CN111234661B - Coating with good lubricating property and coating process thereof - Google Patents

Coating with good lubricating property and coating process thereof Download PDF

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Publication number
CN111234661B
CN111234661B CN202010045013.6A CN202010045013A CN111234661B CN 111234661 B CN111234661 B CN 111234661B CN 202010045013 A CN202010045013 A CN 202010045013A CN 111234661 B CN111234661 B CN 111234661B
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parts
coating
lubricating property
good lubricating
raw materials
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CN111234661A (en
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程立熙
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Chengrun Jiaxing New Material Technology Co ltd
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Chengrun Jiaxing New Material Technology Co ltd
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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
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • 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
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention discloses a coating with good lubricating property, which comprises the following raw materials in parts by weight: 50-60 parts of epoxy acrylate, 20-27 parts of polyacrylic acid fluorine-containing ester, 12-16 parts of phenolic aldehyde modified epoxy acrylate, 8-11 parts of organic silicon modified epoxy resin, 5-7 parts of 2-acrylamide and 1-vinyl-2-pyrrolidone polymer, 10-15 parts of polytetrafluoroethylene powder, 4-6 parts of a mixture of nano graphite and molybdenum disulfide, 3-5 parts of a suspension dispersant, 1-1.4 parts of a leveling agent and 1.8-2.3 parts of a curing agent. The coating with good lubricating property has excellent lubricating property, can completely meet the use requirements of rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails), and is a primary coating for permanent use; in addition, the use temperature range is wide, and the product can be used for a long time within the temperature range of-60 to 300 ℃; high load capacity, high comprehensive performance and long service life.

Description

Coating with good lubricating property and coating process thereof
Technical Field
The invention relates to the technical field of paint and coating thereof, in particular to a 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.
The epoxy coating is generally divided into 2 types of oily epoxy coating and water-based epoxy coating, and is divided into wear-resistant epoxy coating and epoxy anticorrosive coating according to service performance, and is strictly divided into antistatic epoxy coating and architectural epoxy decorative coating.
However, the currently used coatings also have the following problems:
1. poor lubricating property, and can not meet the use requirements of rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails);
2. the application temperature range is narrow, and the application requirements in high-temperature and low-temperature environments cannot be met;
3. the load capacity is small, the comprehensive performance is poor, and the service life is short when the material is used for rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails).
Based on the situation, the invention provides a coating with good lubricating property and a coating process thereof, which can effectively solve the problems.
Disclosure of Invention
The invention aims to provide a coating with good lubricating property and a coating process thereof. The coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, selecting epoxy acrylate, polyacrylic acid fluorine-containing ester, phenolic aldehyde modified epoxy acrylate, organic silicon modified epoxy resin, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer and polytetrafluoroethylene powder in proper proportion, the mixture of the nano graphite and the molybdenum disulfide, the suspension dispersant, the leveling agent and the curing agent not only give full play to the advantages of the raw materials, but also complement and promote each other, the static friction coefficient of the prepared coating with good lubricating property is as low as 0.04, the dynamic friction coefficient is as low as 0.02, the coating has excellent lubricating property, can completely meet the use requirements of rotating parts (such as a piston, a rotor and a drill bit) and sliding mechanical parts (such as a guide rail), and is a primary coating which is permanently used; in addition, the temperature range of use is wide, the material can be used for a long time within the temperature range of-60-300 ℃, and the use requirements in high-temperature and low-temperature environments can be met; the bearing has large loading capacity and strong comprehensive performance, and has long service life when being used for rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails).
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a coating with good lubricating property comprises the following raw materials in parts by weight:
50-60 parts of epoxy acrylate,
20-27 parts of polyacrylic acid fluorine-containing ester,
12-16 parts of phenolic aldehyde modified epoxy acrylate,
8-11 parts of organic silicon modified epoxy resin,
5 to 7 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
10-15 parts of polytetrafluoroethylene powder,
4-6 parts of a mixture of nano graphite and molybdenum disulfide,
3-5 parts of a suspension dispersant, 1-1.4 parts of a flatting agent and 1.8-2.3 parts of a curing 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: 0.18 to 0.28.
The coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, selecting epoxy acrylate, polyacrylic acid fluorine-containing ester, phenolic aldehyde modified epoxy acrylate, organic silicon modified epoxy resin, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer and polytetrafluoroethylene powder in proper proportion, the mixture of the nano graphite and the molybdenum disulfide, the suspension dispersant, the leveling agent and the curing agent not only give full play to the advantages of the raw materials, but also complement and promote each other, the static friction coefficient of the prepared coating with good lubricating property is as low as 0.04, the dynamic friction coefficient is as low as 0.02, the coating has excellent lubricating property, can completely meet the use requirements of rotating parts (such as a piston, a rotor and a drill bit) and sliding mechanical parts (such as a guide rail), and is a primary coating which is permanently used; in addition, the temperature range of use is wide, the material can be used for a long time within the temperature range of-60-300 ℃, and the use requirements in high-temperature and low-temperature environments can be met; the bearing has large loading capacity and strong comprehensive performance, and has long service life when being used for rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails).
Preferably, the coating with good lubricating property comprises the following raw materials in parts by weight:
55 parts of epoxy acrylate,
24 portions of polyacrylic acid fluorine-containing ester,
14 parts of phenolic aldehyde modified epoxy acrylate,
9.5 parts of organic silicon modified epoxy resin,
6 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12.5 parts of polytetrafluoroethylene powder,
5 portions of mixture of nano graphite and molybdenum disulfide,
4 parts of suspension dispersant, 1.2 parts of flatting agent and 2.1 parts of curing 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: 0.23.
preferably, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole.
Preferably, the leveling agent is a leveling agent AC-3777.
Preferably, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide.
Preferably, the mass ratio of the CF-6501H epoxy curing agent to the cyclohexanone peroxide in the mixture of the CF-6501H epoxy curing agent and the cyclohexanone peroxide is 1: 0.65 to 0.75.
Preferably, the particle size of the polytetrafluoroethylene powder is less than or equal to 4 um.
Preferably, the coating with good lubricating property further comprises the following raw materials in parts by weight: 25-45 parts of a solvent; the solvent is at least one of an alcohol solvent, a ketone solvent, an ester solvent and an ether solvent.
The invention also provides a coating process of the coating with good lubricating property, which comprises the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 50-55 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the coating with good lubricating property and good lubricating property.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the coating with good lubricating property is prepared by selecting raw materials, optimizing the content of each raw material, selecting epoxy acrylate, polyacrylic acid fluorine-containing ester, phenolic aldehyde modified epoxy acrylate, organic silicon modified epoxy resin, 2-acrylamide and 1-vinyl-2-pyrrolidone polymer and polytetrafluoroethylene powder in proper proportion, the mixture of the nano graphite and the molybdenum disulfide, the suspension dispersant, the leveling agent and the curing agent not only give full play to the advantages of the raw materials, but also complement and promote each other, the static friction coefficient of the prepared coating with good lubricating property is as low as 0.04, the dynamic friction coefficient is as low as 0.02, the coating has excellent lubricating property, can completely meet the use requirements of rotating parts (such as a piston, a rotor and a drill bit) and sliding mechanical parts (such as a guide rail), and is a primary coating which is permanently used; in addition, the temperature range of use is wide, the material can be used for a long time within the temperature range of-60-300 ℃, and the use requirements in high-temperature and low-temperature environments can be met; the bearing has large loading capacity and strong comprehensive performance, and has long service life when being used for rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails).
