CN111171698B - Anticorrosive coating with good lubricating property and coating process thereof - Google Patents
Anticorrosive coating with good lubricating property and coating process thereof Download PDFInfo
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- CN111171698B CN111171698B CN202010045014.0A CN202010045014A CN111171698B CN 111171698 B CN111171698 B CN 111171698B CN 202010045014 A CN202010045014 A CN 202010045014A CN 111171698 B CN111171698 B CN 111171698B
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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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
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/22—Silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/28—Metals
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- 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
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- 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
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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- Lubricants (AREA)
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Abstract
The invention discloses an anticorrosive coating with good lubricating property, which comprises the following raw materials in parts by weight: 75-85 parts of water-based bi-component polyurethane, 18-25 parts of 2-acrylamide and 1-vinyl-2-pyrrolidone polymer, 12-16 parts of water-soluble phenolic resin, 4-6 parts of nano metal particles, 6-8 parts of a mixture of nano graphite and molybdenum disulfide, 2-3 parts of nano silicon dioxide, 3-5 parts of a dispersing agent, 1-1.5 parts of a defoaming agent and 0.8-1.3 parts of a leveling agent; the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.2 to 0.4. The anticorrosive coating with good lubricating property has the advantages that the static friction coefficient is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the anticorrosive coating has good lubricating property; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent; in addition, the combination property is excellent.
Description
Technical Field
The invention relates to the technical field of paint and coating thereof, in particular to an anticorrosive coating with good lubricating property and a coating process thereof.
Background
Coating is a solid continuous film obtained by one-time coating, and is a thin layer of plastic applied to a substrate of metal, fabric, plastic, etc. for the purpose of protection, insulation, decoration, etc. The coating material can be in a gas state, a liquid state or a solid state, and the type and the state of the coating material are generally determined according to the substrate needing to be sprayed.
Water is the most characteristic of the water-based paint to replace an organic solvent or a dispersion medium. Therefore, the water-based paint can save a large amount of petroleum resources and greatly reduce the pollution of the volatilization of the organic solvent in the paint to the atmosphere. The waterborne polyurethane coating is one of waterborne coatings, and the characteristics of excellent wear resistance, excellent chemical and oil resistance, high-temperature and low-temperature curing resistance, non-toxicity after coating curing and the like of the polyurethane coating are integrated on the basis of the advantages, so that the waterborne polyurethane coating is called as a typical environment-friendly low-VOC coating. However, compared with the conventional solvent type polyurethane coating, the coating has the disadvantages of poor water resistance, low mechanical strength, and insufficient aging resistance and thermal stability.
Based on the situation, the invention provides the anticorrosive coating with good lubricating property and the coating process thereof, which can effectively solve the problems.
Disclosure of Invention
The invention aims to provide an anticorrosive coating with good lubricating property and a coating process thereof. The anticorrosive coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, and selecting proper proportions of aqueous bi-component polyurethane, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer, water-soluble phenolic resin, nano metal particles, a mixture of nano graphite and molybdenum disulfide and nano silicon dioxide, so that the advantages of the respective raw materials are fully exerted, the nano graphite and molybdenum disulfide mixture are mutually supplemented and promoted, the static friction coefficient of the prepared anticorrosive coating with good lubricating property is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the anticorrosive coating has good lubricating property; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent; in addition, the combination property is excellent.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an anticorrosive coating with good lubricating property comprises the following raw materials in parts by weight:
75-85 parts of water-based bi-component polyurethane,
18-25 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12-16 parts of water-soluble phenolic resin,
4-6 parts of nano metal particles,
6-8 parts of a mixture of nano graphite and molybdenum disulfide,
2-3 parts of nano silicon dioxide,
3-5 parts of a dispersing agent, 1-1.5 parts of a defoaming agent and 0.8-1.3 parts of a flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.2 to 0.4.
