CN112137421B - Paint and cooking utensil - Google Patents
Paint and cooking utensil Download PDFInfo
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- CN112137421B CN112137421B CN202010597711.7A CN202010597711A CN112137421B CN 112137421 B CN112137421 B CN 112137421B CN 202010597711 A CN202010597711 A CN 202010597711A CN 112137421 B CN112137421 B CN 112137421B
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- coating
- stick
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- layer
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- 238000010411 cooking Methods 0.000 title claims abstract description 51
- 239000003973 paint Substances 0.000 title abstract description 46
- 238000000576 coating method Methods 0.000 claims abstract description 269
- 239000011248 coating agent Substances 0.000 claims abstract description 261
- 239000000463 material Substances 0.000 claims abstract description 216
- 239000011148 porous material Substances 0.000 claims abstract description 85
- 239000000126 substance Substances 0.000 claims abstract description 43
- 239000010410 layer Substances 0.000 claims description 101
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 27
- 239000011247 coating layer Substances 0.000 claims description 27
- 239000011737 fluorine Substances 0.000 claims description 27
- 229910052731 fluorine Inorganic materials 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000010439 graphite Substances 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 12
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- 239000002318 adhesion promoter Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 150000001282 organosilanes Chemical class 0.000 claims description 4
- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical compound OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 230000002045 lasting effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000002035 prolonged effect Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- -1 cyanoacetoxy Chemical group 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000008157 edible vegetable oil Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004830 Super Glue Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- WDJHALXBUFZDSR-UHFFFAOYSA-M acetoacetate Chemical compound CC(=O)CC([O-])=O WDJHALXBUFZDSR-UHFFFAOYSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
Abstract
The application provides a coating and a cooking utensil, wherein the coating comprises a non-stick coating, and the coating further comprises an inorganic non-stick material and a substance containing a reactive group; the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the coating is 1-20%. The application can improve the adhesive force of the paint and strengthen the bonding force of the non-stick layer and the vessel.
Description
Technical Field
The application relates to the technical field of non-stick materials, in particular to a coating and a cooking utensil.
Background
The non-stick paint is a special paint with the surface of the coating not easy to be adhered by other sticky substances or easy to be removed after being adhered, has the advantages of small friction coefficient, low surface energy, non-stick, good weather resistance and the like, and is widely applied to the fields of household appliances, cooking cookware, automobiles and the like. Cooking appliances such as a conventional non-stick pan are used for cooking foods, have the advantages of non-stick pan for frying/frying foods, less oil smoke, easy cleaning and the like, and have been popular among consumers since the advent of the prior art. Along with the development of economy and the improvement of living standard of people, the requirements on cooking appliances are higher and higher, so that the improvement of the service performance of the non-stick layer is always the direction of scientific researchers.
The existing cooking utensil can achieve the non-stick effect by coating the non-stick coating on the surface of the utensil to form a non-stick layer. However, the non-stick coating obtained by coating the existing non-stick coating has the defect that the non-stick coating can quickly lose efficacy under the conditions of high alkalinity and surface abrasion, and the non-stick service life is short.
Disclosure of Invention
The application provides a coating and a cooking utensil, which are used for improving the adhesive force of the coating and enhancing the binding force of a non-stick layer and a vessel.
A first aspect of the present application provides a coating comprising a non-stick coating, the coating further comprising an inorganic non-stick material and a reactive group containing substance;
the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the coating is 1-20%.
The coating comprises a non-stick coating, an inorganic non-stick material and a substance containing reactive groups, wherein the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the inorganic porous material and the self-lubricating material have good thermal stability and high temperature resistance because of stable crystal and high melting point, so that the structural stability of the coating is improved by adding the inorganic non-stick material on the base material of the existing non-stick coating, and the coating is not easy to change and age in the cooking process. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and are not easy to scratch, so that the durability of the coating can be effectively improved, and the service life of the coating is prolonged. The mass ratio of the inorganic non-stick material in the coating is 1-20%, so that the influence of excessive inorganic non-stick material on the film forming performance and the later construction performance of the coating is avoided. And the substance containing the reactive group in the coating can form a covalent bond with the surface oxide of the vessel, so that the binding force between the coating and the vessel is enhanced.
In addition, the inorganic porous material also has non-stick performance due to the characteristics of low surface energy and porous oil absorption, and the self-lubricating material also has non-stick performance due to the characteristics of self-lubrication and porous oil absorption formed by lamellar crystals, so that the non-stick performance of the non-stick paint can be assisted
Optionally, the mass ratio of the substances containing the reactive groups in the coating is 0.5% -5%, so that the binding force of the coating can be improved, the coating formed by the coating is prevented from falling off from the surface of the vessel, and the film forming performance of the coating is not affected, so that the coating can form a smooth continuous coating.
Optionally, the inorganic non-stick material comprises a self-lubricating material, and the mass ratio of the self-lubricating material in the coating is 1-10%, so that the coating has lasting non-stick performance and does not fall off due to lamellar lubrication.
Optionally, the inorganic non-stick material comprises an inorganic porous material, and the mass ratio of the inorganic porous material in the coating is 1% -20%, so that the coating has lasting non-stick performance and keeps good film forming performance.
Optionally, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, and the mass proportion of the inorganic non-stick material in the coating is 1-15%.
The inorganic non-stick material in the coating comprises a self-lubricating material and an inorganic porous material, so that the coating has the performances of the inorganic porous material and the self-lubricating material at the same time, and the non-stick effect of the coating is improved; the mass ratio of the inorganic non-stick material is 1-15%, so that the paint has lasting non-stick performance and keeps better film forming performance.
