CN113201269B - Antifouling and anticorrosive profile steel cantilever positioning device of contact network and processing method - Google Patents
Antifouling and anticorrosive profile steel cantilever positioning device of contact network and processing method Download PDFInfo
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- CN113201269B CN113201269B CN202110393233.2A CN202110393233A CN113201269B CN 113201269 B CN113201269 B CN 113201269B CN 202110393233 A CN202110393233 A CN 202110393233A CN 113201269 B CN113201269 B CN 113201269B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
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- 229910000278 bentonite Inorganic materials 0.000 description 7
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
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- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- 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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a fouling-resistant and corrosion-resistant section steel cantilever positioning device of a contact network and a processing method, and the device is characterized in that: the outer surface of part or all of the parts is plated with a hot dip anti-corrosion coating, the outer surface of the hot dip anti-corrosion coating is coated with a dirt-repellent composite coating, and the dirt-repellent composite coating is an anti-corrosion conductive dirt-repellent coating. On the premise of not influencing the surface conductivity of the contact net component, the coating with the dirt-resisting function is prepared on the hot-dip galvanizing or GalFan alloy anticorrosive coating, so that the deposition of corrosive pollutants in the tunnel on the surface of the contact net component is reduced, the overall anticorrosive performance of the steel cantilever positioning device is improved, and the service life of the steel cantilever positioning device is prolonged.
Description
Technical Field
The invention belongs to the field of steel wrists of electrified railway contact networks, and particularly relates to a dirt-repellent anticorrosive steel cantilever positioning device and a processing method of a contact network.
Background
The rail transit high-speed railway is an important component of a transportation hub in China, wherein the rail transit high-speed railway mostly passes through eastern coastal cities, and higher requirements are provided for the corrosion resistance and the service life of high-speed railway equipment under severe environmental conditions such as offshore marine salt spray, seriously polluted industrial atmosphere, dust and the like. Especially, the steel cantilever positioning device is used as a quite important component part in the high-speed rail gasification facility, and salt spray and adhered dirt corrosion directly influence the running safety and the running cost of the high-speed rail.
The traditional steel cantilever positioning device adopts the ways of anodic oxidation and hot dip galvanizing to prepare an anticorrosive coating on the surface of a substrate. However, the method cannot adapt to the offshore severe corrosive environment, and meanwhile, various corrosive media such as dust and the like are easily accumulated on the surface of the steel cantilever positioning device, so that a great potential safety hazard is caused to the operation of high-speed rails.
Therefore, the technical scheme of the dirt-repellent coating is adopted on the surface, so that the dust deposition is reduced, the corrosion resistance of the coating is improved, and the service life and the maintenance period of the high-speed rail contact net component are prolonged.
At present, the conventional dirt-repellent coating is mainly organic silicon, organic fluorine silicon, fluorocarbon and other coatings, has certain insulativity, can influence the conductivity of a contact net due to the use of the coatings in a contact net assembly, and the dirt-repellent coating suitable for the use requirement of the high-speed rail contact net assembly needs to have conductivity at the same time, and related coating technologies and products are not available at present.
Therefore, the development of the antifouling and corrosion-resistant steel cantilever positioning device and the processing method of the contact net is imperative for the surface protection of the steel component of the contact net under the harsh environment conditions of offshore and dust.
Disclosure of Invention
Aiming at least one of the above defects or improvement needs of the prior art, the key technical difficulties to be solved by the invention comprise:
1. at present, in offshore environment, primer is simply prepared on the surface of the steel cantilever positioning device to achieve the purpose of on-line service life of the touch screen steel cantilever, but in a dust environment, dust on the surface of the steel cantilever positioning device is seriously precipitated, operation and maintenance are difficult, and meanwhile corrosion of the primer is accelerated.
2. The dirt-repellent composite coating does not influence the conductivity of the contact network cantilever positioning device, so the key problem to be solved by the invention is the good conductivity of the dirt-repellent composite coating cantilever positioning device.
3. The third key technical problem solved by the patent is that the anti-corrosion capability of the original surface protective coating system cannot be reduced by the anti-fouling coating.
