CN116925581A - High-temperature-resistant coating and preparation method thereof - Google Patents
High-temperature-resistant coating and preparation method thereof Download PDFInfo
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- CN116925581A CN116925581A CN202310975674.2A CN202310975674A CN116925581A CN 116925581 A CN116925581 A CN 116925581A CN 202310975674 A CN202310975674 A CN 202310975674A CN 116925581 A CN116925581 A CN 116925581A
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- 238000000576 coating method Methods 0.000 title claims abstract description 76
- 239000011248 coating agent Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000945 filler Substances 0.000 claims abstract description 36
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 33
- 239000003381 stabilizer Substances 0.000 claims abstract description 33
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 239000003085 diluting agent Substances 0.000 claims abstract description 17
- 239000003973 paint Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 150000002484 inorganic compounds Chemical class 0.000 claims description 19
- 229910010272 inorganic material Inorganic materials 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 5
- 230000006750 UV protection Effects 0.000 claims description 5
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000002341 toxic gas Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010292 electrical insulation Methods 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000314 lubricant Substances 0.000 abstract 5
- 238000000034 method Methods 0.000 description 5
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910001598 chiastolite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- -1 dimethyl isobutyl Chemical group 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052851 sillimanite Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
- 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
-
- 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
- C09D7/65—Additives macromolecular
Abstract
The invention relates to the technical field of high-temperature resistant paint, and discloses a high-temperature resistant paint which comprises the following components in parts by weight: alumina: 30-40 parts of a lubricant; aluminum silicate: 20-30 parts of a lubricant; silica: 15-25 parts of a lubricant; silicon carbide: 10-20 parts of a lubricant; and (2) a binder: 5-10 parts; 5-10 parts of auxiliary agent; a diluent: 5-10 parts; high temperature stabilizer: 6-16 parts; and (3) heat-resistant filler: 8-17 parts of a lubricant; high temperature resistant resin: 10-15 parts. The coating disclosed by the invention has good high-temperature resistance and abrasion resistance, so that the coating can be used for protecting various high-temperature equipment and parts and has a good market prospect.
Description
Technical Field
The invention relates to the technical field of high-temperature resistant coatings, in particular to a high-temperature resistant coating and a preparation method thereof.
Background
With the development of modern manufacturing industry, the high temperature industry has become an indispensable field, and many high temperature devices and components, such as hearths, boilers, turbines, jet engines, etc., are corroded by various extreme environments such as high temperature corrosion, oxidation and abrasion during operation, so that a material capable of effectively protecting the devices and components is needed, and the paint is a multifunctional material capable of forming a protective film on the surface of an object, thereby improving the performance of the object;
most of the existing high-temperature coatings are based on polymers or ceramics, but the materials have problems of thermal decomposition, oxidation and the like at extremely high temperature, so that equipment and parts cannot be effectively protected;
for this purpose, a high temperature resistant coating and a method for its preparation are proposed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-temperature-resistant coating and a preparation method thereof.
Technical proposal
In order to achieve the above purpose, the present invention provides the following technical solutions: the high-temperature-resistant coating consists of the following components in parts by weight:
alumina: 30-40 parts
Aluminum silicate: 20-30 parts
Silica: 15-25 parts
Silicon carbide: 10-20 parts
And (2) a binder: 5-10 parts
5-10 parts of auxiliary agent
A diluent: 5-10 parts
High temperature stabilizer: 6-16 parts
And (3) heat-resistant filler: 8-17 parts
High temperature resistant resin: 10-15 parts.
Preferably, the alumina used, also known as alumina powder, is an inorganic compound of the formula Al 2 O 3 It is a white powder; the alumina has excellent thermal performance and chemical stability, and can be used for preparing high-temperature materials.
Preferably, the aluminum silicate used is an inorganic compound of the formula Al2SiO5, also known as rock-like aluminosilicate, which is a white powdery substance; aluminum silicate is similar to other silicate materials, has good thermal stability and chemical stability, and does not generate toxic gas at high temperature, so that the aluminum silicate is widely applied to the high-temperature industrial field, and meanwhile, the aluminum silicate has strong adsorption performance and can be used for purifying water and air.
