WO2020235844A1 - Procédé de fabrication d'un ustensile de cuisson comprenant une couche de revêtement composite thermochromatique et ustensile de cuisson ainsi fabriqué - Google Patents

Procédé de fabrication d'un ustensile de cuisson comprenant une couche de revêtement composite thermochromatique et ustensile de cuisson ainsi fabriqué Download PDF

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Publication number
WO2020235844A1
WO2020235844A1 PCT/KR2020/006085 KR2020006085W WO2020235844A1 WO 2020235844 A1 WO2020235844 A1 WO 2020235844A1 KR 2020006085 W KR2020006085 W KR 2020006085W WO 2020235844 A1 WO2020235844 A1 WO 2020235844A1
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weight
layer
parts
thermochromic
toning
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PCT/KR2020/006085
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English (en)
Korean (ko)
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손재봉
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주식회사 셰프라인
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Priority to CN202080037404.1A priority Critical patent/CN113873924A/zh
Publication of WO2020235844A1 publication Critical patent/WO2020235844A1/fr

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • 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
    • 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
    • B05D5/061—Special surface effect
    • 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

Definitions

  • the present invention relates to a cooking utensil manufacturing method including a thermochromic composite coating layer and a cooking utensil manufactured thereby.
  • the heating cookware such as a frying pan, a grilling plate, and a pot, is made of a metal material, and the heating cookware has a coating layer having heat resistance and corrosion resistance on a surface where the food material to be cooked directly contacts.
  • thermochromic coating layer when cooking using such a cooking utensil for heating, there is a problem in that it is difficult for a user to accurately determine how much the cooking utensil is heated to the fire.
  • cooking utensils capable of grasping the heating state by thermal discoloration of the coating layer have been produced by applying and curing a coating agent including a Zion pigment on the surface of the cooking utensil to form a thermochromic coating layer.
  • Republic of Korea Patent Publication No. 10-1686414 (announced on December 14, 2016, title of the invention: a ceramic coating layer capable of displaying a heating state and a method of manufacturing a ceramic paint, a coating method thereof, and a heating device using the coating method. ).
  • One object of the present invention is to provide a cooking utensil manufacturing method including a thermochromic composite coating layer capable of easily identifying the heating state of the cooking utensil.
  • Another object of the present invention is to provide a cooking utensil manufacturing method including a thermochromic composite coating layer having excellent wear resistance, durability, and interlayer adhesion of the composite coating layer.
  • Another object of the present invention is to provide a cooking utensil manufacturing method including a thermochromic composite coating layer having excellent thermal conductivity and antifouling properties and excellent non-stick properties in which food materials do not stick to the surface of the composite coating layer during cooking. Is to do.
  • Another object of the present invention is to provide a cookware manufactured by the cookware manufacturing method.
  • the cooking appliance manufacturing method including the thermochromic composite coating layer comprises: forming a primer layer containing a fluorine-based resin on a surface of a metal substrate; Forming a toning layer by applying a toning coating comprising a matrix resin and a toning pigment to at least a portion of the surface of the primer layer; Forming a thermochromic layer by applying a thermochromic coating agent including a thermochromic compound and a color change pigment on at least a portion of the surface of the primer layer; And applying a top coating agent to the surface of the primer layer on which the thermochromic layer is formed and heat treatment to form a top coating layer, wherein the top coating agent includes 100 parts by weight of a fluorine-based base resin; 10 to 50 parts by weight of an alkoxy silane compound; 5 to 50 parts by weight of the first pigment; 0.5 to 15 parts by weight of molybdenum
  • the heat treatment may be performed at 380 to 450°C.
  • the top coating agent further includes 0.5 to 5 parts by weight of germanium oxide based on 100 parts by weight of the fluorine-based base resin, and the germanium oxide and phosphoric acid ester compound may be included in a weight ratio of 1:1 to 1:5.
  • the toning layer and the thermochromic layer may be formed using pad printing, respectively.
