CN114571367B - Enamel double-bottom pot and preparation method thereof - Google Patents
Enamel double-bottom pot and preparation method thereof Download PDFInfo
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- CN114571367B CN114571367B CN202210256925.7A CN202210256925A CN114571367B CN 114571367 B CN114571367 B CN 114571367B CN 202210256925 A CN202210256925 A CN 202210256925A CN 114571367 B CN114571367 B CN 114571367B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D7/00—Treating the coatings, e.g. drying before burning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention discloses a preparation method of an enamel double-bottom pot, which comprises the following steps: s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment; s2: stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol uniformly, then spraying the mixture on the bottom of a pot body, and baking the mixture in an oven for precuring to obtain a pot body bottom coating; s3: and compounding the composite raw material consisting of titanium carbide, potassium feldspar, calcined kaolin, sepiolite, sodium fluosilicate, borax, sodium metavanadate, attapulgite powder, silicon micropowder and deionized water on the bottom coating of the pot body in a thermal compounding manner to obtain the enamel double-bottom pot. The enamel double-bottom pot prepared by the invention has good comprehensive mechanical property and dimensional stability, has excellent heat-conducting property, has good self-cleaning and shock-resistant effects, can improve the cooking experience effect of users and can meet the requirement of long-term service life.
Description
Technical Field
The invention relates to the technical field of kitchen ware, in particular to an enamel double-bottom pot and a preparation method thereof.
Background
The kitchenware products are new and new, meet the increasing high-quality living requirements of people, and comprise a boiling pot, a frying pan, a milk pot, an induction cooker and other products. The cooker with good heat conductivity brings better cooking effect experience to users, and particularly, poor heat transfer or uneven heat distribution at the bottom of a cooker body can reduce the cooking effect and cause the phenomenon that food in the cooker body is burnt; in severe cases, the useful life of the cookware product will be shortened.
Disclosure of Invention
In view of the defects of the prior art, the invention provides an enamel double-bottom pot to solve the problem that the existing enamel pot cannot meet the comprehensive performance requirements of heat conductivity, self-cleaning, impact resistance and the like, and further cannot meet the requirements of improvement of cooking effect of users and long-term reliable use.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a preparation method of an enamel double-bottom pan comprises the following steps:
s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment;
s2: uniformly stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol, then spraying the mixture on the bottom of the pot body obtained in the step S1, and putting the pot body into a drying oven at 120-160 ℃ for baking for 5min for precuring to obtain a pot body bottom coating; according to the preparation method, the silicon-aluminum composite sol main body component is subjected to film forming preparation at the bottom of the pot body, so that the defects that a single silicon dioxide sol is easy to crystallize and an obtained film layer is brittle are effectively overcome, and the toughness of the film layer of the coating prepared from the silicon-aluminum composite sol is better; through the addition of the MOF reinforced graphene composite material, the characteristics of the metal organic framework MOF material and the graphene material are cooperatively exerted, and the heat-conducting property of the enamel double-bottom pot is further effectively improved.
S3: and compounding the composite raw material composed of titanium carbide, potassium feldspar, calcined kaolin, sepiolite, sodium fluosilicate, borax, sodium metavanadate, attapulgite powder, silicon micropowder and deionized water on the bottom coating of the pot body obtained in the step S2 in a thermal compounding mode to obtain the enamel double-bottom pot. The enamel coating prepared from the composite raw materials has the advantages of excellent thermal conductivity, high temperature resistance, corrosion resistance, heat transfer uniformity and the like; and the strength of the base body at the bottom of the pot body is improved, the adhesive property of the enamel coating and the base body of the pot body is high, and the enamel coating is prevented from falling off due to collision.
Preferably, the mass ratio of the silicon-aluminum composite sol to the MOF reinforced graphene composite material to the deionized water to the composite auxiliary agent to the isopropanol is 45-60: 18 to 24:7 to 15:12 to 15:5 to 9.
Preferably, the silicon-aluminum composite sol is obtained by firstly stirring the aluminum sol in a container, then adding the siloxane and the composite auxiliary agent, adjusting the pH value to 4.2-5.6, and stirring for reaction. The simple mixing of different sols easily leads to unstable double electric layers on the surfaces of the particles and sol damage occurs. In order to obtain stable composite sol, a synchronous generation method is adopted in the application. Namely, firstly, siloxane is added into the aluminum sol, and the silicon-aluminum composite sol is directly generated by the hydrolysis of the siloxane.
