CN113072876B - Contact net steel cantilever positioning device coated with dirt-repellent composite coating and processing method - Google Patents
Contact net steel cantilever positioning device coated with dirt-repellent composite coating and processing method Download PDFInfo
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- C09D183/04—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
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Abstract
The invention discloses a contact net steel cantilever positioning device coated with a dirt-repellent composite coating and a processing method, and the contact net steel cantilever positioning device is characterized in that: the outer surface of the bottom layer anti-corrosion coating of part or all parts is coated with a dirt-repellent composite coating which is anti-corrosion conductive dirt-repellent paint. The contact net steel cantilever positioning device provided by the invention is low in production and manufacturing cost, the long-acting anti-corrosion coating and the dirt-repellent composite coating have good anti-corrosion effect under the mutual synergistic effect, the adhesion of corrosive dirt such as dust can be effectively avoided or reduced, and the service life and the operation safety and reliability of the novel steel cantilever positioning device are greatly improved.
Description
Technical Field
The invention belongs to the field of electrified railway contact net steel wrists, and particularly relates to a contact net steel cantilever positioning device coated with a dirt-repellent composite coating and a processing method.
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 a contact net steel cantilever positioning device coated with a dirt-repellent composite coating and a processing method thereof to be applied to surface protection of a contact net steel component under the offshore and dust harsh environment condition is imperative.
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, a long-acting anti-corrosion coating is prepared on the surface of a steel cantilever positioning device, so that the purpose that the online service life of a touch net steel cantilever in the offshore environment is not less than 20 years is achieved, but in a dust environment, the surface of the steel cantilever positioning device is seriously precipitated by dust, the operation and maintenance are difficult, and meanwhile, the corrosion of the long-acting anti-corrosion coating is accelerated, so that the key problems to be solved by the invention are that a dirt-repellent coating is added on the outer surface of a combined coating, the adhesion of corrosive dirt such as dust is avoided or reduced, and the self-cleaning capability of the surface is improved.
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 catenary steel cantilever positioning device coated with a soil-phobic composite coating, wherein:
the outer surface of part or all parts of the contact net steel wrist arm positioning device is coated with a dirt-repellent composite coating, and the dirt-repellent composite coating is an anti-corrosion conductive dirt-repellent 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.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for manufacturing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating, comprising the steps of:
s1, surface pretreatment is carried out on parts of the contact net steel cantilever positioning device;
s2, preparing a bottom anti-corrosion coating on the surface of the part within a preset time after the surface pretreatment is finished;
s3, preparing the dirt-repellent composite coating on the surface of the bottom layer anticorrosion coating;
and S4, completing the assembly of the contact net steel cantilever positioning device.
Further preferably, in step S1, the surface pretreatment includes oil removal, dirt removal, rust removal, and surface roughening.
Further preferably, in step S1, the method for removing oil and dirt of the component part is: removing the organic solvent on the surface by scrubbing.
Further preferably, in step S1, the method for removing rust and roughening surface of the component part is: and (3) carrying out sand blasting on the surface of the part subjected to oil removal and dirt removal, and obtaining a clean and roughened surface after sand blasting.
Further preferably, in step S2, the bottom anti-corrosion coating is a high zinc aluminum coating.
Further preferably, in step S2, the high-zinc aluminum coating is prepared by thermal spraying.
Further preferably, in step S3, 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. the contact net steel wrist arm positioning device coated with the dirt-repellent composite coating and the processing method have the advantages that the production and manufacturing cost is low, the long-acting anticorrosion coating and the dirt-repellent composite coating have good anticorrosion effect under the mutual synergistic action, the adhesion of corrosive dirt such as dust can be effectively avoided or reduced, and the service life and the operation safety and reliability of the novel steel wrist arm positioning device are greatly improved.
