CN110845923A - Cobalt-plated coal ash organic-inorganic composite zinc-rich coating - Google Patents
Cobalt-plated coal ash organic-inorganic composite zinc-rich coating Download PDFInfo
- Publication number
- CN110845923A CN110845923A CN201911230068.8A CN201911230068A CN110845923A CN 110845923 A CN110845923 A CN 110845923A CN 201911230068 A CN201911230068 A CN 201911230068A CN 110845923 A CN110845923 A CN 110845923A
- Authority
- CN
- China
- Prior art keywords
- coal ash
- cobalt
- plated
- parts
- zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of preparation of zinc-rich paint, and discloses an organic-inorganic composite zinc-rich paint plated with cobalt-containing coal ash, which comprises the following raw materials of metallic zinc powder and modified nano TiO2The paint comprises cobalt-plated coal ash, organic silicon-acrylic acid compound emulsion, vinyl triethoxysilane, sodium silicate, silica sol, binary copolymer anti-settling agent and sodium polyacrylate dispersant. The organic-inorganic composite zinc-rich paint of the cobalt-plated coal ash obviously improves the cathode protection effect of the coating, the cobalt layer has conductivity and can reduce corrosion current, and simultaneously, the activity on the surface of the cobalt-plated coal ashSiO2The crosslinking degree of the sodium silicate is increased, the toughness of the sodium silicate is improved, so that the mechanical property of the coating is better, the cobalt-plated coal ash is added into the coating, the concentration of zinc powder can be effectively reduced, and the phenomenon that the zinc powder is unstable in the coating and is aggregated due to overhigh concentration of the zinc powder is avoided.
Description
Technical Field
The invention relates to the technical field of preparation of zinc-rich paint, in particular to cobalt-plated coal ash organic-inorganic composite zinc-rich paint.
Background
Corrosion is a process of metal, concrete, wood and other objects being damaged and destroyed by chemical action or electrochemical action of surrounding environment media (water, air, acid, alkali, salt), and causes huge economic loss due to corrosion in China and even all over the world every year.
The zinc-rich paint can be divided into organic zinc-rich paint and inorganic zinc-rich paint according to different film forming substances, but the existing organic zinc-rich paint has the following problems: the density of the zinc powder is far greater than that of the epoxy resin, so that the zinc powder is extremely easy to sink in the epoxy resin, once the uniformly dispersed zinc powder is subjected to coagulation and precipitation, the epoxy zinc-rich coating fails, meanwhile, the water-based epoxy zinc-rich coating is not as good in corrosion resistance as a solvent-based coating due to the hydrophilic group, the practicability and the applicability of the epoxy zinc-rich coating are reduced, the problems of uneven particle size distribution, poor stability and the like easily occur in the preparation process of the inorganic zinc-rich coating, the coating is easy to gelate in the storage process, the coating cannot be used, meanwhile, the coating of the inorganic zinc-rich coating is easy to have the problems of poor toughness, cracking, poor corrosion resistance and the like after construction and solidification, and the practicability and the applicability of the inorganic zinc-rich coating are reduced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the cobalt-plated coal ash organic-inorganic composite zinc-rich coating, solves the problems of poor toughness, cracking, poor corrosion resistance and the like when the zinc-rich coating is used, and simultaneously avoids the technical problem that the coating fails due to the fact that zinc powder is easy to sink in the coating and generates coagulation and precipitation effects in the existing zinc-rich coating.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the organic-inorganic composite zinc-rich paint of the cobalt-plated coal ash comprises the following raw materials, by weight, 25-30 parts of metallic zinc powder and 10-15 parts of modified nano TiO25-10 parts of cobalt-plated coal ash, 15-20 parts of organic silicon-acrylic acid compound emulsion, 0.7-1 part of vinyl triethoxysilane, 5-10 parts of sodium silicate, 10-15 parts of silica sol, 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersant.
Preferably, the plating isThe cobalt-plated coal ash remarkably improves the cathodic protection of the coating, the cobalt layer has conductivity and can reduce corrosion current, and simultaneously, the active SiO on the surface of the cobalt-plated coal ash2The crosslinking degree of the sodium silicate is increased, the toughness of the sodium silicate is improved, so that the mechanical property of the coating is better, the cobalt-plated coal ash is added into the coating, the concentration of zinc powder can be effectively reduced, and the phenomenon that the zinc powder is unstable in the coating and is aggregated due to overhigh concentration of the zinc powder is avoided.
