CN114209218A - Composite material, non-stick cookware and method for manufacturing non-stick cookware - Google Patents

Composite material, non-stick cookware and method for manufacturing non-stick cookware Download PDF

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Publication number
CN114209218A
CN114209218A CN202111549379.8A CN202111549379A CN114209218A CN 114209218 A CN114209218 A CN 114209218A CN 202111549379 A CN202111549379 A CN 202111549379A CN 114209218 A CN114209218 A CN 114209218A
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stick
composite material
composite
quasi
crystalline
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CN114209218B (en
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张明
李超
瞿义生
袁华庭
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Wuhan Supor Cookware Co Ltd
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Wuhan Supor Cookware Co Ltd
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/025—Vessels with non-stick features, e.g. coatings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Cookers (AREA)

Abstract

The invention provides a composite material, a non-stick cooker and a method for manufacturing the non-stick cooker. The composite material comprises the following components in percentage by weight: 40 to 80 wt% of a quasi-crystalline/amorphous material, 18 to 59 wt% of a metal material, and 1 to 2 wt% of a cellulose-based binder, wherein the metal material has a melting point lower than that of the quasi-crystalline/amorphous material. The non-stick coating comprises a composite material containing a quasi-crystalline/amorphous material, a low-melting-point metal material and a cellulose binder, so that the non-stick property of the non-stick coating is improved, and a non-stick effect is realized.

Description

Composite material, non-stick cookware and method for manufacturing non-stick cookware
Technical Field
The present invention relates to a composite material, a non-stick cookware and a method of manufacturing the non-stick cookware, and more particularly, to a composite material comprising a quasicrystalline/amorphous material and a low melting point material, a non-stick cookware and a method of manufacturing the non-stick cookware.
Background
At present, in order to avoid the problem of poor non-stick property and abrasion resistance of non-stick coatings including organic fluorine resin coatings (teflon) or ceramic coatings, non-stick cookware is generally manufactured using a quasicrystal/amorphous material as a main component of the non-stick coating, thereby realizing non-stick cookware having excellent characteristics of high hardness, high abrasion resistance, high corrosion resistance, and the like.
However, although the surface energy of the quasicrystal/amorphous material itself is low and has a certain non-adhesiveness, due to the intrinsic brittleness and low adhesion of the quasicrystal/amorphous material, a quasicrystal coating with good performance cannot be obtained by using a low-temperature spraying (such as cold spraying) process in the preparation process. Therefore, when the non-stick coating comprises a quasi-crystalline/amorphous material, it is necessary to employ a coating process such as plasma spraying, flame spraying (e.g., oxy-ethylene flame powder spraying, oxy-acetylene flame wire spraying, oxy-acetylene flame spray welding, supersonic flame spraying, electric arc spraying, etc.) that heats the quasi-crystalline/amorphous material to a molten or semi-molten state and sprays it at high speed against the substrate surface to form a firmly adhering non-stick coating.
However, in the thermal spraying process, the high temperature generated by the thermal spraying can cause the surface of the quasi-crystalline/amorphous material to be oxidized and even the texture to be changed, so that the electron concentration of the quasi-crystalline/amorphous material is reduced, the content of the quasi-crystalline/amorphous material in the non-stick coating is reduced, and the non-stick property of the formed non-stick coating is reduced.
Therefore, research into non-stick coatings comprising quasicrystalline/amorphous materials is awaited.
Disclosure of Invention
The present invention is directed to solving the above-mentioned technical problems in the related art. Therefore, the invention aims to provide a composite material, a non-stick cooker and a method for manufacturing the non-stick cooker, so as to realize the non-stick cooker with the excellent characteristics of improved non-stick property, high hardness, high wear resistance, high corrosion resistance and the like.
According to one aspect of the invention, a composite material for a non-stick coating is provided, the composite material comprising, in weight percent: 40 to 80 wt% of a quasi-crystalline/amorphous material, 18 to 59 wt% of a metal material, and 1 to 2 wt% of a cellulose-based binder, wherein the metal material has a melting point lower than that of the quasi-crystalline/amorphous material. By including a metallic material with a low melting point, the composite material can keep the quasicrystalline/amorphous material less or not melted during the thermal spray process to improve the non-stick properties of the non-stick coating including the composite material.
