CN110624801A - Wear-resistant non-stick coating, preparation method thereof, pot and cooking equipment - Google Patents
Wear-resistant non-stick coating, preparation method thereof, pot and cooking equipment Download PDFInfo
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- CN110624801A CN110624801A CN201810654085.3A CN201810654085A CN110624801A CN 110624801 A CN110624801 A CN 110624801A CN 201810654085 A CN201810654085 A CN 201810654085A CN 110624801 A CN110624801 A CN 110624801A
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- 238000000576 coating method Methods 0.000 title claims abstract description 54
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000010411 cooking Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 47
- 239000011148 porous material Substances 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 12
- 238000011065 in-situ storage Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000003792 electrolyte Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 4
- 239000004813 Perfluoroalkoxy alkane Substances 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 229910001093 Zr alloy Inorganic materials 0.000 claims description 4
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 4
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 244000068988 Glycine max Species 0.000 claims description 2
- 235000010469 Glycine max Nutrition 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 235000008429 bread Nutrition 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000005524 ceramic coating Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005187 foaming Methods 0.000 description 7
- 230000002087 whitening effect Effects 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000015784 hyperosmotic salinity response Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000005406 washing Methods 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
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Cookers (AREA)
Abstract
The invention relates to the technical field of electric heating appliances, and discloses a wear-resistant non-stick coating, a preparation method thereof, a cooker and cooking equipment, wherein the preparation method comprises the following steps: (1) generating a ceramic film layer with a porous structure on the surface in situ on the surface of the substrate through micro-arc oxidation, wherein the opening size of the pores of the porous structure is smaller than the internal size of the pores; (2) coating organic resin on the surface of the ceramic membrane layer, so that the pores of the porous structure on the surface of the ceramic membrane layer are filled with the organic resin, and curing; (3) and polishing the surface of the ceramic membrane layer to remove the organic resin in the area outside the porous structure. The coating obtained by the method has non-adhesiveness and wear resistance, and simultaneously avoids the pollution to the environment caused by the construction of spraying the oily ceramic coating in the prior art.
Description
Technical Field
The invention relates to the technical field of electric heating appliances, in particular to a wear-resistant non-stick coating, a preparation method thereof, a pot and cooking equipment.
Background
At present, in order to achieve non-stickiness during cooking, domestic and foreign cookers and inner pots are all provided with non-stick coatings on the inner sides of the inner pots. The most commonly used are organic fluororesin coatings and ceramic coatings. However, the coatings have some defects, such as lower hardness of the organic fluorine resin coating, poorer wear resistance, no resistance to shovel and scratch, and easy occurrence of coating falling-off phenomenon; the ceramic non-stick coating has poor weather resistance, the non-stick property is reduced after long-term use, and the oily ceramic coating pollutes the environment during construction. Therefore, the market urgently needs an inner pot coating with non-stick property and wear resistance.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a wear-resistant non-stick coating, a preparation method thereof, a cooker and cooking equipment.
In order to achieve the above object, one aspect of the present invention provides a method for preparing a wear-resistant non-stick coating, wherein the method comprises:
(1) generating a ceramic film layer with a porous structure on the surface in situ on the surface of the substrate through micro-arc oxidation, wherein the opening size of the pores of the porous structure is smaller than the internal size of the pores;
(2) coating organic resin on the surface of the ceramic membrane layer, so that the pores of the porous structure on the surface of the ceramic membrane layer are filled with the organic resin, and curing;
(3) and polishing the surface of the ceramic membrane layer to remove the organic resin in the area outside the porous structure.
In a second aspect, the invention provides a wear-resistant non-stick coating obtained by the above-mentioned preparation method.
The invention provides a cooker, wherein the cooker comprises a base body and a wear-resistant non-stick coating formed on the base body, the wear-resistant non-stick coating comprises a ceramic film layer which is generated on the base body in situ and has a porous structure on the surface, and organic resin filled in pores of the porous structure, and the opening size of the pores is smaller than the internal size of the pores.
A fourth aspect of the invention provides a cooking apparatus, wherein the cooking apparatus comprises the pan of the invention.
The wear-resistant non-stick coating comprises a ceramic film layer with a porous structure on the surface and organic resin filled in holes of the porous structure, wherein the opening size of the holes is smaller than the internal size (namely, the upper part is narrow and the lower part is wide), the organic resin is easy to enter the holes but is difficult to separate, and the bonding force with the ceramic film layer is large after the organic resin is cured, so that the coating has the non-stick property of the organic resin and the wear resistance of the ceramic; and the ceramic film layer is generated in situ on the surface of the substrate, so that the pollution to the environment caused by spraying oily ceramic paint in the prior art is avoided.