Optionally, the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% -50%, and the mass ratio of the inorganic porous material is 50% -80%.
The content of the inorganic porous material in the inorganic non-stick material is not less than the content of the self-lubricating material, so that the self-lubricating performance of the paint is prevented from being too high, the binding force between the paint and a vessel or between two adjacent paint layers formed by the paint is reduced, the paint is easy to fall off, and the non-stick life of the cooking utensil is influenced; the mass ratio of the self-lubricating material is not less than 20%, so that the self-lubricating material and the inorganic porous material play a role in non-sticking together, and the influence of greasy dirt or impurities on the non-sticking performance in the using process is reduced.
Optionally, the granularity of the inorganic non-stick material is 300-2000 meshes, so that the inorganic non-stick material has a complete surface structure, has good non-stick performance, and can be uniformly mixed with the non-stick coating to form a smooth and uniform non-stick layer on the surface of the vessel.
Optionally, the inorganic porous material is one or more of diatomite, bentonite or zeolite which are mixed in any proportion, that is, the inorganic porous material is made of natural inorganic porous materials such as diatomite, bentonite or zeolite, and the raw materials are convenient to obtain, so that the manufacturing cost is reduced.
Optionally, the self-lubricating material is one or more of graphite, graphite fluoride or molybdenum disulfide which are mixed in any proportion, that is, the self-lubricating material is made of natural inorganic self-lubricating materials such as graphite, graphite fluoride or molybdenum disulfide, and the raw materials are convenient to obtain, so that the manufacturing cost is reduced.
Alternatively, the reactive group-containing substance is a compound or mixture containing a hydroxyl group or a carboxyl group.
Optionally, the reactive group-containing material is one or more of an organosilane, an adhesion promoter, or a melamine acrylate, mixed in any ratio.
A second aspect of the present application provides a cooking appliance comprising a vessel, the surface of the vessel being provided with a non-stick layer comprising a primer layer applied to the surface of the vessel, characterised in that the components of the primer layer comprise a non-stick coating, an inorganic non-stick material and a substance containing reactive groups;
The inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the bottom coating is 1% -20%.
Optionally, the non-stick layer comprises at least a primer layer, the primer layer is coated on the surface of the vessel, and the primer layer is coated by the paint.
The non-stick layer of the cooking utensil at least comprises a bottom coating, wherein the bottom coating is coated on the surface of the utensil, and the bottom coating is formed by coating, so that the durability and the bonding performance of the bottom coating are improved, the service life of the non-stick layer is prolonged through bonding the bottom coating and the surface of the utensil, and the bonding force of the non-stick layer is improved.
Optionally, the non-stick layer further comprises a middle coating layer applied to a side of the base coating layer facing away from the vessel, the components of the middle coating layer comprising a non-stick coating and an inorganic non-stick material.
The cooking utensil further comprises a middle coating, wherein the middle coating is coated on one side of the bottom coating, which is far away from the utensil, and the components of the middle coating comprise non-stick coating and inorganic non-stick material, and the middle coating is not in direct contact with the utensil, so that the coating adopted by the middle coating does not contain substances containing reactive groups, the composition of the substances of the middle coating can be simplified, the manufacturing process is simplified, the raw materials are saved, and the production cost is reduced.
Optionally, the inorganic non-stick material is a self-lubricating material;
the mass ratio of the self-lubricating material in the bottom coating is 2% -5%; and/or
The mass ratio of the self-lubricating material in the middle coating is 5% -8%.
In the non-stick layer of the cooking utensil, the mass proportion of the self-lubricating material allowed in the bottom coating is smaller, so that the self-lubricating performance of the bottom coating is prevented from being too high, the binding force between the bottom coating and a vessel is reduced, and the coating is easy to fall off; the mass proportion of the self-lubricating material allowed in the middle coating is larger, so that the middle coating has lasting non-stick performance, and the service life of the cooking utensil is prolonged.
Optionally, the inorganic non-stick material is an inorganic porous material;
the mass ratio of the inorganic porous material in the bottom coating is 5% -15%; and/or
The mass ratio of the inorganic porous material in the middle coating is 5-10%.
In the non-stick layer of the cooking utensil, the mass proportion of the inorganic porous material allowed in the bottom coating is larger, and the mass proportion of the inorganic porous material allowed in the middle coating is smaller, so that the bottom coating has longer non-stick performance than the middle coating, and the service life of the cooking utensil is prolonged.
Optionally, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, wherein the mass proportion of the self-lubricating material in the inorganic non-stick material is 20% -50%, and the mass proportion of the inorganic porous material is 50% -80%;
the mass ratio of the inorganic non-stick material in the bottom coating is 5% -15%; and/or
The mass ratio of the inorganic porous material in the middle coating is 5-10%.
The inorganic non-stick material in the non-stick layer of the cooking utensil comprises the self-lubricating material and the inorganic porous material, so that the coating has the performances of the inorganic porous material and the self-lubricating material, and the non-stick effect of the coating is improved; the content of the inorganic porous material is not less than that of the self-lubricating material, so that the self-lubricating performance of the paint is prevented from being too high, the binding force between the paint and a vessel or between two adjacent coatings formed by the paint is reduced, the coatings are easy to fall off, and the non-stick life of the cooking utensil is influenced; the mass proportion of the inorganic non-stick material allowed in the bottom coating is larger, and the mass proportion of the inorganic non-stick material allowed in the middle coating is smaller, so that the bottom coating has longer non-stick performance than the middle coating, and the service life of the cooking utensil is prolonged.