The raw materials of the coating with good lubricating property are added with epoxy acrylate as a main matrix material;
the raw materials of the coating with good lubricating property are added with the polyacrylic acid fluorine-containing ester, so that the coating with good lubricating property has good compatibility in a raw material system, is matched with other components, plays a good synergistic effect, improves the lubricating property of the coating with good lubricating property, and can increase the dispersion compatibility with polytetrafluoroethylene powder and the like;
the phenolic aldehyde modified epoxy acrylate is added into the raw materials of the coating with good lubricating property, so that the coating with good lubricating property has good compatibility in a raw material system, is matched with other components to play a good synergistic effect, improves the corrosion resistance, hardness and thermal stability of the coating with good lubricating property, widens the use temperature range of the coating with good lubricating property, and ensures that the coating with good lubricating property can be used for a long time within the temperature range of-60-300 ℃;
the organic silicon modified epoxy resin is added into the raw materials of the coating with good lubricating property, so that the coating with good lubricating property has good compatibility in a raw material system, is matched with other components to play a good synergistic effect, improves the hardness and the wear resistance of the coating with good lubricating property, and improves the load capacity (good mechanical property) of the coating with good lubricating property;
the raw materials of the coating with good lubricating property are added with polytetrafluoroethylene powder; preferably, the particle size of the polytetrafluoroethylene powder is less than or equal to 4 um. Under the combined action of the copolymer of vinyl pyrrolidone and vinyl imidazole and the like, the polytetrafluoroethylene powder is uniformly dispersed in a raw material system of the coating with good lubricating property, and is matched with other components (mainly a mixture of polyacrylic acid fluorine-containing ester, 2-acrylamide, a polymer of 1-vinyl-2-pyrrolidone, polytetrafluoroethylene powder, nano graphite and molybdenum disulfide) to play a good synergistic effect, so that the lubricating property of the coating with good lubricating property is greatly improved, and the coating with good lubricating property can meet the use requirements of rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails);
the raw materials of the coating with good lubricating property are added with the polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone, so that the coating with good lubricating property has good compatibility in the raw material system of the coating with good lubricating property, and is matched with other components to play a good synergistic effect, thereby improving the lubricating property of the coating with good lubricating property, and better ensuring that the coating with good lubricating property can meet the use requirements of rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails);
the raw materials of the coating with good lubricating property are added with the mixture of the nano graphite and the molybdenum disulfide; the mass ratio of the nano graphite to the molybdenum disulfide in the mixture of the nano graphite and the molybdenum disulfide is 1: 0.18 to 0.28. 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: 0.23. 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 components in the raw material system of the coating with good lubricating property is 1: the friction coefficient is smaller than 0.18-0.28, 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 coating with good lubricating property are added with the suspension dispersant; preferably, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole. The mixture of polytetrafluoroethylene powder, nano graphite and molybdenum disulfide and the like in the raw material system of the coating with good lubricating property can be well and uniformly dispersed; thereby ensuring the performance of the coating;
the leveling agent is added into the raw materials of the coating with good lubricating property; preferably, the leveling agent is a leveling agent AC-3777 (more suitable for the raw material system of the coating with good lubricating property of the invention). The raw materials of the coating with good lubricating property can form a more uniform coating after being sprayed, and the surface of the coating is ensured to be flat and smooth.
In the coating with good lubricating property, the curing agent is added into the raw materials; preferably, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide. Preferably, the mass ratio of the CF-6501H epoxy curing agent to the cyclohexanone peroxide in the mixture of the CF-6501H epoxy curing agent and the cyclohexanone peroxide is 1: 0.65 to 0.75. The raw materials of the coating with good lubricating property can be quickly and uniformly cured after being sprayed, so that a more uniform coating is formed, and the smoothness of the surface of the coating as well as the comprehensive properties of the lubricating property, the load capacity and the like are ensured.
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:
a coating with good lubricating property comprises the following raw materials in parts by weight:
50-60 parts of epoxy acrylate,
20-27 parts of polyacrylic acid fluorine-containing ester,
12-16 parts of phenolic aldehyde modified epoxy acrylate,
8-11 parts of organic silicon modified epoxy resin,
5 to 7 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
10-15 parts of polytetrafluoroethylene powder,
4-6 parts of a mixture of nano graphite and molybdenum disulfide,
3-5 parts of a suspension dispersant, 1-1.4 parts of a flatting agent and 1.8-2.3 parts of a curing 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: 0.18 to 0.28.
Preferably, the coating with good lubricating property comprises the following raw materials in parts by weight:
55 parts of epoxy acrylate,
24 portions of polyacrylic acid fluorine-containing ester,
14 parts of phenolic aldehyde modified epoxy acrylate,
9.5 parts of organic silicon modified epoxy resin,
6 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12.5 parts of polytetrafluoroethylene powder,
5 portions of mixture of nano graphite and molybdenum disulfide,
4 parts of suspension dispersant, 1.2 parts of flatting agent and 2.1 parts of curing 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: 0.23.
preferably, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole.
Preferably, the leveling agent is a leveling agent AC-3777.
Preferably, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide.
Preferably, the mass ratio of the CF-6501H epoxy curing agent to the cyclohexanone peroxide in the mixture of the CF-6501H epoxy curing agent and the cyclohexanone peroxide is 1: 0.65 to 0.75.