  • the primer layer includes 100 parts by weight of a fluorine-based base resin; 1 to 40 parts by weight of a second pigment; 1 to 15 parts by weight of a phosphoric acid ester compound; And germanium oxide 0.5 to 5 parts by weight; It may be formed from a primer comprising a.
  • the fluorine-based resin is polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer (PFA), and polyvinylidene fluoride (PVDF). ) May include one or more of.
  • PTFE polytetrafluoroethylene
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • PFA tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer
  • PVDF polyvinylidene fluoride
  • the toning coating agent comprises 100 parts by weight of a matrix resin and 0.5 to 50 parts by weight of a toning pigment
  • the thermochromic coating agent includes 100 parts by weight of a thermochromic compound and 0.5 to 30 parts by weight of a color change pigment
  • the thermochromic The compound may include one or more of a mercury iodide complex salt and a vanadium oxide.
  • the first pigment may include at least one of carbon black, perylene red, manganese ferrite black, copper chromite black, bismuth vanadate, iron hydroxide yellow, chromium oxide green, and cobalt aluminate blue.
  • the cookware is a metal substrate; A primer layer comprising a fluorine-based resin formed on at least one surface of the metal substrate; A toning layer formed on at least a portion of the surface of the primer layer; A thermochromic layer formed on at least a portion of the surface of the primer layer; And a top coating layer formed on the surface of the primer layer and the thermochromic layer, wherein the top coating layer comprises: 100 parts by weight of a fluorine-based base resin; 10 to 50 parts by weight of an alkoxy silane compound; 5 to 50 parts by weight of the first pigment; 0.5 to 15 parts by weight of molybdenum disulfide; And 1 to 15 parts by weight of a phosphate ester compound; and the toning layer is formed from a toning coating comprising a matrix resin and a toning pigment, and the thermochromic layer is a thermochromic compound and a color change pigment It is formed from a
  • thermochromic layer does not appear on the surface at room temperature, and when heated above a predetermined temperature, the thermochromic layer appears on the surface of the cookware, making it possible to identify. It is possible to easily identify the heating state of cooking utensils, and the abrasion resistance, durability of the thermochromic composite coating layer and the adhesion between the layers of the composite coating layer are excellent, thermal conductivity is excellent, and antifouling properties are excellent, making it easy to clean and manage. , When cooking, food ingredients do not stick to the surface of the composite coating layer, and non-stick properties may be excellent.
  • FIG. 1 is a flow chart showing a cooking utensil manufacturing method according to an embodiment of the present invention.
  • Figure 2 schematically shows a cooking utensil manufacturing method of the present invention.
  • Example 3 is a photograph of a cookware manufactured according to Example 1.
  • Example 4 is a photograph of the cookware manufactured according to Example 1 after heating.
  • thermochromic composite coating layer including a thermochromic composite coating layer
  • One aspect of the present invention relates to a method for manufacturing a cookware including a thermochromic composite coating layer.
  • 1 is a flow chart showing a cooking utensil manufacturing method according to an embodiment of the present invention
  • Figure 2 schematically shows the cooking utensil manufacturing method of the present invention. 1 and 2, the cooking utensil manufacturing method includes (S10) forming a primer layer; (S20) forming a toning layer; (S30) forming a thermochromic layer; And (S40) forming a top coating layer and heat treatment step.
  • the cooking appliance manufacturing method including the thermochromic composite coating layer includes the steps of (S10) forming a primer layer containing a fluorine-based resin on the surface of a metal substrate; (S20) forming a toning layer by applying a toning coating comprising a matrix resin and a toning pigment to at least a portion of the surface of the primer layer; (S30) forming a thermochromic layer by applying a thermochromic coating agent including a thermochromic compound and a discoloration pigment to at least a portion of the surface of the primer layer; And (S40) forming a top coating layer by applying a top coating agent to the surface of the primer layer on which the thermochromic layer is formed and heat treatment.
  • thermochromic composite coating layer is to be defined as including a primer layer, a toning layer, a thermochromic layer, and a top coating layer.