Optionally, the non-stick coating is a fluorine-containing coating, the non-stick layer further comprises a top coating, the top coating is coated on one side of the middle coating, which is away from the bottom coating, and the top coating is formed by coating the fluorine-containing coating.
Because the fluorine-containing coating has higher non-stick performance and film forming performance, the non-stick performance of the inorganic non-stick material is slightly inferior to that of the fluorine-containing coating, and the film forming performance is poor; the non-stick layer of the cooking utensil adopts the fluorine-containing paint to form the surface coating, so that the non-stick effect of the cooking utensil in the initial stage of use can be optimized, the non-stick layer can form a smooth and flat surface, the non-stick layer adopts the paint to form the bottom coating and/or the middle coating, and the cooking utensil can have a lasting non-stick effect.
Optionally, the thickness of the non-adhesive layer is 30 μm to 45 μm, and in the thickness range, the non-adhesive layer can be ensured to completely cover the vessel, has better hardness and higher non-adhesive performance, and also has better appearance and good workability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic partial structure of a cooking appliance according to an embodiment of the present application.
Reference numerals:
1-a vessel;
2-a non-stick layer;
20-an undercoat layer;
22-a middle coating;
24-top coat.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In the description of the present application, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present application, it should be understood that the terms "upper," "lower," and the like in the embodiments of the present application are described in terms of angles shown in the accompanying drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
The embodiment of the application provides a coating, which comprises a non-stick coating, an inorganic non-stick material and a substance containing a reactive group, wherein the non-stick coating can be any existing non-stick coating, such as a fluorine-containing coating or a ceramic coating, and the like, that is, the inorganic non-stick material and the substance containing the reactive group are added on the basis of the existing non-stick coating to form a new coating; the inorganic non-stick material includes an inorganic porous material and/or a self-lubricating material, that is, the inorganic non-stick material may include only the inorganic porous material, may include only the self-lubricating material, and may include both the inorganic porous material and the self-lubricating material. The inorganic porous material and the self-lubricating material have stable crystal and high melting point, so that the inorganic porous material and the self-lubricating material have better thermal stability and high temperature resistance, and the inorganic non-stick material is added on the base material of the existing non-stick coating to increase the structural stability of the coating, so that the coating is not easy to generate biomass change and aging in the cooking process. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and are not easy to scratch, so that the durability of the coating can be effectively improved, and the service life of the coating is prolonged. And the substance containing the reactive group in the coating can form a covalent bond with the surface oxide of the vessel, so that the binding force between the coating and the vessel is enhanced.
Further, the mass ratio of the inorganic non-stick material in the coating is 1% -20%, so that the influence of excessive inorganic non-stick material on the film forming performance and the later construction performance of the coating is avoided; when the mass ratio of the inorganic non-stick material is more than 20%, the inorganic non-stick material is excessive, resulting in difficulty in forming a smooth and uniform coating layer of the coating material, or in difficulty in bonding the coating material to the vessel 1, resulting in easy falling of the coating layer; when the mass ratio of the inorganic non-stick material is less than 1%, the inorganic non-stick material is too small to effectively function, and the coating layer is still easily worn and rapidly loses the non-stick property.
Specifically, the mass ratio of inorganic non-stick material in the coating may be, for example, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5% or 20%, etc., typical but not limiting.
In one embodiment, the inorganic non-stick material comprises only self-lubricating material, and the mass ratio of the self-lubricating material in the coating is 1% -10%, for example, the mass ratio of the self-lubricating material can be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or 10%, etc. In the range, the coating has lasting non-stick performance and maintains stronger bonding performance; when the mass ratio of the self-lubricating material is more than 10%, the self-lubricating performance of the paint is too high, so that the binding force between the paint and the vessel 1 or between two adjacent coatings formed by the paint is reduced, the coatings are easy to fall off, and the non-stick life of the cooking utensil is influenced; when the mass ratio of the self-lubricating material is less than 1%, the content of the self-lubricating material in the coating is too small to effectively play a role, and the coating is still easy to wear and rapidly loses the non-stick property.
In another embodiment, the inorganic non-stick material comprises only inorganic porous material, and the mass ratio of inorganic porous material in the coating is 1% -20%, for example, the mass ratio of inorganic porous material may be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, or 20%, etc. In the range, the coating has lasting non-stick performance and keeps better film forming performance; when the mass ratio of the inorganic porous material is more than 20%, the content of the inorganic porous material in the coating is excessive, so that the coating is difficult to form a smooth and uniform coating; when the mass ratio of the inorganic porous material is less than 1%, the content of the inorganic porous material in the coating is too small to effectively function, and the coating is still easily worn and rapidly loses the non-stick property.
In yet another embodiment, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, so that the coating has the properties of the inorganic porous material and the self-lubricating material at the same time, thereby improving the non-stick effect of the coating; the mass ratio of the inorganic non-stick material in the coating is 1% to 15%, for example, the mass ratio of the inorganic non-stick material in the coating may be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5% or 15%, etc. In this range, the paint can have lasting non-stick property and maintain good film forming property. When the mass ratio of the inorganic non-stick material in the coating is more than 15%, the content of the inorganic non-stick material in the coating is excessive, so that the binding force and film forming performance of the coating are reduced, the coating formed by the coating is easy to fall off, and the coating is difficult to form a smooth and uniform coating; when the mass ratio of the inorganic non-stick material in the coating is less than 1%, the inorganic non-stick material content in the coating is too small to effectively function, and the coating is still easily worn and rapidly loses the non-stick property.