In an embodiment of the present invention, the quasi-crystalline/amorphous material may include one or more of an iron-based powder, an aluminum-based powder, and a copper-based powder. By including a predetermined quasi-crystalline/amorphous material, the composite material can have low surface energy, high hardness, and high stability.
In embodiments of the invention, the quasicrystalline/amorphous material may comprise FeaCubNbcSidBeWherein a may be 50 to 100, b may be 0 to 5, c may be 0 to 5, d may be 0 to 20, and e may be 0 to 20. By including a predetermined quasi-crystalline/amorphous material, the composite material can have low surface energy, high hardness, and high stability.
In an embodiment of the invention, most amorphous materials start to crystallize after 800 ℃, therefore preferably metals and their alloys are selected with a melting point below 800 ℃, in particular, the metallic material may comprise one or more of metals and their alloys with a melting point below 800 ℃. Preferably, the metal material may include one or more of aluminum, zinc, antimony, and magnesium. By including a metallic material having a melting point lower than that of the quasicrystalline/amorphous material, the quasicrystalline/amorphous material can be kept less molten or not molten during the thermal spray process, reducing the crystallization of the quasicrystalline/amorphous material to improve the non-tackiness of the non-stick coating including the composite material.
In embodiments of the present invention, the cellulosic binder may comprise one or more of hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose. By using a cellulose-based binder instead of an alcohol-based binder, the porosity of the non-stick coating can be increased and the non-stick property can be improved.
In embodiments of the invention, the particle size of the composite material may be 20 μm to 100 μm. By controlling the particle size of the composite material within a predetermined range, the process cost can be reduced, and the problem of unsmooth production of subsequent processes can be avoided.
According to another aspect of the present invention there is provided a non-stick cookware comprising: a substrate including an inner surface for carrying an article and an outer surface facing away from the inner surface; and a non-stick coating disposed on an inner surface of the substrate and comprising the composite material described above. The non-stick cookware can have improved non-stick property, and achieve durable non-stick use effect.
According to another aspect of the invention there is provided a method of manufacturing non-stick cookware, the method comprising spraying a composite material onto a substrate by a thermal spraying process to form a non-stick coating. The non-stick cookware obtained by this method has improved non-stick properties when using the above composite materials.
According to embodiments of the present invention, there is provided a composite material for a non-stick coating, a non-stick cookware comprising the composite material, and methods of making the same. The surface of the non-stick cooker can form a non-stick coating by means of thermal spraying, and the non-stick coating comprises a composite material containing a quasi-crystal/amorphous material, a low-melting-point metal material and a cellulose binder, so that the non-stick property of the non-stick coating is improved, and the non-stick effect is realized. The composite material for the non-stick coating may include a metal material having a melting point lower than that of the quasi-crystalline/amorphous material to prevent the surface of the quasi-crystalline/amorphous material from being crystallized after being melted by a high temperature and even to be changed in texture when the thermal spraying process is performed, thereby improving the non-stick property of the non-stick coating.
Drawings
The above and/or other features and aspects of the present invention will become apparent and appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view of a non-stick cookware according to an embodiment of the present invention.
FIG. 2 is a flow chart of a method of making a non-stick cookware according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below. While exemplary embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited by 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.
As previously mentioned, the non-stick coatings included in non-stick cookware in the prior art have more or less certain functional drawbacks, and the present invention proposes a composite material for non-stick coatings with more optimal properties.
The composite material for the non-stick coating can comprise a quasi-crystal/amorphous material, a metal material with a melting point lower than that of the quasi-crystal/amorphous material and a cellulose binder, and the non-stick coating formed by the composite material can keep good performance in a thermal spraying process and improve the non-stick property of the non-stick coating. Specifically, the composite material comprises the following components in percentage by weight: 40 to 80 wt% of a quasi-crystalline/amorphous material, 18 to 59 wt% of a metal material, and 1 to 2 wt% of a cellulose-based binder.