  • thermochromic composite coating layer according to the present invention
  • the step is a step of forming a primer layer by applying and drying a primer agent containing a fluorine-based resin on at least a portion of the metal substrate.
  • the primer layer 20 may be formed on a surface where the metal substrate 10 and the food are in contact.
  • the metal substrate 10 may include one or more of aluminum, aluminum alloy, copper, magnesium, aluminum plated steel, iron, and stainless steel.
  • the surface of the metal substrate to which the primer agent is to be applied may be subjected to sand blasting. During the sand blasting, the surface area of the metal substrate is increased, so that adhesion of the primer layer may be excellent.
  • the primer layer includes 100 parts by weight of a fluorine-based base resin; 5 to 50 parts by weight of a second pigment; 1 to 15 parts by weight of a phosphoric acid ester compound; And germanium oxide 0.5 to 5 parts by weight; may be formed from a primer comprising a.
  • the fluorine-based resin is polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer (PFA), and polyvinylidene fluoride (PVDF).
  • PTFE polytetrafluoroethylene
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • PFA tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer
  • PVDF polyvinylidene fluoride
  • the primer layer may have excellent chemical resistance, abrasion resistance, durability and heat resistance.
  • it may include one or more of polytetrafluoroethylene (PTFE) and tetrafluoroethylene-hexafluoropropylene copolymer (FEP).
  • the second pigment may include at least one of carbon black, perylene red, manganese ferrite black, copper chromite black, bismuth vanadate, iron hydroxide yellow, chromium oxide green, and cobalt aluminate blue.
  • manganese ferrite black and perylene red may be included.
  • the second pigment may be included in 1 to 40 parts by weight based on 100 parts by weight of the fluorine-based resin. When included in the above range, it is possible to prevent degradation of durability and mechanical properties of the primer layer without deteriorating the mixability and dispersibility of the primer agent. For example, 5 to 20 parts by weight may be included.
  • the average particle diameter of the second pigment may be 5 ⁇ 30 ⁇ m. In the above range, dispersibility and mixing properties may be excellent.
  • the phosphoric acid ester compound may be included for the purpose of improving durability of the primer layer of the present invention and adhesion to the substrate.
  • the phosphoric acid ester compound may be a phosphoric acid ester compound including at least one of a hydroxy group and a carboxyl group.
  • the phosphoric acid ester-based compound is included in 1 to 15 parts by weight based on 100 parts by weight of the fluorine-based resin.
  • the durability and adhesion of the primer layer are excellent, and the viscosity of the primer agent can be prevented from being excessively increased.
  • 1 to 8 parts by weight may be included.
  • the germanium oxide may be included for the purpose of improving interlayer adhesion between the metal substrate, the primer layer and the top coating layer of the present invention.
  • the germanium oxide is included in 0.5 to 5 parts by weight based on 100 parts by weight of the fluorine-based resin.
  • the mixing and dispersibility of the primer agent of the present invention may be excellent, and interlayer adhesion of the primer layer may be excellent.
  • 1 to 3 parts by weight may be included.
  • the germanium oxide and phosphoric acid ester compound may be included in a weight ratio of 1:1 to 1:5.
  • the blendability and workability of the primer agent are excellent, and interlayer adhesion and durability of the primer layer can be achieved.
  • germanium oxide and phosphoric acid ester compounds may be included in a weight ratio of 1:2 to 1:4.
  • the primer agent may further include a solvent.
  • the solvent is water, alcohol having 1 to 10 carbon atoms, toluene, xylene, diisobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, 1-methoxy-2-propanol, ethanol, Butyl cellosolve, cyclohexane, n-butyl acetate, N-methylpyrrolidone, dimethylformamide, ethyl acetate, acetone, methyl acetate, isobutyl acetate, isopropyl acetate, and dimethyl carbonate.
  • the alcohol having 1 to 10 carbon atoms may include one or more of methanol, ethanol, propanol, isopropanol, n-butanol, and isobutanol.
  • the solvent may be included in an amount of 10 to 500 parts by weight based on 100 parts by weight of the fluorine-based base resin. When included in the above range, it is easy to adjust the viscosity of the components of the primer agent, and dispersibility and workability may be excellent.
