CN112457747A - Epoxy drinking water coating and preparation method thereof - Google Patents
Epoxy drinking water coating and preparation method thereof Download PDFInfo
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- CN112457747A CN112457747A CN202011225805.8A CN202011225805A CN112457747A CN 112457747 A CN112457747 A CN 112457747A CN 202011225805 A CN202011225805 A CN 202011225805A CN 112457747 A CN112457747 A CN 112457747A
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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
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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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
- C08K2003/3036—Sulfides of zinc
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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
- C08K2003/3045—Sulfates
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
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- Organic Chemistry (AREA)
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- Paints Or Removers (AREA)
Abstract
The invention is suitable for the technical field of anticorrosive coatings, and provides an epoxy drinking water coating and a preparation method thereof, wherein the epoxy drinking water coating comprises a component A and a component B; the component A comprises the following components in parts by mass: 38-40 parts of epoxy resin, 2.2-2.8 parts of superfine white carbon black, 7-12 parts of precipitated barium sulfate, 12-14 parts of lithopone, 22-24 parts of anatase titanium dioxide, 6-8 parts of xylene, 2-6 parts of isobutanol, 3.5-5.5 parts of DBE high boiling point solvent, 0.2-0.4 part of defoaming agent, 0.6-0.7 part of wetting dispersant, 1-2 parts of anti-settling agent, 1-5 parts of adhesion promoter, 0.3-0.6 part of flatting agent, 1-4 parts of anti-aging agent and 2-8 parts of light stabilizer; the component B comprises the following components in parts by mass: 60-90 parts of amine curing agent and 20-30 parts of dimethylbenzene. The anti-aging performance of the coating after the epoxy drinking water coating is coated is enhanced through the anti-aging agent, and the performance of substances which absorb or reflect ultraviolet rays of the epoxy drinking water coating is improved through the light stabilizer; the preparation method is simple and easy to operate, and saves time and labor while saving materials.
Description
Technical Field
The invention belongs to the technical field of anticorrosive coatings, and particularly relates to an epoxy drinking water coating and a preparation method thereof.
Background
The epoxy resin has excellent chemical corrosion resistance, has excellent adhesive force to a plurality of substrates, can be cured with a plurality of curing agents, has good compactness, strong rigidity and good heat resistance and wear resistance of a coating film, occupies an important position in the anticorrosive coating, can be prepared into the epoxy resin anticorrosive coating with different performances by adding different fillers and adjusting the variety of the curing agents, is suitable for different anticorrosive occasions, and achieves good protection effect. About 40% of the epoxy resins are used in the manufacture of epoxy coatings worldwide every year, most of which are used in the field of corrosion protection. In China, about 30 to 40 percent of epoxy resin is processed into various coatings, and the coatings have wide application in the fields of ships, civil engineering, household appliances, electromechanical industry and the like. The application of epoxy resin paint is limited by the cured epoxy resin which has high brittleness, poor impact resistance, poor acid and alkali resistance, poor flexibility and poor temperature resistance, so that the modification of epoxy resin is one of the important points of the research on epoxy resin anticorrosive paint.
However, the existing epoxy drinking water paint formula has some defects to cause the following problems: low hardness, poor water washing resistance, easy aging, poor ultraviolet resistance and short service life.
Disclosure of Invention
The invention provides an epoxy drinking water coating and a preparation method thereof, aiming at solving the problems of low hardness, poor water scouring resistance, easy aging, poor ultraviolet resistance and short service life of the existing epoxy drinking water coating in the background technology.
The invention is realized in such a way that the epoxy water-based paint comprises a component A and a component B;
the component A comprises the following components in parts by mass: 38-40 parts of epoxy resin, 2.2-2.8 parts of superfine white carbon black, 7-12 parts of precipitated barium sulfate, 12-14 parts of lithopone, 22-24 parts of anatase titanium dioxide, 6-8 parts of xylene, 2-6 parts of isobutanol, 3.5-5.5 parts of DBE high boiling point solvent, 0.2-0.4 part of defoaming agent, 0.6-0.7 part of wetting dispersant, 1-2 parts of anti-settling agent, 1-5 parts of adhesion promoter, 0.3-0.6 part of flatting agent, 1-4 parts of anti-aging agent and 2-8 parts of light stabilizer;
the component B comprises the following components in parts by mass: 60-90 parts of amine curing agent and 20-30 parts of dimethylbenzene;
the mass ratio of the component A to the component B is (2-4): 1.
preferably, the epoxy resin is a bis-a type epoxy resin, and the epoxy value of the bis-a type epoxy resin is 0.2.
