CN111286243A - Water-based acrylic silver paint suitable for mechanical equipment and preparation method thereof - Google Patents
Water-based acrylic silver paint suitable for mechanical equipment and preparation method thereof Download PDFInfo
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- CN111286243A CN111286243A CN202010216611.5A CN202010216611A CN111286243A CN 111286243 A CN111286243 A CN 111286243A CN 202010216611 A CN202010216611 A CN 202010216611A CN 111286243 A CN111286243 A CN 111286243A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
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- 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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention relates to a water-based industrial coating, in particular to a water-based acrylic acid silver paint suitable for mechanical equipment and a preparation method thereof, wherein the water-based acrylic acid silver paint comprises a water-based self-crosslinking acrylic acid emulsion, a water-based polyurethane emulsion, a cosolvent, a conventional auxiliary agent, a film-forming auxiliary agent, an anti-settling agent, an aluminum paste, an anti-flash rust agent, a thickening agent and deionized water; the preparation method has the advantages of simple preparation process, easy operation, low production cost and improvement of working efficiency.
Description
Technical Field
The invention relates to a water-based industrial coating, in particular to a water-based acrylic silver paint suitable for mechanical equipment and a preparation method thereof.
Background
The silver paint is a special pigment added into paint, is used for decorating the surfaces of multipurpose vehicles, oil tanks, metal pipelines and other objects, is commonly used for decorating the surfaces of metals, and has the defects of good silver powder wrapping property, good silver powder arrangement property and high drying speed of the existing oily silver paint, but has the defects of high environmental pollution and great harm to human bodies, and the water-based silver paint has the defects of poor silver powder arrangement, low drying speed and the like. In addition, the water-based silver paint has the defects of poor glossiness, poor adhesive force, easy shedding, low impact strength, poor covering power and difficult storage.
Therefore, there is a need to develop an environment-friendly water-based acrylic silver paint which is harmless to human body, has good silver powder arrangement and good appearance.
Disclosure of Invention
The invention aims at the technical defects, and provides the water-based acrylic silver paint suitable for mechanical equipment and the preparation method thereof.
The invention aims to provide the water-based acrylic silver paint suitable for mechanical equipment, which is prepared by selecting the water-based self-crosslinking acrylic emulsion with better wrapping property and matching with the proper water-based polyurethane emulsion. The water-based acrylic silver paint comprises water-based self-crosslinking acrylic emulsion, water-based polyurethane emulsion, conventional auxiliary agents, cosolvent, film-forming auxiliary agents, anti-settling agents, aluminum paste, anti-flash rust agents, thickening agents and deionized water.
Further, the water-based acrylic silver paint comprises, by mass, 40-70 parts of a water-based self-crosslinking acrylic emulsion, 1-10 parts of a water-based polyurethane emulsion, 1.4-8 parts of a conventional assistant, 1-5 parts of a cosolvent, 1-6 parts of a film-forming assistant, 0.01-0.3 part of an anti-settling agent, 3-10 parts of aluminum silver paste, 0.1-2 parts of an anti-flash rust agent, 0.1-2 parts of a thickener and 10-35 parts of deionized water.
Further, the pH value of the aqueous self-crosslinking acrylic emulsion is 7.0-9.0, and the TG value is 20-40 ℃; the water-based self-crosslinking acrylic emulsion is used as a film forming substance, so that the water-based acrylic silver powder paint can provide a faster film forming speed, and has better water resistance and salt spray resistance.
Further, the pH value of the aqueous polyurethane emulsion is 7.0-9.0, and the solid content is 30%; the waterborne polyurethane emulsion is used as a film forming substance and can provide better toughness, mechanical property, light and color retention; after the waterborne polyurethane emulsion and the waterborne self-crosslinking acrylic emulsion are matched, the physical property and the chemical resistance of a paint film are better, and in addition, the arrangement of silver powder is facilitated.
Further, the conventional auxiliary agents comprise a dispersing agent, a defoaming agent, an amine neutralizing agent, a wetting agent, a leveling agent and a silver powder arrangement auxiliary agent.
Further, the dispersant is one or the combination of more than two of anionic dispersant, cationic dispersant, nonionic dispersant or high-parting dispersant.
Further, the defoaming agent is one or the combination of two of an organic silicon defoaming agent and a silicon-free defoaming agent.
