Non-stick pan manufacturing process and non-stick pan

Abstract

The invention belongs to the technical field of kitchen ware, and discloses a non-stick pan manufacturing process and a non-stick pan. The manufacturing process of the non-stick pan comprises the following steps: presetting a floral pattern, carrying out etching treatment, carrying out base oil non-stick coating spraying treatment, and then carrying out natural wind drying to form a base oil coating; polishing treatment, humidification treatment and surface oil non-stick coating spraying are carried out; the preparation process of the base oil non-stick coating comprises the following steps: mixing water, glycerol, nano silicon, nano iron oxide, polytetrafluoroethylene, a silane coupling agent, sodium dodecyl benzene sulfonate, polydimethylsiloxane and diisopropyl peroxydicarbonate to form the base oil non-stick coating; the surface oil non-stick coating is prepared from water, nano carbon powder, nano silicon dioxide, a silane coupling agent, sodium dodecyl benzene sulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane and diisopropyl peroxydicarbonate, and the surface oil non-stick coating is formed. The non-stick coating on the surface of the non-stick pan prepared by the manufacturing process has good adhesive force and wear resistance.

Description

[0001] This application is a divisional application with the application date of "2023-11-22", application number "2023115616195", and application title "A non-stick pan manufacturing process and a non-stick pan". Technical Field

[0002] This invention belongs to the field of kitchenware technology, and specifically relates to a non-stick pan manufacturing process and a non-stick pan. Background Technology

[0003] Currently, non-stick pans sold on the market often develop scratches, dirt, and blackening after prolonged use, making cleaning difficult and significantly reducing their non-stick properties. Therefore, a new type of non-stick pan with a textured surface has been introduced. This design increases the heat absorption area, resulting in faster heat transfer, a longer lifespan, and easier cleaning.

[0004] However, current non-stick coating application processes for textured non-stick pans involve directly spraying a base coat of non-stick coating onto the pan body, then drying it in a dryer. Next, the raised textured areas are polished with sandpaper, leaving them unprotected by the non-stick coating. Finally, a top coat of non-stick coating is applied. Because the base coat is protected by the top coat, a long-lasting, full-coverage non-stick effect is achieved. However, the initial drying process causes the base coat to harden. This hardening not only increases the difficulty of subsequent polishing but also reduces the adhesion between the top coat and the base coat. Consequently, the non-stick coating on the textured areas is prone to peeling off over time, and its wear resistance also decreases. Furthermore, the impact resistance of existing non-stick coatings on non-stick pans needs improvement.

[0005] Therefore, there is an urgent need to provide a new non-stick pan manufacturing process that enables the non-stick coating on the surface of the pan to have good adhesion, wear resistance, and further, good impact resistance. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a non-stick pan manufacturing process and a non-stick pan. The non-stick coating on the surface of the non-stick pan prepared by the manufacturing process has good adhesion and wear resistance, and further, good impact resistance, thereby greatly improving the performance and service life of the non-stick pan.

[0007] The inventive concept of this invention is as follows: This invention uses a special base oil non-stick coating in conjunction with a specific top oil non-stick coating to jointly construct a high-performance non-stick pan coating. The preparation process of this invention involves natural air drying after the base oil non-stick coating is applied. Compared to the drying process in existing technologies, this effectively prevents the base oil non-stick coating from hardening and reduces the difficulty of subsequent polishing processes. Furthermore, the surface of the pan blank is moistened before applying the top oil non-stick coating. This treatment softens the base oil non-stick coating, facilitating its bonding with the subsequent top oil non-stick coating. This treatment effectively solves the problem of non-stick pan coating peeling off during prolonged use, greatly improving the non-stick performance, lifespan, and aesthetics of the pan.

[0008] The base coat non-stick coating of the present invention is prepared by water, glycerin, nano-silicon, nano-iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecylbenzenesulfonate, polydimethylsiloxane, and diisopropyl peroxide. The top coat non-stick coating is prepared by water, nano-carbon powder, nano-silica, silane coupling agent, sodium dodecylbenzenesulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxide. Both the base coat and the top coat contain iron and silicon elements, and both use silane coupling agents to modify specific organic and inorganic components, which increases the compatibility of each component and further improves the wear resistance and impact resistance of the top coat.

