CN110408308B - Graphene heavy-duty anticorrosive paint and preparation method thereof - Google Patents
Graphene heavy-duty anticorrosive paint and preparation method thereof Download PDFInfo
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- CN110408308B CN110408308B CN201910764693.4A CN201910764693A CN110408308B CN 110408308 B CN110408308 B CN 110408308B CN 201910764693 A CN201910764693 A CN 201910764693A CN 110408308 B CN110408308 B CN 110408308B
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a graphene heavy-duty anticorrosive paint which comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 45-57 parts of epoxy resin, 12-17 parts of organic silicon modified epoxy resin, 22-28 parts of phenolic resin, 14-18 parts of alkyd resin, 5-10 parts of zinc powder, 3-5 parts of graphene, 0.7-1.2 parts of flatting agent, 0.8-1.3 parts of defoaming agent, 1.5-2.4 parts of dispersing agent and 75-105 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 1-25 nm; the component B comprises the following raw materials in parts by weight: 0.8-1.2 parts of curing agent and 0.5-0.7 part of accelerator. The graphene heavy-duty anticorrosive coating disclosed by the invention has excellent corrosion resistance; and has excellent wear resistance.
Description
Technical Field
The invention relates to the field of coatings, and particularly relates to a graphene heavy-duty anticorrosive coating and a preparation method thereof.
Background
Heavy anti-corrosion coating: the anticorrosive paint can be applied in a relatively harsh corrosive environment compared with the conventional anticorrosive paint, and has a longer protection period than the conventional anticorrosive paint. The heavy anti-corrosion coating is mainly different from the conventional anti-corrosion coating in the technical content and the technical difficulty, relates to technical progress and product development in many aspects, does not depend on knowledge and experience of the coating excessively, but depends on knowledge and intersection of multiple subjects such as electronics, physics, ecology, machinery, instruments, management and the like, synthesis of high-corrosion-resistant resin, application of efficient dispersing agent and rheological additive, development of novel anti-corrosion and anti-permeability pigment and filler, application of advanced construction tool, construction maintenance technology, field detection technology and the like, and all need to be applied to the heavy anti-corrosion coating and coating comprehensively.
The heavy anti-corrosion coating has the product characteristics that:
the heavy-duty anticorrosive coating can be used under severe conditions and has long-acting anticorrosive service life, the heavy-duty anticorrosive coating can be used for more than 10 years or 15 years generally in chemical industry atmosphere and marine environment, and can be used for more than 5 years even in acid, alkali, salt and solvent media under certain temperature conditions.
Secondly, the thick film is an important mark of the heavy-duty anticorrosive paint. The dry film thickness of the coating of the general anticorrosive paint is about 100 μm or 150 μm, while the dry film thickness of the heavy anticorrosive paint is more than 200 μm or 300 μm, and also 500 μm to 1000 μm, even as high as 2000 μm.
The application fields of the heavy-duty anticorrosive paint comprise:
the novel ocean engineering comprises the following steps: offshore facilities, coastal and bay structures, offshore oil platforms;
modern transportation: highway guardrails, bridges, boats, containers, trains and railway facilities, automobiles and airport facilities;
③ energy industry: hydraulic equipment, a water tank, petroleum refining equipment, petroleum storage equipment (oil pipes and oil tanks), power transmission and transformation equipment, nuclear power and coal mines;
fourthly, large-scale industrial enterprises: paper making equipment, medical equipment, food chemical equipment, inner and outer walls of metal containers, chemical engineering, steel and petrochemical plant pipelines, storage tanks, mine smelting, cement plant equipment, ground and wall cement components with corrosive media;
municipal facilities: gas pipelines and facilities thereof (such as gas tanks), natural gas pipelines, drinking water facilities, garbage treatment equipment and the like.
The graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a revolutionary material in the future.
However, the heavy-duty anticorrosive coatings currently used still have the following problems:
1. the corrosion resistance is poor;
2. the wear resistance is poor.
