CN112500723A - High-temperature-resistant water-based inorganic gel coating and preparation method and application thereof - Google Patents
High-temperature-resistant water-based inorganic gel coating and preparation method and application thereof Download PDFInfo
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- CN112500723A CN112500723A CN202011372285.3A CN202011372285A CN112500723A CN 112500723 A CN112500723 A CN 112500723A CN 202011372285 A CN202011372285 A CN 202011372285A CN 112500723 A CN112500723 A CN 112500723A
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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
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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
- C09D1/10—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances lime
- C09D1/12—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances lime with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention discloses a high-temperature-resistant water-based inorganic gel coating. The coating consists of the following components: 25 to 50 percent of modified resin and 10 to 30 percent of M2(OH)X·nH2O, 1-5% of filler, 5-15% of rare earth oxide, 1-5% of cosolvent and 15-35% of water; wherein the modified resin is formed from M1(NO3)2The dimethyl diethanol ammonium and the phosphoric acid react to obtain the compound; m2Is Ca or Mg. The preparation method comprises the following steps: the raw materials are weighed according to the formula, and are stirred and mixed uniformly to obtain the coating. The coating obtained by the invention is coated on the surface of a metal material, is easy to form a film, has good toughness and adhesive force of the coating, and can obviously improveThe high temperature resistance of the surface of the metal material, the heat-resistant temperature of the formed coating can reach 1100 ℃, the high temperature chemical corrosion resistance of the coating is strong, the cost is low, and the coating can be used for large-scale production.
Description
Technical Field
The invention belongs to the field of coatings, and particularly relates to a high-temperature-resistant water-based inorganic gel coating as well as a preparation method and application thereof.
Background
In a high-temperature environment, the metal surface is damaged due to high-temperature chemical corrosion, so that the mechanical property is reduced, among the known measures, a high-temperature coating is one of effective measures for solving the high-temperature chemical corrosion, and the existing high-temperature-resistant anti-oxidation coatings mainly comprise the following components: (1) organic silicate coating: the organic silicate paint consists of glass material and organic polymer with heat resisting resin as base material. At present, the heat-resistant temperature of a common heat-resistant polymer can only reach 400 ℃, inorganic heat-resistant fillers can be added into the heat-resistant polymer, and the heat-resistant and oxidation-resistant performance of the coating is improved by a method of combining organic and inorganic structures. (2) Inorganic vitreous body type coating: the coating prepared from the inorganic vitreous body coating is gradually softened from a solid accumulation state to a semi-molten viscous state or even a molten state at a high temperature to form a compact molten film. The coating has certain protective capacity from softening until molten liquid phase appears, the density of the coating is increased, and the protective capacity is enhanced. Such coatings tend to resist high temperature oxidation during temporary hot working and therefore require self-spalling properties. (3) Oxide ceramic coating: silicate-incorporated SiO for coatings prepared from oxide ceramic coatings2The main film forming matter is added with various refractory ceramic oxide materials as stuffing, and the coating slurry is prepared through simple mechanical mixing.
The problems with these coatings are at present: the paint film is brittle, the toughness of the coating is poor, and the paint film is easy to crack at high temperature; the temperature resistance limit is low, the general heat resistance temperature of the prior organic silicon resin coating is 700 ℃, and a few coatings resistant to ultra-high temperature are only applied in the aerospace field, so the cost is high; high-temperature (150-; some research results aim at certain special steel (such as stainless steel, silicon steel and some special steel for aviation) and the cost of the coating is too high, so that the coating has no universal applicability.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant water-based inorganic gel coating. The specific technical scheme is as follows:
the high-temperature-resistant water-based inorganic gel coating is characterized by comprising the following components in percentage by mass: 25 to 50 percent of modified resin and 10 to 30 percent of M2(OH)X·nH2O, 1-5% of filler, 5-15% of rare earth oxide, 1-5% of cosolvent and 15-35% of water; wherein M is2Is Ca or Mg; the structure of the modified resin is as follows:
wherein M is1Is Cr, Mo, W, Y, La or Ce.
The preparation method of the modified resin comprises the following steps:
m is added into a reaction device1(NO3)2And dimethyl diethanolammonium, controlling the reaction temperature at 60 ℃, adding phosphoric acid after reacting for 1h, and continuing to react for 3h at the reaction temperature to obtain the modified resin; wherein M is1(NO3)2The molar ratio of dimethyl diethanolammonium and phosphoric acid is 1:1.05: 10.5. Wherein M is1Is Cr, Mo, W, Y, La or Ce.
Preferably, the filler is any one or a mixture of more than two of clay, kaolin, montmorillonite, vermiculite, pyrophyllite, mica and molecular sieve.
Preferably, the rare earth in the rare earth oxide is Y or La.
Preferably, the cosolvent is a monohydric alcohol, a dihydric alcohol, an alcohol ether or an alkenyl ether.
More preferably, the cosolvent is ethylene glycol, polyvinyl ether or polyethylene glycol ether.