[0009] The first aspect of the present invention provides a non-stick pan manufacturing process.

[0010] Specifically, a non-stick pan manufacturing process includes the following steps: S1. Silk screen print the ink with the predetermined pattern onto the surface of the pot body blank, and then dry and cure it; S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched to create a raised pattern on the surface of the pot body blank. After cleaning and drying, the blank is then stamped, stretched, degreased, and sandblasted. S3. The pot body blank processed in step S2 is preheated, then the pot body blank is sprayed with a base oil non-stick coating, and then air-dried to form a base oil coating. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3 so that the raised patterned areas are free of base oil coating. S5. After preheating the pot body blank processed in step S4, humidify its surface. S6. Spray a non-stick coating onto the surface of the pot body blank processed in step S5 to form a surface oil coating, and dry it to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing water, glycerin, nano-silicon, nano-iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecylbenzenesulfonate, polydimethylsiloxane, and diisopropyl peroxide to form a base oil non-stick coating. The preparation process of the non-stick topcoat includes water, nano-carbon powder, nano-silica, silane coupling agent, sodium dodecylbenzenesulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxide to form the non-stick topcoat.

[0011] Preferably, the preparation process of the non-stick topcoat includes, by weight, 30-50 parts water, 0.8-3 parts nano-carbon powder, 2-8 parts nano-silica, 2-8 parts silane coupling agent, 2-12 parts polyethylene glycol, 5-15 parts polytetrafluoroethylene, 1-3 parts polydimethylsiloxane, and 1-5 parts diisopropyl peroxide to form the non-stick topcoat.

[0012] More preferably, the preparation process of the non-stick topcoat includes, by weight, 35-45 parts water, 0.8-1.8 parts nano-carbon powder, 2-5 parts nano-silica, 2-6 parts silane coupling agent, 4-12 parts polyethylene glycol, 5-15 parts polytetrafluoroethylene, 1-3 parts polydimethylsiloxane, and 1-5 parts diisopropyl peroxide to form a non-stick topcoat.

[0013] Preferably, the non-stick coating also contains 0.1-0.3 parts of graphene oxide. The addition of graphene oxide interacts with other components in the non-stick coating to further improve the wear resistance of the coating.

[0014] Preferably, the stirring speed is 1000-3000 rpm and the stirring time is 10-30 minutes; more preferably, the stirring speed is 1500-2500 rpm and the stirring time is 10-30 minutes.

[0015] Preferably, the temperature during stirring is 25-35°C, and more preferably 28-35°C.

[0016] Preferably, the base oil non-stick coating also includes pigments for forming various desired non-stick layer colors, thereby further improving aesthetics.

[0017] Preferably, in step S1, the pot body blank is made of steel, more preferably a three-layer steel composite planar blank, with the outer and inner layers being stainless steel and the middle layer being an aluminum alloy composite. Because the aluminum alloy in the middle layer conducts heat quickly and heats evenly, it transfers heat evenly to the inner stainless steel layer. Since the food is heated evenly during cooking, a smokeless effect is achieved.

[0018] Preferably, in step S1, the predetermined pattern described is a polygonal pattern with a uniform matrix distribution, such as a honeycomb pattern with square or hexagonal shapes.

[0019] Preferably, in step S2, the etching depth is 0.1-0.3 mm. This design results in multiple independent or non-independent oil grooves distributed on the inner surface of the pot. Therefore, when the cooking oil in the pot is heated, the oil stored in these oil grooves is heated to boiling. The food, supported by these dispersed and boiling oil, floats slightly. Since the food does not directly contact the bottom of the pot, it effectively prevents sticking. The stamping and stretching in step S2 forms the desired pot shape, which is a standard procedure in the art.

[0020] Preferably, in step S2, the degreasing refers to sintering the residual grease in the pot body blank in a high-temperature furnace at a temperature of 150-450℃, which also helps to remove the dirt left on the surface of the pot body blank after stretching.

