Non-stick pan coating, preparation method thereof and pan

Abstract

The invention relates to the technical field of non-stick pan coatings, and provides a non-stick pan coating, a preparation method thereof and a pan. The non-stick pan coating comprises the following components in parts by weight: 45-50 parts of silicon carbide, 20-30 parts of silicon nitride, 100-120 parts of aluminum nitride, 20-40 parts of modifier modified aluminum oxide, 140-160 parts of saturated polyester resin, 100-120 parts of organic silicon resin and 1-2 parts of lubricating grease, and a modifier of the modifier modified aluminum oxide is a compound containing amino and carboxyl. According to the technical scheme, the problems of poor wear resistance and adhesive force of a non-stick pan coating in related technologies are solved.

Description

Technical Field

[0001] The invention relates to the technical field of non-stick pan coatings, and in particular to a non-stick pan coating and a preparation method thereof, and a pan. Background Art

[0002] Non-stick pans are a type of kitchenware that is widely used in modern society. Since food does not stick to the bottom of the pan during cooking, it not only provides a good cooking experience, but also makes subsequent cleaning more convenient. Therefore, whether in home cooking or professional kitchens, non-stick pans have become one of the most important kitchenware. The non-stick properties of non-stick pans are mainly due to the non-stick coating. However, the wear resistance and adhesion of existing non-stick coatings are generally poor, which greatly shortens the service life of non-stick pans. Therefore, it is very important for technicians in this field to study a non-stick coating with good wear resistance and adhesion. Summary of the invention

[0003] The invention provides a non-stick pan coating and a preparation method thereof and a pan, which solves the problems of poor wear resistance and poor adhesion of the non-stick pan coating in the related art.

[0004] The technical solution of the present invention is as follows: The present invention provides a non-stick pan coating, comprising the following components in parts by weight: 45-50 parts of silicon carbide, 20-30 parts of silicon nitride, 100-120 parts of aluminum nitride, 20-40 parts of modifier-modified aluminum oxide, 140-160 parts of saturated polyester resin, 100-120 parts of silicone resin, and 1-2 parts of lubricating grease, wherein the modifier of the modifier-modified aluminum oxide is a compound containing amino groups and carboxyl groups.

[0005] As a further technical solution, the compound containing amino and carboxyl groups includes 2-amino-4,5-dicarboxyimidazole and / or N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0006] As a further technical solution, the compound containing amino and carboxyl groups includes 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid in a mass ratio of 1:9 to 9:1.

[0007] The present invention further enhances the wear resistance and adhesion of the non-stick pan coating by compounding 2-amino-4,5-dicarboxy imidazole and N-(5-amino-1-carboxypentyl) iminodiacetic acid in a mass ratio of 1:9 to 9:1.

[0008] As a further technical solution, the mass ratio of the 2-amino-4,5-dicarboxyimidazole to N-(5-amino-1-carboxypentyl)iminodiacetic acid is 1:3 to 3:1.

[0009] The present invention further enhances the wear resistance and adhesion of the non-stick pan coating by limiting the mass ratio of 2-amino-4,5-dicarboxyimidazole to N-(5-amino-1-carboxypentyl)iminodiacetic acid to 1:3-3:1.

[0010] As a further technical solution, the raw materials of the modifier-modified alumina include alumina and a modifier in a mass ratio of 20:1 to 5.

[0011] As a further technical solution, the raw materials of the modifier-modified alumina include alumina and modifier in a mass ratio of 20:3~4.

[0012] The present invention further enhances the wear resistance and adhesion of the non-stick pan coating by limiting the raw materials of the modifier-modified aluminum oxide to include aluminum oxide and the modifier in a mass ratio of 20:3-4.

[0013] As a further technical solution, the particle size of the aluminum oxide is 5 μm.

[0014] As a further technical solution, the preparation method of the modifier-modified alumina comprises the following steps: The modifier is dissolved in tetrahydrofuran, and aluminum oxide is added and mixed evenly, filtered, and dried to obtain the modifier-modified aluminum oxide.

[0015] The present invention provides a method for preparing a non-stick pan coating, comprising the following steps: The saturated polyester resin, silicone resin and grease are evenly mixed, and silicon carbide, modifier-modified alumina, aluminum nitride and silicon nitride are added and dispersed evenly to obtain a non-stick pan coating.

[0016] The present invention provides a cookware, comprising the non-stick coating or the non-stick coating prepared by the preparation method. The non-stick coating prepared by the present invention can be used in a variety of cast iron cookware, such as cast iron frying pans, cast iron steak frying pans, cast iron stew pots, etc., and has excellent non-stick effect, wear resistance and adhesion.