Preferably, the silicon carbide used, also known as silicon carbide ceramic, has a particle size of 800-1500 mesh. Is an inorganic compound, has a chemical formula of SiC, and is a material similar to diamond and having extremely high crystal hardness; silicon carbide has the characteristics of high strength, high hardness, high thermal conductivity, high thermal stability and corrosion resistance.
Preferably, the high-temperature stabilizer can enhance the oxidation resistance and ultraviolet resistance of the coating, prolong the service life of the coating in a high-temperature environment, and commonly used high-temperature stabilizers comprise organosilicon high-temperature stabilizers and phosphate high-temperature stabilizers.
Preferably, the heat-resistant filler can be added with a certain amount of high-temperature-resistant filler to improve the heat stability of the coating, such as high silica filler, ceramic filler, graphite filler and the like of the hollow microsphere, and the filler can reduce the heat conduction between the coating and a substrate and improve the high-temperature resistance of the coating.
Preferably, the organic silicone resin is high-temperature-resistant high-grafting crosslinking organic silicone resin with high molecular weight, and can be used as a base material of the coating to enhance the high-temperature resistance of the coating.
Preferably, the binder used is a medium molecular weight organic resin material such as polyimide, acrylate, phenolic resin, and the like.
Preferably, the auxiliary agent is a high molecular wetting agent, a dispersing agent, an anti-settling agent, and the like.
Preferably, the diluent used is a medium rate solvent such as xylene, trimethylbenzene, odorless kerosene, dimethyl isobutyl ketone, etc.
A preparation method of the high-temperature-resistant paint comprises the following steps:
s1, firstly, before preparing a coating, screening and evaluating required binders, auxiliary agents, diluents, high-temperature stabilizers, heat-resistant fillers and high-temperature-resistant resins to determine the optimal addition amount and type;
s2, uniformly mixing aluminum oxide, aluminum silicate and silicon dioxide, and adding a certain amount of diluent into a container;
s3, stirring the mixture at a high speed to uniformly disperse the mixture;
s4, adding silicon carbide into the mixture, and stirring at a high speed until the silicon carbide is uniformly mixed;
s5, adding a binder, an auxiliary agent, a high-temperature stabilizer, a heat-resistant filler and high-temperature-resistant resin, and uniformly stirring the mixture at a high speed;
and S6, brushing or spraying the prepared coating on the surface of equipment or a part to be protected, and drying at high temperature.
Preferably, in S6, the temperature is controlled between 300 and 500 ℃.
Advantageous effects
The invention provides a high-temperature-resistant coating and a preparation method thereof, and the high-temperature-resistant coating has the following beneficial effects:
1. the coating contains high-hardness materials such as silicon carbide, so that the coating has excellent wear resistance and can effectively protect equipment and components;
2. because the components such as alumina, aluminum silicate and silicon dioxide in the coating have extremely high melting point and corrosion resistance, the coating has good high temperature resistance, and can still keep stability and durability at extremely high temperature;
3. the preparation method of the coating is simple, easy to operate, and the coating is uniform and firm and can be used on equipment and parts with different shapes;
4. the coating disclosed by the invention has good high-temperature resistance and abrasion resistance, so that the coating can be used for protecting various high-temperature equipment and parts and has a good market prospect.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Further explaining a technical scheme provided by the invention:
example 1
The high-temperature-resistant coating consists of the following components in parts by weight:
alumina: 30 parts of
Aluminum silicate: 20 parts of
Silica: 15 parts of
Silicon carbide: 10 parts of
And (2) a binder: 5 parts of
Auxiliary agent: 5 parts of
A diluent: 5 parts of
High temperature stabilizer: 6 parts of
And (3) heat-resistant filler: 8 parts of
High temperature resistant resin: 10 parts.
In a specific embodiment, the alumina used, also known as alumina powder, is an inorganic compound of the formula Al 2 O 3 It is a white powder; the alumina has excellent thermal performance and chemical stability, and can be used for preparing high-temperature materials.