Preferably, the preparation method of the cobalt-plated coal ash comprises the following steps: 15 g of coal ash is weighed, alternately washed with hydrochloric acid and sodium hydroxide for three times, and then soaked in 1 percent HF solution for 10min to activate SiO in the coal ash210 g of activated coal ash is weighed into 100 mL of cobalt ammonia solution, stirred for 1 h under a magnetic stirrer, decompressed and distilled to obtain a mixture, the mixture is washed with ethanol for three times, and then dried for 12 h at 65-75 ℃. The resulting sample was Co (OH) coated2Coal ash of (2), will be coated with Co (OH)2Adding the coal ash into a hydrazine hydrate solution, stirring for 3 h at the temperature of 80-85 ℃ for reduction, and finally obtaining the cobalt-plated coal ash particles.
Preferably, the modified nano TiO2The coating is added into the whole coating to enhance the adhesive force, the salt spray resistance and the whole corrosion resistance of the coating.
Preferably, the modified nano TiO2The preparation method comprises the following steps: taking 8 g of nano TiO2And adding 100 mL of ethanol into the granules to prepare a 10% solution, and mixing and stirring the solution uniformly. 0.5 g of vinyltriethoxysilane is added into 10 mL of distilled water to prepare a 5% aqueous solution, and the pH value is adjusted to 8-10 to fully prehydrolyze the mixture. Mixing the two solutions, performing ultrasonic oscillation and magnetic stirring at 75-85 deg.C for 2-3 hr to obtain nanometer TiO2Washing the particle slurry with ethanol, washing with distilled water, drying and grinding to obtain the modified nano TiO2And (3) granules.
Preferably, the metallic zinc powder is elementary flaky zinc and Zn (OH)2The mass ratio of the mixture of (1) and (2) is 20:1, and elemental flaky zinc sacrificial anode and Zn (OH) are utilized2The principle of protecting the cathode makes the coating obtain excellent corrosion resistanceAnd (4) performance.
Preferably, the binary copolymer anti-settling agent is a copolymer of a phenolic aldehyde amine curing agent and organic bentonite, and the mass ratio of the phenolic aldehyde amine curing agent to the organic bentonite is 1: 10.
Preferably, the preparation method of the cobalt-plated coal ash organic-inorganic composite zinc-rich coating comprises the following steps:
(1) weighing 25-30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol in a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes to prepare mixed zinc slurry;
(2) weighing 25-30 parts of mixed zinc slurry prepared in the step (1), adding into a stirrer, and sequentially adding 10-15 parts of modified nano TiO2And 5-10 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to obtain modified nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 5-10 parts of sodium silicate and 10-15 parts of silica sol, sequentially adding into a high-speed stirrer, adding 15-20 parts of organic silicon-acrylic acid compound emulsion, heating in a water bath to 60-65 ℃, stirring at a constant speed for 2 hours, and modifying the sodium silicate and the silica sol by using the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating.
(III) advantageous technical effects
Compared with the prior art, the invention has the following beneficial technical effects:
1. the organic-inorganic composite zinc-rich paint of the cobalt-plated coal ash creatively uses the cobalt-plated coal ash, obviously improves the cathode protection effect of a coating, has conductivity on a cobalt layer and can reduce corrosion current, and simultaneously, active SiO on the surface of the cobalt-plated coal ash2The crosslinking degree of the sodium silicate is increased, and the toughness of the sodium silicate is improved, so that the coating is formedThe mechanical property is better, and the cobalt-plated coal ash is added into the coating, so that the concentration of the zinc powder can be effectively reduced, and the phenomenon that the zinc powder is unstable in the coating and is coagulated due to overhigh concentration of the zinc powder is avoided.
2. The organic-inorganic composite zinc-rich paint of the cobalt-plated coal ash uses a copolymer of phenolic aldehyde amine curing agent and organic bentonite as a binary copolymer anti-settling agent, wherein the phenolic aldehyde amine curing agent can be used as a carrier of metal zinc powder, so that the problem of easy coagulation of the zinc powder in the liquid paint is well solved, wherein the metal zinc powder is simple substance flaky zinc and Zn (OH)2The mass ratio of the mixture of (1) and (2) is 20:1, and elemental flaky zinc sacrificial anode and Zn (OH) are utilized2The principle of protecting the cathode ensures that the coating obtains excellent anti-corrosion performance.
3. Organic-inorganic composite zinc-rich paint of cobalt-plated coal ash, using modified nano TiO2The coating is added into the whole coating to enhance the adhesive force, the salt spray resistance and the whole corrosion resistance of the coating.
