CN112080177A - Heavy-duty anticorrosive fluorocarbon coating and preparation method thereof - Google Patents
Heavy-duty anticorrosive fluorocarbon coating and preparation method thereof Download PDFInfo
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- CN112080177A CN112080177A CN202010907201.5A CN202010907201A CN112080177A CN 112080177 A CN112080177 A CN 112080177A CN 202010907201 A CN202010907201 A CN 202010907201A CN 112080177 A CN112080177 A CN 112080177A
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- C09D7/20—Diluents or solvents
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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
- 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
- C09D7/65—Additives macromolecular
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a heavy-duty anticorrosive fluorocarbon coating and a preparation method thereof, wherein the heavy-duty fluorocarbon coating is prepared from the following raw materials in parts by mass: 10-25 parts of deionized water, 35-50 parts of polytetrafluoroethylene, 15-25 parts of polypropylene, 5-10 parts of molybdenum disulfide, 1-5 parts of flatting agent, 0.5-2 parts of dispersing agent, 0.2-1 part of anti-settling agent and 15-25 parts of pigment. The heavy-duty anticorrosive fluorocarbon coating is prepared by premixing, high-speed dispersing and filtering. The heavy-duty anticorrosive fluorocarbon coating provided by the invention has the characteristics of good weather resistance, good corrosion resistance, high adhesive force and good stability, and solves the problems of more organic volatile matters, high pollution and high toxicity of an oily solvent by using water as the solvent, and the preparation method is simple and low in cost.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, in particular to a heavy-duty anticorrosive fluorocarbon coating and a preparation method thereof.
Background
The coating taking fluorocarbon resin as a main film forming substance is called as fluorocarbon coating, fluorocarbon polymer has short fluorocarbon chain and high chain energy, so that the molecular structure is stable, the polarity is low, and fluorine atoms are arranged and tightly arranged on the outer layer of a carbon skeleton, so that the carbon atoms and the carbon chain are prevented from being exposed, and the coating has excellent chemical resistance, corrosion resistance, wear resistance, insulativity, stain resistance and other properties. Therefore, the fluorocarbon resin has very good protective effect under various weather conditions, and is widely applied. However, most of the existing fluorocarbon coatings are oily fluorocarbon coatings, and the existing fluorocarbon coatings have the disadvantages of many organic volatile matters, high toxicity, high environmental pollution, high construction condition requirement and unstable performance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heavy-duty anticorrosive fluorocarbon coating and a preparation method thereof, wherein the coating is environment-friendly and pollution-free and has excellent anticorrosive performance; the preparation method is simple and practical.
The technical scheme adopted by the invention to solve the technical problem is as follows:
the heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 10-25 parts of deionized water, 35-50 parts of polytetrafluoroethylene, 15-25 parts of polypropylene, 5-10 parts of molybdenum disulfide, 1-5 parts of a flatting agent, 0.5-2 parts of a dispersing agent, 0.2-1 part of an anti-settling agent and 15-25 parts of a pigment.
Compared with the prior art, the heavy-duty anticorrosive fluorocarbon coating adopting the technical scheme has the beneficial effects that:
1) the water dispersion technology is adopted, polytetrafluoroethylene, polypropylene and molybdenum disulfide form a composite water-based film forming substance, the molybdenum disulfide is uniformly distributed in gaps of the film forming substance formed by combining polytetrafluoroethylene and polypropylene resin materials in water, molybdenum disulfide precipitation is avoided, the lubricating property of the molybdenum disulfide can be maximized, the lubricating and wear-resisting properties of the coating are further improved, the adhesion and the bonding force of sulfur atoms in the molybdenum disulfide and the metal surface are quite strong, the wear resistance is improved, the coating also has better chemical stability, the coating can resist corrosion of most of acid and alkali medicines, other materials can be protected, and the materials can be effectively prevented from being oxidized.
2) The addition of a proper amount of auxiliary agent enables the formed water-based fluororesin coating to have the characteristics of good weather resistance, good corrosion resistance, high adhesion and good stability, and the water is used as a solvent, so that the problems of more organic volatile matters, high pollution and high toxicity of an oily solvent are solved.
Further, the leveling agent is fluorocarbon modified polypropylene.
Further, the dispersing agent is polyether modified polysiloxane.
Further, the anti-settling agent is polyamide wax.
Further, the pigment is rutile type titanium dioxide, and the particle size is 1000-1500 meshes.
