CN113502120A - Polyurethane colored finish paint and preparation method thereof - Google Patents
Polyurethane colored finish paint and preparation method thereof Download PDFInfo
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- CN113502120A CN113502120A CN202110878685.XA CN202110878685A CN113502120A CN 113502120 A CN113502120 A CN 113502120A CN 202110878685 A CN202110878685 A CN 202110878685A CN 113502120 A CN113502120 A CN 113502120A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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- 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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- 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention discloses a polyurethane colored finish paint and a preparation method thereof, wherein the finish paint comprises aqueous polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent, a diatomite dispersion liquid, colored nano resin powder and a curing agent, and the colored nano resin powder comprises aqueous polyurethane resin, a hydroxy acrylic acid dispersion, acrylic resin, polyamide, a wetting agent, a defoaming agent, a pigment, potassium hydroxide, a curing agent and calcium chloride. The paint has the characteristics of reasonable formula proportion, colorful and bright color, good glossiness, high hardness, wear resistance, water resistance, chemical resistance, high adhesive force and the like, is nontoxic, pollution-free, safe, environment-friendly, long in service life, convenient to construct, simple in production process and suitable for large-scale production.
Description
Technical Field
The invention relates to the technical field of floor paint, in particular to polyurethane colored finish paint and a preparation method thereof.
Background
The floor paint has the advantages of no seam, solid texture, corrosion resistance, water resistance, dust prevention, convenient maintenance, low maintenance cost and the like, so the floor paint is widely applied to the floors of workshops and parking lots of product factories requiring high cleanness, attractiveness, dust prevention and sterility in the electronic industry, medicines, electric appliances, electronics, machinery, chemical engineering, textiles, clothing, furniture, plastics, stationery and the like.
At present, the types of floor paints are mainly classified into polyurethane resin floor paints, acrylic floor paints and polyurethane floor paints. However, the existing polyurethane floor paint has the following defects: 1. in order to add color, pigment or colored paint is generally added, but the pigment or colored paint only plays a role of adding color, and has no influence or gain on performances such as crosslinking density, hardness, wear resistance and the like of the colored paint, for example, Chinese patent application No. 201610414268.9 named as 'a polyurethane colored floor paint'. 2. The hardness, wear resistance, water resistance, chemical resistance and adhesion of the finish are still to be enhanced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a polyurethane colored finish paint and a preparation method thereof.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the polyurethane colored finish paint comprises the following raw materials in parts by weight:
80-150 parts of waterborne polyurethane resin; 20-50 parts of amino resin; 10-15 parts of carbon nanofiber powder; 10-20 parts of nano montmorillonite; 15-20 parts of quartz powder; 1-3 parts of a defoaming agent; 1-2 parts of a leveling agent; 2-5 parts of a dispersing agent; 1-5 parts of an anti-settling agent; 2-8 parts of a diatomite dispersion liquid; 20-40 parts of color nano resin powder; 80-100 parts of a curing agent;
wherein the color nano resin powder is prepared from 10-12 parts of waterborne polyurethane resin; 2-5 parts of a hydroxyl acrylic acid dispersion; 6-8 parts of a curing agent; 1-5 parts of acrylic resin; 1-5 parts of polyamide; 1-2 parts of potassium hydroxide; 0.1-0.5 part of wetting agent; 0.1-0.3 part of defoaming agent; 0.5-2 parts of pigment and 1-2 parts of calcium chloride are mixed and gelatinized, and then granulation and grinding are carried out to obtain nano-powder.
Preferably, the particle size of the quartz powder is 100 to 120 meshes, and the particle size of the nano montmorillonite is 150 to 200 meshes.
Preferably, the defoaming agent is phenethyl alcohol oleate, polydimethylsiloxane, polyoxyethylene polyoxypropylene amine ether or polyoxyethylene polyoxypropylene pentaerythritol ether.
Preferably, the leveling agent is polyether modified polysiloxane.
Preferably, the dispersant is a polyacrylate dispersant, a polyoxyethylene ether dispersant or a silicate dispersant.
Preferably, the anti-settling agent is polyamide wax, modified polyurea N-methyl pyrrolidone or amide modified castor oil.
Preferably, the curing agent is an epoxy curing agent, a polyamide curing agent or a water-based amine curing agent.
Preferably, the wetting agent is a polyoxyethylene alkyl ether.
Preferably, the hydroxyl acrylic dispersion is an aqueous hydroxyl acrylic dispersion modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 1000-2500.
A preparation method of a polyurethane colored finish paint comprises the following steps:
(1) preparing color nano resin powder: firstly putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 1000-2000 rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 10-20 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotating speed of 500-600 rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish.
