CN112143360A - Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof - Google Patents
Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof Download PDFInfo
- Publication number
- CN112143360A CN112143360A CN202011075652.3A CN202011075652A CN112143360A CN 112143360 A CN112143360 A CN 112143360A CN 202011075652 A CN202011075652 A CN 202011075652A CN 112143360 A CN112143360 A CN 112143360A
- Authority
- CN
- China
- Prior art keywords
- component
- parts
- graphene
- zinc
- zinc powder
- 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.)
- Pending
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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- 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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
Abstract
A zinc-containing coating of graphene modified polyaspartic acid ester and a preparation method thereof, the coating comprises a component A capable of being cured to form a film and a component B containing a curing agent, wherein the component A comprises high-solid-content low-viscosity polyaspartic acid ester resin, an organic solvent, a dispersing agent, graphene, zinc powder, an anti-rust pigment, a leveling agent and an anti-settling agent; the component B is isocyanate or a mixture of the isocyanate and an organic solvent. The graphene modified polyaspartic acid ester zinc-containing coating belongs to an environment-friendly green product, is higher in drying speed than the existing common epoxy zinc powder coating, can meet the requirements of a wet-on-wet spraying process, and can reach a film forming thickness of more than 120 mu m at one time, so that the construction efficiency is greatly improved; the salt spray resistance is better, and the adhesive force is good; the method has the advantages of environment-friendly production process, simple process, no need of sanding process, low cost and contribution to industrial large-scale production.
Description
Technical Field
The invention relates to a zinc-containing anticorrosive coating and a preparation method thereof, and particularly relates to a graphene modified polyaspartic acid ester zinc-containing coating and a preparation method thereof.
Background
The epoxy zinc-rich primer is used as a common primer in an industrial heavy-duty anticorrosive coating system, and has good antirust and anticorrosive effects by virtue of the cathodic protection effect and the passivation effect, and the salt spray resistance time is 400-600 h when the zinc powder content in a dry film is 70%; however, a large amount of zinc powder needs to be added in the formula, so that the product cost is increased, the consumption of the zinc powder is high, the utilization rate is low, the metal zinc fails too fast, a large amount of zinc fog is generated during cutting and welding, the environment is polluted, the health of operators is harmed, and the resource waste is caused. In addition, the epoxy zinc-rich primer contains a large amount of zinc powder, and a dry film is easy to foam, so that the mechanical property of the primer is reduced, and the performance of the whole composite coating is influenced.
By introducing the graphene modification technology, the epoxy graphene zinc-containing paint has the advantages of low zinc powder consumption, good salt spray resistance and adhesive force performance, better performance and lower cost compared with epoxy zinc-rich primer, but as the epoxy zinc-rich primer belongs to epoxy resin paint, the epoxy zinc-rich primer still has the defects of low drying speed (especially in winter), unsuitability for wet-on-wet spraying of a subsequent coating, low construction efficiency, high VOC and the like.
CN105505110A discloses a graphene-coated zinc-plated anticorrosive paint and a preparation method thereof, wherein the graphene-coated zinc-plated anticorrosive paint is prepared from the following components in parts by weight: 0.05-0.06 part of absolute ethyl alcohol, 1.45-1.50 parts of a xylene solvent, 0.16-0.5 part of organic bentonite, 3.6-7.6 parts of a cyclohexanone solvent, 3.6-7.6 parts of a butyl cellosolve solvent, 0.24-0.26 part of an anti-settling agent, 55-76 parts of zinc powder, 0.15-0.22 part of a graphene material, 15-25 parts of epoxy resin, and 0.12-0.15 part of a defoaming agent and a leveling agent. Although the coating has good corrosion resistance, good adhesive force, aging resistance and water resistance, the invention does not provide specific data of the adhesive force, a curing agent formula and a process, and more importantly, the coating does not reduce the content of zinc powder, has high material cost, large consumption of zinc powder resources, slow drying speed, multiple steps and complex production process.
