质量，所述第二颜料的质量百分含量为1.5-12％。
根据本申请的实施例，该不粘涂层满足以下条件的至少之一：所述钛化合物包括氧化钛；所述银粉和铝粉的粒径各自独立的为5-100μm。
根据本申请的实施例，该不粘涂层满足以下条件的至少之一：所述底涂层中还包括耐高温树脂、第一表面活性剂、第一pH调节剂和耐磨粒子中的至少一种；所述面涂层中还包括第二表面活性剂和第二pH调节剂中的至少一种。
根据本申请的实施例，该不粘涂层满足以下条件的至少之一：所述耐高温树脂包括聚苯硫醚、聚酰胺—酰亚胺和聚醚醚酮中的至少一种；所述第一表面活性剂和所述第二表面活性剂各自独立的包括非离子型表面活性剂和阴离子型表面活性剂中的至少一种；所述第一pH调节剂和所述第二pH调节剂各自独立的包括氨水、三乙胺和二乙醇胺中的至少一种；所述耐磨粒子包括Al 2O 3，SiO 2和SiC中的至少一种。
根据本申请的实施例，所述第一基体树脂为聚醚砜和聚四氟乙烯的混合 物，所述白色颜料为氧化钛；所述含氟树脂为聚四氟乙烯，所述金属色颜料为银粉或铝粉。
在本申请的另一方面，本申请提供了一种不粘涂料组。根据本申请的实施例，该不粘涂料组包括：底涂料，所述底涂料中至少一种材料的色调适于遮盖基体材料的色调；面涂料，所述面涂料中包括含氟树脂。该不粘涂料组中，通过在底涂料中添加可以适于遮盖基体材料的色调的材料，既可以遮挡设置有该不粘涂料组形成的涂层的基体材料的黄变，也可以避免涂层本身的黄变。
根据本申请的实施例，所述底涂料包括：
Figure PCTCN2020128978-appb-000001
根据本申请的实施例，所述面涂料包括：
Figure PCTCN2020128978-appb-000002
根据本申请的实施例，所述不粘涂料组用于形成前面所述的不粘涂层，其中，所述底涂层用于形成底涂层，所述面涂料用于形成所述面涂层。
在本申请的又一方面，本申请提供了一种烹饪设备。根据本申请的实施例，该烹饪设备包括：金属基材；不粘涂层，所述不粘涂层设置在所述金属基材的表面上，所述不粘涂层为前面所述的不粘涂层，后者是由前面所述的不粘涂料组形成的。
根据本申请的实施例，烹饪设备的至少一部分初始状态的色调与加热状态的色调相同或所述烹饪设备的至少一部分初始状态的色调与加热状态的色调的色差值ΔE小于4。
根据本申请的示例，设备的至少一部分初始状态的色调与加热状态的色调相同或所述烹饪设备的至少一部分初始状态的色调与加热状态的色调的色差值ΔE小于2。
根据本申请的实施例，所述金属基材包括不锈钢。
根据本申请的实施例，所述金属基材的表面为平面，所述不粘氟涂层设置在所述平面上；或者所述金属基材的表面上具有多个间隔设置的凹陷部，所述不粘氟涂层设置在所述凹陷部的内壁上。
根据本申请的实施例，每个所述凹陷部中，所述不粘涂层远离所述金属基材的表面为中部向所述金属基材凸起的曲面，且所述不粘涂层远离所述金属基材的表面低于所述凸起的表面。
根据本申请的实施例，所述凹陷部的内壁面为连续的弧面，每个所述凹陷部中的所述不粘涂层的底部的厚度大于所述不粘涂层的侧壁的厚度。
根据本申请的实施例，每个所述凹陷部中，在所述凹陷部的顶部至底部的方向上，所述不粘涂层的厚度逐渐增大。
根据本申请的实施例，所述不粘涂层颜色与所述凸起的表面的颜色基本相同。
根据本申请的实施例，所述不粘涂层构造为连续的弧面，所述不粘涂层中的底涂层和面涂层均构造为连续的弧面。
附图说明
本申请的上述和/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是本申请一个实施例的不粘氟涂层的结构示意图。
图2是本申请一个实施例的烹饪设备的部分结构示意图。
图3是本申请另一个实施例的烹饪设备的部分结构示意图。
具体实施方式
下面详细描述本申请的实施例。下面描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。实施例中未注明具体技术或条件的，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者，均为可以通过市购获得的常规产品。