Preferably, the amine curing agent is polyamide, and the amine value in the polyamide is 220 mgKOH/g.
Preferably, the aging inhibitor is a substance having a hindered amine structure.
Preferably, the light stabilizer is a light-shielding agent.
Preferably, the light-shielding agent is one of carbon black, zinc oxide and titanium oxide.
Preferably, the wetting dispersant is a modified siloxane polymer, the defoaming agent is a fluorinated silicone solution, and the leveling agent is polysiloxane.
Preferably, the component A also comprises 1-3 parts of antioxidant by mass.
A preparation method of the epoxy drinking water coating comprises the following steps:
adding epoxy resin, dimethylbenzene, isobutanol, a DBE high-boiling-point solvent, a defoaming agent, a wetting dispersant, an anti-settling agent, an adhesion promoter, a leveling agent, an anti-aging agent and a light stabilizer into a mixer, adjusting the rotating speed of the mixer to 600-800 r/min, and stirring for 5-15min to obtain a mixed solution;
step two, adding the mixed solution obtained in the step one into a reaction kettle, adding precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black while dispersing at the rotating speed of 1400-1600 r/min, dispersing for 35-55min until the barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black are fully dissolved, and grinding until the fineness is less than or equal to 50 mu m to obtain a component A;
adding the amine curing agent and xylene into a reaction kettle, stirring and mixing to obtain a component B, wherein the stirring speed is 300-800 r/min, and the stirring time is 10-20 min;
step four, mixing the component A and the component B according to the mass ratio of (2-4): 1, mixing and stirring to obtain the epoxy drinking water paint.
Compared with the prior art, the invention has the beneficial effects that: the thickness of the coating after the epoxy drinking water coating is coated can be increased by precipitating barium sulfate and lithopone, the strength, toughness and ductility of the epoxy resin coating can be improved by adopting the hydrophobic fumed silica as the superfine white carbon black, the structure is stable, the adhesive force and the scouring resistance of a paint film after the epoxy resin coating is coated are improved by adopting the adhesive force promoter, the ageing resistance of the coating after the epoxy drinking water coating is coated is enhanced by adopting the anti-aging agent, and the performance of substances capable of absorbing or reflecting ultraviolet rays of the epoxy drinking water coating is improved by adopting the light stabilizer; the preparation method is simple and easy to operate, and saves time and labor while saving materials.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a technical scheme that: an epoxy water-based paint comprises a component A and a component B;
the component A comprises the following components in parts by mass: 38-40 parts of epoxy resin, 2.2-2.8 parts of superfine white carbon black, 7-12 parts of precipitated barium sulfate, 12-14 parts of lithopone, 22-24 parts of anatase titanium dioxide, 6-8 parts of xylene, 2-6 parts of isobutanol, 3.5-5.5 parts of DBE high boiling point solvent, 0.2-0.4 part of defoaming agent, 0.6-0.7 part of wetting dispersant, 1-2 parts of anti-settling agent, 1-5 parts of adhesion promoter, 0.3-0.6 part of flatting agent, 1-4 parts of anti-aging agent and 2-8 parts of light stabilizer;
the component B comprises the following components in parts by mass: 60-90 parts of amine curing agent and 20-30 parts of dimethylbenzene;
the mass ratio of the component A to the component B is (2-4): 1.
in the invention, the component A is preferably the following components in parts by weight: 39 parts of epoxy resin, 2.5 parts of superfine white carbon black, 10 parts of precipitated barium sulfate, 13 parts of lithopone, 23 parts of anatase titanium dioxide, 7 parts of xylene, 4 parts of isobutanol, 4 parts of DBE high-boiling-point solvent, 0.3 part of defoaming agent, 0.6 part of wetting dispersant, 1.5 parts of anti-settling agent, 2 parts of adhesion promoter, 0.4 part of flatting agent, 3 parts of anti-aging agent and 4 parts of light stabilizer. The component B is preferably selected from the following components in parts by weight: 80 parts of amine curing agent and 25 parts of dimethylbenzene. The mass ratio of the component A to the component B is preferably 3: 1. the precipitated barium sulfate is stable in property, is insoluble in water, acid and alkali and has no toxic effect on human bodies, the hardness, wear resistance and chemical corrosion resistance of a paint film can be improved due to the introduction of the precipitated barium sulfate, and the hardness, compactness and stable chemical corrosion resistance of the coating can be improved due to the combination of the precipitated barium sulfate and lithopone. The superfine white carbon black is hydrophobic fumed silica, has stable structure, and can improve the strength, toughness and ductility of the epoxy resin coating.