Drawings
Fig. 1 is a schematic structural view of the pot of the present invention.
Description of the reference numerals
1 base body 2 ceramic film layer
3 pore 4 organic resin
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The invention provides a preparation method of a wear-resistant non-stick coating, which comprises the following steps:
(1) generating a ceramic film layer with a porous structure on the surface in situ on the surface of the substrate through micro-arc oxidation, wherein the opening size of the pores of the porous structure is smaller than the internal size of the pores;
(2) coating organic resin on the surface of the ceramic membrane layer, so that the pores of the porous structure on the surface of the ceramic membrane layer are filled with the organic resin, and curing;
(3) and polishing the surface of the ceramic membrane layer to remove the organic resin in the area outside the porous structure.
In the present invention, "the opening size of the pores of the porous structure is smaller than the internal size of the pores" means that most of the pores in the porous structure have the characteristic of being narrow at the top and wide at the bottom, that is, the opening size of the pores is smaller than the internal size, and not all the pores have the characteristic of being narrow at the top and wide at the bottom, and the present invention allows a small number of pores having opening sizes larger than or equal to the internal size to exist in the porous structure of the ceramic membrane layer.
In the invention, the substrate is used as an anode, an insoluble metal material (such as stainless steel) is used as a cathode, and micro-arc oxidation is carried out under the micro-arc oxidation condition, so that a ceramic film layer with a porous structure on the surface can be generated on the surface of the substrate in situ, and the opening size of each hole of the porous structure is smaller than the internal size of the hole.
In the invention, the shape of the hole on the surface of the ceramic film layer formed by micro-arc oxidation can be a water drop type, a conical longitudinal section or a trapezoid longitudinal section.
In the present invention, the shape and size of the holes and the thickness of the ceramic film layer can be controlled by adjusting the micro-arc oxidation conditions, preferably, the micro-arc oxidation conditions include: the current density is 0.2-10A/dm3The temperature is 20-60 deg.C, and the time is 30-120 min.
In the invention, the electrolyte of the micro-arc oxidation process is preferably weakly alkaline, and preferably, the electrolyte in the electrolyte is at least one of carbonate, phosphate and silicate; further preferably, the electrolyte is used in an amount such that the pH of the electrolyte is 8 to 13.
In the invention, the substrate may be a substrate material which can generate a ceramic film layer with a porous structure on the surface in situ through micro-arc oxidation, and the opening size of each hole of the porous structure is smaller than the internal size of the hole, and preferably, the substrate is at least one of aluminum, aluminum alloy, titanium alloy, magnesium alloy, zirconium and zirconium alloy.
In the present invention, the organic resin may be an organic resin having non-tackiness as used as a coating material, which is currently available in the art, and preferably, the organic resin is at least one of PEEK, PTFE, and PFA.
In the present invention, in the step (2), the curing temperature is not particularly limited as long as the organic resin in the pores can be cured, and the curing is usually a high-temperature curing, for example, the curing temperature may be 370 to 420 ℃.
In the present invention, in step (3), the polishing may be carried out by a surface polishing method which is conventional in the art as long as the organic resin other than the porous structure can be removed without destroying the organic resin in the pores, and for example, the polishing may be mechanical polishing. Preferably, after polishing, the pore openings of the ceramic membrane layer are flush with the organic resin in the pores.
In a second aspect, the invention provides a wear-resistant non-stick coating obtained by the preparation method. The wear-resistant non-stick coating comprises a ceramic film layer with a porous structure on the surface and organic resin filled in holes of the porous structure, wherein the opening size of the holes is smaller than the internal size of the holes, the organic resin is easy to enter the holes but not easy to separate, and the bonding force with the ceramic film layer is large after the organic resin is cured, so that the coating has the non-stick property of the organic resin and the wear resistance of the ceramic.
In a third aspect, the invention provides a cookware, as shown in fig. 1, the cookware comprises a base 1 and a wear-resistant non-stick coating formed on the base 1, wherein the wear-resistant non-stick coating comprises a ceramic film layer 2 which is generated in situ on the base 1 and has a porous structure on the surface, and an organic resin 4 filled in pores 3 of the porous structure, and the opening size of the pores 3 is smaller than the internal size of the pores.
Preferably, the wear-resistant non-stick coating is the wear-resistant non-stick coating of the present invention.
In the present invention, the substrate 1 may be a substrate material capable of in-situ forming a ceramic membrane layer having a porous structure on a surface thereof, and an opening size of each pore of the porous structure is smaller than an inner size of the pore, and preferably, the substrate 1 is at least one of aluminum, an aluminum alloy, titanium, a titanium alloy, magnesium, a magnesium alloy, zirconium, and a zirconium alloy.