在本申请的一个方面，本申请提供了一种不粘涂层。根据本申请的实施例，参照图1，该不粘涂层包括：底涂层10，所述底涂层10中至少一种材料的色调适于遮盖基体材料的色调；面涂层20，所述面涂层20设在所述底涂层背离基体材料的一个表面上，所述面涂层20中包括含氟树脂。该不粘涂层中，通过在底涂层中加入适于遮盖基体材料色调的材料，可以在不改变不粘涂层性能的基础上，有效解决不粘涂层以及设置有该不粘涂层的基体材料的高温黄变问 题，大幅提升了不粘涂层体系的耐黄变性能及外观效果，从而扩大了不粘涂层的使用范围。
根据本申请的实施例，所述底涂层中至少一种材料的色调适于遮盖所述基体材料色调的改变。由此，不粘涂层可以有效遮盖基体材料的黄变。一些具体实施例中，底涂层中至少一种材料的色调至少遮盖90％的所述基体材料的色调或所述底涂层中至少一种材料的色调至少遮盖90％的所述基体材料色调的改变。由此，不粘涂层遮盖基体材料黄变的效果较佳。
根据本申请的实施例，所述底涂层中具有第一颜料，所述第一颜料具有第一色调，所述第一色调适用于遮盖所述基体材料的色调。由此，即使在使用过程中基体材料发生黄变，也可以有效被底涂层遮盖，从产品外观看不到基体材料的黄变，从而可以有效改善基体材料的黄变问题。进一步的，能够减少基材色调对不粘涂层体系色调的干扰，从而提升不粘涂层体系的外观效果。
根据本申请的一些具体实施例，为了更好地改善不粘涂层和设置有该不粘涂层的基体材料的高温黄变问题，第一颜料可以包括白色颜料和偏白色颜料中的至少一种。具体的，所述白色颜料可以包括钛、钛化合物、氧化锌、氧化铝和云母中的至少一种，具体的，所述钛化合物可以包括氧化钛。具体的，氧化钛是一种白色无机颜料，具有无毒、最佳的不透明性、最佳白度和光亮度，不仅粘附力强，不易起化学变化，且永远是雪白的，不会在经过高温后发生黄变。由此，材料来源广泛，遮挡黄变的效果较好，且不会影响不粘涂层的不粘性能以及其与基体材料的结合力。
根据本申请的一些具体实施例，以白色调为基准，所述第一颜料的色调与所述白色调之间的色差值可以为0-30，具体可以为0-15，例如0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、20、25、30等。自身耐黄变的效 果和遮挡黄变的效果较好。
根据本申请的一些具体实施例，所述第一颜料的粒径可以为5-25微米，具体如5微米、8微米、10微米、12微米、5微米、8微米、0微米、22微米、25微米等。该粒径范围内，显色效果、耐黄变效果和遮盖黄变的效果较佳，且易于分散，能够很好的和不粘涂层中的其他成分配合作用，进而便于不粘涂层的制备，同时利于提高不粘涂层的质量。当第一颜料的粒径大于上述范围时，第一颜料在形成底涂层的涂料中的分散性较差，进而导致遮盖黄变的效果不佳。
根据本申请的实施例，基于所述底涂层的总质量，所述第一颜料的质量百分含量为5-40％，具体可以为12-27％，具体如5％、8％、10％、12％、13％、14％、15％、16％、17％、18％、19％、20％、21％、22％、23％、24％、25％、26％、27％、30％、32％、35％、8％、40％等。在该含量范围内，不粘涂层的颜色效果、遮盖力、防腐性能最佳，如果过多会影响不粘涂层的结合力以及防腐性能，如果过少不粘涂层的遮盖力会降低。
根据本申请的实施例，可以理解，除了第一颜料之外，底涂层中可以包括第一基体树脂，第一颜料可以分散在第一基体树脂中。根据本申请的一些具体实施例，所述第一基体树脂可以包括聚醚砜和聚四氟乙烯中的至少一种。由此，可以和设置有该不粘涂层的基体材料之间具有较好的结合力，同时具有较好的不粘性能。
根据本申请的实施例，根据使用需要，所述底涂层中还可以包括耐高温树脂、第一表面活性剂、第一pH调节剂和耐磨粒子中的至少一种。具体的，第一基体树脂和耐高温树脂具有较强的结合力，可以很好地和设有该不粘涂层的基体材料结合，同时具有较好的防止腐蚀作用，耐高温树脂可以包括聚苯硫醚(PPS)、聚酰胺—酰亚胺(PAI)和聚醚醚酮(PEEK)中的至少一种；第一表 面活性剂可以包括非离子型表面活性剂和阴离子型表面活性剂中的至少一种；第一pH调节剂可以包括氨水、三乙胺和二乙醇胺中的至少一种；而所述耐磨粒子包括Al 2O 3，SiO 2和SiC中的至少一种。上述组分可以使得不粘涂层具有更好的使用效果，具体的，第一表面活性剂可以使涂料更均匀利于保存并且降低涂料表面能利于施工，第一pH调节剂可以提高并稳定涂料的PH值，从而使涂料的黏度稳定利于施工，耐磨粒子可以大大提升不粘涂层的耐磨性能和使用寿命。