CN105713481A discloses a graphene modified epoxy zinc-rich primer and a preparation method thereof, wherein the primer comprises the following components in parts by mass: 15-30 parts of modified epoxy resin, 0.3-5 parts of graphene, 2-8 parts of butanol, 4-10 parts of toluene, 0.3-3 parts of anti-settling agent and 70-90 parts of zinc powder, wherein the modified epoxy resin is phthalic acid modified epoxy resin. The preparation method comprises the following steps: (1) preparing modified epoxy resin phthalic acid modified epoxy resin; (2) preparing graphene epoxy resin slurry; (3) and preparing the graphene modified epoxy zinc-rich primer. Although the coating prepared from the primer has excellent performances such as salt spray resistance, adhesion and the like, the primer does not reduce the content of zinc powder, has high material cost, large consumption of zinc powder resources, multiple steps and complex production process, and is inconvenient for industrial production.
CN105086754A discloses a two-component graphene anticorrosive paint, which comprises a component A capable of being cured to form a film and a component B containing a curing agent; wherein the component A comprises the following components in percentage by mass: 0.1-5 wt% of graphene; 0-35 wt% of zinc powder; 30-70 wt% of a filler; 10-20 wt% of epoxy resin with solid content of 54%; 10-20 wt% of a solvent; the graphene, the zinc powder and the filler are 60-80 wt% in percentage by mass, and the sum of the components of the component A is 100 wt%. Although the coating improves the anticorrosion effect and greatly reduces the content of zinc powder at the same time of improving the anticorrosion effect by selecting the components, the anticorrosion mode of zinc-rich coating at the cost of sacrificing zinc powder is overcome, zinc oxide mist generated during welding is greatly reduced, and the coating is environment-friendly, the coating has poor mechanical property, 2-grade adhesive force, 5mm flexibility, 40cm impact strength, 2HB hardness and 500-1000 h salt mist resistance due to the single selection of film forming substances and no antirust effect of the selected filler, and the performance is required to be further improved, so that the potential application field is narrow; in the method, the graphene anticorrosive coating component A is prepared by grinding through a three-roller grinder, the grinding process is open, the solvent volatilization amount is large, the production space is seriously polluted, the VOC emission exceeds the standard, the volatile solvent amount in the formula is uncontrollable, the VOC is high, and the stability of industrial production cannot be ensured.
CN105623471A discloses an epoxy resin-graphene-zinc powder anticorrosive paint and a preparation method thereof, wherein a single bisphenol-A epoxy resin and a polyamide curing agent are selected as paint film forming substances, and a high-speed dispersion machine is used for preparing the epoxy resin-graphene-zinc powder anticorrosive paint, although the content of zinc powder is greatly reduced, the film forming substances are not properly selected, the paint prepared by the method has poor anticorrosive performance, the adhesive force is 0-1 grade, the flexibility is 1-2 grade, and the salt spray resistance time is only 600 hours.
CN105623473A discloses a preparation method of a zinc-containing graphene anticorrosive primer based on a graphene dispersion, which comprises a first component and a second component, wherein the first component comprises 5-20 parts of epoxy resin, 5-15 parts of solvent, 0.1-1 part of dispersing agent, 20-30 parts of filler, 20-50 parts of zinc powder, 1-2 parts of anti-settling agent and 0.1-1 part of graphene, and the second component comprises 40-80 parts of polyamide, 5-15 parts of coupling agent and 5-15 parts of solvent. Is also an epoxy resin coating, and has the defects of slow drying speed, higher VOC content, lower construction efficiency and the like.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing the graphene modified polyaspartic acid ester zinc-containing coating which is less in zinc powder consumption, good in salt spray resistance and adhesive force performance, faster in drying speed, suitable for a subsequent wet-on-wet spraying coating, lower in VOC (volatile organic compounds), environment-friendly and thicker in primary film forming compared with an epoxy zinc powder coating.