In particular embodiments, the aluminum silicate used is an inorganic compound of the formula Al 2 SiO 5 Also known as rock-like aluminosilicates, which are a white powdery substance; aluminum silicate is similar to other silicate materials and has good thermal and chemical stability.
In a specific embodiment, the silica used is an inorganic compound of the formula SiO 2 It is a white powdery substance, widely existing in quartz, glass, graphite substances in nature, and is also an important component of soil and some organisms.
In particular embodiments, the silicon carbide used, also known as silicon carbide ceramic, is an inorganic compound of the formula SiC, a material of extremely high crystalline hardness, similar to diamond; silicon carbide has the characteristics of high strength, high hardness, high thermal conductivity, high thermal stability and corrosion resistance.
In the specific embodiment, the high-temperature stabilizer can enhance the oxidation resistance and ultraviolet resistance of the coating, prolong the service life of the coating in a high-temperature environment, and the common high-temperature stabilizer is an organosilicon high-temperature stabilizer.
In the specific embodiment, the heat-resistant filler is selected as a high silica filler, and the heat conduction between the coating and the substrate can be reduced through the high silica filler, so that the high temperature resistance of the coating is improved.
In a specific embodiment, the high-temperature resistant resin is used as a base material of the coating, so that the high-temperature resistance of the coating can be enhanced, and polyimide is selected.
A preparation method of the high-temperature-resistant paint comprises the following steps:
s1, firstly, before preparing a coating, screening and evaluating required binders, auxiliary agents, diluents, high-temperature stabilizers, heat-resistant fillers and high-temperature-resistant resins to determine the optimal addition amount and type;
s2, uniformly mixing aluminum oxide, aluminum silicate and silicon dioxide, and adding a certain amount of diluent into a container;
s3, stirring the mixture at a high speed to uniformly disperse the mixture;
s4, adding silicon carbide into the mixture, and stirring at a high speed until the silicon carbide is uniformly mixed;
s5, adding a binder, an auxiliary agent, a high-temperature stabilizer, a heat-resistant filler and high-temperature-resistant resin, and uniformly stirring the mixture at a high speed;
and S6, brushing or spraying the prepared coating on the surface of equipment or a part to be protected, and drying at high temperature.
In a specific embodiment, in S6, the temperature is controlled at 300 ℃.
Example 2
The high-temperature-resistant coating consists of the following components in parts by weight:
alumina: 35 parts of
Aluminum silicate: 25 parts of
Silica: 20 parts of
Silicon carbide: 15 parts of
And (2) a binder: 7 parts of
Auxiliary agent: 8 parts of
A diluent: 7 parts of
High temperature stabilizer: 12 parts of
And (3) heat-resistant filler: 12 parts of
High temperature resistant resin: 13 parts.
In a specific embodiment, the alumina used, also known as alumina powder, is an inorganic compound of the formula Al 2 O 3 It is a white powder; the alumina has excellent thermal performance and chemical stability, and can be used for preparing high-temperature materials.
In particular embodiments, the aluminum silicate used is an inorganic compound of the formula Al 2 SiO 5 Also known as rock-like aluminosilicates, which are a white powdery substance; aluminum silicate is similar to other silicate materials and has good thermal and chemical stability.
In a specific embodiment, the silica used is an inorganic compound of the formula SiO 2 It is a white powdery substance, widely existing in quartz, glass, graphite substances in nature, and is also an important component of soil and some organisms.
In a specific embodiment, the silicon carbide used, also known as silicon carbide ceramic, is an inorganic compound of the formula SiC.
In the specific embodiment, the high-temperature stabilizer can enhance the oxidation resistance and ultraviolet resistance of the coating, prolong the service life of the coating in a high-temperature environment, and the common high-temperature stabilizer is an organosilicon high-temperature stabilizer.
In the specific embodiment, the heat-resistant filler is selected as a high silica filler, and the heat conduction between the coating and the substrate can be reduced through the high silica filler, so that the high temperature resistance of the coating is improved.