Compared with the prior art, the invention has the beneficial effects that:
1. the paint has the characteristics of reasonable formula proportion, colorful and bright color, good glossiness, high hardness, wear resistance, water resistance, chemical resistance, high adhesive force and the like, is nontoxic, pollution-free, safe, environment-friendly, long in service life, convenient to construct, simple in production process and suitable for large-scale production.
2. The color nano resin powder and the finish paint of the invention both adopt the same resin base material (namely polyurethane resin), the crosslinking density is higher after the curing reaction, the compatibility is better, and the color nano resin powder can increase the hardness of the finish paint and enrich the color of the finish paint. In addition, the hydroxyl acrylic acid dispersoid in the colored nano resin powder has higher hardness and impact resistance after being crosslinked with polyurethane resin, and has good adhesive force.
3. The invention adopts the combination of the waterborne polyurethane resin and the amino resin, can obviously improve the adhesive force of the finish paint, and the waterborne polyurethane resin and the amino resin can be quickly cured by the curing agent, so that the toughness of the coating is improved.
4. The carbon nanofiber powder disclosed by the invention has a pore structure, so that the finish paint has good heat insulation performance, meanwhile, the carbon nanofiber powder has high strength, the wear resistance of the finish paint can be enhanced, and the carbon nanofiber powder is corrosion-resistant and can enhance the corrosion resistance of the finish paint.
5. The nano montmorillonite can be used as a filler of the finish paint to increase the hardness, and can also be coated on the surfaces of the carbon nanofiber powder and the color nano resin powder to further enhance the heating performance of the carbon nanofiber powder and the color nano resin powder, improve the weather resistance, heat resistance and flame retardance, and enhance the water resistance and ultraviolet resistance of the nano montmorillonite. The nano montmorillonite, the carbon nanofiber powder and the color nano resin powder are combined, so that the wear resistance and the density of a finish paint film can be greatly improved.
6. The diatomite dispersion liquid has the characteristics of large porosity, strong absorptivity, stable chemical property, less impurities, wear resistance, heat resistance and the like, can provide excellent surface performance for finish paint, and can increase the volume, thicken and improve the adhesive force, so that the paint film is shortened in drying time.
7. The dispersing agent and the anti-settling agent can ensure that the carbon nanofiber powder, the nano montmorillonite, the quartz powder and the color nano resin powder can be uniformly dispersed in the polyurethane resin without precipitation.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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 embodiment 1 of the invention provides a polyurethane colored finish paint, which comprises the following raw materials in parts by mass:
80 parts of waterborne polyurethane resin; 20 parts of amino resin; 10 parts of carbon nanofiber powder; 10 parts of nano montmorillonite; 15 parts of quartz powder; 1 part of a defoaming agent; 2 parts of a leveling agent; 2 parts of a dispersing agent; 1 part of anti-settling agent; 2 parts of a diatomite dispersion liquid; 22.7 parts of color nano resin powder; 80 parts of a curing agent;
wherein the color nano resin powder is prepared from 10 parts of waterborne polyurethane resin; 2 parts of a hydroxy acrylic acid dispersion; 6 parts of a curing agent; 1 part of acrylic resin; 1 part of polyamide; 1 part of potassium hydroxide; 0.1 part of wetting agent; 0.1 part of defoaming agent; 0.5 part of pigment and 1 part of calcium chloride are mixed and gelatinized, and then granulation and grinding are carried out to obtain nano-powder.
The particle size of the quartz powder is 100 meshes, and the particle size of the nano montmorillonite is 150 meshes.
The defoaming agent is phenethyl alcohol oleate. The leveling agent is polyether modified polysiloxane. The dispersant is polyacrylate dispersant. The anti-settling agent is polyamide wax. The curing agent is an epoxy curing agent. The ultraviolet absorbent is benzotriazole. The wetting agent is polyoxyethylene alkyl ether.
The hydroxyl acrylic acid dispersoid is an aqueous hydroxyl acrylic acid dispersoid modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 1000.
The preparation method of the polyurethane colored finish paint comprises the following steps:
(1) preparing color nano resin powder: firstly, putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 1000rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 10 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotating speed of 500rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish paint.
Example 2
The embodiment 2 of the invention provides a polyurethane colored finish paint, which comprises the following raw materials in parts by mass:
100 parts of waterborne polyurethane resin; 30 parts of amino resin; 13 parts of carbon nanofiber powder; 15 parts of nano montmorillonite; 18 parts of quartz powder; 2 parts of a defoaming agent; 1.5 parts of a leveling agent; 4 parts of a dispersing agent; 3 parts of an anti-settling agent; 6 parts of a diatomite dispersion liquid; 31.5 parts of colored nano resin powder; 100 parts of a curing agent;
wherein the color nano resin powder is prepared from 11 parts of waterborne polyurethane resin; 3 parts of a hydroxy acrylic acid dispersion; 7 parts of a curing agent; 3 parts of acrylic resin; 3 parts of polyamide; 1.5 parts of potassium hydroxide; 0.3 part of wetting agent; 0.2 part of defoaming agent; pigment 1 part and calcium chloride 1.5 parts are mixed and gelatinized, granulated and ground into a nano-powder.
