CN112515461A - Method for manufacturing enamel interlayer non-stick pan - Google Patents

Method for manufacturing enamel interlayer non-stick pan Download PDF

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Publication number
CN112515461A
CN112515461A CN202011328407.9A CN202011328407A CN112515461A CN 112515461 A CN112515461 A CN 112515461A CN 202011328407 A CN202011328407 A CN 202011328407A CN 112515461 A CN112515461 A CN 112515461A
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China
Prior art keywords
stick
coating
enamel
aluminum
manufacturing
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CN202011328407.9A
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Chinese (zh)
Inventor
王成
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Ningbo Golden Elephant Kitchenware Co ltd
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Ningbo Golden Elephant Kitchenware Co ltd
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Priority to CN202011328407.9A priority Critical patent/CN112515461A/en
Publication of CN112515461A publication Critical patent/CN112515461A/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/002Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/025Vessels with non-stick features, e.g. coatings
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Cookers (AREA)

Abstract

The invention provides a method for manufacturing an enamel interlayer non-stick pan, which has the following advantages: water-based environmental protection: the nano enamel coating and the non-stick coating are water-soluble materials and are non-toxic; non-stick property: the nano enamel coating is used independently, the non-adhesiveness to metal products is extremely poor, and the nano enamel coating has good non-adhesiveness after the treatment by the process; strong adhesive force: when the nano non-stick coating is used alone, the coating is easy to fall off, and the coating is remained on the surface of a product and is not easy to remove; after the coating falls off, the non-adhesiveness is seriously reduced, and the addition of the nano enamel coating enhances the adhesive force; high temperature resistance: the metal product treated by the process can be used for a long time below 260 ℃; high hardness: when the nano non-stick coating is used independently, the hardness of the coating is low, and the coating is easy to fall off; the nano enamel coating has the characteristic of high hardness, and the process has the advantages that the processed mould has high hardness and is wear-resistant, and the phenomena of scratching, delamination and the like can not occur; corrosion resistance: acid and alkali resistance, and almost inert to all chemicals.

Description

Method for manufacturing enamel interlayer non-stick pan
Technical Field
The invention belongs to the technical field of cooking equipment, and particularly relates to a method for manufacturing an enamel interlayer non-stick pan.
Background
The nonstick pan can be divided into a boiling pan, a frying pan and a milk pan according to different use functions, and the nonstick coating system on the inner surface can be divided into a one-layer system, a two-layer system and a three-layer system. One layer system refers to a non-stick layer consisting of a single coating; the two-layer system is a non-stick layer consisting of a bottom layer and a surface layer; the three-layer system is a non-stick layer consisting of 3 coatings of a bottom layer, a middle layer and a surface layer.
Enamel pot is also called enamel coating aluminum alloy pot. The enamel coating is inorganic glass enamel coated on the surface of the aluminum-based pan blank, and has no toxic or side effect on human bodies. The enamel on the metal surface can prevent the metal from being oxidized, so that the aluminum alloy substrate is not easy to form an oxide layer on the surface when being heated, and can resist the corrosion of various liquids, therefore, in the process of cooking food by using the enamel pot, harmful dissolved substances cannot be generated due to high temperature, and the enamel pot has good acid and alkali resistance and cannot react with the food chemically. The aluminum alloy pot is composed of aluminum and other metal components, and the natural alloy material is lighter than the common metal material, is the acknowledged best pot material, and has the advantages of fast and uniform heat conduction and good heat preservation. The enamel pot is the perfect combination of natural aluminum alloy materials and high-grade high-quality enamel.
The enamel coating in the prior art has high sintering temperature, low yield and poor sintering quality; the enamel coating has poor high temperature resistance and corrosion resistance, low bonding fastness with the pot body, and easy falling, so that heavy metal in the pot body is separated out under the high temperature condition, and the food health and safety of people are seriously threatened.
Currently, in order to meet the cooking requirement, a non-stick coating, such as PTFE coating, PFA coating, ceramic coating, and other various non-stick coatings, is usually provided in the cooking utensil, or a special treatment is performed on the surface of the pot body to form the non-stick coating. However, the non-stick coating is easy to damage and fall off in the long-term use process, so that the non-stick performance of the non-stick coating is greatly reduced.
