CN115399629B - Non-stick cooker and preparation method thereof - Google Patents
Non-stick cooker and preparation method thereof Download PDFInfo
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- CN115399629B CN115399629B CN202211193715.4A CN202211193715A CN115399629B CN 115399629 B CN115399629 B CN 115399629B CN 202211193715 A CN202211193715 A CN 202211193715A CN 115399629 B CN115399629 B CN 115399629B
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- 238000002360 preparation method Methods 0.000 title description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000004519 grease Substances 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 25
- 230000007704 transition Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 10
- 229910001919 chlorite Inorganic materials 0.000 claims description 6
- 229910052619 chlorite group Inorganic materials 0.000 claims description 6
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052622 kaolinite Inorganic materials 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 240000006365 Vitis vinifera Species 0.000 claims description 5
- 235000014787 Vitis vinifera Nutrition 0.000 claims description 5
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 5
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052626 biotite Inorganic materials 0.000 claims description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 5
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052631 glauconite Inorganic materials 0.000 claims description 5
- 229910052900 illite Inorganic materials 0.000 claims description 5
- WKPSFPXMYGFAQW-UHFFFAOYSA-N iron;hydrate Chemical compound O.[Fe] WKPSFPXMYGFAQW-UHFFFAOYSA-N 0.000 claims description 5
- 229910052629 lepidolite Inorganic materials 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- 229910052627 muscovite Inorganic materials 0.000 claims description 5
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 5
- 229910052670 petalite Inorganic materials 0.000 claims description 5
- 229910052628 phlogopite Inorganic materials 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 229910052903 pyrophyllite Inorganic materials 0.000 claims description 5
- 229910052623 talc Inorganic materials 0.000 claims description 5
- 239000000454 talc Substances 0.000 claims description 5
- 229910052902 vermiculite Inorganic materials 0.000 claims description 5
- 239000010455 vermiculite Substances 0.000 claims description 5
- 235000019354 vermiculite Nutrition 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 235000002532 grape seed extract Nutrition 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 128
- 230000000052 comparative effect Effects 0.000 description 19
- 229910052782 aluminium Inorganic materials 0.000 description 12
- 239000000843 powder Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 235000019483 Peanut oil Nutrition 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000000312 peanut oil Substances 0.000 description 7
- 230000003746 surface roughness Effects 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000007750 plasma spraying Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 235000009754 Vitis X bourquina Nutrition 0.000 description 3
- 235000012333 Vitis X labruscana Nutrition 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000008157 edible vegetable oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 235000021059 hard food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer 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
- 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
Abstract
A non-stick cookware and a method of making the same are provided, the non-stick cookware including a base layer and a non-stick layer formed on the base layer. The non-stick layer includes a layered silicate and grease latched between the structures of the layered silicate. According to the inventive concept, the non-stick layer formed by latching grease using the layered silicate may have excellent non-stick performance.
Description
Technical Field
The invention relates to the technical field of non-stick, in particular to a non-stick coating and a preparation method thereof.
Background
The non-stick cookware includes fluorine-containing resin type non-stick cookware. The technology of the fluorine-containing resin non-stick cooker mainly comprises the step of forming a fluorine-containing resin non-stick layer on the surface of a substrate. The non-stick layer of the fluorine-containing resin has the advantage of excellent non-stick property. However, after a period of use, the fluorine-containing resin is soft in texture due to poor temperature resistance, and the non-stick layer is easily damaged by high temperature or hard food, resulting in a decrease in non-stick property.
Disclosure of Invention
The object of the present inventive concept is to provide a non-stick cooker and a method of manufacturing the same, by which a non-stick coating layer manufactured has excellent non-stick properties.
According to an aspect of the inventive concept, a non-stick cookware includes a base layer and a non-stick layer formed on the base layer. The non-stick layer includes a layered silicate and grease latched between the structures of the layered silicate.
The layered silicate may include at least one of pyrophyllite, kaolinite, muscovite, glauconite, grape stone, chlorite, illite, petalite, lepidolite, hydroxyiron mica, biotite, phlogopite, vermiculite, montmorillonite, talc, and serpentine.
