CN219374417U - Cooking utensil - Google Patents
Cooking utensil Download PDFInfo
- Publication number
- CN219374417U CN219374417U CN202320551151.0U CN202320551151U CN219374417U CN 219374417 U CN219374417 U CN 219374417U CN 202320551151 U CN202320551151 U CN 202320551151U CN 219374417 U CN219374417 U CN 219374417U
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- China
- Prior art keywords
- stick film
- polytetrafluoroethylene
- polytetrafluoroethylene non
- stick
- film
- Prior art date
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- 238000010411 cooking Methods 0.000 title claims abstract description 52
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 129
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 129
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 128
- 239000010410 layer Substances 0.000 claims abstract description 71
- 229910001593 boehmite Inorganic materials 0.000 claims abstract description 39
- 238000012986 modification Methods 0.000 claims abstract description 39
- 230000004048 modification Effects 0.000 claims abstract description 39
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000012790 adhesive layer Substances 0.000 claims abstract description 17
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 5
- 238000003851 corona treatment Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 26
- 239000002313 adhesive film Substances 0.000 description 15
- 238000002360 preparation method Methods 0.000 description 12
- 238000001020 plasma etching Methods 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 4
- 238000003490 calendering Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000010794 food waste Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 241000467686 Eschscholzia lobbii Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Cookers (AREA)
Abstract
The application relates to the technical field of cookers, in particular to a cooking utensil, which comprises a pot body and a polytetrafluoroethylene non-stick film arranged on at least part of the surface of the pot body; wherein, at least part of the inner surface of the pan body is provided with a boehmite binding layer, at least part of the surface of the polytetrafluoroethylene non-stick film is provided with a surface modification layer, and the pan body and the polytetrafluoroethylene non-stick film are connected with the surface modification layer in a matched manner through the boehmite binding layer. According to the cooking utensil, the boehmite adhesive layer is arranged on the inner surface of the pot body, and the surface modification layer is arranged on the surface of the polytetrafluoroethylene non-stick film, so that the pot body and the polytetrafluoroethylene non-stick film are connected with the surface modification layer in a matched manner through the boehmite adhesive layer, and the bonding strength of the pot body and the polytetrafluoroethylene non-stick film is high; and the polytetrafluoroethylene non-stick film has the characteristics of high temperature resistance, low temperature resistance, good mechanical toughness, corrosion resistance and extremely small surface tension, and the non-stick life of the cooking utensil is longer while the good non-stick effect of the cooking utensil is realized.
Description
[ field of technology ]
The application relates to the technical field of cookers, in particular to a cooking appliance.
[ background Art ]
In the traditional cooker industry, in order to realize non-tackiness of food, non-tackiness chemical paint which takes fluorocarbon resin and siloxane sol polycondensate as raw materials is sprayed on the surface of a pot body by adopting an atomization spraying and high-temperature curing process to form a non-tackiness film, but the non-tackiness film prepared by the atomization spraying and high-temperature curing process has the defects of uneven thickness, low bonding strength, incapacity of reaching required performances and the like. Therefore, finding a non-stick film which can replace the fluorocarbon resin and siloxane sol polycondensate as raw materials becomes a technical problem in the industry.
[ utility model ]
In view of this, this application provides a cooking utensil, and cooking utensil is equipped with the polytetrafluoroethylene non-stick film that performance is good and with the pot body bonding strength is high, has guaranteed cooking utensil's non-stick effect.
In a first aspect, the present application provides a cooking appliance comprising a pan and a polytetrafluoroethylene non-stick film disposed on at least a portion of a surface of the pan; wherein, at least part of the inner surface of the pot body is provided with a boehmite bonding layer, at least part of the surface of the polytetrafluoroethylene non-stick film is provided with a surface modification layer, and the pot body and the polytetrafluoroethylene non-stick film are connected with the surface modification layer in a matched manner through the boehmite bonding layer.
With reference to the first aspect, the thickness of the polytetrafluoroethylene non-adhesive film is 50 μm to 100 μm.
