CN111423788A - Preparation method of epoxy resin aqueous paint - Google Patents
Preparation method of epoxy resin aqueous paint Download PDFInfo
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- CN111423788A CN111423788A CN202010391770.9A CN202010391770A CN111423788A CN 111423788 A CN111423788 A CN 111423788A CN 202010391770 A CN202010391770 A CN 202010391770A CN 111423788 A CN111423788 A CN 111423788A
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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
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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
- C09D7/43—Thickening agents
-
- 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
- C09D7/45—Anti-settling agents
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of paint, in particular to a preparation method of epoxy resin aqueous paint, which comprises the following steps: s1, preparing materials and preparing raw materials; s2, grinding, namely firstly, selecting a filler and epoxy resin to grind for 10-15min, and adding an emulsion and an anti-settling agent to continue grinding for 20-30min after finishing grinding to form color paste; s3, stirring, heating the color paste to 40-50 ℃, adding water and an antioxidant, stirring the color paste for 3-6min, and pouring the color paste into a sand mill for grinding after the stirring is finished; s4, enameling color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to enable the temperature rise rate to be 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 20-30min, and adding a curing agent into the mixture to stir; and S5, canning and sealing the paint. The invention has the characteristic of being beneficial to preventing the paint from cracking.
Description
Technical Field
The invention relates to the technical field of paint, in particular to a preparation method of epoxy resin aqueous paint.
Background
The water paint is a coating which uses water diluent and does not contain organic solvent, does not contain benzene, toluene, xylene, formaldehyde and free TDI toxic heavy metal, is non-toxic and non-irritant, is harmless to human body, does not pollute environment, has a plump paint film, is glittering and translucent, has good flexibility, and has the characteristics of water resistance, wear resistance, aging resistance, yellowing resistance, quick drying, convenient use and the like. Can be used in: wood ware, metal, plastic, glass, building surface and other materials. However, in the process of drying and oxidation, the existing water-based paint is easy to cause the tension on the surface of the paint to increase, so that the paint is easy to crack, the appearance is influenced, and the condition that the paint falls off is easy to cause.
Disclosure of Invention
The invention aims to solve the problem that the paint in the prior art is easy to crack, and provides a preparation method of an epoxy resin aqueous paint.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of epoxy resin aqueous paint is designed, and comprises the following steps: the method comprises the following steps:
s1, preparing materials, namely: 2-6 parts of an auxiliary agent, 60-65 parts of a filler, 25-30 parts of an emulsion, 3-7 parts of water, 5-8 parts of a thickening agent, 1-2 parts of an antioxidant, 1-2 parts of an anti-cracking agent, 4-6 parts of a curing agent, 20-40 parts of epoxy resin and 2-3 parts of an anti-settling agent;
s2, grinding, namely firstly, selecting a filler and epoxy resin to grind for 10-15min, and adding an emulsion and an anti-settling agent to continue grinding for 20-30min after finishing grinding to form color paste;
s3, stirring, heating the color paste to 40-50 ℃, adding water and an antioxidant, stirring the color paste for 3-6min, and pouring the color paste into a sand mill for grinding after the stirring is finished;
s4, enameling color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to make the temperature rise rate 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 20-30min, adding a curing agent into the mixture, stirring, and standing the mixture for 2-3h at the temperature of 10-25 ℃ in the shade to prepare the epoxy resin water-based paint;
and S5, canning and sealing the paint.
Preferably, the auxiliary agent comprises a defoaming agent, a leveling agent and a drier, wherein the ratio of the defoaming agent to the leveling agent to the drier is 5:2: 3.
Preferably, the anti-settling agent is one or more of oxyethylene fatty amine, polyoxyethylene fatty alcohol sulfate and polyglycol ether.
Preferably, the thickener when formulated comprises the steps of:
a1, adding diethyl ether and amine oxide into a reaction kettle;
a2, heating the reaction kettle to 50-60 ℃, preserving heat for 10-20min, heating to 120 ℃ at 100-;
a3, standing and cooling for 4-5h, and taking out the thickener prepared by oxidation.
