CN113354963A - Graphene-containing anti-oxidation decarbonization coating and preparation method thereof - Google Patents

Graphene-containing anti-oxidation decarbonization coating and preparation method thereof Download PDF

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CN113354963A
CN113354963A CN202110533742.0A CN202110533742A CN113354963A CN 113354963 A CN113354963 A CN 113354963A CN 202110533742 A CN202110533742 A CN 202110533742A CN 113354963 A CN113354963 A CN 113354963A
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graphene
weight
base material
oxidation
water
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孙建林
孟亚男
唐华杰
贺佳琪
常虔浩
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • 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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  • Paints Or Removers (AREA)

Abstract

The invention discloses an anti-oxidation decarbonization coating containing graphene and a preparation method thereof, which solve the problem of surface oxidation decarbonization of steel in the heating process by utilizing the particularity of the structure and the performance of a graphene material. Consists of four parts of a base material, a binder, water and an organic matter additive, wherein the base material consists of graphene, nano molybdenum oxide, metal oxide powder and SiO2Forming; the weight ratio of the base material to the water is 1:1.5, and the weight ratio of the adhesive sodium silicate to the base material is 0.2: 1; the organic additive is triethanolamine and sodium polyacrylate. The weight of the graphene in the base material accounts for 1-5% of the weight of the base material, the weight of the nano molybdenum oxide accounts for 1-3%, and the metal oxide powder is：Al2O3、MgO、Cr2O3And B2O3；Al2O310-20% of MgO, 10-20% of Cr2O35-15% by weight of B2O35-15% of the total weight, and the balance of SiO2. The product of the invention has good strength, stability and stripping performance, and can effectively reduce the depth of the decarburized layer on the surface of steel and reduce the oxidation weight loss of the steel.