The fat may be an edible fat and is in a solid state.
The thickness of the non-stick layer may be in the range of 20 μm to 100 μm.
The non-stick cookware may also include a transition layer. The transition layer is disposed between the base layer and the non-stick layer.
According to another aspect of the inventive concept, a method of manufacturing a non-stick cookware includes: providing a substrate layer; providing a layered silicate material and applying it to the substrate layer to form a layered silicate layer; contacting the layered silicate layer with a grease such that at least a portion of the grease is trapped between the structures of the layered silicate to form a non-stick layer, thereby making a non-stick cookware, the method may further comprise: a transition layer is formed on the substrate layer and then a layer silicate material is applied over the transition layer.
The step of forming the non-stick layer may include: the grease is brought into contact with the layered silicate layer at a temperature in the range of 80 ℃ to 120 ℃ and the resulting structure is then sintered at a temperature in the range of 280 ℃ to 360 ℃.
The sintering time may be 1 to 5 minutes.
The thickness of the non-stick layer may be in the range of 20 μm to 100 μm.
The method may further comprise: a transition layer is formed on the substrate layer and then a layer silicate material is applied over the transition layer.
According to the above brief description of the inventive concept, excellent non-stick performance of the non-stick cookware can be achieved by latching grease using the layered structure of the layered silicate.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings in which exemplary embodiments are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The non-stick cookware according to the inventive concept may include a base layer and a non-stick layer formed on the base layer.
The base layer may include at least one of an iron-based, an aluminum-based, a stainless steel-based, a titanium-based, and a composite substrate composed of the above substrates, and may have a surface profile of a cooker. However, the exemplary embodiments are not limited thereto.
The base layer may include an inner surface for the accommodation space and an outer surface opposite to the inner surface, and a non-adhesive layer may be provided on the inner surface thereof, and a magnetically conductive layer, an anti-corrosion layer, a decorative layer, and the like may be provided on the outer surface thereof.
The non-stick layer provided on at least part (or all) of the inner surface of the base layer may be a structure formed by latching grease with the structure of the layered silicate.
Layered silicate mainly refers to silicate having a layered crystal structure, which has a layered crystal structure resembling graphite. When the interlayer distance between the layers in the layered silicate is larger, the crystal structure distance of the two layers of silicate is larger, so that the oil storage effect of the non-sticking layer formed by the oil-layer silicate is better.
According to an exemplary embodiment, the layered silicate may include at least one of pyrophyllite, kaolinite, muscovite, glauconite, grape stone, chlorite, illite, petalite, lepidolite, hydroxyiron mica, biotite, phlogopite, vermiculite, montmorillonite, talc, and serpentine, and examples of the chemical formulas thereof may represent, but are not limited to, the following:
serpentine Mg 6 [Si 4 O 10 ](OH) 8 ；
Kaolinite Al 4 [Si 4 O 10 ](OH) 8 ；
Talc Mg 3 [Si 4 O 10 ](OH) 2 ；
Pyrophyllite Al 2 [Si 4 O 10 ](OH) 2 ；
Montmorillonite (Na, ca) 0.33 (Al,Mg,Fe) 2 [(Si,Al) 4 O 10 ](OH) 2 ·nH 2 O；
Vermiculite [ (Mg, ca) 0.5 (H 2 O) 4 ](Mg,Fe,Al) 3 [(Si,Al) 4 O 10 ](OH) 2 ；
Phlogopite KMg 3 [Si 3 AlO 10 ](OH,F) 2 ；
Biotite K (Mg, fe) 3 [Si 3 AlO 10 ](OH,F) 2 ；
Hydroxy iron mica KFE 3 [Si 3 AlO 10 ](OH,F) 2 ；
Muscovite KAl 2 [Si 3 AlO 10 ](OH,F) 2 ；
Lepidolite K (Li, al) 2.5-3 [Si 3.5-3 Al 0.5-1 O 10 ](OH,F) 2 ；
Iron lithium mica K (Li, fe, al) 3 [Si 3-3.5 Al 1-0.5 O 10 ](OH,F) 2 ；
Illite (K, H) 3 O)(Al,Mg,Fe) 2 [(Si,Al) 4 O 10 ](OH) 2 ；
Chlorite (Mg, al, fe) 6 [(Si,Al) 4 O 10 ](OH) 8 ；
Vitis vinifera Ca 2 Al[Si 3 AlO 10 ](OH) 2 ；
Glauconite K (Fe, mg, al) 2 [Si 4 O 10 ](OH) 2 。
According to an exemplary embodiment, the layered structure of the layered silicate resembles a scale structure, the individual scale area being 1 μm 2 ～5μm 2 Within the range of (2), because: too small an area, the strength of the formed layered silicate layer is low; conversely, when the area is too large, the phenomenon of poor non-tackiness tends to occur. In addition, the layered pore spacing of the layered silicate needs to be less than 0.5 μm because the strength of the layered silicate layer formed beyond 0.5 μm is low.