Detailed Description
The organic-inorganic composite zinc-rich paint of the cobalt-plated coal ash comprises the following raw materials, by weight, 25-30 parts of metallic zinc powder and 10-15 parts of modified nano TiO25-10 parts of cobalt-plated coal ash, 15-20 parts of organic silicon-acrylic acid compound emulsion, 0.7-1 part of vinyl triethoxysilane, 5-10 parts of sodium silicate, 10-15 parts of silica sol, 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersant, wherein the cobalt-plated coal ash obviously improves the cathode protection effect of the coating, the cobalt layer has conductivity and can reduce corrosion current, and simultaneously, active SiO on the surface of the cobalt-plated coal ash2The crosslinking degree of the sodium silicate is increased, the toughness of the sodium silicate is improved, so that the mechanical property of the coating is better, the cobalt-plated coal ash is added into the coating, the concentration of zinc powder can be effectively reduced, the phenomenon that the zinc powder is unstable in the coating and causes coagulation is avoided due to overhigh concentration of the zinc powder, and the preparation method of the cobalt-plated coal ash is as follows: 15 g of coal ash is weighed, alternately washed with hydrochloric acid and sodium hydroxide for three times, and then soaked in 1 percent HF solution for 10min to activate SiO in the coal ash2Weighing 10 g of activated coal ash, adding the coal ash into 100 mL of cobalt ammonia solution, and carrying out magnetic treatmentStirring for 1 h under a force stirrer, distilling under reduced pressure to obtain a mixture, washing the mixture with ethanol for three times, and drying at 65-75 deg.C for 12 h. The resulting sample was Co (OH) coated2Coal ash of (2), will be coated with Co (OH)2Adding the coal ash into a hydrazine hydrate solution, stirring for 3 h at the temperature of 80-85 ℃ for reduction, and finally obtaining cobalt-plated coal ash particles and modified nano TiO2Added into the whole coating to enhance the adhesive force, the salt spray resistance and the whole corrosion resistance of the coating, and the modified nano TiO2The preparation method comprises the following steps: taking 8 g of nano TiO2And adding 100 mL of ethanol into the granules to prepare a 10% solution, and mixing and stirring the solution uniformly. 0.5 g of vinyltriethoxysilane is added into 10 mL of distilled water to prepare a 5% aqueous solution, and the pH value is adjusted to 8-10 to fully prehydrolyze the mixture. Mixing the two solutions, performing ultrasonic oscillation and magnetic stirring at 75-85 deg.C for 2-3 hr to obtain nanometer TiO2Washing the particle slurry with ethanol, washing with distilled water, drying and grinding to obtain the modified nano TiO2The particle and the metal zinc powder are simple substance flaky zinc and Zn (OH)2The mass ratio of the mixture of (1) and (2) is 20:1, and elemental flaky zinc sacrificial anode and Zn (OH) are utilized2The principle of protecting the cathode enables the coating to obtain excellent anti-corrosion performance, the binary copolymer anti-settling agent is a copolymer of phenolic aldehyde amine curing agent and organic bentonite, the mass ratio of the binary copolymer anti-settling agent to the organic bentonite is 1:10, the preparation method of the cobalt-plated coal ash organic-inorganic composite zinc-rich coating comprises the following steps:
(1) weighing 25-30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol in a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes to prepare mixed zinc slurry;
(2) weighing 25-30 parts of mixed zinc slurry prepared in the step (1), adding into a stirrer, and sequentially adding 10-15 parts of modified nano TiO2And 5-10 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to obtain modified nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 5-10 parts of sodium silicate and 10-15 parts of silica sol, sequentially adding into a high-speed stirrer, adding 15-20 parts of organic silicon-acrylic acid compound emulsion, heating in a water bath to 60-65 ℃, stirring at a constant speed for 2 hours, and modifying the sodium silicate and the silica sol by using the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating.
Example 1: (1) weighing 25 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol together into a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes, so as to prepare mixed zinc slurry;
(2) weighing 25 parts of the mixed zinc slurry prepared in the step (1), adding the mixed zinc slurry into a stirrer, and sequentially adding 10 parts of modified nano TiO2And 5 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to modify the nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 1 part of binary copolymer anti-settling agent and 1 part of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 5 parts of sodium silicate and 10 parts of silica sol, sequentially adding the distilled water, the 5 parts of sodium silicate and the 10 parts of silica sol into a high-speed stirrer, adding 15 parts of organic silicon-acrylic acid compound emulsion, heating the mixture in a water bath to 60-65 ℃, and stirring the mixture at a constant speed for 2 hours to modify the sodium silicate and the silica sol by the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating component 1.