The preparation method of the heavy-duty anticorrosive fluorocarbon coating comprises the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 dispersing agent, pigment, anti-settling agent and flatting agent into a dispersion cylinder, and dispersing and premixing under the stirring of 200 and 300 revolutions per minute at a low speed to form original color paste;
2) premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 dispersing agent are added into stirring equipment, and stirring and blending are carried out at a low speed of 200 and 300 revolutions per minute to form basic paint slurry;
3) high-speed dispersion: placing the blended basic paint paste and the original color paste in a high-speed dispersion machine for high-speed mixing dispersion at 1000-1500 rpm, and obtaining a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine;
4) and (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
Compared with the prior art, the preparation method adopting the technical scheme has the beneficial effects that: the preparation method is simple, low in cost, environment-friendly and pollution-free.
Further, before the filtering in the step 4), a paint mixing step is also included: and (3) inputting the semi-finished product of the fluororesin coating into a paint mixing tank, and adding a proper amount of color paste according to requirements under the stirring working condition to enable the paint paste to reach the designed color.
Further, the color paste is an aqueous color paste of an iron oxide-based, phthalocyanine-based, carbon black or ultramarine toluidine red pigment.
Further, the stirring time in the step 1) and the step 2) is 20-30 min.
Further, the dispersion time in the step 3) is 30-60 min.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following detailed description will be given for clear and complete description of the technical solution of the present invention.
Example 1
The heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 10 parts of deionized water, 40 parts of polytetrafluoroethylene, 15 parts of polypropylene, 6 parts of molybdenum disulfide, 4 parts of fluorocarbon modified polypropylene, 0.5 part of polyether modified polysiloxane, 0.8 part of polyamide wax and 17 parts of rutile titanium dioxide.
The preparation method of the heavy-duty anticorrosive fluorocarbon coating in the embodiment comprises the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 polyether modified polysiloxane, rutile titanium dioxide, polyamide wax and fluorocarbon modified polypropylene into a dispersion cylinder, dispersing and premixing under the stirring of 300 r/min at a low speed, and stirring for 20min to form the original color paste.
2) Premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 polyether modified polysiloxane are added into a stirring device, stirred and blended at a low speed of 250 revolutions per minute, and stirred for 25 minutes to form basic paint slurry.
3) And (3) high-speed dispersion, namely putting the blended base paint paste and the original color paste into a high-speed dispersion machine for high-speed mixing dispersion at 1000 rpm, wherein the dispersion time is 60min, and obtaining a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine.
4) And (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
In addition, if the paint needs to be toned, before filtering, the semi-finished product of the fluororesin paint is input into a paint mixing tank, and under the stirring working condition, a proper amount of color paste is added according to the requirement, so that the paint paste reaches the designed color, wherein the color paste is water-based color paste of iron oxide series and phthalocyanine series pigments, water-based color paste of carbon black and ultramarine toluol ammonia red and the like, and the color of the color paste is determined according to the requirement of a user.
Example 2
The heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 20 parts of deionized water, 35 parts of polytetrafluoroethylene, 25 parts of polypropylene, 5 parts of molybdenum disulfide, 1 part of fluorocarbon modified polypropylene, 1 part of polyether modified polysiloxane, 0.2 part of polyamide wax and 20 parts of rutile type titanium dioxide.
The preparation method of the heavy-duty anticorrosive fluorocarbon coating in the embodiment comprises the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 polyether modified polysiloxane, rutile titanium dioxide, polyamide wax and fluorocarbon modified polypropylene into a dispersion cylinder, dispersing and premixing under the stirring of low speed 250 r/min, and stirring for 20min to form the raw color paste.
2) Premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 polyether modified polysiloxane are added into a stirring device, stirred and blended at a low speed of 200 revolutions per minute, and stirred for 25min to form basic paint slurry.
3) And (3) high-speed dispersion, namely putting the blended base paint paste and the original color paste into a high-speed dispersion machine for high-speed mixing dispersion at 1200 rpm, wherein the dispersion time is 40min, and obtaining a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine.
4) And (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
In addition, if the paint needs to be toned, before filtering, the semi-finished product of the fluororesin paint is input into a paint mixing tank, and under the stirring working condition, a proper amount of color paste is added according to the requirement, so that the paint paste reaches the designed color, wherein the color paste is water-based color paste of iron oxide series and phthalocyanine series pigments, water-based color paste of carbon black and ultramarine toluol ammonia red and the like, and the color of the color paste is determined according to the requirement of a user.
Example 3
The heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 18 parts of deionized water, 38 parts of polytetrafluoroethylene, 20 parts of polypropylene, 10 parts of molybdenum disulfide, 2 parts of fluorocarbon modified polypropylene, 2 parts of polyether modified polysiloxane, 1 part of polyamide wax and 15 parts of rutile titanium dioxide.