The invention further aims to solve the technical problem of overcoming the defects in the prior art, and provides the preparation method of the graphene modified polyaspartic acid ester zinc-containing coating, which has the advantages of environment-friendly production process, simple process, no need of sanding process, energy and manpower saving, low equipment cost and contribution to industrial large-scale production.
The technical scheme adopted by the invention for solving the technical problems is as follows: the curing agent comprises a component A capable of curing to form a film and a component B containing a curing agent, and is characterized in that: the component A comprises high-solid-content low-viscosity polyaspartic acid ester resin, an organic solvent, a dispersing agent, graphene, zinc powder, an anti-rust pigment, a leveling agent and an anti-settling agent; the zinc powder is a mixture of spherical zinc powder and flaky zinc powder with the particle size of 800-1200 meshes, and the ratio of the spherical zinc powder to the flaky zinc powder is 9-22; the component B is isocyanate or a mixture of isocyanate and an organic solvent; the mass ratio of the component A to the component B is 9-11: 1.
The component A comprises the following components in percentage by mass: 140-200 parts of high-solid-content low-viscosity polyaspartic acid ester resin, 50-90 parts of organic solvent, 8-15 parts of dispersing agent, 5-15 parts of graphene, 280-320 parts of antirust pigment, 390-410 parts of spherical zinc powder, 20-40 parts of flaky zinc powder, 2-5 parts of flatting agent and 5-10 parts of anti-settling agent.
In the component B, the mass of the organic solvent in the mixture of isocyanate and the organic solvent is less than or equal to 10 percent.
The mass content of graphene in the component A is 8-12%, the number of layers of graphene is less than or equal to 10, and the sheet diameter of graphene is less than or equal to 15 microns.
The antirust pigment is a mixture of 140-160 parts of iron oxide red and 140-160 parts of ferrophosphorus powder.
Preferably, in the component A, the high-solid content low-viscosity polyaspartic ester resin is F2850, F221, F321,
One or more of NH 2886.
Preferably, in the component A, the dispersant is one or more of BYK-163, TEGO-670 and AFCONA4071 (more preferably BYK-163).
Preferably, the iron oxide red in the rust-proof pigment in the component A is produced by Langsheng company, and the paint prepared by the iron oxide red has low viscosity, good fluidity and good stability. The iron oxide red has strong covering power and fine particles, can form a compact coating in a paint film, has excellent chemical resistance and good weather resistance, and can strongly absorb ultraviolet rays. As an important auxiliary antirust pigment, iron oxide red is properly added into the zinc powder coating, so that the protective performance of the coating can be enhanced by a compact layer formed by the iron oxide red while the cathodic protection of the zinc layer is not influenced. The addition amount of the iron oxide red is preferably 140-160 parts, too much addition amount influences the cathode protection function of the zinc powder, and too little addition amount influences the compactness and the protection performance of the whole coating.
Preferably, in the component A, the particle sizes of the spherical zinc powder and the ferrophosphorus powder are both 800-1200 meshes. According to the invention, the raw materials with proper particle size are selected, sanding is not needed, and the consumption of energy, materials and manpower is reduced. The anti-corrosion coating prepared by the method has the advantages that the zinc powder is arranged in a flaky manner, the parallel lap joint and the contact mode between the sheets are surface contact, the coating is compact, the corrosion route is long, the zinc consumption in unit area is greatly reduced, and the shielding performance and the corrosion resistance of the coating are greatly improved.
Preferably, in the component A, the anti-settling agent is one or more of Bentone 828, R-972 and BYK-410.
Preferably, in the component A, the leveling agent is one or more of polyether modified polydimethylsiloxane, acrylate copolymer or fluorocarbon polymer.
Preferably, in the component B, isocyanate is one or more of hexamethylene diisocyanate trimer or uretdione, more preferably, the hexamethylene diisocyanate trimer is one or two of N3900 and N3600 produced by Corsia, and the uretdione is N3400 produced by Corsia. The component B can be used for adjusting the paint-solid ratio by adding or not adding an organic solvent.