2. The dirt-repellent composite coating of the contact net steel wrist arm positioning device takes organic silicon modified bisphenol A epoxy resin as main film forming resin, and a large amount of organic silicon monomers and cross-linking agents capable of being condensed and cross-linked, catalysts, interface adhesives, corrosion inhibition passivators, conductive fillers, corrosion inhibition passivators and directional arrangement agents are matched to obtain the dirt-repellent coating with excellent corrosion resistance and conductivity. 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 contact net steel cantilever positioning device, 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 the 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 contact net steel cantilever positioning device 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 arrangement agent, so that the coating has the conductive performance and the excellent shielding performance, effectively prevents corrosive media from permeating, and improves the corrosion resistance 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 dirt-repellent composite coating of the contact net steel cantilever positioning device improves the dispersion stability of the flaky aluminum conductive filler and the pigment and changes the suspension property of the filler by utilizing the thixotropy of the organic bentonite.
6. According to the dirt-repellent composite coating of the contact net steel cantilever positioning device, the mixed solution of ethanol and propylene glycol methyl ether is selected 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 the coating and improve the comprehensive performance of the coating.
Drawings
Fig. 1 is a schematic view of a catenary steel cantilever positioning device according to an embodiment of the invention;
fig. 2 is a schematic view of the principle that parts of the overhead line system steel cantilever positioning device of the embodiment of the invention 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 catenary steel cantilever positioning device coated with a fouling-resistant composite coating, where the catenary steel cantilever positioning device includes a positive positioning steel cantilever positioning device and a negative positioning steel cantilever positioning device, and is described by way of example in fig. 1, the catenary steel cantilever positioning device includes a flat cantilever 101, an oblique cantilever 102, a positioning tube 104, and a positioner 107, where 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 oblique cantilever 102 is connected to a lower cantilever base, the other end of the oblique cantilever is connected to the flat cantilever 101, the positioning tube 104 is connected to the oblique 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 outer surface of part or all parts of the contact net steel wrist arm positioning device is coated with a dirt-repellent composite coating, and the dirt-repellent composite coating is an anti-corrosion conductive dirt-repellent 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 positioning device for the steel cantilever of the contact net coated with the dirt-repellent composite coating comprises the following steps:
s1, firstly, selecting common carbon steel, weathering steel or high weathering steel as the substrate material of the steel cantilever positioning device, processing each part of the steel cantilever positioning device into required size and shape according to the requirement of a design drawing, and then preprocessing the surface of the part 1 of the contact net steel cantilever positioning device.
The surface pretreatment comprises oil removal, dirt removal, rust removal and surface roughening. Cleaning greasy dirt on the surface of a workpiece by using an organic volatile solvent such as alcohol; and (3) carrying out sand blasting on the surface of the cleaned steel part, wherein the sand material is brown corundum with 12-30 meshes, and the surface is cleaned and coarsened after sand blasting, and the surface roughness Rz is 40-60 mu m.
S2, preparing the high zinc-aluminum coating 2 on the surface of the substrate by adopting an electric arc spraying mode within 2 hours after the surface pretreatment is finished, wherein the aluminum content is 10-98%, and the coating thickness is controllable and is 300 mu m at 100-.
S3, after spraying, preparing the dirt-repellent composite coating 3 on the surface by using a low-pressure air spraying mode, wherein the thickness of the coating is 60-100 mu m.
And S4, finally, assembling all parts into the novel steel cantilever positioning device according to the requirements of the design drawing.
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:
the contact net steel wrist arm positioning device coated with the dirt-repellent composite coating and the processing method have the advantages that the production and manufacturing cost is low, the long-acting anticorrosion coating and the dirt-repellent composite coating have good anticorrosion effect under the mutual synergistic action, the adhesion of corrosive dirt such as dust can be effectively avoided or reduced, and the service life and the operation safety and reliability of the novel steel wrist arm positioning device are greatly improved.