Preferably, the compound auxiliary agent is obtained by compounding organic bentonite, organic acid and deionized water. According to the method, the organic bentonite is used as an auxiliary agent, the stability of the silicon-aluminum composite sol is further improved, the sol film forming reaction is promoted, the pH value of the silicon-aluminum composite sol is favorably adjusted by adding the organic acid, and the film forming reaction of the coating at the bottom of the pot body is more favorably realized.
Preferably, the preparation method of the MOF-reinforced graphene composite material comprises the following steps: carrying out nucleophilic substitution reaction on a polyol triazine compound and vinylaniline to obtain a polyol triazine intermediate, adding long-chain olefin, and carrying out addition reaction under the action of an initiator to obtain a polyol triazine derivative; taking a polyol triazine derivative as an organic ligand, and mixing the polyol triazine derivative with a copper nitrate solution according to the molar ratio of the organic ligand to the copper nitrate of 1:2, mixing, and carrying out molecular self-assembly reaction by a hydrothermal method to obtain a metal organic framework MOF material; and then adding graphene or graphene oxide dispersion liquid, and stirring to obtain the MOF reinforced graphene composite material. According to the application, the MOF structure is used as a modifier to uniformly disperse graphene, so that the heat-conducting property of the graphene is enhanced, the high-temperature resistance is improved by introducing triazine, and the hydroxyl of multiple sites improves the combination of a copper nitrate solution and the combination of a pot body substrate. On the other hand, the heat-conducting property of the double-bottom pot is further improved through the synergistic effect of the graphene combined with metal elements in the MOF.
Preferably, the polyol triazine compound is 2, 2'',2'' '- [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diazanyl ] tetraethanol or 2,2' - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diimine ] diethanol.
Preferably, the vinylaniline is at least one of 4- (vinyloxy) -aniline, 3-vinyl-aniline, 4-methoxy-2-vinylaniline and 2-isopropyl-4-vinylaniline.
Preferably, the long-chain olefin is at least one of 2- (perfluoro-9-methyloctyl) ethyl acrylate, 2- (perfluoro-7-methyloctyl) ethyl methacrylate, 1H, 2H-perfluorooctanol acrylate, perfluorohexylethylene, ethyl 2-perfluorooctyl acrylate, 1H-perfluorooctyl acrylate, and 1H, 1H-pentadecafluorooctyl methacrylate. The fluorine-containing long-chain olefin improves the self-cleaning and shock resistance of the pan body substrate coating.
Preferably, in step S3, the composite raw materials comprise, by weight, 7 to 8 parts of titanium carbide, 1.5 to 3.5 parts of potassium feldspar, 2 to 3 parts of calcined kaolin, 0.2 to 0.7 part of sepiolite, 0.2 to 0.5 part of sodium fluosilicate, 1.2 to 2.5 parts of borax, 1 to 2 parts of sodium metavanadate, 1.6 to 2.1 parts of attapulgite powder, 4.2 to 5.7 parts of silica micropowder, and 15 to 30 parts of deionized water, respectively.
Preferably, in step S3, the thermal compounding temperature is 210 to 230 ℃.
The invention also provides an enamel double-bottom pot which is prepared by the preparation method of the enamel double-bottom pot.
The invention has the beneficial effects that:
the enamel double-bottom pot prepared by the invention has good comprehensive mechanical property and dimensional stability, has excellent heat-conducting property, has good self-cleaning and shock-resistant effects, can improve the cooking experience effect of users and can meet the requirement of long-term service life.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example 1
The preparation method of the enamel double-bottom pot comprises the following steps:
s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment;
s2: mixing 45 mass ratio: 18:7:12:5, uniformly stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol, then spraying the mixture on the bottom of the pot body obtained in the step S1, and putting the pot body into a 120 ℃ drying oven to bake for 5min for precuring to obtain a pot body bottom coating;
s3: and compounding the composite raw material consisting of 7 parts of titanium carbide, 1.5 parts of potassium feldspar, 2 parts of calcined kaolin, 0.2 part of sepiolite, 0.2 part of sodium fluosilicate, 1.2 parts of borax, 1 part of sodium metavanadate, 1.6 parts of attapulgite powder, 4.2 parts of silicon micro powder and 15 parts of deionized water on the bottom coating of the pot body obtained in the step S2 in a thermal compounding mode, wherein the compounding temperature of the thermal compounding is 210 ℃, and the enamel double-bottom pot is obtained. The composite auxiliary agent is obtained by compounding 5 parts of organic bentonite, 3 parts of organic acid and 15 parts of deionized water.