The particle size of the quartz powder is 110 meshes, and the particle size of the nano montmorillonite is 180 meshes.
The defoaming agent is polydimethylsiloxane. The leveling agent is polyether modified polysiloxane. The dispersant is a silicate dispersant. The anti-settling agent is polyamide wax. The curing agent is an epoxy curing agent. The ultraviolet absorbent is benzotriazole. The wetting agent is polyoxyethylene alkyl ether. The hydroxyl acrylic acid dispersoid is an aqueous hydroxyl acrylic acid dispersoid modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 2000.
The preparation method of the polyurethane colored finish paint comprises the following steps:
(1) preparing color nano resin powder: firstly, putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 1500rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 15 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotation speed of 550rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish paint.
Example 3
The embodiment 3 of the invention provides a polyurethane colored finish paint, which comprises the following raw materials in parts by mass:
120 parts of waterborne polyurethane resin; 40 parts of amino resin; 14 parts of carbon nanofiber powder; 18 parts of nano montmorillonite; 18 parts of quartz powder; 2.5 parts of a defoaming agent; 1.8 parts of a leveling agent; 4 parts of a dispersing agent; 4 parts of an anti-settling agent; 7 parts of a diatomite dispersion liquid; 40 parts of color nano resin powder; 90 parts of a curing agent;
wherein the color nano resin powder is prepared from 10 parts of waterborne polyurethane resin; 5 parts of a hydroxy acrylic acid dispersion; 8 parts of a curing agent; 5 parts of acrylic resin; 5 parts of polyamide; 2 parts of potassium hydroxide; 0.5 part of wetting agent; 0.3 part of defoaming agent; 2 parts of pigment and 2 parts of calcium chloride are mixed and gelatinized, and then granulation and grinding are carried out to obtain nano-powder.
The particle size of the quartz powder is 120 meshes, and the particle size of the nano montmorillonite is 200 meshes.
The defoaming agent is polyoxyethylene polyoxypropylene ether. The leveling agent is polyether modified polysiloxane. The dispersant is a silicate dispersant. The anti-settling agent is amide modified castor oil. The curing agent is a water-based amine curing agent. The ultraviolet absorbent is benzotriazole. The wetting agent is polyoxyethylene alkyl ether.
The hydroxyl acrylic acid dispersoid is an aqueous hydroxyl acrylic acid dispersoid modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 2500.
The preparation method of the polyurethane colored finish paint comprises the following steps:
(1) preparing color nano resin powder: firstly putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 2000rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 20 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotating speed of 600rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish paint.
Example 4
The embodiment 4 of the invention provides a polyurethane colored finish paint, which comprises the following raw materials in parts by mass:
150 parts of waterborne polyurethane resin; 50 parts of amino resin; 15 parts of carbon nanofiber powder; 20 parts of nano montmorillonite; 20 parts of quartz powder; 3 parts of a defoaming agent; 2 parts of a leveling agent; 5 parts of a dispersing agent; 5 parts of an anti-settling agent; 8 parts of a diatomite dispersion liquid; 40 parts of color nano resin powder; 100 parts of a curing agent;
wherein the color nano resin powder is prepared from 12 parts of waterborne polyurethane resin; 5 parts of a hydroxy acrylic acid dispersion; 8 parts of a curing agent; 5 parts of acrylic resin; 5 parts of polyamide; 2 parts of potassium hydroxide; 0.5 part of wetting agent; 0.3 part of defoaming agent; 2 parts of pigment and 2 parts of calcium chloride are mixed and gelatinized, and then granulation and grinding are carried out to obtain nano-powder.
The particle size of the quartz powder is 120 meshes, and the particle size of the nano montmorillonite is 200 meshes.
The defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether. The leveling agent is polyether modified polysiloxane. The dispersant is polyacrylate dispersant. The anti-settling agent is polyamide wax. The curing agent is an epoxy curing agent. The ultraviolet absorbent is benzotriazole. The wetting agent is polyoxyethylene alkyl ether.
The hydroxyl acrylic acid dispersoid is an aqueous hydroxyl acrylic acid dispersoid modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 2200.