Preferably, in the step S3, when the color paste is stirred, the stirring motor is used for stirring, and the rotation speed is 15 r/S.
Preferably, the curing agent is one or more of amino resin, dicyandiamide and hydrazide.
The preparation method of the epoxy resin aqueous paint provided by the invention has the beneficial effects that: the anti-cracking agent is added, so that the viscosity among paint molecules is enhanced, the anti-deformation capacity of the paint is increased, and meanwhile, the anti-cracking agent is combined with the anti-cracking agent, so that cracks are effectively prevented, the paint surface is prevented from falling off, and the service life of the paint is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
A preparation method of epoxy resin aqueous paint comprises the following steps: the method is characterized by comprising the following steps:
s1, preparing materials, namely: the paint is prepared from 2 parts of an auxiliary agent, 60 parts of a filler, 25 parts of an emulsion, 3 parts of water, 5 parts of a thickening agent, 1 part of an antioxidant, 1 part of an anti-cracking agent, 4 parts of a curing agent, 20 parts of epoxy resin and 2 parts of an anti-settling agent, wherein the thickening agent is added, so that the viscosity among paint molecules is enhanced, and the paint is matched with the anti-cracking agent, thereby being beneficial to preventing the surface of the paint from cracking and preventing the paint from falling off;
s2, grinding, namely firstly, selecting a filler and epoxy resin for grinding for 10min, adding an emulsion and an anti-settling agent after finishing grinding for 20min to form color paste, and adding the anti-settling agent to prevent the material from starch precipitation, thereby being beneficial to the grinding effect;
s3, stirring, heating the color paste to 40 ℃, adding water and an antioxidant, stirring the color paste for 3min, pouring the color paste into a sand mill for grinding after the stirring is finished, and adding the antioxidant to enhance the oxidation resistance of the paint and prevent the paint from being oxidized to cause dark color;
s4, enameling the color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to enable the temperature rise rate to be 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 20min, adding a curing agent into the color paste for stirring, placing the color paste to stand for 2h in the shade at 10 ℃ to prepare the epoxy resin water-based paint, and heating and stirring the color paste to facilitate the mutual fusion effect among all substances in the paint and the uniform mixing of the paint;
and S5, canning and sealing the paint.
The auxiliary agent comprises an antifoaming agent, a leveling agent and a drier, wherein the ratio of the antifoaming agent to the leveling agent to the drier is 5:2:3, and the addition of the auxiliary agent is favorable for preventing the paint from foaming and is favorable for the drying speed of the paint.
The anti-settling agent is one or more of ethylene oxide fatty amine, polyoxyethylene fatty alcohol sulfate and polyglycol ether.
The thickener when formulated comprises the steps of:
a1, adding diethyl ether and amine oxide into a reaction kettle;
a2, heating the reaction kettle to 50 ℃, preserving heat for 10min, heating to 100 ℃ after finishing, preserving heat for 10min, finally heating to 200 ℃, and preserving heat for 45 min;
a3, standing and cooling for 4 hours, and taking out the thickener prepared by oxidation.
When the color paste is stirred in step S3, the color paste may be stirred by a stirring motor at a rotation speed of 15 r/S.
The curing agent is one or more of amino resin, dicyandiamide and hydrazide.