The silicon-aluminum composite sol is obtained by firstly stirring the aluminum sol in a container, then adding siloxane and a composite auxiliary agent, adjusting the pH value to 4.2, and stirring for reaction. The mass ratio of the aluminum sol to the siloxane to the composite auxiliary agent is 32:24:7. the composite auxiliary agent is obtained by compounding 5 parts of organic bentonite, 10 parts of deionized water and a proper amount of organic acid.
The preparation method of the MOF reinforced graphene composite material comprises the following steps: mixing a mixture of 1:1.02 of 2,2' ',2' ' ' - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diazanyl ] tetraethanol and 4- (vinyloxy) -aniline, to obtain a polyol triazine intermediate, and reacting the resulting product with a polyol triazine intermediate in a molar ratio of 2- (perfluoro-9-methyloctyl) ethyl acrylate to polyol triazine intermediate of 1: adding 2- (perfluoro-9-methyloctyl) ethyl acrylate into the mixture with the addition amount of 1, and carrying out addition reaction under the action of initiator ammonium persulfate to obtain a polyol triazine derivative; taking a polyol triazine derivative as an organic ligand, and mixing the polyol triazine derivative with a copper nitrate solution according to the molar ratio of the organic ligand to the copper nitrate of 1:2, mixing, heating to 70 ℃, and carrying out molecular self-assembly reaction by a hydrothermal method to obtain a metal organic framework MOF material; then adding graphene oxide dispersion liquid, and stirring to obtain the MOF reinforced graphene composite material, wherein the mass ratio of the metal organic framework MOF material to the graphene oxide dispersion liquid is 5:12.
example 2
The preparation method of the enamel double-bottom pot comprises the following steps:
s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment;
s2: and (2) mixing the following components in percentage by mass: 21:11:13.5:6, uniformly stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol, then spraying the mixture on the bottom of the pot body obtained in the step S1, and putting the pot body into a drying oven at 140 ℃ for baking for 5min for pre-curing to obtain a pot body bottom coating;
s3: and compounding a composite raw material consisting of 7.5 parts of titanium carbide, 2.5 parts of potassium feldspar, 2.5 parts of calcined kaolin, 0.4 part of sepiolite, 0.3 part of sodium fluosilicate, 1.8 parts of borax, 1.5 parts of sodium metavanadate, 1.9 parts of attapulgite powder, 4.9 parts of silicon micropowder and 22 parts of deionized water on the bottom coating of the pot body obtained in the step S2 in a thermal compounding mode, wherein the compounding temperature of the thermal compounding is 230 ℃, and thus the enamel composite bottom pot is obtained. The composite additive is prepared by compounding 7 parts of organic bentonite, 8 parts of organic acid and 20 parts of deionized water.
The silicon-aluminum composite sol is obtained by firstly stirring the aluminum sol in a container, then adding siloxane and a composite auxiliary agent, adjusting the pH value to 4.8, and stirring for reaction. The mass ratio of the aluminum sol to the siloxane to the composite auxiliary agent is 35:25:8. the composite auxiliary agent is obtained by compounding 7 parts of organic bentonite, 12 parts of deionized water and a proper amount of organic acid.
The preparation method of the MOF reinforced graphene composite material comprises the following steps: mixing a mixture of 1:1.02 of 2,2' ',2' ' ' - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diazanyl ] tetraethanol and 3-vinyl-aniline, to carry out nucleophilic substitution reaction to obtain a polyol triazine intermediate, and then, obtaining a polyol triazine intermediate by reacting 2-perfluorooctyl ethyl acrylate and the polyol triazine intermediate in a molar ratio of 1: adding 2-perfluorooctyl ethyl acrylate into the mixture with the addition amount of 1, and performing addition reaction under the action of initiator ammonium persulfate to obtain a polyol triazine derivative; taking a polyol triazine derivative as an organic ligand, and mixing the polyol triazine derivative with a copper nitrate solution according to the molar ratio of the organic ligand to the copper nitrate of 1:2, mixing, heating to 70 ℃, and carrying out molecular self-assembly reaction by a hydrothermal method to obtain a metal organic framework MOF material; then adding graphene oxide dispersion liquid, and stirring to obtain the MOF reinforced graphene composite material, wherein the mass ratio of the metal organic framework MOF material to the graphene or graphene oxide dispersion liquid is 7:13.
