CN108441069B - Mirror back anticorrosive coating modified based on graphene, graphene oxide and nano filler - Google Patents

Mirror back anticorrosive coating modified based on graphene, graphene oxide and nano filler Download PDF

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CN108441069B
CN108441069B CN201810204344.2A CN201810204344A CN108441069B CN 108441069 B CN108441069 B CN 108441069B CN 201810204344 A CN201810204344 A CN 201810204344A CN 108441069 B CN108441069 B CN 108441069B
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graphene
graphene oxide
epoxy resin
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CN108441069A (en
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朱庭光
张华贵
孟令昌
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Xiamen Chiefsun Coating Co ltd
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Xiamen Chiefsun Coating Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/65Additives macromolecular
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/221Oxides; Hydroxides of metals of rare earth metal
    • C08K2003/2213Oxides; Hydroxides of metals of rare earth metal of cerium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates
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Abstract

An eyeglass back anticorrosive coating based on graphene, graphene oxide and nano filler modification relates to an eyeglass back anticorrosive coating. Graphene, graphene oxide, zinc oxide, cerium dioxide, nano-filler, pigment, a dispersing agent, a leveling agent, a mixed solvent, a curing agent, an accelerant and the like are dispersed in epoxy resin (epoxy equivalent is 80-2000) through a special process, so that a layer of graphene and graphene oxide layer is formed in a coating, and a nano-silver layer is protected by using a micro-battery principle; the nano filler is utilized to change the better release of the internal stress caused by the curing process of the epoxy resin, and simultaneously, the toughness of the coating is improved, so that the coating is more compact, and particularly, the compactness caused by the damage of the epoxy coating caused by the grinding process of a silver mirror subsequent processing machine cannot play a better protection role.

Description

Mirror back anticorrosive coating modified based on graphene, graphene oxide and nano filler
Technical Field
The invention relates to a mirror back anticorrosive paint, in particular to a mirror back anticorrosive paint modified based on graphene, graphene oxide and nano filler.
Background
The epoxy resin has the characteristics of strong corrosion resistance, high hardness, high strength, quick curing, excellent adhesive force to various base materials and the like, and is popular with the fields of ships, spaceflight and civilian use at home and abroad. In the manufacturing process of the silver mirror, a silver nano layer is plated, the activity of the nano silver layer is very high, the protection of the plating layer by using the traditional alkyd paint or the single epoxy paint still has great defects, particularly, sulfides in the air and the like have very obvious damage to the silver layer, and the service life of the pure silver mirror is seriously influenced.
Epoxy resin and a curing agent matched with the epoxy resin have excellent chemical resistance and outstanding physical properties, numerous related researches are carried out at home and abroad based on the epoxy resin, direct dispersion of epoxy and pigment and filler is utilized on back coating of silver mirrors (Yangchun and the like, Chinese patent application number: 201010601525.2), and better corrosion resistance is not facilitated due to poor chemical resistance of the filler and the like.
Graphene has a unique two-dimensional structure and outstanding physicochemical properties, in particular it has good electrical conductivity and excellent chemical resistance. However, due to the low surface activity of graphene, the direct application of graphene in epoxy resin (Yishong et al, China patent application No. 201310413596.3) can affect its dispersibility in epoxy resin. The physical and chemical properties of the graphene oxide are utilized, the graphene is mixed for use, and the graphene is dispersed by utilizing a special dispersing agent and a special process.
Disclosure of Invention
The invention aims to provide a mirror back anticorrosive paint modified based on graphene, graphene oxide and nano filler.
The invention comprises the following components in percentage by mass:
epoxy resin: 10 to 50;
graphene: 0.05 to 2;
and (3) graphene oxide: 0.05 to 2;
zinc oxide: 0.5 to 20;
cerium oxide: 0.5 to 20;
nano-filler: 1-30;
filling: 20-70 parts of;
pigment: 3-30;
dispersing agent: 1-10;
leveling agent: 0.005 to 1;
mixing solvent: 10 to 50;
curing agent: 2-10;
accelerator (b): 1 to 10.
The epoxy resin may have an epoxy equivalent of 80 to 2000.
