CN107964329B - Production method of high-temperature-resistant non-stick coating - Google Patents

Production method of high-temperature-resistant non-stick coating Download PDF

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CN107964329B
CN107964329B CN201710983705.3A CN201710983705A CN107964329B CN 107964329 B CN107964329 B CN 107964329B CN 201710983705 A CN201710983705 A CN 201710983705A CN 107964329 B CN107964329 B CN 107964329B
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resistant non
stick coating
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CN107964329A (en
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张和明
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Zhejiang Genyuan Coating Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/14Polycondensates modified by chemical after-treatment
    • C08G59/1405Polycondensates modified by chemical after-treatment with inorganic compounds
    • C08G59/1422Polycondensates modified by chemical after-treatment with inorganic compounds containing phosphorus
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00Crosslinking

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Abstract

The invention relates to a production method of a high-temperature-resistant non-stick coating, which comprises the following steps: putting the modified 609 epoxy resin liquid, the organic silicon resin, the phenylated amino resin, the acetal amino resin and the coupling agent into a paint mixing kettle, and controlling the stirring speed to be 800-1000 RPM; adding the pearlescent base material, the polytetrafluoroethylene powder and the epoxy carbon black slurry under the stirring condition, and after the feeding is finished, increasing the dispersion rotating speed and controlling the dispersion rotating speed at 1000-1500RPM until the fineness meets the requirement; and after the fineness meets the requirement, controlling the stirring rotating speed at 500-800RPM, adding the pre-mixed coating aluminum silver paste and PMA mixed paste, and adjusting the viscosity of the paint by using n-butyl alcohol and cyclohexanone. The high-temperature resistant non-stick coating produced by the method is non-toxic, strong in adhesive force, good in machining performance and good in high-temperature resistant non-stick performance.

Description

Production method of high-temperature-resistant non-stick coating
Technical Field
The invention relates to a manufacturing method of a coating, in particular to a production method of a high-temperature-resistant non-stick coating.
Background
In the food culture of western countries, baking molds having non-stick properties are widely used for food processing such as baking trays for bread, molds for cakes, coffee cups, and the like. With the continuous development of national economy and the improvement of the living standard of people, the use amount of non-stick appliances in China is increased dramatically. The Teflon coating used internationally and domestically at present has the following defects when being used as a non-stick coating:
1. the chemical components of teflon, namely tetrafluoroethylene, are subjected to ash cracking at high temperature to generate highly toxic byproducts, namely fluorophosphone and perfluoroisobutylene, which are banned by the U.S. government;
2. the Teflon tetrafluoroethylene coating can be formed into a film only by baking at high temperature (300 ℃), so that the energy consumption is too high, and the Teflon tetrafluoroethylene coating is not suitable for being used in coil coating lines and sheet coating lines.
3. The mechanical processing performance of the coating film is poor, but the Teflon coating can be sprayed after the tool is processed and then is subjected to acid pickling and phosphating, so that the production process cost is increased and the environmental pollution is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a production method of a high-temperature-resistant non-stick coating, and the high-temperature-resistant non-stick coating produced by the method is non-toxic, meets the food sanitation requirement, and has strong adhesive force, good machinability and good high-temperature-resistant non-stick performance.
In order to solve the technical problem, the invention provides a production method of a high-temperature-resistant non-stick coating, which comprises the following steps:
step 1, 609 epoxy resin neutralization treatment, namely firstly mixing xylene, butanol and phosphoric acid, then putting the mixture into a reaction pot, then putting 609 epoxy resin into the reaction pot, heating the pot at 160-170 ℃ for stirring after 609 epoxy resin is completely dissolved, keeping the temperature of xylene at 180-190 ℃ for refluxing for 2 hours, immediately cooling and discharging, and filtering and packaging for later use;
step 2, mixing and dispersing, namely putting the modified 609 epoxy resin liquid obtained in the step 1, the organic silicon resin, the phenylated amino resin, the acetal amino resin and the coupling agent into a paint mixing kettle, and controlling the stirring speed to be 800-1000 RPM; adding the pearlescent base material, the polytetrafluoroethylene powder and the epoxy carbon black slurry under the stirring condition, and after the feeding is finished, increasing the dispersion rotating speed and controlling the dispersion rotating speed at 1000-1500RPM until the fineness meets the requirement;
step 3, low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding pre-mixed coating aluminum silver paste and PMA mixed paste, and adjusting the viscosity of the paint by using n-butyl alcohol and cyclohexanone;
and 4, filtering to obtain the high-temperature-resistant non-stick coating.