The anticorrosive coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, and selecting proper proportions of aqueous bi-component polyurethane, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer, water-soluble phenolic resin, nano metal particles, a mixture of nano graphite and molybdenum disulfide and nano silicon dioxide, so that the advantages of the respective raw materials are fully exerted, the nano graphite and molybdenum disulfide mixture are mutually supplemented and promoted, the static friction coefficient of the prepared anticorrosive coating with good lubricating property is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the anticorrosive coating has good lubricating property; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent; in addition, the combination property is excellent.
Preferably, the anticorrosive coating comprises the following raw materials in parts by weight:
80 parts of water-based bi-component polyurethane,
21.5 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
14 parts of water-soluble phenolic resin,
5 parts of nano metal particles,
7 portions of the mixture of nano graphite and molybdenum disulfide,
2.5 parts of nano silicon dioxide,
4 parts of dispersing agent, 1.25 parts of defoaming agent and 1.05 parts of flatting agent;
preferably, the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.28.
preferably, the waterborne two-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: (45-55): (1-3).
Preferably, the waterborne two-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: 50: 2.
preferably, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation.
Preferably, the nano metal particles are nano zinc.
Preferably, the dispersant is nano dispersant ECO-2500.
Preferably, the antifoaming agent is LD-02.
Preferably, the leveling agent is LD-108A.
The invention also provides a coating process of the anticorrosive coating with good lubricating property, which comprises the following steps:
1) weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
2) mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
3) and (3) coating the coating obtained in the step 2) on the surface of a base material in a spraying manner, wherein the spraying thickness is 50-150 mu m, curing is carried out for more than 4h at the temperature of 50-65 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the anticorrosive coating with good lubricating property.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the anticorrosive coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, and selecting proper proportions of aqueous bi-component polyurethane, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer, water-soluble phenolic resin, nano metal particles, a mixture of nano graphite and molybdenum disulfide and nano silicon dioxide, so that the advantages of the respective raw materials are fully exerted, the nano graphite and molybdenum disulfide mixture are mutually supplemented and promoted, the static friction coefficient of the prepared anticorrosive coating with good lubricating property is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the anticorrosive coating has good lubricating property; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent.
The raw materials of the anticorrosive coating with good lubricating property are added with waterborne bi-component polyurethane, preferably, the waterborne bi-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: (45-55): (1-3). Preferably, the waterborne two-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: 50: 2. more preferably, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation. Polyether type waterborne polyurethane is selected to provide good flexibility for the coating, and the mechanical strength is high; after the polyester waterborne polyurethane is added, the hardness and the thermal stability of the anticorrosive coating with good lubricating property are improved; after the Bayhydur XP 2655 aqueous polyisocyanate is added, the aqueous polyisocyanate can be rapidly and uniformly dispersed in the raw material system of the invention, and the water resistance of the anticorrosive coating with good lubricating property can be improved;
the raw materials of the anticorrosive coating with good lubricating property are added with the polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone, and the polymer has good equality with waterborne bi-component polyurethane and the like, so that the lubricating property of the anticorrosive coating with good lubricating property can be greatly improved;
the raw materials of the anticorrosive coating with good lubricating property are added with the mixture of the nano-graphite and the molybdenum disulfide, and the mass ratio of the nano-graphite to the molybdenum disulfide in the mixture of the nano-graphite and the molybdenum disulfide is 1: 0.2 to 0.4. Preferably, the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.28. the nano graphite and the molybdenum disulfide have a synergistic antifriction lubricating effect and have the lasting stability of the lubricating effect; the mass ratio of the two is 1: the friction coefficient is smaller than 0.2-0.4, and the synergistic effect is better; because the content of the molybdenum disulfide is too much, the molybdenum disulfide has obvious oxidation effect at higher temperature due to the heat generation effect of friction, MoO3 is generated by reaction, adhesion abrasion is generated, the friction coefficient is increased, and the lubricating effect is influenced; the graphite is too much, the wear resistance is poor, the graphite is easy to fall off and delaminate, and the durable antifriction and lubrication effects cannot be achieved.
