A non-stick pan manufacturing process and non-stick pan

Abstract

The application belongs to the technical field of kitchen utensils, and discloses a non-stick pot manufacturing process and a non-stick pot. The non-stick pot manufacturing process comprises the following steps: predefining a pattern, etching treatment, primer non-stick coating spraying treatment, and then naturally air drying to form a primer coating; polishing treatment, humidification treatment, and surface oil non-stick coating spraying; the preparation process of the primer non-stick coating comprises mixing water, glycerol, nano silicon, nano iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecyl benzene sulfonate, polydimethylsiloxane, and diisopropyl peroxydicarbonate to form the primer non-stick coating; and the preparation process of the surface oil non-stick coating comprises water, nano carbon powder, nano silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxydicarbonate to form the surface oil non-stick coating. The non-stick coating on the surface of the non-stick pot prepared by the manufacturing process has good adhesion and wear resistance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of kitchen utensils, and particularly relates to a non-stick pot manufacturing process and a non-stick pot. BACKGROUND

[0002] The non-stick pot sold on the market will have phenomena such as scratching, dirt, blackening, etc. after being used for a long time, causing cleaning trouble and greatly weakening the non-stick performance. Therefore, a non-stick pot with concave-convex patterns is introduced on the market, which increases the heat absorption area of the product, quickly transmits heat, has a long service life, and has the purpose of facilitating cleaning.

[0003] However, the non-stick coating spraying process of the non-stick pot with concave-convex patterns is to directly spray the primer non-stick coating on the pot body blank, then send it into a drying machine for drying treatment, then polish the position of the convex pattern with sandpaper, so that the position of the convex pattern is not protected by the non-stick coating, and finally spray the topcoat non-stick coating on the pot body blank. Since the primer coating is protected by the complete topcoat coating, it achieves the effect of long-lasting and full-screen non-stick. However, since the primer non-stick coating is subjected to drying treatment at the beginning, the primer non-stick coating hardens, which not only increases the difficulty of the subsequent polishing process, but also reduces the adhesion of the topcoat non-stick coating to the primer coating after spraying, so that the non-stick coating on the concave pattern position is still prone to falling off during long-term use, and the wear resistance is also poor. Moreover, the impact resistance of the existing non-stick coating on the surface of the non-stick pot needs to be improved.

[0004] Therefore, it is urgent to provide a new non-stick pot manufacturing process, so that the non-stick coating on the surface of the non-stick pot has good adhesion, wear resistance, and further has good impact resistance. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a non-stick pot manufacturing process and a non-stick pot, wherein the non-stick coating on the surface of the non-stick pot prepared by the manufacturing process has good adhesion and wear resistance, and further has good impact resistance, thereby greatly improving the use effect and service life of the non-stick pot.

[0006] The application concept of the application is that the application uses special bottom oil non-stick paint to be coated with special surface oil non-stick paint to jointly build a non-stick pot coating with superior performance. The preparation process of the application uses natural air drying after the bottom oil non-stick paint is coated, compared with the drying treatment in the existing technology, which effectively prevents the hardening of the bottom oil non-stick paint and reduces the difficulty of the subsequent polishing process. In addition, the surface of the pot blank is treated with moisture before the surface oil non-stick paint is coated, which softens the bottom oil non-stick paint coating and facilitates the combination with the subsequent surface oil non-stick paint. This treatment effectively solves the problem of peeling of the non-stick pot coating during long-term use, greatly improving the non-stick performance, service life and aesthetic degree of the pot.

[0007] The bottom oil non-stick paint of the application is prepared by water, glycerol, nano silicon, nano iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecyl benzene sulfonate, polydimethylsiloxane and diisopropyl peroxydicarbonate, and the surface oil non-stick paint is prepared by water, nano carbon powder, nano silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane and diisopropyl peroxydicarbonate. The bottom oil coating and the surface oil coating both contain iron and silicon elements, and both use the method of modifying specific organic and inorganic components with silane coupling agent, which increases the compatibility of each component and further improves the wear resistance and impact resistance of the surface oil coating.