As an improvement of the above technical solution, in the step 1, 609 the epoxy resin is used in an amount of 70 parts by weight, xylene is used in an amount of 20 parts by weight, butanol is used in an amount of 10 parts by weight, and phosphoric acid is used in an amount of 0.013 parts by weight.
As an improvement of the above technical solution, in the step 2, the modified 609 epoxy resin solution is used in an amount of 35 to 42 parts by weight; the dosage of the organic silicon resin liquid is 8-12 parts by weight; the dosage of the phenylated amino resin is 3-5 parts by weight; the usage of the acetal amino resin is 3-6 weight parts; the amount of the coupling agent is 0.2-0.6 weight part.
As an improvement of the above technical solution, wherein the coupling agent is a silane coupling agent.
As an improvement of the above technical solution, in the step 2, the pearlescent base material is used in an amount of 15 to 25 parts by weight; 3-6 parts of polytetrafluoroethylene powder; the epoxy carbon black slurry is used in 0.2-0.6 weight portions.
As an improvement of the above technical scheme, in the step 3, the amount of the coated aluminum silver paste is 4 to 8 parts by weight; the amount of PMA is 2-5 weight parts.
As an improvement of the above technical scheme, in the step 3, the amount of the n-butanol is 2 to 3 parts by weight; the using amount of the cyclohexanone is 1-3 parts by weight.
The silicone resin in the formula can be adjusted by different types of silicone resins according to different plate materials and processing requirements, and can be crosslinked with the phenylated amino resin (230 ℃) at high temperature to form a paint film, and the paint film has the advantages of strong adhesive force, boiling resistance, flexibility, good machinability, high temperature resistance and the like.
The carbon black slurry in the formula is a coloring pigment, and a Z111 product which is produced by Shanghai Denyan original company and has high wear resistance and high temperature resistance (300 ℃) is adopted, so that the auxiliary effect of the wear resistance of the surface of a paint film is achieved.
The pearlescent base material has the advantages of paint film surface abrasion resistance, long-acting non-adhesiveness and high-temperature stability in the formula, and adopts 100G products of south Korean CQV company.
The polytetrafluoroethylene powder, namely PTFE micropowder wax, plays a role in improving the abrasion resistance, long-acting non-adhesiveness and high-temperature stability of the surface of a paint film in the formula.
The n-butyl alcohol, PMA and cyclohexanone play a role in adjusting the construction viscosity of the paint and improving the leveling property of a paint film in the formula.
The coupling agent in the formula can improve the adhesive force of the paint film on the metal surface and improve the density and water resistance of the paint film.
Compared with the prior art, the invention has the following advantages:
the invention has the advantages that 609 epoxy resin is adopted, phosphoric acid is added, and dimethylbenzene is used as a reflux solvent for phosphoric acid neutralization treatment at the temperature of 180-190 ℃, so that low-molecular free chemicals are eliminated, and the adhesive force, flexibility and boiling resistance of the epoxy resin are improved.
The invention has the second advantage that the modified 609 epoxy resin, the phenylated amino resin, the acetal amino resin, the organic silicon high-temperature resistant resin and the silane coupling agent are adopted as the non-stick coating base material, so that the corrosion resistance, the water resistance, the high temperature resistance, the mechanical processability and the reliability of food safety of a coating film are ensured.
The invention has the third advantage that the pearly-lustre base material is adopted to replace most of tetrafluoroethylene resin. The pearlescent base material has the advantages of high temperature resistance, small friction coefficient and corrosion resistance, so that the non-stick effect is effective for a long time, and simultaneously, the food safety requirement is met.
The paint obtained by the production method can be directly precoated on steel plates and aluminum plates of coiled materials and sheets and then processed into baking tools, so that the traditional production process flow is reduced, and the problem of environmental pollution is greatly reduced.
The invention has the fifth advantage that the traditional Teflon coating needs to be dried at 300 ℃ for 1 hour, and has poor machining performance, so roll coating and sheet coating operations cannot be adopted. The drying temperature of the coating obtained by the production method is 230 ℃, the drying only needs 2 minutes, and the coating is very suitable for the process requirements of coil coating and sheet coating at present.
In conclusion, aiming at the defects of the prior art, the coating which is nontoxic, meets the food sanitation requirement, has strong adhesive force, good mechanical processability and good high-temperature resistance and non-stick performance is obtained by the production method, is precoated on steel plates, aluminum plates, stainless steel coiled materials and sheets and is used for processing the surfaces of baking tools such as baking trays, cake molds, baking oven frames and the like.