Further, the amine neutralizer is at least one of DMEA or AMP-95.
Further, the wetting agent is at least one of an organic silicon wetting agent or an acetylene glycol wetting agent.
Further, the leveling agent is at least one of an organic silicon leveling agent or an acrylate leveling agent.
Further, the silver powder arrangement auxiliary agent is one or a combination of two of wax emulsion or polyamide wax amine salt.
Further, the film-forming assistant is any one or combination of more of PM propylene glycol methyl ether, BCS ethylene glycol butyl ether, DPNB dipropylene glycol butyl ether, DBG diethylene glycol monobutyl ether, alcohol ester-12, DPM dipropylene glycol methyl ether or ethylene glycol; the film forming auxiliary agent influences the drying speed and the film forming property of a paint film, and the film forming speed can be improved by matching different film forming auxiliary agents while the film forming property is ensured, so that the drying speed is increased.
Further, the anti-settling agent is one or a combination of two of polyurea or polyamide wax, and the silver powder can be uniformly dispersed in the paint liquid by adding the anti-settling agent, so that the defects of settling, water separation and the like are avoided.
Furthermore, the aluminum paste is water-based aluminum paste with the particle size of 10-30 μm, and the silver paste has a better silver powder effect due to the matching of different particle sizes.
Further, the anti-flash rust agent is any one or combination of nitrite, borate or phosphate.
Further, the thickener is any one or the combination of two of association type polyurethane thickener or alkali swelling thickener.
The invention also aims to provide a preparation method of the water-based acrylic silver paint suitable for mechanical equipment, which comprises the following specific steps: the weight portion of the material is as follows: 40-70 parts of water-based acrylic emulsion, 1-10 parts of water-based polyurethane emulsion, 1.4-8 parts of conventional auxiliary agent (the conventional auxiliary agent is 0.5-2.0 parts of dispersant, 0.1-1.0 part of defoamer, 0.1-1.0 part of amine neutralizer, 0.1-1.0 part of wetting agent, 0.1-1.0 part of flatting agent, 0.5-2.0 parts of silver powder arrangement auxiliary agent), 1-5 parts of cosolvent, 1-6 parts of film-forming auxiliary agent, 0.01-0.3 part of anti-settling agent, 3-10 parts of aluminum silver paste, 0.1-2 parts of anti-flash rust agent, 0.1-2 parts of thickening agent and 10-35 parts of deionized water respectively);
the preparation method comprises the following steps: (1) dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800-1000 r/min;
secondly, adding a dispersing agent and a cosolvent into the tank according to the parts by weight, wherein the rotating speed is 800-1000 r/min, and fully dispersing for 10 min;
step three, reducing the dispersion speed to 500-;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800-1000 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 500-.
The invention has the beneficial effects that:
the invention provides a water-based acrylic silver paint suitable for mechanical equipment and a preparation method thereof.
1. The water-based acrylic silver paint adopts the water-based self-crosslinking acrylic emulsion as a film forming substance, can provide a faster film forming speed, and has better water resistance and salt spray resistance; the waterborne polyurethane emulsion can provide better toughness, mechanical property and gloss and color retention as a film forming substance, and after the waterborne polyurethane emulsion and the waterborne self-crosslinking acrylic emulsion are matched, the physical property and chemical resistance of a paint film are better, and in addition, the silver powder arrangement is facilitated.
2. The water-based acrylic silver powder paint has the advantages that the film forming auxiliary agent is adopted to influence the drying speed and the film forming property of a paint film, and the film forming speed can be improved by matching different film forming auxiliary agents while the film forming property is ensured, so that the drying speed is increased.
3. The anti-settling agent adopted in the water-based acrylic silver paint is polyurea or polyamide wax, and the silver powder can be uniformly dispersed in the paint liquid by adding the anti-settling agent, so that the defects of paint liquid settling, water diversion and the like are avoided.
4. The waterborne acrylic silver paint in the application adopts the waterborne aluminum paste with the particle size of 10-30 mu m, and the aluminum paste with different particle sizes can be matched to achieve a better silver powder effect.