The raw materials of the anticorrosive coating with good lubricating property are added with the nano metal particles; preferably, the nano metal particles are nano zinc. The nano zinc is added to be used as a sacrificial anode in the later-stage use process of the anticorrosive coating with good lubricating property, so that the anticorrosive coating with good lubricating property can be greatly protected, and the corrosion resistance is greatly improved;
the water-soluble phenolic resin is added into the raw materials of the anticorrosive coating with good lubricating property, and the raw materials of the anticorrosive coating with good lubricating property are matched with other components in the raw material system of the anticorrosive coating with good lubricating property, so that a good synergistic effect is achieved, the corrosion resistance of the anticorrosive coating with good lubricating property is further improved, and the hardness and the thermal stability of the anticorrosive coating with good lubricating property are improved;
the nano silicon dioxide is added into the raw materials of the anticorrosive coating with good lubricating property, and the raw materials of the anticorrosive coating with good lubricating property are matched with other components, so that a good synergistic effect is achieved, the compactness and hardness of the anticorrosive coating with good lubricating property can be greatly improved, and the corrosion resistance is improved;
the raw materials of the anticorrosive coating with good lubricating property are added with the dispersant; preferably, the dispersant is nano dispersant ECO-2500. The anti-corrosion coating with good lubricating property is added with the defoaming agent; preferably, the antifoaming agent is LD-02. The raw materials of the anticorrosive coating with good lubricating property are added with the leveling agent; preferably, the leveling agent is LD-108A. The additives are water-soluble additives, and particularly the nano dispersant ECO-2500 can well and uniformly disperse the nano metal particles, the mixture of the nano graphite and the molybdenum disulfide and the nano silicon dioxide in the raw material system of the anticorrosive coating with good lubricating property; the three additives are added and matched with each other to play a good synergistic effect, so that the good appearance of the anticorrosive coating with good lubricating property is ensured, and the anticorrosive coating with good lubricating property is ensured to have good lubricating property; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent; in short, the comprehensive performance is good.
The coating process of the invention 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:
an anticorrosive coating with good lubricating property comprises the following raw materials in parts by weight:
75-85 parts of water-based bi-component polyurethane,
18-25 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12-16 parts of water-soluble phenolic resin,
4-6 parts of nano metal particles,
6-8 parts of a mixture of nano graphite and molybdenum disulfide,
2-3 parts of nano silicon dioxide,
3-5 parts of a dispersing agent, 1-1.5 parts of a defoaming agent and 0.8-1.3 parts of a flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.2 to 0.4.
Preferably, the anticorrosive coating comprises the following raw materials in parts by weight:
80 parts of water-based bi-component polyurethane,
21.5 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
14 parts of water-soluble phenolic resin,
5 parts of nano metal particles,
7 portions of the mixture of nano graphite and molybdenum disulfide,
2.5 parts of nano silicon dioxide,
4 parts of dispersing agent, 1.25 parts of defoaming agent and 1.05 parts of flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.28.
preferably, the waterborne two-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: (45-55): (1-3).
Preferably, the waterborne two-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: 50: 2.
preferably, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation.
Preferably, the nano metal particles are nano zinc.
Preferably, the dispersant is nano dispersant ECO-2500.
Preferably, the antifoaming agent is LD-02.
Preferably, the leveling agent is LD-108A.
The invention also provides a coating process of the anticorrosive coating with good lubricating property, which comprises the following steps:
1) weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
2) mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
3) and (3) coating the coating obtained in the step 2) on the surface of a base material in a spraying manner, wherein the spraying thickness is 50-150 mu m, curing is carried out for more than 4h at the temperature of 50-65 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the anticorrosive coating with good lubricating property.
Example 2:
an anticorrosive coating with good lubricating property comprises the following raw materials in parts by weight:
75 parts of water-based bi-component polyurethane,
18 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12 portions of water-soluble phenolic resin,
4 parts of nano metal particles,
6 portions of mixture of nano graphite and molybdenum disulfide,
2 parts of nano silicon dioxide,
3 parts of dispersing agent, 1 part of defoaming agent and 0.8 part of flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.2.
in this embodiment, the aqueous two-component polyurethane includes polyether aqueous polyurethane, polyester aqueous polyurethane and aqueous polyisocyanate, wherein the mass ratio of the three is 50: 45: 1.
in this example, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation.