In order to achieve the above object, according to one aspect of the present invention, there is provided a fouling-resistant corrosion-resistant steel cantilever positioning device for a contact net, wherein:
the outer surface of part or all parts of the contact net steel wrist arm positioning device is plated with a hot dip anti-corrosion coating, the outer surface of the hot dip anti-corrosion coating is coated with a dirt-repellent composite coating, and the dirt-repellent composite coating is anti-corrosion conductive dirt-repellent paint.
Further preferably, the anti-corrosion conductive fouling-resistant coating comprises the following components in parts by mass:
10-20 parts of film forming resin, 55-65 parts of organic silicon monomer, 0.5-2.5 parts of cross-linking agent, 5-10 parts of interface adhesive, 0.1-0.3 part of catalyst, 30-60 parts of conductive filler, 1-3 parts of corrosion inhibition passivator, 0.2-0.4 part of directional distribution agent, 3-6 parts of anti-settling agent, 10-20 parts of solvent, 0.3-0.8 part of defoaming agent and 5-20 parts of pigment and filler;
wherein the film-forming resin is organic silicon modified bisphenol A epoxy resin.
Further preferably, the organosilicon monomer is selected from one or any combination of methyltriethoxysilane, methyltrichlorosilane, propyltrichlorosilane and dimethyldichlorosilane.
Further preferably, the cross-linking agent is one or a combination of ethyl orthosilicate and methyl orthosilicate.
Further preferably, the interface adhesive is aminopropyltriethoxysilane.
Further preferably, the catalyst is one or any combination of dibutyltin dilaurate, an organic zinc catalyst and an organic bismuth catalyst.
Further preferably, the conductive filler is aluminum flake with a flake diameter of about 1 μm.
Further preferably, the corrosion inhibition passivating agent is one or any combination of sodium molybdate, cerium nitrate and borate.
Further preferably, the orientation arrangement agent is polyvinylpyrrolidone.
Further preferably, the anti-settling agent is organic bentonite.
Further preferably, the defoaming agent is polydimethylsiloxane-type or polyether-type or higher alcohol-type defoaming agent.
Further preferably, the pigment filler is an anti-rust pigment.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for processing a dirty and corrosion resistant steel cantilever positioning device of a contact net, comprising the steps of:
s1, performing pre-plating treatment of hot dip plating on the surfaces of the parts of the contact net steel cantilever positioning device;
s2, performing hot dip coating on the surface of the part after the pre-plating treatment is finished to prepare a hot dip coating anti-corrosion coating;
s3, performing post-plating treatment of hot dip plating;
s4, preparing the dirt-repellent composite coating layer of the claim 1 on the surface of the hot dip anti-corrosion coating;
and S5, completing the assembly of the contact net steel cantilever positioning device.
Further preferably, in step S1, the step of the pre-plating treatment of hot dip plating includes: degreasing, washing, pickling, washing, dipping in a plating assistant solvent, and drying and preheating.
Further preferably, in step S2, the hot-dip anti-corrosion coating is a hot-dip galvanized anti-corrosion coating.
Further preferably, in step S2, the hot-dip anti-corrosion coating is a hot-dip GalFan alloy anti-corrosion coating.
Further preferably, in step S3, the step of the post-plating treatment of hot dip plating includes: finishing, cooling, passivating, rinsing, drying and inspecting.
More preferably, in step S2, the thickness of the hot-dip anti-corrosion coating is 30 to 200 μm.
Further preferably, in step S4, the fouling-resistant composite coating is prepared by low-pressure air spraying.
Further preferably, the overhead line system steel cantilever positioning device comprises a forward positioning steel cantilever positioning device and a backward positioning steel cantilever positioning device.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. according to the fouling-resistant anti-corrosion steel cantilever positioning device and the processing method of the contact net, on the premise that the surface conductivity of the contact net component is not influenced, the coating with the fouling-resistant function is prepared on the hot-dip galvanizing or GalFan alloy anti-corrosion coating, deposition of corrosive pollutants in a tunnel on the surface of the contact net component is reduced, the overall anti-corrosion performance of the steel cantilever positioning device is improved, and the service life of the steel cantilever positioning device is prolonged.