In the scheme, if the thickness of the polytetrafluoroethylene non-stick film is too thick, the preparation cost of the polytetrafluoroethylene non-stick film is increased; if the thickness of the polytetrafluoroethylene non-stick film is too thin, the abrasion resistance of the polytetrafluoroethylene non-stick film is low, and the coating of the cooking utensil is easily damaged in the use process, so that the service life of the cooking utensil is influenced.
With reference to the first aspect, the pore diameter of the polytetrafluoroethylene non-adhesive film is less than or equal to 3 μm.
In the scheme, if the pore diameter of the polytetrafluoroethylene non-stick film is too large, food residues easily permeate into the film layer in the using process of the cooking utensil, so that the pollution resistance and corrosion resistance of the polytetrafluoroethylene non-stick film are reduced.
With reference to the first aspect, the surface tension of the polytetrafluoroethylene non-adhesive film is 20 mN/m-45 mN/m.
In the scheme, if the surface tension of the polytetrafluoroethylene non-stick film is too large, the non-stick effect is poor; if the surface tension of the polytetrafluoroethylene non-stick film is too small, the polytetrafluoroethylene non-stick film is difficult to combine with the pot body 1 of the cooking utensil, and the polytetrafluoroethylene non-stick film falls off randomly in the using process of the cooking utensil.
With reference to the first aspect, the tensile strength of the polytetrafluoroethylene non-adhesive film is 25N/mm 2 ～35N/mm 2 。
In the scheme, if the tensile strength of the polytetrafluoroethylene non-stick film is too high, namely the hardness of the polytetrafluoroethylene non-stick film is too high, the polytetrafluoroethylene non-stick film is difficult to stretch in the preparation process; if the tensile strength of the polytetrafluoroethylene non-stick film is too small, namely the flexibility of the polytetrafluoroethylene non-stick film is too large, the polytetrafluoroethylene non-stick film is easy to deform in the use process, and the use of the cooking utensil is affected.
With reference to the first aspect, the elongation at break of the polytetrafluoroethylene non-adhesive film is 150% -300%.
In the scheme, if the breaking elongation of the polytetrafluoroethylene non-stick film is too large and the plasticity is too large, the polytetrafluoroethylene non-stick film is easy to deform in the use process, and the use of the cooking utensil is affected; if the breaking elongation of the polytetrafluoroethylene non-stick film is too small, the material is difficult to stretch and prolong, and is easy to break in the preparation process, so that the preparation yield of the polytetrafluoroethylene non-stick film is affected.
With reference to the first aspect, the hardness of the polytetrafluoroethylene non-adhesive film is 60-80 HA.
In the scheme, if the hardness of the polytetrafluoroethylene non-stick film is too high, the brittleness can be increased, which is not beneficial to the subsequent processing process; if the hardness of the polytetrafluoroethylene non-stick film is too small, the polytetrafluoroethylene non-stick film is easy to collide and damage in the use process, and the use experience is affected.
With reference to the first aspect, the surface modification layer is a plasma etching modification layer, a chemical corrosion modification layer, or a corona treatment modification layer.
In the scheme, plasma etching and/or chemical corrosion and/or corona are/is carried out on at least part of the surface of the polytetrafluoroethylene non-stick film, so that the polytetrafluoroethylene non-stick film with the surface modification layer is obtained, namely the surface modification layer is a plasma etching modification layer, a chemical corrosion modification layer or a corona treatment modification layer, and the surface modification layer can improve the surface tension of the polytetrafluoroethylene non-stick film. It can be understood that the binding force between the pot body and the polytetrafluoroethylene non-stick film is improved through the boehmite layer and the surface modification layer, the polytetrafluoroethylene non-stick film is prevented from falling off in the use process, and the service life of the cooking utensil is prolonged.
With reference to the first aspect, the boehmite adhesive layer has a surface tension of 45mN/m to 96mN/m.
In the scheme, if the surface tension of the boehmite binding layer is too large, the preparation cost is increased; if the surface tension of the boehmite adhesive layer is too small, the combination of the boehmite adhesive layer and the pot body of the polytetrafluoroethylene non-stick film is difficult, and the polytetrafluoroethylene non-stick film is easy to fall off in the use process of the cooking utensil.