In this embodiment, the nano metal particles are nano zinc.
In this example, the dispersant is a nanodispersant, ECO-2500.
In this example, the defoamer was LD-02.
In this embodiment, the leveling agent is LD-108A.
In this embodiment, the coating process of the anticorrosive coating with good lubricating property includes the following steps:
1) weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
2) mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
3) and (3) coating the coating obtained in the step 2) on the surface of a base material in a spraying manner, wherein the spraying thickness is 120 microns, the coating is cured for more than 4 hours at 50 ℃ after spraying, and then the coating is cured for more than 12 hours at normal temperature, so that the anticorrosive coating with good lubricating property is obtained.
Example 3:
an anticorrosive coating with good lubricating property comprises the following raw materials in parts by weight:
85 portions of water-based bi-component polyurethane,
25 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
16 portions of water-soluble phenolic resin,
6 parts of nano metal particles,
8 portions of the mixture of the nano graphite and the molybdenum disulfide,
3 parts of nano silicon dioxide,
5 parts of dispersing agent, 1.5 parts of defoaming agent and 1.3 parts of flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.4.
in this embodiment, the aqueous two-component polyurethane includes polyether aqueous polyurethane, polyester aqueous polyurethane and aqueous polyisocyanate, wherein the mass ratio of the three is 50: 55: 3.
in this example, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation.
In this embodiment, the nano metal particles are nano zinc.
In this example, the dispersant is a nanodispersant, ECO-2500.
In this example, the defoamer was LD-02.
In this embodiment, the leveling agent is LD-108A.
In this embodiment, the coating process of the anticorrosive coating with good lubricating property includes the following steps:
1) weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
2) mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
3) and (3) coating the coating obtained in the step 2) on the surface of a base material in a spraying manner, wherein the spraying thickness is 120 microns, the coating is cured for more than 4 hours at the temperature of 65 ℃ after spraying, and then the coating is cured for more than 12 hours at normal temperature, so that the anticorrosive coating with good lubricating property is obtained.
Example 4:
an anticorrosive coating with good lubricating property comprises the following raw materials in parts by weight:
80 parts of water-based bi-component polyurethane,
21.5 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
14 parts of water-soluble phenolic resin,
5 parts of nano metal particles,
7 portions of the mixture of nano graphite and molybdenum disulfide,
2.5 parts of nano silicon dioxide,
4 parts of dispersing agent, 1.25 parts of defoaming agent and 1.05 parts of flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.28.
in this embodiment, the aqueous two-component polyurethane includes polyether aqueous polyurethane, polyester aqueous polyurethane and aqueous polyisocyanate, wherein the mass ratio of the three is 50: 50: 2.
in this example, the aqueous polyisocyanate is Bayhydur XP 2655, manufactured by kosta corporation.
In this embodiment, the nano metal particles are nano zinc.
In this example, the dispersant is a nanodispersant, ECO-2500.
In this example, the defoamer was LD-02.
In this embodiment, the leveling agent is LD-108A.
In this embodiment, the coating process of the anticorrosive coating with good lubricating property includes the following steps:
1) weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
2) mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
3) and (3) coating the coating obtained in the step 2) on the surface of a base material in a spraying manner, wherein the spraying thickness is 120 microns, curing is carried out for more than 4 hours at the temperature of 58 ℃ after spraying, and then curing is carried out for more than 12 hours at normal temperature, so as to obtain the anticorrosive coating with good lubricating property.
The following performance tests were performed on the anticorrosive coatings with good lubricating properties obtained in examples 2 to 4 of the present invention and the ordinary anticorrosive coatings (the thickness was the same as in example 4, and the coating process was the same as in example 4), 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, compared with the common anticorrosive coating, the anticorrosive coating with good lubricating property of the present invention has the following advantages: the static friction coefficient is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the lubricating property is good; in addition, the salt spray test can reach more than 10000h, and the corrosion resistance is excellent; the wear resistance is excellent.