5. The water-based acrylic silver paint disclosed by the application adopts the water-based self-crosslinking acrylic emulsion with the pH value of 7.0-9.0, the TG value of 20-40 ℃, the water-based polyurethane emulsion with the pH value of 7.0-9.0 and the solid content of 30%, and the water resistance and the salt fog resistance of the silver paint are improved by matching different film forming substances, meanwhile, the water-based acrylic silver paint provides better toughness, mechanical property and gloss and color retention for the silver paint, further improves the physical property and chemical resistance of a paint film, and has the characteristic of being beneficial to silver powder arrangement.
6. The water-based acrylic silver paint disclosed by the invention has the advantages that different emulsions have different wrapping properties on silver powder, and the emulsion with good wrapping property is beneficial to arrangement of the silver powder. The water-based polyurethane emulsion is matched, so that the gloss and color retention of a paint film are improved, the flexibility is improved, and the impact resistance is improved; different film-forming aids and different use amounts influence the drying speed of a paint film, and the performance of the paint film can be improved by selecting the proper film-forming aid.
7. The preparation method has the advantages of simple preparation process, easy operation, low production cost, easy industrial production and improvement of working efficiency.
The specific implementation mode is as follows:
for better understanding of the present invention, the technical solution of the present invention will be described in detail with specific examples, but the present invention is not limited thereto.
The raw materials used in the invention are all commercial products.
Example 1
60 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 26 ℃ and the pH value of 7.5, 60 parts of aqueous polyurethane emulsion with the solid content of 30% and the pH value of 7.0, 3 parts of cosolvent, 3 parts of film-forming additive, 0.2 part of anti-settling agent, 3 parts of aluminum, 0.5 part of flash rust resistant silver paste agent, 0.2 part of thickening agent and 20 parts of deionized water, and 3.5 parts of conventional additive (the conventional additive is respectively 1 part of dispersing agent, 0.3 part of defoaming agent, 0.3 part of amine neutralizer, 0.2 part of wetting agent, 0.2 part of flatting agent and 1.5 parts of silver powder arrangement additive);
in the technical scheme, the film-forming auxiliary agents are BCS and DPNB in a matching ratio of 2: 1; the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is nitrite; the thickening agent is an associated polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste has the particle sizes of 17 and 11, and the ratio is 2: 1;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 2
60 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 26 ℃ and the pH value of 7.5, 60 parts of aqueous polyurethane emulsion with the solid content of 30% and the pH value of 7.0, 3 parts of cosolvent, 3 parts of film-forming additive, 0.2 part of anti-settling agent, 3 parts of aluminum, 0.5 part of flash rust resistant silver paste agent, 0.2 part of thickening agent and 20 parts of deionized water, and 3.4 parts of conventional additive (the conventional additive is respectively 1 part of dispersing agent, 0.3 part of defoaming agent, 0.2 part of amine neutralizer, 0.2 part of wetting agent, 0.2 part of flatting agent and 1.5 parts of silver powder arrangement additive);
in the technical scheme, the film-forming auxiliary agents are BCS and DPNB in a matching ratio of 2: 1; the anti-settling agent is a polyurea anti-settling agent, and the anti-flash rust agent is nitrite; the thickening agent is an associated polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste is 17-particle aluminum paste;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 3
60 parts of water-based acrylic acid silver powder paint suitable for mechanical equipment, 60 parts of water-based acrylic acid emulsion (selected from commercially available common acrylic acid emulsion) with the TG value of 20 ℃ and the pH value of 7.5, 5 parts of water-based polyurethane emulsion with the solid content of 30% and the pH value of 7.0, 3 parts of cosolvent, 3 parts of film-forming assistant, 0.2 part of anti-settling agent, 3 parts of aluminum silver paste, 0.5 part of anti-flash rust agent, 0.2 part of thickening agent, 20 parts of deionized water and 3.4 parts of conventional assistant (the conventional assistant is respectively 1 part of dispersing agent, 0.3 part of defoaming agent, 0.2 part of wetting agent, 0.2 part of flatting agent, 1.5 parts of silver powder arrangement assistant and 0.2 part of amine neutralizer);
in the technical scheme, the film-forming auxiliary agents are BCS and DPNB in a matching ratio of 2: 1; the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is nitrite; the thickening agent is an associated polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste has the particle sizes of 17 and 11, and the ratio is 2: 1;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 900 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 900r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 600r/min, slowly adding aluminum paste into the tank, and dispersing for 40min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 900 r/min;
secondly, sequentially adding the water-based acrylic emulsion, the water-based polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing to obtain a finished product.