2. The dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact network is prepared by taking organic silicon modified bisphenol A epoxy resin as a main film forming resin, using a large amount of condensation crosslinkable organic silicon monomers and crosslinking agents in a matching manner, and using a catalyst, an interface bonding agent, a corrosion inhibition passivating agent, a conductive filler, a corrosion inhibition passivating agent and an oriented arrangement agent, so that the dirt-repellent coating with excellent corrosion resistance and conductivity is obtained. After the dirt-repellent coating is formed into a film, the film is compact, high in hardness and low in surface energy, has excellent salt mist corrosion resistance, wet and heat corrosion resistance, electric conduction and dirt-repellent performance, and can meet the dirt-repellent, anti-corrosion and electric conduction requirements in a tunnel of a high-speed rail contact net assembly.
3. According to the dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact network, the organic silicon modified bisphenol A epoxy resin is selected as the main film forming resin, so that the initial film forming property can be improved, the coating can be rapidly formed into a film, and the modified bisphenol A epoxy resin enables the coating and a base material to have good bonding strength; the organosilicon monomer and the cross-linking agent in the coating can be condensed with organosilicon modified bisphenol A epoxy resin under the action of a catalyst and moisture in the air to form a high-density and high-hardness organosilicon coating film, the use of a large amount of organosilicon monomers and cross-linking agents can effectively reduce the surface energy of the coating film and improve the hardness and compactness of the coating film, corrosive pollutants are not easy to adhere to the surface of the coating film due to the lower surface energy, the capillary adsorption effect of the coating film is avoided due to the high-density and high-hardness surface, the adsorption force of the pollutants on the surface of the coating film is reduced, and the deposited pollutants can be removed from the surface of the coating film under the action of airflow flowing. In addition, the use of a large amount of organic silicon monomers can effectively reduce the viscosity of the coating, increase the solid content of the coating and reduce the use amount of a solvent, and the lower viscosity can be beneficial to the penetration of the coating into pores of hot-dip zinc and thermal-sprayed coatings, so that the coating has an excellent hole sealing effect, thereby improving the overall corrosion resistance of a coating system, and simultaneously, the lower use amount of the solvent can reduce the environmental pollution.
4. The dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact net takes the flake aluminum powder as the conductive filler, and the flake aluminum powder can form a continuous and flat layered distribution structure under the action of the directional distribution agent, so that the coating has the conductive property and the excellent shielding property, effectively blocks the permeation of corrosive media, and improves the anticorrosive property of the coating; the flaky aluminum filler has lower potential difference with the bottom layer hot dip galvanizing and the hot spray zinc-aluminum coating, and has no galvanic corrosion problem compared with high-potential conductive fillers such as copper, silver, graphene and the like; the lamellar structure formed by the flaky aluminum filler does not influence the roughness of the surface of a coating film, so that the dirt-repelling and easy-to-clean performance of the coating is not influenced; the use of the corrosion inhibition passivator in the coating can simultaneously enable the flaky aluminum filler and the thermal spraying zinc-aluminum coating at the bottom layer to form a passivation film, thereby further improving the corrosion resistance of the coating system; the use of the interface adhesive aminopropyltriethoxysilane in the coating can effectively increase the adhesive property of the filler and the resin and improve the overall strength of the coating.
5. The fouling resistant composite coating of the fouling resistant anticorrosive type steel wrist arm positioning device of the contact network improves the dispersion stability of the flaky aluminum conductive filler and the pigment and changes the suspension performance of the filler by utilizing the thixotropy of the organic bentonite.
6. According to the dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact net, the mixed solution of ethanol and propylene glycol methyl ether is used as a solvent, the ethanol solvent and the propylene glycol methyl ether have good compatibility, the ethanol solvent has good solubility on organic silicon resin, the propylene glycol methyl ether has good solubility on bisphenol A epoxy resin, and the use of the mixed solvent can keep good uniformity of a coating and improve the comprehensive performance of the coating.