[0008] The first aspect of the application provides a non-stick pot manufacturing process.

[0009] Specifically, a non-stick pot manufacturing process includes the following steps:

[0010] S1, silk screen printing ink of a predetermined pattern on the surface of the pot blank, and then drying and curing;

[0011] S2, etching the surface of the pot blank without silk screen printing ink by etching process to form concave and convex patterns on the surface of the pot blank, cleaning, drying, then stretching by stamping, degreasing and sandblasting;

[0012] S3, preheating the pot blank treated in step S2, then spraying the bottom oil non-stick paint on the surface of the pot blank, and then naturally drying to form a bottom oil coating;

[0013] S4, polishing the raised pattern positions on the surface of the pot blank treated in step S3 so that the raised pattern positions have no bottom oil coating;

[0014] S5, preheating the pot blank treated in step S4 and then treating the surface with moisture;

[0015] S6, the surface of the pot body blank treated in step S5 is sprayed with a surface oil non-stick coating to form a surface oil coating layer, and dried to obtain the non-stick pot;

[0016] The preparation process of the surface oil non-stick coating comprises mixing water, nanometer carbon powder, nanometer silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane and diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0017] The preparation process of the surface oil non-stick coating comprises mixing water, nanometer carbon powder, nanometer silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane and diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0018] Preferably, the preparation process of the surface oil non-stick coating comprises mixing, by weight, 40-60 parts of water, 5-10 parts of glycerol, 0.5-2 parts of nanometer silicon, 0.5-3 parts of nanometer iron oxide, 5-15 parts of polytetrafluoroethylene, 1-8 parts of silane coupling agent, 1-8 parts of sodium dodecyl benzene sulfonate, 1-3 parts of polydimethylsiloxane and 1-5 parts of diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0019] Further preferably, the preparation process of the surface oil non-stick coating comprises mixing, by weight, 45-55 parts of water, 6-10 parts of glycerol, 1.1-1.8 parts of nanometer silicon, 1.5-2 parts of nanometer iron oxide, 5-15 parts of polytetrafluoroethylene, 2-8 parts of silane coupling agent, 1-5 parts of sodium dodecyl benzene sulfonate, 1-3 parts of polydimethylsiloxane and 1-5 parts of diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0020] Preferably, the preparation process of the surface oil non-stick coating comprises mixing, by weight, 30-50 parts of water, 0.8-3 parts of nanometer carbon powder, 2-8 parts of nanometer silicon dioxide, 2-8 parts of silane coupling agent, 2-12 parts of polyethylene glycol, 5-15 parts of polytetrafluoroethylene, 1-3 parts of polydimethylsiloxane and 1-5 parts of diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0021] Further preferably, the preparation process of the surface oil non-stick coating comprises mixing, by weight, 35-45 parts of water, 0.8-1.8 parts of nanometer carbon powder, 2-5 parts of nanometer silicon dioxide, 2-6 parts of silane coupling agent, 4-12 parts of polyethylene glycol, 5-15 parts of polytetrafluoroethylene, 1-3 parts of polydimethylsiloxane and 1-5 parts of diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

[0022] Preferably, the surface oil does not contain 0.1-0.3 parts of graphene oxide in the paint. The addition of graphene oxide interacts with other components in the surface oil non-stick paint, further improving the wear resistance of the coating.

[0023] Preferably, the stirring speed is 1000-3000 rpm, and the stirring time is 10-30 minutes; further preferably, the stirring speed is 1500-2500 rpm, and the stirring time is 10-30 minutes.

[0024] Preferably, the temperature during stirring is 25-35℃, and further preferably 28-35℃.

[0025] Preferably, the bottom oil non-stick paint also includes pigments for forming various desired color non-stick layer color, thereby further improving the appearance.

[0026] Preferably, in step S1, the pot body blank is made of steel, and further preferably is a three-layer steel composite flat blank, with the outer and inner layers being stainless steel and the middle layer being aluminum alloy composite. Because the aluminum alloy in the middle layer conducts heat quickly and uniformly, it uniformly transmits heat to the inner layer of stainless steel, so that the food can be heated uniformly during cooking, achieving the effect of smokeless.

