CN108976941B - High-wear-resistance non-stick coating special for cookers and preparation method thereof - Google Patents
High-wear-resistance non-stick coating special for cookers and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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Abstract
The invention relates to the field of coatings, and discloses a high-wear-resistance non-stick coating special for cookers, which comprises a surface coating and a non-surface coating; the top coat and the non-top coat comprise: polytetrafluoroethylene emulsion, adhesive resin, wear-resistant resin, pigment, filler and auxiliary agent. Wherein, in the surface layer coating, the nonuniform coefficient Cu of the grain diameters of the pigment and the filler is more than 5; in the non-surface layer coating, the grain diameters of the pigment and the filler adopt discontinuous gradation, the uneven coefficient Cu is more than 5, and the curvature coefficient Cc = 1-3; wherein Cu = d60/d10，Cc=d30 2/d60*d10(ii) a The grain diameters of the pigment and the filler in the surface layer coating are smaller than those of the pigment and the filler in the non-surface layer coating; the filler is insoluble in the coating and can be uniformly dispersed. The wear-resistant non-stick coating disclosed by the invention has excellent non-stick property and better wear resistance, can effectively resist scraping of a pancake turner, and is long in service life.
Description
Technical Field
The invention relates to the field of coatings, in particular to a high-wear-resistance non-stick coating special for cookers and a preparation method thereof.
Background
In the industry of non-stick cookware, the poor wear resistance of the non-stick coating seriously affects the performance and service life of the cookware. The mechanical characteristics of pure Polytetrafluoroethylene (PTFE) such as low strength, flexibility and stretch resistance enable the coating to be easy to irreversibly wear when the coating is impacted by cooking with a turner or cleaned and wiped by hard fiber cloth, so that the non-stick pan loses use value in a short period and is discarded in advance. In order to improve the service life of PTFE coatings, organic resins are often used for modifying PTFE coatings, for example, patent CN 101717601a discloses a non-stick coating using polytetrafluoroethylene as a film-forming substance, which mainly comprises polytetrafluoroethylene, solvent gasoline, alkyd resin, surfactant and wear-resistant filler, but does not achieve a very good wear-resistant effect. The polytetrafluoroethylene coating still has the defects of poor wear resistance and easy scratching. Patent CN 102643582a discloses a non-stick coating containing a primary film-forming fluororesin, an acrylic emulsion and water, with or without an auxiliary agent, which has the problem of insufficient abrasion resistance, although the surface is free from pinholes and yellowing defects.
Therefore, it is necessary to develop a coating which is not sticky and has good wear resistance and is specially used for cookers.
Disclosure of Invention
In order to solve the technical problems, the invention provides the high-wear-resistance non-stick coating special for the cooker and the preparation method thereof.
The specific technical scheme of the invention is as follows: a high-wear-resistance non-stick paint specially used for cooking utensils is composed of surface paint and non-surface paint.
The surface layer coating comprises the following components in percentage by weight:
40-60% of polytetrafluoroethylene emulsion,
5 to 20 percent of bonding resin,
2-8% of wear-resistant resin,
3 to 25 percent of pigment,
10 to 20 percent of filler,
5-35% of an auxiliary agent.
The non-surface layer coating comprises the following components in percentage by weight:
20 to 50 percent of polytetrafluoroethylene emulsion,
5 to 30 percent of bonding resin,
2-15% of wear-resistant resin,
5 to 35 percent of pigment,
10 to 38 percent of filler,
and 20-40% of an auxiliary agent.
In the top coat paint, the nonuniform coefficient Cu of the grain diameters of the pigment and the filler is more than 5.
In the non-surface coating, the particle sizes of the pigment and the filler adopt discontinuous gradation, the nonuniform coefficient Cu is more than 5, and the curvature coefficient (used for describing the integral form of gradation curve distribution) Cc is 1-3; wherein Cu is d60/d10，Cc＝d30 2/d60*d10。
Firstly, determining the pigment and filler to be added and the required total amount, determining the particle size of each pigment and filler and the required total amount of the pigment, and then calculating according to a formula. The particle sizes are arranged from small to large, d10Particle size at 10% of the total weight of pigment and filler, d60Particle size at 60% of the total weight of pigment and filler, d30Is the particle size of 30 percent of the total weight of the pigment and the filler.
The grain size of the pigment and the filler in the surface layer coating is smaller than that of the pigment and the filler in the non-surface layer coating.
The filler is insoluble in the coating and is uniformly dispersible.
The invention has the following technical effects:
1. the wear-resistant resin is added into the coating, so that the wear resistance of the material can be initially improved.