Preferably, the organic solvent in the component A and the component B is one or more of dehydrated xylene, dehydrated butyl acetate, dehydrated ethyl acetate or propylene glycol methyl ether acetate. More preferably, the organic solvent in the component A is dehydrated xylene, dehydrated butyl acetate and propylene glycol methyl ether acetate in a mass ratio of 5: 4: 1, and the organic solvent in the component B is dehydrated butyl acetate.
The invention discloses a preparation method of a graphene modified polyaspartic acid ester zinc-containing coating, which comprises the following steps:
the method comprises the following steps:
(1) preparation of the component A: uniformly mixing and stirring 140-200 parts of high-solid-content low-viscosity polyaspartic acid ester resin, 50-90 parts of organic solvent and 8-15 parts of dispersing agent to form a clear solution, adding graphene in a stirring state, dispersing, and then sequentially adding 280-320 parts of antirust pigment, 390-410 parts of spherical zinc powder, 20-40 parts of flaky zinc powder, 2-5 parts of flatting agent and 5-10 parts of anti-settling agent, and dispersing at a high speed to obtain the anti-settling agent;
(2) preparation of the component B: when the component B contains an organic solvent, mixing the isocyanate and the organic solvent uniformly to obtain the product;
(3) when the composition is used, the component A obtained in the step (1) and the component B obtained in the step (2) are mixed according to the mass ratio of 9-11: 1, and the composition is obtained.
In the step (1), after the graphene is added, dispersing at a speed of 800-1200 r/min for 15-20 min; after all the components are added, the components are dispersed at high speed, the dispersion speed is 1500-2000 r/min, the dispersion time is 30-60 min, and the components are dispersed until the fineness is less than or equal to 40 mu m.
The invention has the following beneficial effects:
(1) the graphene modified polyaspartic acid ester zinc-containing coating has salt spray resistance of 3000h, adhesion of more than 12MPa, which is far higher than the highest salt spray resistance index 1440h in HG/T5373-2019 graphene zinc powder coating and the standard of adhesion of 6MPa, and the performance of the coating is obviously superior to that of the commonly used epoxy zinc powder coating in the market, so that the coating is suitable for the field of industrial heavy corrosion prevention;
(2) the graphene modified polyaspartic acid ester zinc-containing coating has the surface drying time of less than or equal to 15min (25 ℃) and the actual drying time of less than or equal to 1h (25 ℃), is greatly improved in drying speed compared with epoxy zinc powder coatings, is suitable for wet-on-wet spraying of subsequent coatings, has the construction solid content of more than 90 percent, has the once film forming thickness of 120 mu m, and greatly reduces the construction VOC compared with epoxy zinc powder coatings, and belongs to green and environment-friendly products.
(3) The zinc powder is a mixture of spherical zinc powder and flaky zinc powder with the particle size of 800-1200 meshes, and the flaky zinc powder has strong covering power, floating power, shielding power and metallic luster due to the addition of a small amount of flaky zinc powder, the zinc powder is arranged in flakes, the flakes are in parallel lap joint with each other, the contact mode is surface contact, the coating is compact, and the corrosion route is long, the content of the zinc powder is 41-45%, compared with 70-80% in a zinc-rich primer, the using amount of the zinc powder is at least reduced by more than 1/3, and if the reduction amount is larger according to the solid content; not only greatly reduces the zinc consumption in unit area, but also greatly improves the shielding performance and the corrosion resistance of the coating. Compared with the existing common epoxy zinc-rich primer, the using amount of zinc powder is reduced by at least 1/3, so that zinc mist generated during welding is greatly reduced, zinc resources are saved, and the primer is environment-friendly;
(4) the method has the advantages of friendly production process, simple process, no need of sanding, energy and manpower saving, low cost of used equipment and contribution to industrial large-scale production.