The invention also aims to provide a preparation method of the high-temperature-resistant water-based inorganic gel coating. The specific technical scheme is as follows:
the preparation method of the high-temperature-resistant water-based inorganic gel coating comprises the following steps: weighing the materials in the components according to the mass percentage, and stirring and mixing uniformly to obtain the high-temperature-resistant water-based inorganic gel coating.
The invention also aims to provide application of the high-temperature-resistant water-based inorganic gel coating. The specific technical scheme is as follows:
the high-temperature-resistant water-based inorganic gel coating is used for improving the high-temperature resistance of the metal surface.
Preferably, the method of application comprises the steps of: the high-temperature-resistant water-based inorganic gel coating is coated on the surface of a metal material, then is cured for 0.5 to 2 hours at the temperature of between 25 and 40 ℃, and then is cured for 0.5 to 2 hours at the temperature of between 100 and 150 ℃.
The invention has the advantages of
The high-temperature-resistant water-based inorganic gel coating obtained by the invention is coated on the surface of a metal material, is easy to form a film, has good toughness and adhesive force, can obviously improve the high-temperature resistance of the surface of the metal material, can form a coating with the heat resistance temperature of 1100 ℃, has strong high-temperature chemical corrosion resistance, is low in cost, and can be used for large-scale production.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It is to be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
Formula of composition
Preparing the following components in percentage by mass:
modified resin: 45%, M1Is Cr
Filler (mica powder): 5 percent of
M2(OH)X·nH2O：20％，M2Is Ca
Rare earth oxide: 10% of rare earth is Y
Co-solvent (ethylene glycol): 3 percent of
Water: 17 percent of
Second, methods of making and using
M is added into a reaction device1(NO3)2And dimethyl diethanolammonium, controlling the reaction temperature at 60 ℃, adding phosphoric acid after reacting for 1h, and continuing to react for 3h at the reaction temperature; wherein M is1Is Cr, M1(NO3)2And the molar ratio of the dimethyl diethanolammonium to the phosphoric acid is 1:1.05:10.5, so as to prepare the modified resin.
Mixing the materials in the proportioning components according to the mass ratio, uniformly stirring to obtain the high-temperature-resistant water-based inorganic gel coating, storing at room temperature, coating, curing at 30 ℃ for 1h, and curing at 130 ℃ for 1 h.
Third, performance test
The coating obtained in the embodiment is coated on a cold-rolled steel plate, and through experiments and detection, a salt spray resistance experiment of the coating shows that no corrosion focus appears in 300h, the adhesive force is 1 grade, and the temperature resistance of the coating reaches 1150 ℃.
Example 2
Formula of composition
Preparing the following components in percentage by mass:
modified resin: 40%, M1Is Mo
Filler (kaolin): 5 percent of
M2(OH)X·nH2O：25％，M2Is Ca
Rare earth oxide: 5% of rare earth is Y
Cosolvent (polyvinyl ether): 3 percent of
Water: 22 percent
Second, methods of making and using
M is added into a reaction device1(NO3)2And dimethyl diethanolammonium, controlling the reaction temperature at 60 ℃, adding phosphoric acid after reacting for 1h, and continuing to react for 3h at the reaction temperature; wherein M is1Is Mo, M1(NO3)2Dimethyl esterThe molar ratio of diethanolammonium to phosphoric acid was 1:1.05:10.5 to obtain a modified resin.
Mixing the materials in the proportioning components according to the mass ratio, uniformly stirring to obtain the high-temperature-resistant water-based inorganic gel coating, storing at room temperature, coating, curing at 30 ℃ for 1h, and curing at 130 ℃ for 1 h.
Third, performance test
The coating obtained in the embodiment is coated on a cold-rolled steel plate, and experiments and detection show that no corrosion focus appears in a salt spray resistance experiment for 300h, the adhesive force is 1 grade, and the temperature resistance of the coating reaches 1130 ℃.
Example 3
Formula of composition
Preparing the following components in percentage by mass:
modified resin: 50%, M1Is Y
Filler (vermiculite): 3 percent of
M2(OH)X·nH2O：15％，M2Is Mg
Rare earth oxide: 8% of rare earth La
Co-solvent (ethylene glycol): 3 percent of
Water: 21 percent of
Second, methods of making and using
M is added into a reaction device1(NO3)2And dimethyl diethanolammonium, controlling the reaction temperature at 60 ℃, adding phosphoric acid after reacting for 1h, and continuing to react for 3h at the reaction temperature; wherein M is1Is Y, M1(NO3)2And the molar ratio of the dimethyl diethanolammonium to the phosphoric acid is 1:1.05:10.5, so as to prepare the modified resin.
Mixing the materials in the proportioning components according to the mass ratio, uniformly stirring to obtain the high-temperature-resistant water-based inorganic gel coating, storing at room temperature, coating, curing at 30 ℃ for 1h, and curing at 130 ℃ for 1 h.
