CN114702881A - Solvent-free epoxy graphene zinc powder coating and preparation method thereof - Google Patents

Solvent-free epoxy graphene zinc powder coating and preparation method thereof Download PDF

Info

Publication number
CN114702881A
CN114702881A CN202210414469.4A CN202210414469A CN114702881A CN 114702881 A CN114702881 A CN 114702881A CN 202210414469 A CN202210414469 A CN 202210414469A CN 114702881 A CN114702881 A CN 114702881A
Authority
CN
China
Prior art keywords
parts
zinc powder
solvent
speed
stirring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210414469.4A
Other languages
Chinese (zh)
Inventor
危德博
徐蛟龙
余燕然
熊艳红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Deqian New Materials Co ltd
Original Assignee
Hunan Deqian New Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Deqian New Materials Co ltd filed Critical Hunan Deqian New Materials Co ltd
Priority to CN202210414469.4A priority Critical patent/CN114702881A/en
Publication of CN114702881A publication Critical patent/CN114702881A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D177/00Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Coating compositions based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • C09D5/10Anti-corrosive paints containing metal dust
    • C09D5/106Anti-corrosive paints containing metal dust containing Zn
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/0893Zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a solvent-free epoxy graphene zinc powder coating and a preparation method thereof, wherein the solvent-free epoxy graphene zinc powder coating comprises 20-80 parts of active epoxy resin, 3-8 parts of powdered graphene, 20-35 parts of polyaminoamide resin, 3-8 parts of a thixotropic agent, 4-10 parts of a filler, 5-12 parts of an anticorrosion aid and 10-25 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder with a volume ratio of 2-5: 10.