According to an embodiment of the present invention, the quasi-crystalline/amorphous material may include any suitable quasi-crystalline/amorphous material in the art, for example, one or more of an iron-based powder, an aluminum-based powder, and a copper-based powder, and preferably, the quasi-crystalline/amorphous material may be an iron-based powder. As a specific example, the quasi-crystalline/amorphous material may include FeaCubNbcSidBeWherein a may be 50 to 100, b may be 0 to 5, c may be 0 to 5, d may be 0 to 20, and e may be 0 to 20.
The weight of the quasicrystalline/amorphous material is 40 wt% to 80 wt%, based on the total weight of the composite. Here, it is mainly considered that, in the composite material for the non-stick coating, when the weight of the quasicrystalline/amorphous material is less than 40 wt% based on the total weight of the composite material, the quasicrystalline/amorphous material is less in occupancy, easily causing problems such as poor non-stick property of the finally formed non-stick coating; when the weight of the quasi-crystalline/amorphous material is more than 80 wt%, the metal material is less in occupancy, and when the thermal spraying process is performed, the amount of heat absorbed by the metal material is less, which easily causes the quasi-crystalline/amorphous material to be lost due to the high temperature generated by the thermal spraying process, resulting in poor non-tackiness of the finally formed non-stick coating. In embodiments of the invention, in the composite for the non-stick coating, the weight of the quasicrystalline/amorphous material may preferably be 45 wt% to 80 wt%, 45 wt% to 75 wt%, 50 wt% to 70 wt%, 55 wt% to 75 wt%, 55 wt% to 70 wt%, 60 wt% to 65 wt%, etc., based on the total weight of the composite. In particular, in the composite material for the non-stick coating, the weight of the quasicrystalline/amorphous material may preferably be 45 wt%, 50 wt%, 55 wt%, 60 wt%, 65 wt%, 70 wt%, 75 wt% or 80 wt%, based on the total weight of the composite material.
According to an embodiment of the present invention, the metal material may include one or more of titanium, a titanium alloy, stainless steel, low carbon steel, high carbon steel, and cast iron. Specifically, when the composite material for the non-stick coating includes a quasi-crystalline/amorphous material and a metal material having a low melting point, the melting point of the metal material may be lower than that of the quasi-crystalline/amorphous material. Thus, when the composite material including the quasi-crystalline/amorphous material and the metal material having a low melting point is coated on the base body of the non-stick cookware through the thermal spraying process, the metal material having a low melting point can absorb part of heat generated in the thermal spraying process and form a film after melting to protect the quasi-crystalline/amorphous material from being melted as little as possible and then prevent the quasi-crystalline/amorphous material from being crystallized, to reduce the influence of high temperature on the quasi-crystalline/amorphous material, and to improve the non-stick property of the non-stick coating.
According to an embodiment of the present invention, the metal material may include one or more materials of a metal having a melting point below 800 ℃, and an alloy thereof, such as aluminum (having a melting point of 660 ℃), zinc (having a melting point of 420 ℃), antimony (having a melting point of 630 ℃), magnesium (having a melting point of 650 ℃), and the like.
In an embodiment of the invention, in the composite material for the non-stick coating, the weight of the metallic material is 18 to 59 wt%, based on the total weight of the composite material. In embodiments of the invention, in the composite for the non-stick coating, the weight of the metal material may be 18 wt% to 59 wt%, 18 wt% to 54 wt%, 23 wt% to 49 wt%, 28 wt% to 54 wt%, 28 wt% to 49 wt%, 33 wt% to 44 wt%, etc., based on the total weight of the composite. Specifically, in the composite for the non-stick coating, the weight of the metal material may be 18 wt%, 23 wt%, 28 wt%, 33 wt%, 44 wt%, 49 wt%, 54 wt%, or 59 wt%, based on the total weight of the composite.
According to embodiments of the present invention, the cellulosic binder may include one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and any other suitable cellulosic binder.