根据本申请的实施例，所述底涂层的厚度可以为6-30μm，具体如6μm、10μm、15μm、20μm、25μm、30μm等。在该厚度范围内，涂层的防腐耐磨性能最佳，如果过厚涂层容易开裂、喷涂时容易流挂，如果过薄涂层的防腐性能、耐磨性能遮盖力会下降。
根据本申请的实施例，面涂层可以包括第二颜料。在面涂层中加入第二颜料，能够使面涂层中的颜料覆盖底涂层中的第一颜料未覆盖到基体材料的部分，利用两次涂覆时颜料分布具有一定差异，从而提高对基体材料的色调的遮盖率。
根据本申请的实施例，面涂层中的所述第二颜料的色调可以与所述第一颜料的色调相同或不同。由此，可以通过第一颜料和第二颜料的结合而更好的改善不粘涂层和设置该不粘涂层的基体材料的黄变问题，且能够使不粘涂层体系呈现出较佳色调，提升不粘涂层体系的外观。且采用不同色调的颜料，一方面提高了不粘涂层体系的外观效果，且在面涂层中加入与第一颜料不同的第二颜料，能够利用不同色调的叠加显色效果，提高对基体材料色调的遮盖。根据本申请的实施例，所述第二颜料包括金属色颜料。由此，第二颜色为金属色，可以使得面涂层呈现金属光泽，具有较强的遮盖力，可以有效改善黄变的影响。
根据本申请的实施例，所述金属色颜料呈片状，且至少两个片状颜料在垂直于所述不粘涂层方向上的正投影相互重叠。由此，能够提高涂层的金属色泽，避免产生颜色不均匀的现象，且能够减少可能出现的未遮盖基体材料的色调，进一步的，能够减少杂色的出现，提高产品的外观。根据本申请的一些具体实施例，所述金属色颜料可以包括银粉和铝粉中的至少一种。一些具体示例中，金属色颜料可以包括银浆和铝银浆中的至少一种。其中，铝银浆的主要成分为雪片状铝粒子和石油溶剂，呈膏状，其特点是铝片表面光滑平整，粒度分布集中，形状规则，具有优异的光反射能力，金属光泽，和较强的遮盖能力。具体 的，铝粉和银粉粒径越小金属感越强，遮盖力也越强。一些具体实施例中，所述银粉和铝粉的粒径各自独立的为2-70μm，具体可以为3-20微米，具体如2μm、3μm、5μm、10μm、20μm、30μm、40μm、50μm、60μm、70μm等。该粒径范围内，不粘氟涂层具有极佳的改善黄变的效果。
根据本申请的实施例，基于所述面涂层的总质量，所述第二颜料的质量百分含量为1.5-12％，具体如1.5％、2％、3％、4％、5％、6％、7％、8％、9％、10％、11％、12％等。在该含量范围内，涂层的外观效果最佳且不影响涂层的其他性能，如果过多，悬浮太多，会影响涂层的不粘性及结合力，如果过少，遮盖力下降，色差值变大，会达不到所需的外观效果。
根据本申请的实施例，面涂层中的含氟树脂可以包括聚四氟乙烯(PTFE)。PTFE树脂主要起不粘作用，可以赋予该不粘涂层良好的不粘效果。一些具体实施例中，所述面涂层的厚度可以为8-20μm，具体如8μm、10μm、12μm、15μm、18μm、20μm等。在该厚度范围内，涂层的不粘性、防腐性能最好，如果过厚涂层会开裂，如果过薄不粘性会降低。
根据本申请的实施例，根据使用需要，所述面涂层中还可以包括第二表面活性剂和第二pH调节剂中的至少一种。具体的，所述第二表面活性剂可以包括非离子型表面活性剂和阴离子型表面活性剂中的至少一种；第二pH调节剂可以包括氨水、三乙胺和二乙醇胺中的至少一种。其中，第二表面活性剂可以降低涂料表面能利于施工、促进涂料稳定性能利于保存，第二pH调节剂可以稳定涂料的pH值。
根据本申请的一些具体实施例，所述第一基体树脂为聚醚砜和聚四氟乙烯的混合物，所述白色颜料为氧化钛；所述第二基体树脂为聚四氟乙烯，所述金属色颜料为银浆或铝银浆。由此，不同基体树脂和颜料之间的配合和协同作用，使得不粘涂层的遮盖能力更佳，改善黄变的效果更好。
根据本申请的实施例，面涂层可以覆盖底涂层的整个表面，也可以仅覆盖底涂层的部分表面。当面涂层覆盖底涂层的整个表面时，不粘涂层可以呈现所述第二颜料的色调或者所述第一颜料和所述第二颜料之间的色调(即不粘涂层呈现第一颜料的颜色和第二颜料的颜色的叠加效果)；而当面涂层仅覆盖底涂层的部分表面时，所述不粘涂层呈现的色调与所述基体材料的色调基本相同。由此，可以保持产品的外表面的色调一致，提高外观的一致性和美观度。
根据本申请的实施例，以所述基体材料的色调为基准，所述不粘涂层的色调与所述基体材料的色调之间的色差值ΔE可以为2-8，具体可以为2.5-6， 例如2、2.5、3、3.5、4、4.5、5、5.5、6、6.5、7、7.5、8等。由此，可以减少不粘涂层与具体材料的颜色差，提高整体外观的一致性。