The preparation method of the heavy-duty anticorrosive fluorocarbon coating in the embodiment comprises the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 polyether modified polysiloxane, rutile titanium dioxide, polyamide wax and fluorocarbon modified polypropylene into a dispersion cylinder, dispersing and premixing under the stirring of 200 revolutions per minute at low speed, and stirring for 30min to form the original color paste.
2) Premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 polyether modified polysiloxane are added into a stirring device, stirred and blended at a low speed of 200 revolutions per minute, and stirred for 30min to form basic paint slurry.
3) And (3) high-speed dispersion, namely putting the blended base paint paste and the original color paste into a high-speed dispersion machine for high-speed mixing dispersion at 1500 rpm for 30min to obtain a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine.
4) And (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
In addition, if the paint needs to be toned, before filtering, the semi-finished product of the fluororesin paint is input into a paint mixing tank, and under the stirring working condition, a proper amount of color paste is added according to the requirement, so that the paint paste reaches the designed color, wherein the color paste is water-based color paste of iron oxide series and phthalocyanine series pigments, water-based color paste of carbon black and ultramarine toluol ammonia red and the like, and the color of the color paste is determined according to the requirement of a user.
Example 4
The heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 25 parts of deionized water, 50 parts of polytetrafluoroethylene, 22 parts of polypropylene, 8 parts of molybdenum disulfide, 5 parts of fluorocarbon modified polypropylene, 1 part of polyether modified polysiloxane, 0.5 part of polyamide wax and 25 parts of rutile titanium dioxide.
The preparation method of the heavy-duty anticorrosive fluorocarbon coating in the embodiment comprises the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 polyether modified polysiloxane, rutile titanium dioxide, polyamide wax and fluorocarbon modified polypropylene into a dispersion cylinder, dispersing and premixing under the stirring of 300 r/min at a low speed, and stirring for 20min to form the original color paste.
2) Premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 polyether modified polysiloxane are added into a stirring device, stirred and blended at a low speed of 300 revolutions per minute, and stirred for 20 minutes to form basic paint slurry.
3) High-speed dispersion: and (3) placing the blended basic paint paste and the original color paste into a high-speed dispersion machine for high-speed mixing and dispersion at 1200 r/min for 40min, and obtaining a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine.
4) And (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
In addition, if the paint needs to be toned, before filtering, the semi-finished product of the fluororesin paint is input into a paint mixing tank, and under the stirring working condition, a proper amount of color paste is added according to the requirement, so that the paint paste reaches the designed color, wherein the color paste is water-based color paste of iron oxide series and phthalocyanine series pigments, water-based color paste of carbon black and ultramarine toluol ammonia red and the like, and the color of the color paste is determined according to the requirement of a user.
Example 5
The heavy-duty anticorrosive fluorocarbon coating comprises the following raw materials in parts by mass: 20 parts of deionized water, 45 parts of polytetrafluoroethylene, 22 parts of polypropylene, 8 parts of molybdenum disulfide, 4 parts of fluorocarbon modified polypropylene, 1 part of polyether modified polysiloxane, 0.5 part of polyamide wax and 20 parts of rutile titanium dioxide.
The preparation method of the heavy duty anticorrosive fluorocarbon coating in this example is the same as that in example 4.
The heavy duty fluorocarbon coatings prepared in examples 1-5 were sprayed on steel plates using the same process to form coatings, and performance tests were performed, with the following criteria: the adhesion is detected according to GB/T9286-1998 test for marking the paint film of the colored paint and the varnish; the wear resistance is detected according to GB/T1768-2006 method for measuring the wear resistance of paint films; the chemical resistance is according to GB/T23987; the salt water resistance is detected according to GB9274-1988 determination of liquid-resistant medium of colored paint and varnish; the results of the artificial aging resistance of the alloy according to GB/T9755-2001 are shown in Table 1:
table 1 results of performance tests on heavy duty fluorocarbon coatings prepared in examples 1-5
| Example number | Adhesion/grade | Abrasion resistance (500 g/500 r) g | Salt water resistance | Resistance to artificial aging | Chemical resistance |
| 1 | Level 1 | 0.0078 | Without change | 2615 h without foaming | 2800h has no abnormal condition |
| 2 | Level 0 | 0.0051 | Without change | 2660 h, no foaming | 3300h has no abnormal condition |
| 3 | Level 0 | 0.0058 | Without change | 2877 h without foaming | 3500h has no abnormal condition |
| 4 | Level 1 | 0.0064 | Without change | 2704 h without foaming | No abnormal condition after 3000 hours |
| 5 | Level 1 | 0.0067 | Without change | 2580 h, no foaming | 3200h has no abnormal condition |
| Technical index | Grade 2 or below | ≤0.1 | 60 ℃ 3% NaCl solution for 90 days without change | 2500h without foaming | No abnormal condition for 48 hours |
In conclusion, the heavy-duty anticorrosive fluorocarbon coating has the characteristics of good weather resistance, good corrosion resistance, high adhesion and good stability, is suitable for surface treatment of ship structures, marine system pipelines, pipeline accessories, fasteners and the like which are in contact with seawater, and is also suitable for structures, pipelines, pipeline accessories and fasteners of nuclear power engineering.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The heavy-duty anticorrosive fluorocarbon coating is characterized by comprising the following raw materials in parts by mass: 10-25 parts of deionized water, 35-50 parts of polytetrafluoroethylene, 15-25 parts of polypropylene, 5-10 parts of molybdenum disulfide, 1-5 parts of a flatting agent, 0.5-2 parts of a dispersing agent, 0.2-1 part of an anti-settling agent and 15-25 parts of a pigment.