Example 2: (1) weighing 25 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol together into a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes, so as to prepare mixed zinc slurry;
(2) weighing 25 parts of the mixed zinc slurry prepared in the step (1), adding the mixed zinc slurry into a stirrer, and stirringAdding 10 parts of modified nano TiO2And 5 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to modify the nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 2 parts of binary copolymer anti-settling agent and 2 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 5 parts of sodium silicate and 15 parts of silica sol, sequentially adding the distilled water, the 5 parts of sodium silicate and the 15 parts of silica sol into a high-speed stirrer, adding 20 parts of organic silicon-acrylic acid compound emulsion, heating the mixture in a water bath to 60-65 ℃, and stirring the mixture at a constant speed for 2 hours to modify the sodium silicate and the silica sol by the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating component 2.
Example 3: (1) weighing 30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol together into a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes, so as to prepare mixed zinc slurry;
(2) weighing 30 parts of the mixed zinc slurry prepared in the step (1), adding the mixed zinc slurry into a stirrer, and sequentially adding 12 parts of modified nano TiO2And 7 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to modify the nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 2 parts of binary copolymer anti-settling agent and 2 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 8 parts of sodium silicate and 13 parts of silica sol, sequentially adding the distilled water, 8 parts of sodium silicate and 13 parts of silica sol into a high-speed stirrer, adding 15 parts of organic silicon-acrylic acid compound emulsion, heating the mixture to 60-65 ℃ in a water bath, and stirring the mixture at a constant speed for 2 hours to modify the sodium silicate and the silica sol by the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating component 3.
Example 4: (1) weighing 30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol together into a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes, so as to prepare mixed zinc slurry;
(2) weighing 30 parts of the mixed zinc slurry prepared in the step (1), adding the mixed zinc slurry into a stirrer, and sequentially adding 10 parts of modified nano TiO2And 10 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to modify the nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 1 part of binary copolymer anti-settling agent and 3 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 10 parts of sodium silicate and 14 parts of silica sol, sequentially adding into a high-speed stirrer, adding 15 parts of organic silicon-acrylic acid compound emulsion, heating in a water bath to 60-65 ℃, and stirring at a constant speed for 2 hours to modify the sodium silicate and the silica sol by using the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the organic-inorganic composite zinc-rich coating component 4 of the cobalt-plated coal ash.
Example 5: (1) weighing 30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol together into a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes, so as to prepare mixed zinc slurry;
(2) weighing 30 parts of the mixed zinc slurry prepared in the step (1), adding the mixed zinc slurry into a stirrer, and sequentially adding 15 parts of modified nano TiO2And 10 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to modify the nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 3 parts of binary copolymer anti-settling agent and 3 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 10 parts of sodium silicate and 15 parts of silica sol, sequentially adding into a high-speed stirrer, adding 20 parts of organic silicon-acrylic acid compound emulsion, heating in a water bath to 60-65 ℃, and stirring at a constant speed for 2 hours to modify the sodium silicate and the silica sol by using the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the organic-inorganic composite zinc-rich coating component 5 of the cobalt-plated coal ash.
The anticorrosive epoxy resin coatings provided in examples 1 to 5 were subjected to performance tests according to the following test methods shown in table 2:
table 2 shows the results of the performance tests of examples 1-5:
Claims (7)
1. the organic-inorganic composite zinc-rich coating for the cobalt-plated coal ash comprises the following raw materials in parts by weight: 5-10 parts of cobalt-plated coal ash and 10-15 parts of modified nano TiO215-20 parts of organic silicon-acrylic acid compound emulsion, 0.7-1 part of vinyl triethoxysilane, 5-10 parts of sodium silicate, 10-15 parts of silica sol, 25-30 parts of metal zinc powder, 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersing agent.
2. The organic-inorganic composite zinc-rich coating plated with cobalt and coal ash according to claim 1 is characterized in that: the cobalt-plated coal ash is formed by plating a layer of metal cobalt on the surface of coal ash.