  • the primer agent may further include additives such as a surfactant, a leveling agent, and an antifoaming agent.
  • the additive may be included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the fluorine-based base resin.
  • the primer agent can be prepared by a conventional method.
  • the primer may be applied and dried at 80 to 160°C to form a primer layer.
  • the primer may be applied by a conventional method. For example, it can be applied using an air spray gun.
  • the primer agent may be applied one or more times by changing the color of the second pigment, respectively.
  • the primer may be applied by a conventional method. For example, it can be applied using an air spray
  • the thickness of the primer layer may be 5 ⁇ 30 ⁇ m.
  • the durability of the primer layer may be excellent under the above thickness condition.
  • the step is a step of forming a toning layer including a matrix resin and a toning pigment on at least a part of the surface of the primer layer.
  • a toning layer 30 may be formed by pad printing a toning coating agent on at least a part of the surface of the primer layer 20 as shown in FIG. 2(b).
  • the toning coating agent may include a matrix resin and a toning pigment. When included in the above range, workability and durability of the toning layer may be excellent.
  • the matrix resin may include one or more of polyether ether ketone, polyurethane, polyethylene sulfide, polyphenylene sulfide, ethyl cellulose, polyvinyl alcohol, and polyvinylpyrrolidone, but is not limited thereto.
  • the toning pigment includes titanium oxide.
  • the titanium oxide (TiO 2 ) is used to represent a white color, and the color (pattern) of the thermochromic layer that appears when heating the cooking utensils to be described later can be more clearly identified.
  • the average particle diameter of the toning pigment may be 5 ⁇ 30 ⁇ m. In the above range, the dispersibility and heat discoloration effect may be excellent.
  • the toning coating agent may include 100 parts by weight of the matrix resin and 0.5 to 50 parts by weight of the toning pigment. When included in the above range, the dispersibility and mixing properties of the toning coating agent components are excellent, and the adhesion of the coating layer may be excellent.
  • the toning coating agent may further include a solvent.
  • the solvent is water, alcohol having 1 to 10 carbon atoms, toluene, xylene, diisobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, 1-methoxy-2-propanol, ethanol, Butyl cellosolve, cyclohexane, N-methylpyrrolidone, dimethylformamide, n-butyl acetate, ethyl acetate, acetone, methyl acetate, isobutyl acetate, isopropyl acetate, and dimethyl carbonate.
  • the alcohol having 1 to 10 carbon atoms may include one or more of methanol, ethanol, propanol, isopropanol, n-butanol, and isobutanol.
  • the solvent may be included in an amount of 10 to 300 parts by weight based on 100 parts by weight of the matrix resin. When included in the above range, it is easy to adjust the viscosity of the components of the toning coating agent, and it may be excellent in mixability, dispersibility and workability.
  • the toning coating may be dried after pad printing or application.
  • the drying may be carried out under the conditions of 80 ⁇ 150 °C. Durability of the toning layer may be excellent under the above conditions.
  • the thickness of the toning layer may be 1 ⁇ 30 ⁇ m. Durability of the toning layer may be excellent under the above thickness condition.
  • thermochromic layer 40 by pad printing a thermochromic coating agent containing a thermochromic compound and a color change pigment on at least a part of the surface of the primer layer 20 as shown in FIG. 2(c). to be.
  • the thermochromic coating agent may include 100 parts by weight of a thermochromic compound and 0.5 to 30 parts by weight of a color change pigment. When included in the above range, workability and heat discoloration efficiency and reliability may be excellent.
  • thermochromic layer does not occur at room temperature, so that the thermochromic layer (pattern) is not visible, but when heated above a predetermined temperature, discoloration (pattern) of the thermochromic layer appears. It was found that it can be easily identified.
  • a red pigment such as perylene red is applied to the first or second pigment of the primer layer or the top coating layer, so that the thermochromic layer and the color are combined to be formed so that it is not visible to the naked eye at room temperature. May be.
  • the color change pigment includes iron oxide red.