Preferably, the particle size of the polytetrafluoroethylene powder is less than or equal to 4 um.
Preferably, the coating with good lubricating property further comprises the following raw materials in parts by weight: 25-45 parts of a solvent; the solvent is at least one of an alcohol solvent, a ketone solvent, an ester solvent and an ether solvent.
The invention also provides a coating process of the coating with good lubricating property, which comprises the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 50-55 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the coating with good lubricating property and good lubricating property.
Example 2:
a coating with good lubricating property comprises the following raw materials in parts by weight:
50 parts of epoxy acrylate,
20 portions of polyacrylic acid fluorine-containing ester,
12 parts of phenolic aldehyde modified epoxy acrylate,
8 parts of organic silicon modified epoxy resin,
5 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
10 portions of polytetrafluoroethylene powder,
4 portions of mixture of nano graphite and molybdenum disulfide,
3 parts of suspension dispersant, 1 part of flatting agent and 1.8 parts of curing 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: 0.18.
in this example, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole.
In the embodiment, the leveling agent is leveling agent AC-3777.
In this example, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide.
In this embodiment, the mass ratio of the CF-6501H epoxy hardener to cyclohexanone peroxide in the mixture of the CF-6501H epoxy hardener and cyclohexanone peroxide is 1: 0.65.
in this embodiment, the particle size of the polytetrafluoroethylene powder is 4um or less.
In this embodiment, the coating with good lubricating property further includes the following raw materials in parts by weight: 25 parts of a solvent; the solvent is prepared from the following components in a mass ratio of 1: 1 of ethylene glycol and butyl acetate.
In this embodiment, the coating process of the coating with good lubricating property includes the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 coating with good lubricating property and good lubricating property is obtained.
Example 3:
a coating with good lubricating property comprises the following raw materials in parts by weight:
60 parts of epoxy acrylate,
27 parts of polyacrylic acid fluorine-containing ester,
16 portions of phenolic aldehyde modified epoxy acrylate,
11 parts of organic silicon modified epoxy resin,
7 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
15 portions of polytetrafluoroethylene powder,
6 portions of mixture of nano graphite and molybdenum disulfide,
5 parts of suspension dispersant, 1.4 parts of flatting agent and 2.3 parts of curing 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 example, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole.
In the embodiment, the leveling agent is leveling agent AC-3777.
In this example, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide.
In this embodiment, the mass ratio of the CF-6501H epoxy hardener to cyclohexanone peroxide in the mixture of the CF-6501H epoxy hardener and cyclohexanone peroxide is 1: 0.75.
in this embodiment, the particle size of the polytetrafluoroethylene powder is 4um or less.
In this embodiment, the coating with good lubricating property further includes the following raw materials in parts by weight: 45 parts of a solvent; the solvent is prepared from the following components in a mass ratio of 1: 1 of ethylene glycol and butyl acetate.
In this embodiment, the coating process of the coating with good lubricating property includes the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 55 ℃ after spraying, and then the coating is cured for more than 12 hours at normal temperature, so that the coating with good lubricating property is obtained.
Example 4:
a coating with good lubricating property comprises the following raw materials in parts by weight:
55 parts of epoxy acrylate,
24 portions of polyacrylic acid fluorine-containing ester,
14 parts of phenolic aldehyde modified epoxy acrylate,
9.5 parts of organic silicon modified epoxy resin,
6 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12.5 parts of polytetrafluoroethylene powder,
5 portions of mixture of nano graphite and molybdenum disulfide,
4 parts of suspension dispersant, 1.2 parts of flatting agent and 2.1 parts of curing agent.
In this embodiment, the mass ratio of the nano-graphite to the molybdenum disulfide in the mixture of the nano-graphite and the molybdenum disulfide is 1: 0.23.
in this example, the suspension dispersant is a copolymer of vinylpyrrolidone and vinylimidazole.
In the embodiment, the leveling agent is leveling agent AC-3777.
In this example, the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide.
In this embodiment, the mass ratio of the CF-6501H epoxy hardener to cyclohexanone peroxide in the mixture of the CF-6501H epoxy hardener and cyclohexanone peroxide is 1: 0.7.
in this embodiment, the particle size of the polytetrafluoroethylene powder is 4um or less.