[0027] Preferably, in step S1, the described predetermined pattern is a uniform matrix distribution of polygonal patterns, such as square, hexagonal, and other honeycomb patterns.

[0028] Preferably, in step S2, the etching depth is 0.1-0.3mm, which allows the inner surface of the pot body to have multiple independent or non-independent oil grooves. When the cooking oil in the pot is heated, the oil stored in these oil grooves is heated to boiling, and the food is slightly floating after being supported by the dispersed and boiling oil. Since the food does not directly contact the bottom of the pot, the effect of effectively preventing sticking is achieved. The stretching in step S2 is a conventional operation in the art to form the desired shape of the pot body.

[0029] Preferably, in step S2, the oil removal refers to sintering the residual oil and fat of the pot body blank in a high-temperature furnace at 150-450℃, which also helps to remove the dirt left by the stretching of the surface of the pot body blank.

[0030] Preferably, in step S2, the sandblasting thickness is 0.3-4.5μm; this process mainly performs high-pressure sandblasting on the inner surface of the pot body blank, and the materials used for sandblasting are one or more of quartz sand, brown corundum, river sand, glass beads, and steel beads; the particle size of the materials used is 38-180 mesh; this process mainly improves the fatigue resistance of the blank, increases the adhesion between the blank and the coating, prolongs the durability of the coating, and is also beneficial to the leveling and decoration of the coating.

[0031] Preferably, in step S3, the pre-heating temperature is 30-150℃, and the pre-heating time is 3-30 minutes; further preferably, the pre-heating temperature is 90-100℃, and the pre-heating time is 12-15 minutes.

[0032] Preferably, in step S3, the primer coating is formed by spraying the primer non-stick coating, and the thickness of the primer coating is 12-35μm; further preferably, the thickness is 15-30μm; more preferably, the thickness is 18-20μm.

[0033] In step S3, compared with the drying in an existing drying machine, the natural air drying effectively prevents the primer coating from hardening, and reduces the difficulty of the subsequent polishing process.

[0034] Preferably, in step S4, the protruding pattern position on the surface of the pot blank is polished by using 80-320 mesh sandpaper, so that the protruding pattern position is free of primer coating, and the decoration effect of the protruding pattern is highlighted; preferably, 200-250 mesh sandpaper is used for polishing. Since the primer coating does not harden due to the natural air drying, the polishing process is easier, and the polishing effect is more thorough.

[0035] Preferably, in step S5, the surface of the pot blank is subjected to a humidification treatment, so that the humidity of the surface of the pot blank reaches 85-95%; further preferably, the humidity is 85-90%. The humidification treatment softens the primer coating, and facilitates the combination with the subsequent top primer non-stick coating.

[0036] Preferably, in step S6, the top primer non-stick coating is formed by spraying the top primer non-stick coating, and the thickness of the top primer coating is 12-35μm; further preferably, the thickness is 15-30μm; more preferably, the thickness is 18-20μm. This treatment protects the entire pot blank product, whether it is a recessed pattern or a protruding pattern, with the non-stick coating, and increases the non-stick property of the product.

[0037] Preferably, in step S6, the drying temperature is 40-100℃, and the drying time is 10-30 minutes; further preferably, the drying temperature is 70-75℃, and the drying time is 15-20 minutes. This step mainly combines the top primer non-stick coating with the primer non-stick coating, thereby solving the problem of peeling of the non-stick coating of the non-stick pot during long-term use.

[0038] The second aspect of the present application provides a non-stick pot.

[0039] A non-stick pot is prepared by the above preparation method.

[0040] Compared with the prior art, the present application has the following advantages:

[0041] (1) The present application uses special bottom oil non-stick paint and special surface oil non-stick paint to form a non-stick coating with excellent performance. The preparation process of the present application uses natural air drying after coating the bottom oil non-stick paint, which effectively prevents the hardening of the bottom oil non-stick paint compared to the existing technology of sending it into a drying machine for drying treatment, reducing the difficulty of subsequent polishing process. In addition, the surface of the pot blank is treated with moisture before coating the surface oil non-stick paint. This treatment softens the bottom oil non-stick paint coating, making it easier to combine with the subsequent surface oil non-stick paint. This treatment effectively solves the problem of peeling of the non-stick coating during long-term use, greatly improving the non-stick performance, service life and aesthetics of the pot.