  • a thermochromic layer is formed using the discoloration pigment under the above conditions, it is possible to have excellent discernability and excellent aesthetics to the user. Particularly, at room temperature, the color (or pattern) of the thermochromic layer does not appear on the surface of the cookware, and when heated to a predetermined temperature, the color (or pattern) is discolored and thus the color (or pattern) appears, thereby providing excellent identification.
  • the average particle diameter of the color change pigment may be 5 ⁇ 30 ⁇ m. In the above range, the dispersibility and heat discoloration effect may be excellent.
  • the color change pigment may be included in 0.5 to 30 parts by weight based on 100 parts by weight of the thermochromic compound.
  • the dispersibility and workability of the components of the thermochromic coating agent may be excellent.
  • workability and heat discoloration efficiency and reliability may be excellent.
  • thermochromic compound may include at least one of a mercury iodide complex salt and a vanadium oxide.
  • the mercury iodide complex salt may include at least one of disilver tetraiodomercurate (Ag 2 HgI 4 ) and dicoper tetraiodomercurate (Cu 2 HgI 4 ). .
  • the thermochromic coating agent may further include a solvent.
  • the solvent is water, alcohol having 1 to 10 carbon atoms, toluene, xylene, diisobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, 1-methoxy-2-propanol, ethanol, Butyl cellosolve, cyclohexane, n-butyl acetate, N-methylpyrrolidone, dimethylformamide, ethyl acetate, acetone, methyl acetate, isobutyl acetate, isopropyl acetate, and dimethyl carbonate.
  • the alcohol having 1 to 10 carbon atoms may include one or more of methanol, ethanol, propanol, isopropanol, n-butanol, and isobutanol.
  • the solvent may be included in an amount of 10 to 300 parts by weight based on 100 parts by weight of the thermochromic compound. When included in the above range, the dispersibility and workability of the components of the thermochromic coating agent may be excellent.
  • thermochromic layer may be formed using pad printing.
  • thermochromic coating may be dried after pad printing or application. In one embodiment, the drying may be performed under conditions of 80 to 150°C. Durability of the thermochromic layer may be excellent under the above conditions.
  • the thickness of the thermochromic layer may be 1 to 30 ⁇ m. Durability of the thermochromic layer may be excellent under the above thickness condition.
  • the step is a step of forming a top coating layer 50 by applying a top coating agent containing a fluorine-based resin on the surface of the primer layer on which the thermochromic layer 40 is formed as shown in FIG. 2(d) and heat treatment.
  • the top coating layer may be formed on the surface of the toning layer 30, the surface of the thermochromic layer 40, and the surface of the primer layer 20 as shown in FIG. 2(d). If the heat treatment is not applied, defects may occur, such as a decrease in adhesion of the coating layer and a decrease in surface smoothness of the coating layer.
  • the top coating layer may prevent damage to the toning layer and the thermochromic layer, have excellent non-stick properties of cooked food materials, and have excellent wear resistance, thermal conductivity, chemical resistance, smoothness and durability.
  • thermochromic layer does not appear on the surface at room temperature, and when heated to a predetermined temperature or higher, the thermochromic layer appears and thus can be identified.
  • the top coating agent is 100 parts by weight of a fluorine-based base resin; 10 to 50 parts by weight of an alkoxy silane compound; 5 to 50 parts by weight of the first pigment; 0.5 to 15 parts by weight of molybdenum disulfide; And 1 to 15 parts by weight of a phosphoric acid ester compound.
  • the fluorine-based resin is polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer (PFA), and polyvinylidene fluoride (PVDF). ) May include one or more of.
  • PTFE polytetrafluoroethylene
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • PFA tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer
  • PVDF polyvinylidene fluoride
  • the alkoxy silane compound may be included to improve adhesion and durability between the top coating layer, the toning layer, the thermochromic layer, and the primer layer.
  • the alkoxy silane is glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, methacryloylpropyltrimethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, methacrylo It may include one or more of ylpropyltriethoxysilane and glycidoxypropyltriethoxysilane.