In combination with the first aspect, the combination strength of the polytetrafluoroethylene non-adhesive film and the boehmite adhesive layer is 2.5MPa to 4MPa.
In the scheme, if the bonding strength of the polytetrafluoroethylene non-stick film and the boehmite bonding layer is too high, the preparation cost of the cooking utensil is increased; the bonding strength of the polytetrafluoroethylene non-stick film and the boehmite bonding layer is too small, and the polytetrafluoroethylene non-stick film is easy to fall off in the use process of the cooking utensil, so that the heating non-stick effect of the cooking utensil is affected.
After adopting above-mentioned technical scheme, beneficial effect is:
according to the cooking utensil, the boehmite adhesive layer is arranged on the inner surface of the pot body, and the surface modification layer is arranged on the surface of the polytetrafluoroethylene non-adhesive film, so that the pot body and the polytetrafluoroethylene non-adhesive film are connected with the surface modification layer in a matched manner through the boehmite adhesive layer, and the bonding strength of the pot body and the polytetrafluoroethylene non-adhesive film is higher; in addition, the polytetrafluoroethylene non-stick film can be formed by calendaring, has the characteristics of uniform thickness, high temperature resistance, low temperature resistance, good mechanical toughness, corrosion resistance and extremely small surface tension, and has longer non-stick life when ensuring that the cooking utensil realizes good non-stick effect.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a cooking appliance provided by the present application.
Reference numerals:
1-a pot body; 2-a rough layer; a 3-boehmite binding layer; 4-a surface modification layer; 5-polytetrafluoroethylene non-stick film.
[ detailed description ] of the utility model
For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the traditional cooker industry, in order to realize non-tackiness of food, non-tackiness chemical paint which takes fluorocarbon resin and siloxane sol polycondensate as raw materials is sprayed on the surface of a pot body by adopting an atomization spraying and high-temperature curing process to form a non-tackiness film, but the non-tackiness film prepared by the atomization spraying and high-temperature curing process has the defects of uneven thickness, low bonding strength, incapacity of reaching required performances and the like. Therefore, finding a non-stick film which can replace the fluorocarbon resin and siloxane sol polycondensate as raw materials becomes a technical problem in the industry.
In view of this, the present application provides a cooking appliance including a pan body 1 and a polytetrafluoroethylene non-stick film 5 provided on at least part of the surface of the pan body 1; wherein, at least part of the inner surface of the pan body 1 is provided with a boehmite adhesive layer 3, at least part of the surface of the polytetrafluoroethylene non-stick film 5 is provided with a surface modification layer 4, and the pan body 1 and the polytetrafluoroethylene non-stick film 5 are connected with the surface modification layer 4 through the cooperation of the boehmite adhesive layer 3.
In the scheme, the boehmite adhesive layer 3 is arranged on the inner surface of the pot body 1, the surface modification layer 4 is arranged on the surface of the polytetrafluoroethylene non-adhesive film 5, so that the pot body 1 and the polytetrafluoroethylene non-adhesive film 5 are connected with the surface modification layer 4 in a matched manner through the boehmite adhesive layer 3, and the bonding strength of the pot body 1 and the polytetrafluoroethylene non-adhesive film 5 is higher; in addition, the polytetrafluoroethylene non-stick film 5 can be formed by calendaring, has the characteristics of uniform thickness, high temperature resistance, low temperature resistance, good mechanical toughness, corrosion resistance and extremely small surface tension, and has longer non-stick life when ensuring that the cooking utensil realizes good non-stick effect.