[0021] Preferably, in step S2, the thickness of the sandblasting treatment is 0.3-4.5μm; this treatment mainly involves high-pressure sandblasting of the inner surface of the pot body blank, and the materials used for sandblasting are one or more of the following: 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 its adhesion to the coating, prolongs the durability of the coating film, and is also beneficial to the leveling and decoration of the coating.

[0022] Preferably, in step S3, the preheating temperature is 30-150℃ and the treatment time is 3-30 minutes; more preferably, the preheating temperature is 90-100℃ and the treatment time is 12-15 minutes.

[0023] Preferably, in step S3, the thickness of the base coat formed by the non-stick coating spraying treatment is 12-35 μm; more preferably 15-30 μm; and even more preferably 18-20 μm.

[0024] In step S3, natural air drying, compared with the existing technology of drying in a dryer, effectively prevents the base oil coating from hardening and reduces the difficulty of subsequent polishing processes.

[0025] Preferably, in step S4, the raised patterned areas on the surface of the pot body blank are polished with 80-320 grit sandpaper to remove the base oil coating, thus highlighting the decorative effect of the raised pattern. It is best to use 200-250 grit sandpaper for polishing. Because natural air drying is used, the base oil coating does not harden, making polishing easier and more thorough.

[0026] Preferably, in step S5, the surface of the pot body blank is humidified to achieve a surface humidity of 85-95%; more preferably 85-90%. This humidification treatment softens the base oil coating, making it easier to bond with the subsequent topcoat non-stick coating.

[0027] Preferably, in step S6, the thickness of the non-stick coating formed by the topcoat spraying treatment is 12-35 μm; more preferably 15-30 μm; and even more preferably 18-20 μm. This treatment ensures that the entire pot body blank product, whether the pattern is recessed or raised, is protected by the non-stick coating, increasing the non-stick properties of the product.

[0028] Preferably, in step S6, the drying temperature is 40-100℃ and the drying time is 10-30 minutes; more preferably, the drying temperature is 70-75℃ and the drying time is 15-20 minutes. This step mainly strengthens the bond between the topcoat and the basecoat non-stick coating, thereby solving the problem of non-stick coating peeling off during long-term use.

[0029] A second aspect of the present invention provides a non-stick pan.

[0030] A non-stick pan is prepared by the above-described method.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention uses a special base oil non-stick coating in conjunction with a specific top oil non-stick coating to jointly construct a high-performance non-stick pan coating. The preparation process described in this invention involves natural air drying after the base oil non-stick coating is applied. Compared to the drying process in existing technologies, this effectively prevents the base oil non-stick coating from hardening and reduces the difficulty of subsequent polishing. Furthermore, the surface of the pan blank is humidified before applying the top oil non-stick coating. This treatment softens the base oil non-stick coating, facilitating its bonding with the subsequent top oil non-stick coating. This treatment effectively solves the problem of non-stick pan coating peeling off during long-term use, greatly improving the non-stick performance, lifespan, and aesthetics of the pan.

[0032] (2) The base oil non-stick coating of the present invention is prepared by water, glycerin, nano silicon, nano iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecylbenzenesulfonate, polydimethylsiloxane, and diisopropyl peroxide. The top oil non-stick coating is prepared by water, nano carbon powder, nano silicon dioxide, silane coupling agent, sodium dodecylbenzenesulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxide. The base oil coating and the top oil coating both contain iron and silicon elements, and both use silane coupling agent to modify specific organic and inorganic components, which increases the compatibility of each component and further improves the wear resistance and impact resistance of the top oil coating.

[0033] (3) The non-stick coating also contains 0.1-0.3 parts of graphene oxide. The addition of graphene oxide interacts with other components in the non-stick coating to further improve the wear resistance of the coating. Detailed Implementation

[0034] To enable those skilled in the art to more clearly understand the technical solutions described in this invention, the following embodiments are provided for illustration. It should be noted that the following embodiments do not constitute a limitation on the scope of protection claimed by this invention.