Detailed Description
The present invention will be further described with reference to the following examples.
The high-solid-content low-viscosity polyaspartic ester resins F2850, F221 and F321 used in the embodiment of the invention are purchased from Feiyang chemical industry,
NH 2886 was purchased from kostew; the used dispersing agents BYK-163, TEGO-670 and AFCONA4071 are respectively purchased from Bike, Digao and AFCONA; the used graphene is purchased from Gerufeng or Tianyun Xiwuwang; the iron oxide red used was purchased from Langshen; the grain size of the spherical zinc powder is 1000 meshes,purchased from yuekong; the grain size of the spherical zinc powder is 1000 meshes and is purchased from Xinweiling institute; the used flaky zinc powder is purchased from a new Jinhao material; the grain size of the used ferrophosphorus powder is 1000 meshes and is purchased from Nocheng chemical; the anti-settling agents Bentone 828, R-972, BYK-410 used were purchased from D.Hemmine, D.Gusai, and Bike, respectively; hexamethylene diisocyanate trimers N3900, N3600 and uretdione N3400 which were used were all available from Corsia.
The chemical reagents used in the examples of the present invention, unless otherwise specified, are commercially available in a conventional manner.
Examples 1 to 3 of the graphene-modified polyaspartic acid ester zinc-containing coating of the invention
The weight parts of the raw materials are shown in table 1:
TABLE 1 weight parts of the raw materials of graphene modified polyaspartic acid ester zinc-containing coating examples 1-3
Note: in the table, "-" indicates no addition.
Preparation method example 1
(1) Preparation of the component A: according to the weight parts of the raw materials in the embodiment 1 in the table 1, the polyaspartic acid ester resin, the organic solvent and the dispersing agent are mixed and stirred uniformly to form a clear solution, graphene is added in the stirring state, the mixture is dispersed for 15min at the rotating speed of 800r/min, then iron oxide red, spherical zinc powder, flaky zinc powder, ferrophosphorus powder, a leveling agent and an anti-settling agent are sequentially added, and the mixture is dispersed at a high speed for 30min to the fineness of less than or equal to 40 mu m at the rotating speed of 1500r/min to obtain the dispersion;
(2) preparation of the component B: uniformly mixing N3900 and N3600 according to the weight parts of the raw materials in the example 1 in the table 1 to obtain the fertilizer;
(3) when in use, the component A obtained in the step (1) and the component B obtained in the step (2) are mixed according to the mass ratio of 11:1, and the composition is obtained.
Preparation method example 2
(1) Preparation of the component A: according to the weight parts of the raw materials in the embodiment 2 shown in the table 1, the polyaspartic acid ester resin, the organic solvent and the dispersing agent are mixed and stirred uniformly to form a clear solution, graphene is added in the stirring state, the mixture is dispersed for 20min at the rotating speed of 1000r/min, then iron oxide red, spherical zinc powder, flaky zinc powder, ferrophosphorus powder, a leveling agent and an anti-settling agent are sequentially added, and the mixture is dispersed at a high speed of 1800r/min for 45min until the fineness is less than or equal to 40 mu m, so that the dispersion is obtained;
(2) preparation of the component B: uniformly mixing N3900 and dehydrated butyl acetate according to the weight parts of the raw materials in the example 1 in the table 1;
(3) when in use, the component A obtained in the step (1) and the component B obtained in the step (2) are mixed according to the mass ratio of 10:1, and the composition is obtained.