In some embodiments, the pot body 1 used in the application may be a single metal pot body 1 or a composite metal pot body 1, that is, the pot body 1 may be a titanium metal pot body 1, a copper metal pot body 1, a magnesium metal pot body 1, an aluminum metal pot body 1 or a low carbon steel pot body 1, or may be a composite pot body 1 including a titanium surface layer and a copper bottom layer; or, a composite pot body 1 comprising a low-carbon steel bottom layer and a titanium surface layer; or a composite pot body 1 comprising a low-carbon steel bottom layer, a copper middle layer and a titanium surface layer. Further, the pan body 1 may be applied to cooking appliances with different purposes, such as woks, soup pans, milk pans, frying pans, etc., and the material and purpose of the pan body 1 may be selected according to actual needs, which is not limited herein.
In some embodiments, the composition of the polytetrafluoroethylene non-stick film 5 arranged on the inner surface of the pot body 1 is a high molecular compound formed by polymerizing tetrafluoroethylene, and the polytetrafluoroethylene has the following excellent physical properties: high temperature resistance, and the working temperature can reach 250 ℃; low temperature resistance and good mechanical toughness, and can keep 5% elongation even if the temperature is reduced to-196 ℃; corrosion resistance, inert to most chemicals and solvents, strong acid and alkali resistance, water resistance and various organic solvents; high lubrication and extremely low friction coefficient. The adhesive is not adhered, has extremely small surface tension and is good in non-adhesion; is nontoxic, physiologically inert and has no adverse reaction when entering human body. It can be appreciated that the polytetrafluoroethylene is adopted as the main material, so that the polytetrafluoroethylene non-stick film 5 has excellent chemical stability and corrosion resistance; and moreover, the non-stick film prepared by polytetrafluoroethylene can be formed by a calendaring process, and the non-stick film prepared by the calendaring process is uniform in thickness and better in non-stick durability.
The thickness of the polytetrafluoroethylene non-stick film 5 used in the present application is 50 μm to 100. Mu.m, and the polytetrafluoroethylene non-stick film 5 may be, for example, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, or the like, or may be any other value within a range, and may be selected according to actual needs, and is not limited thereto. If the thickness of the polytetrafluoroethylene non-stick film 5 is too thick, the preparation cost of the polytetrafluoroethylene non-stick film 5 is increased; if the thickness of the polytetrafluoroethylene non-stick film 5 is too thin, the abrasion resistance of the polytetrafluoroethylene non-stick film 5 is low, and the coating of the cooking utensil is easily damaged in the use process, so that the service life of the cooking utensil is influenced.
The pore diameter of the polytetrafluoroethylene non-stick film 5 is not more than 3. Mu.m, and may be any value within a range, and may be selected according to actual needs, and is not limited herein. If the pore diameter of the polytetrafluoroethylene non-stick film 5 is too large, food residues easily permeate into the film layer in the using process of the cooking utensil, so that the pollution resistance and corrosion resistance of the polytetrafluoroethylene non-stick film 5 are reduced.
The surface tension of the polytetrafluoroethylene non-stick film 5 is 20mN/m to 45mN/m, and optionally, the surface tension of the polytetrafluoroethylene non-stick film 5 may be specifically 20mN/m, 25mN/m, 30mN/m, 35mN/m, 40mN/m, 45mN/m, or the like, or may be other values within a range, and may be selected according to actual needs, and is not limited herein. If the surface tension of the polytetrafluoroethylene non-stick film 5 is too high, the non-stick effect is deteriorated; if the surface tension of the polytetrafluoroethylene non-stick film 5 is too small, the polytetrafluoroethylene non-stick film 5 is difficult to combine with the pot body 1 of the cooking utensil, and the polytetrafluoroethylene non-stick film 5 falls off arbitrarily in the using process of the cooking utensil.
The tensile strength of the polytetrafluoroethylene non-stick film 5 is 25N/mm2 to 35N/mm2, and the tensile strength of the polytetrafluoroethylene non-stick film 5 may be 25N/mm2, 27N/mm2, 29N/mm2, 31N/mm2, 33N/mm2, 35N/mm2, or the like, or may be any other value within a range, and may be selected according to actual needs, and is not limited herein. If the tensile strength of the polytetrafluoroethylene non-stick film 5 is too high, namely the hardness of the polytetrafluoroethylene non-stick film 5 is too high, the polytetrafluoroethylene non-stick film 5 is difficult to stretch in the preparation process; if the tensile strength of the polytetrafluoroethylene non-stick film 5 is too small, namely the flexibility of the polytetrafluoroethylene non-stick film 5 is too large, the polytetrafluoroethylene non-stick film 5 is easy to deform in the use process, and the use of the cooking utensil is affected.