Based on the situation, the invention provides the graphene heavy-duty anticorrosive coating and the preparation method thereof, and the problems can be effectively solved.
Disclosure of Invention
The invention aims to provide a graphene heavy-duty anticorrosive paint and a preparation method thereof. The graphene heavy-duty anticorrosive coating is prepared by selecting raw materials, optimizing the content of each raw material, and selecting epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder (serving as a sacrificial anode), graphene, a leveling agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent in a proper ratio, so that the advantages of the graphene heavy-duty anticorrosive coating are fully exerted, the graphene heavy-duty anticorrosive coating is mutually supplemented and mutually promoted, and the prepared graphene heavy-duty anticorrosive coating has excellent corrosion resistance; and has excellent wear resistance.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a graphene heavy-duty anticorrosive paint comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 45-57 parts of epoxy resin, 12-17 parts of organic silicon modified epoxy resin, 22-28 parts of phenolic resin, 14-18 parts of alkyd resin, 5-10 parts of zinc powder, 3-5 parts of graphene, 0.7-1.2 parts of flatting agent, 0.8-1.3 parts of defoaming agent, 1.5-2.4 parts of dispersing agent and 75-105 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 1-25 nm;
the component B comprises the following raw materials in parts by weight: 0.8-1.2 parts of curing agent and 0.5-0.7 part of accelerator.
The graphene heavy-duty anticorrosive coating is prepared by selecting raw materials, optimizing the content of each raw material, and selecting epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder (serving as a sacrificial anode), graphene, a leveling agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent in a proper ratio, so that the advantages of the graphene heavy-duty anticorrosive coating are fully exerted, the graphene heavy-duty anticorrosive coating is mutually supplemented and mutually promoted, and the prepared graphene heavy-duty anticorrosive coating has excellent corrosion resistance; and has excellent wear resistance.
The graphene heavy anti-corrosion coating is prepared by adding graphene (nano graphene nanoplatelets) with a proper proportion into raw materials of the graphene heavy anti-corrosion coating, wherein the thickness of the nano graphene nanoplatelets is 40-60 n, the graphene heavy anti-corrosion coating is uniformly dispersed in a raw material system of the graphene heavy anti-corrosion coating and is matched with other components, so that a good synergistic effect is achieved, and the corrosion resistance of the graphene heavy anti-corrosion coating is greatly improved; meanwhile, the wear resistance of the graphene heavy-duty anticorrosive coating is improved to a certain extent.
According to the graphene heavy-duty anticorrosive coating, the organic silicon modified epoxy resin is added into the raw materials in a proper proportion, so that the compatibility in the raw material system of the graphene heavy-duty anticorrosive coating is good, the raw material system of the graphene heavy-duty anticorrosive coating is matched with other components, a good synergistic effect is achieved, and the wear resistance of the graphene heavy-duty anticorrosive coating is greatly improved; meanwhile, the corrosion resistance of the graphene heavy-duty anticorrosive coating is improved to a certain extent.
The raw materials of the graphene heavy-duty anticorrosive coating are added with the phenolic resin in a proper proportion, so that the compatibility of the raw materials of the graphene heavy-duty anticorrosive coating is good, the raw materials are matched with other components, a good synergistic effect is achieved, and the corrosion resistance of the graphene heavy-duty anticorrosive coating is further improved.
Preferably, the component A comprises the following raw materials in parts by weight: 52 parts of epoxy resin, 15.5 parts of organic silicon modified epoxy resin, 25 parts of phenolic resin, 16 parts of alkyd resin, 7.5 parts of zinc powder, 3.1 parts of graphene, 0.9 part of flatting agent, 1.05 parts of defoaming agent, 2.1 parts of dispersing agent and 90 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 2-10 nm. The component B comprises the following raw materials in parts by weight: 1 part of curing agent and 0.62 part of accelerator.
Preferably, the leveling agent is polyether modified silicon organic silicon.
Preferably, the defoamer is polydimethylsiloxane.
Preferably, the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis stearamide.