In a specific embodiment, the high-temperature resistant resin is used as a base material of the coating, so that the high-temperature resistance of the coating can be enhanced, and polyimide is selected.
A preparation method of the high-temperature-resistant paint comprises the following steps:
s1, firstly, before preparing a coating, screening and evaluating required binders, auxiliary agents, diluents, high-temperature stabilizers, heat-resistant fillers and high-temperature-resistant resins to determine the optimal addition amount and type;
s2, uniformly mixing aluminum oxide, aluminum silicate and silicon dioxide, and adding a certain amount of diluent into a container;
s3, stirring the mixture at a high speed to uniformly disperse the mixture;
s4, adding silicon carbide into the mixture, and stirring at a high speed until the silicon carbide is uniformly mixed;
s5, adding a binder, an auxiliary agent, a high-temperature stabilizer, a heat-resistant filler and high-temperature-resistant resin, and uniformly stirring the mixture at a high speed;
and S6, brushing or spraying the prepared coating on the surface of equipment or a part to be protected, and drying at high temperature.
In a specific embodiment, in S6, the temperature is controlled at 750 ℃.
Example 3
The high-temperature-resistant coating consists of the following components in parts by weight:
alumina: 40 parts of
Aluminum silicate: 30 parts of
Silica: 25 parts of
Silicon carbide: 20 parts of
And (2) a binder: 10 parts of
Auxiliary agent: 10 parts of
A diluent: 10 parts of
High temperature stabilizer: 16 parts of
And (3) heat-resistant filler: 17 parts of
High temperature resistant resin: 15 parts.
In a specific embodiment, the alumina used, also called alumina powder, is an inorganic compound of formula Al2O3, which is a white powder; the alumina has excellent thermal performance and chemical stability, and can be used for preparing high-temperature materials.
In particular embodiments, the aluminum silicate used is an inorganic compound of the formula Al 2 SiO 5 Also known as rock-like aluminosilicates, which are a white powdery substance; aluminum silicate is similar to other silicate materials and has good thermal and chemical stability.
In a specific embodiment, the silica used is an inorganic compound of the formula SiO 2 It is a white powdery substance, widely existing in quartz, glass, graphite substances in nature, and is also an important component of soil and some organisms.
In a specific embodiment, the silicon carbide used, also known as silicon carbide ceramic, is an inorganic compound of the formula SiC.
In the specific embodiment, the high-temperature stabilizer can enhance the oxidation resistance and ultraviolet resistance of the coating, prolong the service life of the coating in a high-temperature environment, and the common high-temperature stabilizer is an organosilicon high-temperature stabilizer.
In the specific embodiment, the heat-resistant filler is selected as a high silica filler, and the heat conduction between the coating and the substrate can be reduced through the high silica filler, so that the high temperature resistance of the coating is improved.
In a specific embodiment, the high-temperature resistant resin is used as a base material of the coating, so that the high-temperature resistance of the coating can be enhanced, and polyimide is selected.
A preparation method of the high-temperature-resistant paint comprises the following steps:
s1, firstly, before preparing a coating, screening and evaluating required binders, auxiliary agents, diluents, high-temperature stabilizers, heat-resistant fillers and high-temperature-resistant resins to determine the optimal addition amount and type;
s2, uniformly mixing aluminum oxide, aluminum silicate and silicon dioxide, and adding a certain amount of diluent into a container;
s3, stirring the mixture at a high speed to uniformly disperse the mixture;
s4, adding silicon carbide into the mixture, and stirring at a high speed until the silicon carbide is uniformly mixed;
s5, adding a binder, an auxiliary agent, a high-temperature stabilizer, a heat-resistant filler and high-temperature-resistant resin, and uniformly stirring the mixture at a high speed;
and S6, brushing or spraying the prepared coating on the surface of equipment or a part to be protected, and drying at high temperature.
In a specific embodiment, in S6, the temperature is controlled at 500 ℃.
In summary, by carrying out the practical preparation through the three embodiments, the coating disclosed by the invention has good high-temperature resistance and abrasion resistance, so that the coating can be used for protecting various high-temperature equipment and components, and has a particularly good market prospect.