[0042] (2) The bottom oil non-stick paint of the present application is prepared by water, glycerol, nano silicon, nano iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecyl benzene sulfonate, polydimethylsiloxane, and diisopropyl peroxydicarbonate. The surface oil non-stick paint is prepared by water, nano carbon powder, nano silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxydicarbonate. The bottom oil coating and the surface oil coating both contain iron and silicon elements, and both use silane coupling agent to modify specific organic and inorganic components, increasing the compatibility of each component and further improving the wear resistance and impact resistance of the surface oil coating.

[0043] (3) The surface oil non-stick paint also contains 0.1-0.3 parts of graphene oxide. The addition of graphene oxide interacts with other components in the surface oil non-stick paint, further improving the wear resistance of the coating. DETAILED DESCRIPTION

[0044] In order to make the skilled in the art more clearly understand the technical solutions of the present application, the following examples are given for illustration. It should be noted that the following examples do not limit the scope of protection required by the present application.

[0045] The raw materials, reagents or devices used in the following examples are commercially available or can be obtained by known methods unless otherwise specified.

[0046] Example 1

[0047] A non-stick pot making process, comprising the following steps:

[0048] S1, silk screen printing ink with predetermined pattern (hexagonal honeycomb pattern) on the surface of the pot blank (three-layer steel composite flat blank, outer layer and inner layer are stainless steel, middle layer is aluminum alloy composite), then drying and curing (this step is a conventional process in the art);

[0049] S2, etching process is used to etch the position without the silk screen ink on the S1 pot body blank (the etching depth is 0.2±0.1mm, and the etching treatment is a conventional process in the art), so that the surface of the pot body blank forms a concave-convex pattern, and then the pot body blank is cleaned, dried, subjected to stamping and drawing, oil removal (350℃), and sand blasting (the thickness of the sand blasting treatment is 0.35μm; the material used for the sand blasting treatment is quartz sand with a particle size of 150 mesh);

[0050] S3, the pot body blank treated in step S2 is subjected to preheating treatment (the preheating temperature is 60℃, and the treatment time is 8 minutes), and then the pot body blank is subjected to bottom oil non-stick coating spraying treatment, and then naturally air dried to form a bottom oil coating layer with a thickness of 20μm;

[0051] S4, the surface of the pot body blank treated in step S3 is subjected to polishing treatment (polishing treatment is performed using 250 mesh sandpaper) to remove the bottom oil coating layer from the convex pattern position;

[0052] S5, the pot body blank treated in step S4 is subjected to preheating and then surface humidification treatment (the preheating temperature is 40℃, and the surface humidity of the pot body blank is 90%);

[0053] S6, the surface of the pot body blank treated in step S5 is subjected to face oil non-stick coating spraying to form a face oil coating layer with a thickness of 20μm, and then dried at a temperature of 75℃ for 20 minutes to obtain the non-stick pot;

[0054] The preparation process of the bottom oil non-stick coating includes stirring and mixing 45 parts of water, 6 parts of glycerol, 1 part of nano silicon, 1.2 parts of nano iron oxide, 10 parts of polytetrafluoroethylene, 3 parts of silane coupling agent KH560, 1.5 parts of sodium dodecyl benzene sulfonate, 1 part of polydimethylsiloxane, and 2 parts of diisopropyl peroxydicarbonate at a stirring speed of 1800 revolutions per minute for 15 minutes to form the bottom oil non-stick coating;

[0055] The preparation process of the face oil non-stick coating includes stirring and mixing 40 parts of water, 1.2 parts of nano carbon powder, 2.1 parts of nano silicon dioxide, 5 parts of silane coupling agent KH560, 6 parts of polyethylene glycol, 8 parts of polytetrafluoroethylene, 1.5 parts of polydimethylsiloxane, and 2 parts of diisopropyl peroxydicarbonate at a stirring speed of 2000 revolutions per minute for 15 minutes to form the face oil non-stick coating.