Disclosure of Invention
The invention aims to provide a method for manufacturing an enamel interlayer non-stick pan which has good anti-corrosion effect, can be used for a long time even in a humid environment or an acid-base environment, has low production cost, is flexible and controllable, can realize large-scale production, improves the high temperature resistance and the corrosion resistance of an enamel coating, slows down the phenomenon that the enamel coating on a pan body falls off under the action of high temperature and an acid-base solution, and has higher hardness, better wear resistance, corrosion resistance or better non-stick property.
In order to solve the technical problem, the invention is solved by the following technical scheme:
the invention provides a method for manufacturing an enamel interlayer non-stick pan, which comprises the following steps:
and step A, placing an aluminum sheet into a mold, forming a pot blank in a stretching type extrusion mode, and demolding to obtain the pot blank with the aluminum base.
B, pretreating the surface of the aluminum substrate, and spraying a non-stick material on the pretreated aluminum substrate, wherein the thickness of the coating is 0.06-0.07mm, so as to obtain a semi-finished non-stick pan;
and C, carrying out heat treatment on the non-stick pan semi-finished product to obtain a non-stick pan finished product.
The manufacturing method of the enamel interlayer non-stick pan comprises the following steps:
step B1, preparing raw materials including enamel, non-stick paint and purified water;
step B2, removing moisture, glaze dirt, dust, pollutant, rust and oxide skin on the surface of the substrate, and degreasing and sand blasting;
and step B3, coating a primer coating on the surface of the treated aluminum base pot blank.
In the above method for manufacturing an enamel sandwich non-stick pan, step B2 includes:
step B21, putting the aluminum-based bottom pot blank into a pool with degreasing agents, and removing glaze and dirt on the surface of the aluminum-based bottom pot blank;
and step B22, performing sand blasting on the processed aluminum base pot blank working surface.
In the above method for manufacturing an enamel sandwich non-stick pan, step B3 includes:
step B31, spraying nano enamel paint on the working surface of the processed aluminum-based bottom pot blank, and uniformly spraying the nano enamel paint on the working surface of the aluminum-based bottom pot blank with the thickness of 40-45 microns;
and step B32, putting the treated mould into an oven, and sintering for 0.2 hour at the temperature of 530 ℃.
In the above method for manufacturing an enamel sandwich non-stick pan, step B3 further includes:
and step B33, spraying non-stick paint on the working surface of the treated aluminum base pot blank, and uniformly spraying the non-stick paint on the mould with the thickness of 20-25 microns.
And step B34, placing the treated aluminum-based bottom pot blank into an oven, firstly sintering at the temperature of 160-180 ℃ for 0.3 hour, then sintering at the temperature of 400-420 ℃ for 0.3 hour, and taking out the aluminum-based bottom pot blank and cooling to room temperature.
According to the manufacturing method of the enamel interlayer non-stick pan, the non-stick coating comprises the ground coat and the overglaze, and the weight percentage of each chemical component of the ground coat meets the following requirements: 1-2% of epoxy silane, 3-6% of polyether sulfone, 3-6% of polyamide imide, 5-8% of polytetrafluoroethylene, 6-8% of perfluoroethylene propylene copolymer, 2-3% of carbon black, 2-4% of silicon carbide, 3-7% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 30-50% of polytetrafluoroethylene, 1-2% of pearl powder, 1-2% of propylene glycol and the balance of water.
According to the manufacturing method of the enamel interlayer non-stick pan, the weight percentage of each chemical component of the base glaze meets the following requirements: 1% of epoxy silane, 5% of polyether sulfone, 5% of polyamide imide, 7% of polytetrafluoroethylene, 7% of a perfluoroethylene-propylene copolymer, 2.5% of carbon black, 3% of silicon carbide, 5% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 40% of polytetrafluoroethylene, 1% of pearl powder, 2% of propylene glycol and the balance of water.
According to the manufacturing method of the enamel interlayer non-stick pan, the non-stick material comprises graphene or graphite oxide which is uniformly doped in the non-stick material, and the doping ratio of the graphene or the graphite oxide is 1:1000-6:1000 based on the mass of the non-stick material.