Preferably, when the inorganic non-stick material includes a self-lubricating material and an inorganic porous material, the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% to 50%, the mass ratio of the inorganic porous material is 50% to 80%, for example, the mass ratio of the inorganic porous material may be 50%, 55%, 60%, 65%, 70%, 75% or 80%, etc., and accordingly, the mass ratio of the self-lubricating material may be 50%, 45%, 40%, 35%, 30%, 25% or 20%, etc. On the one hand, the self-lubricating material has poor bonding performance, the formed coating is easy to fall off, the mass proportion of the self-lubricating material is not more than 50 percent, and the mass proportion of the inorganic porous material is not less than 50 percent, so that the content of the inorganic porous material is not less than the content of the self-lubricating material, the self-lubricating performance of the coating is prevented from being too high, the bonding force between the coating and a vessel 1 or between two adjacent coatings formed by the coating is reduced, the coating is easy to fall off, and the non-stick life of a cooking utensil is influenced; on the other hand, micropores of the inorganic porous material are easily blocked by greasy dirt or impurities and the like in the using process, so that the non-sticky performance is reduced, the mass proportion of the self-lubricating material is not less than 20%, and the mass proportion of the inorganic porous material is not more than 80%, so that the self-lubricating material and the inorganic porous material play a role in non-sticky together, and the influence of the greasy dirt or impurities on the non-sticky performance in the using process is reduced.
Further, the inorganic porous material is one or more of diatomite, bentonite or zeolite. And because the materials of diatomite, bentonite or zeolite have similar characteristics, the materials have similar low surface energy, microporous structure, stable crystal, melting point and hardness, which can influence the non-stick property and the non-stick service life. Thus, when the inorganic porous material is a mixture of a plurality of kinds of diatomaceous earth, bentonite or zeolite (a plurality of kinds in this application, including two kinds and more), the inorganic porous material is mixed in an arbitrary ratio of any of the plurality. The inorganic porous material is made of natural inorganic porous materials such as diatomite, bentonite or zeolite, and the like, the raw materials are convenient to obtain, and the manufacturing cost is reduced.
In particular, inorganic porous materials have non-stick properties due to the low surface energy and porous oil absorption properties. Taking diatomite as an example to describe the non-stick performance of the inorganic porous material in detail, the diatomite is composed of amorphous hydrous silicon dioxide, the silicon dioxide is of an amorphous structure, and atoms are arranged in a three-dimensional space in a short-range ordered way and a long-range disordered way, so that the surface energy is smaller, and the diatomite layer has better non-stick performance; in addition, the diatomite has a special porous structure, the pore diameter is in the micron level, and a large amount of edible oil can be adsorbed in the use process, so that a layer of oil film is always maintained on the surface of the diatomite layer, the non-stick performance of the diatomite layer is further enhanced, and the cooking utensil achieves a good non-stick effect.
Further, the self-lubricating material is one or more of graphite, graphite fluoride or molybdenum disulfide. And because the characteristics of the graphite, graphite fluoride or molybdenum disulfide materials are similar, layered crystals, microporous structures, stable crystals, similar melting points and similar hardness can be influenced on non-stick performance and non-stick service life in each material. Therefore, when the self-lubricating material is a mixture of a plurality of kinds of graphite, graphite fluoride or molybdenum disulfide, the self-lubricating material is mixed in any ratio of any of the plurality of kinds. The self-lubricating material is made of natural inorganic self-lubricating materials such as graphite, graphite fluoride or molybdenum disulfide, and the like, so that the raw materials are convenient to obtain, and the manufacturing cost is reduced.
In particular, the self-lubricating material has non-stick properties due to the self-lubricating and porous oil absorbing properties of the lamellar crystals. Taking natural crystalline graphite as an example to describe the non-stick performance of the self-lubricating material in detail, the natural crystalline graphite has a layered crystal structure, so that the natural crystalline graphite has good self-lubricating performance; the carbon atoms form a hexagonal reticular graphite layer surface by sp2 hybridization orbit, the bond energy between carbon and carbon belongs to a resonance R-bond, and the bond energy is as high as 627kJ/mol, so that the single-layer graphite layer surface has firm property and prevents mechanical scratch in the use process; the acting force between graphite layers belongs to weak van der Waals force, and the bond energy is only 5.4kJ/mol, so that the multi-layer graphite layers have good interlayer slip property, and the natural crystalline graphite has non-adhesive property. In addition, a plurality of gaps are arranged between the graphite lamellar structures, the size of the gaps is in the micron level, and a large amount of edible oil can be adsorbed in the actual use process, so that the surface always maintains a layer of oil film, and the non-stick performance is further enhanced.
Further, the mass ratio of the substances containing the reactive groups in the coating is 5% or less; preferred are: for example, the mass ratio of the reactive group-containing substance in the coating material may be 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%. In the range, the binding force of the paint can be improved, the coating formed by the paint is prevented from falling off from the surface of the vessel 1, and the film forming performance of the paint is not influenced, so that the paint can form a smooth continuous coating; when the mass ratio of the reactive group-containing substance is more than 5%, the reactive group-containing substance is excessive, resulting in difficulty in forming a smooth and uniform non-stick coating layer on the coating material; when the mass ratio of the reactive group-containing substance is less than 0.5%, the reactive group-containing substance is too small to exert an effective effect, the bonding property between the coating layer formed by the paint and the vessel 1 is still poor, and the non-adhesive layer 2 is still easily peeled off.