Third, performance test
The coating obtained in the embodiment is coated on a cold-rolled steel plate, and experiments and detection show that no corrosion focus appears in a salt spray resistance experiment for 300h, the adhesive force is 1 grade, and the temperature resistance of the coating reaches 1140 ℃.
Example 4
Formula of composition
Preparing the following components in percentage by mass:
modified resin: 45%, M1Is Ce
Filler (montmorillonite): 5 percent of
M2(OH)X·nH2O：10％，M2Is Mg
Rare earth oxide: 7% of rare earth La
Cosolvent (polyethylene glycol ether): 3 percent of
Water: 30 percent of
Second, methods of making and using
M is added into a reaction device1(NO3)2And dimethyl diethanolammonium, controlling the reaction temperature at 60 ℃, adding phosphoric acid after reacting for 1h, and continuing to react for 3h at the reaction temperature; wherein M is1Is Ce, M1(NO3)2And the molar ratio of the dimethyl diethanolammonium to the phosphoric acid is 1:1.05:10.5, so as to prepare the modified resin.
Mixing the materials in the proportioning components according to the mass ratio, uniformly stirring to obtain the high-temperature-resistant water-based inorganic gel coating, storing at room temperature, coating, curing at 30 ℃ for 1h, and curing at 130 ℃ for 1 h.
Third, performance test
The coating obtained in the embodiment is coated on a cold-rolled steel plate, and experiments and detection show that no corrosion focus appears in a salt spray resistance experiment for 300h, the adhesive force is 1 grade, and the temperature resistance of the coating reaches 1120 ℃.
Claims (8)
1. The high-temperature-resistant water-based inorganic gel coating is characterized by comprising the following components in percentage by mass: 25 to 50 percent of modified resin and 10 to 30 percent of M2(OH)X·nH2O, 1-5% of filler, 5-15% of rare earth oxide, 1-5% of cosolvent and 15-35% of water; wherein M is2Is Ca or Mg; the structure of the modified resin is as follows:
wherein M is1Is Cr, Mo, W, Y, La or Ce.
2. The high-temperature-resistant aqueous inorganic gel coat according to claim 1, wherein the filler is any one or a mixture of two or more of clay, kaolin, montmorillonite, vermiculite, pyrophyllite, mica, and molecular sieves.
3. The high temperature resistant aqueous inorganic gel coat of claim 1, wherein the rare earth in the rare earth oxide is Y or La.
4. The high temperature resistant aqueous inorganic gel coat of claim 1, wherein the co-solvent is a monohydric alcohol, a dihydric alcohol, an alcohol ether, or an olefinic ether.
5. The high temperature resistant aqueous inorganic gel coat of claim 1, wherein the co-solvent is ethylene glycol, polyvinyl ether, or polyethylene glycol ether.
6. The method of preparing a high temperature resistant aqueous inorganic gel coat according to any of claims 1 to 5, comprising the steps of: weighing the materials in the components according to the mass percentage, and stirring and mixing uniformly to obtain the high-temperature-resistant water-based inorganic gel coating.
7. The high temperature resistant aqueous inorganic gel coat according to any one of claims 1 to 5, used for improving the high temperature resistance of metal surfaces.
8. Method for application according to claim 7, characterized in that it comprises the following steps: the high-temperature-resistant water-based inorganic gel coating is coated on the surface of a metal material, then is cured for 0.5 to 2 hours at the temperature of between 25 and 40 ℃, and then is cured for 0.5 to 2 hours at the temperature of between 100 and 150 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011372285.3A CN112500723A (en) | 2020-11-30 | 2020-11-30 | High-temperature-resistant water-based inorganic gel coating and preparation method and application thereof |
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| CN202011372285.3A CN112500723A (en) | 2020-11-30 | 2020-11-30 | High-temperature-resistant water-based inorganic gel coating and preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405802A (en) * | 2012-07-12 | 2013-11-27 | 绍兴立德生物科技有限公司 | Preparation method of polyurethane bandage with functions of sterilization and itch relief and bandage manufactured by method |
| CN104718161A (en) * | 2012-06-29 | 2015-06-17 | 环球油品公司 | Metallophosphate molecular sieves, method of preparation and use |
| CN106589297A (en) * | 2016-11-01 | 2017-04-26 | 北京理工大学 | High-efficient essence type aqueous polyurethane with flame retardation |
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2020
- 2020-11-30 CN CN202011372285.3A patent/CN112500723A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104718161A (en) * | 2012-06-29 | 2015-06-17 | 环球油品公司 | Metallophosphate molecular sieves, method of preparation and use |
| CN103405802A (en) * | 2012-07-12 | 2013-11-27 | 绍兴立德生物科技有限公司 | Preparation method of polyurethane bandage with functions of sterilization and itch relief and bandage manufactured by method |
| CN106589297A (en) * | 2016-11-01 | 2017-04-26 | 北京理工大学 | High-efficient essence type aqueous polyurethane with flame retardation |
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Application publication date: 20210316 |