In the preparation process of the conventional non-sticky granulated powder, an alcohol binder is preferably used as the binder of the non-sticky granulated material, because the alcohol binder is not retained in the coating after being subjected to the high temperature of the thermal spraying process, more pores can be provided for the coating, so that oil can be stored, and the surface of the coating can form a lotus leaf-like structure, thereby improving the non-sticky property of the coating. However, in the embodiment of the present invention, due to the presence of the metal material having a melting point lower than that of the quasicrystalline/amorphous material, the degree of improvement of non-adhesiveness due to the increase of porosity (or porosity) by the alcohol binder is not large as compared with the cellulose binder, and specifically, when the alcohol binder is selected as the binder, in the finally formed coating, after the alcohol binder is subjected to high-temperature volatilization by the thermal spraying process, since the metal material is melted by absorbing heat, the fluidity thereof becomes strong, and part of the pores in the coating are filled, and thus, the porosity of the coating becomes very low.
In embodiments of the present invention, when a cellulosic binder is selected as the granulation binder, the cellulosic binder may shrink after being subjected to the high temperatures of the thermal spray process, thereby providing some porosity to the non-stick coating (porosity is proportional to the content of the cellulosic binder). The non-stick coating formed by using the cellulose-based binder has a porosity higher by 1% to 2% than that of the non-stick coating formed by using the alcohol-based binder, and therefore, in the embodiment of the present invention, the cellulose-based binder is selected as the granulation binder, thereby improving the non-stick property of the non-stick coating.
In embodiments of the invention, the weight of the cellulosic binder in the composite for the non-stick coating may be 1 wt% to 2 wt%, based on the total weight of the composite. Here, it is mainly considered that, in the composite material for the non-stick coating, when the weight of the cellulose-based binder is less than 1 wt% based on the total weight of the composite material, since the proportion of the cellulose-based binder is small, granulation cannot be efficiently performed, in the non-stick coating finally formed, the effect of increasing the porosity by the cellulose-based binder is insignificant and the non-stick property to the non-stick coating finally formed is not significantly increased; when the weight of the cellulose-based binder is more than 2 wt%, the cellulose-based binder is in a high proportion, which may cause a caking phenomenon after a subsequent spray drying or sintering process, thereby reducing the overall production efficiency.
In embodiments of the invention, the particle size of the composite material may be 20 μm to 100 μm. Here, it is mainly considered that when the particle size of the composite material is smaller than 20 μm, the problems of blockage of a powder feeding pipe and the like in a spraying matching device used in a subsequent thermal spraying process are easily caused, and the production is not smooth; when the particle size of the composite material is larger than 100 micrometers, on one hand, the granulation cost is low, the cost is high, and the production control is not facilitated, and on the other hand, larger particles can form a sharp rough structure, so that the finally formed non-stick coating cannot form a lotus leaf structure, and the non-stick property is poor.
In embodiments of the invention, the particle size of the composite material may be 20 μm to 100 μm, 20 μm to 90 μm, 30 μm to 80 μm, 40 μm to 70 μm, 50 μm to 70 μm, 60 μm to 70 μm, and the like. Specifically, the particle size of the composite material may be 20 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, or 70 μm.
In embodiments of the invention, the above-described composite material may be sprayed onto the surface of the base of cookware by thermal spraying to form a non-stick coating with improved non-stick properties.
Non-stick cookware comprising the above-described composite will be described in detail below with reference to FIG. 1.
FIG. 1 shows a schematic structural view of a non-stick cookware 100 according to one embodiment of the present invention.
As shown in FIG. 1, the non-stick cookware 100 includes a base 120 and a non-stick coating 140 on a surface of the base.
The base 120 may be the body of a non-stick cookware, for example, when the non-stick cookware is a pan, the base may be a pan body. The substrate 120 may be made of any suitable material commonly used in the art. The substrate 120 may include an inner surface for carrying the article and an outer surface facing away from the inner surface.
The non-stick coating 140 may be located on the inner surface of the substrate 120. The non-stick coating 140 may comprise a composite material as described above, such that the non-stick coating 140 may have improved non-stick properties.
It should be understood that the non-stick cookware 100 according to the present invention may also have a common cookware structure such as a cookware handle (e.g., pan handle), with only the body portion of the non-stick cookware illustratively shown in FIG. 1, and the other portions not shown.
The non-stick cookware according to the present invention includes a non-stick coating formed by a composite material, such that the non-stick cookware has improved non-stick properties.
