CN109517467B - Anticorrosive paint for chemical reaction kettle and preparation method thereof - Google Patents
Anticorrosive paint for chemical reaction kettle 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/63—Additives non-macromolecular organic
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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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- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
Abstract
The invention belongs to the technical field of anticorrosive coatings, in particular to an anticorrosive coating for a chemical reaction kettle and a preparation method thereof, which solve the problems that the anticorrosive coating in the prior art is harmful to the environment and human body, has poor self environmental resistance, is not high-temperature resistant and has short service life under the high-temperature condition, and the anticorrosive coating for the chemical reaction kettle comprises the following raw materials: the coating comprises water-based acrylic resin, polyurea resin, epoxy resin, aluminum dihydrogen phosphate, didecyl dimethyl ammonium chloride, fluorocarbon emulsion, ammonium polyphosphate, a corrosion inhibitor, a titanate coupling agent, an antioxidant and a flatting agent. The anticorrosive coating prepared by the invention is environment-friendly, nontoxic, free of pungent smell, excellent in high temperature resistance, corrosion resistance, wear resistance, aging resistance and the like, long in service life, excellent in comprehensive performance and wide in application prospect, and the flame retardant grade reaches UL-94V-0 grade.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, and particularly relates to an anticorrosive coating for a chemical reaction kettle and a preparation method thereof.
Background
The chemical reaction kettle is broadly understood to be a container for physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized through the structural design and parameter configuration of the container. The reaction kettle is widely applied to pressure vessels for petroleum, chemical engineering, rubber, pesticides, dyes, medicines and foods, and is used for completing technological processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like, such as a reactor, a reaction kettle, a decomposition kettle, a polymerization kettle and the like; the material is generally carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloy and other composite materials. In the chemical production process of the chemical reaction kettle, the chemical reaction kettle inevitably contacts corrosive materials such as acidic substances, alkaline substances, organic solvents and the like, so that the corrosive damage is caused to the chemical reaction kettle, the service life of the reaction kettle is influenced, and the result of chemical reaction is influenced. Therefore, the corrosion protection of chemical reaction kettles becomes important. The anticorrosive coating can be applied in a relatively harsh corrosive environment, can play a role in corrosion prevention on metals and the like, and can protect the service life of the metals.
In the prior art, common anticorrosive coatings contain a large amount of Volatile Organic Compounds (VOC) and have harmful effects on the environment and human bodies, and the anticorrosive coatings have poor environment resistance, are not high-temperature resistant, have short service life under high-temperature conditions and are easy to age and lose efficacy after long-time use. Based on the statement, the invention provides an anticorrosive paint for a chemical reaction kettle and a preparation method thereof.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, an anticorrosive coating contains a large amount of volatile organic compounds, has harmful effects on the environment and human bodies, has poor environment resistance and no high temperature resistance, has short service life under a high-temperature condition and is easy to age and lose efficacy after being used for a long time, and provides the anticorrosive coating for the chemical reaction kettle and the preparation method thereof.
An anticorrosive paint for a chemical reaction kettle comprises the following raw materials in parts by weight: 40-60 parts of water-based acrylic resin, 40-60 parts of polyurea resin, 20-30 parts of epoxy resin, 5-12 parts of aluminum dihydrogen phosphate, 2-5 parts of didecyl dimethyl ammonium chloride, 10-18 parts of fluorocarbon emulsion, 3-6 parts of ammonium polyphosphate, 8-12 parts of corrosion inhibitor, 1-3 parts of titanate coupling agent, 1-3 parts of antioxidant and 1-3 parts of flatting agent;
the corrosion inhibitor is prepared by the following method:
s1, adding 5-10 parts by weight of ammonium acetate, 5-10 parts by weight of copper acetate and 1-2 parts by weight of disodium stannous citrate into a reaction kettle, adding 30-50 parts by weight of deionized water, uniformly mixing, heating to 135-155 ℃, keeping the temperature for 1-2 hours, cooling to 80-90 ℃, adding 2-5 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid to adjust the pH value to 5.2-5.8, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 1-3 parts by weight of castor oil phosphate, 1-3 parts by weight of ethyl hexyl methoxycinnamate and 15-25 parts by weight of polyether polyol, heating to 100-120 ℃, adding the mixture I, stirring and mixing at the rotating speed of 600-800 r/min for 10-20 min to obtain the corrosion inhibitor.