example 3
The preparation method of the enamel double-bottom pot comprises the following steps:
s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment;
s2: mixing the components in a mass ratio of 60:24:15:15:9, uniformly stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol, then spraying the mixture on the bottom of the pot body obtained in the step S1, and putting the pot body into a 160 ℃ drying oven to bake for 5min for precuring to obtain a pot body bottom coating;
s3: and compounding the composite raw material consisting of 8 parts of titanium carbide, 3.5 parts of potassium feldspar, 3 parts of calcined kaolin, 0.7 part of sepiolite, 0.5 part of sodium fluosilicate, 2.5 parts of borax, 2 parts of sodium metavanadate, 2.1 parts of attapulgite powder, 5.7 parts of silicon micro powder and 30 parts of deionized water on the bottom coating of the pot body obtained in the step S2 in a thermal compounding mode, wherein the compounding temperature of the thermal compounding is 230 ℃, and the enamel double-bottom pot is obtained. The composite auxiliary agent is prepared by compounding 10 parts of organic bentonite, 12 parts of organic acid and 30 parts of deionized water.
The silicon-aluminum composite sol is obtained by firstly stirring the aluminum sol in a container, then adding siloxane and a composite auxiliary agent, adjusting the pH value to 5.6, and stirring for reaction. The mass ratio of the aluminum sol to the siloxane to the composite auxiliary agent is 37:27:9. the composite auxiliary agent is obtained by compounding 10 parts of organic bentonite, 15 parts of deionized water and a proper amount of organic acid.
The preparation method of the MOF reinforced graphene composite material comprises the following steps: mixing a mixture of 1:1.02 nucleophilic substitution reaction of 2,2' - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diimine ] diethanol with 2-isopropyl-4-vinylaniline to give a polyol triazine intermediate, then reacting the resulting mixture in a molar ratio of 1H, 1H-perfluorooctyl acrylate to polyol triazine intermediate of 1:1, adding 1H, 1H-perfluorooctyl acrylate, and carrying out addition reaction under the action of an initiator ammonium persulfate to obtain a polyol triazine derivative; taking a polyol triazine derivative as an organic ligand, and mixing the polyol triazine derivative with a copper nitrate solution according to the molar ratio of the organic ligand to the copper nitrate of 1:2, mixing, heating to 70 ℃, and carrying out molecular self-assembly reaction by a hydrothermal method to obtain a metal organic framework MOF material; then adding graphene oxide dispersion liquid, and stirring to obtain the MOF reinforced graphene composite material, wherein the mass ratio of the metal organic framework MOF material to the graphene oxide dispersion liquid is 8:15.
comparative example 1
The preparation method of the enamel double-bottom pot in the comparative example is basically the same as that of the example 1 in raw material composition and preparation steps, and the difference is that the MOF reinforced graphene composite material is not added in the step S2.
Comparative example 2
The preparation method of the enamel double-bottom pot in the comparative example is basically the same as that in the example 1 in raw material composition and preparation steps, and the difference is that in the preparation method of the enamel double-bottom pot in the comparative example, graphene is adopted to replace MOF to reinforce the graphene composite material in the step S2.
Comparative example 3
The preparation method of the enamel double-bottom pot in the comparative example has the same raw material composition and preparation steps as those of the example 1, and the difference is that the preparation method of the enamel double-bottom pot in the comparative example adopts silica sol to replace silicon-aluminum composite sol in the step S2.
The enamel double-bottom pots prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to performance tests, and the performance results are shown in table 1:
wherein, the hardness is tested according to GB/T6739; impact resistance was tested according to GB 1732; the thermal conductivity is measured by a photothermal reflection method; the heat resistance test is carried out according to GB/T11418-1989 method for testing the heat resistance of enamel; the temperature and rapid change resistance test is carried out according to GB/T11419-2008 & lt enamel temperature and rapid change resistance test method > corrosion resistance testing the corrosion resistance was determined in accordance with GB/T9989.1-2015 "determination of chemical resistance of enamel part 1: determination of acid corrosion resistance at room temperature "; and (3) testing the stripping resistance: the spalling resistance of the sample was evaluated by the area of the spalled region on the surface of the sample per square decimeter in accordance with GB/T19354-2003 "determination of the adherence of an aluminum porcelain layer to an aluminum porcelain enamel under the action of an electrolyte (spalling test").