在本申请的另一方面，本申请提供了一种不粘涂料组。根据本申请的实施例，该不粘涂料组包括：底涂料，所述底涂料中至少一种材料的色调适于遮盖基体材料的色调；面涂料，所述面涂料中包括含氟树脂。该涂料组中，通过在底涂料中添加适于遮盖基体材料色调的材料，既可以遮挡设置有该不粘涂料组形成的涂层的基体材料的黄变，也可以避免涂层本身的黄变。
根据本申请的一些实施例，所述底涂料包括：第一基体树脂分散液30～50重量份；耐高温树脂10～30重量份；第一溶剂20～50重量份；所述第一颜料1～12重量份；第一表面活性剂0～10重量份；去离子水0～50重量份；第一pH调节剂0～1重量份；耐磨粒子0～3重量份。具体的，该上述组分和含量范围，涂层的防腐性能、耐磨性能、遮盖力最佳。
根据本申请的实施例，所述面涂料可以包括：含氟树脂乳液45～70重量份；第二溶剂3～20重量份；所述第二颜料0.5～5重量份；第二表面活性剂0～10重量份；去离子水10～50重量份；第二pH调节剂0～1重量份。具体的，该上述组分和含量范围，涂层的防腐性能、不粘性能、颜色效果最佳。
根据本申请的实施例，所述不粘涂料组用于形成前面所述的不粘涂层，其中，所述底涂料用于形成底涂层，所述面涂料用于形成所述面涂层。具体的，该不粘涂料组中的各组分可以与前面不粘涂层中的相应组分一致，在此不再一一赘述。
根据本申请的实施例，上述第一溶剂和第二溶剂主要用于溶解树脂作用，具体的，第一溶剂和第二溶剂可以各自独立的包括N-甲基吡咯烷酮(NMP)、乙醇、异丙醇、丙二醇、丙三醇、甲苯、二甲苯和二乙二醇乙醚中的至少一种。由此，溶解效果较佳，且成本较低。
在本申请的再一方面，本申请提供了一种制备前面所述的不粘涂层的方法。根据本申请的实施例，该方法包括：将第一溶剂、第一表面活性剂、去离子水、第一pH调节剂搅拌混合，得到第一混合物；向所述第一混合物中加入第一基体树脂分散液和耐温树脂，并搅拌均匀，得到第二混合物；向所述第二混合物中加入第一颜料和耐磨粒子，得到底涂料；将第二溶剂、第二表面活性剂、去离子水、第二pH调节剂搅拌混合，得到第三混合物；向所述第三混合物中加入含氟树脂乳液搅并拌均匀，得到第四混合物；向所述第四混合物中加入第二颜料，得到面涂料；利用压缩空气喷涂方式涂敷所述底涂料并进行第一 烘烤固化，得到底涂层；利用压缩空气喷涂方式在所述底涂层的表面上涂敷所述面涂料并进行第二烘烤固化，得到面涂层。该方法操作简单、方便，对于设备和技术人员没有苛刻要求，易于实现工业化生产，且成本较低，经济性好。
一些具体实施例中，该方法可以包括以下步骤：向搅拌的容器内加入适当比例的第一溶剂、第一表面活性剂、去离子水、第一pH调节剂进行搅拌混合，再加入PES分散液、耐温树脂，搅拌均匀后，再加入氧化钛、耐磨粒子，配置成底涂料，然后采用压缩空气喷涂方式，涂敷于粗糙而洁净的金属基材表面，适度烘烤固化冷却，得到底涂层，底涂层的膜厚可以为6～30微米；向搅拌的容器内加入适当比例的第二溶剂、第二表面活性剂、去离子水、第二pH调节剂进行搅拌混合，再加入PTFE乳液搅拌均匀后，再加入铝银浆或银浆，配置成面涂料，然后可采用压缩空气喷涂方式，涂敷于底涂层表面，适度烘烤固化冷却，得到面涂层，面涂层的膜厚可以为8～20微米。
在本申请的又一方面，本申请提供了一种烹饪设备。根据本申请的实施例，参照图2和图3，该烹饪设备包括：金属基材100；不粘涂层200，所述不粘涂层200设置在所述金属基材100的表面上，所述不粘涂层200为前面所述的不粘涂层，或者是由前面所述的不粘涂料组形成的。具体的，不粘涂层200可以包括底涂层10和面涂层20。该烹饪设备具有较好的不粘性能的同时，经过高温不会发生黄变。
可以理解，该烹饪设备的具体种类没有特别限制，可以为任何烹饪设备，例如包括但不限于锅具(炒锅、汤锅、炖锅、奶锅、平底锅等)、电饭煲内胆、压力锅内胆等等，在此不再一一赘述。
根据本申请的一些实施例，所述烹饪设备的至少一部分初始状态的色调与加热状态的色调相同。根据本申请的另一些实施例，所述烹饪设备的至少一部分初始状态的色调与加热状态的色调的色差值ΔE小于4，优选的ΔE小于2，具体的，ΔE可以为3.5、3、2.5、2、1.5、1、0.5、0.2、0等等。由此，烹饪设备的外观一致性好。
