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54results about How to "Extend protection life" patented technology

Method for preventing corrosion and marine creature fouling on ship propeller

The invention relates to a method for preventing corrosion and marine creature fouling on a ship propeller. Cathode protection, a ceramic insulating coating and a metallic antifouling coating are organically combined in the method. The method comprises the following steps of: removing scales on the surface of the copper alloy propeller, obtaining a uniform and rough surface, and spraying a metallic adhesive coating by adopting a thermal spraying method; preparing a metallic oxide ceramic insulating coating on the surface of the adhesive coating by adopting the thermal spraying method, wherein the ceramic insulating coating comprises single-component oxides such as Al2O3, Cr2O3 and the like and multi-component composite powder of TiO2 or SiO2 with low melting point; preparing the metallic antifouling coating on the ceramic insulating coating, wherein the metallic antifouling coating is made of pure copper or copper alloy with antifouling function; and meanwhile, performing cathode protection on the propeller. The ceramic and the metallic coating adopted in the method have higher bonding force and longer protection life, the current requirement of the ship cathode protection is reduced, the corrosion and marine creature fouling problems of the ship propeller can be simultaneously solved, and the ceramic and the metallic coating have obvious corrosion resistance and antifouling effect.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Article with intermediate layer and protective layer, and its fabrication

A protected article includes a nickel-base superalloy substrate, an interlayer overlying the substrate, and a protective layer overlying the interlayer. The protective layer has a composition comprising at least one of rhodium, platinum, palladium, and ruthenium. In one composition, palladium is present in an amount of from about 1 to about 41 atomic percent; platinum is present in an amount of about (40+atomic percent palladium) atomic percent for palladium ranging from about 1 atomic percent to about 14 atomic percent and up to about 54 atomic percent for palladium ranging from about 15 atomic percent up to about 41 atomic percent; rhodium is present in an amount of at least about 24 atomic percent; zirconium, hafnium, titanium, and mixtures thereof are present in an amount of from zero up to about 5 atomic percent; and ruthenium is present in an amount of from zero up to about 5 atomic percent, balance impurities. The interlayer has a coefficient of thermal expansion intermediate between that of the substrate and that of the protective layer. The protected article is fabricated by furnishing the substrate, applying the interlayer over the substrate, and applying the protective layer over the interlayer. The application of the protective layer may be, for example, by welding or attachment of a solid piece.
Owner:GENERAL ELECTRIC CO

Electric field salt rejection protective system protected by reinforced concrete structure in chloride environment

InactiveCN101839024APrevent intrusionLong-lasting protection against corrosionBuilding insulationsRebar corrosionEngineering
The invention discloses an electric field salt rejection protective system protected by a reinforced concrete structure in chloride environment, which is provided with an anode arranged on the surface layer of the concrete structure and an anode cable connected on the anode; the reinforcement in the concrete is used as a cathode and is provided with a cathode cable connected on the reinforcement and simultaneously provided with a direct-current power supply. The invention is characterized in that the output voltage of the direct-current power supply between the anode and the cathode is 0.5-1V; and the current density in the reinforcement is 0.3-0.7mA / m<2>. The new corrosion guard introduced by the invention provides a new electric field salt rejection system aiming at the essence that chloride in external environment invades concrete to cause reinforcement corrosion; aiming at the new reinforced concrete structure in chlorine environment, the adoption of the system can effectively prevent chloridions from penetrating into the environment, thus achieving the purpose of protecting durable non-corrosion on the internal reinforcement. The electric field salt rejection system has simple constitution, good salt rejection effect and long protective service life, and is convenient for implementation and maintenance management.
Owner:NANJING HYDRAULIC RES INST

Titanium and nano fluorine-containing poly (aryl ether ketone) copolymer, coating made thereof and manufacturing method thereof