A method of manufacturing a non-stick cookware according to an embodiment of the invention will be described in detail with reference to fig. 2.
FIG. 2 shows a flow diagram of a method of manufacturing a non-stick cookware according to an embodiment of the invention.
Referring to fig. 2, a method of manufacturing non-stick cookware according to an embodiment of the invention includes spraying the above-described composite material onto a substrate of the non-stick cookware by a thermal spraying process to form a non-stick coating.
Specifically, a method of manufacturing a non-stick cookware according to an embodiment of the invention may include: preparing a base body of the non-stick cookware (step S310); and forming a non-stick coating on the surface of the substrate by a thermal spraying process (step S320).
In step S310, the base of the non-stick cookware may be a pot blank, which may be commercially available or may be manufactured using any of the existing techniques.
Furthermore, according to an embodiment of the present invention, the surface of the pot blank may be first subjected to a pretreatment operation such as cleaning and surface roughening.
Subsequently, in step S320, the above composite material is sprayed on the surface of the pot blank by a thermal spraying process, thereby forming a non-stick coating. The composite material will not be described in detail here.
In embodiments of the present invention, the thermal spray process may be performed under any suitable conditions.
In the invention, because the composite material comprises the quasi-crystal/amorphous material and the metal material with low melting point, during the thermal spraying process, the metal material can preferentially absorb a part of heat and melt into a film after absorbing the heat, so that the quasi-crystal/amorphous material in the composite material is less melted or not melted, further the surface oxidation and even the change of the texture structure of the quasi-crystal/amorphous material are avoided, the electron concentration of the quasi-crystal/amorphous material is avoided from being reduced, and the non-adhesiveness of the finally formed non-stick coating is improved.
By coating the composite material on the surface of the non-stick pan, the finally formed non-stick pan can have improved non-stick property, and the effect of lasting non-stick is achieved.
The method for manufacturing the non-stick pan of the present invention will be described in detail with reference to the following embodiments.
Example 1
Iron-based powder (Fe) to be used as quasi-crystalline/amorphous material80Cu5Nb5Si5B5) And aluminum material as metal material, respectively, grinding in a ball mill at 1000r/min and 2:1 under nitrogen protection for 22 hr at vacuum degree of 5 × 10-3Pa and a temperature of 150 ℃ for 2 hours to obtain a powder having an average particle diameter of 20 μm.
The mixed liquid portion was prepared by mixing a liquid from 2 wt% of hydroxymethyl cellulose, 1 wt% of citric acid, 2 wt% of polyether-modified silicone oil, and 95 wt% of deionized water.
And mixing the ground iron-based powder and aluminum-based powder in a mass ratio of 3:2 with the mixed liquid to obtain a composite material slurry, wherein the mixed liquid accounts for 50 wt%. Then, the composite slurry was transferred to a high-speed liquid-throwing disk at 10000 rpm to form droplets. The drops are blown into a drying tower at 300 ℃ by hot air at 90 ℃ and stay for about 20 seconds in the dropping process of the drops, so that the drops form particles. The particles were sintered at an initial temperature of 25 deg.C, a temperature rise rate of 10 deg.C/min, and a final temperature of 180 deg.C for 10 hours. The sintered particles were then sieved to obtain composite particles comprising an average particle size of 40 um. In the finally obtained composite particles, the binder accounts for 1.5 wt%, the iron-based material accounts for 59.1 wt%, and the balance is aluminum material.
The composite material particles are sprayed on the surface of the pan body through a thermal spraying process to form a non-stick coating with the thickness of 50 mu m.
Example 2
The difference from the embodiment 1 is that,the metal material is zinc material。
Example 3
The difference from the embodiment 1 is that, 78 12 10the quasi-crystal/amorphous material is FeSiB。
Example 4
The difference from the embodiment 1 is that,the proportion of the iron-based material in the finally obtained composite material particles is 45.5wt％。
Example 5
The difference from the embodiment 1 is that,the proportion of the iron-based material in the finally obtained composite material particles is 75.1wt％。
Comparative example 1
And embodiments thereof1 is different in that,the metal material is low-carbon steel (melting point 1540℃)。
Comparative example 2
The difference from the embodiment 1 is that,directly spraying iron-based material on the surface of the pot body to form a layer with the thickness of 50 mu m Non-stick coating of。
Comparative example 3
The difference from the embodiment 1 is that,the proportion of the iron-based material in the finally obtained composite material particles is 38.1wt％。
Comparative example 4
The difference from the embodiment 1 is that,the proportion of the iron-based material in the finally obtained composite material particles is 82.1wt％。
The non-stick coatings of examples 1 to 5 and comparative examples 1 to 4 above were then subjected to performance tests, the results of which are shown in table 1.