The nano filler can be selected from one of nano barium sulfate, nano calcium carbonate and the like.
The filler may be selected from one of barium sulfate, calcium carbonate, talc, and the like.
The pigment may be selected from one of an epoxy resin milled iron oxide yellow dispersion, an epoxy resin milled carbon black dispersion, titanium dioxide, an epoxy resin milled phthalocyanine blue dispersion, and the like.
The dispersant may be one selected from polyvinylpyrrolidone, phosphate type dispersants, polyamide type dispersants, anionic type dispersants, and the like.
The leveling agent can be selected from one of polyether modified silicon organic silicon, polyester modified silicon organic silicon, modified acrylic acid leveling agent and the like.
The mixed solvent can be at least two selected from ethanol, xylene, n-butanol, monobutyl ether, propylene glycol methyl ether acetate, diacetone alcohol, mixed dibasic acid ester, cyclohexanone and the like.
The curing agent may be one selected from dicyandiamide, acid anhydride, organic acid, polyamide, and the like.
The promoter can be one selected from imidazole, dimethyl imidazole, diphenyl imidazole, salicylic acid, etc.
The preparation method of the invention comprises the following steps:
1) adding a dispersing agent into a mixed solvent A, then adding graphene and graphene oxide, and performing ultrasonic dispersion to obtain a graphene and graphene oxide dispersion solution, wherein the mixed solvent A is selected from at least two of mixed solvents;
2) dissolving epoxy resin in a mixed solvent B, adding a dispersing agent, a nano filler, a filler, titanium dioxide, zinc oxide and cerium dioxide, adding the graphene and graphene oxide dispersion liquid obtained in the step 1), grinding, adding an iron oxide yellow dispersion liquid based on epoxy resin grinding, a carbon black dispersion liquid based on epoxy resin grinding and a phthalocyanine blue dispersion liquid based on epoxy resin grinding to adjust the color, and adding a leveling agent to obtain a main agent of the mirror back anticorrosive paint modified by the graphene, the graphene oxide and the nano filler; the mixed solvent B is selected from at least two of the mixed solvents;
in the step 2), the grinding can be carried out by a horizontal sand mill, the grinding requirement can be that the fineness is less than or equal to 15 mu, and the viscosity is controlled to be 300-1000 Pa.s (cP).
3) Dissolving a curing agent and an accelerator in the mixed solvent C to obtain the curing agent of the mirror back anticorrosive paint modified based on graphene, graphene oxide and nano filler; the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler is composed of a main agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler obtained in the step 2) and a curing agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler; the mixed solvent C is selected from at least two of the mixed solvents.
The method comprises the steps of dispersing graphene, graphene oxide, zinc oxide, cerium dioxide, nano-filler, pigment, a dispersing agent, a flatting agent, a mixed solvent, a curing agent, an accelerant and the like in epoxy resin (epoxy equivalent is 80-2000) through a special process, so that a layer of graphene and graphene oxide layer is formed in a coating, and a nano-silver layer is protected by using a micro-battery principle; the nano filler is utilized to change the better release of the internal stress caused by the curing process of the epoxy resin, and simultaneously, the toughness of the coating is improved, so that the coating is more compact, and particularly, the compactness caused by the damage of the epoxy coating caused by the grinding process of a silver mirror subsequent processing machine cannot play a better protection role.
The invention has the following advantages:
(1) improve the adhesion and compactness between the coating and the silver layer and improve the protection of the coating.
(2) The coating has high hardness and excellent scratch resistance.
(3) The coating has excellent abrasive cutting performance after being cured.
(4) The coating is excellent in acid resistance, alkali resistance and salt spray resistance.
(5) The coating has good storage stability, and can be suitable for different implementation processes (spray coating, roller coating and the like) through the adjustment of the formula.
Detailed Description
The following examples further illustrate the invention.
Example 1
A mixed solvent A: 80 parts of n-butyl alcohol and 20 parts of monobutyl ether.
And (3) mixing a solvent B: 20 parts of xylene and 80 parts of propylene glycol methyl ether acetate.
Mixing a dispersing agent: two of the dispersants: 6 parts of phosphate type dispersant and 4 parts of anionic dispersant.