Therefore, the layered silicate formed of the layered silicate has a special pore structure, so that when the layered silicate layer of the layered structure is brought into contact with grease, the grease is latched between the structures of the layered silicate layer, and when the non-stick cooker of the present inventive concept is heated, the latched grease slowly infiltrates to the surface of the layered silicate layer, so that the non-stick layer has non-stick properties.
According to an exemplary embodiment, the layered silicate layer may have a thickness of 20 μm to 100 μm. This is because, when the thickness is less than 20 μm, the layered silicate cannot latch enough grease, and thus the tackiness is insufficient; in addition, when the thickness is greater than 100 μm, the thicker layered silicate layer is more likely to delaminate from the base layer or the transition layer during use, resulting in a reduced lifetime of the non-stick cookware. However, the exemplary embodiments are not limited thereto. Further, the layered silicate layer according to an exemplary embodiment may have a surface roughness (Ra) of less than 3 μm.
As described above, the layered silicate layer according to the exemplary embodiment has a structure capable of latching grease. Here, the grease may be edible grease (e.g., soybean oil, salad oil, peanut oil, etc.) known in the art, and may have a liquid state. However, the inventive concept is not limited thereto. Thus, the grease of the exemplary embodiments of the present inventive concept may act as a blocking agent to block voids or interstices in the formed layered silicate layer.
Because grease is latched in the gaps or layer gaps of the layered silicate layer, compared with a coating with a uniform pore structure (similar to honeycomb), the layered structure layer of the layered silicate layer can ensure the oil absorption on the premise of ensuring the strength of the barrier layer, and on the other hand, the oil can be released for a longer time because the oil is not a through hole, so that the defect that the non-tackiness of a non-stick cooker with the honeycomb-structured coating and the oil storage is reduced or even eliminated after soup boiling can be prevented.
According to an exemplary embodiment, the non-stick layer including the fat-latching layered silicate layer may be directly disposed on the base layer, or a transition layer may be further disposed between the base layer and the non-stick layer in order to improve the coupling force between the non-stick layer and the base layer. According to an exemplary embodiment, the transition layer may include at least one of aluminum, aluminum alloy, zinc alloy, titanium alloy, copper alloy, nickel alloy, and stainless steel, and may have a thickness of 10 μm to 30 μm and a surface roughness of 5 μm to 10 μm.
The non-stick cooker of the present inventive concept has been described in detail above in connection with exemplary embodiments, and a method of manufacturing the same will be described in detail below.
The method of manufacturing a non-stick cooker according to an exemplary embodiment may include: (1) providing a base layer; (2) Providing a layered silicate material and applying it to the substrate layer to form a layered silicate layer; (3) The layered silicate layer is contacted with the grease such that at least a portion of the grease is latched between the structures of the layered silicate to form a non-stick layer.
According to exemplary embodiments of the inventive concept, a base layer having a receiving space may be provided using a blank layer having a certain shape formed of at least one of an iron-based, an aluminum-based, a stainless steel-based, a titanium-based, and a composite substrate formed by combining the above-mentioned substrates. Here, the base layer may have an inner surface for applying the non-stick layer and an outer surface, and the outer surface may be selectively applied with the magnetically conductive layer, the rust preventive layer, or the like.