  • the alkoxy silane compound may be included in 10 to 50 parts by weight based on 100 parts by weight of the fluorine-based base resin.
  • the alkoxysilane compound is included in an amount of less than 10 parts by weight, durability and adhesion of the top coating layer are reduced, and when it contains more than 50 parts by weight, the blendability and workability of the top coating agent, and the smoothness and appearance of the top coating layer may be poor.
  • the first pigment may include at least one of carbon black, perylene red, manganese ferrite black, copper chromite black, bismuth vanadate, iron hydroxide yellow, chromium oxide green, and cobalt aluminate blue.
  • carbon black perylene red
  • manganese ferrite black and perylene red may be included.
  • the first pigment is included in 5 to 50 parts by weight based on 100 parts by weight of the fluorine-based resin.
  • dispersibility is excellent, and durability and mechanical properties of the top coating layer can be prevented from deteriorating.
  • the first pigment is included in an amount of less than 5 parts by weight, the effect of addition is insignificant, and when it is included in an amount exceeding 50 parts by weight, sufficient dispersion in the top coating agent is difficult, and the appearance and durability of the top coating layer may be deteriorated.
  • 10 to 40 parts by weight may be included.
  • the average particle diameter of the first pigment may be 5 ⁇ 30 ⁇ m. In the above range, dispersibility and mixing properties may be excellent.
  • the molybdenum disulfide may be included for the purpose of improving the lubricity of the top coating layer.
  • the molybdenum disulfide may be included in 0.5 to 15 parts by weight based on 100 parts by weight of the fluorine-based base resin.
  • the dispersibility is excellent, and the lubricity of the top coating layer and the non-stick properties in which food ingredients do not stick to the surface of the top coating layer may be excellent.
  • 3 to 15 parts by weight may be included.
  • the phosphoric acid ester compound may be included for the purpose of improving durability of the top coating layer of the present invention and adhesion to the substrate.
  • the phosphoric acid ester compound may be a phosphoric acid ester compound including at least one of a hydroxy group and a carboxyl group.
  • the phosphoric acid ester-based compound is included in 1 to 15 parts by weight based on 100 parts by weight of the fluorine-based resin.
  • durability and adhesion of the top coating layer are excellent, and the viscosity of the top coating agent can be prevented from being excessively increased.
  • the phosphoric acid ester-based compound is included in an amount of less than 1 part by weight, the adhesion of the top coating layer is deteriorated. For example, 1 to 8 parts by weight may be included.
  • the top coating agent may further include 0.5 to 5 parts by weight of germanium oxide based on 100 parts by weight of the fluorine-based base resin.
  • the germanium oxide may be included for the purpose of improving the interlayer adhesion of the top coating layer of the present invention.
  • the germanium oxide is included in an amount of less than 0.5 parts by weight, the adhesion of the top coating layer of the present invention is lowered, and when it is included in an amount exceeding 5 parts by weight, the mixability of the top coating agent decreases, and smoothness and appearance may be poor.
  • 1 to 3 parts by weight may be included.
  • the average particle diameter of the germanium oxide may be 0.1 ⁇ 20 ⁇ m. In the above range, dispersibility and blendability are excellent, and interlayer adhesion of the top coating layer may be excellent.
  • the germanium oxide and phosphoric acid ester compound may be included in a weight ratio of 1:1 to 1:5.
  • the blendability and workability of the top coating agent are excellent, the interlayer adhesion and durability of the top coating layer are excellent, and the smoothness and appearance of the top coating layer may be excellent at the same time.
  • germanium oxide and phosphoric acid ester compounds may be included in a weight ratio of 1:2 to 1:4.
  • the average particle diameter of the molybdenum disulfide may be 1 ⁇ 80 ⁇ m. In the above range, dispersibility and mixing properties may be excellent.
  • the top coating agent may further include a solvent.
  • the solvent is water, alcohol having 1 to 10 carbon atoms, toluene, xylene, diisobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, 1-methoxy-2-propanol, ethanol, Butyl cellosolve, cyclohexane, n-butyl acetate, N-methylpyrrolidone, dimethylformamide, ethyl acetate, acetone, methyl acetate, isobutyl acetate, isopropyl acetate, and dimethyl carbonate.