Mixing graphene oxide prepared by a Hummers method and graphene prepared by a mechanical stripping method, wherein the mixing mass fraction is 2: 1, adding 1 part of polyvinylpyrrolidone into 56 parts of mixed solvent, and then adding 3 parts of mixed graphene. Meanwhile, ultrasonic dispersion is utilized, and the mass percentage concentration of the mixed graphene in the solution is controlled to be 5%.
30 parts of epoxy resin was dissolved in 20 parts of the mixed solvent B, the mass of the solvent being 66.7% of the resin. Adding 2 parts of the mixed graphene solution into 50 parts of epoxy resin solution, sequentially adding 2 parts of mixed dispersing agent, 1 part of zinc oxide, 1 part of cerium dioxide, 2 parts of nano barium sulfate, 17 parts of titanium dioxide, 2 parts of talcum powder and 30 parts of barium sulfate, uniformly stirring, placing into a 50 ℃ oven for standing for 12 hours, adding 2 parts of dicyandiamide, uniformly stirring, grinding in a horizontal sand mill to 5 mu of fineness, and preparing the mixed graphene-nano material-epoxy resin solution. Adding a pigment to adjust the color to the required color, and then adding 0.005 part of polyester modified organic silicon flatting agent to obtain the main agent of the mirror back anticorrosive paint modified by graphene, graphene oxide and nano filler.
15 parts of polyamide and 15 parts of dimethylimidazole are dissolved in 70 parts of n-butanol solvent. 5 parts of curing agent of the mirror back anticorrosive paint modified by the graphene, the graphene oxide and the nano filler is added into 100 parts of main agent of the mirror back anticorrosive paint modified by the graphene, the graphene oxide and the nano filler and is uniformly mixed. Pouring the mixture into a paint groove of curtain coating equipment, and coating the paint on the glass by the curtain coating equipment after the glass lens with the silver layer is plated (the silver layer faces upwards). And heating the silver mirror through a production line (the temperature of a drying tunnel is 150 ℃ and the time is 10min) to obtain the coating protective layer on the back of the pure silver mirror.
Example 2
A mixed solvent A: 80 parts of n-butanol and 20 parts of ethanol.
And (3) mixing a solvent B: 20 parts of propylene glycol methyl ether acetate and 80 parts of diacetone alcohol.
Mixing a dispersing agent: two of the dispersants: 6 parts of polyamide dispersant and 4 parts of anionic dispersant.
Mixing graphene oxide prepared by a Hummers method and graphene prepared by a mechanical stripping method, wherein the mixing mass fraction is 1: 1, adding 1 part of polyvinylpyrrolidone into 56 parts of mixed solvent A, and then adding 3 parts of mixed graphene. Meanwhile, ultrasonic dispersion is utilized, and the mass percentage concentration of the mixed graphene in the solution is controlled to be 5%.
30 parts of epoxy resin was dissolved in 20 parts of the mixed solvent B, the mass of the solvent being 66.7% of the resin. Adding 2 parts of the mixed graphene solution into 50 parts of epoxy resin solution, sequentially adding 2 parts of mixed dispersing agent, 1 part of zinc oxide, 1 part of cerium dioxide, 5 parts of nano calcium carbonate, 17 parts of titanium dioxide, 2 parts of talcum powder and 30 parts of barium sulfate, uniformly stirring, standing in a 50 ℃ oven for 12 hours, adding 2 parts of dicyandiamide, uniformly stirring, pumping into a horizontal sand mill, grinding to 5 mu of fineness. And preparing mixed graphene-nano material-epoxy resin liquid. Adding pigment to adjust the color to the required color; and then 0.005 part of polyether modified organic silicon flatting agent is added to obtain the main agent of the mirror back anticorrosive paint modified by graphene, graphene oxide and nano filler.
15 parts of anhydride and 5 parts of salicylic acid promoter are dissolved in 80 parts of n-butanol solvent. 5 parts of the curing agent accelerator solution is added into 100 parts of the main agent and mixed evenly. Pouring the mixture into a paint groove of curtain coating equipment, and coating the paint on the glass by the curtain coating equipment after the glass lens with the silver layer is plated (the silver layer faces upwards). And heating the silver mirror through a production line (the temperature of a drying tunnel is 150 ℃ and the time is 10min) to obtain the coating protective layer on the back of the pure silver mirror.