[0056] Example 2

[0057] A non-stick pot manufacturing process includes the following steps:

[0058] S1, silk screen printing ink of a predetermined pattern (a quadrilateral pattern) on the surface of a pot body blank (a three-layer steel composite flat blank, outer and inner layers of stainless steel, and an intermediate layer of aluminum alloy composite), and then drying and curing (this step is a conventional process in the art);

[0059] S2, etching the surface of the pot body blank of S1 at positions without silk screen printing ink by an etching process (the etching depth is 0.1±0.1 mm, and the etching process is a conventional process in the art), so that the surface of the pot body blank forms a concave-convex pattern, cleaning, drying, then stamping and drawing, oil removal (380°C), and sand blasting (the thickness of the sand blasting is 0.30 μm, and the material used for the sand blasting is quartz sand with a particle size of 150 mesh);

[0060] S3, preheating the pot body blank treated in step S2 (the preheating temperature is 70°C, and the preheating time is 10 minutes), then performing a primer non-stick coating spray treatment on the pot body blank, and then naturally air drying to form a primer coating layer with a thickness of 20 μm;

[0061] S4, polishing the surface of the pot body blank treated in step S3 at the positions of the raised pattern (polishing is performed using sandpaper with a mesh size of 250), so that the positions of the raised pattern are free of the primer coating layer;

[0062] S5, preheating the pot body blank treated in step S4 and then performing a surface wetting treatment on the surface thereof (the preheating temperature is 50°C, and the surface humidity of the pot body blank is 95%);

[0063] S6, performing a surface oil non-stick coating spray on the surface of the pot body blank treated in step S5 to form a surface oil coating layer with a thickness of 18 μm, and then drying (the drying temperature is 75°C, and the drying time is 20 minutes), to obtain the non-stick pot;

[0064] The preparation process of the primer non-stick coating includes, stirring and mixing 45 parts of water, 5 parts of glycerol, 1.2 parts of nano silicon, 1.5 parts of nano iron oxide, 9 parts of polytetrafluoroethylene, 2.5 parts of silane coupling agent KH560, 1.8 parts of sodium dodecylbenzenesulfonate, 1.2 parts of polydimethylsiloxane, and 2 parts of diisopropyl peroxydicarbonate at a weight ratio of 2000 revolutions / minute for 12 minutes, to form the primer non-stick coating;

[0065] The preparation process of the surface oil non-stick coating includes stirring and mixing 45 parts of water, 1.4 parts of nano carbon powder, 2.3 parts of nano silicon dioxide, 5.2 parts of silane coupling agent KH560, 6.5 parts of polyethylene glycol, 8.5 parts of polytetrafluoroethylene, 1.6 parts of polydimethylsiloxane, and 2.1 parts of diisopropyl peroxydicarbonate according to the weight ratio, the stirring speed is 2200 revolutions / minute, and the stirring time is 12 minutes, to form the surface oil non-stick coating.

[0066] Example 3

[0067] A non-stick pan manufacturing process, comprising the following steps:

[0068] S1, silk screen printing an ink with a predetermined pattern (hexagonal honeycomb pattern) on the surface of a pan blank (three-layer steel composite flat blank, the outer layer and the inner layer are stainless steel, and the middle layer is aluminum alloy composite), and then drying and curing (this step belongs to the conventional process in the art);

[0069] S2, etching the surface of the pan blank without silk screen printing ink by using an etching process (the etching depth is 0.2±0.1mm, and the etching process belongs to the conventional process in the art), so that the surface of the pan blank forms a concave-convex pattern, and then cleaning, drying, stretching by stamping, oil removal (350℃), and sand blasting treatment (the thickness of the sand blasting treatment is 0.35μm; the material used for the sand blasting treatment is brown corundum with a particle size of 150 mesh);

[0070] S3, preheating the pan blank treated in step S2 (the preheating temperature is 60℃, and the preheating time is 8 minutes), then spraying a bottom oil non-stick coating on the surface of the pan blank, and then naturally air drying to form a bottom oil coating layer with a thickness of 20μm;

