CN114570627B - High-compactness long-acting anti-corrosion coating suitable for heating surface of garbage incineration boiler - Google Patents
High-compactness long-acting anti-corrosion coating suitable for heating surface of garbage incineration boiler Download PDFInfo
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- CN114570627B CN114570627B CN202210218935.1A CN202210218935A CN114570627B CN 114570627 B CN114570627 B CN 114570627B CN 202210218935 A CN202210218935 A CN 202210218935A CN 114570627 B CN114570627 B CN 114570627B
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- 238000000576 coating method Methods 0.000 title claims abstract description 88
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000005260 corrosion Methods 0.000 title claims abstract description 50
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 51
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 38
- 239000004917 carbon fiber Substances 0.000 claims abstract description 38
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000004927 clay Substances 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 11
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 10
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 5
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 239000006184 cosolvent Substances 0.000 claims abstract description 5
- 239000010432 diamond Substances 0.000 claims abstract description 5
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 5
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000019353 potassium silicate Nutrition 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 18
- 229910052622 kaolinite Inorganic materials 0.000 claims description 15
- 239000003973 paint Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002734 clay mineral Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 238000004056 waste incineration Methods 0.000 claims description 6
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- 229910052621 halloysite Inorganic materials 0.000 claims description 5
- -1 hydromica Chemical compound 0.000 claims description 5
- 229910052900 illite Inorganic materials 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 2
- 239000000843 powder Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler, which comprises a bottom coating, a buffer layer and a top coating; the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass: diamond micro; kaolin clay; a cosolvent; a dispersing agent; a leveling agent; an adhesive; a curing agent; a defoaming agent; the balance of deionized water; the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method: the mixed gas of methane and hydrogen is reacted at high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers. The surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass: an oxide; water glass; an auxiliary agent; a graphene; a curing agent; the balance of deionized water. The invention has the technical effects of corrosion resistance, high temperature resistance and good mechanical property.
Description
Technical Field
The invention relates to the technical field of anti-corrosion coatings, in particular to a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a waste incineration boiler.
Background
The garbage incinerator is equipment for incinerating garbage, the garbage burns in a hearth, becomes waste gas, enters a secondary combustion chamber, burns completely under forced combustion of a combustor, enters a spray dust remover, and is discharged into the atmosphere through a chimney after dust removal. The garbage incinerator consists of a garbage pretreatment system, an incineration system, a smoke biochemical dust removal system and a gas producer (auxiliary ignition incineration) and integrates automatic feeding, screening, drying, incineration, ash removal, dust removal and automatic control. Before practical application, the garbage incinerator needs to carry out corrosion prevention and heat resistance treatment on the heating surface in the hearth of the garbage incinerator so as to ensure the service life of the garbage incinerator.
Therefore, the invention of the long-acting anti-corrosion coating which has good corrosion resistance, high temperature resistance and mechanical property and is highly compact and suitable for the heating surface of the garbage incineration boiler is very necessary.
Disclosure of Invention
The invention aims to provide a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler so as to solve the problems in the background art.
In order to achieve the above purpose, the invention provides the following technical scheme: a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler comprises a bottom coating, a buffer layer and a top coating;
the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass:
the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method:
reacting a mixed gas of methane and hydrogen at a high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers;
the surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass:
preferably, the length of the chopped carbon fibers is less than or equal to 50cm.
Preferably, the oxide is one or a combination of more of nano-scale aluminum oxide, zirconium oxide, magnesium oxide, silicon dioxide and titanium dioxide.
Preferably, the kaolin clay is composed of clay consisting of kaolinite clay minerals and claystone.
Preferably, the kaolinite clay mineral is one or more of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz and feldspar.
The preparation method of the high-compactness long-acting anti-corrosion coating suitable for the heating surface of the waste incineration boiler specifically comprises the following steps:
step one: adding deionized water, cosolvent, dispersing agent, flatting agent and defoaming agent in the bottom coating in a mixing drum in proportion for stirring and mixing, then adding diamond micropowder and kaolin clay, stirring uniformly, adding an adhesive for viscosity adjustment, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain the bottom coating water-based paint for later use;
step two: uniformly spraying the water-based paint of the bottom coating onto a heating surface of a garbage incineration boiler through a spray gun, uniformly paving the chopped carbon fibers when the water-based paint of the bottom coating is not completely dried, and preparing a buffer layer until the chopped carbon fibers cannot be bonded in the bottom coating when the chopped carbon fibers are paved;
step three: adding deionized water and an auxiliary agent in a proportioning amount into a stirring barrel for stirring and mixing, then adding oxide, sodium silicate and graphene, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain a surface coating water-based paint for later use;
step four: and (3) uniformly spraying the prepared surface coating water-based paint on the surface of the buffer layer in the third step through a spray gun so as to completely cover the buffer layer.