2. The heavy duty fluorocarbon coating of claim, wherein the leveling agent is fluorocarbon modified polypropylene.
3. The heavy duty fluorocarbon coating of claim, wherein the dispersant is polyether modified polysiloxane.
4. The heavy duty fluorocarbon coating of claim, wherein the anti-settling agent is a polyamide wax.
5. The heavy duty fluorocarbon coating of claim, wherein the pigment is rutile type titanium dioxide with a particle size of 1000-1500 mesh.
6. A method for preparing the heavy duty fluorocarbon coating of any one of claims 1 to 5, characterized by the following steps:
1) pre-mixing raw color paste: accurately weighing the materials according to the formula, putting 1/2 deionized water, 1/2 dispersing agent, pigment, anti-settling agent and flatting agent into a dispersion cylinder, and dispersing and premixing under the stirring of 200 and 300 revolutions per minute at a low speed to form original color paste;
2) premixing basic paint slurry: 1/2 deionized water, polytetrafluoroethylene, polypropylene, molybdenum disulfide and 1/2 dispersing agent are added into stirring equipment, and stirring and blending are carried out at a low speed of 200 and 300 revolutions per minute to form basic paint slurry;
3) high-speed dispersion: placing the blended basic paint paste and the original color paste in a high-speed dispersion machine for high-speed mixing dispersion at 1000-1500 rpm, and obtaining a fluororesin coating semi-finished product with stable dispersion state under the high-shear dispersion action of the high-speed dispersion machine;
4) and (3) filtering: and filtering impurities and pigment particle groups in the coating by adopting bag type filtering equipment to obtain the heavy-duty anticorrosive fluorocarbon coating product.
7. The method for preparing heavy-duty anticorrosive fluorocarbon coating according to claim 6, characterized in that, before filtering in step 4), it further comprises a paint mixing step: and (3) inputting the semi-finished product of the fluororesin coating into a paint mixing tank, and adding a proper amount of color paste according to requirements under the stirring working condition to enable the paint paste to reach the designed color.
8. The method for preparing a heavy duty fluorocarbon coating of claim 7 wherein the color paste is an aqueous color paste of iron oxide based, phthalocyanine based, carbon black or ultramarine toluidine red pigments.
9. The method for preparing heavy-duty anticorrosive fluorocarbon coating according to claim 6, characterized in that the stirring time in step 1) and step 2) is 20-30 min.
10. The method for preparing heavy-duty anticorrosive fluorocarbon coating according to claim 6, wherein the dispersion time in step 3) is 30-60 min.
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2020
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|---|---|---|---|---|
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| CN101831221A (en) * | 2009-09-30 | 2010-09-15 | 杭州之江有机硅化工有限公司 | Aqueous fluorocarbon coating and preparation process thereof |
| CN101717600A (en) * | 2009-12-23 | 2010-06-02 | 山西北辰涂料有限公司 | Single-component aqueous fluorocarbon paint and preparation method thereof |
| CN103992699A (en) * | 2014-05-19 | 2014-08-20 | 安徽嘉木橡塑工业有限公司 | White fluorocarbon coating |
| CN104356870A (en) * | 2014-11-21 | 2015-02-18 | 山东雷帕得汽车技术股份有限公司 | Abrasion-resistant coating for automobile spring steel plate and preparation method of abrasion-resistant coating |
| CN109096811A (en) * | 2018-07-24 | 2018-12-28 | 宁波蒙曼生物科技有限公司 | Wear-resisting scratch-resistant long-life non-viscous paint of one kind and preparation method and application |
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Application publication date: 20201215 |