Preferably, the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.25 to 1.45.
Preferably, the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
Preferably, the accelerator is any one or two of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
Preferably, the mixed solvent is a mixture of 1: 0.75-0.85 of a mixture of methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the graphene heavy-duty anticorrosive paint, which comprises the following steps:
1) weighing the following components in parts by weight: epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder, graphene, a flatting agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent;
2) preparing a component A:
3) b1, adding epoxy resin, organic silicon modified epoxy resin, phenolic resin and alkyd resin into the mixed solvent, and stirring at the rotating speed of 500-800 r/min for 40-50 min;
4) b2, adding graphene, a leveling agent, a defoaming agent and a dispersing agent, and shearing and dispersing at the rotating speed of 1500-2000 r/min for 10-15 to obtain a component A;
5) preparing a component B: mixing the curing agent and the accelerator to obtain a component B;
when the step is used, the component A and the component B are mixed uniformly and then can be used.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the graphene heavy-duty anticorrosive coating is prepared by selecting raw materials, optimizing the content of each raw material, and selecting epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder (serving as a sacrificial anode), graphene, a leveling agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent in a proper ratio, so that the advantages of the graphene heavy-duty anticorrosive coating are fully exerted, the graphene heavy-duty anticorrosive coating is mutually supplemented and mutually promoted, and the prepared graphene heavy-duty anticorrosive coating has excellent corrosion resistance; and has excellent wear resistance.
The graphene heavy anti-corrosion coating is prepared by adding graphene (nano graphene nanoplatelets) with a proper proportion into raw materials of the graphene heavy anti-corrosion coating, wherein the thickness of the nano graphene nanoplatelets is 40-60 n, the graphene heavy anti-corrosion coating is uniformly dispersed in a raw material system of the graphene heavy anti-corrosion coating and is matched with other components, so that a good synergistic effect is achieved, and the corrosion resistance of the graphene heavy anti-corrosion coating is greatly improved; meanwhile, the wear resistance of the graphene heavy-duty anticorrosive coating is improved to a certain extent.
According to the graphene heavy-duty anticorrosive coating, the organic silicon modified epoxy resin is added into the raw materials in a proper proportion, so that the compatibility in the raw material system of the graphene heavy-duty anticorrosive coating is good, the raw material system of the graphene heavy-duty anticorrosive coating is matched with other components, a good synergistic effect is achieved, and the wear resistance of the graphene heavy-duty anticorrosive coating is greatly improved; meanwhile, the corrosion resistance of the graphene heavy-duty anticorrosive coating is improved to a certain extent.
The raw materials of the graphene heavy-duty anticorrosive coating are added with the phenolic resin in a proper proportion, so that the compatibility of the raw materials of the graphene heavy-duty anticorrosive coating is good, the raw materials are matched with other components, a good synergistic effect is achieved, and the corrosion resistance of the graphene heavy-duty anticorrosive coating is further improved.
The preparation method has simple process and simple and convenient operation, and saves manpower and equipment cost.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1:
a graphene heavy-duty anticorrosive paint comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 45-57 parts of epoxy resin, 12-17 parts of organic silicon modified epoxy resin, 22-28 parts of phenolic resin, 14-18 parts of alkyd resin, 5-10 parts of zinc powder, 3-5 parts of graphene, 0.7-1.2 parts of flatting agent, 0.8-1.3 parts of defoaming agent, 1.5-2.4 parts of dispersing agent and 75-105 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 1-25 nm;
the component B comprises the following raw materials in parts by weight: 0.8-1.2 parts of curing agent and 0.5-0.7 part of accelerator.
Preferably, the component A comprises the following raw materials in parts by weight: 52 parts of epoxy resin, 15.5 parts of organic silicon modified epoxy resin, 25 parts of phenolic resin, 16 parts of alkyd resin, 7.5 parts of zinc powder, 3.1 parts of graphene, 0.9 part of flatting agent, 1.05 parts of defoaming agent, 2.1 parts of dispersing agent and 90 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 2-10 nm. The component B comprises the following raw materials in parts by weight: 1 part of curing agent and 0.62 part of accelerator.
