CN111423790A - Water-based epoxy ester dip-coating paint and preparation method thereof - Google Patents
Water-based epoxy ester dip-coating paint and preparation method thereof Download PDFInfo
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- CN111423790A CN111423790A CN202010307022.8A CN202010307022A CN111423790A CN 111423790 A CN111423790 A CN 111423790A CN 202010307022 A CN202010307022 A CN 202010307022A CN 111423790 A CN111423790 A CN 111423790A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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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
- C08K2003/328—Phosphates of heavy metals
Abstract
The invention relates to a water-based epoxy ester dip-coating paint and a preparation method thereof, belonging to the technical field of water-based dip-coating paints. Comprises the following components in parts by weight: 35-59 parts of epoxy ester emulsion, 10-25 parts of filler, 0.1-5 parts of pH regulator, 1-10 parts of antirust pigment, 1-5 parts of coloring pigment, 0.1-1 part of dispersant, 0.1-1 part of defoamer, 0.1-1 part of wetting agent, 1-10 parts of emulsion stabilizer, 1-5 parts of film forming assistant, 0.1-1 part of flash rust inhibitor and 10-30 parts of distilled water. The water-based epoxy ester dip-coating paint has excellent corrosion resistance, quick drying property and good mechanical property. Tests prove that the impact strength of the water-based epoxy ester dip-coating paint provided by the invention is more than 50 kg-cm, the salt spray resistance experiment of 70 mu m on a carbon steel substrate can reach more than 450h, and the water-based epoxy ester dip-coating paint can meet the relatively severe use environment when being used for iron castings, and is suitable for a quick-drying flow production line.
Description
Technical Field
The invention belongs to the technical field of water-based dip-coating paint, and particularly relates to water-based epoxy ester dip-coating paint and a preparation method thereof.
Background
Dip coating is the process of immersing the object to be coated in a tank containing the coating, taking it out of the tank after a short period of time, and returning the excess coating liquid back to the tank. The dip coating has the characteristics of high production efficiency, simple operation and less coating loss, and is suitable for small hardware parts, steel pipe frames, sheets, equipment with complex structures or electrical insulator materials and the like. The dip coating method is mainly used for coating baking type coatings, but is also used for coating self-drying type coatings, and is not generally suitable for quick drying coatings (such as nitrolacquer) with a volatile type. The dip coating used in the dip coating method should have the properties of no skinning, no precipitation of pigment, and no gelation.
In recent years, with the increasing environmental pollution, the development and application of green coatings by coating enterprises and research institutes are promoted. The traditional dip coating has large solvent volatilization amount, is easy to pollute the environment, has large coating loss rate, and is generally not suitable for the coating with quick volatility and quick drying. Therefore, the development of a fast-drying epoxy resin dip-coating paint with excellent protective performance is a problem to be solved urgently.
Disclosure of Invention
Aiming at the problems of low self-drying speed and poor protective performance of epoxy ester in the prior art, the invention provides a water-based epoxy ester dip-coating paint and a preparation method thereof, so as to solve the problems. The dip coating disclosed by the invention contains the epoxy ester emulsion which has the characteristics of strong acidity, good low-temperature film-forming property, low viscosity and the like, so that the epoxy ester emulsion has excellent adhesive force, mechanical property and chemical property when being used for coating.
The technical scheme of the invention is as follows: the water-based epoxy ester dip-coating paint comprises the following components in parts by weight: 35-59 parts of epoxy ester emulsion, 10-25 parts of filler, 0.1-5 parts of pH regulator, 1-10 parts of antirust pigment, 1-5 parts of coloring pigment, 0.1-1 part of dispersant, 0.1-1 part of defoamer, 0.1-1 part of wetting agent, 1-10 parts of emulsion stabilizer, 1-5 parts of film forming assistant, 0.1-1 part of flash rust inhibitor and 10-30 parts of distilled water.
Preferably, the composition comprises the following components in parts by weight: 45 parts of epoxy ester emulsion, 20 parts of filler, 0.3 part of pH regulator, 6 parts of antirust pigment, 2 parts of coloring pigment, 0.3 part of dispersant, 0.6 part of defoaming agent, 0.3 part of wetting agent, 6 parts of emulsion stabilizer, 5 parts of film-forming assistant, 0.5 part of flash rust inhibitor and 30 parts of distilled water.
Preferably, the epoxy ester emulsion is a water-based epoxy ester emulsion, and the pH value is 1.0-4.0. The emulsion is acrylic acid, vinyl chloride and vinylidene chloride ternary copolymer resin, has a stable molecular structure, has good barrier property on carbon dioxide, oxygen and water vapor, has good adhesive force on various substrates, and has good tolerance on chemical media such as acid and a plurality of solvents; in addition, the resin can be used to prepare coating materials which have a good balance between hardness and softness, thus giving very good toughness.