3. The organic-inorganic composite zinc-rich coating plated with cobalt and coal ash according to claim 1 is characterized in that: the preparation method of the cobalt-plated coal ash comprises the following steps: 15 g of coal ash is weighed, alternately washed with hydrochloric acid and sodium hydroxide for three times, and then soaked in 1 percent HF solution for 10min to activate SiO in the coal ash2Weighing 10 g of activated coal ash, adding the coal ash into 100 mL of cobalt ammonia solution, stirring for 1 h under a magnetic stirrer, distilling under reduced pressure to obtain a mixture, and using ethanolThe mixture was washed three times and then dried at 65-75 ℃ for 12 h. The resulting sample was Co (OH) coated2Coal ash of (2), will be coated with Co (OH)2Adding the coal ash into a hydrazine hydrate solution, stirring for 3 h at the temperature of 80-85 ℃ for reduction, and finally obtaining the cobalt-plated coal ash particles.
4. The organic-inorganic composite zinc-rich coating plated with cobalt and coal ash according to claim 1 is characterized in that: the modified nano TiO2The preparation method comprises the following steps: taking 8 g of nano TiO2And adding 100 mL of ethanol into the granules to prepare a 10% solution, and mixing and stirring the solution uniformly. 0.5 g of vinyltriethoxysilane is added into 10 mL of distilled water to prepare a 5% aqueous solution, and the pH value is adjusted to 8-10 to fully prehydrolyze the mixture. Mixing the two solutions, performing ultrasonic oscillation and magnetic stirring at 75-85 deg.C for 2-3 hr to obtain nanometer TiO2Washing the particle slurry with ethanol, washing with distilled water, drying and grinding to obtain the modified nano TiO2And (3) granules.
5. The organic-inorganic composite zinc-rich coating plated with cobalt and coal ash according to claim 1 is characterized in that: the metal zinc powder is simple substance sheet zinc and Zn (OH)2The mass ratio of (1) to (20).
6. The organic-inorganic composite zinc-rich coating plated with cobalt and coal ash according to claim 1 is characterized in that: the binary copolymer anti-settling agent is a copolymer of a phenolic aldehyde amine curing agent and organic bentonite, and the mass ratio of the phenolic aldehyde amine curing agent to the organic bentonite is 1: 10.
7. The organic-inorganic composite zinc-rich paint plated with cobalt and coal ash according to claim 1, wherein the preparation method of the organic-inorganic composite zinc-rich paint plated with cobalt and coal ash comprises the following steps:
(1) weighing 25-30 parts of metal zinc powder, placing the metal zinc powder and absolute ethyl alcohol in a grinding tank, and grinding the metal zinc powder and the absolute ethyl alcohol to obtain fine zinc powder with the particle size of 1000 meshes to prepare mixed zinc slurry;
(2) weighing 25-30 parts of mixed zinc slurry prepared in the step (1), adding into a stirrer, and sequentially adding 10-15 parts of modified nano TiO2And 5-10 parts of cobalt-plated coal ash, and stirring at constant speed for 1 hour to obtain modified nano TiO2And cobalt-plated coal ash are uniformly mixed into the zinc slurry, then 1-3 parts of binary copolymer anti-settling agent and 1-3 parts of sodium polyacrylate dispersant are sequentially added, and the mixture is uniformly stirred for 2 hours to prepare the coating pigment.
(3) Weighing 50 mL of distilled water, 5-10 parts of sodium silicate and 10-15 parts of silica sol, sequentially adding into a high-speed stirrer, adding 15-20 parts of organic silicon-acrylic acid compound emulsion, heating in a water bath to 60-65 ℃, stirring at a constant speed for 2 hours, and modifying the sodium silicate and the silica sol by using the organic silicon-acrylic acid compound emulsion to obtain a sodium silicate mixed solution, thus preparing a coating base material;
(4) and (3) sequentially adding the coating pigment prepared in the step (2) and the coating base material prepared in the step (3) into a stirrer, quickly stirring for 1 h, and carrying out physical blending and uniform dispersion to prepare the cobalt-plated coal ash organic-inorganic composite zinc-rich coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230068.8A CN110845923A (en) | 2019-12-04 | 2019-12-04 | Cobalt-plated coal ash organic-inorganic composite zinc-rich coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230068.8A CN110845923A (en) | 2019-12-04 | 2019-12-04 | Cobalt-plated coal ash organic-inorganic composite zinc-rich coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110845923A true CN110845923A (en) | 2020-02-28 |