Drawings
FIG. 1 is a schematic view of a fouling-resistant corrosion-resistant steel cantilever positioning device of a contact network according to an embodiment of the invention;
fig. 2 is a schematic principle view of the dirt-repellent and corrosion-resistant steel cantilever positioning device of the contact net of the embodiment of the invention, wherein the components are coated with the dirt-repellent composite coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, the present invention provides a stain-resistant and corrosion-resistant steel cantilever positioning device for a contact system, which includes a forward positioning steel cantilever positioning device and a reverse positioning steel cantilever positioning device, and is described by taking the contact system steel cantilever positioning device illustrated in fig. 1 as an example, the contact system steel cantilever positioning device includes a flat cantilever 101, an inclined cantilever 102, a positioning tube 104 and a positioner 107, one end of the flat cantilever is connected to an upper cantilever base, the other end of the flat cantilever is provided with a messenger cable seat 103, one end of the inclined cantilever 102 is connected to a lower cantilever base, the other end of the inclined cantilever is connected to the flat cantilever 101, the positioning tube 104 is connected to the inclined cantilever 102 through a positioning ring 105, and the positioner 107 is fixed on a positioner support 106 and integrally mounted on the positioning tube 104. The flat cantilever 101, the inclined cantilever 102, the messenger wire seat 103, the positioning tube 104, the positioning ring 105, the positioner support 106, the positioner 107 and other connecting parts are all made of steel.
The anti-fouling and anti-corrosion type steel cantilever positioning device of the contact network comprises a hot dip anti-corrosion coating 2 coated on the outer surface of part or all of parts 1 of the contact network steel cantilever positioning device, an anti-fouling composite coating 3 coated on the outer surface of the hot dip anti-corrosion coating 2, and the anti-fouling composite coating 3 is an anti-corrosion conductive anti-fouling coating.
Further preferably, the anti-corrosion conductive fouling-resistant coating comprises the following components in parts by mass:
10-20 parts of film forming resin, 55-65 parts of organic silicon monomer, 0.5-2.5 parts of cross-linking agent, 5-10 parts of interface adhesive, 0.1-0.3 part of catalyst, 30-60 parts of conductive filler, 1-3 parts of corrosion inhibition passivator, 0.2-0.4 part of directional distribution agent, 3-6 parts of anti-settling agent, 10-20 parts of solvent, 0.3-0.8 part of defoaming agent and 5-20 parts of pigment and filler;
wherein the film-forming resin is organic silicon modified bisphenol A epoxy resin.
Further preferably, the organosilicon monomer is selected from one or any combination of methyltriethoxysilane, methyltrichlorosilane, propyltrichlorosilane and dimethyldichlorosilane.
Further preferably, the cross-linking agent is one or a combination of ethyl orthosilicate and methyl orthosilicate.
Further preferably, the interface adhesive is aminopropyltriethoxysilane.
Further preferably, the catalyst is one or any combination of dibutyltin dilaurate, an organic zinc catalyst and an organic bismuth catalyst.
Further preferably, the conductive filler is aluminum flake with a flake diameter of about 1 μm.
Further preferably, the corrosion inhibition passivating agent is one or any combination of sodium molybdate, cerium nitrate and borate.
Further preferably, the orientation arrangement agent is polyvinylpyrrolidone.
Further preferably, the anti-settling agent is organic bentonite.
Further preferably, the defoaming agent is polydimethylsiloxane-type or polyether-type or higher alcohol-type defoaming agent.
Further preferably, the pigment filler is an anti-rust pigment.
As shown in fig. 2, the processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact network comprises the following steps:
s1, firstly, selecting common carbon steel, weathering steel or high weathering steel as a base material of the steel cantilever positioning device, and processing each part 1 of the steel cantilever positioning device into required size and shape according to the requirements of a design drawing, wherein the processing of each part of the steel cantilever positioning device mainly adopts a mode of matching welding and machining; and then carrying out hot dip plating pretreatment on the surface of the part 1 of the contact net steel cantilever positioning device.