The epoxy resin is double-A type epoxy resin, and the epoxy value of the double-A type epoxy resin is 0.2.
In the invention, the double A type epoxy resin finished product has good physical and mechanical properties, chemical resistance and electrical insulation property.
The amine curing agent is polyamide, and the amine value in the polyamide is 220 mgKOH/g.
The anti-aging agent is a substance with a hindered amine structure.
In the invention, the substance with the hindered amine structure ensures that the prepared epoxy drinking water paint has better long-term light aging resistance.
The light stabilizer is a light-shielding agent.
The light-shielding agent is one of carbon black, zinc oxide and titanium oxide.
In the present invention, the light-shielding agent is a substance which enables the epoxy drinking water paint to absorb or reflect ultraviolet rays, and the light-shielding agent is preferably carbon black, and the carbon black has the best shielding effect.
The wetting dispersant is a modified siloxane polymer, the defoaming agent is a fluorinated silicone solution, and the leveling agent is polysiloxane.
The component A also comprises 1-3 parts of antioxidant by mass.
In the present invention, the antioxidant is preferably present in an amount of 2 parts by mass.
A preparation method of the epoxy drinking water coating comprises the following steps:
adding epoxy resin, dimethylbenzene, isobutanol, a DBE high-boiling-point solvent, a defoaming agent, a wetting dispersant, an anti-settling agent, an adhesion promoter, a leveling agent, an anti-aging agent and a light stabilizer into a mixer, adjusting the rotating speed of the mixer to 600-800 r/min, and stirring for 5-15min to obtain a mixed solution;
step two, adding the mixed solution obtained in the step one into a reaction kettle, adding precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black while dispersing at the rotating speed of 1400-1600 r/min, dispersing for 35-55min until the barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black are fully dissolved, and grinding until the fineness is less than or equal to 50 mu m to obtain a component A;
adding the amine curing agent and xylene into a reaction kettle, stirring and mixing to obtain a component B, wherein the stirring speed is 300-800 r/min, and the stirring time is 10-20 min;
step four, mixing the component A and the component B according to the mass ratio of (2-4): 1, mixing and stirring to obtain the epoxy drinking water paint.
In the invention, epoxy resin, dimethylbenzene, isobutanol, a DBE high-boiling point solvent, a defoaming agent, a wetting dispersant, an anti-settling agent, an adhesion promoter, a leveling agent, an anti-aging agent and a light stabilizer are added into a mixer, the rotating speed of the mixer is adjusted to 700r/min, and the mixture is stirred for 10min to obtain a mixed solution; adding the mixed solution into a reaction kettle, adding precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black while dispersing at the rotating speed of 1500r/min, dispersing for 40min until the barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black are fully dissolved, grinding to the fineness of 40 mu m to obtain a component A, adding an amine curing agent and xylene into the reaction kettle, stirring and mixing to obtain a component B, wherein the stirring rotating speed is 500r/min, and the stirring time is 15 min; and mixing and stirring the component A and the component B according to the mass ratio of (3: 1) to obtain the epoxy drinking water paint.
In order to further illustrate the present invention, the following detailed description of a protective film and a method for manufacturing the same is provided in connection with examples, which should not be construed as limiting the scope of the present invention.
Example 1
An epoxy water-based paint comprises a component A and a component B;
the component A comprises the following components in parts by mass: 39 parts of epoxy resin, 2.6 parts of superfine white carbon black, 8 parts of precipitated barium sulfate, 13 parts of lithopone, 23 parts of anatase titanium dioxide, 7 parts of dimethylbenzene, 4 parts of isobutanol, 4 parts of DBE high-boiling-point solvent, 0.3 part of defoaming agent, 0.65 part of wetting dispersant, 1.5 parts of anti-settling agent, 3 parts of adhesion promoter, 0.4 part of flatting agent, 2 parts of anti-aging agent and 5 parts of light stabilizer;
the component B comprises the following components in parts by mass: 70 parts of amine curing agent and 25 parts of dimethylbenzene;
the mass ratio of the component A to the component B is 3: 1.