In the present invention, the thickness of the substrate 1 may be selected conventionally in the art, for example, the thickness of the substrate 1 is 0.5 to 5 mm.
In the present invention, the organic resin 4 may be an organic resin having non-tackiness as a coating material existing in the art, and preferably, the organic resin 4 is at least one of PEEK, PTFE, and PFA.
In the invention, in order to further improve the wear resistance and non-stick property of the wear-resistant non-stick coating, the thickness of the ceramic film layer 2 is preferably 10-50 micrometers.
In the present invention, the opening size of the hole 3 is smaller than the inner size of the hole, and the shape of the hole 3 may be a water drop shape, a tapered shape in longitudinal section, or a trapezoidal shape in longitudinal section.
In order to increase the bonding force between the organic resin in the pores and the ceramic film layer and improve the wear resistance and non-stick property of the coating, the maximum pore diameter of the pores 3 is preferably 5 to 15 micrometers.
A fourth aspect of the invention provides a cooking apparatus, wherein the cooking apparatus comprises the pan of the invention.
In the invention, preferably, the cooking device is a wok, a frying pan, an air fryer, a frying and baking machine, a bread machine, an electric cooker, an electric pressure cooker or a soybean milk machine.
The present invention will be described in detail below by way of examples.
Example 1
Using aluminum pot matrix (thickness of 0.7mm) as anode, stainless steel (type 304 stainless steel) as cathode, sodium silicate as electrolyte, pH of the electrolyte is 8, and current density is 5A/dm3Micro-arc oxidation at 20 DEG C60min, in-situ generating a 30-40 micron ceramic film layer with a porous structure on the surface of the aluminum matrix, wherein the pores of the porous structure are in a water drop shape, and the maximum pore diameter of the pores is 5-15 microns; coating organic resin PFA on the surface of the ceramic film layer to fill holes on the surface of the ceramic film layer with PFA, and curing at 400-410 ℃; and polishing the surface of the ceramic membrane layer by mechanical polishing to remove the organic resin in the area outside the porous structure. Namely, the wear-resistant non-stick coating is obtained on the aluminum matrix.
Comparative example 1
A wear-resistant non-stick coating was prepared as in example 1, except that after the ceramic film layer was formed on the substrate, no organic resin was applied to the surface of the ceramic film layer, i.e., the pores on the surface of the ceramic film layer were not filled with organic resin.
Comparative example 2
The surface of the aluminum substrate of example 1 was directly coated with an organic resin PFA layer and cured.
Test examples
1. Coating binding force: the coating cohesion is determined according to G98642-88. The results are shown in Table 1.
2. Scratch resistance of the coating: washing water with the concentration of 5 weight percent and 3M (7447C) scouring pad with the load of 2.5kgf are prepared by using the scouring liquid, the left-right swinging is carried out for 1 time, the scouring pad is replaced every 250 times, whether the coating falls off or the base material is exposed after each scraping is checked (the test is ended by exposing more than or equal to 10 lines), and the abrasion resistance times are recorded. The results are shown in Table 1.
3. Acid, alkali and salt resistance:
acid resistance: adding an acetic acid solution with the concentration of 5 weight percent into the inner pot until the position of the maximum scale water level of the inner wall of the inner pot, putting the inner pot into the corresponding pot, continuously heating and boiling (keeping the boiling state) for 10 minutes by electrifying the closing cover, then preserving heat and soaking for 24 hours at 100 ℃, cleaning the inner pot after the test is finished, and visually checking the change condition of the surface of the coating, wherein the result is shown in table 2.
Alkali resistance: adding 0.5 wt% sodium hydroxide solution into the inner pot until the inner wall of the inner pot reaches the maximum scale water level, putting the inner pot into the corresponding pot, continuously heating and boiling (keeping the boiling state) for 10 minutes by electrifying the closing cover, then preserving heat and soaking for 24 hours at 100 ℃, cleaning the inner pot after the test is finished, and visually checking the change condition of the coating surface, wherein the result is shown in table 2.
Salt tolerance: adding a sodium chloride solution with the concentration of 5 weight percent into the inner pot until the position of the maximum scale water level of the inner wall of the inner pot, putting the inner pot into a corresponding pot, electrifying and closing the cover, continuously heating and boiling for 8 hours (replenishing water for 1 time every 2 hours, keeping the liquid level at the position of the beginning of the test), keeping the temperature at 80 ℃ for 16 hours to form a period, visually checking the change condition of the surface of the coating after the test of each period, and recording the period number of the coating with the undesirable phenomena of foaming, salient points and the like, wherein the results are shown in Table 2.