Preferably, the leveling agent is polyether modified silicon organic silicon.
Preferably, the defoamer is polydimethylsiloxane.
Preferably, the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis stearamide.
Preferably, the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.25 to 1.45.
Preferably, the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
Preferably, the accelerator is any one or two of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
Preferably, the mixed solvent is a mixture of 1: 0.75-0.85 of a mixture of methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the graphene heavy-duty anticorrosive paint, which comprises the following steps:
1) weighing the following components in parts by weight: epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder, graphene, a flatting agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent;
2) preparing a component A:
3) b1, adding epoxy resin, organic silicon modified epoxy resin, phenolic resin and alkyd resin into the mixed solvent, and stirring at the rotating speed of 500-800 r/min for 40-50 min;
4) b2, adding graphene, a leveling agent, a defoaming agent and a dispersing agent, and shearing and dispersing at the rotating speed of 1500-2000 r/min for 10-15 to obtain a component A;
5) preparing a component B: mixing the curing agent and the accelerator to obtain a component B;
when the step is used, the component A and the component B are mixed uniformly and then can be used.
Example 2:
a graphene heavy-duty anticorrosive paint comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 12 parts of organic silicon modified epoxy resin, 22 parts of phenolic resin, 14 parts of alkyd resin, 5 parts of zinc powder, 3 parts of graphene, 0.7 part of flatting agent, 0.8 part of defoaming agent, 1.5 parts of dispersing agent and 75 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 1-15 nm;
the component B comprises the following raw materials in parts by weight: 0.8 part of curing agent and 0.5 part of accelerator.
Preferably, the leveling agent is polyether modified silicon organic silicon.
Preferably, the defoamer is polydimethylsiloxane.
Preferably, the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis stearamide.
Preferably, the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.25.
preferably, the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
Preferably, the accelerator is any one or two of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
Preferably, the mixed solvent is a mixture of 1: 0.75 of a mixture of methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the graphene heavy-duty anticorrosive paint, which comprises the following steps:
1) weighing the following components in parts by weight: epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder, graphene, a flatting agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent;
2) preparing a component A:
3) b1, adding epoxy resin, organic silicon modified epoxy resin, phenolic resin and alkyd resin into the mixed solvent, and stirring at the rotating speed of 500r/min for 50 min;
4) b2, adding graphene, a leveling agent, a defoaming agent and a dispersing agent, and shearing and dispersing at the rotating speed of 1500r/min for 15min to obtain a component A;
5) preparing a component B: mixing the curing agent and the accelerator to obtain a component B;
when the step is used, the component A and the component B are mixed uniformly and then can be used.
Example 3:
a graphene heavy-duty anticorrosive paint comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 57 parts of epoxy resin, 17 parts of organic silicon modified epoxy resin, 28 parts of phenolic resin, 18 parts of alkyd resin, 10 parts of zinc powder, 5 parts of graphene, 1.2 parts of flatting agent, 1.3 parts of defoaming agent, 2.4 parts of dispersing agent and 105 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 15-25 nm;
the component B comprises the following raw materials in parts by weight: 1.2 parts of curing agent and 0.7 part of accelerator.
Preferably, the leveling agent is polyether modified silicon organic silicon.
Preferably, the defoamer is polydimethylsiloxane.
Preferably, the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis stearamide.
Preferably, the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.45.
preferably, the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
Preferably, the accelerator is any one or two of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
Preferably, the mixed solvent is a mixture of 1: 0.85 of a mixture of methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the graphene heavy-duty anticorrosive paint, which comprises the following steps:
1) weighing the following components in parts by weight: epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder, graphene, a flatting agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent;
2) preparing a component A:
3) b1, adding epoxy resin, organic silicon modified epoxy resin, phenolic resin and alkyd resin into the mixed solvent, and stirring at the rotating speed of 800r/min for 40 min;
4) b2, adding graphene, a leveling agent, a defoaming agent and a dispersing agent, and shearing and dispersing at the rotating speed of 2000r/min for 10min to obtain a component A;
5) preparing a component B: mixing the curing agent and the accelerator to obtain a component B;
when the step is used, the component A and the component B are mixed uniformly and then can be used.