Preferably, the anticorrosive paint for the chemical reaction kettle comprises the following raw materials in parts by weight: 45-55 parts of water-based acrylic resin, 45-55 parts of polyurea resin, 22-28 parts of epoxy resin, 6-10 parts of aluminum dihydrogen phosphate, 3-4 parts of didecyl dimethyl ammonium chloride, 12-16 parts of fluorocarbon emulsion, 4-5 parts of ammonium polyphosphate, 9-11 parts of corrosion inhibitor, 1.5-2.5 parts of titanate coupling agent, 1.5-2.5 parts of antioxidant and 1.5-2.5 parts of flatting agent.
Preferably, the anticorrosive paint for the chemical reaction kettle comprises the following raw materials in parts by weight: 50 parts of water-based acrylic resin, 50 parts of polyurea resin, 25 parts of epoxy resin, 8 parts of aluminum dihydrogen phosphate, 3.5 parts of didecyl dimethyl ammonium chloride, 14 parts of fluorocarbon emulsion, 4.5 parts of ammonium polyphosphate, 10 parts of corrosion inhibitor, 2 parts of titanate coupling agent, 2 parts of antioxidant and 2 parts of flatting agent.
Preferably, the antioxidant is compounded by p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester according to the mass ratio of 3:3: 1.
The invention also provides a preparation method of the anticorrosive paint for the chemical reaction kettle, which comprises the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the fluorocarbon emulsion and the corrosion inhibitor into a grinder, fully grinding for 20-40 min, adding didecyl dimethyl ammonium chloride, heating to 70-90 ℃, and stirring for 5-10 min to obtain a mixture A;
s3, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing for 10-20 min at the rotating speed of 1000-2000 r/min and the temperature of 130-150 ℃, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture B;
and S4, adding the mixture A into the mixture B, stirring and adding ammonium polyphosphate, an antioxidant and a flatting agent at the rotating speed of 1000-2000 r/min at 110-130 ℃, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
The anticorrosive coating for the chemical reaction kettle provided by the invention has the following beneficial effects:
1. grinding the fluorocarbon emulsion and the corrosion inhibitor together, adding didecyl dimethyl ammonium chloride, stirring and dispersing to obtain a mixture A; mixing the water-based acrylic resin, the polyurea resin and the epoxy resin at high temperature, adding aluminum dihydrogen phosphate, and further mixing to obtain a mixture B; finally, after the mixture A and the mixture B are mixed, the ammonium polyphosphate, the antioxidant and the flatting agent are added and finally mixed to obtain the anticorrosive coating; the anticorrosive coating prepared by the invention is environment-friendly, nontoxic, free of pungent smell, excellent in high temperature resistance, corrosion resistance, wear resistance, aging resistance and the like, long in service life, excellent in comprehensive performance and wide in application prospect, and the flame retardant grade reaches UL-94V-0 grade.
2. The method comprises the steps of mixing ammonium acetate, copper acetate, disodium stannous citrate and deionized water, adding hydroxyethylidene diphosphonic acid, and processing under an acidic condition to obtain a mixture I; then, primarily mixing castor oil phosphate, ethyl hexyl methoxycinnamate and polyether polyol, and mixing with the mixture I to prepare a corrosion inhibitor; the corrosion inhibitor prepared by the invention has high permeability, cohesiveness, dispersing and mixing capability and surface binding capability, can remarkably increase the cross-linking density of a coating film, and has good acid-base corrosion resistance as raw material molecules are overlapped to effectively block moisture and corrosive media; research experiments prove that the density and hardness of the anticorrosive coating can be remarkably improved and the heat resistance and corrosion resistance of the anticorrosive coating can be improved by adding the prepared corrosion inhibitor into the anticorrosive coating.
3. The formula of the invention is scientific, the proportion is strict, the obtained anticorrosive paint can be applied to a high-temperature and relatively harsh corrosive environment for a long time, a chemical reaction kettle can be effectively protected from being damaged by corrosive materials such as acidic substances, alkaline substances, organic solvents and the like, and the problems that the anticorrosive paint contains a large amount of volatile organic matters, has harmful effects on the environment and human bodies, has poor self environmental resistance and no high temperature resistance, has short service life under the high-temperature condition and is easy to age and lose efficacy after being used for a long time in the prior art are solved.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides an anticorrosive paint for a chemical reaction kettle, which comprises the following raw materials in parts by weight: 40 parts of water-based acrylic resin, 40 parts of polyurea resin, 20 parts of epoxy resin, 5 parts of aluminum dihydrogen phosphate, 2 parts of didecyl dimethyl ammonium chloride, 10 parts of fluorocarbon emulsion, 3 parts of ammonium polyphosphate, 8 parts of corrosion inhibitor, 1 part of titanate coupling agent, 1 part of antioxidant and 1 part of flatting agent;
the antioxidant is prepared by compounding p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester according to the mass ratio of 3:3: 1;
the corrosion inhibitor is prepared by the following method:
s1, adding 5 parts by weight of ammonium acetate, 5 parts by weight of copper acetate and 1 part by weight of disodium stannous citrate into a reaction kettle, adding 30 parts by weight of deionized water, uniformly mixing, heating to 135 ℃, keeping the temperature for 1h, cooling to 80 ℃, adding 2 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid, adjusting the pH value to 5.2, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 1 part by weight of castor oil phosphate ester salt, 1 part by weight of ethyl hexyl methoxycinnamate and 15 parts by weight of polyether polyol, heating to 100 ℃, adding the mixture I, and stirring and mixing at the rotating speed of 600r/min for 10min to obtain the corrosion inhibitor.