4. Durability of cooking: continuously cooking rice, recording as 1 time to complete the set program, and forming inner pot coating with 1 area larger than 1mm2Or more than 11 points appear with an area less than 1mm2The point of (a) is marked as failure. The results are shown in Table 2.
TABLE 1
| Binding force (MPa) | Number of wear-resisting times of plate | |
| Example 1 | 50 | 16000 |
| Comparative example 2 | 38 | 7000 |
TABLE 2
| Acid resistance | Alkali resistance | Salt tolerance | Durability of cooking | |
| Example 1 | No whitening and foaming | No whitening and foaming | 23 weeks | 10000 |
| Comparative example 1 | No whitening and foaming | No whitening and foaming | 23 weeks | 8000 |
| Comparative example 2 | No whitening and foaming | No whitening and foaming | For 20 weeks | 7000 |
As can be seen from the results in tables 1 and 2, the coating obtained by the preparation method of the invention has good non-stick property and wear resistance.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (11)
1. A preparation method of a wear-resistant non-stick coating is characterized by comprising the following steps:
(1) generating a ceramic film layer with a porous structure on the surface in situ on the surface of the substrate through micro-arc oxidation, wherein the opening size of the pores of the porous structure is smaller than the internal size of the pores;
(2) coating organic resin on the surface of the ceramic membrane layer, so that the pores of the porous structure on the surface of the ceramic membrane layer are filled with the organic resin, and curing;
(3) and polishing the surface of the ceramic membrane layer to remove the organic resin in the area outside the porous structure.
2. The method of claim 1, wherein the conditions of the micro-arc oxidation comprise: the current density is 0.2-10A/dm3The temperature is 20-60 deg.C, and the time is 30-120 min.
3. The method of claim 2, wherein the electrolyte in the electrolyte is at least one of a carbonate, a phosphate, and a silicate;
preferably, the electrolyte is used in an amount such that the pH of the electrolyte is 8 to 13.
4. The method of any of claims 1-3, wherein the substrate is at least one of aluminum, an aluminum alloy, titanium, a titanium alloy, magnesium, a magnesium alloy, zirconium, and a zirconium alloy.
5. The method of any one of claims 1-3, wherein the organic resin is at least one of PEEK, PTFE, and PFA.
6. The method of claim 1, wherein after polishing, the pore openings of the ceramic membrane layer are flush with the organic resin in the pores.
7. Wear resistant non-stick coating obtainable by the method according to any of claims 1 to 6.
8. A pot characterized by comprising a base (1) and a wear-resistant non-stick coating formed on the base (1), the wear-resistant non-stick coating comprising a ceramic film layer (2) having a porous structure on the surface thereof and an organic resin (4) filled in pores (3) of the porous structure, the pores (3) having an opening size smaller than the inner size of the pores (3);
preferably, said wear resistant non-stick coating is the wear resistant non-stick coating of claim 7.
9. The cookware according to claim 8, wherein the thickness of the ceramic membrane layer (2) is 10-50 microns;
further preferably, the maximum pore size of the pores (3) is 5-15 microns;
preferably, the shape of the holes (3) is drop-shaped, tapered in longitudinal section or trapezoidal in longitudinal section.
10. The cookware according to claim 8 or 9, wherein said base (1) is at least one of aluminium, aluminium alloy, titanium alloy, magnesium alloy, zirconium and zirconium alloy;
preferably, the organic resin (4) is at least one of PEEK, PTFE, and PFA.
11. A cooking appliance, characterized in that it comprises a pot according to any of claims 8-10;
preferably, the cooking device is a wok, a frying pan, an air fryer, a frying and baking machine, a bread maker, an electric cooker, an electric pressure cooker or a soybean milk maker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654085.3A CN110624801A (en) | 2018-06-22 | 2018-06-22 | Wear-resistant non-stick coating, preparation method thereof, pot and cooking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654085.3A CN110624801A (en) | 2018-06-22 | 2018-06-22 | Wear-resistant non-stick coating, preparation method thereof, pot and cooking equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110624801A true CN110624801A (en) | 2019-12-31 |
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| CN201810654085.3A Pending CN110624801A (en) | 2018-06-22 | 2018-06-22 | Wear-resistant non-stick coating, preparation method thereof, pot and cooking equipment |
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| CN (1) | CN110624801A (en) |
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| CN111334834A (en) * | 2020-03-11 | 2020-06-26 | 梁世花 | Method for making oleophylic non-stick cooking utensils |
| CN112376102A (en) * | 2020-11-07 | 2021-02-19 | 江苏美玛技术有限公司 | Preparation method of high-performance cutter coating material |
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