The dirt-repellent composite coating of the contact net steel wrist arm positioning device takes organic silicon modified bisphenol A epoxy resin as main film forming resin, and a large amount of organic silicon monomers and cross-linking agents capable of being condensed and cross-linked, catalysts, interface adhesives, corrosion inhibition passivators, conductive fillers, corrosion inhibition passivators and directional arrangement agents are matched to obtain the dirt-repellent coating with excellent corrosion resistance and conductivity. 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 contact net steel cantilever positioning device, 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 the 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 contact net steel cantilever positioning device 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 arrangement agent, so that the coating has the conductive performance and the excellent shielding performance, effectively prevents corrosive media from permeating, and improves the corrosion resistance 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 dirt-repellent composite coating of the contact net steel cantilever positioning device improves the dispersion stability of the flaky aluminum conductive filler and the pigment and changes the suspension property of the filler by utilizing the thixotropy of the organic bentonite.
According to the dirt-repellent composite coating of the contact net steel cantilever positioning device, the mixed solution of ethanol and propylene glycol methyl ether is selected 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 the 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 contact net steel cantilever positioner who scribbles and has had a dirty composite coating which characterized in that:
preparing a bottom anti-corrosion coating on the surface of a part of the contact net steel cantilever positioning device, and coating a dirt-repellent composite coating on the outer surface of the bottom anti-corrosion coating of part or all of the part of the contact net steel cantilever positioning device, wherein the dirt-repellent composite coating is an anti-corrosion conductive dirt-repellent coating;
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;
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 catenary steel cantilever positioning device coated with a dirt-repellent composite coating is characterized by comprising the following steps:
s1, surface pretreatment is carried out on parts of the contact net steel cantilever positioning device;
s2, preparing a bottom anti-corrosion coating on the surface of the part within a preset time after the surface pretreatment is finished;
s3, preparing a dirt-repellent composite coating layer as claimed in claim 1 on the surface of the bottom layer anticorrosion coating layer;
and S4, completing the assembly of the contact net steel cantilever positioning device.
3. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 2, wherein the method comprises the following steps:
in step S1, the surface pretreatment includes oil removal, dirt removal, rust removal, and surface roughening.
4. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 3, wherein the method comprises the following steps:
in step S1, the method of removing oil and dirt of the component parts is: and the organic solvent is used for removing the components by scrubbing on the surfaces of the components.
5. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 3, wherein the method comprises the following steps:
in step S1, the method for removing rust and roughening the surface of the component part includes: and (3) carrying out sand blasting on the surface of the part subjected to oil removal and dirt removal, and obtaining a clean and roughened surface after sand blasting.
6. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 2, wherein the method comprises the following steps:
in step S2, the bottom anti-corrosion coating is a high zinc aluminum coating.
7. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 6, wherein the method comprises the following steps:
in step S2, the high zinc-aluminum coating is prepared by thermal spraying.
8. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 2, wherein the method comprises the following steps:
in step S3, the fouling resistant composite coating is prepared using low pressure air spraying.
9. The method of processing a catenary steel cantilever positioning device coated with a fouling-resistant composite coating of claim 2, wherein the method comprises the following steps:
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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| US7288607B2 (en) * | 2004-10-12 | 2007-10-30 | E. I. Du Pont De Nemours & Co. | High solids primer composition based on epoxy ring opening curing reaction |
| KR100995552B1 (en) * | 2009-01-22 | 2010-11-19 | 주식회사 케이씨씨 | Anticorrosive coating composition comprisng silsesquioxane suitable as bottom coating for silicone anti-fouling paint system |
| CN102382547B (en) * | 2011-07-08 | 2013-07-31 | 中国石油天然气集团公司 | Siloxane epoxy low-surface energy antifouling coating and preparation method thereof |
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| CN108407670A (en) * | 2018-03-30 | 2018-08-17 | 中铁第四勘察设计院集团有限公司 | A kind of anti-corrosion shaped steel cantilever positioning device for contact net |
| CN108659668A (en) * | 2018-04-17 | 2018-10-16 | 国网浙江省电力有限公司电力科学研究院 | Antifouling antistatic anti-corrosion nano composite epoxy coating and preparation method thereof |
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