The hot dip coating pre-plating treatment step comprises the following steps: degreasing, washing, pickling, washing, dipping in a plating assistant solvent, and drying and preheating.
And S2, performing hot dip coating on the surface of the part after the pre-plating treatment to prepare the hot dip coating anti-corrosion coating 2.
The hot dip coating anti-corrosion coating 2 is a hot dip galvanizing anti-corrosion coating or a hot dip GalFan alloy anti-corrosion coating, and the thickness of the coating is controllable and is 30-200 mu m, and more preferably is more than or equal to 30 mu m and less than 100 mu m.
And S3, performing post-plating treatment of hot dip plating.
The step of the post-plating treatment of hot dip plating includes: finishing, cooling, passivating, rinsing, drying and inspecting.
S4, preparing the dirt-repellent composite coating 3 on the surface of the hot-dip anti-corrosion coating, wherein the thickness of the dirt-repellent composite coating is 60-100 mu m.
And S5, completing the assembly of the contact net steel cantilever positioning device.
The fouling resistant composite coating is prepared by low pressure air spraying.
The components and preparation of the fouling resistant composite coating (corrosion resistant conductive fouling resistant coating) of the present invention are further illustrated by the following examples.
Example 1
The anti-corrosion conductive fouling-resistant coating for the assembly is prepared by weighing 10 parts of film-forming resin (organic silicon modified bisphenol A epoxy resin SM-60), 55 parts of organic silicon monomer (methyl triethoxysilane), 0.5 part of cross-linking agent (ethyl orthosilicate), 5 parts of interface adhesive (aminopropyl triethoxysilane), 0.1 part of catalyst (dibutyltin dilaurate), 30 parts of conductive filler (1 mu m flake aluminum powder), 1 part of corrosion inhibition passivator (sodium molybdate), 0.2 part of oriented arrangement agent (polyvinylpyrrolidone), 3-6 parts of anti-settling agent (organic bentonite), 10 parts of solvent (ethanol 6 parts and propylene glycol monomethyl ether 4 parts), 0.3 part of defoaming agent (Defom contact net 8700) and 5 parts of pigment and filler (iron oxide red) according to the mass percentage, uniformly mixing and stirring, and grinding in a sand mill to the fineness of about 25 mu m.
Example 2
Weighing 20 parts of film-forming resin (organic silicon modified bisphenol A epoxy resin SM-60), 65 parts of organic silicon monomer (methyl triethoxysilane 40 parts and methyl trichlorosilane 25 parts), 2.5 parts of cross-linking agent (methyl orthosilicate), 10 parts of interface adhesive (aminopropyl triethoxysilane), 0.3 part of catalyst (organic bismuth catalyst), 60 parts of conductive filler (1 mu m sheet aluminum powder), 3 parts of corrosion inhibition passivator (cerium nitrate), 0.4 part of oriented arrangement agent (polyvinylpyrrolidone), 6 parts of anti-settling agent (organic bentonite), 12 parts of solvent (ethanol and 8 parts of propylene glycol monomethyl ether), 0.8 part of defoaming agent (Defom 8700) and 20 parts of pigment filler (iron oxide red), uniformly mixing and stirring, grinding the mixture in a sand mill to the fineness of about 25 mu m to obtain the anti-corrosion conductive dirt-repellent coating for the contact net component.