Example 4
60 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 26 ℃ and the pH value of 7.5, 3 parts of cosolvent, 3 parts of film-forming assistant, 0.2 part of anti-settling agent, 3 parts of aluminum paste, 0.5 part of anti-flash rust agent, 0.2 part of thickening agent, 20 parts of deionized water and 3.4 parts of conventional assistant (the conventional assistant is respectively 1 part of dispersing agent, 0.3 part of defoaming agent, 0.2 part of wetting agent, 0.2 part of flatting agent, 1.5 parts of silver powder arrangement assistant and 0.2 part of amine neutralizer);
in the technical scheme, the film-forming auxiliary agents are BCS and DPNB in a matching ratio of 2: 1; the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is nitrite; the thickening agent is an associated polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste has the particle sizes of 17 and 11, and the ratio is 2: 1;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 1000 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 1000r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 600r/min, slowly adding aluminum paste into the tank, and dispersing for 60min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 1000 r/min;
secondly, sequentially adding the water-based self-crosslinking acrylic emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 5
60 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 26 ℃ and the pH value of 7.5, 60 parts of aqueous polyurethane emulsion with the solid content of 30% and the pH value of 7.0, 3 parts of cosolvent, 6 parts of film-forming additive, 0.2 part of anti-settling agent, 3 parts of aluminum, 0.5 part of flash rust resistant silver paste agent, 0.2 part of thickening agent and 20 parts of deionized water, and 3.5 parts of conventional additive (the conventional additive is respectively 1 part of dispersing agent, 0.3 part of defoaming agent, 0.2 part of wetting agent, 0.2 part of flatting agent, 1.5 parts of silver powder arrangement additive and 0.3 part of amine neutralizer);
in the technical scheme, the film-forming additive is alcohol ester-12 and glycol, the matching ratio is 2:1, the anti-settling agent is a polyurea anti-settling agent, the anti-flash rust agent is nitrite, and the thickening agent is an associative polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 6
60 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 26 ℃ and the pH value of 7.5, 60 parts of aqueous polyurethane emulsion with the solid content of 30% and the pH value of 7.0, 3 parts of cosolvent, 3 parts of film-forming additive, 0.01 part of anti-settling agent, 3 parts of aluminum, 0.5 part of flash rust resistant silver paste agent, 0.2 part of thickening agent and 20 parts of deionized water, and 3.5 parts of conventional additive (the conventional additive is respectively 1 part of dispersant, 0.3 part of defoamer, 0.2 part of wetting agent, 0.2 part of flatting agent, 1.5 parts of silver powder arrangement additive and 0.3 part of amine neutralizer);
in the technical scheme, the film-forming auxiliary agent is a composition of DBG diethylene glycol monobutyl ether and alcohol ester-12, wherein the adding ratio of DBG diethylene glycol monobutyl ether to alcohol ester-12 is 1:1, and the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is a composition of nitrite and borate, wherein the addition ratio of the nitrite to the borate is 1: 1; the thickening agent is an associated polyurethane thickening agent; the dispersing agent is a high-parting dispersing agent; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste is 25-particle aluminum paste;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 7
40 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 20 ℃ and the pH value of 7.0, 1 part of aqueous polyurethane emulsion with the solid content of 30 percent and the pH value of 7.0, 1.4 parts of conventional additives (the conventional additives are 0.5 part of dispersing agent, 0.1 part of defoaming agent, 0.1 part of amine neutralizer, 0.1 part of wetting agent, 0.1 part of flatting agent, 0.5 part of silver powder arrangement additive), 1 part of cosolvent, 1 part of film-forming additive, 0.01 part of anti-settling agent, 3 parts of aluminum silver paste, 0.1 part of anti-flash rust agent, 0.1 part of thickening agent and 10 parts of deionized water respectively;
in the technical scheme, the film-forming auxiliary agent is a composition of PM propylene glycol methyl ether and BCS ethylene glycol butyl ether, wherein the adding ratio of the PM propylene glycol methyl ether to the BCS ethylene glycol butyl ether is 1: 1; the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is nitrite; the thickening agent is an associated polyurethane thickening agent; the dispersant is anionic; the defoaming agent is an organic silicon defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste has the particle sizes of 17 and 11, and the ratio is 2: 1;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