[0035] Unless otherwise specified, the raw materials, reagents or devices used in the following examples are available from conventional commercial sources or can be obtained by existing known methods.

[0036] Example 1 A non-stick pan manufacturing process includes the following steps: S1. Silk screen print a predetermined pattern (hexagonal honeycomb pattern) on the surface of the pot body blank (a three-layer steel composite flat blank, with the outer and inner layers made of stainless steel and the middle layer made of aluminum alloy composite), and then dry and cure it (this step is a conventional process in this field). S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched (the etching depth is 0.2±0.1mm, and etching is a conventional process in this field), so that the surface of the pot body blank is formed with an uneven pattern. After cleaning and drying, it is then stamped, stretched, degreased (at 350℃), and sandblasted (the thickness of the sandblasting is 0.35μm; the material used for sandblasting is quartz sand with a particle size of 150 mesh). S3. The pot body blank processed in step S2 is preheated (the temperature of the preheating treatment is 60℃ and the treatment time is 8 minutes), and then the pot body blank is sprayed with a base oil non-stick coating and then air-dried to form a base oil coating with a thickness of 20μm. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3 (using 250-grit sandpaper) to remove the base oil coating from the raised patterned areas. S5. After preheating the pot body blank processed in step S4, a humidification treatment is performed on its surface (the preheating temperature is 40℃, so that the surface humidity of the pot body blank is 90%). S6. Apply a non-stick coating to the surface of the pot body blank treated in step S5 to form a top oil coating. The thickness of the bottom oil coating is 20μm. Dry it at 75℃ for 20 minutes to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing 45 parts water, 6 parts glycerin, 1 part nano-silicon, 1.2 parts nano-iron oxide, 10 parts polytetrafluoroethylene, 3 parts silane coupling agent KH560, 1.5 parts sodium dodecylbenzenesulfonate, 1 part polydimethylsiloxane, and 2 parts diisopropyl peroxide dicarbonate by weight. The mixing speed is 1800 rpm and the mixing time is 15 minutes to form the base oil non-stick coating. The preparation process of the non-stick topcoat includes mixing 40 parts water, 1.2 parts nano carbon powder, 2.1 parts nano silica, 5 parts silane coupling agent KH560, 6 parts polyethylene glycol, 8 parts polytetrafluoroethylene, 1.5 parts polydimethylsiloxane, and 2 parts diisopropyl peroxide by weight. The mixing speed is 2000 rpm and the mixing time is 15 minutes to form the non-stick topcoat.

[0037] Example 2 A non-stick pan manufacturing process includes the following steps: S1. Silk screen print a predetermined pattern (quadrilateral pattern) of ink on the surface of the pot body blank (a three-layer steel composite flat blank, with the outer and inner layers made of stainless steel and the middle layer made of aluminum alloy composite), and then dry and cure it (this step is a conventional process in this field). S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched (the etching depth is 0.1±0.1mm, and etching is a conventional process in this field), so that the surface of the pot body blank is formed with an uneven pattern. After cleaning and drying, it is then stamped, stretched, degreased (380℃ degreased), and sandblasted (the thickness of the sandblasting is 0.30μm; the material used for sandblasting is quartz sand with a particle size of 150 mesh). S3. The pot body blank processed in step S2 is preheated (the temperature of the preheating treatment is 70℃ and the treatment time is 10 minutes), and then the pot body blank is sprayed with a base oil non-stick coating and then air-dried to form a base oil coating with a thickness of 20μm. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3 (using 250-grit sandpaper) to remove the base oil coating from the raised patterned areas. S5. After preheating the pot body blank processed in step S4, a humidification treatment is performed on its surface (the preheating temperature is 50℃, so that the surface humidity of the pot body blank is 95%). S6. Apply a non-stick coating to the surface of the pot body blank after step S5 to form a top oil coating. The thickness of the bottom oil coating is 18μm. Dry it at 75℃ for 20 minutes to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing 45 parts water, 5 parts glycerin, 1.2 parts nano-silicon, 1.5 parts nano-iron oxide, 9 parts polytetrafluoroethylene, 2.5 parts silane coupling agent KH560, 1.8 parts sodium dodecylbenzenesulfonate, 1.2 parts polydimethylsiloxane, and 2 parts diisopropyl peroxide by weight. The mixing speed is 2000 rpm and the mixing time is 12 minutes to form the base oil non-stick coating. The preparation process of the topcoat non-stick coating includes mixing 45 parts water, 1.4 parts nano carbon powder, 2.3 parts nano silica, 5.2 parts silane coupling agent KH560, 6.5 parts polyethylene glycol, 8.5 parts polytetrafluoroethylene, 1.6 parts polydimethylsiloxane, and 2.1 parts diisopropyl peroxide by weight. The mixing speed is 2200 rpm and the mixing time is 12 minutes to form the topcoat non-stick coating.