The manufacturing method of the enamel interlayer non-stick pan has the following advantages: 1. water-based environmental protection: the nano enamel coating and the non-stick coating are both used on food cookers at present and are water-soluble materials, so that the nano enamel coating and the non-stick coating are non-toxic and harmless, and have no adverse effect on human bodies during construction; 2. non-stick property: the nano enamel coating is used independently, the non-adhesiveness to metal products is extremely poor, and after the treatment by the process, the nano enamel coating has good non-adhesiveness and can be produced continuously; 3. strong adhesive force: when the nano non-stick coating is used alone, the coating is easy to fall off, and the coating is remained on the surface of a product and is not easy to remove, so that the appearance of the product is influenced; after the coating falls off, the non-adhesiveness is seriously reduced, and the addition of the nano enamel coating enhances the adhesive force, so that the service life of the product is prolonged by 5 times; 4. high temperature resistance: the metal product treated by the process can be used for a long time below 260 ℃; 5. high hardness: when the nano non-stick coating is used independently, the hardness of the coating is low, and the coating is easy to fall off; the nano enamel coating has the characteristic of high hardness, and the blank pot body treated by the process has high hardness and is wear-resistant, and the phenomena of scratching, delaminating and the like can not occur; 6. corrosion resistance: acid and alkali resistance, and almost inert to all chemicals. The preparation method has low production cost, is flexible and controllable, and is suitable for modification of various anticorrosive coatings and metal corrosion prevention in a larger range.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.
The invention provides a method for manufacturing an enamel interlayer non-stick pan, which comprises the following steps:
step A, placing an aluminum sheet into a mold, forming a pot blank in a stretching type extrusion mode, and obtaining an aluminum base pot blank after demolding;
b, pretreating the surface of the aluminum substrate, and spraying a non-stick material on the pretreated aluminum substrate, wherein the thickness of the coating is 0.06-0.07mm, so as to obtain a semi-finished non-stick pan;
and C, carrying out heat treatment on the non-stick pan semi-finished product to obtain a non-stick pan finished product.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the step B includes:
step B1, preparing raw materials including enamel, non-stick paint and purified water;
step B2, removing moisture, glaze dirt, dust, pollutant, rust and oxide skin on the surface of the substrate, and degreasing and sand blasting;
and step B3, coating a primer coating on the surface of the treated aluminum base pot blank.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the step B2 includes:
step B21, putting the aluminum-based bottom pot blank into a pool with a degreasing agent, and removing glaze and dirt on the surface of the mould;
and step B22, performing sand blasting on the processed aluminum base pot blank working surface, wherein the sand blasting roughness is required to reach 3-5 microns, the sand blasting pressure is 7-9 kilograms, and the sand number is No. 40-80 brown corundum.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the step B3 includes:
step B31, spraying nano enamel paint on the working surface of the processed aluminum-based bottom pot blank, uniformly spraying the nano enamel paint on the working surface of the aluminum-based bottom pot blank with the thickness of 40-45 microns, fully stirring the nano ceramic paint for 20 minutes before use, standing for 10 minutes, and injecting the nano ceramic paint into a spray gun, wherein in the process, pure water is required to be added according to the weight ratio of the pure water to the nano ceramic paint of 0.3: 1;
and step B32, putting the treated aluminum-based bottom pot blank into an oven, sintering for 0.3 hour at the temperature of 530 ℃, taking out the aluminum-based bottom pot blank, and cooling to 40-60 ℃ at room temperature.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the step B3 further includes:
step B33, spraying non-stick paint on the working surface of the processed aluminum-based bottom pot blank, uniformly spraying the non-stick paint on the aluminum-based bottom pot blank with the thickness of 20-25 microns, wherein the Teflon paint is fully stirred for 30 minutes before use, and then is poured into a spray gun after standing for 20 minutes;
and step B34, placing the treated aluminum-based bottom pot blank into an oven, firstly sintering at the temperature of 160-180 ℃ for 0.3 hour, then sintering at the temperature of 400-420 ℃ for 0.3 hour, and taking out the aluminum-based bottom pot blank and cooling to room temperature.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the non-stick coating includes a base coat and a cover coat, and the base coat should satisfy the following requirements in terms of chemical components by weight percent: 1-2% of epoxy silane, 3-6% of polyether sulfone, 3-6% of polyamide imide, 5-8% of polytetrafluoroethylene, 6-8% of perfluoroethylene propylene copolymer, 2-3% of carbon black, 2-4% of silicon carbide, 3-7% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 30-50% of polytetrafluoroethylene, 1-2% of pearl powder, 1-2% of propylene glycol and the balance of water.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan of the present invention, the weight percentages of the chemical components of the ground glaze should satisfy the following requirements: 1% of epoxy silane, 5% of polyether sulfone, 5% of polyamide imide, 7% of polytetrafluoroethylene, 7% of a perfluoroethylene-propylene copolymer, 2.5% of carbon black, 3% of silicon carbide, 5% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 40% of polytetrafluoroethylene, 1% of pearl powder, 2% of propylene glycol and the balance of water.