  • the alcohol having 1 to 10 carbon atoms may include one or more of methanol, ethanol, propanol, isopropanol, n-butanol, and isobutanol.
  • the solvent may be included in an amount of 10 to 500 parts by weight based on 100 parts by weight of the fluorine-based base resin. When included in the above range, the dispersibility and workability of the components of the top coating agent may be excellent.
  • the top coating agent may further include additives such as a surfactant, a leveling agent, and an antifoaming agent.
  • the additive may be included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the fluorine-based base resin.
  • the heat treatment may be performed at 380 to 450°C. Under the above conditions, the primer layer, the toning layer, the thermochromic layer, and the top coating layer are cured, so that interlayer adhesion and durability may be excellent.
  • the thickness of the top coating layer may be 5 ⁇ 30 ⁇ m. In one embodiment, the thickness of the top coating layer may be measured from the surface of the thermochromic layer. Durability of the top coating layer may be excellent under the above thickness condition.
  • thermochromic composite coating layer Cooking utensils manufactured by the cooking utensil manufacturing method
  • the cookware is a metal substrate; A primer layer comprising a fluorine-based resin formed on at least one surface of the metal substrate; A toning layer formed on at least a part of the surface of the primer layer; A thermochromic layer formed on at least a part of the surface of the primer layer; And a top coating layer formed on the surface of the thermochromic layer, wherein the top coating layer comprises: 100 parts by weight of a fluorine-based base resin; 10 to 50 parts by weight of an alkoxy silane compound; 5 to 50 parts by weight of the first pigment; 0.5 to 15 parts by weight of molybdenum disulfide; 1 to 15 parts by weight of a phosphoric acid ester compound; And 0.5 to 5 parts by weight of germanium oxide; and 100 parts by weight of a fluorine-based base resin in the top coating layer; 10 to 50 parts by weight of an alkoxy silane compound; 5 to 50 parts by weight of the first
  • the top coating agent further includes 0.5 to 5 parts by weight of germanium oxide based on 100 parts by weight of the fluorine-based base resin, and the germanium oxide and phosphate ester compound may be included in a weight ratio of 1:1 to 1:5.
  • the primer agent and the top coating agent constituting the primer layer the toning coating agent and the thermochromic layer coating agent constituting the toning layer, the same components and contents as described above may be applied, a description thereof will be omitted.
  • Fluorine base resin Polytetrafluoroethylene (PTFE) and tetrafluoroethylene-hexafluoropropylene copolymer (FEP) were used.
  • Second pigment Perylene red (first primer) and manganese ferrite black (second primer).
  • Germanium oxide having an average particle diameter of 10 ⁇ m was used.
  • Fluorine base resin Polytetrafluoroethylene (PTFE) and tetrafluoroethylene-hexafluoropropylene copolymer (FEP) were used.
  • Alkoxy silane compound Glycidoxypropyltriethoxysilane was used.
  • Primer layer formation After degreasing one surface of the metal substrate (stainless steel), pretreatment was performed by sandblasting using 60 mesh aluminum oxide. Then, the components and contents shown in Table 1 were applied, but only the type of the second pigment was changed to prepare a first primer agent and a second primer agent. A first primer layer was formed by spraying a first primer on the pretreated surface of the metal substrate, and then a second primer was applied to the edge of the surface of the first primer layer using a spray. It dried at ⁇ 100 °C to form a second primer layer. The sum of the thicknesses of the first and second primer layers was 12 to 15 ⁇ m.
  • thermochromic layer formation A toning coating comprising 100 parts by weight of a matrix resin (polyphenylene sulfide) and 30 parts by weight of a toning pigment (titanium dioxide) is applied to a part of the surface on which the second primer layer is formed. A toning layer (specific pattern type) having a thickness of 5 to 10 ⁇ m was formed. Then, a thermochromic coating agent including 100 parts by weight of a thermochromic compound (Ag 2 HgI 4 ) and 15 parts by weight of a discoloration pigment (iron oxide red) was applied to the central part of the surface of the second primer layer, and 5 to 10 ⁇ m A thick thermochromic layer was formed.