Example 3
A mixed solvent A: 80 parts of n-butyl alcohol and 20 parts of monobutyl ether.
And (3) mixing a solvent B: 20 parts of xylene and 80 parts of diacetone alcohol.
Mixing a dispersing agent: two or more of the dispersants are mixed, 4 parts of a polyamide dispersant, and 6 parts of an anionic dispersant.
Mixing graphene oxide prepared by a Hummers method and graphene prepared by a mechanical stripping method, wherein the mixing mass fraction of the graphene oxide and the graphene is 1: 1, adding 3 parts of polyvinylpyrrolidone into 54 parts of mixed solvent A, and then adding 3 parts of mixed graphene. Meanwhile, ultrasonic dispersion is utilized, and the mass percentage concentration of the mixed graphene in the solution is controlled to be 5%.
30 parts of epoxy resin is dissolved in 20 parts of mixed solvent, and the mass of the solvent is 66.7 percent of the resin. Adding 2 parts of the mixed graphene solution into 50 parts of epoxy resin solution, sequentially adding 5 parts of mixed dispersing agent, 1 part of zinc oxide, 1 part of cerium dioxide, 5 parts of nano barium sulfate, 15 parts of titanium dioxide, 2 parts of talcum powder and 30 parts of barium sulfate, uniformly stirring, putting into a 50 ℃ oven, standing for 12 hours, pumping into a horizontal sand mill, grinding to 5 mu of fineness, and preparing mixed graphene-nano material-epoxy resin solution; adding pigment to adjust the color. And then 0.005 part of polyether modified organic silicon flatting agent is added to obtain the main agent of the mirror back anticorrosive paint modified by graphene, graphene oxide and nano filler.
15 parts of dicyandiamide and 15 parts of diphenylimidazole are dissolved in 70 parts of n-butanol solvent. 5 parts of the curing agent accelerator solution is added into 100 parts of the main agent and mixed evenly. Pouring the mixture into a paint groove of curtain coating equipment, and coating paint on glass by the curtain coating equipment on the glass lens (with the silver layer facing upwards) with the silver layer plated; and heating the silver mirror through a production line (the temperature of a drying tunnel is 150 ℃ and the time is 10min) to obtain the coating protective layer on the back of the pure silver mirror.
Example 4
A mixed solvent A: 70 parts of n-butanol and 30 parts of ethanol.
And (3) mixing a solvent B: 20 parts of dimethylbenzene, 75 parts of diacetone alcohol and 5 parts of mixed dibasic acid ester.
Mixing a dispersing agent: two or more of the dispersants are mixed, 7 parts of polyamide dispersant and 3 parts of anionic dispersant.
Mixing graphene oxide prepared by a Hummers method and graphene prepared by a mechanical stripping method, wherein the mixing mass fraction of the polyvinylpyrrolidone is 1: 1, 5 parts of polyvinylpyrrolidone is added into 52 parts of the mixed solvent A, and then 3 parts of the mixed graphene is added. Meanwhile, ultrasonic dispersion is utilized, and the mass percentage concentration of the mixed graphene in the solution is controlled to be 5%.
30 parts of epoxy resin is dissolved in 20 parts of mixed solvent, and the mass of the solvent is 66.7 percent of the resin. Adding 5 parts of the mixed graphene solution into 50 parts of epoxy resin solution, sequentially adding 2 parts of mixed dispersing agent, 1 part of zinc oxide, 1 part of cerium dioxide, 5 parts of nano barium sulfate, 17 parts of titanium dioxide, 2 parts of talcum powder, 15 parts of barium sulfate and 15 parts of calcium carbonate, uniformly stirring, putting into a 50 ℃ oven, standing for 12 hours, adding 2 parts of dicyandiamide, uniformly stirring, pumping into a horizontal sand mill, grinding to 5 mu of fineness to obtain mixed graphene-nano material-epoxy resin solution; adding a pigment to adjust the color to the required color, and then adding 0.005 part of polyester modified organic silicon flatting agent to obtain the main agent of the mirror back anticorrosive paint modified by graphene, graphene oxide and nano filler.