Compared with the prior art, the invention has the beneficial effects that: the long-acting corrosion-resistant coating is characterized in that a base coat, a buffer layer and a surface coating are arranged, the coating is an adhesive layer to ensure the stability of integral bonding, the surface coating is an anti-corrosion layer to ensure the integral corrosion resistance, an intermediate reinforcing layer made of chopped carbon fiber is arranged between the adhesive layer and the anti-corrosion layer to ensure the integral mechanical property, the chopped carbon fiber is different from polyacrylonitrile-based or asphalt-based carbon fiber in structure, graphitization is easy, interlayer compounds are easy to form, and the intermediate reinforcing layer is respectively and stably combined with the adhesive layer and the anti-corrosion layer.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
In a first embodiment of the present invention,
a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler comprises a bottom coating, a buffer layer and a top coating;
the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass:
the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method:
the mixed gas of methane and hydrogen is reacted at high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers.
The surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass:
in this embodiment, the length of the chopped carbon fibers is equal to or less than 50cm.
In this embodiment, the oxide is one or a combination of several of nano-scale alumina, zirconia, magnesia, silica and titania.
In this example, the kaolin clay is composed of clay consisting of kaolinite clay minerals and claystone.
In this embodiment, the kaolinite clay mineral is one or more of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, and feldspar.
In a second embodiment of the present invention,
a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler comprises a bottom coating, a buffer layer and a top coating;
the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass:
the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method:
the mixed gas of methane and hydrogen is reacted at high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers.
The surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass:
in this embodiment, the length of the chopped carbon fibers is equal to or less than 50cm.
In this embodiment, the oxide is one or a combination of several of nano-scale alumina, zirconia, magnesia, silica and titania.
In this example, the kaolin clay is composed of clay consisting of kaolinite clay minerals and claystone.
In this embodiment, the kaolinite clay mineral is one or more of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, and feldspar.
In a third embodiment of the present invention,
a high-compactness long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler comprises a bottom coating, a buffer layer and a top coating;
the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass:
the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method:
the mixed gas of methane and hydrogen is reacted at high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers.
The surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass:
in this embodiment, the length of the chopped carbon fibers is equal to or less than 50cm.
In this embodiment, the oxide is one or a combination of several of nano-scale alumina, zirconia, magnesia, silica and titania.
In this example, the kaolin clay is composed of clay consisting of kaolinite clay minerals and claystone.
In this embodiment, the kaolinite clay mineral is one or more of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, and feldspar.
The preparation method of the high-compactness long-acting anti-corrosion coating suitable for the heating surface of the waste incineration boiler specifically comprises the following steps:
step one: adding deionized water, cosolvent, dispersing agent, flatting agent and defoaming agent in the bottom coating in a mixing drum in proportion for stirring and mixing, then adding diamond micropowder and kaolin clay, stirring uniformly, adding an adhesive for viscosity adjustment, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain the bottom coating water-based paint for later use;
step two: uniformly spraying the water-based paint of the bottom coating onto a heating surface of a garbage incineration boiler through a spray gun, uniformly paving the chopped carbon fibers when the water-based paint of the bottom coating is not completely dried, and preparing a buffer layer until the chopped carbon fibers cannot be bonded in the bottom coating when the chopped carbon fibers are paved;
step three: adding deionized water and an auxiliary agent in a proportioning amount into a stirring barrel for stirring and mixing, then adding oxide, sodium silicate and graphene, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain a surface coating water-based paint for later use;
step four: and (3) uniformly spraying the prepared surface coating water-based paint on the surface of the buffer layer in the third step through a spray gun so as to completely cover the buffer layer.