Family
ID=69607679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911230068.8A Withdrawn CN110845923A (en) | 2019-12-04 | 2019-12-04 | Cobalt-plated coal ash organic-inorganic composite zinc-rich coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110845923A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245208A (en) * | 2008-02-27 | 2008-08-20 | 华中师范大学 | Shockproof corrosion resistant nano-composite zinc-rich paint and manufacture method thereof |
| CN106119818A (en) * | 2016-08-30 | 2016-11-16 | 合肥乐凯科技产业有限公司 | A kind of method of inorganic powder surface chemical plating and thin film thereof |
| CN109777167A (en) * | 2019-01-11 | 2019-05-21 | 华东理工大学 | A kind of preparation method of inorganic zinc coating |
| CN110305560A (en) * | 2019-07-10 | 2019-10-08 | 嘉兴瑛蔓贸易有限公司 | A kind of anti-coagulation modified epoxy zinc-rich paint of bi-component anti-corrosion |
-
2019
- 2019-12-04 CN CN201911230068.8A patent/CN110845923A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245208A (en) * | 2008-02-27 | 2008-08-20 | 华中师范大学 | Shockproof corrosion resistant nano-composite zinc-rich paint and manufacture method thereof |
| CN106119818A (en) * | 2016-08-30 | 2016-11-16 | 合肥乐凯科技产业有限公司 | A kind of method of inorganic powder surface chemical plating and thin film thereof |
| CN109777167A (en) * | 2019-01-11 | 2019-05-21 | 华东理工大学 | A kind of preparation method of inorganic zinc coating |
| CN110305560A (en) * | 2019-07-10 | 2019-10-08 | 嘉兴瑛蔓贸易有限公司 | A kind of anti-coagulation modified epoxy zinc-rich paint of bi-component anti-corrosion |
Non-Patent Citations (2)
| Title |
|---|
| 王杏: "《纳米二氧化钛的生产与应用》", 31 July 2014, 贵州科技出版社 * |
| 胡传炘: "《涂层技术原理及应用》", 30 September 2000, 化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3948934B2 (en) | Aluminum pigment, method for producing the same, and resin composition | |
| CN108997889A (en) | A kind of ocean naval vessel graphene heavy antisepsis priming paint and preparation method thereof | |
| CN103497636A (en) | Waterborne epoxy zinc-rich paint modified by nanometer conductive carbon material and preparation method thereof | |
| CN110054965B (en) | Modified graphene oxide co-cured waterborne epoxy resin coating and preparation method thereof | |
| CN107964097B (en) | Preparation method and application of ternary nanocomposite of reduced graphene oxide, ferroferric oxide and polyaniline | |
| CN113088162B (en) | Wear-resistant epoxy resin coating and preparation method thereof | |
| CN109593429A (en) | A kind of preparation method and application of L-Trp modified graphene oxide aqueous epoxy resins | |
| CN100363445C (en) | Phosphoric acid doped polyphenylamine phosphate priming paint and preparing process thereof | |
| CN110643267A (en) | Thin-coating heavy-duty anticorrosive coating and preparation method thereof | |
| CN107828313B (en) | Epoxy resin coating containing modified graphene oxide and preparation method thereof | |
| CN110878184A (en) | Graphene modified epoxy zinc-rich primer and preparation method thereof | |
| CN104403448A (en) | Nano cuprous oxide and nano silver compounded sea anti-fouling paint | |
| CN108219558A (en) | A kind of waterborne antibacterial anti-corrosion Dyclo paint and preparation method thereof | |
| CN114621654A (en) | Water-based epoxy zinc-rich primer and preparation method and application thereof | |
| CN108641543B (en) | Marine anticorrosive paint based on liquid metal and preparation method thereof | |
| CN109179497A (en) | A kind of spherical tio2 preparation method and its application in terms of automatic cleaning coating | |
| CN108912960A (en) | A kind of selfreparing anticorrosive paint | |
| CN110628242B (en) | Organic coating modification method of zinc phosphate | |
| CN110845923A (en) | Cobalt-plated coal ash organic-inorganic composite zinc-rich coating | |
| CN112029314A (en) | Nano-filler and preparation method and application thereof | |
| CN114163859B (en) | Preparation method of zinc oxide-hydroxyapatite composite anticorrosive pigment | |
| CN109233562A (en) | A kind of anticorrosive coating for metal surface | |
| CN107815218A (en) | A kind of method for preparing polymolecularity graphene anticorrosive paint | |
| CN105062355B (en) | Nano-composite water durably anticorrosion paint preparation method for ship | |
| CN113913087A (en) | Preparation method of normal-temperature cured wear-resistant anticorrosion super-hydrophobic coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200228 |
|
| WW01 | Invention patent application withdrawn after publication |