[0071] S4, polishing the raised pattern positions on the surface of the pan blank treated in step S3 (polishing treatment is performed by using 250 mesh sandpaper), so that the raised pattern positions are free of the bottom oil coating;

[0072] S5, preheating the pan blank treated in step S4 and then performing a humidification treatment on the surface thereof (the preheating temperature is 40℃, and the surface humidity of the pan blank is 90%);

[0073] S6, spraying a surface oil non-stick coating on the surface of the pan blank treated in step S5 to form a surface oil coating layer with a thickness of 20μm, and then drying at a temperature of 75℃ for 20 minutes to obtain the non-stick pan;

[0074] The preparation process of the primer non-stick coating includes, according to the weight ratio, stirring and mixing 40 parts of water, 5 parts of glycerol, 0.8 parts of nano silicon, 1.6 parts of nano iron oxide, 11 parts of polytetrafluoroethylene, 3.5 parts of silane coupling agent KH560, 1.8 parts of sodium dodecyl benzene sulfonate, 1 part of polydimethylsiloxane, and 2.5 parts of diisopropyl peroxydicarbonate, the stirring speed is 1800 revolutions per minute, the stirring time is 15 minutes, and the primer non-stick coating is formed;

[0075] The preparation process of the surface oil non-stick coating includes, according to the weight ratio, stirring and mixing 40 parts of water, 1.6 parts of nano carbon powder, 2.5 parts of nano silicon dioxide, 5.5 parts of silane coupling agent KH560, 7 parts of polyethylene glycol, 8.5 parts of polytetrafluoroethylene, 1.5 parts of polydimethylsiloxane, and 2.5 parts of diisopropyl peroxydicarbonate, the stirring speed is 2000 revolutions per minute, the stirring time is 15 minutes, and the surface oil non-stick coating is formed.

[0076] Example 4

[0077] A non-stick pan manufacturing process includes the following steps:

[0078] S1, silk screen printing ink with a predetermined pattern (hexagonal honeycomb pattern) on the surface of the pan body blank (three-layer steel composite flat blank, outer layer and inner layer are stainless steel, and the middle layer is aluminum alloy composite), and then drying and curing (this step belongs to the conventional process in the art);

[0079] S2, etching the surface of the pan body blank without silk screen printing ink by etching process (the etching depth is 0.2±0.1mm, and the etching process belongs to the conventional process in the art), so that the surface of the pan body blank forms a concave-convex pattern, and then cleaning, drying, stretching, oil removal (350℃), and sand blasting (the thickness of sand blasting is 0.35μm; the material used for sand blasting is quartz sand with a particle size of 150 mesh);

[0080] S3, preheating the pan body blank treated in step S2 (the preheating temperature is 60℃, and the preheating time is 8 minutes), then spraying primer non-stick coating on the surface of the pan body blank, and then naturally air drying to form a primer coating with a thickness of 20μm;

[0081] S4, polishing the raised pattern position on the surface of the pan body blank treated in step S3 (polishing with 250 mesh sandpaper), so that the raised pattern position has no primer coating;

[0082] S5, preheating the pan body blank treated in step S4 and then performing humidification treatment on its surface (the preheating temperature is 50℃, and the surface humidity of the pan body blank is 90%);

[0083] S6, the surface of the pot body blank treated in step S5 is sprayed with a surface oil non-stick coating to form a surface oil coating, the thickness of the bottom oil coating is 20 microns, drying is performed at a temperature of 75 degrees Celsius for 20 minutes, and the non-stick pot is obtained;

[0084] The preparation process of the bottom oil non-stick coating includes stirring and mixing 45 parts of water, 6 parts of glycerol, 1 part of nano silicon, 1.2 parts of nano iron oxide, 10 parts of polytetrafluoroethylene, 3 parts of silane coupling agent KH560, 1.5 parts of sodium dodecyl benzene sulfonate, 1 part of polydimethylsiloxane, and 2 parts of diisopropyl peroxydicarbonate at a stirring speed of 1800 revolutions per minute for 15 minutes to form the bottom oil non-stick coating.