Preparation method example 3
(1) Preparation of the component A: according to the weight parts of the raw materials in the embodiment 3 shown in the table 1, the polyaspartic acid ester resin, the organic solvent and the dispersing agent are mixed and stirred uniformly to form a clear solution, graphene is added in the stirring state, the mixture is dispersed for 15min at the rotating speed of 1200r/min, then iron oxide red, spherical zinc powder, flaky zinc powder, ferrophosphorus powder, a leveling agent and an anti-settling agent are sequentially added, and the mixture is dispersed at a high speed for 60min to the fineness of less than or equal to 40 mu m at the rotating speed of 2000r/min to obtain the dispersion;
(2) preparation of the component B: mixing N3400 and an organic solvent (XYL: BAC: 1) uniformly according to the weight parts of the raw materials in the example 1 in the table 1 to obtain the composite material;
(3) when in use, the component A obtained in the step (1) and the component B obtained in the step (2) are mixed according to the mass ratio of 9:1, and the composition is obtained.
The graphene modified polyaspartic acid ester zinc-containing coating and the commercially available epoxy graphene zinc-containing coating (zinc content is 50%) in the embodiments 1-3 are respectively prepared into plates according to the film thicknesses specified by the test standards in the table 2, after the plates are fully dried according to the test standards, the indexes of drying speed, salt spray resistance, adhesive force, non-volatile matter, construction solid and the like of the plates are detected according to the corresponding test standards in the table 2, and the indexes are compared with the key index requirements in the entry mark HG/T5573-2019 graphene zinc powder coating, as shown in the table 2.
Table 2 comparison table of key index data of graphene modified polyaspartic acid ester zinc-containing coating and commercially available epoxy graphene zinc-containing coating in examples 1-3
As can be seen from table 2, the graphene modified polyaspartic acid ester zinc-containing coating obtained in embodiments 1 to 3 of the present invention has a drying speed greatly increased compared with a commercially available epoxy graphene zinc-containing coating, is suitable for a subsequent coating sprayed wet-on-wet, has a construction solid content of more than 90%, has a once film thickness of more than 120 μm, has a construction VOC greatly reduced compared with the epoxy graphene zinc-containing coating, and belongs to a green and environment-friendly product. In summary, the graphene modified polyaspartic acid ester zinc-containing coating in embodiments 1-3 of the invention has the advantages of small zinc powder consumption, long salt spray resistance time, good adhesion performance, high non-volatile content, low VOC content, better performance compared with epoxy graphene zinc-containing coatings, environmental friendliness, and suitability for the field of industrial heavy corrosion prevention.
Claims (8)
1. The graphene modified polyaspartic acid ester zinc-containing coating comprises a component A capable of being cured to form a film and a component B containing a curing agent, and is characterized in that: the component A comprises high-solid-content low-viscosity polyaspartic acid ester resin, an organic solvent, a dispersing agent, graphene, zinc powder, an anti-rust pigment, a leveling agent and an anti-settling agent; the zinc powder is a mixture of spherical zinc powder and flaky zinc powder with the particle size of 800-1200 meshes, and the ratio of the spherical zinc powder to the flaky zinc powder is 9-22; the component B is isocyanate or a mixture of isocyanate and an organic solvent; the mass ratio of the component A to the component B is 9-11: 1.
2. The graphene-modified polyaspartate zinc-containing coating according to claim 1, wherein the component A comprises the following components in parts by mass: 140-200 parts of high-solid-content low-viscosity polyaspartic acid ester resin, 50-90 parts of organic solvent, 8-15 parts of dispersing agent, 5-15 parts of graphene, 280-320 parts of antirust pigment, 390-410 parts of spherical zinc powder, 20-40 parts of flaky zinc powder, 2-5 parts of flatting agent and 5-10 parts of anti-settling agent.
3. The graphene-modified polyaspartate zinc-containing coating of claim 1, wherein: the mass content of graphene in the component A is 8-12%, the number of layers of graphene is less than or equal to 10, and the sheet diameter of graphene is less than or equal to 15 microns.
4. The zinc-containing graphene modified polyaspartate coating according to claim 1, wherein the antirust pigment is a mixture of 140-160 parts of iron oxide red and 140-160 parts of ferrophosphorus powder.
5. The graphene-modified polyaspartate zinc-containing coating of claim 1, 2, or 3, wherein: in the A component, the polyaspartic ester resin is one or more of F2850, F221, F321 and Desmophen NH 2886.