Detailed Description
The invention relates to a production method of a high-temperature-resistant non-stick coating, which comprises the following steps:
step 1, 609 epoxy resin neutralization treatment, namely firstly mixing xylene, butanol and phosphoric acid, then putting the mixture into a reaction pot, then putting 609 epoxy resin, heating the mixture in the reaction pot at 160-170 ℃ for stirring after 609 epoxy resin is completely dissolved, keeping the temperature of xylene at 180-190 ℃ for refluxing for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
Wherein, the 609 epoxy resin is 70 parts by weight, the xylene is 20 parts by weight, the butanol is 10 parts by weight, and the phosphoric acid is 0.013 parts by weight.
Step 2, mixing and dispersing, namely putting the modified 609 epoxy resin liquid obtained in the step 1, the organic silicon resin, the phenylated amino resin, the acetal amino resin and the coupling agent into a paint mixing kettle, and controlling the stirring speed to be 800-1000 RPM; the pearly-lustre base material, the polytetrafluoroethylene powder and the epoxy carbon black slurry are added under the stirring condition, and after the materials are added, the dispersion rotating speed is improved and controlled at 1000-1500RPM until the fineness meets the requirement.
And 3, low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding the pre-mixed coating aluminum silver paste and PMA mixed paste, adjusting the viscosity of the paint by using n-butyl alcohol and cyclohexanone, and strictly preventing the high-speed dispersion from damaging the surface of the coating aluminum silver paste, otherwise causing silver loss and coarsening of a paint film and the like.
And 4, filtering to obtain the high-temperature-resistant non-stick coating.
And 5, packaging the qualified product to obtain a finished product.
In the above procedure, the amounts of the components are given in the following table:
name of material The contents (parts by weight) in the formula
70 percent of modified 609 epoxy resin solution 35-42
65 percent of organic silicon resin 8-12
Coated aluminum paste 4-8
Epoxy carbon black slurry 10% 0.2-0.6
Pearlescent base stock 15-25
60 percent of phenylated amino resin 3-5
Polytetrafluoroethylene powder 3-6
N-butanol 2-3
PMA 2-5
Cyclohexanone 1-3
Coupling agent 0.2-0.6
Acetal amino resin 70% 3-6
Example 1
609 epoxy resin neutralization treatment, namely firstly mixing 20kg of dimethylbenzene, 10kg of butanol and 0.013kg of phosphoric acid, then putting into a reaction pot, then putting 70kg of 609 epoxy resin, heating the pot at 160 ℃ and 170 ℃ until the 609 epoxy resin is completely dissolved, starting stirring, carrying out heat preservation on the dimethylbenzene at 180-190 ℃ as reflux for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
Mixing and dispersing, namely firstly putting 35kg of the modified 609 epoxy resin liquid obtained in the step, 10kg of organic silicon resin, 3kg of phenylamine resin, 4kg of acetal amine resin and 0.3kg of silane coupling agent into a paint mixing kettle, wherein the stirring speed is controlled at 800-1000 RPM.
Under the condition of stirring, 15kg of pearlescent base material, 3.5kg of polytetrafluoroethylene powder and 0.2kg of epoxy carbon black slurry are added, and after the materials are added, the dispersion rotating speed is increased and controlled at 1000-plus-1500 RPM until the fineness reaches the requirement.
And (3) low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding 4kg of previously mixed coated aluminum silver paste and 2.5kg of PMA mixed paste, adjusting the viscosity of the paint by using 2kg of n-butyl alcohol and 1.2kg of cyclohexanone, and strictly preventing the high-speed dispersion from damaging the surface of the coated aluminum silver paste, otherwise causing silver falling and coarse returning of a paint film and the like.
Filtering to obtain the high-temperature resistant non-stick coating, and packaging to obtain a finished product after the detection is qualified.
Example 2
609 epoxy resin neutralization treatment, namely firstly mixing 20kg of dimethylbenzene, 10kg of butanol and 0.013kg of phosphoric acid, then putting into a reaction pot, then putting 70kg of 609 epoxy resin, heating the pot at 160 ℃ and 170 ℃ until the 609 epoxy resin is completely dissolved, starting stirring, carrying out heat preservation on the dimethylbenzene at 180-190 ℃ as reflux for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
Mixing and dispersing, namely firstly putting 40kg of the modified 609 epoxy resin liquid obtained in the step, 10kg of organic silicon resin, 4kg of phenylamine resin, 5kg of acetal amine resin and 0.5kg of silane coupling agent into a paint mixing kettle, wherein the stirring speed is controlled to be 800-1000 RPM.
