CN113088144A - Low-temperature curing water-based amino baking varnish coating applied to metal and preparation method thereof - Google Patents
Low-temperature curing water-based amino baking varnish coating applied to metal and preparation method thereof Download PDFInfo
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- CN113088144A CN113088144A CN202110247515.1A CN202110247515A CN113088144A CN 113088144 A CN113088144 A CN 113088144A CN 202110247515 A CN202110247515 A CN 202110247515A CN 113088144 A CN113088144 A CN 113088144A
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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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a low-temperature curing water-based amino baking varnish coating applied to metal and a preparation method thereof, wherein the coating comprises the following raw materials in parts by mass: 30-60 parts of acrylic resin, 0.03-0.3 part of low-temperature amino C4-15 parts of neutralizer, 0.2-3 parts of defoamer, 0.03-0.3 part of wetting agent, 0.05-0.5 part of dispersant, 0.1-0.6 part of thickener, 5-19 parts of titanium dioxide, 7-23 parts of deionized water, 1-5 parts of adhesion promoter and 0.3-3 parts of salt mist resistant auxiliary agent.
Description
Technical Field
The invention relates to the technical field of paint, in particular to a low-temperature curing water-based amino baking paint applied to metal and a preparation method thereof.
Background
The water-based industrial paint is an environment-friendly industrial paint, is low in VOC (volatile organic compounds), can reduce the pollution of the industrial paint to the atmosphere, reduce the possibility of explosion, fire and the like, and greatly improve the construction safety. The aqueous amino baking varnish is a coating with high hardness, high adhesive force, excellent solvent resistance and good weather resistance which can be formed by crosslinking and curing a molecular chain at a high temperature in a short time, and most of the baking varnishes on the current aluminum profiles have the curing temperature of 140-180 ℃. For the aspect of saving energy, reducing the energy consumption and quickly drying the coating become an important course.
In view of the above problems, a paint capable of completing a paint baking process at a low temperature and a method for preparing the same are provided.
Disclosure of Invention
The invention aims to provide a low-temperature curing water-based amino baking varnish coating applied to metal and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 30-60 parts of acrylic resin, 0.2-3 parts of low-temperature amino C4, 0.2-3 parts of neutralizing agent, 0.06-0.2 part of defoaming agent, 0.03-0.3 part of wetting agent, 0.05-0.5 part of dispersing agent, 0.1-0.6 part of thickening agent, 5-19 parts of titanium dioxide, 7-23 parts of deionized water, 1-5 parts of adhesion promoter and 0.3-3 parts of salt spray resistant auxiliary agent.
As a further scheme of the invention: the composite material comprises the following raw materials in parts by mass: 45-50 parts of acrylic resin, 0.5-1 part of neutralizing agent, 0.1-0.1 part of defoaming agent, 0.1-0.2 part of wetting agent, 0.1-0.2 part of dispersing agent, 0.2-0.4 part of thickening agent, 10-16 parts of titanium dioxide, 10-20 parts of deionized water, 2-3 parts of adhesion promoter and 0.5-1 part of salt spray resistant auxiliary agent.
As a further scheme of the invention: the composite material comprises the following raw materials in parts by mass: 47 parts of acrylic resin, 8 parts of low-temperature amino C, 0.7 part of neutralizer, 0.15 part of defoaming agent, 0.15 part of wetting agent, 0.14 part of dispersing agent, 0.3 part of thickening agent, 14 parts of titanium dioxide, 15 parts of deionized water, 2.5 parts of adhesion promoter and 0.7 part of salt spray resistant auxiliary agent.
As a further scheme of the invention: the thickening agent is one or two of polyurethane thickening agent, polyacrylate thickening auxiliary agent and cellulose thickening agent.
The preparation method of the low-temperature curing water-based amino baking varnish coating applied to metal comprises the following steps;
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; neutralizing agent, defoaming agent, wetting agent, dispersant, thickener and adhesion promoter;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the solution is stirred by a stirrer in the adding process, short-wave radiation is adopted to irradiate the solution until no gas is generated inside the solution, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, and meanwhile, the raw materials can be assisted to be fully mixed;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
As a further scheme of the invention: the stirring speed in the fourth step is 2000 r/min.
As a still further scheme of the invention: and (4) fully grinding the titanium dioxide obtained in the fourth step by a grinder, and sieving the titanium dioxide with a 600-mesh sieve.
As a still further scheme of the invention: the thickening agent is a polyurethane type thickening agent.
As a still further scheme of the invention: the defoaming agent is an organic silicon type defoaming agent.
Compared with the prior art, the invention has the beneficial effects that: the baking varnish coating provided by the application can be baked at the temperature of 110-120 ℃, is different from the high-temperature condition of more than 150 ℃ required by the traditional baking varnish mode, can be understood as a low-temperature baking varnish technology, can reduce the baking temperature and reduce the energy loss.