The elongation at break of the polytetrafluoroethylene non-stick film 5 is 150% to 300%, and the elongation at break of the polytetrafluoroethylene non-stick film 5 may be, in particular, 150%, 170%, 190%, 210%, 230%, 250%, 270%, 290%, 300%, or the like, or may be any other value within a range, and may be selected according to actual needs, and is not limited herein. If the breaking elongation of the polytetrafluoroethylene non-stick film 5 is too large and the plasticity is too large, the polytetrafluoroethylene non-stick film 5 is easy to deform in the using process, and the using of the cooking utensil is affected; if the elongation at break of the polytetrafluoroethylene non-stick film 5 is too small, the material is difficult to stretch and lengthen, and is easy to break in the preparation process, so that the preparation yield of the polytetrafluoroethylene non-stick film 5 is affected.
The hardness of the polytetrafluoroethylene non-stick film 5 is 60HA to 80HA, and alternatively, the hardness of the polytetrafluoroethylene non-stick film 5 may be specifically 60HA, 64HA, 68HA, 70HA, 75HA, 80HA, or the like, or may be any other value within a range, and may be selected according to actual needs, and is not limited herein. If the hardness of the polytetrafluoroethylene non-stick film 5 is too high, the brittleness can be increased, which is not beneficial to the subsequent processing process; if the hardness of the polytetrafluoroethylene non-stick film 5 is too small, the polytetrafluoroethylene non-stick film is easy to collide and damage in the use process, and the use experience is affected.
The polytetrafluoroethylene non-stick film 5 with the excellent physical properties can be used as a non-stick functional layer of the pot body 1, namely, the polytetrafluoroethylene non-stick film 5 and the pot body 1 are stuck and covered, and then the cooking utensil with the non-stick coating is obtained.
Before the polytetrafluoroethylene non-stick film 5 is stuck, a boehmite layer is formed on the surface of the pot body 1 and a surface modification layer 4 is formed on the contact surface between the polytetrafluoroethylene non-stick film 5 and the pot body 1 in order to improve the adhesion between the two.
The boehmite layer is formed by the following steps:
the surface of the pot body 1 is roughened in advance to form the roughened layer 2 by one or more of conventional processes including, but not limited to, sand blasting, shot blasting, sand blasting, etching, embossing, and the like.
Immersing the roughened pot body 1 into pure water for hydrothermal treatment, wherein a boehmite layer is formed on a part of the roughened layer 2; wherein the temperature of the pure water is 80-95 ℃, the conductivity is less than 2 mu s/cm, and the silicon content is less than 100ppb. The surface tension of the pot body 1 can be increased by the boehmite layer, wherein the surface tension of the boehmite adhesive layer 3 is 45mN/m to 96mN/m, alternatively, the surface tension of the boehmite adhesive layer 3 can be specifically 45mN/m, 50mN/m, 55mN/m, 60mN/m, 65mN/m, 70mN/m, 75mN/m, 80mN/m, 85mN/m, 90mN/m, 96mN/m, etc., and can be other values in the range, and can be selected according to actual needs without limitation. If the surface tension of the boehmite binding layer 3 is too high, the preparation cost is increased; if the surface tension of the boehmite adhesive layer 3 is too small, the bonding between the boehmite adhesive layer 3 and the pot body 1 of the polytetrafluoroethylene non-stick film 5 is difficult, and the polytetrafluoroethylene non-stick film 5 is easily detached during the use of the cooking utensil.