Example 4:
a graphene heavy-duty anticorrosive paint comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 52 parts of epoxy resin, 15.5 parts of organic silicon modified epoxy resin, 25 parts of phenolic resin, 16 parts of alkyd resin, 7.5 parts of zinc powder, 3.1 parts of graphene, 0.9 part of flatting agent, 1.05 parts of defoaming agent, 2.1 parts of dispersing agent and 90 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 2-10 nm. The component B comprises the following raw materials in parts by weight: 1 part of curing agent and 0.62 part of accelerator.
Preferably, the leveling agent is polyether modified silicon organic silicon.
Preferably, the defoamer is polydimethylsiloxane.
Preferably, the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis stearamide.
Preferably, the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.36.
preferably, the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
Preferably, the accelerator is any one or two of imidazole, dimethyl imidazole, diphenyl imidazole and salicylic acid.
Preferably, the mixed solvent is a mixture of 1: 0.81 parts of a mixture of methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the graphene heavy-duty anticorrosive paint, which comprises the following steps:
1) weighing the following components in parts by weight: epoxy resin, organic silicon modified epoxy resin, phenolic resin, alkyd resin, zinc powder, graphene, a flatting agent, a defoaming agent, a dispersing agent, a mixed solvent, a curing agent and an accelerating agent;
2) preparing a component A:
3) b1, adding epoxy resin, organic silicon modified epoxy resin, phenolic resin and alkyd resin into the mixed solvent, and stirring for 45min at the rotating speed of 650 r/min;
4) b2, adding graphene, a leveling agent, a defoaming agent and a dispersing agent, and shearing and dispersing at the rotating speed of 1800r/min for 12min to obtain a component A;
5) preparing a component B: mixing the curing agent and the accelerator to obtain a component B;
when the step is used, the component A and the component B are mixed uniformly and then can be used.
Comparative example 1:
the difference from example 4 is that graphene is absent, and the others are the same as example 4.
Comparative example 2:
the difference from example 4 is that graphene powder was used instead of nanographene nanoplatelets, and the other steps are the same as example 4.
Comparative example 3:
the graphene nanoplatelets are different from the embodiment 4 in that the thickness of the graphene nanoplatelets is 40-60 nm, and the rest is the same as the embodiment 4.
Comparative example 4:
the difference from example 4 is that no silicone-modified epoxy resin is present, and the rest is the same as example 4.
Comparative example 5:
the difference from example 4 is that no phenolic resin is present, and the other is the same as example 4.
The graphene heavy anti-corrosive paint and the common anti-corrosive paint obtained in the examples 2 to 4 and the comparative examples 1 to 5 of the present invention were subjected to the following performance tests, and the test results are shown in table 1:
wear resistance: the test was carried out according to the method shown in ASTM D4060, grinding wheel CS-17, load 1000 g.
Salt spray resistance: the test was carried out according to the method shown in ASTM B117.
TABLE 1
As can be seen from the above table, the graphene heavy-duty anticorrosive coating of the present invention has the following advantages: the corrosion resistance is excellent; and has excellent wear resistance.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (9)
1. The graphene heavy-duty anticorrosive paint is characterized by comprising a component A and a component B; the component A comprises the following raw materials in parts by weight: 45-57 parts of epoxy resin, 12-17 parts of organic silicon modified epoxy resin, 22-28 parts of phenolic resin, 14-18 parts of alkyd resin, 5-10 parts of zinc powder, 3-5 parts of graphene, 0.7-1.2 parts of flatting agent, 0.8-1.3 parts of defoaming agent, 1.5-2.4 parts of dispersing agent and 75-105 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 1-25 nm;
the component B comprises the following raw materials in parts by weight: 0.8-1.2 parts of curing agent and 0.5-0.7 part of accelerator.