Specifically, the test method is as follows:
(1) test method for initial tack free: the non-stickiness test method of the fried egg in GB/T32095.2-2015 is an initial non-stickiness test, and the test result is divided into I, II and III grades, wherein the non-stickiness of the I grade is the highest, and the non-stickiness of the III grade is the lowest.
(2) Non-stick durability test method: the test unit of the durable non-stick property test method in GB/T32388-2015 is times, and the higher the times, the better the non-stick durability, namely the longer the service life of the non-stick cookware. Where the tack-free durability was tested, the number of times until the tack-free reached grade III was recorded.
TABLE 1
Examples of the invention Initial non-tackiness Non-stick durability (time))
Example 1 Ⅰ 43000
Example 2 Ⅰ 45000
Example 3 Ⅰ 47000
Example 4 Ⅱ 32000
Example 5 Ⅱ 30000
Comparative example 1 Ⅲ 0
Comparative example 2 Ⅲ 0
Comparative example 3 Ⅲ 0
Comparative example 4 Ⅲ 0
Generally, a non-stick cookware is considered to have improved non-stick properties when the non-stick coating has an initial non-stick property of class II or above and a non-stick durability of the non-stick coating of 10000 times or above.
As can be seen from the data in table 1, the non-stick coatings of examples 1 to 5 according to the invention have improved non-stick properties compared to comparative examples 1 to 4.
In summary, according to the embodiments of the present invention, since the composite material for the non-stick coating may include a metal material having a melting point lower than that of the quasicrystalline/amorphous material, the surface of the non-stick cookware may be formed into the non-stick coating by means of thermal spraying, and the non-stick coating has improved non-stick property, achieving the non-stick effect.
The invention prepares the non-stick coating with optimized performance by reasonably optimizing the components of the composite material for the non-stick coating and a thermal spraying process. The non-stick cooker prepared from the composite material realizes multiple performances such as shovel resistance, lasting non-stick performance and the like, so that the user experience is greatly improved.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, 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 of the present invention as defined by the following claims and their equivalents. The embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention.

Claims (9)

1. A composite for a non-stick coating, the composite comprising, in weight percent: 40 to 80 wt% of a quasi-crystalline/amorphous material, 18 to 59 wt% of a metal material, and 1 to 2 wt% of a cellulose-based binder, wherein the metal material has a melting point lower than that of the quasi-crystalline/amorphous material.
2. The composite material of claim 1, wherein the quasi-crystalline/amorphous material comprises one or more of an iron-based powder, an aluminum-based powder, and a copper-based powder.
3. The composite material of claim 1, wherein the quasi-crystalline/amorphous material comprises FeaCubNbcSidBeWherein a is 50 to 100, b is 0 to 5, c is 0 to 5, d is 0 to 20, and e is 0 to 20.
4. The composite material of claim 1, wherein the metallic material comprises one or more of a metal having a melting point below 800 ℃ and alloys thereof.
5. The composite material of claim 1, wherein the metallic material comprises one or more of aluminum, zinc, antimony, and magnesium.
6. The composite of claim 1, wherein the cellulosic binder comprises one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl methyl cellulose.
7. The composite material according to claim 1, wherein the particle size of the composite material is 20 to 100 μ ι η.
8. A non-stick cookware, comprising:
a substrate comprising an inner surface for carrying an article and an outer surface facing away from the inner surface; and
a non-stick coating disposed on said inner surface of said substrate and comprising a composite material according to any one of claims 1 to 7.
9. A method of manufacturing non-stick cookware, the method comprising spraying the composite of any of claims 1 to 7 onto a substrate by a thermal spray process to form a non-stick coating.
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