At the same time, plasma etching and/or chemical etching and/or corona are performed on at least part of the surface of the polytetrafluoroethylene non-stick film 5 to obtain the polytetrafluoroethylene non-stick film 5 with the surface modification layer 4, namely, the surface modification layer 4 is a plasma etching modification layer, a chemical etching modification layer or a corona treatment modification layer, and the surface modification layer 4 can improve the surface tension of the polytetrafluoroethylene non-stick film 5. It can be understood that the binding force between the pot body 1 and the polytetrafluoroethylene non-stick film 5 is improved through the boehmite layer and the surface modification layer 4, the polytetrafluoroethylene non-stick film 5 is prevented from falling off in the using process, and the service life of the cooking utensil is prolonged.
Finally, the pan body 1 subjected to Bohmer treatment and the polytetrafluoroethylene non-stick film 5 subjected to plasma etching and the like are combined together through a mechanical hot pressing technology, so that the high lasting non-stick property of the film is ensured, the bonding strength of the film layer is realized, the technical problem of contradiction between hydrophobicity and hydrophilicity is solved, and the functional film layer meeting the requirements of cookers or household appliances is achieved. The bonding strength between the polytetrafluoroethylene non-adhesive film 5 and the boehmite bonding layer 3 is 2.5MPa to 4.0MPa, and the bonding strength between the polytetrafluoroethylene non-adhesive film 5 and the boehmite bonding layer 3 may be specifically 2.5MPa, 3.0MPa, 3.4MPa, 3.8MPa, 4.0MPa, or the like, or may be any other value within a range, and may be selected according to actual needs, and is not limited herein. If the bonding strength of the polytetrafluoroethylene non-stick film 5 and the boehmite bonding layer 3 is too high, the preparation cost of the cooking utensil is increased; the bonding strength of the polytetrafluoroethylene non-stick film 5 and the boehmite bonding layer 3 is too small, and the polytetrafluoroethylene non-stick film 5 is easy to fall off in the using process of the cooking utensil, so that the heating non-stick effect of the cooking utensil is affected.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present application, and are not limiting. Although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some or all of the technical features may be equivalently replaced. Such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The cooking appliance is characterized by comprising a pot body and a polytetrafluoroethylene non-stick film arranged on at least part of the surface of the pot body; wherein, at least part of the inner surface of the pot body is provided with a boehmite bonding layer, at least part of the surface of the polytetrafluoroethylene non-stick film is provided with a surface modification layer, and the pot body and the polytetrafluoroethylene non-stick film are connected with the surface modification layer in a matched manner through the boehmite bonding layer.
2. The cooking appliance according to claim 1, wherein the polytetrafluoroethylene non-stick film has a thickness of 50 μm to 100 μm.
3. The cooking device of claim 1, wherein the polytetrafluoroethylene non-stick film has a pore size of 3 μm or less.
4. Cooking appliance according to claim 1, characterized in that the polytetrafluoroethylene non-stick film has a surface tension of 20-45 mN/m.
5. The cooking appliance of claim 1, wherein the polytetrafluoroethylene non-stick film has a tensile strength of 25N/mm 2 ～35N/mm 2 。
6. The cooking appliance of claim 1, wherein the polytetrafluoroethylene non-stick film has an elongation at break of 150% to 300%.
7. The cooking appliance of claim 1, wherein the polytetrafluoroethylene non-stick film HAs a hardness of 60HA to 80HA.
8. The cooking appliance of claim 1, wherein the surface modification layer is a plasma etch modification layer, a chemical corrosion modification layer, or a corona treatment modification layer.
9. Cooking appliance according to claim 1, characterized in that the surface tension of the boehmite adhesive layer is 45-96 mN/m.
10. The cooking appliance of claim 1, wherein the polytetrafluoroethylene non-stick film has a bonding strength with the boehmite bonding layer of 2.5MPa to 4MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551151.0U CN219374417U (en) | 2023-03-15 | 2023-03-15 | Cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551151.0U CN219374417U (en) | 2023-03-15 | 2023-03-15 | Cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219374417U true CN219374417U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320551151.0U Active CN219374417U (en) | 2023-03-15 | 2023-03-15 | Cooking utensil |
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| Country | Link |
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| CN (1) | CN219374417U (en) |
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