Description

Graphene-containing anti-oxidation decarbonization coating and preparation method thereof
Technical Field
The invention relates to the field of anti-oxidation and decarburization coatings on the surfaces of steel products, is used for anti-oxidation and decarburization in the heating process of the steel products, and particularly relates to an anti-oxidation and decarburization coating containing graphene and a preparation method thereof.
Background
In order to solve the problem of oxidation and decarburization in the quality control process of high-quality special steel wire rods and further improve the qualification rate of finished products, the protection technology of the oxidation and decarburization resistant coating has the advantages of low cost, simple and convenient operation and strong adaptability and is widely concerned. The stability, stripping property, strength and using effect of the traditional anti-oxidation decarburizing coating are always hot problems in the relevant research field. The graphene has more excellent physical and chemical properties due to the structural particularity, and can just make up the limitation of the traditional anti-oxidation decarburized coating. The graphene has high surface energy and strong adsorption capacity, so that the graphene has higher strength. The graphene is a chemical inert substance, has more excellent impermeability, high-temperature stability and chemical stability, and can effectively prevent the interaction between the furnace atmosphere such as oxygen and the like and a metal matrix.
Disclosure of Invention
In order to improve the stability, the peeling property, the strength and the using effect of the traditional anti-oxidation decarburizing coating, the invention aims to provide the anti-oxidation decarburizing coating containing graphene and the preparation method thereof.
An anti-oxidation decarbonization coating containing graphene comprises four parts of a base material, a binder, water and an organic matter additive, wherein the base material comprises graphene, nano molybdenum oxide, metal oxide powder and SiO2Forming; the weight ratio of the base material to the water is 1:1.5, and the weight ratio of the adhesive sodium silicate to the base material is 0.2: 1; the organic additive is triethanolamine and sodium polyacrylate.
Furthermore, the weight of the graphene in the base material accounts for 1-5% of the weight of the base material, and the weight of the nano molybdenum oxide accounts for 1-3%. The metal oxide powder is: al (Al)2O3、MgO、Cr2O3And B2O3；Al2O310-20% of MgO, 10-20% of Cr2O35-15% by weight of B2O35-15% of the total weight, and the balance of SiO2。
Further, the graphene is a single-layer graphene sheet, and the thickness of the graphene sheet is nano-scale.
Further, the nominal particle size of the nano molybdenum oxide is 30 nm-80 nm.
Further, the amount of the sodium polyacrylate is 0.4-0.8% of the weight of the water.
Furthermore, the dosage of the triethanolamine is 0.5-1.5% of the weight of the graphene.
The preparation method of the anti-oxidation and decarburization coating containing graphene is characterized in that graphene in a base material is pre-dispersed in water, and is uniformly stirred under the heating condition of 60-80 ℃, and then triethanolamine is added for assistance, wherein the dosage of the triethanolamine is 0.5-1.5 percent of the weight of the graphene, and the triethanolamine is continuously and uniformly stirred under the heating condition of 60-80 ℃ to prepare a graphene pre-dispersion liquid; mixing other components in the base material with water, uniformly stirring at the heating temperature of 40-60 ℃, slowly adding the graphene pre-dispersion liquid while continuously stirring, adding sodium polyacrylate after uniformly stirring, continuously and uniformly stirring at the temperature of 40-60 ℃, and slowly adding the binder.
The graphene with excellent performance is used for preparing the novel anti-oxidation decarburization coating, and the prepared novel anti-oxidation decarburization coating containing the graphene has good strength, stability and stripping performance, can effectively reduce the depth of a decarburization layer on the surface of steel and reduce the oxidation weight loss of the steel.
By the technical scheme, the invention has the beneficial effects that:
1. the graphene-containing anti-oxidation decarburization coating is innovatively added with graphene powder, so that a novel anti-oxidation decarburization coating with higher strength, stability and spalling property is obtained.
2. According to the anti-oxidation decarbonization coating containing graphene, a proper amount of triethanolamine and sodium polyacrylate are added to serve as auxiliary additives, so that the novel anti-oxidation decarbonization coating with better dispersion stability is obtained.
3. The graphene-containing anti-oxidation decarburized coating is applied to the surface of steel, so that the oxidation weight loss rate in the heating process can be effectively reduced, and the depth of a decarburized layer is remarkably reduced.
Detailed Description
Example 1
Example 1 the formulation base material weight percentage is: graphene: 1 percent; nano molybdenum oxide: 1 percent; al (Al)2O3：15％；MgO：15％；Cr2O3：10％；B2O3：10％；SiO2: 48 percent. The weight of the binder is 20% of that of the base material, the weight of the water is 1.5 times of that of the base material, the weight of the triethanolamine is 0.5% of that of the graphene, and the weight of the sodium polyacrylate is 0.4% of that of the water.
The preparation method comprises the following steps by weight:
mixing graphene with half water, stirring uniformly under the heating condition of 70 ℃, adding triethanolamine, and stirring uniformly under the heating condition of 70 ℃ to obtain the graphene pre-dispersion liquid. Mixing other components in the base material with the rest half water, stirring uniformly under the heating condition of 50 ℃, slowly adding the graphene pre-dispersion liquid while continuously stirring, adding sodium polyacrylate after stirring uniformly, continuously stirring uniformly under the condition of 50 ℃, and simultaneously slowly adding the binder.
Example 2
Example 2 the formulation base material weight percentage is: graphene: 5 percent; nano molybdenum oxide: 3 percent; al (Al)2O3：15％；MgO：15％；Cr2O3：10％；B2O3：10％；SiO2: 42 percent. The weight of the binder is 20% of that of the base material, the weight of the water is 1.5 times of that of the base material, the weight of the triethanolamine is 1.5% of that of the graphene, and the weight of the sodium polyacrylate is 0.8% of that of the water.
The preparation method comprises the following steps by weight:
mixing graphene with half water, stirring uniformly under the heating condition of 70 ℃, adding triethanolamine, and stirring uniformly under the heating condition of 70 ℃ to obtain the graphene pre-dispersion liquid. Mixing other components in the base material with the rest half water, stirring uniformly under the heating condition of 50 ℃, slowly adding the graphene pre-dispersion liquid while continuously stirring, adding sodium polyacrylate after stirring uniformly, continuously stirring uniformly under the condition of 50 ℃, and simultaneously slowly adding the binder.
Example 3
Example 3 the formulation base material weight percentage is: graphene: 3 percent; nano molybdenum oxide: 2 percent; al (Al)2O3：15％；MgO：15％；Cr2O3：10％；B2O3：10％；SiO2: 45 percent. The weight of the binder is 20% of that of the base material, the weight of the water is 1.5 times of that of the base material, the weight of the triethanolamine is 1% of that of the graphene, and the weight of the sodium polyacrylate is 0.6% of that of the water.
The preparation method comprises the following steps by weight:
mixing graphene with half water, stirring uniformly under the heating condition of 70 ℃, adding triethanolamine, and stirring uniformly under the heating condition of 70 ℃ to obtain the graphene pre-dispersion liquid. Mixing other components in the base material with the rest half water, stirring uniformly under the heating condition of 50 ℃, slowly adding the graphene pre-dispersion liquid while continuously stirring, adding sodium polyacrylate after stirring uniformly, continuously stirring uniformly under the condition of 50 ℃, and simultaneously slowly adding the binder.
The performance indexes of the prepared product are as follows:
Figure BDA0003066678830000031
the above embodiments are only preferred embodiments of the present invention, but the implementation manner of the present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, simplifications, which do not depart from the spirit and principle of the present invention, should be regarded as equivalent replacements within the protection scope of the present invention.