Further, the reactive group-containing substance is a compound or mixture of hydroxyl or carboxyl groups capable of interacting with the compound on the surface of the vessel, thereby firmly bonding the coating to the vessel.
Further, the reactive group-containing substance is one or more of organosilane, adhesion promoter (such as cyanoacetoxy wet adhesion promoter, acetoacetate adhesion promoter or HMDAA, etc.), or melamine acrylate, mixed at any ratio.
The non-stick coating of the embodiments of the present application is an existing non-stick coating, such as a fluorine coating or a ceramic coating, and the like. Particularly, the fluorine paint is very easy to be shoveled off in long-term use due to the soft texture; thus, the existing fluorine coating materials are particularly required to be added with the inorganic non-stick material and the substance containing the reactive group so as to improve the hardness, heat resistance and binding force.
To illustrate the binding properties of the above-described coatings of the present application, the present application performed a binding property comparison experiment with the existing fluorine coating as a representative of the non-stick coating. Specifically, the existing fluorine paint, the inorganic non-stick material added to the fluorine paint and the substance containing the reactive group are respectively coated on the surface of a vessel to form a coating, and the adhesion of the coating is tested, and the comparative experiment is shown in tables 1-4.
Specific test procedures can be referred to as follows: the coating surface on the test plate is bonded with the coating on the other test column through an adhesive (epoxy resin adhesive and quick-drying cyanoacrylate adhesive), the vertical upward stress of the coating is measured through a hydraulic or mechanical method, and the measured tensile force of unit area is used for representing the adhesive force of the coating.
Wherein, each sample number represents a group of sample cookware, the experimental result is the average value of the experimental results of the group of sample cookware, for example, 1# represents a group of existing fluorine paint non-stick cookware, and the adhesive force 1.6 is the average value of the adhesive force of the group of fluorine paint cookware.
The various sets of examples were identical except for the coating, other parameters (e.g., shape, size, material, thickness, molding process, pretreatment, etc. of the vessel), and the remaining experimental conditions were identical.
TABLE 1
TABLE 2
TABLE 3 Table 3
TABLE 4 Table 4
As can be seen from the data in tables 1-4, the adhesion force is reduced after the inorganic non-stick material is added into the fluorine-containing paint, resulting in poor bonding performance of the paint to the vessel; after further addition of the substance containing a reactive group, the adhesion is enhanced. When the addition amount of the substance containing the reactive group is 0.5-5%, the adhesive force is obviously enhanced, and the more the addition amount of the substance containing the reactive group is, the more the adhesive force is enhanced; when the addition amount of the substance containing the reactive group is less than 0.5%, the adhesive force of the coating is not obviously increased, and the adhesive force is still lower than that of the existing fluorine-containing coating and cannot meet the use requirement; when the addition amount of the reactive group-containing substance exceeds 5%, the film forming property is affected, and thus the experimental test cannot be performed. In addition, when the mass ratio of the inorganic non-stick material exceeds 20%, the sample has an unacceptable coating, and thus experimental tests cannot be performed. It is to be noted that, when the mass ratio of the inorganic non-stick material is less than 1%, and as long as the reactive group is added in a proper ratio, the qualification of the coating is not affected, and the coating also has good adhesion, but the non-stick performance of the vessel is affected.
Further, the particle size of the inorganic non-stick material is 300 mesh to 2000 mesh, preferably 500 mesh to 1000 mesh, and typical but non-limiting, the particle size of the self-lubricating material may be 300 mesh, 400 mesh, 500 mesh, 600 mesh, 700 mesh, 800 mesh, 900 mesh, 1000 mesh, 1100 mesh, 1200 mesh, 1300 mesh, 1400 mesh, 1500 mesh, 1600 mesh, 1700 mesh, 1800 mesh, 1900 mesh, 2000 mesh, or the like, for example. The inorganic non-stick material has a complete surface structure, has good non-stick performance, and can be uniformly mixed with the non-stick coating to form a smooth and uniform coating on the surface of the vessel 1; when the particle size of the inorganic non-stick material is smaller than 2000 mesh, the structure (such as a porous or lamellar crystal structure) of the inorganic non-stick material itself forming non-stick property is destroyed due to the undersize of the inorganic non-stick material, thereby losing the non-stick property, and also causing excessive processing cost of the inorganic non-stick material; when the particle size of the inorganic non-stick material is more than 300 mesh, the inorganic non-stick material is difficult to be uniformly mixed with the non-stick coating due to the oversized inorganic non-stick material, or the coating surface formed by the coating is not smooth and takes on a granular feel.
Specifically, the inorganic non-stick material is mixed with the non-stick coating after being ground, and the mixture is stirred and dispersed uniformly to form the coating provided by the embodiment of the application. The reactive group-containing material can be added directly to the non-stick coating and thoroughly stirred to homogeneity.