2. Besides adding wear-resistant resin for modification, the invention also improves the wear resistance of the non-stick coating by strictly controlling the particle size distribution of the pigment and filler. In the invention, the particle size distribution of the pigment and filler is controlled with high accuracy and is more reasonable. Long-term research by the team of the invention finds that reasonable particle size distribution is beneficial to close packing of powder, and the reason is as follows: on one hand, under certain conditions, small particles play a role of a ball bearing in the powder accumulation process, so that the relative movement of the large particles and the small particles in the powder at certain positions is facilitated, and the accumulation performance is improved; on the other hand, in the stacking process, small particles are easy to fill in gaps formed by large particles, so that the powder is more tightly stacked. Therefore, the invention adds the thermoplastic special resin with stronger wear resistance and the inorganic filler with different grain diameters into the non-stick coating, and strictly controls the grain diameter distribution (by controlling the nonuniform coefficient Cu and the curvature coefficient Cc), so that the grains in the coating are combined together to form a compact, flexible and hard PTFE composite coating. On the basis, the proportion of the resin and the pigment and the filler is adjusted, so that the top coating paint has excellent wear resistance, keeps the original non-stick performance, and has better interlayer bonding force with the non-top coating. The filling modification is simple and effective in operation, various performance advantages of PTFE are kept, and the durability defect of the traditional non-stick coating is made up by utilizing the complementary effect of the advantages of the filler and the PTFE.
In the prior art, although the particle size of the filler in the coating is studied, the research on the particle size is not deep enough and only stays on the surface, so that the application of the particle size control of the filler in the non-stick coating for the cooker is not enough, and the technical effect is not as expected. The invention carries out more intensive research on the aspect, and under the condition of combining a large number of experiments theoretically, the obtained coating is good in non-stick property and greatly improved in wear resistance after being cured under the condition that the particle size of the pigment and filler in the coating simultaneously meets the conditions that the nonuniform coefficient Cu is more than 5 and the curvature coefficient Cc is 1-3. The maximum grain diameter of the surface layer is smaller than that of the non-surface layer, so that the surface layer pigment and filler can be better embedded into gaps on the surface of the non-surface layer, the compactness of the pigment and filler can be increased, the interlayer adhesion is enhanced, and meanwhile, the fact that the surface layer Cc basically cannot deviate on the premise that the non-surface layer Cc is controlled to be 1-3 is found in the experimental process. In order to simplify the process, the topcoat coating is controlled by Cu only, and the non-topcoat is controlled by Cu and Cc.
In addition, the grading theory is applied to the cooker coating, and compared with the concrete field, the cooker coating has wider performance. The thickness of the cooker coating is generally dozens of microns, and the close stacking of the particles can not only enhance the scratch resistance of the coating, but also has predictability for improving the hardness and the corrosion resistance.
Preferably, the pigment is one or more of titanium dioxide, carbon black, graphite, titanium nickel yellow, titanium cobalt green, cobalt blue, copper chromium black, iron oxide and mica coated with titanium dioxide.
Preferably, the filler is one or more of silicate, bentonite, aluminum boride whisker, nano calcium silicate, nano whisker silicon, silicon carbide, nano alumina and superfine quartz powder.
Preferably, the particle size of the pigment and the filler is 0.02-25 μm.
Besides the strict control of the particle size distribution of the pigment and filler, the limitation of the particle size range of the pigment and filler is very critical, and after the pigment and filler are combined, the pigment and filler can take effect synergistically, so that the wear resistance is further improved.
Preferably, the bonding resin is selected from one or more of polyether sulfone, polyphenylene sulfide and polyamide imide.
Preferably, the wear-resistant resin is polyether ether ketone.
Preferably, the auxiliary agent comprises one or more of a cosolvent, a defoaming agent, a pH regulator, a film forming agent, a thickening agent, deionized water, a wetting agent and a dispersing agent.
Preferably, the cosolvent is selected from one or more of deionized water, methanol, ethanol, 2-propanol, 1-butanol and diacetone alcohol, propylene glycol, glycerol, gamma-butyrolactone, epsilon-caprolactone, N-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide and N, N-dimethylformamide;
the defoamer is selected from silicone-based defoamers and non-silicone-based defoamers;
the pH regulator is one or more selected from triethanolamine, 10wt% ammonia water solution, dimethylethylamine and AMP-95;
the film forming agent is one or more of dodecyl alcohol ester, triethylene glycol monoethyl ether, propylene glycol butyl ether, dipropylene glycol monobutyl ether and diacetone alcohol;
the thickening agent is selected from one or two of cellulose ether and bentonite;
the wetting agent is selected from organosilicon wetting agents;
the dispersant is selected from modified polyurethane dispersants and acrylic block copolymers.