In this embodiment, the coating with good lubricating property further includes the following raw materials in parts by weight: 35 parts of a solvent; the solvent is prepared from the following components in a mass ratio of 1: 1 of ethylene glycol and butyl acetate.
In this embodiment, the coating process of the coating with good lubricating property includes the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 53 ℃ after spraying, and then the coating is cured for more than 12 hours at normal temperature, so that the coating with good lubricating property and good lubricating property is obtained.
The following performance tests were performed on the coatings with good lubricating properties obtained in examples 2 to 4 of the present invention and the ordinary 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:
TABLE 1
Figure BDA0002369038540000111
As can be seen from the table above, the coating with good lubricating property of the invention has the static friction coefficient as low as 0.04, the dynamic friction coefficient as low as 0.02, has excellent lubricating property, can completely meet the use requirements of rotating parts (such as pistons, rotors and drill bits) and sliding mechanical parts (such as guide rails), and is a primary coating which is permanently used; in addition, the temperature range of use is wide, the material can be used for a long time within the temperature range of minus 60-300 ℃, and the use requirements in high-temperature and low-temperature environments can be met.
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 coating with good lubricating property is characterized by comprising the following raw materials in parts by weight:
50-60 parts of epoxy acrylate,
20-27 parts of polyacrylic acid fluorine-containing ester,
12-16 parts of phenolic aldehyde modified epoxy acrylate,
8-11 parts of organic silicon modified epoxy resin,
5 to 7 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
10-15 parts of polytetrafluoroethylene powder,
4-6 parts of a mixture of nano graphite and molybdenum disulfide,
3-5 parts of a suspension dispersant, 1-1.4 parts of a flatting agent and 1.8-2.3 parts of a curing 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: 0.18 to 0.28;
the suspension dispersant is a copolymer of vinyl pyrrolidone and vinyl imidazole;
the curing agent is a mixture of CF-6501H epoxy curing agent and cyclohexanone peroxide;
the mass ratio of the CF-6501H epoxy curing agent to the cyclohexanone peroxide in the mixture of the CF-6501H epoxy curing agent and the cyclohexanone peroxide is 1: 0.65 to 0.75;
the particle size of the polytetrafluoroethylene powder is less than or equal to 4 um.
2. The good-lubricity coating according to claim 1, comprising the following raw materials in parts by weight:
55 parts of epoxy acrylate,
24 portions of polyacrylic acid fluorine-containing ester,
14 parts of phenolic aldehyde modified epoxy acrylate,
9.5 parts of organic silicon modified epoxy resin,
6 parts of a polymer of 2-acrylamide and 1-vinyl-2-pyrrolidone,
12.5 parts of polytetrafluoroethylene powder,
5 portions of mixture of nano graphite and molybdenum disulfide,
4 parts of suspension dispersant, 1.2 parts of flatting agent and 2.1 parts of curing agent.
3. The 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: 0.23.
4. the coating with good lubricating property as claimed in claim 1, wherein the leveling agent is leveling agent AC-3777.
5. The good-lubricity coating according to claim 1, further comprising the following raw materials in parts by weight: 25-45 parts of a solvent; the solvent is at least one of an alcohol solvent, a ketone solvent, an ester solvent and an ether solvent.
6. A coating process of the coating with good lubricating property according to any one of claims 1 to 5, characterized by comprising the following steps:
1) weighing the raw materials of the coating with good lubricating property according to the parts by weight for later use;
2) mixing the raw materials of the coating with good lubricating property and good lubricating property, and uniformly mixing the raw materials by adopting high-speed dispersion;
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 50-55 ℃ after spraying, and then curing is carried out for more than 12h at normal temperature, so as to obtain the coating with good lubricating property.
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CN102199474A (en) * 2011-04-29 2011-09-28 安徽工业大学 Dry film lubricant used for metal parts
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
CN108532313A (en) * 2018-06-12 2018-09-14 江苏远大新纺织联合发展有限公司 Surface self-lubricating type composite geotextile and preparation method thereof

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CN102199474A (en) * 2011-04-29 2011-09-28 安徽工业大学 Dry film lubricant used for metal parts
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
CN108532313A (en) * 2018-06-12 2018-09-14 江苏远大新纺织联合发展有限公司 Surface self-lubricating type composite geotextile and preparation method thereof

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