Example 3
Weighing 15 parts of film-forming resin (organic silicon modified bisphenol A epoxy resin SM-60), 55 parts of organic silicon monomer (methyl triethoxysilane 40 parts and dimethyl dichlorosilane 15 parts), 1.5 parts of cross-linking agent (ethyl orthosilicate), 8 parts of interface bonding agent (aminopropyl triethoxysilane), 0.2 part of catalyst (dibutyltin dilaurate), 50 parts of conductive filler (1 mu m sheet aluminum powder), 2 parts of corrosion inhibition passivator (cerium nitrate), 0.3 part of oriented arrangement agent (polyvinylpyrrolidone), 4 parts of anti-settling agent (organic bentonite), 15 parts of solvent (ethanol 8 parts and propylene glycol monomethyl ether) 15 parts, 0.6 part of defoaming agent (Defom 8700) and 15 parts of pigment filler (iron oxide red) according to the mass percentage, uniformly mixing and stirring, grinding the mixture in a sand mill to the fineness of about 25 mu m to obtain the anti-corrosion conductive dirt-repellent coating for the contact net component.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
according to the fouling-resistant anti-corrosion steel cantilever positioning device and the processing method of the contact net, on the premise that the surface conductivity of the contact net component is not influenced, the coating with the fouling-resistant function is prepared on the hot-dip galvanizing or GalFan alloy anti-corrosion coating, deposition of corrosive pollutants in a tunnel on the surface of the contact net component is reduced, the overall anti-corrosion performance of the steel cantilever positioning device is improved, and the service life of the steel cantilever positioning device is prolonged.
The dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact network is prepared by taking organic silicon modified bisphenol A epoxy resin as a main film forming resin, using a large amount of condensation crosslinkable organic silicon monomers and crosslinking agents in a matching manner, and using a catalyst, an interface bonding agent, a corrosion inhibition passivating agent, a conductive filler, a corrosion inhibition passivating agent and an oriented arrangement agent, so that the dirt-repellent coating with excellent corrosion resistance and conductivity is obtained. After the dirt-repellent coating is formed into a film, the film is compact, high in hardness and low in surface energy, has excellent salt mist corrosion resistance, wet and heat corrosion resistance, electric conduction and dirt-repellent performance, and can meet the dirt-repellent, anti-corrosion and electric conduction requirements in a tunnel of a high-speed rail contact net assembly.
According to the dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact network, the organic silicon modified bisphenol A epoxy resin is selected as the main film forming resin, so that the initial film forming property can be improved, the coating can be rapidly formed into a film, and the modified bisphenol A epoxy resin enables the coating and a base material to have good bonding strength; the organosilicon monomer and the cross-linking agent in the coating can be condensed with organosilicon modified bisphenol A epoxy resin under the action of a catalyst and moisture in the air to form a high-density and high-hardness organosilicon coating film, the use of a large amount of organosilicon monomers and cross-linking agents can effectively reduce the surface energy of the coating film and improve the hardness and compactness of the coating film, corrosive pollutants are not easy to adhere to the surface of the coating film due to the lower surface energy, the capillary adsorption effect of the coating film is avoided due to the high-density and high-hardness surface, the adsorption force of the pollutants on the surface of the coating film is reduced, and the deposited pollutants can be removed from the surface of the coating film under the action of airflow flowing. In addition, the use of a large amount of organic silicon monomers can effectively reduce the viscosity of the coating, increase the solid content of the coating and reduce the use amount of a solvent, and the lower viscosity can be beneficial to the penetration of the coating into pores of hot-dip zinc and thermal-sprayed coatings, so that the coating has an excellent hole sealing effect, thereby improving the overall corrosion resistance of a coating system, and simultaneously, the lower use amount of the solvent can reduce the environmental pollution.
The dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact net takes the flake aluminum powder as the conductive filler, and the flake aluminum powder can form a continuous and flat layered distribution structure under the action of the directional distribution agent, so that the coating has the conductive property and the excellent shielding property, effectively blocks the permeation of corrosive media, and improves the anticorrosive property of the coating; the flaky aluminum filler has lower potential difference with the bottom layer hot dip galvanizing and the hot spray zinc-aluminum coating, and has no galvanic corrosion problem compared with high-potential conductive fillers such as copper, silver, graphene and the like; the lamellar structure formed by the flaky aluminum filler does not influence the roughness of the surface of a coating film, so that the dirt-repelling and easy-to-clean performance of the coating is not influenced; the use of the corrosion inhibition passivator in the coating can simultaneously enable the flaky aluminum filler and the thermal spraying zinc-aluminum coating at the bottom layer to form a passivation film, thereby further improving the corrosion resistance of the coating system; the use of the interface adhesive aminopropyltriethoxysilane in the coating can effectively increase the adhesive property of the filler and the resin and improve the overall strength of the coating.