The inorganic non-stick material may be added in the form of powder or slurry. Preferably, the inorganic non-stick material is milled to a suitable particle size and then mixed with the non-stick coating in powder or slurry form. When the inorganic non-stick material is added in a slurry state, mixing and ball milling the inorganic non-stick material and polyethylene glycol (0.1% -20%) in proportion to obtain powder; adding the powder obtained by ball milling into an aqueous solvent (at least one of water, ethanol, methanol and the like), adding a proper amount of auxiliary agents (such as a dispersing agent, a defoaming agent and the like), and uniformly stirring to obtain slurry, wherein the concentration of the slurry is 1% -70%, and preferably 25% -50%.
Typically, but not by way of limitation, the slurry concentration (mass proportion of inorganic non-stick material in the slurry) may be, for example, 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% or 70%, etc.
As shown in fig. 1, the embodiment of the present application further provides a cooking appliance, which includes a vessel 1, wherein a non-stick layer 2 is provided on the surface of the vessel 1, the non-stick layer 2 includes a primer layer 20 applied to the surface of the vessel 1, and the primer layer 20 includes a non-stick coating, an inorganic non-stick material, and a substance containing a reactive group; the inorganic non-stick material comprises inorganic porous material and/or self-lubricating material, the mass proportion of the inorganic non-stick material in the base coat 20 is 1% -20%, the durability and the bonding performance of the base coat 20 are improved, the service life of the non-stick layer 2 is prolonged through the firm bonding of the base coat 20 and the surface performance of the vessel 1, and the bonding force of the non-stick layer 2 is improved.
Specifically, the mass ratio of the inorganic non-stick material in the primer layer 20 may be, for example, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, or 20%, etc., typical but not limiting.
Further, the non-stick layer 2 further includes a middle coating layer 22, the middle coating layer 22 is coated on the side of the bottom coating layer 20 facing away from the vessel 1, and the components of the middle coating layer 22 include a non-stick coating and an inorganic non-stick material, and as the middle coating layer 22 is not directly contacted with the vessel 1, the coating material adopted by the middle coating layer 22 can not contain substances containing reactive groups, so that the substance composition of the middle coating layer 22 can be simplified, the manufacturing process is simplified, the raw materials are saved, and the production cost is reduced. Specifically, the coating used for the middle coating 22 may be an existing non-stick coating; the non-stick paint can also be a mixture of the existing non-stick paint and inorganic non-stick material; as well as primer layer 20.
In one embodiment, the inorganic non-stick material added to the coating is a self-lubricating material; the mass ratio of the self-lubricating material in the bottom coating 20 is 2% -5%; and/or the mass proportion of self-lubricating material in the intermediate coating 22 is 5% to 8%. Specifically, that is, the primer layer 20 and the intermediate layer 22 may be arbitrarily selected to satisfy the above range; or most preferably, the primer layer 20 and the intermediate layer 22 satisfy the above ranges at the same time. The mass proportion of the self-lubricating material allowed in the primer layer 20 is small, so that the self-lubricating performance of the primer layer 20 is prevented from being too high, the binding force between the primer layer 20 and the vessel 1 is reduced, and the coating is easy to fall off; the mass ratio of the self-lubricating material allowed in the middle coating 22 is larger, so that the middle coating 22 has longer-lasting non-stick performance, and the service life of the cooking utensil is prolonged. Illustratively, the mass ratio of the self-lubricating material in the primer layer 20 may be selected as follows: 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%; the mass ratio of the self-lubricating material in the intermediate coating layer 22 can be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, etc.
In another embodiment, the inorganic non-stick material added to the coating is an inorganic porous material; the mass ratio of the inorganic porous material in the bottom coating 20 is 5% -15%; and/or the mass proportion of the inorganic porous material in the intermediate coating layer 22 is 5% to 10%. Specifically, that is, the primer layer 20 and the intermediate layer 22 may be arbitrarily selected to satisfy the above range; or most preferably, the primer layer 20 and the intermediate layer 22 satisfy the above ranges at the same time. The mass ratio of the inorganic porous material allowed in the primer layer 20 is larger and the mass ratio of the inorganic porous material allowed in the middle coating layer 22 is smaller, so that the primer layer 20 has a longer-lasting non-stick property than the middle coating layer 22, thereby prolonging the service life of the cooking appliance. Illustratively, the mass proportion of the inorganic porous material in the primer layer 20 may be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, etc.; the mass ratio of the inorganic porous material in the intermediate coating layer 22 may be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or 10%, etc.
In yet another embodiment, the inorganic non-stick material added to the coating comprises a self-lubricating material and an inorganic porous material, wherein the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% -50% and the mass ratio of the inorganic porous material is 50% -80%. And the mass ratio of the inorganic non-stick material in the bottom coating 20 is 5% -15%; and/or the mass ratio of the inorganic porous material in the intermediate coating layer 22 is 5% -10%; specifically, that is, the primer layer 20 and the intermediate layer 22 may be arbitrarily selected to satisfy the above range; or most preferably, the primer layer 20 and the intermediate layer 22 satisfy the above ranges at the same time. The inorganic non-stick material in the non-stick layer 2 comprises a self-lubricating material and an inorganic porous material at the same time, so that the coating has the performances of the inorganic porous material and the self-lubricating material at the same time, thereby improving the non-stick effect of the coating; the content of the inorganic porous material is not less than that of the self-lubricating material, so that the self-lubricating performance of the paint is prevented from being too high, the binding force between the paint and the vessel 1 or between two adjacent coatings formed by the paint is reduced, the coatings are easy to fall off, and the non-stick life of the cooking utensil is influenced; the mass ratio of the self-lubricating material is not less than 20%, so that the self-lubricating material and the inorganic porous material play a role in non-sticking together, and the influence of greasy dirt or impurities on the non-sticking performance in the using process is reduced. The mass ratio of the inorganic non-stick material allowed in the primer layer 20 is larger and the mass ratio of the inorganic non-stick material allowed in the middle coating layer 22 is smaller, so that the primer layer 20 has longer-lasting non-stick performance than the middle coating layer 22, thereby prolonging the service life of the cooking appliance, and the primer layer 20 has longer-lasting non-stick performance than the middle coating layer 22, thereby prolonging the service life of the cooking appliance.