The finished products of example 1, example 2 and example 3 were selected for performance testing as follows:
it is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The high-temperature-resistant coating is characterized by comprising the following components in parts by weight:
alumina: 30-40 parts
Aluminum silicate: 20-30 parts
Silica: 15-25 parts
Silicon carbide: 10-20 parts
And (2) a binder: 5-10 parts
5-10 parts of auxiliary agent
A diluent: 5-10 parts
High temperature stabilizer: 6-16 parts
And (3) heat-resistant filler: 8-17 parts
High temperature resistant resin: 10-15 parts.
2. A high temperature resistant coating according to claim 1, wherein the alumina used, also known as alumina powder, is an inorganic compound of the formula Al 2 O 3 It is a white powder; the alumina has excellent thermal performance and chemical stability, and can be used for preparing high-temperature materials.
3. A high temperature resistant coating according to claim 1, wherein the aluminum silicate used is an inorganic compound of the formula Al 2 SiO 5 Also known as rock-like aluminosilicates, which are a white powdery substance; aluminum silicate is similar to other silicate materials, has good thermal stability and chemical stability, and does not generate toxic gas at high temperature, so that the aluminum silicate is widely applied to the high-temperature industrial field, and meanwhile, the aluminum silicate has strong adsorption performance and can be used for purifying water and air.
4. A high temperature resistant coating according to claim 1, wherein the silica used is an inorganic compound of the formula SiO 2 The glass is a white powdery substance which is widely existing in quartz, glass and graphite substances in the natural world, is also an important component of soil and some organisms, and has high thermal stability, electrical insulation, corrosion resistance and biocompatibility.
5. A high temperature resistant coating according to claim 1, characterized in that the silicon carbide used, also called silicon carbide ceramic, is an inorganic compound.
6. The high temperature resistant coating according to claim 1, wherein the high temperature stabilizer can enhance the oxidation resistance and ultraviolet resistance of the coating, prolong the service life of the coating in high temperature environment, and commonly used high temperature stabilizers comprise organosilicon high temperature stabilizers and phosphate high temperature stabilizers.
7. A high temperature resistant coating according to claim 1, wherein the heat resistant filler is added with a high temperature resistant filler to improve the heat stability of the coating, such as high silica filler, ceramic filler, graphite filler, which reduces the heat conduction between the coating and the substrate and improves the high temperature resistance of the coating.
8. A high temperature resistant coating according to claim 1, characterized in that the high temperature resistant resin used as a base material of the coating is capable of enhancing the resistance of the coating to high temperatures, such as polyimide, acrylate, phenolic resin.
9. The high temperature resistant coating according to claim 1, wherein the preparation method comprises the following steps:
s1, firstly, before preparing a coating, screening and evaluating required binders, auxiliary agents, diluents, high-temperature stabilizers, heat-resistant fillers and high-temperature-resistant resins to determine the optimal addition amount and type;
s2, uniformly mixing aluminum oxide, aluminum silicate and silicon dioxide, and adding a certain amount of diluent into a container;
s3, stirring the mixture at a high speed to uniformly disperse the mixture;
s4, adding silicon carbide into the mixture, and stirring at a high speed until the silicon carbide is uniformly mixed;
s5, adding a binder, an auxiliary agent, a high-temperature stabilizer, a heat-resistant filler and high-temperature-resistant resin, and uniformly stirring the mixture at a high speed;
and S6, brushing or spraying the prepared coating on the surface of equipment or a part to be protected, and drying at high temperature.
10. The high temperature resistant paint as claimed in claim 9, wherein in S6, the temperature is controlled to 300-500 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310975674.2A CN116925581A (en) | 2023-08-04 | 2023-08-04 | High-temperature-resistant coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310975674.2A CN116925581A (en) | 2023-08-04 | 2023-08-04 | High-temperature-resistant coating and preparation method thereof |
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- 2023-08-04 CN CN202310975674.2A patent/CN116925581A/en active Pending
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