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Resistance to flaking, mm 2 | 6.2 | 6.7 | 6.5 | 6.2 | 6.4 | 10.3 |
| Hardness of | 6H | 6H | 6H | 6H | 6H | 6H |
| Impact resistance, kg cm | 252 | 256 | 255 | 251 | 252 | 245 |
| Thermal conductivity, W/m.K | 1670 | 1712 | 1731 | 1353 | 1466 | 1632 |
| Rate of temperature rise in DEG C/sec | 2.61 | 2.53 | 2.57 | 1.94 | 2.18 | 2.32 |
| Heat resistance, C | 483 | 483 | 483 | 483 | 483 | 483 |
| High temp. and high temp. resistance | 420 | 420 | 420 | 400 | 400 | 380 |
| Corrosion resistance | No whitening and foaming | No whitening and foaming phenomena | No whitening and foaming | No whitening and foaming | No whitening and foaming | No whitening,Foaming and the like |
| Contact angle | 124° | 123° | 126° | 124° | 125° | 123° |
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (9)
1. The preparation method of the enamel double-bottom pan is characterized by comprising the following steps:
s1: providing an aluminum-based pot body, wherein the outer surface of the bottom of the pot body is subjected to sand blasting treatment;
s2: uniformly stirring and mixing the silicon-aluminum composite sol, the MOF reinforced graphene composite material, deionized water, a composite auxiliary agent and isopropanol, then spraying the mixture on the bottom of the pot body obtained in the step S1, and putting the pot body into a drying oven at 120-160 ℃ for baking for 5min for precuring to obtain a pot body bottom coating;
s3: compounding a composite raw material composed of titanium carbide, potassium feldspar, calcined kaolin, sepiolite, sodium fluosilicate, borax, sodium metavanadate, attapulgite powder, silicon micropowder and deionized water on the bottom coating of the pot body obtained in the step S2 in a thermal compounding mode to obtain the enamel double-bottom pot;
the preparation method of the MOF reinforced graphene composite material comprises the following steps: carrying out nucleophilic substitution reaction on a polyol triazine compound and vinylaniline to obtain a polyol triazine intermediate, adding long-chain olefin, and carrying out addition reaction under the action of an initiator to obtain a polyol triazine derivative; mixing a polyol triazine derivative serving as an organic ligand with a copper nitrate solution, and carrying out a molecular self-assembly reaction by a hydrothermal method to obtain a metal organic framework MOF material; and then adding graphene or graphene oxide dispersion liquid, and stirring to obtain the MOF reinforced graphene composite material.
2. The preparation method of the enamel double-bottom pot as claimed in claim 1, wherein the mass ratio of the silicon-aluminum composite sol, the MOF reinforced graphene composite material, the deionized water, the composite auxiliary agent and the isopropanol is 45-60: 18 to 24:7 to 15:12 to 15:5 to 9.
3. The method for preparing enamel pot with covered bottom as claimed in claim 1, wherein said composite sol of silicon and aluminum is obtained by stirring the sol of aluminum in a container, then adding siloxane and composite assistant, adjusting pH to 4.2-5.6, stirring and reacting.
4. The method for preparing the enamel pot with the covered bottom as claimed in claim 1, wherein the compound auxiliary agent is obtained by compounding organic bentonite, organic acid and deionized water.
5. The method for preparing an enamel pot as claimed in claim 1, wherein the polyol triazine compound is 2,2',2 "" - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diazido ] tetraethanol or 2,2' - [ (6-chloro-1, 3, 5-triazine-2, 4-diyl) diimine ] diethanol.
6. The method of claim 1, wherein the vinylaniline is at least one of 4- (vinyloxy) -aniline, 3-vinyl-aniline, 4-methoxy-2-vinylaniline, and 2-isopropyl-4-vinylaniline.
7. The method of claim 1, wherein the long-chain olefin is at least one of 2- (perfluoro-9-methyloctyl) ethyl acrylate, 2- (perfluoro-7-methyloctyl) ethyl methacrylate, 1H, 2H-perfluorooctanol acrylate, perfluorohexylethylene, ethyl 2-perfluorooctyl acrylate, 1H-perfluorooctyl acrylate, and 1H, 1H-pentadecafluorooctyl methacrylate.
8. The method for preparing enamel covered bottom pan as claimed in claim 1, characterized in that in step S3, the temperature of the thermal recombination is 210-230 ℃.
9. An enamel pot with a covered bottom, characterized in that the enamel pot with a covered bottom is prepared by the method for preparing the enamel pot with a covered bottom as claimed in any one of claims 1 to 8.
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