Preferably, the filler is one or a combination of more of talcum powder, mica powder, kaolin, barite powder and the like.
Preferably, the pH regulator is one of 25% ammonia water and triethylamine.
Preferably, the anti-rust pigment is one or a combination of two of zinc phosphate and aluminum tripolyphosphate. The specific model is Xinsheng modified aluminum tripolyphosphate.
Preferably, the coloring pigment is one or a combination of two of carbon black and titanium dioxide.
Preferably, the dispersant is a sodium polyacrylate solution, specifically TEGO Dispers 715W. The dispersant has strong viscosity reducing effect on inorganic pigment and filler.
Preferably, the defoaming agent is polyether siloxane copolymer, nonionic surfactant, specifically TEGO901W or BASF FOAmaster MO2134 or a combination of two. The defoaming agent has the advantages of small surface tension, good thermal stability, good chemical stability and excellent performance, and is suitable for an emulsion system.
Preferably, the wetting agent is a water-based system nonionic multifunctional surfactant, specifically Air products Surfynol 104E. The advantages are that the flow and the leveling property are improved, the surface tension is effectively reduced, the good wettability of the base material is ensured, and the microbubble eliminating effect is achieved.
Preferably, the emulsion stabilizer is TR-WA, Dacron Toucheng. Such emulsion stabilizers have the advantage of facilitating the stability of the emulsion.
Preferably, the flash rust inhibitor is 15% sodium nitrite solution.
Preferably, the film-forming assistant is an ether or alcohol ester film-forming substance, and specifically is ethylene glycol butyl ether.
The invention also aims to provide a preparation method of the water-based epoxy ester dip-coating paint, which comprises the following specific steps:
(1) sequentially adding a dispersing agent, a defoaming agent, a wetting agent, an emulsion stabilizer, a filler, an anti-rust pigment, a coloring pigment and distilled water into a reaction tank I, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 40-120 min, controlling the grinding temperature to be below 15 ℃, controlling the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the epoxy ester emulsion into a reaction tank II, and adding a pH regulator to regulate the pH of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 5-30 min, adding the anti-flash rust agent and the film-forming assistant, and stirring for 5-30 min to obtain the water-based epoxy ester dip-coating paint.
The invention has the beneficial effects that:
the water-based epoxy ester dip-coating paint has excellent corrosion resistance, quick drying property and good mechanical property. Tests prove that the impact strength of the water-based epoxy ester dip-coating paint provided by the invention is more than 50 kg-cm, the salt spray resistance experiment of 70 mu m on a carbon steel substrate can reach more than 450h, and the water-based epoxy ester dip-coating paint can meet the relatively severe use environment when being used for iron castings, and is suitable for a quick-drying flow production line.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The water-based epoxy ester dip-coating paint comprises the following components in parts by weight: the coating comprises the following raw materials, by weight, 15% of sodium nitrite solution, 30 parts of distilled water, 10 parts of disyman H20235, 10 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 0.3 part of 25% ammonia water, 2 parts of zinc phosphate, 3 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide, 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of Air Products Surfynol 104E, 5 parts of TR-WA, 5 parts of ethylene glycol butyl ether, 0.5 part of 15% sodium nitrite solution and 30 parts of distilled water.
The preparation method comprises the following specific steps:
(1) adding 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2 part, 0.3 part of Air Products Surfynol 104E, 5 parts of TR-WA, 10 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 2 parts of zinc phosphate, 3 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide and 30 parts of distilled water into a reaction tank I in sequence, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 60min, controlling the grinding temperature to be below 15 ℃ and the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the Disemann H20235 parts into a reaction tank II, and adding 25% ammonia water to adjust the pH value of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 15min, adding 0.5 part of 15% sodium nitrite solution and 5 parts of ethylene glycol monobutyl ether, and stirring for 20min to obtain the water-based epoxy ester dip-coating paint.
Example 2
The water-based epoxy ester dip-coating paint comprises the following components in parts by weight: the coating comprises the following raw materials, by weight, 15 parts of Disemann H20245, 15 parts of talcum powder, 3 parts of mica powder, 2 parts of kaolin, 0.3 part of 25% ammonia water, 2 parts of zinc phosphate, 4 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide, 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of air products Surfynol 104E, 6 parts of TR-WA, 5 parts of a film-forming additive, 0.5 part of 15% sodium nitrite solution and 30 parts of distilled water.