Description

Solvent-free epoxy graphene zinc powder coating and preparation method thereof
Technical Field
The invention relates to the technical field of industrial coatings, and particularly relates to a solvent-free epoxy graphene zinc powder coating and a preparation method thereof.
Background
Chemical storage tanks, pipelines, bridge steel structures, marine equipment, energy and power, equipment manufacturing and other fields, and potential safety hazards are easily generated due to frequent corrosion of internal and external environment media in the use process of some storage tanks, conveying pipelines and steel structures. However, the corrosion of metal and reinforced concrete brings great economic loss and social harm to human beings, even catastrophic accidents, in the chemical industry, petroleum industry, metallurgy industry, electric power industry, mechanical industry and other industries, some equipment and pipelines are corroded due to the existence of corrosive media, and especially high-temperature parts of some equipment can be quickly corroded under the dual action of high temperature and corrosive media.
Disclosure of Invention
In view of the above, the invention provides a solvent-free epoxy graphene zinc powder coating and a preparation method thereof, which solve the above problems.
The technical scheme of the invention is realized as follows: a solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 20-80 parts of active epoxy resin, 3-8 parts of powdery graphene, 20-35 parts of polyaminoamide resin, 3-8 parts of thixotropic agent, 4-10 parts of filler, 5-12 parts of anti-corrosion additive and 10-25 parts of repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 2-5: 10.
Further explaining, the solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 50 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of thixotropic agent, 7 parts of filler, 8 parts of anti-corrosion additive and 15 parts of repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 3: 10.
Further, the filler is one or more of talcum powder, barium sulfate, quartz powder and mica powder.
Further, the thixotropic agent is any one of polyamide wax, polyethylene wax, organic bentonite and fumed silica.
Further, the anti-corrosion additive is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to the volume ratio of 2-8:1-3: 5.
Further, the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 20-60 min at a magnetic stirring speed of 800-1000 rpm and at a temperature of 40-60 ℃; the volume ratio of the methanol to the ethyl acetate is 2-4: 1.
Further, the modified nano zinc powder is prepared by adding nano zinc powderBall-milling propylene glycol phenyl ether in a high-speed ball mill at the ball-milling rotation speed of 500-1000 rpm for 20-40 min, adding polysaccharide alcohol and deionized water, and introducing inert gas to protect the atmosphere to obtain modified nano zinc powder, wherein the mass-volume ratio of the nano zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 20-50: 8-10: 3-5: 4, the inert gas is one of argon, nitrogen and helium, and the introduction rate is 1-5 cm3/min。
Further, the preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at a high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 0.5-2.0 multiplied by 10-2Stirring at the stirring speed of 600-800 rpm for 5-12 min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, wherein the power of the high-speed dispersion machine is 7.5-15 kw, and the rotating speed is 300-1800 r/min to obtain a mixed material II;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anticorrosive additive and a repairing agent, mechanically stirring, and performing high-speed dispersion treatment to obtain the solvent-free epoxy graphene zinc powder coating.
Further, the mechanical stirring speed of S3 is 150-250 rpm, and the stirring time is 15-45 min.
Further, the high-speed dispersing and stirring speed of the S3 is 4000-8000 rpm, and the dispersing time is 10-25 min.
Compared with the prior art, the invention has the beneficial effects that:
the solvent-free epoxy graphene zinc powder coating prepared by the invention has excellent corrosion resistance. Due to the fact that the coating contains graphene, the excellent conductivity of the coating can enable the conductivity of the zinc powder to be enhanced, and the utilization rate of the zinc powder in the dry film coating is improved; meanwhile, the sheet structure of the graphene enables the coating to form a labyrinth effect, and the invasion of an external corrosive medium can be effectively prevented.
The paint has good flexibility and impact resistance, can not crack in a high-low temperature circulating coating under the condition of an ultra-thick film, has tolerance on the surface of a low surface, and has super strong adhesive force. The coating has a self-repairing function on the tiny cracks, so that the coating is not easy to crack and fall off. Has high tolerance to high temperature and high humidity.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
Example 1
A solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 20 parts of active epoxy resin, 3 parts of powdered graphene, 20 parts of polyaminoamide resin, 3 parts of polyamide wax, 4 parts of talcum powder, 5 parts of an anticorrosion assistant and 10 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 2:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate in a volume ratio of 2:1: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 20min at a magnetic stirring speed of 800rpm and at 40 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 2: 1;
adding propylene glycol phenyl ether into nano zinc powder, performing ball milling in a high-speed ball mill for 20min at the ball milling revolution of 500rpm, adding polysaccharide alcohol and deionized water, introducing inert gas to protect the atmosphere to obtain the modified nano zinc powder, wherein the mass-to-volume ratio of the nano zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 20:8:3:4, the inert gas is nitrogen, and the introduction rate is 1cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, adding the repairing agentStirring under vacuum degree of 1.5X 10-2Stirring at the stirring speed of 700rpm for 10min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Example 2
A solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 80 parts of active epoxy resin, 8 parts of powdery graphene, 35 parts of polyaminoamide resin, 8 parts of polyethylene wax, 10 parts of barium sulfate, 12 parts of an anticorrosion assistant and 25 parts of a repairing agent, wherein the repairing agent is a nano silica sol and modified nano zinc powder with a volume ratio of 5:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to a volume ratio of 8:3: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 60min at a magnetic stirring speed of 1000rpm and 60 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 4: 1;
adding propylene glycol phenyl ether into nano zinc powder, carrying out ball milling in a high-speed ball mill for 40min at the ball milling rotation speed of 1000rpm, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano zinc powder, wherein the mass-to-volume ratio of the nano zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 50:10:5:4, the inert gas is argon, and the introduction rate is 5cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring at high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 1.5 multiplied by 10-2Stirring at the stirring speed of 700rpm for 10min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Example 3
A solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 60 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of organic bentonite, 6 parts of mica powder, 8 parts of an anticorrosion assistant and 22 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder with the volume ratio of 3:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to the volume ratio of 5:2: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 40min at a magnetic stirring speed of 900rpm and 50 ℃ to obtain active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 3: 1;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 1.5 multiplied by 10-2MPa, the stirring speed is 700rpm, the stirring is carried out for 10min,obtaining a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Example 4
A solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 60 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of fumed silica, 6 parts of quartz powder, 8 parts of an anticorrosion assistant and 22 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 3:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate in a volume ratio of 5:2: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 40min at a magnetic stirring speed of 900rpm and 50 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 3: 1;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
S1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 0.5 multiplied by 10-2Stirring for 5min at the stirring speed of 600rpm under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, wherein the power of the high-speed dispersion machine is 7.5kw, and the rotating speed is 300r/min to obtain a mixed material II;
s3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, carrying out mechanical stirring at a mechanical stirring speed of 150rpm for 15min, and then carrying out high-speed dispersion treatment at a stirring speed of 4000rpm for 10min to obtain the solvent-free epoxy graphene zinc powder coating.
Example 5
A solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 60 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of fumed silica, 6 parts of barium sulfate, 8 parts of an anticorrosion assistant and 22 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder with the volume ratio of 3:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to the volume ratio of 5:2: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 40min at a magnetic stirring speed of 900rpm and 50 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 3: 1;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 1.5 multiplied by 10-2Stirring at the stirring speed of 700rpm for 10min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Comparative example 1
The difference between the comparative example and the example 3 is that the solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 100 parts of active epoxy resin, 2 parts of powdered graphene, 15 parts of polyaminoamide resin, 10 parts of thixotropic agent, 15 parts of filler, 18 parts of anti-corrosion additive and 30 parts of repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 8: 10; the rest of the procedure was the same as in example 3.
Comparative example 2
The difference between the comparative example and the example 3 is that the raw material of the solvent-free epoxy graphene zinc powder coating does not contain a repairing agent, and the solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 60 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of organic bentonite, 6 parts of mica powder and 8 parts of an anticorrosion auxiliary agent, wherein the anticorrosion auxiliary agent is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to a volume ratio of 5:2: 5;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 40min at a magnetic stirring speed of 900rpm and 50 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 3: 1;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, uniformly stirring at a high speed of 700rpm for 10min to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Comparative example 3
The difference between the comparative example and the example 3 is that the solvent-free epoxy graphene zinc powder coating does not contain an anticorrosion additive, and specifically is a solvent-free epoxy graphene zinc powder coating which comprises the following raw materials in parts by weight: 60 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of organic bentonite, 6 parts of mica powder and 22 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 3: 10;
the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 40min at a magnetic stirring speed of 900rpm and 50 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 3: 1;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, addingAdding repairing agent, and vacuum stirring at vacuum degree of 1.5 × 10-2Stirring at the stirring speed of 700rpm for 10min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
Comparative example 4
The difference between the comparative example and the example 3 is that the active epoxy resin in the solvent-free epoxy graphene zinc powder coating is not activated, and the solvent-free epoxy graphene zinc powder coating comprises the following raw materials in parts by weight: 60 parts of epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of organic bentonite, 6 parts of mica powder, 8 parts of an anticorrosion assistant and 22 parts of a repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder with the volume ratio of 3:10, and the anticorrosion assistant is composed of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to the volume ratio of 5:2: 5;