Preferably, the auxiliary agent comprises one or more of diethylamine and polymer solution containing urea carbamate functional groups; the auxiliary agent of the top coating comprises one or more of polyether modified polysiloxane compound and polyether modified polydimethylsiloxane copolymer.
Because the paint contains a large amount of pigment and filler, the viscosity of the paint in the storage process becomes unstable enough, and the phenomena of caking, delamination and gelation are generated. Therefore, the invention adds the polymer solution containing the diethylamine and the urea carbamate functional group in the formula, which can effectively avoid the phenomenon.
In addition, due to the existence of a large amount of pigment and filler in the coating, burrs are more easily formed on the surface of the coating after the coating is brushed and cured, so that the surface of a coating is not smooth enough, and the use is influenced. Therefore, the polyether modified polysiloxane compound and the polyether modified polydimethylsiloxane copolymer are added into the formula of the surface layer coating, so that the flow property of the coating after being coated can be effectively improved, and the surface formed after the coating is cured is smoother. But the non-surface layer coating does not contain the auxiliary agent, because the surface of the non-surface layer is rough, the adhesive force of the surface layer on the non-surface layer is higher, and the combination of the surface layer and the non-surface layer interface is more facilitated.
The preparation method of the high wear-resistant non-stick coating special for cookers comprises the following steps: uniformly dispersing pigments and fillers with different particle sizes in a hydroalcoholic solution according to a ratio, adding wear-resistant resin and bonding resin, and uniformly dispersing to obtain a first mixture; adding the polytetrafluoroethylene emulsion and the rest of the auxiliary agent, and mixing for 0.5-5 h to obtain the high-wear-resistance non-stick coating.
Compared with the prior art, the invention has the beneficial effects that: the wear-resistant non-stick coating disclosed by the invention has excellent non-stick property and better wear resistance, can effectively resist scraping of a pancake turner, and is long in service life.
Detailed Description
The present invention will be further described with reference to the following examples.
General examples
A high wear-resistant non-stick coating special for cookers comprises a surface coating and a non-surface coating;
the surface layer coating comprises the following components in percentage by weight:
40-60% of polytetrafluoroethylene emulsion,
5 to 20 percent of bonding resin,
2-8% of wear-resistant resin,
3 to 25 percent of pigment,
10 to 20 percent of filler,
5-35% of an auxiliary agent.
The non-surface layer coating comprises the following components in percentage by weight:
20 to 50 percent of polytetrafluoroethylene emulsion,
5 to 30 percent of bonding resin,
2-15% of wear-resistant resin,
5 to 35 percent of pigment,
10 to 38 percent of filler,
20-40% of an auxiliary agent;
in the surface coating, the nonuniform coefficient Cu of the grain diameters of the pigment and the filler is more than 5;
in the non-surface layer coating, the particle sizes of the pigment and the filler adopt discontinuous gradation, the nonuniform coefficient Cu is more than 5, and the curvature coefficient Cc is 1-3; wherein Cu is d60/d10，Cc＝d30 2/d60*d10；
The particle sizes are arranged from small to large, d10Particle size at 10% of the total weight of pigment and filler, d60Particle size at 60% of the total weight of pigment and filler, d30Particle size at 30% of the total weight of pigment and filler;
the grain diameters of the pigment and the filler in the surface layer coating are smaller than those of the pigment and the filler in the non-surface layer coating;
the filler is insoluble in the coating and is uniformly dispersible.
Preferably, the pigment is one or more of titanium dioxide, carbon black, graphite, titanium nickel yellow, titanium cobalt green, cobalt blue, copper chromium black, iron oxide and mica coated with titanium dioxide.
Preferably, the filler is one or more of silicate, bentonite, aluminum boride whisker, nano calcium silicate, nano whisker silicon, silicon carbide, nano alumina and superfine quartz powder.
Preferably, the particle size of the pigment and the filler is 0.02-25 μm.
Preferably, the bonding resin is selected from one or more of polyether sulfone, polyphenylene sulfide and polyamide imide.
Preferably, the wear-resistant resin is polyether ether ketone.
Preferably, the auxiliary agent comprises one or more of a cosolvent, a defoaming agent, a pH regulator, a film forming agent, a thickening agent, deionized water, a wetting agent and a dispersing agent.