The preparation method of the polyurethane colored finish paint comprises the following steps:
(1) preparing color nano resin powder: firstly, putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 1500rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 12 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotating speed of 500rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish paint.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The polyurethane colored finish paint is characterized by comprising the following raw materials in parts by mass:
80-150 parts of waterborne polyurethane resin; 20-50 parts of amino resin; 10-15 parts of carbon nanofiber powder; 10-20 parts of nano montmorillonite; 15-20 parts of quartz powder; 1-3 parts of a defoaming agent; 1-2 parts of a leveling agent; 2-5 parts of a dispersing agent; 1-5 parts of an anti-settling agent; 2-8 parts of a diatomite dispersion liquid; 20-40 parts of color nano resin powder; 80-100 parts of a curing agent;
wherein the color nano resin powder is prepared from 10-12 parts of waterborne polyurethane resin; 2-5 parts of a hydroxyl acrylic acid dispersion; 6-8 parts of a curing agent; 1-5 parts of acrylic resin; 1-5 parts of polyamide; 1-2 parts of potassium hydroxide; 0.1-0.5 part of wetting agent; 0.1-0.3 part of defoaming agent; 0.5-2 parts of pigment and 1-2 parts of calcium chloride are mixed and gelatinized, and then granulation and grinding are carried out to obtain nano-powder.
2. The polyurethane colored topcoat paint as claimed in claim 1, wherein the quartz powder has a particle size of 100-120 mesh, and the nano-montmorillonite has a particle size of 150-200 mesh.
3. The polyurethane colored topcoat of claim 1, wherein the defoamer is a phenethyl alcohol oleate, polydimethylsiloxane, polyoxyethylene polyoxypropylene amine ether or polyoxyethylene polyoxypropylene pentaerythritol ether.
4. The polyurethane colored topcoat according to claim 1, wherein the leveling agent is a polyether-modified polysiloxane.
5. The polyurethane colored topcoat of claim 1, wherein the dispersant is a polyacrylate dispersant, a polyoxyethylene ether dispersant, or a silicate dispersant.
6. The polyurethane colored topcoat of claim 1, wherein the anti-settling agent is a polyamide wax, a modified polyurea N-methylpyrrolidone, or an amide modified castor oil.
7. The polyurethane colored topcoat of claim 1, wherein the curing agent is an epoxy curing agent, a polyamide curing agent, or an aqueous amine curing agent.
8. The polyurethane color topcoat of claim 1, wherein the wetting agent is a polyoxyethylene alkyl ether.
9. The polyurethane colored topcoat paint of claim 1, wherein the hydroxyl acrylic dispersion is an aqueous hydroxyl acrylic dispersion modified by polycaprolactone polyol, and the number average molecular weight of the polycaprolactone polyol is Mn 1000-2500.
10. A method for preparing a polyurethane colored topcoat paint according to any one of claims 1 to 9, characterized by comprising the steps of:
(1) preparing color nano resin powder: firstly putting the waterborne polyurethane resin, the hydroxyl acrylic acid dispersoid, the acrylic resin, the polyamide, the wetting agent, the defoaming agent and the pigment into a stirring disperser for high-speed dispersion at the rotating speed of 1000-2000 rpm, then sequentially adding the potassium hydroxide and the curing agent, uniformly stirring, then adding the calcium chloride, granulating after forming a high-elasticity gel, and grinding into powder of 10-20 nanometers;
(2) preparing finish paint: proportionally placing waterborne polyurethane resin, amino resin, carbon nanofiber powder, nano montmorillonite, quartz powder, a defoaming agent, a leveling agent, a dispersing agent, an anti-settling agent and a diatomite dispersion liquid into a stirring dispersion machine for low-speed dispersion at the rotating speed of 500-600 rpm, then adding color nano resin powder, uniformly stirring, and finally adding a curing agent to obtain the polyurethane colored finish.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115558379A (en) * | 2022-10-31 | 2023-01-03 | 广东宝伯力新材料科技有限公司 | Preparation method of carbon steel polyurethane terrace |
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| US20100210745A1 (en) * | 2002-09-09 | 2010-08-19 | Reactive Surfaces, Ltd. | Molecular Healing of Polymeric Materials, Coatings, Plastics, Elastomers, Composites, Laminates, Adhesives, and Sealants by Active Enzymes |
| JP2013067787A (en) * | 2011-09-09 | 2013-04-18 | Nisshin Chem Ind Co Ltd | Coating composition and laminate |
| CN103092016A (en) * | 2011-11-02 | 2013-05-08 | 佳能株式会社 | Colored resin powder and toner using the colored resin powder |
| CN104559718A (en) * | 2014-12-24 | 2015-04-29 | 上海三恩化工有限公司 | Water-based automobile finish as well as preparation and usage methods thereof |
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| CN111484789A (en) * | 2020-04-24 | 2020-08-04 | 东莞市益典实业有限公司 | Epoxy resin self-flowing floating colored sand wood-colored floor paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115558379A (en) * | 2022-10-31 | 2023-01-03 | 广东宝伯力新材料科技有限公司 | Preparation method of carbon steel polyurethane terrace |
| CN115558379B (en) * | 2022-10-31 | 2023-09-15 | 广东宝伯力新材料科技有限公司 | Preparation method of carbon steel polyurethane terrace |
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