Example 8
70 parts of aqueous self-crosslinking acrylic emulsion with the TG value of 40 ℃ and the pH value of 9.0, 10 parts of aqueous polyurethane emulsion with the solid content of 30% and the pH value of 9.0, 8 parts of conventional additives (the conventional additives are respectively 2.0 parts of dispersing agent, 1.0 part of defoaming agent, 1.0 part of amine neutralizer, 1.0 part of wetting agent, 1.0 part of flatting agent and 2.0 parts of silver powder arrangement additive), 5 parts of cosolvent, 6 parts of film-forming additive, 0.3 part of anti-settling agent, 10 parts of aluminum silver paste, 2 parts of anti-flash rust agent, 2 parts of thickening agent and 35 parts of deionized water;
in the technical scheme, the film-forming auxiliary agents are BCS and DPNB in a matching ratio of 2: 1; the anti-settling agent is a polyurea anti-settling agent; the flash rust inhibitor is nitrite; the thickening agent is association type polyurethane thickening agent and alkali swelling thickening agent, and the matching ratio is 5: 1; the dispersant is anionic; the defoaming agent is a silicon-free defoaming agent; the amine neutralizer is DMEA; the wetting agent is an organic silicon wetting agent; the leveling agent is an organic silicon leveling agent; the silver powder arrangement auxiliary agent is wax emulsion; the aluminum paste has the particle sizes of 17 and 11, and the ratio is 2: 1;
preparation method of water-based acrylic silver paint suitable for mechanical equipment
(1) Dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, adding a dispersing agent and a cosolvent into a tank according to the parts by weight, wherein the rotating speed is 800r/min, and fully dispersing for 10 min;
reducing the dispersion speed to 500r/min, slowly adding aluminum paste into the tank, and dispersing for 30min to obtain aluminum paste diluent for later use;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 600r/min, slowly adding the aluminum paste diluent in the step (2) into a tank according to parts by weight, uniformly stirring, adding a thickening agent, and fully dispersing for 30min to obtain a finished product.
The products of examples 1 to 8 were subjected to a product performance index test:
as can be seen from the above table 1, in the examples 2-8, compared with the example 1, the prepared finished paint has good storage stability, the glossiness of 67, the surface drying speed of 67, the hardness of 67, the impact resistance and the silver powder arrangement property by selecting the waterborne self-crosslinking acrylic emulsion with good wrapping property and matching with the proper waterborne polyurethane emulsion.
The raw materials listed in the invention, the values of the upper limit and the lower limit and the interval of the raw materials, and the values of the upper limit and the lower limit and the interval of the process parameters can all realize the invention, and the examples are not listed.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. The water-based acrylic acid silver paint suitable for mechanical equipment is characterized by comprising a water-based self-crosslinking acrylic acid emulsion, a water-based polyurethane emulsion, a cosolvent, a conventional auxiliary agent, a film-forming auxiliary agent, an anti-settling agent, aluminum silver paste, an anti-flash rust agent, a thickening agent and deionized water.
2. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the water-based acrylic silver paint comprises, by mass, 40-70 parts of water-based self-crosslinking acrylic emulsion, 1-10 parts of water-based polyurethane emulsion, 1-7 parts of conventional auxiliary agent, 1-5 parts of cosolvent, 1-6 parts of film-forming auxiliary agent, 0.01-0.3 part of anti-settling agent, 3-10 parts of aluminum paste, 0.1-2 parts of anti-flash rust agent, 0.1-2 parts of thickening agent and 10-35 parts of deionized water.
3. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the pH value of the water-based self-crosslinking acrylic emulsion is 7.0-9.0, and the TG value is 20-40 ℃;
the pH value of the aqueous polyurethane emulsion is 7.0-9.0, and the solid content is 30%.
4. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the conventional auxiliary agents comprise a dispersing agent, a defoaming agent, an amine neutralizing agent, a wetting agent, a flatting agent and a silver powder arrangement auxiliary agent.
5. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the film-forming assistant is any one or combination of PM propylene glycol methyl ether, BCS ethylene glycol butyl ether, DPNB dipropylene glycol butyl ether, DBG diethylene glycol monobutyl ether, alcohol ester-12, DPM dipropylene glycol methyl ether or ethylene glycol.
6. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the anti-settling agent is one or the combination of two of polyurea or polyamide wax.
7. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the aluminum paste is water-based aluminum paste with the particle size of 10-30 mu m.
8. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the anti-flash rust agent is any one or combination of nitrite, borate or phosphate.
9. The water-based acrylic silver paint for mechanical equipment according to claim 1, wherein: the thickener is one or two of associative polyurethane thickener or alkali swelling thickener.
10. The preparation method of the water-based acrylic silver paint suitable for mechanical equipment according to claim 1, characterized in that: the method comprises the following specific steps of: 40-70 parts of water-based acrylic emulsion, 1-10 parts of water-based polyurethane emulsion, 1.4-8 parts of conventional auxiliary agent (the conventional auxiliary agent is 0.5-2.0 parts of dispersant, 0.1-1.0 part of defoamer, 0.1-1.0 part of amine neutralizer, 0.1-1.0 part of wetting agent, 0.1-1.0 part of flatting agent, 0.5-2.0 parts of silver powder arrangement auxiliary agent), 1-5 parts of cosolvent, 1-6 parts of film-forming auxiliary agent, 0.01-0.3 part of anti-settling agent, 3-10 parts of aluminum silver paste, 0.1-2 parts of anti-flash rust agent, 0.1-2 parts of thickening agent and 10-35 parts of deionized water respectively);
the preparation method comprises the following steps: (1) dividing the deionized water into two parts, wherein one part is 1/3 parts of deionized water, and the other part is 2/3 parts of deionized water;
(2) preparation method of aluminum paste diluent
Firstly, 1/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800-1000 r/min;
secondly, adding a dispersing agent and a cosolvent into the tank according to the parts by weight, wherein the rotating speed is 800-1000 r/min, and fully dispersing for 10 min;
step three, reducing the dispersion speed to 500-;
(3) preparation method of silver paint
Firstly, 2/3 parts of deionized water are added into a tank according to the parts by weight, and the rotating speed is 800-1000 r/min;
secondly, sequentially adding the aqueous self-crosslinking acrylic emulsion, the aqueous polyurethane emulsion, the amine neutralizer, the silver powder arrangement auxiliary agent, the wetting agent, the defoaming agent, the film-forming auxiliary agent, the anti-settling agent, the leveling agent and the anti-flash rust agent into a tank according to the parts by weight, and fully dispersing for 20 min;
and step three, reducing the rotating speed to 500-.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921162A (en) * | 2021-07-20 | 2022-08-19 | 上海澳昌实业有限公司 | Water-based transparent wear-resistant flame-retardant finish paint and preparation method thereof |
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| CN102876167A (en) * | 2012-10-08 | 2013-01-16 | 浙江圣力邦漆业有限公司 | Aqueous silvery aluminum powder flashing paint |
| CN103788787A (en) * | 2013-10-21 | 2014-05-14 | 广州擎天材料科技有限公司 | Single-component water-based natural drying finishing coat for construction crane and preparation method thereof |
| CN106833206A (en) * | 2017-02-28 | 2017-06-13 | 江世妹 | A kind of special water paint of appliance shell |
| CN110791158A (en) * | 2019-11-08 | 2020-02-14 | 河北晨阳工贸集团有限公司 | Water-based quick-drying silver paint and preparation method thereof |
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2020
- 2020-03-24 CN CN202010216611.5A patent/CN111286243A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876167A (en) * | 2012-10-08 | 2013-01-16 | 浙江圣力邦漆业有限公司 | Aqueous silvery aluminum powder flashing paint |
| CN103788787A (en) * | 2013-10-21 | 2014-05-14 | 广州擎天材料科技有限公司 | Single-component water-based natural drying finishing coat for construction crane and preparation method thereof |
| CN106833206A (en) * | 2017-02-28 | 2017-06-13 | 江世妹 | A kind of special water paint of appliance shell |
| CN110791158A (en) * | 2019-11-08 | 2020-02-14 | 河北晨阳工贸集团有限公司 | Water-based quick-drying silver paint and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114921162A (en) * | 2021-07-20 | 2022-08-19 | 上海澳昌实业有限公司 | Water-based transparent wear-resistant flame-retardant finish paint and preparation method thereof |
| CN114921162B (en) * | 2021-07-20 | 2023-08-01 | 上海澳昌实业有限公司 | Water-based transparent wear-resistant flame-retardant finish paint and preparation method thereof |
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