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 (6)
1. The anticorrosive coating with good lubricating property is characterized by comprising the following raw materials in parts by weight:
75-85 parts of water-based bi-component polyurethane,
18-25 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12-16 parts of water-soluble phenolic resin,
4-6 parts of nano metal particles,
6-8 parts of a mixture of nano graphite and molybdenum disulfide,
2-3 parts of nano silicon dioxide,
3-5 parts of a dispersing agent, 1-1.5 parts of a defoaming agent and 0.8-1.3 parts of a flatting agent;
the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.2 to 0.4;
the waterborne bi-component polyurethane comprises polyether waterborne polyurethane, polyester waterborne polyurethane and waterborne polyisocyanate, wherein the mass ratio of the polyether waterborne polyurethane to the polyester waterborne polyurethane to the waterborne polyisocyanate is 50: (45-55): (1-3);
the nano metal particles are nano zinc.
2. The anticorrosive coating with good lubricating property according to claim 1, characterized by comprising the following raw materials in parts by weight:
80 parts of water-based bi-component polyurethane,
21.5 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
14 parts of water-soluble phenolic resin,
5 parts of nano metal particles,
7 portions of the mixture of nano graphite and molybdenum disulfide,
2.5 parts of nano silicon dioxide,
4 parts of dispersing agent, 1.25 parts of defoaming agent and 1.05 parts of flatting agent.
3. The anti-corrosion coating with good lubricating property as claimed in claim 2, wherein the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.28.
4. the anticorrosive coating with good lubricating property according to claim 1, wherein the aqueous bi-component polyurethane comprises polyether type aqueous polyurethane, polyester type aqueous polyurethane and aqueous polyisocyanate, and the mass ratio of the polyether type aqueous polyurethane to the polyester type aqueous polyurethane is 50: 50: 2.
5. the corrosion protective coating with good lubricating properties of claim 1, wherein the water-based polyisocyanate is Bayhydur XP 2655 manufactured by kostewa.
6. A coating process of the anticorrosive coating with good lubricating property according to any one of claims 1 to 4, characterized by comprising the following steps:
weighing the raw materials of the anticorrosive coating according to the parts by weight for later use;
mixing the raw materials of the anticorrosive coating with good lubricating property, uniformly mixing the raw materials by adopting high-speed dispersion, and adding water to adjust viscosity in the high-speed dispersion mixing process;
and (3) coating the obtained coating on the surface of a base material in a spraying manner, wherein the spraying thickness is 50-150 mu m, curing is carried out for more than 4h at the temperature of 50-65 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the anticorrosive coating with good lubricating property.
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| CN105860815A (en) * | 2016-04-22 | 2016-08-17 | 北京虹霞正升涂料有限责任公司 | Waterborne anti-static anti-corrosive thermal insulation coating and preparation method |
| CN107119213A (en) * | 2017-07-05 | 2017-09-01 | 合肥万之景门窗有限公司 | A kind of aluminium alloy extrusions and its preparation technology |
| CN108117830A (en) * | 2018-01-23 | 2018-06-05 | 成都德信安创新医疗技术有限公司 | A kind of aqueous hydrophilic lubrication coating |
| CN110628295A (en) * | 2018-06-22 | 2019-12-31 | 董瑛 | Anti-skid high-adhesion wear-resistant anticorrosive paint and preparation method thereof |
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| CN105860815A (en) * | 2016-04-22 | 2016-08-17 | 北京虹霞正升涂料有限责任公司 | Waterborne anti-static anti-corrosive thermal insulation coating and preparation method |
| CN107119213A (en) * | 2017-07-05 | 2017-09-01 | 合肥万之景门窗有限公司 | A kind of aluminium alloy extrusions and its preparation technology |
| CN108117830A (en) * | 2018-01-23 | 2018-06-05 | 成都德信安创新医疗技术有限公司 | A kind of aqueous hydrophilic lubrication coating |
| CN110628295A (en) * | 2018-06-22 | 2019-12-31 | 董瑛 | Anti-skid high-adhesion wear-resistant anticorrosive paint and preparation method thereof |
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