根据本申请的实施例，所述金属基材可以包括不锈钢。具体的，由于不锈钢经过高温后易于发生黄变，将不锈钢基材和上述不粘涂层或者不粘涂料结合使用，可以很好地改善金属基材和涂层本身的黄变问题。
根据本申请的一些实施例，参照图2，所述金属基材100的表面可以为平面，所述不粘涂层200设置在所述平面上。由此，具有优异的不粘性能。另一些实施例中，参照图3，所述金属基材100的表面上具有多个间隔设置的凹陷 部310，多个所述凹陷部310之间为凸起的表面320，所述不粘涂层200设置在所述凹陷部310的内壁上。具体的，可以提高不粘涂层的附着力，且减少不粘涂层的耐刮擦性能，外力不易与凹陷处的不粘涂层接触，从而提高凹陷处不粘涂层的附着力，保持长久的不粘性能、更好的耐磨性和持久寿命。
根据本申请的实施例，参照图3，每个所述凹陷部310中，所述不粘涂层200远离所述金属基材100的表面201为中部向所述金属基材100凸起的曲面，且所述不粘涂层200远离所述金属基材100的表面低于所述凸起的表面320。由此，能够减少涂层被刮除的几率，提高涂层在凹陷部的附着力，且能够在涂层上方与凸起的表面之间形成空气层，提升对食物的不粘性能。进一步的，在加热时能够在涂层上方形成热空气层，促进食物的受热均匀。
根据本申请的实施例，参照图3，所述凹陷部310的内壁面为连续的弧面，每个所述凹陷部310中的所述不粘涂层200的底部的厚度H1大于所述不粘涂层200的侧壁的厚度H2。由此，凹陷部的内壁面为连续的弧面能够减少涂层在凹陷部下部上的堆积，促进涂层向凹陷部底部的流动，减少凹陷部涂层处热量的堆积，从而避免形成热裂纹而降低该处的耐腐蚀性能。涂层底部的厚度大于涂层侧壁的厚度，能够提升涂层底部的传热能力，从而提升涂层整体的导热性能。
根据本申请的实施例，参照图3，每个所述凹陷部310中，在所述凹陷部310的顶部至底部的方向上，所述不粘涂层200的厚度逐渐增大。由此，能够提升涂层底部的传热能力，从而提升涂层整体的导热性能。
根据本申请的实施例，参照图3，所述不粘涂层200构造为连续的弧面，所述不粘涂层中的底涂层10和面涂层20均构造为连续的弧面。由此，能够避免能量在涂层中堆积，从而减少热腐蚀的形成，提高涂层的耐腐蚀性能。
根据本申请的实施例，所述不粘涂层的颜色与所述凸起的表面的颜色基本相同。由此，可以保持烹饪设备外观的一致性和美观性。
下面详细描述本申请的实施例。
以下实施例中，不粘涂层的制备方法均为：
向搅拌的容器内加入适当比例的第一溶剂、第一表面活性剂、去离子水、第一pH调节剂进行搅拌混合，再加入第一基体树脂分散液、耐温树脂，搅拌均匀后，再加入第一颜料和耐磨粒子，配置成底涂料，采用压缩空气喷 涂方式，涂敷于粗糙而洁净的不锈钢金属基材表面，适度烘烤固化冷却，得到底涂层。
向搅拌的容器内加入适当比例的第二溶剂、第二表面活性剂、去离子水、第二pH调节剂进行搅拌混合，再加入第二基体树脂乳液搅拌均匀后，再加入第二颜料(不含第二颜料时省略该步骤)，配置成面涂料，采用压缩空气喷涂方式，涂敷于底涂层表面，适度烘烤固化冷却，得到面涂层。
实施例1
底涂层：PES 30重量份；PPS 30重量份；NMP 35重量份；氧化钛 15重量份，氧化钛的粒径为10微米；去离子水25重量份；氨水0.5重量份；Al 2O 3 3重量份；形成的底涂层的厚度为6微米，其中，底涂层中氧化钛的质量百分含量为10％。
面涂层：PTFE 50重量份；NMP 5重量份；非离子表面活性剂10重量份；去离子水25重量份；形成的面涂层厚度为8微米。
对比例1
PTFE涂层，不锈钢作为基体，其中PTFE涂层的厚度为14微米。
实施例2
底涂层同实施例1。
面涂层：PTFE 60重量份；NMP 7重量份；铝粉 1.2重量份，铝粉粒径为3微米；非离子表面活性剂5重量份；去离子水40重量份；形成的面涂层厚度为8微米，其中，面涂层中铝粉的质量百分含量为3％。
实施例3
同实施例2，不同的在于底涂层中氧化钛的用量为40重量份，底涂层中氧化钛的质量百分含量为27％。
实施例4
同实施例2，不同的在于底涂层中氧化钛的用量为6重量份，底涂层中氧化钛的质量百分含量为4％。
实施例5
同实施例2，不同的在于底涂层中氧化钛的用量为60重量份，底涂层中氧化钛的质量百分含量为45％。
实施例6
同实施例2，不同的在于底涂层中氧化钛的粒径为40微米。