a preparation method of the epoxy drinking water coating comprises the following steps:
adding epoxy resin, dimethylbenzene, isobutanol, a DBE high-boiling-point solvent, a defoaming agent, a wetting dispersant, an anti-settling agent, an adhesion promoter, a leveling agent, an anti-aging agent and a light stabilizer into a mixer, adjusting the rotating speed of the mixer to 800r/min, and stirring for 15min to obtain a mixed solution;
step two, adding the mixed solution obtained in the step one into a reaction kettle, adding precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black while dispersing at the rotating speed of 1600r/min, dispersing for 55min until the precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black are fully dissolved, and grinding until the fineness is 45 microns to obtain a component A;
adding the amine curing agent and the dimethylbenzene into a reaction kettle, stirring and mixing to obtain a component B, wherein the stirring speed is 800r/min, and the stirring time is 20 min;
step four, mixing the component A and the component B according to a mass ratio of 3: 1, mixing and stirring to obtain the epoxy water-based paint.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An epoxy water-based paint is characterized by comprising a component A and a component B;
the component A comprises the following components in parts by mass: 38-40 parts of epoxy resin, 2.2-2.8 parts of superfine white carbon black, 7-12 parts of precipitated barium sulfate, 12-14 parts of lithopone, 22-24 parts of anatase titanium dioxide, 6-8 parts of xylene, 2-6 parts of isobutanol, 3.5-5.5 parts of DBE high boiling point solvent, 0.2-0.4 part of defoaming agent, 0.6-0.7 part of wetting dispersant, 1-2 parts of anti-settling agent, 1-5 parts of adhesion promoter, 0.3-0.6 part of flatting agent, 1-4 parts of anti-aging agent and 2-8 parts of light stabilizer;
the component B comprises the following components in parts by mass: 60-90 parts of amine curing agent and 20-30 parts of dimethylbenzene;
the mass ratio of the component A to the component B is (2-4): 1.
2. the epoxy water-based paint according to claim 1, wherein the epoxy resin is a bis-a type epoxy resin, and the epoxy value of the bis-a type epoxy resin is 0.2.
3. The epoxy water-based paint according to claim 1, wherein the amine-based curing agent is polyamide, and the amine value of the polyamide is 220 mgKOH/g.
4. The epoxy water-based paint according to claim 1, wherein the anti-aging agent is a substance having a hindered amine structure.
5. The epoxy water-based paint according to claim 1, wherein the light stabilizer is a light-shielding agent.
6. The epoxy water-based paint according to claim 5, wherein the light-shielding agent is one of carbon black, zinc oxide and titanium oxide.
7. The epoxy water-based paint according to claim 1, wherein the wetting dispersant is a modified siloxane polymer, the defoamer is a fluorinated silicone solution, and the leveling agent is polysiloxane.
8. The epoxy water-based paint according to claim 1, wherein the component A further comprises 1-3 parts by mass of an antioxidant.
9. A method of preparing an epoxy drinking water paint according to any one of claims 1 to 8, comprising the steps of:
adding epoxy resin, dimethylbenzene, isobutanol, a DBE high-boiling-point solvent, a defoaming agent, a wetting dispersant, an anti-settling agent, an adhesion promoter, a leveling agent, an anti-aging agent and a light stabilizer into a mixer, adjusting the rotating speed of the mixer to 600-800 r/min, and stirring for 5-15min to obtain a mixed solution;
step two, adding the mixed solution obtained in the step one into a reaction kettle, adding precipitated barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black while dispersing at the rotating speed of 1400-1600 r/min, dispersing for 35-55min until the barium sulfate, lithopone, anatase titanium dioxide and superfine white carbon black are fully dissolved, and grinding until the fineness is less than or equal to 50 mu m to obtain a component A;
adding the amine curing agent and xylene into a reaction kettle, stirring and mixing to obtain a component B, wherein the stirring speed is 300-800 r/min, and the stirring time is 10-20 min;
step four, mixing the component A and the component B according to the mass ratio of (2-4): 1, mixing and stirring to obtain the epoxy drinking water paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225805.8A CN112457747A (en) | 2020-11-05 | 2020-11-05 | Epoxy drinking water coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011225805.8A CN112457747A (en) | 2020-11-05 | 2020-11-05 | Epoxy drinking water coating and preparation method thereof |
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| CN101735708A (en) * | 2010-01-12 | 2010-06-16 | 广州飞宇建材科技有限公司 | Anti-ageing epoxy paint, preparation method and application thereof |
| CN103360905A (en) * | 2013-07-22 | 2013-10-23 | 天长市开林化工有限公司 | Epoxy potable water tank paint and its preparation method |
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2020
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| CN101735708A (en) * | 2010-01-12 | 2010-06-16 | 广州飞宇建材科技有限公司 | Anti-ageing epoxy paint, preparation method and application thereof |
| CN103360905A (en) * | 2013-07-22 | 2013-10-23 | 天长市开林化工有限公司 | Epoxy potable water tank paint and its preparation method |
| CN103992725A (en) * | 2014-05-21 | 2014-08-20 | 珠海市威旗防腐科技有限公司 | Drinking water tank paint and preparation method thereof |
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