A preparation method of an anticorrosive paint for a chemical reaction kettle comprises the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the fluorocarbon emulsion and the corrosion inhibitor into a grinder, fully grinding for 20min, adding didecyl dimethyl ammonium chloride, heating to 70 ℃, and stirring for 5min to obtain a mixture A;
s3, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing for 10min at the rotating speed of 1000r/min and the temperature of 130 ℃, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture B;
s4, adding the mixture A into the mixture B, adding ammonium polyphosphate, an antioxidant and a leveling agent at the rotation speed of 1000r/min and the temperature of 110 ℃ while stirring, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
Example two
The invention provides an anticorrosive paint for a chemical reaction kettle, which comprises the following raw materials in parts by weight: 50 parts of water-based acrylic resin, 50 parts of polyurea resin, 25 parts of epoxy resin, 8 parts of aluminum dihydrogen phosphate, 3.5 parts of didecyl dimethyl ammonium chloride, 14 parts of fluorocarbon emulsion, 4.5 parts of ammonium polyphosphate, 10 parts of corrosion inhibitor, 2 parts of titanate coupling agent, 2 parts of antioxidant and 2 parts of flatting agent;
the antioxidant is prepared by compounding p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester according to the mass ratio of 3:3: 1;
the corrosion inhibitor is prepared by the following method:
s1, adding 8 parts by weight of ammonium acetate, 8 parts by weight of copper acetate and 1.5 parts by weight of disodium stannous citrate into a reaction kettle, adding 40 parts by weight of deionized water, uniformly mixing, heating to 135-155 ℃, keeping the temperature for 1-2 hours, cooling to 85 ℃, adding 3.5 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid to adjust the pH value to 5.5, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 2 parts by weight of castor oil phosphate ester salt, 2 parts by weight of ethyl hexyl methoxycinnamate and 20 parts by weight of polyether polyol, heating to 110 ℃, adding the mixture I, and stirring and mixing at the rotating speed of 700r/min for 15min to obtain the corrosion inhibitor.
A preparation method of an anticorrosive paint for a chemical reaction kettle comprises the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the fluorocarbon emulsion and the corrosion inhibitor into a grinder, fully grinding for 30min, adding didecyl dimethyl ammonium chloride, heating to 80 ℃, and stirring for 8min to obtain a mixture A;
s3, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing at the rotating speed of 1500r/min and the temperature of 140 ℃ for 15min, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture B;
and S4, adding the mixture A into the mixture B, adding ammonium polyphosphate, an antioxidant and a leveling agent at the rotation speed of 1500r/min and at the temperature of 120 ℃ while stirring, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
EXAMPLE III
The invention provides an anticorrosive paint for a chemical reaction kettle, which comprises the following raw materials in parts by weight: 60 parts of water-based acrylic resin, 60 parts of polyurea resin, 30 parts of epoxy resin, 12 parts of aluminum dihydrogen phosphate, 5 parts of didecyl dimethyl ammonium chloride, 18 parts of fluorocarbon emulsion, 6 parts of ammonium polyphosphate, 12 parts of corrosion inhibitor, 3 parts of titanate coupling agent, 3 parts of antioxidant and 3 parts of flatting agent;
the antioxidant is prepared by compounding p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester according to the mass ratio of 3:3: 1;
the corrosion inhibitor is prepared by the following method:
s1, adding 10 parts by weight of ammonium acetate, 10 parts by weight of copper acetate and 2 parts by weight of disodium stannous citrate into a reaction kettle, adding 50 parts by weight of deionized water, uniformly mixing, heating to 155 ℃, keeping the temperature for 2 hours, cooling to 90 ℃, adding 5 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid, adjusting the pH value to 5.8, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 3 parts by weight of castor oil phosphate ester salt, 3 parts by weight of ethyl hexyl methoxycinnamate and 25 parts by weight of polyether polyol, heating to 120 ℃, adding the mixture I, and stirring and mixing at the rotating speed of 800r/min for 20min to obtain the corrosion inhibitor.