Preferably, the cosolvent is selected from one or more of deionized water, methanol, ethanol, 2-propanol, 1-butanol and diacetone alcohol, propylene glycol, glycerol, gamma-butyrolactone, epsilon-caprolactone, N-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide and N, N-dimethylformamide;
preferably, the defoamer is selected from silicone-based defoamers and non-silicone-based defoamers;
preferably, the pH regulator is selected from one or more of triethanolamine, 10wt% ammonia water solution, dimethylethylamine and AMP-95;
preferably, the film forming agent is one or more selected from dodecyl alcohol ester, triethylene glycol monoethyl ether, propylene glycol butyl ether, dipropylene glycol monobutyl ether and diacetone alcohol;
preferably, the thickening agent is selected from one or two of cellulose ether and bentonite;
preferably, the wetting agent is selected from silicone-based wetting agents;
preferably, the dispersant is selected from modified polyurethane dispersants and acrylic block copolymers.
Preferably, the auxiliary agent comprises one or more of diethylamine and polymer solution containing urea carbamate functional groups; the auxiliary agent of the top coating comprises one or more of polyether modified polysiloxane compound and polyether modified polydimethylsiloxane copolymer.
The preparation method of the high wear-resistant non-stick coating special for cookers comprises the following steps: uniformly dispersing pigments and fillers with different particle sizes in a hydroalcoholic solution according to a ratio, adding wear-resistant resin and bonding resin, and uniformly dispersing to obtain a first mixture; adding the polytetrafluoroethylene emulsion and the rest of the auxiliary agent, and mixing for 0.5-5 h to obtain the high-wear-resistance non-stick coating.
Examples 1 to 3
Comparative example 1
Surface layer: 45g of PTFE emulsion, 8g of PES bonding resin, 8g of carbon black, 14g of silicon carbide and 25g of other auxiliary agents are uniformly mixed to form a surface layer, wherein the grain diameter of pigments and fillers is about 20 mu m, Cu is 1, and the mixture is uniform and not classified.
Non-surface layer: 30g of PTFE emulsion, 12g of PES bonding resin, 8g of carbon black, 16g of silicon carbide and 34g of other auxiliary agents are uniformly mixed to form a non-surface layer, wherein the grain diameter of pigments and fillers is about 20 mu m, Cu is 1, and the mixture is uniform and not classified.
Comparative example 2
Surface layer: 45g of PTFE emulsion, 8g of PES binder resin, 3.9g of silicon carbide (200nm), 7.8g of silicon carbide (400nm), 11.7g of silicon carbide (800nm), 15.6g of carbon black (1-5 μm), and 25g of other auxiliary agents were mixed uniformly as a top layer, and Cu was 4, in which case Cc was 1.
Non-surface layer: 30g of PTFE emulsion, 12g of PES binder resin, 6.5g of carbon black (3 μm), 2g of silicon carbide (1 μm), 15.5g of silicon carbide (10 μm) and 34g of other auxiliary agents were mixed uniformly to prepare a non-top layer, where Cu was 10 and Cc was 0.9.
Comparative example 3
Surface layer: 45g of PTFE emulsion, 8g of PES binder resin, 3.9g of silicon carbide (200nm), 19.5g of silicon carbide (800nm), 15.6g of carbon black (1 to 5 μm), and 25g of other auxiliaries were mixed uniformly as a top layer, Cu was 4, and Cc was 3.2
Non-surface layer: 30g of PTFE emulsion, 12g of PES binder resin, 6.5g of carbon black (4 μm), 2g of silicon carbide (1 μm), 8.5g of silicon carbide (4 μm), 7g of silicon carbide (10 μm) and 34g of other auxiliary agents were mixed uniformly to prepare a non-facing layer, and Cu was 4, and Cc was 4.
And (3) performance testing:
non-stick performance test: heating the cooker with the coating to 90 ℃, and directly placing a shelled raw egg on the surface of the cooker; heating is kept until the eggs are completely fried, a wooden shovel is used for slightly pushing the eggs, and if the eggs are naturally peeled off, the non-stick property is excellent; slightly adhering (the adhering area is less than 30 percent), and the non-adhesiveness is normal; the adhesion was severe (adhesion area was more than 60%), and even could not be peeled off, the non-tackiness was poor.
a acid resistance test: the plate sprayed with the coating is soaked in a 3% acetic acid solution, and is tested at the temperature of 23 +/-2 ℃ until the paint film is abnormal, and the observation time is long.
b saline tolerance test: the plate sprayed with the coating is soaked in 10% NaCl solution and tested at 23 +/-2 ℃ until the paint film is abnormal, and the observation time is long.