[0085] The preparation process of the surface oil non-stick coating includes stirring and mixing 40 parts of water, 1.2 parts of nano carbon powder, 2.1 parts of nano silicon dioxide, 5 parts of silane coupling agent KH560, 6 parts of polyethylene glycol, 8 parts of polytetrafluoroethylene, 1.5 parts of polydimethylsiloxane, 2 parts of diisopropyl peroxydicarbonate, and 0.15 parts of graphene oxide at a stirring speed of 2000 revolutions per minute for 15 minutes to form the surface oil non-stick coating.

[0086] Comparative Example 1

[0087] In Comparative Example 1, the same amount of nano iron oxide is used to replace the nano silicon in the preparation process of the bottom oil non-stick coating in Example 1, and the remaining components and processes are the same as in Example 1.

[0088] Comparative Example 2

[0089] In Comparative Example 2, the same amount of nano silicon dioxide is used to replace the nano carbon powder in the preparation process of the surface oil non-stick coating in Example 1, and the remaining components and processes are the same as in Example 1.

[0090] Comparative Example 3

[0091] In Comparative Example 3, the same amount of polyethylene glycol is used to replace the silane coupling agent KH560 in the preparation process of the bottom oil non-stick coating and the surface oil non-stick coating in Example 1, and the remaining components and processes are the same as in Example 1.

[0092] Comparative Example 4

[0093] In Comparative Example 4, the drying at 60 degrees Celsius in step S3 is replaced by natural air drying compared to Example 1, and the remaining components and processes are the same as in Example 1.

[0094] Comparative Example 5

[0095] In Comparative Example 5, the humidification treatment in step S5 is omitted compared to Example 1, and the remaining components and processes are the same as in Example 1.

[0096] Product effect test

[0097] The non-stick pots prepared from Example 1, Example 4, Comparative Examples 1-5 were subjected to adhesion, abrasion resistance and impact resistance tests of the coating layer formed on the surface of the non-stick pot, wherein the adhesion was tested according to the GB / T9286-1998 standard; the abrasion resistance was tested according to the GB / T1768-1979 standard, and the weight loss of the coating layer after 200 rounds of grinding under the load of 300g weight was taken as the abrasion resistance index, the smaller the weight loss, the better the abrasion resistance; the impact resistance was tested according to the GB / T1732-93 standard. The specific results are shown in Table 1.

[0098] Table 1

[0099] adhesion weight loss (g) of the coating impact resistance (kg x cm) example 1 0 grade 0.0008 290 example 4 0 grade 0.0006 312 comparative example 1 1 grade 0.0015 281 comparative example 2 2 grade 0.0020 265 comparative example 3 2 grade 0.0036 247 comparative example 4 2 grade 0.0032 261 comparative example 5 2 grade 0.0025 272

[0100] As can be seen from Table 1, the coating layer on the surface of the non-stick pot prepared by the examples of the present application has significantly better adhesion, abrasion resistance and impact resistance than Comparative Examples 1-3.

[0101] As can be seen from the results of Comparative Example 1 and Example 1, when an equal amount of nano iron oxide is used to replace nano silicon in the preparation process of the base oil non-stick coating, although the influence on the adhesion of the coating layer is small, it has a significant adverse effect on the abrasion resistance and impact resistance of the coating layer. The reason may be that the lack of nano silicon weakens the bonding strength between the base oil coating layer and the surface oil coating layer, making it more prone to loss of the surface oil coating layer.

[0102] As can be seen from the results of Comparative Example 2 and Example 1, the nano carbon powder in the surface oil non-stick coating can significantly improve the adhesion, abrasion resistance and impact resistance when it interacts with other components (organic and inorganic materials).

[0103] As can be seen from the results of Comparative Example 3 and Example 1, the silane coupling agent KH560 cannot be replaced by other general organic materials (polyethylene glycol), and the silane coupling agent KH560 plays a decisive role in the fusion of the components in the coating layer, thereby having a great influence on the adhesion, abrasion resistance and impact resistance of the coating layer.