A preparation method of an anticorrosive paint for a chemical reaction kettle comprises the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the fluorocarbon emulsion and the corrosion inhibitor into a grinder, fully grinding for 40min, adding didecyl dimethyl ammonium chloride, heating to 90 ℃, and stirring for 10min to obtain a mixture A;
s3, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing at the rotating speed of 2000r/min and the temperature of 150 ℃ for 20min, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture B;
and S4, adding the mixture A into the mixture B, adding ammonium polyphosphate, an antioxidant and a leveling agent while stirring at the rotating speed of 2000r/min and the temperature of 130 ℃, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
Comparative example one: the corrosion inhibitor in example one was replaced with zinc dialkyldithiophosphate, and the rest was the same as in example one.
Comparative example No. two
The invention provides an anticorrosive paint for a chemical reaction kettle, which comprises the following raw materials in parts by weight: 40 parts of water-based acrylic resin, 40 parts of polyurea resin, 20 parts of epoxy resin, 5 parts of aluminum dihydrogen phosphate, 2 parts of didecyl dimethyl ammonium chloride, 10 parts of fluorocarbon emulsion, 3 parts of ammonium polyphosphate, 8 parts of corrosion inhibitor, 1 part of titanate coupling agent, 1 part of antioxidant and 1 part of flatting agent;
the antioxidant is prepared by compounding p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester according to the mass ratio of 3:3: 1;
the corrosion inhibitor is prepared by the following method:
s1, adding 5 parts by weight of ammonium acetate, 5 parts by weight of copper acetate and 1 part by weight of disodium stannous citrate into a reaction kettle, adding 30 parts by weight of deionized water, uniformly mixing, heating to 135 ℃, keeping the temperature for 1h, cooling to 80 ℃, adding 2 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid, adjusting the pH value to 5.2, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 1 part by weight of castor oil phosphate ester salt, 1 part by weight of ethyl hexyl methoxycinnamate and 15 parts by weight of polyether polyol, heating to 100 ℃, adding the mixture I, and stirring and mixing at the rotating speed of 600r/min for 10min to obtain the corrosion inhibitor.
A preparation method of an anticorrosive paint for a chemical reaction kettle comprises the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing for 10min at the rotating speed of 1000r/min and the temperature of 130 ℃, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture A;
s3, adding the fluorocarbon emulsion, the corrosion inhibitor and the didecyl dimethyl ammonium chloride into the mixture A together, adding the ammonium polyphosphate, the antioxidant and the leveling agent at the rotation speed of 1000r/min and the temperature of 110 ℃ while stirring, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
The performances of the anticorrosive coatings prepared in the examples one to three and the comparative examples one and two were respectively tested, and the following results were obtained:
table:
in the table: and (3) analyzing heat resistance: coating an anticorrosive paint on a test piece subjected to decontamination treatment, baking the test piece at 280 ℃ for 10min, putting the test piece into a constant-temperature box type electric furnace checked by a potential difference meter, raising the temperature by 5 ℃/min, starting timing along with the temperature of the furnace to the required temperature of an experiment, taking out the test piece after the test piece is subjected to continuous high temperature, cooling the test piece to room temperature (25 ℃), and observing the surface condition of the coating by using a magnifying glass, wherein the coating has good heat resistance if no cracking or shedding phenomenon exists.
And (3) testing the adhesive force: the test was carried out according to GB/T9286-1998.
And (3) hardness testing: the test was carried out according to GB/T6739-1996.
Acid resistance test of the paint film: coating an anticorrosive paint on the decontaminated test piece, baking the test piece at 280 ℃ for 10min, putting the test piece into a boiled 3% acetic acid aqueous solution, taking out the test piece every half hour, and observing the surface condition of the coating, wherein the phenomenon of foaming and shedding is avoided, namely the coating is proved to be good in acid resistance.