15 parts of anhydride and 5 parts of salicylic acid promoter are dissolved in 80 parts of n-butanol solvent. 5 parts of the curing agent accelerator solution is added into 100 parts of the main agent and mixed evenly. Pouring the mixture into a paint groove of curtain coating equipment, and coating the paint on the glass by the curtain coating equipment after the glass lens with the silver layer is plated (the silver layer faces upwards). And heating the silver mirror through a production line (the temperature of a drying tunnel is 150 ℃ and the time is 10min) to obtain the coating protective layer on the back of the pure silver mirror.
Example 5
A mixed solvent A: 70 parts of n-butanol and 30 parts of ethanol.
And (3) mixing a solvent B: 20 parts of dimethylbenzene and 80 parts of cyclohexanone.
Mixing a dispersing agent: two or more of the dispersants are mixed, 8 parts of polyamide dispersant and 2 parts of anionic dispersant.
Mixing graphene oxide prepared by a Hummers method and graphene prepared by a mechanical stripping method, wherein the mixing mass fraction of the polyvinylpyrrolidone is 1: 1, 5 parts of polyvinylpyrrolidone is added into 52 parts of the mixed solvent A, and then 3 parts of the mixed graphene is added. Meanwhile, the mass percentage concentration of the mixed graphene in the solution is controlled to be 5% by utilizing ultrasonic dispersion.
30 parts of epoxy resin is dissolved in 20 parts of mixed solvent, and the mass of the solvent is 66.7 percent of the resin. Adding 5 parts of the mixed graphene solution into 50 parts of epoxy resin solution, sequentially adding 2 parts of mixed dispersing agent, 5 parts of zinc oxide, 1 part of cerium dioxide, 7 parts of nano barium sulfate, 17 parts of titanium dioxide, 2 parts of talcum powder and 30 parts of barium sulfate, uniformly stirring, placing in a 50 ℃ oven for standing for 12 hours, pumping into a horizontal sand mill for grinding, and grinding to 5 mu of fineness to obtain the mixed graphene-nano material-epoxy resin solution. Adding pigment to adjust the color to the required color; and then 0.005 part of polyester modified organic silicon flatting agent is added to obtain the main agent of the mirror back anticorrosive paint modified by graphene, graphene oxide and nano filler.
15 parts of dicyandiamide and 15 parts of diphenylimidazole are dissolved in 70 parts of n-butanol solvent. 5 parts of the curing agent accelerator solution is added into 100 parts of the main agent and mixed evenly. Pouring the mixture into a paint groove of curtain coating equipment, and coating the paint on the glass by the curtain coating equipment after the glass lens with the silver layer is plated (the silver layer faces upwards). The coating protective layer on the back of the pure silver mirror is obtained by heating in a production line (the temperature of a drying tunnel is 150 ℃ and the time is 10 minutes).

Claims (7)

1. The mirror back anticorrosive coating based on graphene, graphene oxide and nano filler modification is characterized by comprising the following components in percentage by mass:
epoxy resin: 10 to 50;
graphene: 0.05 to 2;
and (3) graphene oxide: 0.05 to 2;
zinc oxide: 0.5 to 20;
cerium oxide: 0.5 to 20;
nano-filler: 1-30;
filling: 20-70 parts of;
pigment: 3-30;
dispersing agent: 1-10;
leveling agent: 0.005 to 1;
mixing solvent: 10 to 50;
curing agent: 2-10;
accelerator (b): 1-10;
the nano filler is selected from one of nano barium sulfate and nano calcium carbonate;
the pigment is selected from one of iron oxide yellow dispersion liquid based on epoxy resin grinding, carbon black dispersion liquid based on epoxy resin grinding, titanium dioxide and phthalocyanine blue dispersion liquid based on epoxy resin grinding;
the dispersing agent is selected from one of polyvinylpyrrolidone, phosphate ester dispersing agent, polyamide dispersing agent and anionic dispersing agent;
the mixed solvent is selected from at least two of ethanol, xylene, n-butanol, monobutyl ether, propylene glycol methyl ether acetate, diacetone alcohol, mixed dibasic acid ester and cyclohexanone;
the preparation method of the mirror back anticorrosive paint based on graphene, graphene oxide and nano filler modification comprises the following steps:
1) adding a dispersing agent into a mixed solvent A, then adding graphene and graphene oxide, and performing ultrasonic dispersion to obtain a graphene and graphene oxide dispersion solution, wherein the mixed solvent A is selected from at least two of mixed solvents;