Further, in a preferred embodiment of the method for manufacturing the enamel sandwich non-stick pan, the non-stick material comprises graphene or graphite oxide uniformly doped therein, and the doping ratio of the graphene or graphite oxide is 1:1000-6:1000 based on the mass of the non-stick material.
The manufacturing method of the enamel interlayer non-stick pan has the following advantages: 1. water-based environmental protection: the nano enamel coating and the non-stick coating are both used on food blowing tools at present and are water-soluble materials, so that the nano enamel coating and the non-stick coating are non-toxic and harmless, and the construction has no adverse effect on human bodies; 2. non-stick property: the nano enamel coating is used independently, the non-adhesiveness to metal products is extremely poor, and after the treatment by the process, the nano enamel coating has good non-adhesiveness and can be produced continuously; 3. strong adhesive force: when the nano non-stick coating is used independently, the coating is easy to fall off, and the coating is remained on the surface of a product and is not easy to remove, so that the appearance of the product is influenced; the non-adhesiveness is seriously reduced after the coating falls off, and the addition of the nano enamel coating enhances the adhesive force, so that the service life of the die is prolonged by 5 times; 4. high temperature resistance: the metal product treated by the process can be used for a long time below 260 ℃; 5. high hardness: when the nano non-stick coating is used independently, the hardness of the coating is low, and the coating is easy to fall off; the nano enamel coating has the characteristic of high hardness, and the process has the advantages that the processed mould has high hardness and is wear-resistant, and the phenomena of scratching, delamination and the like can not occur; 6. corrosion resistance: acid and alkali resistance, and almost inert to all chemicals. The preparation method has low production cost, is flexible and controllable, and is suitable for modification of various anticorrosive coatings and metal corrosion prevention in a larger range.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The method for manufacturing the enamel interlayer non-stick pan is characterized by comprising the following steps of:
step A, placing an aluminum sheet into a mold, forming a pot blank in a stretching type extrusion mode, and obtaining an aluminum base pot blank after demolding;
b, pretreating the surface of the aluminum substrate, and spraying a non-stick material on the pretreated aluminum substrate, wherein the thickness of the coating is 0.06-0.07mm, so as to obtain a semi-finished non-stick pan;
and C, carrying out heat treatment on the non-stick pan semi-finished product to obtain a non-stick pan finished product.
2. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 1, wherein the step B comprises:
step B1, preparing raw materials including enamel, non-stick paint and pure water;
step B2, removing moisture, glaze dirt, dust, pollutant, rust and oxide skin on the surface of the substrate, and degreasing and sand blasting;
and step B3, coating a primer coating on the surface of the treated aluminum base pot blank.
3. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 2, wherein the step B2 comprises:
step B21, putting the aluminum-based bottom pot blank into a pool with degreasing agents, and removing glaze and dirt on the surface of the aluminum-based bottom pot blank;
and step B22, performing sand blasting treatment on the processed aluminum base pot blank working surface.
4. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 2, wherein the step B3 comprises:
step B31, spraying nano enamel paint on the working surface of the treated aluminum-based bottom pot blank, and uniformly spraying the nano enamel paint on the aluminum-based bottom pot blank with the thickness of 40-45 microns;
and step B32, putting the treated aluminum-based bottom pot blank into an oven, sintering for 0.2 hour at the temperature of 530 ℃, taking out the aluminum-based bottom pot blank, and cooling to 40-60 ℃ at room temperature.
5. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 2, wherein the step B3 further comprises:
step B33, spraying non-stick paint on the working surface of the processed aluminum base pot blank, and uniformly spraying the non-stick paint on a mould with the thickness of 20-25 microns;
and step B34, placing the treated aluminum-based bottom pot blank into an oven, firstly sintering at the temperature of 160-180 ℃ for 0.3 hour, then sintering at the temperature of 400-420 ℃ for 0.3 hour, and taking out the aluminum-based bottom pot blank and cooling to room temperature.
6. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 5, wherein the non-stick coating comprises a ground coat and a cover coat, and the ground coat comprises the following chemical components in percentage by weight: 1-2% of epoxy silane, 3-6% of polyether sulfone, 3-6% of polyamide imide, 5-8% of polytetrafluoroethylene, 6-8% of perfluoroethylene propylene copolymer, 2-3% of carbon black, 2-4% of silicon carbide, 3-7% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 30-50% of polytetrafluoroethylene, 1-2% of pearl powder, 1-2% of propylene glycol and the balance of water.
7. The method for manufacturing the enamel sandwich non-stick pan as claimed in claim 6, wherein the weight percentage of each chemical component of the ground glaze meets the following requirements: 1% of epoxy silane, 5% of polyether sulfone, 5% of polyamide imide, 7% of polytetrafluoroethylene, 7% of a perfluoroethylene-propylene copolymer, 2.5% of carbon black, 3% of silicon carbide, 5% of N, N-methyl pyrrolidone and the balance of water; the overglaze comprises the following chemical components in percentage by weight: 40% of polytetrafluoroethylene, 1% of pearl powder, 2% of propylene glycol and the balance of water.
8. The method for manufacturing the enamel sandwich non-stick pan according to claim 1, wherein the non-stick material comprises graphene or graphite oxide uniformly doped therein, and the doping ratio of the graphene or the graphite oxide is 1:1000-6:1000 based on the mass of the non-stick material.
CN202011328407.9A 2020-11-24 2020-11-24 Method for manufacturing enamel interlayer non-stick pan Withdrawn CN112515461A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN113083641A (en) * 2021-04-12 2021-07-09 宁波柏世嘉厨具有限公司 Enamel interlayer non-stick pan and preparation method thereof
CN113974421A (en) * 2021-11-11 2022-01-28 中山市晋盈电器有限公司 Preparation method of wear-resistant inner container for electric cooker
CN114010066A (en) * 2021-11-11 2022-02-08 中山市晋盈电器有限公司 IH inner container for electric cooker and preparation method thereof
CN115260846A (en) * 2022-08-19 2022-11-01 江西中氟化学材料科技股份有限公司 Modified fluororesin aqueous dispersion for forming coating and preparation method thereof
CN115368029A (en) * 2022-08-22 2022-11-22 四川华翔玻陶制品有限公司 Glazing method for gold-sandwiched glaze of glass container

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113083641A (en) * 2021-04-12 2021-07-09 宁波柏世嘉厨具有限公司 Enamel interlayer non-stick pan and preparation method thereof
CN113974421A (en) * 2021-11-11 2022-01-28 中山市晋盈电器有限公司 Preparation method of wear-resistant inner container for electric cooker
CN114010066A (en) * 2021-11-11 2022-02-08 中山市晋盈电器有限公司 IH inner container for electric cooker and preparation method thereof
CN115260846A (en) * 2022-08-19 2022-11-01 江西中氟化学材料科技股份有限公司 Modified fluororesin aqueous dispersion for forming coating and preparation method thereof
CN115260846B (en) * 2022-08-19 2023-08-22 江西中氟化学材料科技股份有限公司 Coating-forming modified fluororesin aqueous dispersion liquid and preparation method thereof
CN115368029A (en) * 2022-08-22 2022-11-22 四川华翔玻陶制品有限公司 Glazing method for gold-sandwiched glaze of glass container

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