  • a matrix resin polyphenylene sulfide
  • a toning pigment titanium dioxide
  • Top coating layer formation and heat treatment A top coating agent containing the components and contents of Table 2 below was prepared and coated on the surfaces of the toning layer, the thermochromic layer, and the second primer layer using a conventional method, and then 430 Heat treatment at ⁇ 440 °C to form a top coating layer 12 ⁇ 15 ⁇ m thickness to prepare a cooking utensils (frying pan).
  • Pencil hardness Measured according to JIS K5600-5-4.
  • Abrasion resistance evaluation Whether the coating film is damaged after rotating 15000 times at a load of 3 kg and a speed of 60 rpm using a taber wear tester on the surface of the cooking utensils of Examples and Comparative Examples on which the composite coating layer is formed. Was confirmed and evaluated (( ⁇ : no damage, ⁇ : part of the coating film was damaged, X: most of the coating film was damaged).
  • FIG. 3 is a photograph of the cookware manufactured according to Example 1
  • FIG. 4 is a photograph of the cookware manufactured according to Example 1 after heating.
  • discoloration does not occur at room temperature, so that the thermochromic layer is not visible, but when heated above a predetermined temperature, discoloration (pattern) of the thermochromic layer appears. It can be seen that the heating state of the appliance can be easily identified.
  • Examples 1 to 3 in which the composite coating layer according to the present invention is applied are excellent in abrasion resistance of the thermochromic composite coating layer and adhesion between the coating layers, and are easy to clean and manage due to excellent antifouling properties.
  • the non-stick characteristic of the composite coating layer was excellent in preventing the food ingredients from sticking to the surface during cooking.
  • Comparative Examples 1 to 6 deviating from the present invention it was found that the appearance, abrasion resistance, adhesion, or antifouling properties were lower than those of Examples 1 to 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un ustensile de cuisson comprenant une couche de revêtement composite thermochromatique et un ustensile de cuisson ainsi fabriqué. Dans un mode de réalisation spécifique, le procédé de fabrication d'un ustensile de cuisson comprenant une couche de revêtement composite thermochromatique comprend les étapes consistant : à former une couche d'apprêt comprenant une résine à base de fluor sur la surface d'une base métallique; à former une couche de toner par l'application d'un agent de revêtement de toner comprenant une résine de matrice et un pigment de toner sur au moins une partie de la surface de la couche d'apprêt; à former une couche thermochromatique par l'application d'un agent de revêtement thermochromatique comprenant un composé thermochromatique et un pigment chromatique sur au moins une partie de la surface de la couche d'apprêt; et à former une couche de revêtement supérieure par l'application d'un agent de revêtement supérieur sur la surface de la couche d'apprêt avec la couche thermochromatique formée sur cette dernière et à la traiter thermiquement, l'agent de revêtement supérieur comprenant : 100 parties en poids d'une résine de base à base de fluor; de 10 à 50 parties en poids d'un composé alcoxy-silane; de 5 à 50 parties en poids d'un premier pigment; de 0,5 à 15 parties en poids de disulfure de molybdène; et de 1 à 15 parties en poids d'un composé à base d'ester de phosphate.
PCT/KR2020/006085 2019-05-22 2020-05-08 Procédé de fabrication d'un ustensile de cuisson comprenant une couche de revêtement composite thermochromatique et ustensile de cuisson ainsi fabriqué WO2020235844A1 (fr)

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CN114305120A (zh) * 2021-12-20 2022-04-12 浙江百特厨具有限公司 一种烹饪器具及制备方法
KR20240013483A (ko) * 2022-07-22 2024-01-30 (주) 씨에프씨테라메이트 비스무스 바나데이트를 이용한 온도센서용 시온 안료를 포함하는 열변색층을 갖는 조리기구 및 이의 제조 방법

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