Further, after the base layer is provided, a blasting treatment may be performed on the base layer (i.e., the inner surface of the base layer) so that the surface roughness of the base layer may be in the range of 3 μm to 8 μm to facilitate firm adhesion of the latter layer. However, the exemplary embodiment is not limited thereto, and the blasting step may be omitted.
In addition, in order to increase the bonding force between the layered silicate layer to be formed later and the base layer, a transition layer may be directly provided on the base layer. That is, a transition layer may be provided on the inner surface of the sandblasted or non-sandblasted base layer. According to an exemplary embodiment, the transition layer may include at least one of aluminum, aluminum alloy, zinc alloy, titanium alloy, copper alloy, nickel alloy, and stainless steel, and may have a thickness of 10 μm to 30 μm and a surface roughness of 5 μm to 10 μm. For example, a transition layer having a thickness of 10 μm to 30 μm and a surface roughness Ra in the range of 5 μm to 10 μm may be formed on the inner surface of the base layer by a plasma spray process using metallic titanium having a particle size of 10 μm to 20 μm, and the process parameters may be: the current is 250A-350A, the voltage is 30V-60V, the main gas (argon) flow is 1500L/H-2000L/H, the hydrogen flow is 30L/H-50L/H, the powder feeding flow is 20L/H-40L/H, the powder feeding flow is 20 g/min-50 g/min, the spraying distance (the distance between the gun nozzle and the workpiece) is 15 cm-25 cm, the spraying angle is 30-80 degrees, and the workpiece temperature is 10-40 ℃. However, exemplary embodiments of the inventive concept are not limited to the above-described processes and corresponding parameters, and the transition layer may be omitted.
Next, a layered silicate material may be prepared. According to an exemplary embodiment, the layered silicate material may include at least one of pyrophyllite, kaolinite, muscovite, glauconite, grape stone, chlorite, illite, petalite, lepidolite, hydroxyiron mica, biotite, phlogopite, vermiculite, montmorillonite, talc, and serpentine, and may have a powder particle size in a range of 20 μm to 100 μm.
After the layered silicate material is prepared, it may be applied to the substrate layer using a layer forming process to form a layered silicate layer. Here, the layered silicate material in the above particle size range may be sprayed on the inner surface of the base layer by means of thermal spraying (e.g., plasma spraying) to form the layered silicate layer. For example, when a thermal spray process is used to form a layered silicate layer, the process parameters may be: the current is 450A-600A; the voltage is 50V-80V; the flow of main gas (argon) is 1000L/H-2000L/H; the hydrogen flow is 50L/H-100L/H; the gas flow of the powder feeding is 20L/H-40L/H; the powder feeding amount is 20 g/min-50 g/min; the spraying distance (the distance between the gun nozzle and the workpiece) is 15 cm-25 cm; the spraying angle is 30-80 degrees; the temperature of the workpiece is 10-40 ℃. Through the above process, a layered silicate layer having a thickness in the range of 20 μm to 100 μm can be formed on the base layer or the transition layer of the cooker. Here, the thermal spraying power depends on the current x voltage value, and when the power value is too small, the layered silicate cannot be melted to form a coating layer, and when the power is too large, the layered structure is broken, resulting in failure to form a layered thermal spraying layer.
After forming the layered silicate layer, the layered silicate layer may be subjected to a sanding treatment to smooth the surface of the layered silicate layer and to control its surface roughness to less than 3 μm. However, the exemplary embodiment is not limited thereto, and this step may be omitted.
Through the above steps, a structure (hereinafter, referred to as a green body) in which the layered silicate layer is attached to the inner surface of the base layer is obtained. Thereafter, the grease may be prepared, and the grease may be brought into contact with the formed layered silicate layer, that is, the layered silicate layer may be subjected to a sealing treatment using the grease.