The preparation method comprises the following specific steps:
(1) adding 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of Air Products Surfynol 104E, 6 parts of TR-WA, 15 parts of talcum powder, 3 parts of mica powder, 2 parts of kaolin, 2 parts of zinc phosphate, 4 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide and 30 parts of distilled water into a reaction tank I in sequence, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 60min, controlling the grinding temperature to be below 15 ℃ and the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the Disemann H20245 parts into a reaction tank II, and adding 25% ammonia water to adjust the pH value of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 15min, adding 0.5 part of 15% sodium nitrite solution and 5 parts of ethylene glycol monobutyl ether, and stirring for 20min to obtain the water-based epoxy ester dip-coating paint.
Example 3
The water-based epoxy ester dip-coating paint comprises the following components in parts by weight: the coating comprises the following raw materials, by weight, 15% of sodium nitrite solution, 15% of sodium hydroxide solution, 12% of talc powder, 5% of mica powder, 2% of kaolin, 2% of barite powder, 0.3% of triethylamine, 3% of zinc phosphate, 3% of aluminum tripolyphosphate, 2% of carbon black, 10% of titanium dioxide, 0.3% of TEGO Dispers 715W, 0.4% of TEGO901W, 0.3% of BASF FOAmaster MO 21340.2, 0.3% of Air Products Surfynol 104E, 6% of TR-WA, 5% of ethylene glycol butyl ether, 0.5% of 15% sodium nitrite solution and 30% of distilled water.
The preparation method comprises the following specific steps:
(1) adding 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2 part, 0.3 part of Air Products Surfynol 104E, 6 parts of TR-WA, 12 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 2 parts of zinc phosphate, 3 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide and 30 parts of distilled water into a reaction tank I in sequence, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 60min, controlling the grinding temperature to be below 15 ℃ and the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding dismann H20250 parts to a reaction tank II, and adding triethylamine to adjust the pH value of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 15min, adding 0.5 part of 15% sodium nitrite solution and 5 parts of ethylene glycol monobutyl ether, and stirring for 20min to obtain the water-based epoxy ester dip-coating paint.
Comparative example 1
The water-based epoxy ester dip-coating paint comprises the following components in parts by weight: the coating comprises the following raw materials, by weight, 15% of sodium nitrite solution, 15% of distilled water, 12% of Tesmann H20245, 12% of talcum powder, 5% of mica powder, 2% of kaolin, 2% of barite powder, 0.3% of 25% ammonia water, 3% of aluminum tripolyphosphate, 2% of carbon black, 10% of titanium dioxide, 0.3% of TEGO Dispers 715W, 0.4% of TEGO901W, 0.3% of BASF FOAmasster MO 21340.2, 0.3% of air products Surfynol 104E, 6% of TR-WA, 5% of ethylene glycol monobutyl ether, 0.5% of 15% sodium nitrite solution and 30% of distilled water.
The preparation method comprises the following specific steps:
(1) adding 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of Air Products Surfynol 104E, 6 parts of TR-WA, 12 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 3 parts of aluminum tripolyphosphate, 2 parts of carbon black, 10 parts of titanium dioxide and 30 parts of distilled water into a reaction tank I in sequence, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 60min, controlling the grinding temperature to be below 15 ℃ and the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the Disemann H20245 parts into a reaction tank II, and adding 25% ammonia water to adjust the pH value of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 15min, adding 0.5 part of 15% sodium nitrite solution and 5 parts of ethylene glycol monobutyl ether, and stirring for 20min to obtain the water-based epoxy ester dip-coating paint.
Comparative example 2
The water-based epoxy ester dip-coating paint comprises the following components in parts by weight: the coating comprises the following raw materials, by weight, 15% of sodium nitrite solution, 12 parts of Dismantan H20245, 12 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 0.3 part of triethylamine, 3 parts of zinc phosphate, 2 parts of carbon black, 10 parts of titanium dioxide, 0.3 part of TEGODispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of Air products Surfynol 104E, 6 parts of TR-WA, 5 parts of ethylene glycol monobutyl ether, 0.5 part of 15% sodium nitrite solution and 30 parts of distilled water.
The preparation method comprises the following specific steps:
(1) adding 0.3 part of TEGO Dispers 715W, 0.4 part of TEGO901W, 0.3 part of BASF FOAmaster MO 21340.2, 0.3 part of Air Products Surfynol 104E, 6 parts of TR-WA, 12 parts of talcum powder, 5 parts of mica powder, 2 parts of kaolin, 2 parts of barite powder, 3 parts of zinc phosphate, 2 parts of carbon black, 10 parts of titanium dioxide and 30 parts of distilled water into a reaction tank I in sequence, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 60min, controlling the grinding temperature to be below 15 ℃ and the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the Disemann H20245 parts into a reaction tank II, and adding 25% ammonia water to adjust the pH value of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 15min, adding 0.5 part of 15% sodium nitrite solution and 5 parts of ethylene glycol monobutyl ether, and stirring for 20min to obtain the water-based epoxy ester dip-coating paint.