2. The graphene heavy-duty anticorrosive paint according to claim 1, wherein the component A comprises the following raw materials in parts by weight: 52 parts of epoxy resin, 15.5 parts of organic silicon modified epoxy resin, 25 parts of phenolic resin, 16 parts of alkyd resin, 7.5 parts of zinc powder, 3.1 parts of graphene, 0.9 part of flatting agent, 1.05 parts of defoaming agent, 2.1 parts of dispersing agent and 90 parts of mixed solvent; the graphene is a nano graphene microchip; the thickness of the nano graphene microchip is 2-10 nm; the component B comprises the following raw materials in parts by weight: 1 part of curing agent and 0.62 part of accelerator.
3. The graphene heavy-duty anticorrosive paint according to claim 1, wherein the leveling agent is polyether-modified silicon silicone.
4. The graphene heavy-duty anticorrosive coating according to claim 1, wherein the defoaming agent is polydimethylsiloxane.
5. The graphene heavy-duty anticorrosive coating according to claim 1, wherein the dispersant is a mixture of polyvinylpyrrolidone and vinyl bis-stearamide.
6. The graphene heavy-duty anticorrosive paint according to claim 5, wherein the mass ratio of the polyvinylpyrrolidone to the vinyl bis-stearamide in the mixture of the polyvinylpyrrolidone and the vinyl bis-stearamide is 1: 1.25 to 1.45.
7. The graphene heavy-duty anticorrosive paint according to claim 1, wherein the curing agent is any one or two of dicyandiamide, acid anhydride, organic acid and polyamide.
8. The graphene heavy-duty anticorrosive coating according to claim 1, wherein the accelerator is one or two of imidazole, dimethylimidazole, diphenylimidazole, and salicylic acid.
9. The graphene heavy-duty anticorrosive paint according to claim 1, wherein the mixed solvent is a mixed solvent prepared from a mixed solvent of 1: 0.75-0.85 of a mixture of methyl ethyl ketone and butyl acetate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910764693.4A CN110408308B (en) | 2019-08-19 | 2019-08-19 | Graphene heavy-duty anticorrosive paint and preparation method thereof |
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| CN110760242A (en) * | 2019-11-12 | 2020-02-07 | 安徽阜南县向发工艺品有限公司 | Preparation method of corrosion-resistant paint for wood products |
| CN111171700B (en) * | 2020-01-16 | 2021-09-07 | 骋润(嘉兴)新材料科技有限公司 | Anticorrosive coating and coating process thereof |
| CN111471372A (en) * | 2020-05-15 | 2020-07-31 | 晋江市中德顺钢结构件工程发展有限公司 | Corrosion-resistant counterweight block casting and manufacturing method thereof |
| CN113698846A (en) * | 2021-09-07 | 2021-11-26 | 江苏冠军科技集团股份有限公司 | Hyperbranched epoxy zinc-rich coating and preparation method thereof |
| FR3131322A1 (en) * | 2021-12-29 | 2023-06-30 | Kemica Coatings | Resins intended for food contact |
| CN114262555B (en) * | 2022-01-17 | 2022-09-27 | 江苏冠军科技集团股份有限公司 | Sulfanilamide-silver compound doped graphene zinc powder heavy-duty anticorrosive coating and preparation method thereof |
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| CN104371500A (en) * | 2014-11-24 | 2015-02-25 | 张家港保税区冠祥贸易有限公司 | High-corrosion-resistance metal anti-corrosive paint and preparation method thereof |
| CN107216768A (en) * | 2017-05-31 | 2017-09-29 | 广州希森美克新材料科技有限公司 | A kind of ultrathin nanometer type anticorrosive paint and its Self-leveling dipping process |
| CN107916047A (en) * | 2017-12-14 | 2018-04-17 | 深圳市国创珈伟石墨烯科技有限公司 | Graphene anticorrosive paint and preparation method |
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