Further, the non-stick coating may be a fluorine-containing coating, the non-stick layer 2 further includes a top coating 24, the top coating 24 is coated on a side of the middle coating 22 facing away from the bottom coating 20 to form a non-stick surface of the non-stick layer 2, and the top coating 24 is coated with the fluorine-containing coating. Because the fluorine-containing coating has higher non-stick performance and film forming performance, the non-stick performance of the inorganic non-stick material is slightly inferior to that of the fluorine-containing coating, and the film forming performance is poor; the non-stick layer 2 of the cooking appliance is formed by using the fluorine-containing paint to form the surface coating 24, so that the non-stick effect of the cooking appliance in the initial stage of use can be optimized, and the non-stick layer 2 can form a smooth and flat surface. The non-stick layer 2 is formed with the primer layer 20 and/or the intermediate coating layer 22 by using the above-described paint, and can provide a durable non-stick effect to the cooking appliance. It will be appreciated that the non-stick layer 2 may also not include the topcoat 24, such that the middle coat 22 or the primer layer 20 directly forms the non-stick surface of the non-stick layer 2.
Specifically, in the initial stage of use of the cooking appliance, the top coating 24 plays a role in non-sticking, so that the non-sticking performance of the cooking appliance is optimal; with the increasing use time, after the topcoat 24 wears or falls off to reduce the non-tackiness to a certain extent or completely disappears, the intercoat 22 or the basecoat 20 containing the inorganic non-tacky material is exposed, thereby allowing the inorganic non-tacky material to exert a non-tacky effect and extending the non-tacky life of the non-tacky layer 2.
Further, the thickness of the non-adhesive layer 2 is 30 μm to 45 μm, and illustratively, the thickness of the above-mentioned non-adhesive layer 2 may be selected as follows: 30 μm, 33 μm, 38 μm, 42 μm, 45 μm, etc. Within this thickness range, it is possible to ensure that the non-stick layer 2 completely covers the vessel 1, and to provide the non-stick layer 2 with a good hardness and a high non-stick property, and also to provide the non-stick layer 2 with a good appearance and a good workability.
In particular, the fluorine-containing coating used in the examples of the present application may be of a commonly known type, such as commercially available products, or may be prepared by themselves using methods well known to those skilled in the art. For example, EZ-3700-6901-20A, EZ-3700-9501-20A, EZ-1900-6902-20A, EZ-1900-9501-20A, EZ-1900-6X01-20A, EZ-1900-9502-20A provided by Dain fluorine paint Co, or 465G-83300, 455K-09500, 465G-83270, 456K-09273, 459G-06190, 459K-09190, etc. provided by Komu chemical Co may be used.
One formulation of the fluorine-containing paint can be referred to as follows:
15-50 parts of polytetrafluoroethylene resin (or derivative resin thereof such as PFA), 1-5 parts of pigment, 1-10 parts of filler, 0-10 parts of binder, 1-0 part of auxiliary agent (dispersing agent, emulsifying agent, stabilizing agent, defoaming agent, wetting agent and the like) and 10-30 parts of solvent, wherein the specific types of raw materials such as pigment, filler, binder and the like are not particularly limited, and reference can be made to the prior art.
The construction mode of the paint provided by the embodiment of the application for forming the cooking utensil in the cooking utensil can be referred to as follows:
(a) Dispersing the paint;
(b) Pretreating the vessel;
(c) Spraying a coating;
(d) The composite coating is sintered to form the non-stick layer 2.
Wherein, step (a) comprises mixing non-stick paint, inorganic non-stick material and substance containing reactive group, placing on a dispersing machine for rolling dispersion, and selecting proper dispersion condition according to requirement; for example, the dispersion conditions are 30 to 50rpm for 40min, and then filtered through a 100 to 200 mesh screen.
The step (b) comprises the steps of pre-treating the vessel, and then preheating the vessel after the pre-treatment, wherein the preheating temperature is about 30 ℃.
In the step (c), the base coat layer and the intermediate coat layer are sequentially sprayed or the base coat layer, the intermediate coat layer and the top coat layer are sequentially sprayed as required, the content of the inorganic non-stick material and/or the substance containing the reactive group in the coating used in each layer can be the same or different, in order to further increase the non-stick effect, preferably the content of the inorganic non-stick material and/or the substance containing the reactive group in the coating used in each layer is different, the coating used in each layer can be respectively dispersed, for example, the inorganic non-stick material and the substance containing the reactive group are simultaneously contained in the coating used in the base coat layer, the substance containing the inorganic non-stick material and the substance containing the reactive group are not contained in the coating used in the intermediate coat layer, and the coating used in the top coat layer is a common fluorine-containing coating.