Under the condition of stirring, 19kg of pearlescent base material, 5kg of polytetrafluoroethylene powder and 0.5kg of epoxy carbon black slurry are added, and after the materials are added, the dispersion rotating speed is increased and controlled at 1500RPM (revolution per minute) of 1000 plus materials until the fineness meets the requirement.
And (3) low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding 6kg of previously mixed coating aluminum silver paste and 4kg of PMA mixed paste, adjusting the viscosity of the paint by using 2.5kg of n-butyl alcohol and 2kg of cyclohexanone, strictly prohibiting high-speed dispersing to prevent the surface of the coating aluminum silver paste from being damaged, otherwise causing silver falling and coarse returning of a paint film and the like.
Filtering to obtain the high-temperature resistant non-stick coating, and packaging to obtain a finished product after the detection is qualified.
Example 3
609 epoxy resin neutralization treatment, namely firstly mixing 20kg of dimethylbenzene, 10kg of butanol and 0.013kg of phosphoric acid, then putting into a reaction pot, then putting 70kg of 609 epoxy resin, heating the pot at 160 ℃ and 170 ℃ until the 609 epoxy resin is completely dissolved, starting stirring, carrying out heat preservation on the dimethylbenzene at 180-190 ℃ as reflux for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
And (3) mixing and dispersing, namely putting 42kg of the modified 609 epoxy resin liquid obtained in the step, 12kg of organic silicon resin, 4.5kg of phenylamine resin, 4kg of acetal amine resin and 0.6kg of silane coupling agent into a paint mixing kettle, wherein the stirring speed is controlled to be 800-1000 RPM.
Under the condition of stirring, 25kg of pearlescent base material, 6kg of polytetrafluoroethylene powder and 0.5kg of epoxy carbon black slurry are added, and after the materials are added, the dispersion rotating speed is increased and controlled at 1500RPM (revolution per minute) of 1000 plus materials until the fineness meets the requirement.
And (3) low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding 7kg of previously mixed coated aluminum silver paste and 4kg of PMA mixed paste, adjusting the viscosity of the paint by using 3kg of n-butyl alcohol and 2kg of cyclohexanone, and strictly prohibiting high-speed dispersing to prevent the surface of the coated aluminum silver paste from being damaged, otherwise causing silver loss and coarse returning of a paint film and the like.
Filtering to obtain the high-temperature resistant non-stick coating, and packaging to obtain a finished product after the detection is qualified.
Example 4
609 epoxy resin neutralization treatment, namely firstly mixing 20kg of dimethylbenzene, 10kg of butanol and 0.013kg of phosphoric acid, then putting into a reaction pot, then putting 70kg of 609 epoxy resin, heating the pot at 160 ℃ and 170 ℃ until the 609 epoxy resin is completely dissolved, starting stirring, carrying out heat preservation on the dimethylbenzene at 180-190 ℃ as reflux for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
Mixing and dispersing, namely firstly putting 36kg of the modified 609 epoxy resin liquid obtained in the step, 9kg of organic silicon resin, 5kg of phenylamine resin, 6kg of acetal amine resin and 0.4kg of silane coupling agent into a paint mixing kettle, wherein the stirring speed is controlled at 800-1000 RPM.
Under the condition of stirring, 22kg of pearl base material, 4kg of polytetrafluoroethylene powder and 0.6kg of epoxy carbon black slurry are added, and after the materials are added, the dispersion rotating speed is increased and controlled at 1500RPM (revolution per minute) of 1000 plus materials until the fineness meets the requirement.
And (3) low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM of 500 plus materials, adding 8kg of previously mixed coating aluminum silver paste and 5kg of PMA mixed paste, adjusting the viscosity of the paint by using 2.5kg of n-butyl alcohol and 2kg of cyclohexanone, strictly prohibiting high-speed dispersing to prevent the surface of the coating aluminum silver paste from being damaged, otherwise causing silver falling and coarse returning of a paint film and the like.
Filtering to obtain the high-temperature resistant non-stick coating, and packaging to obtain a finished product after the detection is qualified.
Example 5
609 epoxy resin neutralization treatment, namely firstly mixing 20kg of dimethylbenzene, 10kg of butanol and 0.013kg of phosphoric acid, then putting into a reaction pot, then putting 70kg of 609 epoxy resin, heating the pot at 160 ℃ and 170 ℃ until the 609 epoxy resin is completely dissolved, starting stirring, carrying out heat preservation on the dimethylbenzene at 180-190 ℃ as reflux for 2 hours, immediately cooling and discharging, and filtering and packaging for later use.