[0017] The working principle and beneficial effects of the present invention are: In the present invention, a compound containing amino and carboxyl groups is selected as a modifier to modify alumina, thereby enhancing the binding property of alumina with resin and cookware. The alumina is used in combination with components such as silicon carbide, silicon nitride, aluminum nitride, saturated polyester resin, silicone resin, grease, etc., and the content of each component is adjusted and optimized at the same time, thereby enhancing the adhesion between the non-stick pan coating and the iron pan and the dispersibility of the alumina in the coating raw material, thereby solving the problems of poor wear resistance and adhesion of the non-stick pan coating. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the following examples and comparative examples, the parameters of the raw materials are as follows: The saturated polyester resin is Toyobo saturated polyester resin GK-250; The silicone resin is Dow Corning silicone resin RSN-0805; Silicon carbide: particle size 1μm; Alumina: particle size 5μm; Aluminum nitride: particle size 3μm; Silicon nitride: particle size 500nm; The greases are all hydrogenated castor oil.

[0020] Example 1 A non-stick pan coating and a preparation method thereof, comprising the following steps: S1, dissolving 1 part of 2-amino-4,5-dicarboxyimidazole in 50 parts of tetrahydrofuran, adding 20 parts of aluminum oxide, ultrasonically treating for 20 minutes, filtering, and drying to obtain a modifier-modified aluminum oxide; S2. Mix 140 parts of saturated polyester resin, 100 parts of silicone resin and 1 part of grease and stir for 30 minutes until uniform, then add 45 parts of silicon carbide, 20 parts of modifier-modified alumina, 100 parts of aluminum nitride and 20 parts of silicon nitride, and homogenize for 3 hours to obtain a non-stick pan coating.

[0021] Example 2 A non-stick pan coating and a preparation method thereof, comprising the following steps: S1, dissolving 10 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid in 100 parts of tetrahydrofuran, adding 40 parts of aluminum oxide, ultrasonically treating for 20 minutes, filtering, and drying to obtain a modifier-modified aluminum oxide; S2. Mix 160 parts of saturated polyester resin, 120 parts of silicone resin and 2 parts of grease and stir for 30 minutes until uniform. Then add 50 parts of silicon carbide, 40 parts of modifier-modified alumina, 120 parts of aluminum nitride and 30 parts of silicon nitride. Homogenize for 4 hours to obtain a non-stick pan coating.

[0022] Example 3 The only difference from Example 1 is that 2-amino-4,5-dicarboxyimidazole is replaced by an equal amount of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0023] Example 4 A non-stick pan coating and a preparation method thereof, comprising the following steps: S1, dissolving 0.1 parts of 2-amino-4,5-dicarboxyimidazole and 0.9 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid in 50 parts of tetrahydrofuran, adding 20 parts of aluminum oxide, ultrasonically treating for 20 minutes, filtering, and drying to obtain a modifier-modified aluminum oxide; S2. Mix 140 parts of saturated polyester resin, 100 parts of silicone resin and 1 part of grease and stir for 30 minutes until uniform, then add 45 parts of silicon carbide, 20 parts of modifier-modified alumina, 100 parts of aluminum nitride and 20 parts of silicon nitride, and homogenize for 3 hours to obtain a non-stick pan coating.

[0024] Example 5 The only difference from Example 4 is that: 0.9 parts of 2-amino-4,5-dicarboxyimidazole and 0.1 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0025] Example 6 The only difference from Example 4 is that: 0.25 parts of 2-amino-4,5-dicarboxyimidazole and 0.75 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0026] Example 7 The only difference from Example 4 is that: 0.75 parts of 2-amino-4,5-dicarboxyimidazole and 0.25 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0027] Example 8 The only difference from Example 4 is that: 3.75 parts of 2-amino-4,5-dicarboxyimidazole and 1.25 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0028] Example 9 The only difference from Example 4 is that: 2.25 parts of 2-amino-4,5-dicarboxyimidazole and 0.75 parts of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0029] Example 10 The only difference from Example 4 is: 3 parts of 2-amino-4,5-dicarboxyimidazole and 1 part of N-(5-amino-1-carboxypentyl)iminodiacetic acid.

[0030] Comparative Example 1 A non-stick pan coating and a preparation method thereof, comprising the following steps: 140 parts of saturated polyester resin, 100 parts of silicone resin and 1 part of grease were mixed and stirred for 30 minutes until uniform, and then 45 parts of silicon carbide, 20 parts of aluminum oxide, 100 parts of aluminum nitride and 20 parts of silicon nitride were added and homogenized for 3 hours to obtain a non-stick pan coating.