6. The graphene-modified polyaspartate zinc-containing coating of claim 1, 2, or 3, wherein: the anti-settling agent in the component A is one or more of Bentone 828, R-972 and BYK-410; the dispersing agent is one or more of BYK-163, TEGO-670 and AFCONA 4071; the leveling agent is one or more of polyether modified polydimethylsiloxane, acrylate copolymer or fluorocarbon polymer; the particle sizes of the spherical zinc powder and the ferrophosphorus powder in the antirust pigment are both 800-1200 meshes; the isocyanate in the component B is one or more of hexamethylene diisocyanate tripolymer or uretdione; the organic solvent in the component A and the component B is one or more of dehydrated xylene, dehydrated butyl acetate, dehydrated ethyl acetate or propylene glycol methyl ether acetate.
7. A preparation method of a graphene modified polyaspartic acid ester zinc-containing coating is characterized by comprising the following steps:
(1) preparation of the component A: uniformly mixing and stirring 140-200 parts of high-solid-content low-viscosity polyaspartic ester resin, 50-90 parts of organic solvent and 8-15 parts of dispersing agent to form a clear solution, adding graphene in a stirring state, dispersing, and then sequentially adding 280-320 parts of antirust pigment, 390-410 parts of spherical zinc powder, 20-40 parts of flaky zinc powder, 2-5 parts of flatting agent and 5-10 parts of anti-settling agent, and dispersing at a high speed to obtain the anti-settling agent;
(2) preparation of the component B: when the component B contains an organic solvent, mixing the isocyanate and the organic solvent uniformly to obtain the product;
(3) when the composition is used, the component A obtained in the step (1) and the component B obtained in the step (2) are mixed according to the mass ratio of 9-11: 1, and the composition is obtained.
8. The preparation method of the graphene-modified polyaspartate zinc-containing coating according to claim 8, wherein the preparation method comprises the following steps: in the step (1), after the graphene is added, dispersing at a speed of 800-1200 r/min for 15-20 min; after all the components are added, the components are dispersed at high speed, the dispersion speed is 1500-2000 r/min, the dispersion time is 30-60 min, and the components are dispersed until the fineness is less than or equal to 40 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075652.3A CN112143360A (en) | 2020-10-10 | 2020-10-10 | Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075652.3A CN112143360A (en) | 2020-10-10 | 2020-10-10 | Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112143360A true CN112143360A (en) | 2020-12-29 |
Family
ID=73952743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011075652.3A Pending CN112143360A (en) | 2020-10-10 | 2020-10-10 | Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112143360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908581A (en) * | 2022-05-07 | 2022-08-16 | 常州佳尔科仿真器材有限公司 | Coating for PVC sandwich mesh cloth and preparation method thereof |
| CN114989706A (en) * | 2022-03-02 | 2022-09-02 | 深圳市精彩科技有限公司 | Polyurea coating and preparation method thereof |
| CN116396676A (en) * | 2023-04-24 | 2023-07-07 | 贵州航天风华精密设备有限公司 | Graphene high-hardness heavy-duty anticorrosive paint and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6169141B1 (en) * | 1998-05-22 | 2001-01-02 | Bayer Aktiengsellschaft | Two-component polyurethane coating composition with anti-corrosive properties |
| CN104530944A (en) * | 2014-12-26 | 2015-04-22 | 成都拜迪新材料有限公司 | Preparation method of ultrahigh-solid-content super-fast-drying anticorrosion primer |
| CN111662623A (en) * | 2020-07-17 | 2020-09-15 | 青岛爱尔家佳新材料股份有限公司 | Nano modified polyaspartic acid ester polyurea heavy-duty anticorrosive coating and preparation method thereof |
-
2020