实施例7
同实施例2，不同的在于底涂层的厚度为30微米。
实施例8
同实施例2，不同的在于底涂层的厚度为40微米。
实施例9
同实施例2，不同的在于底涂层的厚度为4微米。
实施例10
同实施例2，不同的在于面涂层中铝粉的用量为1重量份，面涂层中铝粉的质量百分含量为2％。
实施例11
同实施例2，不同的在于面涂层中铝粉的用量为2重量份，面涂层中铝粉的质量百分含量为5％。
实施例12
同实施例2，不同的在于面涂层中铝粉的用量为0.5重量份，面涂层中铝粉的质量百分含量为1％。
实施例13
同实施例2，不同的在于面涂层中铝粉的用量为8重量份，面涂层中铝粉的质量百分含量为20％。
实施例14
同实施例2，不同的在于面涂层的厚度为20微米。
实施例15
同实施例2，不同的在于面涂层的厚度为5微米。
实施例16
同实施例2，不同的在于面涂层的厚度为30微米。
实施例17
同实施例2，不同的在于铝粉的粒径为20微米。
实施例18
同实施例1，不同的在于底涂层中的氧化钛替换为15重量份的氧化锌。
实施例19
同实施例1，不同的在于底涂层中的氧化钛替换为15重量份的氧化铝。
实施例20
同实施例2，不同的在于底涂层中的氧化钛替换为15重量份的氧化锌。
实施例21
同实施例2，不同的在于底涂层中的氧化钛替换为15重量份的氧化铝。
实施例22
同实施例2，不同的在于面涂层中的铝粉替换为1.2重量份的银粉。
性能检测：
1、附着力的测试方法和评级标准如下(划百格测试)：
测试方法：用百格刀在测试样本表面划10×10个(100个)1mm×1mm小网格，每一条划线应深及不粘涂层的底涂层；用毛刷将测试区域的碎片刷干净；用3M600号胶纸或等同效力的胶纸牢牢粘住被测试小网格，并用橡皮擦用力擦拭胶带，以加大胶带与被测区域的接触面积及力度；静止3-5分钟后用手抓住胶带一端，在垂直方向(90°/60°)迅速扯下胶纸，同一位置进行2次相同试验。附着力判定标准：
0级：切割边缘完全平滑无一格脱落。
1级：在切口交叉处有少许涂层脱落，但交叉切割面积受影响不能明显大于5％。
2级：在切口交叉处或沿切口边缘有涂层脱落，受影响的交叉切割面积明显大于5％，但不能明显大于15％。
3级：涂层沿切割边缘部分或全部以大碎片脱落和或在格子不同部位上部分或全部剥落受影响的交叉切割面积明显大于15％，但不能明显大于35％。
4级：涂层沿切割边缘大碎片剥落和或一些方格部分或全部出现脱落，受影响的交叉切割面积明显大于35％，但不能明显大于65％。
5级：剥落的程度超过4级。
2、不粘性测试方法和标准如下：
测试方法：1、在烹饪器具内倒入适量的植物油，用软布揩不粘表面至涂覆均匀；
2、用高于60℃的温水加中性洗涤剂清洗，然后用清水洗净、擦干；
3、将烹饪器具置于额定电压为220V、输出功率为1kW的电炉上加热，用精确度不低于2.5级的表面温度计测量，不粘涂层表面温度达到150℃～170℃时，将一只重量在50g～60g的新鲜鸡蛋破壳后放入烹饪器具内，待蛋白 基本凝固(整个烹饪过程中，不粘涂层表面温度不得超过210℃)；
不粘性判定标准：用锋口厚度为0.2mm～0.5mm的塑料铲可使鸡蛋无损伤取出并不残留残渣。连续煎蛋10个及以上无损伤取出并不残留残渣，不粘性为1级；连续煎蛋5个无损伤取出并不残留残渣，不粘性为2级；连续煎蛋1个无损伤取出并不残留残渣，不粘性为3级；鸡蛋不能完整取出但无残留，不粘性为4级；鸡蛋不能完整取出且有残留，不粘性为5级。
3、色差检测：
具体测试方法为：色差测试仪测量色差，以所使用不锈钢金属基材(未加热)为基准，色差ΔE＝0(ΔE值越小代表色差越小)。350摄氏度加热后不锈钢金属基材与未加热前的不锈钢金属基材的色差值为ΔE＝32.76。
各实施例和对比例的性能测试结果见下表1。
表1
Figure PCTCN2020128978-appb-000003
Figure PCTCN2020128978-appb-000004
具体的，未加热样品与基准基体之间的色差值主要体现不粘涂层自身颜 色，而加热前后样品与基准基体之间的色差值的变化越小(包括变大和变小)，说明不粘涂层耐黄变的性能和遮盖力越好，基于此，从上述数据可以看出：
1、底涂层和面涂层中均含有颜料时，遮盖效果相较于仅底涂层中含有颜料的遮盖效果更佳。
2、随着底涂层中颜料的含量增多，遮盖力会相对变好，而结合力会降低，随着底涂层中颜料的含量减少，遮盖力会降低。