As can be seen from Table 1: the adhesion, high temperature resistance, corrosion resistance and hardness of the anticorrosive coatings prepared in the first to third embodiments of the invention are far higher than those of the anticorrosive coatings prepared in the first and second embodiments of the invention, and the comprehensive performance is good.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The anticorrosive paint for the chemical reaction kettle is characterized by comprising the following raw materials in parts by weight: 40-60 parts of water-based acrylic resin, 40-60 parts of polyurea resin, 20-30 parts of epoxy resin, 5-12 parts of aluminum dihydrogen phosphate, 2-5 parts of didecyl dimethyl ammonium chloride, 10-18 parts of fluorocarbon emulsion, 3-6 parts of ammonium polyphosphate, 8-12 parts of corrosion inhibitor, 1-3 parts of titanate coupling agent, 1-3 parts of antioxidant and 1-3 parts of flatting agent;
the corrosion inhibitor is prepared by the following method:
s1, adding 5-10 parts by weight of ammonium acetate, 5-10 parts by weight of copper acetate and 1-2 parts by weight of disodium stannous citrate into a reaction kettle, adding 30-50 parts by weight of deionized water, uniformly mixing, heating to 135-155 ℃, keeping the temperature for 1-2 hours, cooling to 80-90 ℃, adding 2-5 parts by weight of hydroxyethylidene diphosphonic acid, adding acetic acid to adjust the pH value to 5.2-5.8, and continuously stirring and uniformly mixing to obtain a mixture I;
s2, mixing 1-3 parts by weight of castor oil phosphate, 1-3 parts by weight of ethyl hexyl methoxycinnamate and 15-25 parts by weight of polyether polyol, heating to 100-120 ℃, adding the mixture I, stirring and mixing at the rotating speed of 600-800 r/min for 10-20 min to obtain the corrosion inhibitor.
2. The anticorrosive paint for the chemical reaction kettle according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 45-55 parts of water-based acrylic resin, 45-55 parts of polyurea resin, 22-28 parts of epoxy resin, 6-10 parts of aluminum dihydrogen phosphate, 3-4 parts of didecyl dimethyl ammonium chloride, 12-16 parts of fluorocarbon emulsion, 4-5 parts of ammonium polyphosphate, 9-11 parts of corrosion inhibitor, 1.5-2.5 parts of titanate coupling agent, 1.5-2.5 parts of antioxidant and 1.5-2.5 parts of flatting agent.
3. The anticorrosive paint for the chemical reaction kettle according to claim 1 or 2, which is characterized by comprising the following raw materials in parts by weight: 50 parts of water-based acrylic resin, 50 parts of polyurea resin, 25 parts of epoxy resin, 8 parts of aluminum dihydrogen phosphate, 3.5 parts of didecyl dimethyl ammonium chloride, 14 parts of fluorocarbon emulsion, 4.5 parts of ammonium polyphosphate, 10 parts of corrosion inhibitor, 2 parts of titanate coupling agent, 2 parts of antioxidant and 2 parts of flatting agent.
4. The anticorrosive paint for the chemical reaction kettle according to claim 1 or 2, wherein the antioxidant is compounded by p-phenylenediamine, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and trioctyl ester in a mass ratio of 3:3: 1.
5. The preparation method of the anticorrosive paint for the chemical reaction kettle according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, weighing the water-based acrylic resin, the polyurea resin, the epoxy resin, the aluminum dihydrogen phosphate, the didecyl dimethyl ammonium chloride, the fluorocarbon emulsion, the ammonium polyphosphate, the corrosion inhibitor, the titanate coupling agent, the antioxidant and the flatting agent according to the weight parts of the specific weight;
s2, adding the fluorocarbon emulsion and the corrosion inhibitor into a grinder, fully grinding for 20-40 min, adding didecyl dimethyl ammonium chloride, heating to 70-90 ℃, and stirring for 5-10 min to obtain a mixture A;
s3, adding the water-based acrylic resin, the polyurea resin and the epoxy resin into a mixer together, stirring and mixing for 10-20 min at the rotating speed of 1000-2000 r/min and the temperature of 130-150 ℃, then adding aluminum dihydrogen phosphate while stirring, and uniformly mixing to obtain a mixture B;
and S4, adding the mixture A into the mixture B, stirring and adding ammonium polyphosphate, an antioxidant and a flatting agent at the rotating speed of 1000-2000 r/min at 110-130 ℃, and stirring until the mixture is uniformly dispersed to obtain the anticorrosive paint.
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| US20110100630A1 (en) * | 2009-11-02 | 2011-05-05 | Baker Hughes Incorporated | Method of Mitigating Corrosion Rate of Oilfield Tubular Goods |
| JP6619920B2 (en) * | 2015-12-16 | 2019-12-11 | 株式会社Uacj | Pre-coated aluminum material |
| CN105484322A (en) * | 2015-12-23 | 2016-04-13 | 武汉广益交通科技股份有限公司 | Anti-freezing preservative for cold region tunnel fire protection and use method thereof |
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| CN105838186B (en) * | 2016-03-25 | 2018-05-11 | 东北石油大学 | A kind of novel anticorrosion coating and preparation method thereof |
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