the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder, performing ball milling in a high-speed ball mill at the ball milling revolution speed of 800rpm for 30min, adding polysaccharide alcohol and deionized water, introducing inert gas for protection atmosphere to obtain the modified nano-zinc powder, wherein the mass-volume ratio of the nano-zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 40:9:4:4, the inert gas is argon, and the introduction rate is 3cm3/min;
The preparation method of the solvent-free and solvent-free epoxy graphene zinc powder coating comprises the following steps:
s1, mixing the epoxy resin and the polyaminoamide resin, stirring uniformly at high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 1.5 multiplied by 10-2Stirring at the stirring speed of 700rpm for 10min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, and obtaining a mixed material II by the high-speed dispersion machine at the power of 12kw and the rotating speed of 1000 r/min;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anti-corrosion auxiliary agent and a repairing agent, mechanically stirring at a mechanical stirring speed of 200rpm for 30min, and then performing high-speed dispersion treatment at a stirring speed of 6000rpm for 20min to obtain the solvent-free epoxy graphene zinc powder coating.
First, performance test
The solvent-free epoxy graphene zinc powder coating is subjected to performance test, the salt spray resistance is determined according to GB/T1771-2007, the acid resistance and the alkali resistance are determined according to GB 1763-,
the test results were as follows:
Figure BDA0003604952530000091
Figure BDA0003604952530000101
according to the results, the paint with strong anti-corrosion performance is provided, the raw materials are selected according to the scientific proportion, the anti-corrosion auxiliary agent and the repairing agent are prepared, the paint has excellent anti-corrosion performance, and has a self-repairing function on tiny cracks, so that a coating film is not easy to crack and fall off.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A solvent-free epoxy graphene zinc powder coating is characterized in that: the feed comprises the following raw materials in parts by weight: 20-80 parts of active epoxy resin, 3-8 parts of powdery graphene, 20-35 parts of polyaminoamide resin, 3-8 parts of thixotropic agent, 4-10 parts of filler, 5-12 parts of anticorrosion auxiliary agent and 10-25 parts of repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 2-5: 10.
2. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 50 parts of active epoxy resin, 5 parts of powdered graphene, 30 parts of polyaminoamide resin, 5 parts of thixotropic agent, 7 parts of filler, 8 parts of anti-corrosion additive and 15 parts of repairing agent, wherein the repairing agent is nano silica sol and modified nano zinc powder in a volume ratio of 3: 10.
3. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the filler is one or more of talcum powder, barium sulfate, quartz powder and mica powder.
4. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the thixotropic agent is any one of polyamide wax, polyethylene wax, organic bentonite and fumed silica.
5. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the anti-corrosion additive consists of zinc benzoate, zinc phosphomolybdate and titanium phosphate according to the volume ratio of 2-8:1-3: 5.
6. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the active epoxy resin is prepared by adding epoxy resin into a mixed solution of methanol and ethyl acetate, and reacting for 20-60 min at a magnetic stirring speed of 800-1000 rpm and at 40-60 ℃ to obtain the active epoxy resin; the volume ratio of the methanol to the ethyl acetate is 2-4: 1.
7. The solvent-free epoxy graphene zinc powder coating of claim 1, wherein: the modified nano-zinc powder is prepared by adding propylene glycol phenyl ether into nano-zinc powder in a high-speed ball millPerforming ball milling, wherein the ball milling rotation number is 500-1000 rpm, the ball milling time is 20-40 min, adding polysaccharide alcohol and deionized water, introducing inert gas to protect the atmosphere, and obtaining modified nano zinc powder, wherein the mass volume ratio of the nano zinc powder to the propylene glycol phenyl ether to the polysaccharide alcohol to the deionized water is 20-50: 8-10: 3-5: 4, the inert gas is one of argon, nitrogen and helium, and the introduction rate is 1-5 cm3/min。
8. The method for preparing a solvent-free epoxy graphene zinc powder coating as defined in any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, mixing the active epoxy resin and the polyaminoamide resin, stirring uniformly at a high speed, adding the repairing agent, and stirring in vacuum with the vacuum degree of 0.5-2.0 multiplied by 10-2Stirring at the stirring speed of 600-800 rpm for 5-12 min under MPa to obtain a mixed material I;
s2, putting the powdery graphene, the thixotropic agent and the filler into a high-speed dispersion machine, wherein the power of the high-speed dispersion machine is 7.5-15 kw, and the rotating speed is 300-1800 r/min to obtain a mixed material II;
and S3, mixing and stirring the mixture I and the mixture II uniformly, adding an anticorrosive additive and a repairing agent, mechanically stirring, and performing high-speed dispersion treatment to obtain the solvent-free epoxy graphene zinc powder coating.
9. The method for preparing a solvent-free epoxy graphene zinc powder coating as claimed in claim 8, wherein: and the mechanical stirring speed of the S3 is 150-250 rpm, and the stirring is carried out for 15-45 min.
10. The method for preparing a solvent-free epoxy graphene zinc powder coating as claimed in claim 8, wherein: and the high-speed dispersing and stirring speed of the S3 is 4000-8000 rpm, and the dispersing time is 10-25 min.
CN202210414469.4A 2022-04-20 2022-04-20 Solvent-free epoxy graphene zinc powder coating and preparation method thereof Pending CN114702881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210414469.4A CN114702881A (en) 2022-04-20 2022-04-20 Solvent-free epoxy graphene zinc powder coating and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210414469.4A CN114702881A (en) 2022-04-20 2022-04-20 Solvent-free epoxy graphene zinc powder coating and preparation method thereof