- 2020-10-10 CN CN202011075652.3A patent/CN112143360A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6169141B1 (en) * | 1998-05-22 | 2001-01-02 | Bayer Aktiengsellschaft | Two-component polyurethane coating composition with anti-corrosive properties |
| CN104530944A (en) * | 2014-12-26 | 2015-04-22 | 成都拜迪新材料有限公司 | Preparation method of ultrahigh-solid-content super-fast-drying anticorrosion primer |
| CN111662623A (en) * | 2020-07-17 | 2020-09-15 | 青岛爱尔家佳新材料股份有限公司 | Nano modified polyaspartic acid ester polyurea heavy-duty anticorrosive coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 方志刚，刘斌: "《潜艇结构腐蚀防护》", 31 May 2017, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989706A (en) * | 2022-03-02 | 2022-09-02 | 深圳市精彩科技有限公司 | Polyurea coating and preparation method thereof |
| CN114989706B (en) * | 2022-03-02 | 2024-02-09 | 深圳市精彩科技有限公司 | Polyurea coating and preparation method thereof |
| CN114908581A (en) * | 2022-05-07 | 2022-08-16 | 常州佳尔科仿真器材有限公司 | Coating for PVC sandwich mesh cloth and preparation method thereof |
| CN116396676A (en) * | 2023-04-24 | 2023-07-07 | 贵州航天风华精密设备有限公司 | Graphene high-hardness heavy-duty anticorrosive paint and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112143360A (en) | Graphene modified polyaspartic acid ester zinc-containing coating and preparation method thereof | |
| CN101747825B (en) | Environment-friendly solvent-free humidified and rusted anticorrosive paint | |
| CN102108245B (en) | Waterborne polyester modified epoxy polyurethane anticorrosive paint and preparation method thereof | |
| CN103725159B (en) | A kind of high-adaptability protective system and preparation method thereof | |
| CN104098996B (en) | A kind of nano compound polyurethane aircraft coating and preparation method thereof | |
| CN102732130A (en) | High solid anticorrosive paint and preparation method thereof | |
| CN109181486B (en) | Low-VOC epoxy primer and preparation method thereof | |
| CN103602183A (en) | Fast-curing indentation-proof water-based paint for galvanized sheet and preparation method thereof | |
| CN107446476B (en) | Special primer-topcoat polyurea protective coating for automobile chassis system and preparation method thereof | |
| CN111171681B (en) | Graphene fluorine modified epoxy self-layering powder coating and preparation method thereof | |
| CN113045955B (en) | Low-surface-treatment heavy-duty anticorrosive paint and preparation method and application thereof | |
| CN103351787A (en) | High-performance rust inhibiting primer for low surface treatment of mechanical equipment and preparation method of high-performance rust inhibiting primer | |
| CN102417780A (en) | Anti-drag wear-resistant solvent-free coating with low-viscosity for pipeline | |
| CN114410221B (en) | Preparation method of low-temperature curing environment-friendly water-based chromium-free zinc-aluminum coating | |
| CN103045049A (en) | Waterborne epoxy anticorrosive coating and preparation method thereof | |
| CN108329793B (en) | Graphene modified anti-rust pigment anti-corrosion primer and preparation method thereof | |
| CN112708337A (en) | Water-based two-component polyurethane primer-topcoat coating and preparation method thereof | |
| CN105385296A (en) | Ship hull rust-proof two-component epoxy coating | |
| CN103555121A (en) | Water-based antiseptic paint for automotive chassis and preparation method thereof | |
| CN101629045A (en) | High solid metal inner cavity anticorrosive paint and production method thereof | |
| CN110343443A (en) | A kind of graphene coating and preparation method thereof | |
| CN114085596B (en) | Fusion bonding epoxy powder coating and application thereof in low-surface treatment of rusty steel pipe | |
| CN113667386A (en) | Powder coating with two coating layers and one baking layer and preparation method thereof | |
| CN106867357B (en) | A kind of nanometer modified high-solid body divides epoxy primer | |
| CN103305096A (en) | Multifunctional undercoat and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201229 |