[0038] Example 3 A non-stick pan manufacturing process includes the following steps: S1. Silk screen print a predetermined pattern (hexagonal honeycomb pattern) on the surface of the pot body blank (a three-layer steel composite flat blank, with the outer and inner layers made of stainless steel and the middle layer made of aluminum alloy composite), and then dry and cure it (this step is a conventional process in this field). S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched (the etching depth is 0.2±0.1mm, and etching is a conventional process in this field), so that the surface of the pot body blank is formed with an uneven pattern. After cleaning and drying, it is then stamped, stretched, degreased (350℃ degreased), and sandblasted (the thickness of the sandblasting is 0.35μm; the material used for sandblasting is brown corundum with a particle size of 150 mesh). S3. The pot body blank processed in step S2 is preheated (the temperature of the preheating treatment is 60℃ and the treatment time is 8 minutes), and then the pot body blank is sprayed with a base oil non-stick coating and then air-dried to form a base oil coating with a thickness of 20μm. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3 (using 250-grit sandpaper) to remove the base oil coating from the raised patterned areas. S5. After preheating the pot body blank processed in step S4, a humidification treatment is performed on its surface (the preheating temperature is 40℃, so that the surface humidity of the pot body blank is 90%). S6. Apply a non-stick coating to the surface of the pot body blank treated in step S5 to form a top oil coating. The thickness of the bottom oil coating is 20μm. Dry it at 75℃ for 20 minutes to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing 40 parts water, 5 parts glycerin, 0.8 parts nano-silicon, 1.6 parts nano-iron oxide, 11 parts polytetrafluoroethylene, 3.5 parts silane coupling agent KH560, 1.8 parts sodium dodecylbenzenesulfonate, 1 part polydimethylsiloxane, and 2.5 parts diisopropyl peroxide by weight. The mixing speed is 1800 rpm and the mixing time is 15 minutes to form the base oil non-stick coating. The preparation process of the topcoat non-stick coating includes mixing 40 parts water, 1.6 parts nano carbon powder, 2.5 parts nano silica, 5.5 parts silane coupling agent KH560, 7 parts polyethylene glycol, 8.5 parts polytetrafluoroethylene, 1.5 parts polydimethylsiloxane, and 2.5 parts diisopropyl peroxide by weight. The mixing speed is 2000 rpm and the mixing time is 15 minutes to form the topcoat non-stick coating.