[0104] As can be seen from the results of Comparative Examples 4-5 and Example 1, natural air drying and humidification treatment can significantly help improve the adhesion, abrasion resistance and impact resistance of the coating layer.

[0105] As can be seen from the results of Example 1 and Example 4, the appropriate addition of graphene oxide can improve the abrasion resistance and impact resistance of the coating layer.

[0106] In summary, in the preparation process of the primer non-stick coating and the surface oil non-stick coating, the components interact with each other, so that the adhesion, wear resistance and impact resistance of the coating are improved, and part of the components cannot be simply replaced.

[0107] The above other embodiments have similar effects to embodiment 1, and will not be described here.

[0108] It should be pointed out that the above embodiments are only part of the implementation manners of the present application, and do not constitute a limitation on the scope of protection of the present application. Within the scope of protection of the present application, appropriate changes in process parameters or component amounts can also achieve similar effects to embodiment 1.

Claims

1. A non-stick pan manufacturing process characterized in that, It comprises the following steps: S1, silk screen printing ink of predetermined pattern on the surface of the pot blank, and then drying and curing; S2, using etching process to etch the position without silk screen printing ink on the surface of the pot blank in S1, so that the surface of the pot blank forms concave and convex patterns, cleaning, drying, then stamping and stretching, degreasing, and sand blasting; S3, preheating the pot blank treated in step S2, then spraying bottom oil non-stick coating on the surface of the pot blank, and then naturally drying to form a bottom oil coating; S4, polishing the raised pattern position on the surface of the pot blank treated in step S3; S5, preheating the pot blank treated in step S4, and then spraying surface oil non-stick coating on the surface of the pot blank; S6, spraying surface oil non-stick coating on the surface of the pot blank treated in step S5 to form a surface oil coating, and then drying to obtain the non-stick pot; The preparation process of the bottom oil non-stick coating comprises mixing water, glycerol, nano silicon, nano iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecyl benzene sulfonate, polydimethylsiloxane, and diisopropyl peroxydicarbonate to form the bottom oil non-stick coating; The preparation process of the surface oil non-stick coating comprises mixing water, nano carbon powder, nano silicon dioxide, silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxydicarbonate to form the surface oil non-stick coating; The preparation process of the bottom oil non-stick coating comprises mixing, according to weight ratio, 40-60 parts of water, 5-10 parts of glycerol, 0.5-2 parts of nano silicon, 0.5-3 parts of nano iron oxide, 5-15 parts of polytetrafluoroethylene, 1-8 parts of silane coupling agent, 1-8 parts of sodium dodecyl benzene sulfonate, 1-3 parts of polydimethylsiloxane, and 1-5 parts of diisopropyl peroxydicarbonate to form the bottom oil non-stick coating; The preparation process of the surface oil non-stick coating comprises mixing, according to weight ratio, 30-50 parts of water, 0.8-3 parts of nano carbon powder, 2-8 parts of nano silicon dioxide, 2-8 parts of silane coupling agent, 2-12 parts of polyethylene glycol, 5-15 parts of polytetrafluoroethylene, 1-3 parts of polydimethylsiloxane, and 1-5 parts of diisopropyl peroxydicarbonate to form the surface oil non-stick coating.

2. The non-stick pan fabrication process of claim 1, wherein, The surface oil non-stick coating further comprises 0.1-0.3 parts of graphene oxide.

3. The non-stick pan fabrication process of claim 1, wherein, The bottom oil non-stick coating further comprises pigments.

4. The non-stick pan fabrication process of claim 1, wherein, In step S3, the thickness of the bottom oil coating is 12-35 μm.

5. The non-stick pan fabrication process of claim 1, wherein, In step S5, the surface of the pot blank is treated by humidification, so that the humidity of the surface of the pot blank reaches 85-95%.

6. The non-stick pan fabrication process of claim 1, wherein, In step S6, the thickness of the surface oil coating is 12-35 μm.

7. The non-stick pan fabrication process of claim 1, wherein, In step S6, the drying temperature is 40-100℃, and the drying time is 10-30 minutes.

8. A non-stick pan characterized in that, The non-stick pot is prepared by the process of any one of claims 1-7.