2) dissolving epoxy resin in a mixed solvent B, adding a dispersing agent, a nano filler, a filler, titanium dioxide, zinc oxide and cerium dioxide, adding the graphene and graphene oxide dispersion liquid obtained in the step 1), grinding, adding an iron oxide yellow dispersion liquid based on epoxy resin grinding, a carbon black dispersion liquid based on epoxy resin grinding and a phthalocyanine blue dispersion liquid based on epoxy resin grinding to adjust the color, and adding a leveling agent to obtain a main agent of the mirror back anticorrosive paint modified by the graphene, the graphene oxide and the nano filler; the mixed solvent B is selected from at least two of the mixed solvents;
3) dissolving a curing agent and an accelerator in the mixed solvent C to obtain the curing agent of the mirror back anticorrosive paint modified based on graphene, graphene oxide and nano filler; the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler is composed of a main agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler obtained in the step 2) and a curing agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler; the mixed solvent C is selected from at least two of the mixed solvents.
2. The graphene, graphene oxide and nanofiller-based modified mirror back anticorrosive paint according to claim 1, wherein the epoxy resin has an epoxy equivalent of 80-2000.
3. The graphene, graphene oxide and nano filler modified based mirror back anticorrosive coating according to claim 1, wherein the filler is selected from one of barium sulfate, calcium carbonate and talcum powder.
4. The graphene, graphene oxide and nano filler modified based anticorrosion coating for back of mirror as claimed in claim 1, wherein the leveling agent is selected from one of polyether modified silicon organic silicon, polyester modified silicon organic silicon, and modified acrylic leveling agent.
5. The graphene, graphene oxide and nanofiller-based modified mirror back anticorrosive coating according to claim 1, wherein the curing agent is selected from one of dicyandiamide, acid anhydride, organic acid and polyamide; the accelerant is selected from one of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
6. The preparation method of the graphene, graphene oxide and nanofiller-modified-based mirror back anticorrosive paint according to any one of claims 1 to 5, characterized by comprising the following steps:
1) adding a dispersing agent into a mixed solvent A, then adding graphene and graphene oxide, and performing ultrasonic dispersion to obtain a graphene and graphene oxide dispersion solution, wherein the mixed solvent A is selected from at least two of mixed solvents;
2) dissolving epoxy resin in a mixed solvent B, adding a dispersing agent, a nano filler, a filler, titanium dioxide, zinc oxide and cerium dioxide, adding the graphene and graphene oxide dispersion liquid obtained in the step 1), grinding, adding an iron oxide yellow dispersion liquid based on epoxy resin grinding, a carbon black dispersion liquid based on epoxy resin grinding and a phthalocyanine blue dispersion liquid based on epoxy resin grinding to adjust the color, and adding a leveling agent to obtain a main agent of the mirror back anticorrosive paint modified by the graphene, the graphene oxide and the nano filler; the mixed solvent B is selected from at least two of the mixed solvents;
3) dissolving a curing agent and an accelerator in the mixed solvent C to obtain the curing agent of the mirror back anticorrosive paint modified based on graphene, graphene oxide and nano filler; the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler is composed of a main agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler obtained in the step 2) and a curing agent of the mirror back anticorrosive coating modified by the graphene, the graphene oxide and the nano filler; the mixed solvent C is selected from at least two of the mixed solvents.
7. The preparation method of the mirror back anticorrosive paint based on graphene, graphene oxide and nano filler modification according to claim 6, wherein in the step 2), the grinding is performed by a horizontal sand mill, the grinding requirement is that the fineness is less than or equal to 15 mu m, and the viscosity is controlled within 300-1000 Pa-s.
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CN107474683A (en) * 2017-02-17 2017-12-15 德阳烯碳科技有限公司 A kind of preparation method of anticorrosive paint

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