According to a specific example, an edible oil (e.g., peanut oil) may be uniformly coated on the formed layered silicate layer, and then the green body is left at a temperature of 80-120 ℃ for 3-10 min; and then, wiping off excessive grease attached to the surface layer of the blank body by using a rag. According to another example, further, the blank obtained above may be sintered under a sintering condition of 280 to 360 ℃ for 1 to 5 minutes to solidify the edible oil, so that the problem of mold development of the grease latched in the structure of the layered silicate layer during storage can be prevented, and the cooker can be kept to be certain non-adhesive.
Through the above steps, a non-sticking cooker having excellent non-sticking property can be obtained.
In the following, the advantageous effects of the non-stick cookware of the inventive concept will be embodied in connection with specific examples.
Example 1
An aluminum pan base is provided.
The inner surface of the aluminum pan substrate was sandblasted to control the roughness of the inner surface thereof to be in the range of 4 μm.
A transition layer with a thickness of 30 μm and a roughness of 8 μm was formed on the inner surface of the aluminum pan substrate by plasma spraying technique using titanium particles with a metal particle size of about 10 μm. Here, the parameters of the plasma spraying process are: the current is 250A, the voltage is 40V, the main gas (argon) flow is 1700L/H, the hydrogen flow is 50L/H, the powder feeding flow is 30L/H, the powder feeding amount is 20g/min, the spraying distance is 20cm, the spraying angle is 40 ℃, and the workpiece temperature is 20 ℃.
Kaolinite having a particle size of about 20 μm was sprayed on the transition layer using a plasma spray technique to form a layered silicate layer having a thickness of 20 μm. Here, the parameters of the plasma spraying process are: the current is 600A; the voltage is 80V; the flow rate of main gas (argon) is 2000L/H; the hydrogen flow is 70L/H; the flow rate of the powder feeding air is 40L/H; the powder feeding amount is 30g/min; the spraying distance is 20cm; the spraying angle is 40 degrees; the workpiece temperature was 20 ℃.
Thereafter, a sanding treatment may be performed on the layered silicate layer having a thickness of 20 μm so that the surface roughness of the layered silicate layer is controlled to 2 μm.
The substrate was then heated to 80 c and peanut oil was coated on the layered silicate layer and held for 5 minutes. Subsequently, the surface of the layered silicate layer was wiped with a wipe, and the substrate was placed in a firing chamber at 280℃for 1min to sinter, thereby obtaining a non-stick cooker of example 1.
Example 2
The difference from example 1 is that the layered silicate is chlorite.
Example 3
The difference from example 1 is that the layered silicate is petalite.
Example 4
The difference from example 1 is that the thickness of the non-stick layer is 60. Mu.m.
Example 5
The difference from example 1 is that the thickness of the non-stick layer is 100. Mu.m.
Example 6
The difference from example 1 is that no transition layer is included.
Example 7
The difference from example 1 is that the substrate was heated to 100 ℃ and peanut oil was applied.
Example 8
The difference from example 1 is that the substrate was heated to 120 ℃ and peanut oil was applied.
Example 9
The difference from example 1 is that the sintering temperature is 320 ℃.
Example 10
The difference from example 1 is that the sintering temperature is 360 ℃.
Example 11
The difference from example 1 is that the sintering time is 3min.
Example 12
The difference from example 1 is that the sintering time is 5min.
Comparative example 1
The difference from example 1 is that the layered silicate formed is used directly as a non-stick layer without contact with grease.
Comparative example 2
The difference from example 1 is that the thickness of the non-stick layer is 10 μm.
Comparative example 3
The difference from example 1 is that the thickness of the non-stick layer is 150 μm.
Comparative example 4
The difference from example 1 is that the substrate was heated to 60 ℃ and peanut oil was applied.
Comparative example 5
The difference from example 1 is that the substrate was heated to 150 c and peanut oil was applied.
Comparative example 6
The difference from example 1 is that the sintering temperature is 200 ℃.