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. 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 low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 30 parts of acrylic resin, 0.2 part of low-temperature amino C4 part of neutralizer, 0.06 part of defoaming agent, 0.03 part of wetting agent, 0.05 part of dispersing agent, 0.1 part of thickening agent, 5 parts of titanium dioxide, 7 parts of deionized water, 1 part of adhesion promoter and 0.3 part of salt spray resistant auxiliary agent;
the preparation method of the low-temperature curing water-based amino baking varnish coating comprises the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; the adhesive comprises a neutralizing agent, a defoaming agent, a wetting agent, a dispersing agent, a thickening agent and an adhesion promoter, wherein the thickening agent is a polyurethane type thickening agent, and the defoaming agent is an organic silicon type defoaming agent;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the stirring is carried out through a stirrer in the adding process, the solution is irradiated by short-wave radiation until no gas is generated inside, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, meanwhile, the raw materials can be fully mixed, the stirring speed is 2000r/min, the titanium dioxide is fully ground through a grinding machine and passes through a 600-mesh screen;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
Example 2
The low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 60 parts of acrylic resin, 15 parts of low-temperature amino C, 3 parts of neutralizer, 0.2 part of defoamer, 0.3 part of wetting agent, 0.5 part of dispersant, 0.6 part of thickener, 19 parts of titanium pigment, 23 parts of deionized water, 5 parts of adhesion promoter and 3 parts of salt spray resistant additive;
the preparation method of the low-temperature curing water-based amino baking varnish coating comprises the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; the adhesive comprises a neutralizing agent, a defoaming agent, a wetting agent, a dispersing agent, a thickening agent and an adhesion promoter, wherein the thickening agent is a polyurethane type thickening agent, and the defoaming agent is an organic silicon type defoaming agent;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the stirring is carried out through a stirrer in the adding process, the solution is irradiated by short-wave radiation until no gas is generated inside, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, meanwhile, the raw materials can be fully mixed, the stirring speed is 2000r/min, the titanium dioxide is fully ground through a grinding machine and passes through a 600-mesh screen;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
Example 3
The low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 50 parts of acrylic resin, 50 parts of low-temperature amino C10 parts, 1 part of neutralizer, 00.1 parts of defoamer, 00.2 parts of wetting agent, 0.2 part of dispersant, 0.4 part of thickener, 16 parts of titanium pigment, 20 parts of deionized water, 3 parts of adhesion promoter and 1 part of salt spray resistant additive;
the preparation method of the low-temperature curing water-based amino baking varnish coating comprises the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; the adhesive comprises a neutralizing agent, a defoaming agent, a wetting agent, a dispersing agent, a thickening agent and an adhesion promoter, wherein the thickening agent is a polyurethane type thickening agent, and the defoaming agent is an organic silicon type defoaming agent;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the stirring is carried out through a stirrer in the adding process, the solution is irradiated by short-wave radiation until no gas is generated inside, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, meanwhile, the raw materials can be fully mixed, the stirring speed is 2000r/min, the titanium dioxide is fully ground through a grinding machine and passes through a 600-mesh screen;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
Example 4
The low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 45 parts of acrylic resin, 9 parts of low-temperature amino C, 0.5 part of neutralizer, 0.1 part of defoaming agent, 0.1 part of wetting agent, 0.1 part of dispersing agent, 0.2 part of thickening agent, 10 parts of titanium dioxide, 10 parts of deionized water, 2 parts of adhesion promoter and 0.5 part of salt spray resistant auxiliary agent;
the preparation method of the low-temperature curing water-based amino baking varnish coating comprises the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; the adhesive comprises a neutralizing agent, a defoaming agent, a wetting agent, a dispersing agent, a thickening agent and an adhesion promoter, wherein the thickening agent is a polyurethane type thickening agent, and the defoaming agent is an organic silicon type defoaming agent;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the stirring is carried out through a stirrer in the adding process, the solution is irradiated by short-wave radiation until no gas is generated inside, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, meanwhile, the raw materials can be fully mixed, the stirring speed is 2000r/min, the titanium dioxide is fully ground through a grinding machine and passes through a 600-mesh screen;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
Example 5
The low-temperature curing water-based amino baking varnish coating applied to metal comprises the following raw materials in parts by weight: 47 parts of acrylic resin, 8 parts of low-temperature amino C, 0.7 part of neutralizer, 0.15 part of defoaming agent, 0.15 part of wetting agent, 0.14 part of dispersing agent, 0.3 part of thickening agent, 14 parts of titanium dioxide, 15 parts of deionized water, 2.5 parts of adhesion promoter and 0.7 part of salt spray resistant auxiliary agent;