Mixing and dispersing, namely putting 38kg of the modified 609 epoxy resin liquid obtained in the step, 9kg of organic silicon resin, 3kg of phenylamine resin, 3kg of acetal amine resin and 0.2kg of silane coupling agent into a paint mixing kettle, wherein the stirring speed is controlled to be 800-1000 RPM.
Under the condition of stirring, 15kg of pearlescent base material, 3kg of polytetrafluoroethylene powder and 0.2kg of epoxy carbon black slurry are added, and after the materials are added, the dispersion rotating speed is increased and controlled at 1500RPM (revolution per minute) of 1000 plus materials until the fineness meets the requirement.
And (3) low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding 4kg of previously mixed coating aluminum silver paste and 2kg of PMA mixed paste, adjusting the viscosity of the paint by using 2kg of n-butyl alcohol and 3kg of cyclohexanone, strictly prohibiting high-speed dispersing to prevent the surface of the coating aluminum silver paste from being damaged, otherwise causing silver loss and coarse returning of a paint film and the like.
Filtering to obtain the high-temperature resistant non-stick coating, and packaging to obtain a finished product after the detection is qualified.
The high-temperature resistant non-stick coating obtained in the above example was tested, and the results of the tests are shown in the following table:
the high-temperature-resistant non-stick coating obtained by the production method can be coated by adopting a color steel plate process flow and can also be coated by adopting an iron printing plate coating process flow. The high-temperature-resistant non-stick paint which is coated on the metal plate and can be processed in a stretching way is formed by crosslinking modified 609 epoxy resin with acetal amino resin (230 ℃) at high temperature in a formula to form a paint film, and has the advantages of strong adhesive force, boiling resistance, hard paint film, good machinability and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A production method of a high-temperature-resistant non-stick coating comprises the following steps:
step 1, 609 epoxy resin neutralization treatment, namely firstly mixing xylene, butanol and phosphoric acid, then putting the mixture into a reaction pot, then putting 609 epoxy resin into the reaction pot, heating the pot at 160-170 ℃ for stirring after 609 epoxy resin is completely dissolved, keeping the temperature of xylene at 180-190 ℃ for refluxing for 2 hours, immediately cooling and discharging, and filtering and packaging the mixture for later use;
step 2, mixing and dispersing, namely putting the modified 609 epoxy resin liquid obtained in the step 1, the organic silicon resin, the phenylated amino resin, the acetal amino resin and the coupling agent into a paint mixing kettle, and controlling the stirring speed to be 800-1000 RPM; adding the pearlescent base material, the polytetrafluoroethylene powder and the epoxy carbon black slurry under the stirring condition, and after the feeding is finished, increasing the dispersion rotating speed and controlling the dispersion rotating speed at 1000-1500RPM until the fineness meets the requirement; in the step 2, the modified 609 epoxy resin liquid is used in 35-42 parts by weight; the dosage of the organic silicon resin is 8-12 parts by weight; 3-5 parts of phenylated amino resin; the usage amount of the acetal amino resin is 3-6 parts by weight; the dosage of the coupling agent is 0.2 to 0.6 weight portion;
step 3, low-speed mixing and dispersing, namely after the fineness meets the requirement, controlling the stirring rotating speed at 800RPM, adding pre-mixed coating aluminum silver paste and PMA mixed paste, and adjusting the viscosity of the paint by using n-butyl alcohol and cyclohexanone;
and 4, filtering to obtain the high-temperature-resistant non-stick coating.
2. The method for producing a high temperature resistant non-stick coating according to claim 1, wherein: in the step 1, 609 epoxy resin is used in an amount of 70 parts by weight, xylene is used in an amount of 20 parts by weight, butanol is used in an amount of 10 parts by weight, and phosphoric acid is used in an amount of 0.013 parts by weight.
3. The method for producing a high temperature resistant non-stick coating according to claim 1, wherein: the coupling agent is
A silane coupling agent.
4. The method for producing a high temperature resistant non-stick coating according to claim 1, wherein: in the step 2, the dosage of the pearlescent base material is 15-25 parts by weight; 3-6 parts of polytetrafluoroethylene powder; the epoxy carbon black slurry is used in 0.2-0.6 weight portions.
5. The method for producing a high temperature resistant non-stick coating according to claim 1, wherein: in the step 3, the using amount of the coated aluminum silver paste is 4-8 parts by weight; the dosage of PMA mixed slurry is 2-5 weight portions.
6. The method for producing a high temperature resistant non-stick coating according to claim 1, wherein: in the step 3, the using amount of the n-butanol is 2 to 3 parts by weight; the using amount of the cyclohexanone is 1-3 parts by weight.
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