[0039] Example 4 A non-stick pan manufacturing process includes the following steps: S1. Silk screen print a predetermined pattern (hexagonal honeycomb pattern) on the surface of the pot body blank (a three-layer steel composite flat blank, with the outer and inner layers made of stainless steel and the middle layer made of aluminum alloy composite), and then dry and cure it (this step is a conventional process in this field). S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched (the etching depth is 0.2±0.1mm, and etching is a conventional process in this field), so that the surface of the pot body blank is formed with an uneven pattern. After cleaning and drying, it is then stamped, stretched, degreased (at 350℃), and sandblasted (the thickness of the sandblasting is 0.35μm; the material used for sandblasting is quartz sand with a particle size of 150 mesh). S3. The pot body blank processed in step S2 is preheated (the temperature of the preheating treatment is 60℃ and the treatment time is 8 minutes), and then the pot body blank is sprayed with a base oil non-stick coating and then air-dried to form a base oil coating with a thickness of 20μm. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3 (using 250-grit sandpaper) to remove the base oil coating from the raised patterned areas. S5. After preheating the pot body blank processed in step S4, a humidification treatment is performed on its surface (the preheating temperature is 50℃, so that the surface humidity of the pot body blank is 90%). S6. Apply a non-stick coating to the surface of the pot body blank treated in step S5 to form a top oil coating. The thickness of the bottom oil coating is 20μm. Dry it at 75℃ for 20 minutes to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing 45 parts water, 6 parts glycerin, 1 part nano-silicon, 1.2 parts nano-iron oxide, 10 parts polytetrafluoroethylene, 3 parts silane coupling agent KH560, 1.5 parts sodium dodecylbenzenesulfonate, 1 part polydimethylsiloxane, and 2 parts diisopropyl peroxide dicarbonate by weight. The mixing speed is 1800 rpm and the mixing time is 15 minutes to form the base oil non-stick coating. The preparation process of the topcoat non-stick coating includes mixing 40 parts water, 1.2 parts nano carbon powder, 2.1 parts nano silica, 5 parts silane coupling agent KH560, 6 parts polyethylene glycol, 8 parts polytetrafluoroethylene, 1.5 parts polydimethylsiloxane, 2 parts diisopropyl peroxide, and 0.15 parts graphene oxide by weight. The mixing speed is 2000 rpm and the mixing time is 15 minutes to form the topcoat non-stick coating.

[0040] Comparative Example 1 Compared with Example 1, in Comparative Example 1, an equal amount of nano-iron oxide was used to replace the nano-silicon in Example 1 during the preparation of the base oil non-stick coating, while the remaining components and processes were the same as in Example 1.

[0041] Comparative Example 2 Compared with Example 1, in Comparative Example 2, an equal amount of nano-silica was used to replace the nano-carbon powder in Example 1 during the preparation of the non-stick coating, while the remaining components and processes were the same as in Example 1.

[0042] Comparative Example 3 Compared with Example 1, in Comparative Example 3, the preparation process of the base oil non-stick coating and the top oil non-stick coating involved replacing the silane coupling agent KH560 in Example 1 with an equal amount of polyethylene glycol, while the remaining components and processes were the same as in Example 1.

[0043] Comparative Example 4 Compared with Example 1, in Comparative Example 4, drying at 60°C was used instead of natural air drying in step S3, while the remaining components and processes were the same as in Example 1.

[0044] Comparative Example 5 Compared with Example 1, the humidification treatment in step S5 was omitted in Comparative Example 5, while the remaining components and processes were the same as in Example 1.

[0045] Product effectiveness test Non-stick pans prepared in Examples 1, 4, and Comparative Examples 1-5 were used. The coatings formed on the pan surfaces were tested for adhesion, abrasion resistance, and impact resistance. Adhesion was tested according to GB / T9286-1998 standard; abrasion resistance was tested according to GB / T1768-1979 standard. After grinding with a 300g weight for 200 revolutions, the weight loss of the coating was used as the abrasion resistance index; the smaller the weight loss, the better the abrasion resistance. Impact resistance was tested according to GB / T1732-93 standard. Specific results are shown in Table 1.

[0046] Table 1

[0047] As can be seen from Table 1, the coating on the surface of the non-stick pan prepared in the embodiments of the present invention has significantly better adhesion, wear resistance and impact resistance than comparative examples 1-3.

[0048] The results from Comparative Example 1 and Example 1 show that when an equal amount of nano-iron oxide is used instead of nano-silicon in the preparation of the base coat non-stick coating, although the impact on the adhesion of the coating is relatively small, it has a significant adverse effect on the wear resistance and impact resistance of the coating. This may be because the lack of nano-silicon weakens the bond strength between the base coat and the top coat, making the top coat more prone to damage.