Experimental analysis: the long-acting anti-corrosion coating prepared in the first embodiment, the second embodiment and the third embodiment and the anti-corrosion coating in the prior art are respectively subjected to anti-corrosion, high temperature resistance and mechanical property detection, and the detection method and the detection result are shown in the following table:
compared with the prior art: the long-acting corrosion-resistant coating is characterized in that a base coat, a buffer layer and a surface coating are arranged, the coating is an adhesive layer to ensure the stability of integral bonding, the surface coating is an anti-corrosion layer to ensure the integral corrosion resistance, an intermediate reinforcing layer made of chopped carbon fiber is arranged between the adhesive layer and the anti-corrosion layer to ensure the integral mechanical property, the chopped carbon fiber is different from polyacrylonitrile-based or asphalt-based carbon fiber in structure, graphitization is easy, interlayer compounds are easy to form, and the intermediate reinforcing layer is respectively and stably combined with the adhesive layer and the anti-corrosion layer.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (3)
1. A high compact long-acting anti-corrosion coating suitable for a heating surface of a garbage incineration boiler is characterized in that: comprises a bottom coating layer, a buffer layer and a top coating layer;
the bottom coating is an adhesive layer and is formed by coating the following raw materials in percentage by mass:
30-40% of diamond micro powder;
10-20% of kaolin clay;
3-5% of cosolvent;
1-3% of a dispersing agent;
6-8% of a leveling agent;
2-4% of an adhesive;
0.8-1% of a curing agent;
1-2% of a defoaming agent;
the balance of deionized water; the kaolinite clay mineral is one or more of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz and feldspar;
the buffer layer is an intermediate reinforcing layer made of chopped carbon fibers, and the chopped carbon fibers are prepared by the following method:
reacting a mixed gas of methane and hydrogen at a high temperature of 1000 ℃ in the presence of a catalyst to prepare discontinuous chopped carbon fibers;
the surface coating is an anti-corrosion layer, and the anti-corrosion layer is a high-temperature-resistant graphene anti-corrosion coating which is formed by coating the following raw materials in percentage by mass:
20-30% of oxide;
20-30% of water glass;
8-10% of an auxiliary agent;
3-5% of graphene;
0.8-1% of a curing agent;
the balance of deionized water;
the oxide is one or a combination of more of nano-scale aluminum oxide, zirconium oxide, magnesium oxide, silicon dioxide and titanium dioxide;
the preparation method of the high-compactness long-acting anti-corrosion coating suitable for the heating surface of the waste incineration boiler specifically comprises the following steps:
step one: adding deionized water, cosolvent, dispersing agent, flatting agent and defoaming agent in the bottom coating in a mixing drum in proportion for stirring and mixing, then adding diamond micropowder and kaolin clay, stirring uniformly, adding an adhesive for viscosity adjustment, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain the bottom coating water-based paint for later use;
step two: uniformly spraying the water-based paint of the bottom coating onto a heating surface of a garbage incineration boiler through a spray gun, uniformly paving the chopped carbon fibers when the water-based paint of the bottom coating is not completely dried, and preparing a buffer layer until the chopped carbon fibers cannot be bonded in the bottom coating when the chopped carbon fibers are paved;
step three: adding deionized water and an auxiliary agent in a proportioning amount into a stirring barrel for stirring and mixing, then adding oxide, sodium silicate and graphene, and adding a curing agent after stirring and defoaming or vacuum defoaming to obtain a surface coating water-based paint for later use;
step four: and (3) uniformly spraying the prepared surface coating water-based paint on the surface of the buffer layer in the third step through a spray gun so as to completely cover the buffer layer.
2. A highly dense long-acting corrosion resistant coating suitable for a heated surface of a waste incineration boiler as claimed in claim 1, wherein: the length of the chopped carbon fiber is less than or equal to 50cm.
3. A highly dense long-acting corrosion resistant coating suitable for a heated surface of a waste incineration boiler as claimed in claim 1, wherein: the kaolin clay is composed of clay and claystone composed of kaolinite clay minerals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210218935.1A CN114570627B (en) | 2022-03-07 | 2022-03-07 | High-compactness long-acting anti-corrosion coating suitable for heating surface of garbage incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106810964A (en) * | 2017-01-25 | 2017-06-09 | 山东凯盛新材料股份有限公司 | High heat conduction, vacuum-resistant, high-temperature resistant anti-corrosive coating |
| CN108610676A (en) * | 2016-12-08 | 2018-10-02 | 辽宁法库陶瓷工程技术研究中心 | A kind of high temperature resistant graphene corrosion-inhibiting coating and preparation method thereof |
| CN110552271A (en) * | 2019-09-27 | 2019-12-10 | 佛山科学技术学院 | anti-skid pavement structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108610676A (en) * | 2016-12-08 | 2018-10-02 | 辽宁法库陶瓷工程技术研究中心 | A kind of high temperature resistant graphene corrosion-inhibiting coating and preparation method thereof |
| CN106810964A (en) * | 2017-01-25 | 2017-06-09 | 山东凯盛新材料股份有限公司 | High heat conduction, vacuum-resistant, high-temperature resistant anti-corrosive coating |
| CN110552271A (en) * | 2019-09-27 | 2019-12-10 | 佛山科学技术学院 | anti-skid pavement structure and construction method thereof |
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| 李卫星等.高岭土.《珍珠流淌—长江流域的物产宝藏》.长江出版社,2014, * |
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