[0031] Test example The non-stick pan coatings prepared in Examples 1 to 10 and Comparative Example 1 were prepared according to the method in GB / T1768-2006, and a tinplate was selected as the substrate. The dry film thickness was 25 μm, and the wear amount of the non-stick pan coating was tested by grinding with a grinding wheel for 200 turns under a 250 g weight. The non-stick pan coatings prepared in Examples 1 to 10 and Comparative Example 1 were sprayed on the surface of the non-stick pan substrate, and after baking, a coating with a dry film thickness of 25 μm was obtained. The adhesion test was carried out according to the method in GB / T 4893.4-2013, and the results are shown in Table 1.

[0032] Table 1 Wear and adhesion test results of non-stick pan coatings prepared in Examples 1 to 10 and Comparative Example 1

[0033] Compared with Comparative Example 1, the alumina in the non-stick pan coating prepared in Example 1 and Examples 3 to 10 is modifier-modified alumina. As a result, the wear amount of Example 1 and Examples 3 to 10 is smaller than that of Comparative Example 1, and the adhesion is better than that of Comparative Example 1, indicating that the use of modifier-modified alumina enhances the wear resistance and adhesion of the non-stick pan coating.

[0034] Compared with Example 1 and Example 3, the modifier in the modifier-modified alumina in the non-stick pan coating prepared in Examples 4 to 7 is a compound use of 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid in a mass ratio of 1:9 to 9:1. As a result, the wear amount of Examples 4 to 7 is smaller than that of Example 1 and Example 3, and the adhesion is better than that of Example 1 and Example 3, indicating that the compound use of 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid in a mass ratio of 1:9 to 9:1 further enhances the wear resistance and adhesion of the non-stick pan coating.

[0035] Compared with Examples 4 to 5, the modifier in the modifier-modified alumina in the non-stick pan coating prepared in Examples 6 to 7 is 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid in a mass ratio of 1:3 to 3:1. As a result, the wear amount of Examples 6 to 7 is smaller than that of Examples 4 to 5, indicating that the mass ratio of 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid is 1:3 to 3:1, which further enhances the wear resistance of the non-stick pan coating.

[0036] Compared with Examples 7-8, the raw materials of the modifier-modified alumina in the non-stick pan coating prepared in Examples 9-10 include alumina and modifier in a mass ratio of 20:3-4. As a result, the wear amount of Examples 9-10 is smaller than that of Examples 7-8, and the adhesion is better than that of Examples 7-8, indicating that the raw materials of the modifier-modified alumina include alumina and modifier in a mass ratio of 20:3-4, which further enhances the wear resistance and adhesion of the non-stick pan coating.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-stick pan coating, characterized in that: The invention comprises the following components in parts by weight: 45-50 parts of silicon carbide, 20-30 parts of silicon nitride, 100-120 parts of aluminum nitride, 20-40 parts of modifier-modified aluminum oxide, 140-160 parts of saturated polyester resin, 100-120 parts of silicone resin and 1-2 parts of lubricating grease, wherein the modifier of the modifier-modified aluminum oxide is a compound containing amino group and carboxyl group.

2. The non-stick pan coating according to claim 1, characterized in that: The compounds containing amino groups and carboxyl groups include 2-amino-4,5-dicarboxyimidazole and / or N-(5-amino-1-carboxypentyl)iminodiacetic acid.

3. The non-stick pan coating according to claim 2, characterized in that: The compound containing amino and carboxyl groups includes 2-amino-4,5-dicarboxyimidazole and N-(5-amino-1-carboxypentyl)iminodiacetic acid in a mass ratio of 1:9 to 9:

1.

4. The non-stick pan coating according to claim 3, characterized in that: The mass ratio of the 2-amino-4,5-dicarboxyimidazole to N-(5-amino-1-carboxypentyl)iminodiacetic acid is 1:3 to 3:

1.

5. The non-stick pan coating according to claim 1, characterized in that: The raw materials of the modifier-modified alumina include alumina and a modifier in a mass ratio of 20:1-5.

6. The non-stick pan coating according to claim 5, characterized in that: The raw materials of the modifier-modified alumina include alumina and a modifier in a mass ratio of 20:3-4.

7. The non-stick pan coating according to claim 5, characterized in that: The particle size of the aluminum oxide is 5 μm.

8. The non-stick pan coating according to any one of claims 1 to 7, characterized in that: The preparation method of the modifier-modified aluminum oxide comprises the following steps: The modifier is dissolved in tetrahydrofuran, and aluminum oxide is added and mixed evenly, filtered, and dried to obtain the modifier-modified aluminum oxide.

9. The method for preparing a non-stick pan coating according to any one of claims 1 to 8, characterized in that: The following steps are involved: The saturated polyester resin, silicone resin and grease are evenly mixed, and silicon carbide, modifier-modified alumina, aluminum nitride and silicon nitride are added and dispersed evenly to obtain a non-stick pan coating.

10. A cookware, characterized in that: The invention comprises the non-stick pan coating according to any one of claims 1 to 8 or the non-stick pan coating prepared by the preparation method according to claim 9.

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