[0049] The results from Comparative Example 2 and Example 1 show that when the nano-carbon powder in the topcoat non-stick coating interacts with other components (organic and inorganic substances), it can significantly improve adhesion, abrasion resistance and impact resistance.

[0050] The results of Comparative Example 3 and Example 1 show that silane coupling agent KH560 cannot be replaced by other common organic substances (polyethylene glycol). Silane coupling agent KH560 plays a decisive role in the fusion of various components in the coating, and thus has a great influence on the adhesion, wear resistance and impact resistance of the coating.

[0051] The results from Comparative Examples 4-5 and Example 1 show that natural air drying and humidification treatment significantly improve the adhesion, abrasion resistance and impact resistance of the coating.

[0052] The results from Examples 1 and 4 show that the appropriate addition of graphene oxide can improve the wear resistance and impact resistance of the coating.

[0053] In summary, during the preparation of the base oil non-stick coating and the top oil non-stick coating of this invention, the various components interact with each other, thereby improving the adhesion, wear resistance and impact resistance of the coating. However, they cannot simply replace some of the components.

[0054] The effects of the other embodiments described above are similar to those of Embodiment 1, and will not be repeated here.

[0055] It should be noted that the above embodiments are only some implementation methods of the present invention and do not constitute a limitation on the scope of protection of the present invention. Within the scope of protection of the present invention, appropriate changes to process parameters or component dosages can also achieve similar effects to Embodiment 1.

Claims

1. A non-stick pan manufacturing process, characterized in that, Includes the following steps: S1. Silk screen print the ink with the predetermined pattern onto the surface of the pot body blank, and then dry and cure it; S2. Using an etching process, the areas on the surface of the S1 pot body blank without screen printing ink are etched to create a raised pattern on the surface of the pot body blank. After cleaning and drying, the blank is then stamped, stretched, degreased, and sandblasted. S3. The pot body blank processed in step S2 is preheated, then the pot body blank is sprayed with a base oil non-stick coating, and then air-dried to form a base oil coating. S4. Polish the raised patterned areas on the surface of the pot body blank after step S3. S5. After preheating the pot body blank processed in step S4, humidify its surface. S6. Spray a non-stick coating onto the surface of the pot body blank processed in step S5 to form a surface oil coating, and dry it to obtain the non-stick pot. The preparation process of the base oil non-stick coating includes mixing water, glycerin, nano-silicon, nano-iron oxide, polytetrafluoroethylene, silane coupling agent, sodium dodecylbenzenesulfonate, polydimethylsiloxane, and diisopropyl peroxide to form a base oil non-stick coating. The preparation process of the non-stick topcoat includes water, nano-carbon powder, nano-silica, silane coupling agent, sodium dodecylbenzenesulfonate, polyethylene glycol, polytetrafluoroethylene, polydimethylsiloxane, and diisopropyl peroxide to form a non-stick topcoat; the preparation process of the non-stick topcoat includes, by weight ratio, 30-50 parts water, 0.8-3 parts nano-carbon powder, 2-8 parts nano-silica, 2-8 parts silane coupling agent, 2-12 parts polyethylene glycol, 5-15 parts polytetrafluoroethylene, 1-3 parts polydimethylsiloxane, and 1-5 parts diisopropyl peroxide to form a non-stick topcoat.

2. The non-stick pan manufacturing process according to claim 1, characterized in that, The non-stick coating also contains 0.1-0.3 parts of graphene oxide.

3. The non-stick pan manufacturing process according to claim 1, characterized in that, The base oil non-stick coating also includes pigments.

4. The non-stick pan manufacturing process according to claim 1, characterized in that, In step S3, the thickness of the base oil coating is 12-35 μm.

5. The non-stick pan manufacturing process according to claim 1, characterized in that, In step S5, the surface of the pot body blank is humidified to achieve a surface humidity of 85-95%.

6. The non-stick pan manufacturing process according to claim 1, characterized in that, In step S6, the thickness of the surface oil coating is 12-35 μm.

7. The non-stick pan manufacturing process according to claim 1, characterized in that, 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, It is made by the non-stick pan manufacturing process described in any one of claims 1-7.

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