The fouling resistant composite coating of the fouling resistant anticorrosive type steel wrist arm positioning device of the contact network improves the dispersion stability of the flaky aluminum conductive filler and the pigment and changes the suspension performance of the filler by utilizing the thixotropy of the organic bentonite.
According to the dirt-repellent composite coating of the dirt-repellent anticorrosive type steel wrist arm positioning device of the contact net, the mixed solution of ethanol and propylene glycol methyl ether is used as a solvent, the ethanol solvent and the propylene glycol methyl ether have good compatibility, the ethanol solvent has good solubility on organic silicon resin, the propylene glycol methyl ether has good solubility on bisphenol A epoxy resin, and the use of the mixed solvent can keep good uniformity of a coating and improve the comprehensive performance of the coating.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a dirty anticorrosive shaped steel cantilever positioner of phobia of contact net which characterized in that:
the outer surface of part or all of parts (1) of the contact net steel cantilever positioning device is plated with a hot dip anti-corrosion coating (2), and the outer surface of the hot dip anti-corrosion coating (2) is coated with anti-corrosion conductive dirt-repellent paint;
the anti-corrosion conductive dirt-repellent coating comprises the following components in parts by mass:
10-20 parts of organic silicon modified bisphenol A epoxy resin, 55-65 parts of organic silicon monomer, 0.5-2.5 parts of cross-linking agent, 5-10 parts of interface adhesive, 0.1-0.3 part of catalyst and 10-20 parts of solvent;
30-60 parts of conductive filler, 0.2-0.4 part of directional distribution agent and 1-3 parts of corrosion inhibition passivator;
3-6 parts of an anti-settling agent, 5-20 parts of pigment and filler and 0.3-0.8 part of a defoaming agent; wherein,
the organic silicon monomer is one or any combination of methyltriethoxysilane, methyltrichlorosilane, propyltrichlorosilane and dimethyldichlorosilane;
the cross-linking agent is one or a combination of tetraethoxysilane and methyl orthosilicate;
the conductive filler is sheet aluminum powder.
2. A processing method of a fouling-resistant and corrosion-resistant steel cantilever positioning device of a contact network is characterized by comprising the following steps:
s1, performing pre-plating treatment of hot dip plating on the surfaces of the parts of the contact net steel cantilever positioning device;
s2, performing hot dip coating on the surface of the part after the pre-plating treatment is finished to prepare a hot dip coating anti-corrosion coating;
s3, performing post-plating treatment of hot dip plating;
s4, preparing a dirt-repellent composite coating formed by the anti-corrosion conductive dirt-repellent paint according to claim 1 on the surface of the hot dip anti-corrosion coating;
and S5, completing the assembly of the contact net steel cantilever positioning device.
3. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 2, characterized in that:
in step S1, the step of the pre-plating treatment of hot dip plating includes: degreasing, washing, pickling, washing, dipping in a plating assistant solvent, and drying and preheating.
4. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 3, characterized in that:
in step S2, the hot-dip anti-corrosion coating is a hot-dip galvanized anti-corrosion coating.
5. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 3, characterized in that:
in step S2, the hot-dip anti-corrosion coating is a hot-dip GalFan alloy anti-corrosion coating.
6. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 3, characterized in that:
in step S3, the step of post-plating treatment of hot dip plating includes: finishing, cooling, passivating, rinsing, drying and inspecting.
7. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 4 or 5, characterized in that:
in step S2, the thickness of the hot dip anti-corrosion coating is 30-200 μm.
8. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 3, characterized in that:
in step S4, the fouling resistant composite coating is prepared using low pressure air spraying.
9. The processing method of the anti-fouling and anti-corrosion type steel wrist arm positioning device of the contact net according to claim 2, characterized in that:
the contact net steel cantilever positioning device comprises a forward positioning steel cantilever positioning device and a backward positioning steel cantilever positioning device.
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