3、随着底涂层厚度增加，更容易开裂，随着底涂层厚度减小，遮盖力会下降。
4、随着面涂层中颜料含量增加，遮盖力先逐渐提高然后逐渐下降，说明含量更多时悬浮增多，且不粘性下降。
5、随着面涂层中颜料的粒径增大，遮盖力下降。
7、随着面涂层厚度增加或减小，不粘性均会下降，厚度增加，开裂概率升高。
综上所述，当不沾涂层在底涂层中加入含量、粒径适当且适于遮盖基体材料色调的材料，并形成厚度适中的底涂层时，可以在不改变不粘涂层性能的基础上有效地解决不粘涂层以及基体材料的高温黄变问题，经高温加热(350摄氏度)后样品的色差较小，可满足烹饪设备的需求。
在本申请的描述中，需要理解的是，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一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
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申请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申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (32)

  1. 一种不粘涂层，包括：
    底涂层，所述底涂层中至少一种材料的色调适于遮盖基体材料的色调；
    面涂层，所述面涂层设在所述底涂层背离基体材料的一个表面上，所述面涂层中包括含氟树脂。
  2. 根据权利要求1所述的不粘涂层，所述底涂层中至少一种材料的色调适于遮盖所述基体材料色调的改变。
  3. 根据权利要求1或2所述的不粘涂层，所述底涂层中至少一种材料的色调至少遮盖90％的所述基体材料的色调或所述底涂层中至少一种材料的色调至少遮盖90％的所述基体材料色调的改变。
  4. 根据权利要求1-3任一项所述的不粘涂层，所述底涂层中具有第一颜料，所述第一颜料具有第一色调，所述第一色调适用于遮盖所述基体材料的色调。
  5. 根据权利要求1-4任一项所述的不粘涂层，所述面涂层中包括第二颜料，
    所述第二颜料的色调与所述第一颜料的色调相同或不同。
  6. 根据权利要求5所述的不粘涂层，以未加热的所述基体材料的色调为基准，所述不粘涂层的色调与所述基体材料的色调之间的色差值ΔE＝2-8。
  7. 根据权利要求6所述的不粘涂层，所述不粘涂层的色调与所述基体材料的色调之间的色差值ΔE为2.5-6。
  8. 根据权利要求5所述的不粘涂层，所述不粘涂层呈现所述第二颜料的 色调或者所述第一颜料和所述第二颜料之间的色调。
  9. 根据权利要求5所述的不粘涂层，所述第一颜料包括白色颜料和偏白色颜料中的至少一种，所述第二颜料包括金属色颜料。
  10. 根据权利要求9所述的不粘涂层，以白色调为基准，所述第一颜料的色调与所述白色调之间的色差值为0-30。
  11. 根据权利要求10所述的不粘涂层，以白色调为基准，所述第一颜料的色调与所述白色调之间的色差值为0-15。
  12. 根据权利要求9所述的不粘涂层，所述金属色颜料呈片状，且至少两个片状颜料在垂直于所述不粘涂层方向上的正投影相互重叠。
  13. 根据权利要求5所述的不粘涂层，所述不粘涂层呈现的色调与所述基体材料的色调基本相同。
  14. 根据权利要求5所述的不粘涂层，所述底涂层包括第一基体树脂和分散在所述第一基体树脂中的所述第一颜料，且所述底涂层满足以下条件的至少之一：
    所述第一颜料包括白色颜料，所述白色颜料包括钛、钛化合物、氧化锌、氧化铝和云母中的至少一种；
    所述第一颜料的粒径为5-25微米；
    所述第一基体树脂包括聚醚砜和聚四氟乙烯中的至少一种；
    所述底涂层的厚度为6-30μm；
    基于所述底涂层的总质量，所述第一颜料的质量百分含量为5-40％，优选为10-27％。
  15. 根据权利要求5所述的不粘涂层，所述面涂层包括所述含氟树脂和分散在所述含氟树脂中的所述第二颜料，且所述面涂层满足以下条件的至少之 一：
    所述第二颜料包括金属色颜料，所述金属色颜料包括银粉和铝粉中的至少一种；
    所述含氟树脂包括聚四氟乙烯；
    所述面涂层的厚度为8-20μm；