The coatings prepared in example 1, example 2 and example 3 and comparative example 1 and comparative example 2 were subjected to performance tests, and the test results are shown in the following table 1:
TABLE 1 test results
According to the analysis of the test result, when the waterborne epoxy ester dip-coating paint disclosed by the invention is used for reducing the antirust pigment or the emulsion stabilizer, the impact strength, the neutral salt spray resistance and the acid resistance of the paint are affected; the impact strength of the water-based epoxy ester dip-coating paint provided by the invention is more than 50kg cm, the salt spray resistance experiment of 70 microns on a carbon steel substrate can reach more than 450h, the water-based epoxy ester dip-coating paint can meet the relatively severe use environment when being used for iron castings, is easy to coat with a film thickness, and is suitable for a quick-drying flow production line.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The water-based epoxy ester dip-coating paint is characterized by comprising the following components in parts by weight: 35-59 parts of epoxy ester emulsion, 10-25 parts of filler, 0.1-5 parts of pH regulator, 1-10 parts of antirust pigment, 1-5 parts of coloring pigment, 0.1-1 part of dispersant, 0.1-1 part of defoamer, 0.1-1 part of wetting agent, 1-10 parts of emulsion stabilizer, 1-5 parts of film forming assistant, 0.1-1 part of flash rust inhibitor and 10-30 parts of distilled water.
2. The aqueous epoxy ester dip coating of claim 1, comprising the following components in parts by weight: 45 parts of epoxy ester emulsion, 20 parts of filler, 0.3 part of pH regulator, 6 parts of antirust pigment, 2 parts of coloring pigment, 0.3 part of dispersant, 0.6 part of defoaming agent, 0.3 part of wetting agent, 6 parts of emulsion stabilizer, 5 parts of film-forming assistant, 0.5 part of flash rust inhibitor and 30 parts of distilled water.
3. The aqueous epoxy ester dip coating of claim 1, wherein the epoxy ester emulsion is an aqueous epoxy ester emulsion having a pH of 1.0 to 4.0, and is specifically a teseman H202 emulsion.
4. The aqueous epoxy ester dip-coating paint according to claim 1, wherein the filler is one or a combination of talc, mica powder, kaolin, barite powder, and the like.
5. The aqueous epoxy ester dip coating of claim 1, wherein the pH adjuster is one of 25% ammonia and triethylamine.
6. The aqueous epoxy ester dip coating of claim 1, wherein the rust inhibiting pigment is one or a combination of zinc phosphate, aluminum tripolyphosphate.
7. The aqueous epoxy ester dip coating of claim 1, wherein the color pigment is one or a combination of carbon black and titanium dioxide.
8. The aqueous epoxy ester dip coating of claim 1, wherein the dispersant is a sodium polyacrylate solution, in particular TEGO Dispers 715W.
9. The aqueous epoxy ester dip coating of claim 1, wherein the defoamer is a polyether siloxane copolymer, a non-ionic surfactant, specifically TEGO901W or BASF FOAmaster MO 2134;
further preferably, the wetting agent is a water-based system nonionic multifunctional surfactant, specifically air products Surfynol 104E;
further preferably, the emulsion stabilizer is TR-WA of Dazuansheng;
further preferably, the flash rust inhibitor is 15% sodium nitrite solution;
further preferably, the film-forming assistant is an ether or alcohol ester film-forming substance, and specifically is ethylene glycol butyl ether.
10. The preparation method of the water-based epoxy ester dip-coating paint is characterized by comprising the following specific steps:
(1) sequentially adding a dispersing agent, a defoaming agent, a wetting agent, an emulsion stabilizer, a filler, an anti-rust pigment, a coloring pigment and distilled water into a reaction tank I, and stirring for 5-30 min;
(2) adding zirconium beads, grinding for 40-120 min, controlling the grinding temperature to be below 15 ℃, controlling the fineness to be less than or equal to 25 mu m, and filtering to obtain color paste;
(3) adding the epoxy ester emulsion into a reaction tank II, and adding a pH regulator to regulate the pH of the emulsion to 4-5;
(4) and (3) adding the epoxy ester emulsion with the adjusted pH value into the color paste obtained in the step (2), stirring for 5-30 min, adding the anti-flash rust agent and the film-forming assistant, and stirring for 5-30 min to obtain the water-based epoxy ester dip-coating paint.
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| CN107286798A (en) * | 2017-07-10 | 2017-10-24 | 湖南邦弗特新材料技术有限公司 | A kind of salt spray resistance, ageing-resistant water paint and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114752267A (en) * | 2021-09-22 | 2022-07-15 | 上海君子兰新材料股份有限公司 | Water-based single-component high-fullness roller coating white primer and preparation method and application thereof |
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Application publication date: 20200717 |