The step (c) specifically comprises: spraying a base coat, uniformly spraying the coating on the surface of a vessel by adopting an air spray gun, wherein the atomization pressure is 0.1-0.4 Mpa, the film thickness is 15-30 mu m, and then drying for 6-12min at 80-120 ℃; spraying a middle coating, uniformly spraying the coating on the surface of a vessel by adopting an air spray gun, wherein the atomization pressure is 0.1-0.4 Mpa, the film thickness is 8-20 mu m, and then drying for 4-8min at 60-80 ℃; the surface coating is sprayed, the air spray gun is adopted to uniformly spray the coating on the surface of the vessel, the atomization pressure is 0.1-0.4 Mpa, and the film thickness is 10-25 mu m.
In the step (d), the cooking utensil sprayed with the coating is placed in a sintering furnace to be sintered under the conditions of 60-100 ℃ for 3-6 min, and then the temperature is increased to 380-450 ℃ to be sintered for 4-8min.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (15)
1. A coating comprising a non-stick coating, characterized in that the coating further comprises an inorganic non-stick material and a reactive group containing substance;
The inorganic non-stick material comprises an inorganic porous material, wherein the inorganic porous material has non-stick performance due to the characteristics of low surface energy and porous oil absorption, the granularity of the inorganic non-stick material is 300-2000 meshes, and the mass ratio of the inorganic non-stick material in the coating is 1-20%;
the inorganic non-stick material comprises a self-lubricating material, wherein the mass ratio of the self-lubricating material in the coating is 1% -10%;
the substance containing the reactive group is one or more of organosilane, adhesion promoter or melamine acrylate.
2. The coating according to claim 1, wherein the mass proportion of the reactive group-containing substance in the coating is 0.5% to 5%.
3. The coating according to claim 1, wherein the mass proportion of the inorganic non-stick material in the coating is 1-15%.
4. A coating according to claim 3, wherein the mass proportion of the self-lubricating material in the inorganic non-stick material is 20% to 50% and the mass proportion of the inorganic porous material is 50% to 80%.
5. The coating of claim 1, wherein the inorganic non-stick material has a particle size of 500 mesh to 1000 mesh.
6. The coating of any one of claims 1-5, wherein the inorganic porous material is any ratio of one or more of diatomaceous earth, bentonite, or zeolite.
7. The coating of any one of claims 1-5, wherein the self-lubricating material is any ratio of one or more of graphite, graphite fluoride, or molybdenum disulfide.
8. The coating of any one of claims 1-5, wherein the reactive group-containing material is a hydroxyl or carboxyl group-containing compound or mixture.
9. Cooking appliance comprising a vessel (1), the surface of the vessel (1) being provided with a non-stick layer (2), the non-stick layer (2) comprising a primer layer (20) applied to the surface of the vessel (1), characterized in that the composition of the primer layer (20) comprises a non-stick coating, an inorganic non-stick material and a substance containing reactive groups;
the inorganic non-stick material comprises an inorganic porous material, wherein the inorganic porous material has non-stick performance due to the characteristics of low surface energy and porous oil absorption, the granularity of the inorganic non-stick material is 300-2000 meshes, and the mass ratio of the inorganic non-stick material in the bottom coating is 1-20%;
The inorganic non-stick material comprises a self-lubricating material, wherein the mass ratio of the self-lubricating material in the coating is 1% -10%;
the substance containing the reactive group is one or more of organosilane, adhesion promoter or melamine acrylate.
10. Cooking appliance according to claim 9, characterized in that the non-stick layer (2) further comprises a middle coating (22), the middle coating (22) being applied to the side of the base coating (20) facing away from the vessel (1), the composition of the middle coating (22) comprising a non-stick coating and an inorganic non-stick material.
11. Cooking appliance according to claim 10, characterized in that the mass proportion of the self-lubricating material in the primer layer (20) is 2% to 5%; and/or
The mass ratio of the self-lubricating material in the intermediate coating (22) is 5% -8%.
12. Cooking appliance according to claim 10, characterized in that the mass proportion of the inorganic porous material in the primer layer (20) is 5% to 15%; and/or
The mass ratio of the inorganic porous material in the middle coating layer (22) is 5-10%.
13. The cooking appliance according to claim 10, wherein the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% to 50%, and the mass ratio of the inorganic porous material is 50% to 80%;
The mass ratio of the inorganic non-stick material in the bottom coating (20) is 5-15%; and/or
The mass ratio of the inorganic porous material in the middle coating layer (22) is 5-10%.
14. The cooking appliance according to claim 10, wherein the non-stick coating is a fluorine-containing coating, the non-stick layer (2) further comprises a top coating (24), the top coating (24) is applied to the side of the middle coating (22) facing away from the bottom coating (20), and the top coating (24) is applied with the fluorine-containing coating.
15. Cooking appliance according to claim 14, the non-stick layer (2) having a thickness of 30-45 μm.
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| CN113171006A (en) * | 2021-04-13 | 2021-07-27 | 杭州九阳小家电有限公司 | Non-stick pan and manufacturing method thereof |
| CN113307494A (en) * | 2021-05-13 | 2021-08-27 | 章益鹏 | Ceramic coating added with porous material and preparation method thereof |
| CN114305120A (en) * | 2021-12-20 | 2022-04-12 | 浙江百特厨具有限公司 | Cooking utensil and preparation method |
| CN114605914A (en) * | 2022-03-29 | 2022-06-10 | 武汉苏泊尔炊具有限公司 | Modified ceramic coating, modified base oil, modified surface oil, composite coating and cooker |
| CN114634724A (en) * | 2022-03-29 | 2022-06-17 | 武汉苏泊尔炊具有限公司 | Modified spray material, non-stick material and cooker |
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