    基于所述面涂层的总质量，所述第二颜料的质量百分含量为1.5-12％。
  16. 根据权利要求14或15所述的不粘涂层，满足以下条件的至少之一：
    所述钛化合物包括氧化钛；
    所述银粉和铝粉的粒径各自独立的为2-70μm，优选为3-20微米。
  17. 根据权利要求14或15所述的不粘涂层，满足以下条件的至少之一：
    所述底涂层中还包括耐高温树脂、第一表面活性剂、第一pH调节剂和耐磨粒子中的至少一种；
    所述面涂层中还包括第二表面活性剂和第二pH调节剂中的至少一种。
  18. 根据权利要求17所述的不粘涂层，满足以下条件的至少之一：
    所述耐高温树脂包括聚苯硫醚、聚酰胺—酰亚胺和聚醚醚酮中的至少一种；
    所述第一表面活性剂和所述第二表面活性剂各自独立的包括非离子型表面活性剂和阴离子型表面活性剂中的至少一种；
    所述第一pH调节剂和所述第二pH调节剂各自独立的包括氨水、三乙胺和二乙醇胺中的至少一种；
    所述耐磨粒子包括Al 2O 3，SiO 2和SiC中的至少一种。
  19. 根据权利要求14或15所述的不粘涂层，所述第一基体树脂为聚醚砜和聚四氟乙烯的混合物，所述白色颜料为氧化钛；
    所述含氟树脂为聚四氟乙烯，所述金属色颜料为银粉或铝粉。
  20. 一种不粘涂料组，包括：
    底涂料，所述底涂料中至少一种材料的色调适于遮盖基体材料的色调；
    面涂料，所述面涂料中包括含氟树脂。
  21. 根据权利要求20所述的不粘涂料组，所述底涂料包括：
    Figure PCTCN2020128978-appb-100001
    所述面涂料包括：
    Figure PCTCN2020128978-appb-100002
  22. 根据权利要求20或21所述的不粘涂料组，所述不粘涂料组用于形成权利要求1-19中任一项所述的不粘涂层，其中，所述底涂料用于形成底涂层，所述面涂料用于形成面涂层。
  23. 一种烹饪设备，其特征在于，包括：
    金属基材；
    不粘涂层，所述不粘涂层设置在所述金属基材的表面上，所述不粘涂层为权利要求1-19中任一项所述的不粘涂层，或者是由权利要求20-22中任一项所述的不粘涂料组形成的。
  24. 根据权利要求23所述的烹饪设备，所述烹饪设备的至少一部分初始状态的色调与加热状态的色调相同或所述烹饪设备的至少一部分初始状态的色调与加热状态的色调的色差值ΔE小于4。
  25. 根据权利要求23所述的烹饪设备，所述烹饪设备的至少一部分初始状态的色调与加热状态的色调相同或所述烹饪设备的至少一部分初始状态的色调与加热状态的色调的色差值ΔE小于2。
  26. 根据权利要求23-25任一项所述的烹饪设备，所述金属基材包括不锈钢。
  27. 根据权利要求23-26任一项所述的烹饪设备，所述金属基材的表面为平面，所述不粘涂层设置在所述平面上；或者
    所述金属基材的表面上具有多个间隔设置的凹陷部，多个所述凹陷部之间为凸起的表面，所述不粘涂层设置在所述凹陷部的内壁上。
  28. 根据权利要求27所述的烹饪设备，每个所述凹陷部中，所述不粘涂层远离所述金属基材的表面为中部向所述金属基材凸起的曲面，且所述不粘涂层远离所述金属基材的表面低于所述凸起的表面。
  29. 根据权利要求27所述的烹饪设备，所述凹陷部的内壁面为连续的弧面，每个所述凹陷部中的所述不粘涂层的底部的厚度大于所述不粘涂层的侧壁的厚度。
  30. 根据权利要求27所述的烹饪设备，每个所述凹陷部中，在所述凹陷部的顶部至底部的方向上，所述不粘涂层的厚度逐渐增大。
  31. 根据权利要求27所述的烹饪设备，所述不粘涂层颜色与所述凸起的表面的颜色基本相同。
  32. 根据权利要求23所述的烹饪设备，所述不粘涂层构造为连续的弧面，所述不粘涂层中的底涂层和面涂层均构造为连续的弧面。
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EP4197652A4 (en) 2024-01-24
CN114075405A (zh) 2022-02-22
CN114075405B (zh) 2023-01-24

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