Example 2
A preparation method of epoxy resin aqueous paint comprises the following steps: the method is characterized by comprising the following steps:
s1, preparing materials, namely: 4 parts of an auxiliary agent, 63 parts of a filler, 27 parts of an emulsion, 5 parts of water, 6 parts of a thickening agent, 1.5 parts of an antioxidant, 1.5 parts of an anti-cracking agent, 5 parts of a curing agent, 30 parts of epoxy resin and 2.5 parts of an anti-settling agent, wherein the thickening agent is added, so that the viscosity among paint molecules is enhanced, and the anti-cracking agent is matched with the anti-cracking agent, so that the paint is favorable for preventing cracks from being generated on the surface of the paint and preventing the paint from falling off;
s2, grinding, namely firstly, selecting a filler and epoxy resin for grinding for 13min, adding an emulsion and an anti-settling agent after finishing grinding for 15min to form color paste, and adding the anti-settling agent to prevent the material from starch precipitation, thereby being beneficial to the grinding effect;
s3, stirring, heating the color paste to 45 ℃, adding water and an antioxidant, stirring the color paste for 4min, pouring the color paste into a sand mill for grinding after the stirring is finished, and adding the antioxidant to enhance the oxidation resistance of the paint and prevent the paint from being oxidized to cause dark color;
s4, enameling the color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to enable the temperature rise rate to be 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 25min, adding a curing agent into the color paste for stirring, placing the color paste to stand for 2.5h at 23 ℃ in the shade, and preparing the epoxy resin water-based paint;
and S5, canning and sealing the paint.
The auxiliary agent comprises an antifoaming agent, a leveling agent and a drier, wherein the ratio of the antifoaming agent to the leveling agent to the drier is 5:2:3, and the addition of the auxiliary agent is favorable for preventing the paint from foaming and is favorable for the drying speed of the paint.
The anti-settling agent is one or more of ethylene oxide fatty amine, polyoxyethylene fatty alcohol sulfate and polyglycol ether.
The thickener when formulated comprises the steps of:
a1, adding diethyl ether and amine oxide into a reaction kettle;
a2, heating the reaction kettle to 55 ℃, preserving heat for 15min, heating to 110 ℃ after finishing, preserving heat for 13min, finally heating to 225 ℃, and preserving heat for 52 min;
a3, standing and cooling for 4.5 hours, and taking out the thickener prepared by oxidation.
When the color paste is stirred in step S3, the color paste may be stirred by a stirring motor at a rotation speed of 15 r/S.
The curing agent is one or more of amino resin, dicyandiamide and hydrazide.
Example 3
A preparation method of epoxy resin aqueous paint comprises the following steps: the method is characterized by comprising the following steps:
s1, preparing materials, namely: 6 parts of an auxiliary agent, 65 parts of a filler, 30 parts of an emulsion, 7 parts of water, 8 parts of a thickening agent, 2 parts of an antioxidant, 2 parts of an anti-cracking agent, 6 parts of a curing agent, 40 parts of epoxy resin and 3 parts of an anti-settling agent, wherein the thickening agent is added, so that the viscosity among paint molecules is enhanced, and the thickening agent is matched with the anti-cracking agent, thereby being beneficial to preventing the surface of paint from generating cracks and preventing the paint from falling off;
s2, grinding, namely firstly, selecting a filler and epoxy resin for grinding for 15min, adding an emulsion and an anti-settling agent after finishing grinding for 30min to form color paste, and adding the anti-settling agent to prevent the material from starch precipitation, thereby being beneficial to the grinding effect;
s3, stirring, heating the color paste to 50 ℃, adding water and an antioxidant, stirring the color paste for 6min, pouring the color paste into a sand mill for grinding after the stirring is finished, and adding the antioxidant to enhance the oxidation resistance of the paint and prevent the paint from being oxidized to cause dark color;
s4, enameling the color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to enable the temperature rise rate to be 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 30min, adding a curing agent into the color paste for stirring, placing the color paste to be at 25 ℃ and standing for 3h in the shade, thus preparing the epoxy resin water-based paint, heating and stirring the color paste, facilitating the mutual fusion effect among all substances in the paint and uniformly mixing the paint;
and S5, canning and sealing the paint.
The auxiliary agent comprises an antifoaming agent, a leveling agent and a drier, wherein the ratio of the antifoaming agent to the leveling agent to the drier is 5:2:3, and the addition of the auxiliary agent is favorable for preventing the paint from foaming and is favorable for the drying speed of the paint.
The anti-settling agent is one or more of ethylene oxide fatty amine, polyoxyethylene fatty alcohol sulfate and polyglycol ether.