Publications (1)

Publication Number Publication Date
CN114702881A true CN114702881A (en) 2022-07-05

Family

ID=82175535

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210414469.4A Pending CN114702881A (en) 2022-04-20 2022-04-20 Solvent-free epoxy graphene zinc powder coating and preparation method thereof

Country Status (1)

Country Link
CN (1) CN114702881A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105733403A (en) * 2016-02-24 2016-07-06 深圳市深赛尔股份有限公司 Waterborne paint of container two-coating system and preparing method and coating technology thereof
CN105860748A (en) * 2016-05-01 2016-08-17 长沙民德消防工程涂料有限公司 Solvent-free epoxy anticorrosive coating and preparation method thereof
CN108610885A (en) * 2016-12-28 2018-10-02 河北晨阳工贸集团有限公司 A kind of nanometer water silicon solution modification water-base epoxy two-component zinc-rich paint and preparation method thereof
CN110878184A (en) * 2019-10-15 2020-03-13 浙江衢州贝利德涂料有限公司 Graphene modified epoxy zinc-rich primer and preparation method thereof
CN112266693A (en) * 2020-10-29 2021-01-26 湖南省德谦新材料有限公司 Solvent-free graphene zinc powder coating
CN114058246A (en) * 2021-12-31 2022-02-18 常州市华菱新材料有限公司 High-strength corrosion-resistant water-based epoxy coating and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105733403A (en) * 2016-02-24 2016-07-06 深圳市深赛尔股份有限公司 Waterborne paint of container two-coating system and preparing method and coating technology thereof
CN105860748A (en) * 2016-05-01 2016-08-17 长沙民德消防工程涂料有限公司 Solvent-free epoxy anticorrosive coating and preparation method thereof
CN108610885A (en) * 2016-12-28 2018-10-02 河北晨阳工贸集团有限公司 A kind of nanometer water silicon solution modification water-base epoxy two-component zinc-rich paint and preparation method thereof
CN110878184A (en) * 2019-10-15 2020-03-13 浙江衢州贝利德涂料有限公司 Graphene modified epoxy zinc-rich primer and preparation method thereof
CN112266693A (en) * 2020-10-29 2021-01-26 湖南省德谦新材料有限公司 Solvent-free graphene zinc powder coating
CN114058246A (en) * 2021-12-31 2022-02-18 常州市华菱新材料有限公司 High-strength corrosion-resistant water-based epoxy coating and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
朱晓云等: "《有色金属特种功能粉体材料制备技术及应用》", 31 October 2011, 冶金工业出版社 *
樊富友等编著: "《制导炸弹结构防腐蚀与表面防护技术》", 30 April 2018, 西北工业大学出版社 *
王锡娇著: "《涂料与颜料标准应用手册(上册)》", 30 April 2005, 军事谊文出版社 *

Similar Documents

Publication Publication Date Title
Xia et al. Co-modification of polydopamine and KH560 on g-C3N4 nanosheets for enhancing the corrosion protection property of waterborne epoxy coating
Ding et al. Study on graphene modified organic anti-corrosion coatings: A comprehensive review
Xia et al. MoS2 nanosheets modified SiO2 to enhance the anticorrosive and mechanical performance of epoxy coating
Yan et al. Dual-functional graphene oxide-based nanomaterial for enhancing the passive and active corrosion protection of epoxy coating
Ubaid et al. Multifunctional self-healing polymeric nanocomposite coatings for corrosion inhibition of steel
Di et al. Corrosion-resistant hybrid coatings based on graphene oxide–zirconia dioxide/epoxy system
US10745569B2 (en) Anti-corrosion nanocomposite coating
EP2931818B1 (en) Process for providing metallic substrates with corrosion resistance
CN109735200B (en) Epoxy anticorrosive coating composition and preparation method and application thereof
Atta et al. Epoxy embedded with TiO2 nanogel composites as promising self-healing organic coatings of steel
CN110724432A (en) Graphene water-based anticorrosive paint and preparation method thereof
Liu et al. A facile approach to fabricating graphene/waterborne epoxy coatings with dual functionalities of barrier and corrosion inhibitor
CN113265185B (en) Self-repairing graphene composite titanium nano heavy-duty anticorrosive material and preparation and use methods thereof
CN115044279B (en) Two-dimensional polydopamine reinforced waterborne epoxy composite anticorrosive paint and preparation method and application thereof
CN110684467A (en) Water-based anticorrosive paint based on graphene oxide and preparation method thereof
JP4997044B2 (en) Polyaniline doped with metal phosphate and method for producing the same, polyaniline-containing solution doped with metal phosphate, and paint
Feng et al. Novel Lignin‐Functionalized Waterborne Epoxy Composite Coatings with Excellent Anti‐Aging, UV Resistance, and Interfacial Anti‐Corrosion Performance
CN107760205B (en) Water-based carbon steel surface treating agent based on polypyrrole/graphene composite material
CN110204991B (en) Efficient anticorrosion h-BN/GO/waterborne epoxy composite material, preparation method and application
Chen et al. Achieving superior anti-corrosion properties of vinyl ester resin coatings via compositing with 3-methacryloxy propyl trimethoxysilane functionalized MXene nanosheets
Zhao et al. Eco-friendly design of α-zirconium phosphate modified by phytic acid for reinforcing the corrosion resistance of waterborne epoxy coating
Yang et al. Graphene oxide modified tung oil-based vinyl ester coating with improved anti-corrosion performance
CN111876005A (en) Anti-corrosion photovoltaic cable coating and preparation method thereof
Fu et al. Application of modified graphene oxide in corrosion protection
Fang et al. Enhancement of barrier and corrosion protection performance of vinyl ester resin coating via incorporation of MXene nanosheets

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20220705

RJ01 Rejection of invention patent application after publication