Comparative example 7
The difference from example 1 is that the sintering temperature is 400 DEG C
The coatings of examples 1-12 and comparative examples 1-7 were tested for performance and the test results are shown in the following table.
| Scheme for the production of a semiconductor device | Durable tack-free/secondary |
| Example 1 | 12000 |
| Example 2 | 11000 |
| Example 3 | 12000 |
| Example 4 | 13000 |
| Example 5 | 14000 |
| Example 6 | 10000 |
| Example 7 | 13000 |
| Example 8 | 14000 |
| Example 9 | 11000 |
| Example 10 | 10000 |
| Example 11 | 13000 |
| Example 11 | 11000 |
| Comparative example 1 | 1000 |
| Comparative example 2 | 5000 |
| Comparative example 3 | 15000 |
| Comparative example 4 | 9000 |
| Comparative example 5 | 14000 |
| Comparative example 6 | 8000 |
| Comparative example 7 | 1000 |
Wherein, the coating in the table above is durable and non-tacky, and the test method comprises the following steps: the abrasion resistance test method in reference GB/T32095.2-2015 is that the lasting non-tackiness is one more omelette test per 1000 times relative to the abrasion resistance test.
From the above test, it can be seen that: the non-stick cookware formed according to examples 1-12 had excellent durable non-stick properties. In addition, although comparative examples 3 and 5 have higher durable non-tackiness, note is that: the non-stick layer of comparative example 3 is thicker, which increases the cost, and the increased cost is not proportional to the increase in non-stick property, so that the cost performance is not high; the substrate of comparative example 5 was heated at a higher temperature, and on the one hand, too hot was liable to cause scalding of workers, and on the other hand, heating resulted in an increase in cost but an insignificant increase in non-tackiness. For comparative example 7, the grease was carbonized due to the higher sintering temperature, so that the non-tackiness was significantly reduced.
Although one or more embodiments of the present invention have been described, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims.
Claims (9)
1. A non-stick cooker is characterized in that the non-stick cooker comprises a substrate layer and a non-stick layer formed on the substrate layer,
wherein the non-stick layer comprises layered silicate and grease latched between the structures of the layered silicate,
wherein the grease is edible grease and is solid,
wherein the layered structure of the layered silicate material is a scale structure, and the area of single scale is 1 μm 2 ～5μm 2 Within a range of (2), and
wherein the layered silicate has a layered pore spacing of less than 0.5 μm.
2. The non-stick cookware of claim 1, wherein the layered silicate comprises at least one of pyrophyllite, kaolinite, muscovite, glauconite, vitis vinifera, chlorite, illite, petalite, lepidolite, hydroxyiron mica, biotite, phlogopite, vermiculite, montmorillonite, talc, and serpentine.
3. A non-stick cookware as claimed in claim 1, wherein the thickness of said non-stick layer is in the range of 20 μm to 100 μm.
4. The non-stick cookware of claim 1, further comprising a transition layer, wherein the transition layer is disposed between the base layer and the non-stick layer.
5. A method of making a non-stick cookware, the method comprising:
providing a substrate layer;
providing a layered silicate material and applying it to the substrate layer to form a layered silicate layer;
contacting the layered silicate layer with grease such that at least a portion of the grease is trapped between the structures of the layered silicate to form a non-stick layer, thereby producing a non-stick cookware,
wherein the layered structure of the layered silicate material is a scale structure, and the area of a single scale is 1 mu m 2 ～5μm 2 Within a range of (2), and the layered silicate has a layered pore spacing of less than 0.5 μm, and
wherein the grease is edible grease and is solid.
6. The method of claim 5, wherein the step of forming the non-stick layer comprises:
the grease is brought into contact with the layered silicate layer at a temperature in the range of 80 ℃ to 120 ℃ and the resulting structure is then sintered at a temperature in the range of 280 ℃ to 360 ℃.
7. The method of claim 6, wherein the sintering time is 1min to 5min.
8. The method of claim 5, wherein the non-stick layer has a thickness in the range of 20 μm to 100 μm.
9. The method of claim 5, wherein the method further comprises:
a transition layer is formed on the substrate layer and then a layer silicate material is applied over the transition layer.
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