The thickener when formulated comprises the steps of:
a1, adding diethyl ether and amine oxide into a reaction kettle;
a2, heating the reaction kettle to 60 ℃, preserving heat for 20min, heating to 120 ℃ after finishing, preserving heat for 15min, finally heating to 250 ℃, and preserving heat for 60 min;
a3, standing and cooling for 5 hours, and taking out the thickener prepared by oxidation.
When the color paste is stirred in step S3, the color paste may be stirred by a stirring motor at a rotation speed of 15 r/S.
The curing agent is one or more of amino resin, dicyandiamide and hydrazide.
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 (6)
1. The preparation method of the epoxy resin aqueous paint is characterized by comprising the following steps:
s1, preparing materials, namely: 2-6 parts of an auxiliary agent, 60-65 parts of a filler, 25-30 parts of an emulsion, 3-7 parts of water, 5-8 parts of a thickening agent, 1-2 parts of an antioxidant, 1-2 parts of an anti-cracking agent, 4-6 parts of a curing agent, 20-40 parts of epoxy resin and 2-3 parts of an anti-settling agent;
s2, grinding, namely firstly, selecting a filler and epoxy resin to grind for 10-15min, and adding an emulsion and an anti-settling agent to continue grinding for 20-30min after finishing grinding to form color paste;
s3, stirring, heating the color paste to 40-50 ℃, adding water and an antioxidant, stirring the color paste for 3-6min, and pouring the color paste into a sand mill for grinding after the stirring is finished;
s4, enameling color paste, adding an auxiliary agent, a thickening agent and an anti-cracking agent into the color paste, heating the color paste to make the temperature rise rate 10 ℃ per hour, stopping heating when the temperature rises to 50 ℃, keeping the temperature for 20-30min, adding a curing agent into the mixture, stirring, and standing the mixture for 2-3h at the temperature of 10-25 ℃ in the shade to prepare the epoxy resin water-based paint;
and S5, canning and sealing the paint.
2. The preparation method of the epoxy resin aqueous paint as claimed in claim 1, wherein the auxiliary agent comprises an antifoaming agent, a leveling agent and a drier, wherein the ratio of the antifoaming agent to the leveling agent to the drier is 5:2: 3.
3. The method for preparing an epoxy resin aqueous paint according to claim 1, wherein the anti-settling agent is one or more of an oxyethylene fatty amine, a polyoxyethylene fatty alcohol sulfate and a polyglycol ether.
4. The method for preparing the epoxy resin aqueous paint as claimed in claim 1, wherein the thickener comprises the following steps:
a1, adding diethyl ether and amine oxide into a reaction kettle;
a2, heating the reaction kettle to 50-60 ℃, preserving heat for 10-20min, heating to 120 ℃ at 100-;
a3, standing and cooling for 4-5h, and taking out the thickener prepared by oxidation.
5. The method of claim 1, wherein the color paste is stirred by a stirring motor at a speed of 15r/S in step S3.
6. The method for preparing the epoxy resin aqueous paint as claimed in claim 1, wherein the curing agent is one or more of amino resin, dicyandiamide and hydrazide.
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| CN202010391770.9A CN111423788A (en) | 2020-05-11 | 2020-05-11 | Preparation method of epoxy resin aqueous paint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115895448A (en) * | 2022-12-07 | 2023-04-04 | 东莞利法宝玩具制品有限公司 | Environment-friendly water-based paint and application |
| CN116535930A (en) * | 2023-03-07 | 2023-08-04 | 中海油常州涂料化工研究院有限公司 | High-crosslinking-density water-based epoxy anticorrosive paint and preparation method thereof |
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|---|---|---|---|---|
| CN115895448A (en) * | 2022-12-07 | 2023-04-04 | 东莞利法宝玩具制品有限公司 | Environment-friendly water-based paint and application |
| CN116535930A (en) * | 2023-03-07 | 2023-08-04 | 中海油常州涂料化工研究院有限公司 | High-crosslinking-density water-based epoxy anticorrosive paint and preparation method thereof |
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