Claims (6)

1. The anti-oxidation decarbonization coating containing graphene is characterized by comprising four parts of a base material, a binder, water and an organic matter additive, wherein the base material comprises graphene, nano molybdenum oxide, metal oxide powder and SiO2Forming; the weight ratio of the base material to the water is 1:1.5, and the weight ratio of the adhesive sodium silicate to the base material is 0.2: 1; the organic additive is triethanolamine and sodium polyacrylate.
2. The graphene-containing oxidation and decarbonization preventing coating as claimed in claim 1, wherein the weight of the graphene in the base material accounts for 1-5% of the weight of the base material, the weight of the nano molybdenum oxide accounts for 1-3%, and the metal oxide powder is: al (Al)2O3、MgO、Cr2O3And B2O3；Al2O310-20% of MgO, 10-20% of Cr2O35-15% by weight of B2O35-15% of the total weight, and the balance of SiO2。
3. The graphene-containing oxidation and decarbonization preventing coating according to claim 1, wherein the graphene is a single-layer graphene sheet and has a thickness of a nanometer order.
4. The graphene-containing oxidation and decarburization preventing paint as claimed in claim 1, wherein the nominal particle size of the nano molybdenum oxide is 30nm to 80 nm.
5. The graphene-containing oxidation and decarburization preventing coating as claimed in claim 1, wherein the amount of the sodium polyacrylate is 0.4 to 0.8% by weight based on the weight of water.
6. The method for preparing the coating material containing graphene with the function of preventing oxidation and decarburization as claimed in claim 1, wherein the graphene in the base material is pre-dispersed in water, and under the heating condition of 60 ℃ to 80 ℃, after being uniformly stirred, triethanolamine is added for assistance, the amount of the triethanolamine is 0.5 to 1.5 percent of the weight of the graphene, and the graphene pre-dispersion liquid is prepared by continuously and uniformly stirring under the heating condition of 60 ℃ to 80 ℃; mixing other components in the base material with water, uniformly stirring at the heating temperature of 40-60 ℃, slowly adding the graphene pre-dispersion liquid while continuously stirring, adding sodium polyacrylate after uniformly stirring, continuously and uniformly stirring at the temperature of 40-60 ℃, and slowly adding the binder.
CN202110533742.0A 2021-05-14 2021-05-14 Graphene-containing anti-oxidation decarbonization coating and preparation method thereof Pending CN113354963A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462859A (en) * 2009-01-16 2009-06-24 中国科学院过程工程研究所 High-temperature antioxidizing paint for lowering oxidation burning of steel in heating furnace
CN101705024A (en) * 2009-12-15 2010-05-12 武汉钢铁(集团)公司 High-temperature oxidation resistant coating for steel with high nickel content
CN101787228A (en) * 2010-01-28 2010-07-28 苏州工业园区和合共好企业管理顾问有限公司 Heat-resistant nano-paint used for surface performance optimization of nickel-chromium stainless steel piece
CN102453794A (en) * 2010-11-02 2012-05-16 中国科学院过程工程研究所 High-temperature decarburization-preventing coating material used for spring steel
EP3408334B1 (en) * 2016-01-29 2020-05-13 Tata Steel UK Limited Method to protect heat treated steel products against oxidation and decarburisation
CN112194954A (en) * 2019-07-08 2021-01-08 常州市大使涂料有限公司 Graphene epoxy zinc-rich coating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462859A (en) * 2009-01-16 2009-06-24 中国科学院过程工程研究所 High-temperature antioxidizing paint for lowering oxidation burning of steel in heating furnace
CN101705024A (en) * 2009-12-15 2010-05-12 武汉钢铁(集团)公司 High-temperature oxidation resistant coating for steel with high nickel content
CN101787228A (en) * 2010-01-28 2010-07-28 苏州工业园区和合共好企业管理顾问有限公司 Heat-resistant nano-paint used for surface performance optimization of nickel-chromium stainless steel piece
CN102453794A (en) * 2010-11-02 2012-05-16 中国科学院过程工程研究所 High-temperature decarburization-preventing coating material used for spring steel
EP3408334B1 (en) * 2016-01-29 2020-05-13 Tata Steel UK Limited Method to protect heat treated steel products against oxidation and decarburisation
CN112194954A (en) * 2019-07-08 2021-01-08 常州市大使涂料有限公司 Graphene epoxy zinc-rich coating

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李香琪: "《轮机工程材料》", vol. 1, 31 May 2010, 大连海事大学出版社, pages: 56 *

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