Analysis of the data in the table shows that the hardness, wear resistance, acid resistance and salt water resistance of examples 1-3 are all significantly better than those of comparative examples, and when the values of Cu and Cc in comparative examples 2-3 are only slightly beyond the range defined by the present invention, the corresponding corrosion resistance is greatly reduced.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (6)
1. A high wear-resistant non-stick coating special for cookers is characterized in that: the paint consists of surface paint and non-surface paint;
the surface layer coating comprises the following components in percentage by weight:
40-60% of polytetrafluoroethylene emulsion,
5 to 20 percent of bonding resin,
2-8% of wear-resistant resin,
3 to 25 percent of pigment,
10 to 20 percent of filler,
5-35% of an auxiliary agent;
the non-surface layer coating comprises the following components in percentage by weight:
20 to 50 percent of polytetrafluoroethylene emulsion,
5 to 30 percent of bonding resin,
2-15% of wear-resistant resin,
5 to 35 percent of pigment,
10 to 38 percent of filler,
20-40% of an auxiliary agent;
the auxiliary agent comprises diethylamine; the auxiliary agent of the surface coating comprises a polyether modified polysiloxane compound;
the bonding resin is selected from one or more of polyether sulfone, polyphenylene sulfide and polyamide imide;
the wear-resistant resin is polyether-ether-ketone;
in the surface coating, the nonuniform coefficient of the grain diameters of the pigment and the filler is more than 25 and more than 6;
in the non-surface layer coating, the particle sizes of the pigment and the filler adopt discontinuous gradation, the uneven coefficient is more than 50 and more than 25, and the curvature coefficient Cc = 1.25-2.5; wherein Cu = d60/d10，Cc=d30 2/d60*d10；
The particle sizes are arranged from small to large, d10Particle size at 10% of the total weight of pigment and filler, d60Particle size at 60% of the total weight of pigment and filler, d30Particle size at 30% of the total weight of pigment and filler;
the particle size of the pigment and the filler is 0.02-25 mu m;
the grain diameters of the pigment and the filler in the surface layer coating are smaller than those of the pigment and the filler in the non-surface layer coating;
the filler is insoluble in the coating and is uniformly dispersible.
2. The high wear-resistant non-stick paint special for cookers in claim 1, wherein the pigment is one or more of titanium dioxide, carbon black, graphite, titanium nickel yellow, titanium cobalt green, cobalt blue, copper chromium black, iron oxide, mica coated with titanium dioxide.
3. The high wear-resistant non-stick coating special for cookers according to claim 1, wherein the filler is one or more of silicate, bentonite, aluminum boride whisker, nano calcium silicate, nano whisker silicon, silicon carbide, nano alumina and superfine quartz powder.
4. The high-wear-resistance non-stick paint special for cookers in claim 1, wherein the auxiliary agent comprises one or more of a cosolvent, a defoamer, a pH regulator, a film forming agent, a thickening agent, deionized water, a wetting agent and a dispersing agent.
5. The high abrasion resistant non-stick coating material for cookware specific to the cooker according to claim 4 wherein the co-solvent is selected from one or more of deionized water, methanol, ethanol, 2-propanol, 1-butanol and diacetone alcohol, propylene glycol, glycerol, γ -butyrolactone, ε -caprolactone, N-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide and N, N-dimethylformamide;
the defoamer is selected from silicone-based defoamers and non-silicone-based defoamers;
the pH regulator is one or more selected from triethanolamine, 10wt% ammonia water solution, dimethylethylamine and AMP-95;
the film forming agent is one or more of dodecyl alcohol ester, triethylene glycol monoethyl ether, propylene glycol butyl ether, dipropylene glycol monobutyl ether and diacetone alcohol;
the thickening agent is selected from one or two of cellulose ether and bentonite;
the wetting agent is selected from organosilicon wetting agents;
the dispersant is selected from modified polyurethane dispersants and acrylic block copolymers.
6. A method for preparing the high wear-resistant non-stick coating special for cookers according to claim 1, characterized by comprising the following steps: uniformly dispersing pigments and fillers with different particle sizes in a hydroalcoholic solution according to a ratio, adding wear-resistant resin and bonding resin, and uniformly dispersing to obtain a first mixture; adding the polytetrafluoroethylene emulsion and the rest of the auxiliary agent, and mixing to obtain the high-wear-resistance non-stick coating.
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| CN109880453A (en) * | 2019-01-30 | 2019-06-14 | 浙江乐太新材料有限公司 | A method of preparing durable non-sticking cooking utensils coating |
| CN110591551A (en) * | 2019-08-20 | 2019-12-20 | 宁波喜尔美厨房用品有限公司 | Preparation method of high-strength high-wear-resistance non-stick pan coating |
| CN111808485A (en) * | 2020-07-20 | 2020-10-23 | 江南大学 | Wear-resistant high-temperature-resistant composite non-stick coating |
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