the preparation method of the low-temperature curing water-based amino baking varnish coating comprises the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; the adhesive comprises a neutralizing agent, a defoaming agent, a wetting agent, a dispersing agent, a thickening agent and an adhesion promoter, wherein the thickening agent is a polyurethane type thickening agent, and the defoaming agent is an organic silicon type defoaming agent;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the stirring is carried out through a stirrer in the adding process, the solution is irradiated by short-wave radiation until no gas is generated inside, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, meanwhile, the raw materials can be fully mixed, the stirring speed is 2000r/min, the titanium dioxide is fully ground through a grinding machine and passes through a 600-mesh screen;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
Practical use of examples 1 to 5 and comparative example 1 (replacing the low-temperature amino group in example 5 with an equivalent amount of ionized water) and data monitoring analysis of the paint layer obtained by hand were carried out;
categories | Time of baking finish | Adhesion force | Salt spray resistance time | Alcohol-resistant wiping | Hardness of |
Example 1 | 45 minutes | Level 0 | >72 hours | >200 times (one time) | 2H |
Example 2 | 40 minutes | Level 0 | >72 hours | >180 times (times) | 2H |
Example 3 | 30 minutes | Level 0 | >72 hours | >190 times (twice) | 2H |
Example 4 | 20 minutes | Level 0 | >72 hours | >210 times | 2H |
Example 5 | 15 minutes | Level 0 | >72 hours | >220 times (twice) | 2H |
Comparative example 1 | 100 minutes | Level 0 | >15 hours | >100 times (twice) | H |
It should be noted that the baking finish temperature of the above embodiment is 110 ℃, and can be between 110 and 120 ℃ in practical use, and the baking finish temperature can be reduced by the baking finish method, so as to play a role in energy saving.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The low-temperature curing water-based amino baking varnish coating applied to metal is characterized by comprising the following raw materials in parts by weight: 30-60 parts of acrylic resin, 0.2-3 parts of low-temperature amino C4, 0.2-3 parts of neutralizing agent, 0.06-0.2 part of defoaming agent, 0.03-0.3 part of wetting agent, 0.05-0.5 part of dispersing agent, 0.1-0.6 part of thickening agent, 5-19 parts of titanium dioxide, 7-23 parts of deionized water, 1-5 parts of adhesion promoter and 0.3-3 parts of salt spray resistant auxiliary agent.
2. The low-temperature curing water-based amino baking paint applied to metal according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 45-50 parts of acrylic resin, 0.5-1 part of neutralizing agent, 0.1-0.1 part of defoaming agent, 0.1-0.2 part of wetting agent, 0.1-0.2 part of dispersing agent, 0.2-0.4 part of thickening agent, 10-16 parts of titanium dioxide, 10-20 parts of deionized water, 2-3 parts of adhesion promoter and 0.5-1 part of salt spray resistant auxiliary agent.
3. The low-temperature curing water-based amino baking paint applied to metal according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 47 parts of acrylic resin, 8 parts of low-temperature amino C, 0.7 part of neutralizer, 0.15 part of defoaming agent, 0.15 part of wetting agent, 0.14 part of dispersing agent, 0.3 part of thickening agent, 14 parts of titanium dioxide, 15 parts of deionized water, 2.5 parts of adhesion promoter and 0.7 part of salt spray resistant auxiliary agent.
4. The low temperature curing water-based amino baking varnish coating applied to metals as claimed in any one of claims 1 to 3, wherein the thickener is one or a combination of two of polyurethane thickener, polyacrylate thickener and cellulose thickener.
5. A method for preparing the low temperature curing water-based amino baking varnish coating applied to the metal according to any one of the claims 1 to 4, characterized by comprising the following steps:
the method comprises the following steps: obtaining raw materials in corresponding parts by mass for later use;
step two: firstly, primarily mixing acrylic resin and deionized water in raw materials to obtain initial stock solution, and adding hydrogen peroxide solution into the initial stock solution;
step three: adding auxiliary agents with corresponding weight, wherein the auxiliary agents comprise; neutralizing agent, defoaming agent, wetting agent, dispersant, thickener and adhesion promoter;
step four: then, the rest raw materials are sequentially added into the initial stock solution, the solution is stirred by a stirrer in the adding process, short-wave radiation is adopted to irradiate the solution until no gas is generated inside the solution, the hydrogen peroxide in the solution can be decomposed by the short-wave radiation, the reducing substances in the solution can be oxidized by the oxygen upwelling generated in the decomposing process, the problem of later pigment discoloration is avoided, and meanwhile, the raw materials can be assisted to be fully mixed;
step five: finally, the target paint can be obtained by ultrasonic stirring for 30 min.
6. The low temperature curing aqueous amino baking varnish coating applied on metal of claim 5, wherein the stirring speed in step four is 2000 r/min.
7. The low-temperature curing water-based amino baking paint applied to metal of claim 5, wherein the titanium dioxide in step four is fully ground by a grinder and then passes through a 600-mesh screen.
8. The low temperature curing aqueous amino baking varnish coating applied on metals according to claim 5, characterized in that the thickener is a polyurethane-type thickener.
9. The low temperature curing water-based amino baking varnish coating applied on metal as recited in claim 5, wherein the defoaming agent is a silicone type defoaming agent.
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