The invention makes further technical innovation in the prior invention and obtains a titanium and nano fluorine-containing poly (aryl ether ketone) macromolecular alloy copolymer by copolymerizationof a nano organic titanium polymer and a nano alumina-modified fluorine-containing poly (aryl ether ketone) polymer. The novel material has a series of excellent physicochemical characteristics and isextremely suitable to meet the special protection requirements of exploitation equipment of underground deep crude oil and natural gas such as high hardness, corrosion resistance, high temperature resistance, high-pressure hot vapor penetrability resistance, dirt picking up and scale deposition prevention, aging resistance, durability and other properties. A nano organic titanium macromolecular alloy coating manufactured by using the novel chemical material of the invention as a substrate film forming material resin is used in anticorrosion coatings of oil-gas field well exploitation drillingtools and well pipes and has the advantages of prolonging the protection life of a nano ceramic film coating and an organic titanium special anticorrosion coating by several times, greatly reducing oil and natural gas exploitation cost and equipment maintenance cost and obviously improving comparable relative production efficiency compared with the product of the prior invention.
Owner:佛山市顺德区赛富龙化工材料科技有限公司 +1

Paint prefabricated film, protection structure and preparation method of protection structure

The invention provides a paint prefabricated film, a protection structure and a preparation method of the protection structure. The surface, deviated from a back glue layer, of a substrate base material layer is a smooth plane, the smooth plane has the relatively low surface tension, and a paint coating formed on the surface of the smooth plane can be more uniform in thickness and fewer in insidedefects, so that the quality is higher; a plurality of bulge parts are arranged on the surface, facing the back glue layer, of the substrate base material layer, so that the binding force of the substrate base material layer and the paint coating is smaller than that of the substrate base material layer and the back glue layer, separation of the paint coating from a paint prefabricated film base body can be realized by the aid of the external force, and the paint coating is used for protecting the outer surface of a wind turbine blade base body. The paint prefabricated film is applied to preparation of the wind turbine blade protection structure, and the large-area damage to the paint coating due to sand erosion and rain erosion of the area having the low thickness of the paint coating dueto the non-uniform thickness of the paint coating can be avoided, so that the protection effect of the protection structure can be improved.
Owner:SINOMATECH WIND POWER BLADE

Outdoor floor water-based asphalt bottom paint and processing technology thereof

The invention relates to the technical field of asphalt coating production, and in particular, relates to outdoor floor water-based asphalt bottom paint and a processing technology thereof. The outdoor floor water-based asphalt bottom paint is prepared from the following raw materials in parts by weight: modified asphalt, a filler, a film-forming resin emulsion, an emulsifier, a liquid-phase rareearth stabilizer, a film-forming stabilizer, a defoaming agent, an initiator, a UV agent and deionized water. The water-based asphalt bottom paint provided by the invention has good corrosion resistance, low temperature resistance and aging resistance, and can improve the impact strength of outdoor floors. The processing technology comprises the steps: weighing the modified asphalt, adding the modified asphalt into a proportioning device, weighing the film-forming resin emulsion and deionized water, sequentially adding the weighed filler, the weighed liquid-phase rare earth stabilizer, the weighed UV agent, the weighed emulsifier, the weighed film-forming stabilizer, the weighed defoaming agent and the weighed initiator into the proportioning device, stirring, vacuumizing, naturally cooling to room temperature, and finally screening and filling. The process has the advantage that the high-quality asphalt bottom paint can be obtained through quantitative production.
Owner:安徽欣苗新材料科技有限公司

Metal-based self-repairing coating as well as preparation method and application thereof

The invention provides a metal-based self-repairing coating as well as a preparation method and application thereof, and belongs to the field of electrodeposition micro-nano composite coatings and self-repairing. The metal-based self-repairing coating is composed of a metal coating and a nano container doped in the metal coating, the nano container takes a mesoporous material as a carrier, corrosion inhibitor molecules are supported inside the nano container, and a pH response material is modified on the surface of the nano container. The method comprises the following steps that firstly, a corrosion inhibitor is supported in the nano container, then surface hole sealing treatment is performed on the nano container containing the corrosion inhibitor by adopting a solution with the pH response, then the nano container is further modified through a cationic surface modification solution to enable the surface to have the certain positive charge, finally, a metal electrodeposition solutionis prepared, the nano container which contains the corrosion inhibitor and is provided with the pH response is added into the electrodeposition solution, co-deposition is realized under the action ofcurrent, and the metal coating with a self-repairing function is prepared. According to the metal-based self-repairing coating as well as the preparation method and application thereof, the protective life of the metal coating can be effectively prolonged, and a new idea is provided for preparing the novel metal composite coating.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Low-iron-loss automobile engine stator iron core and preparation process thereof

The invention provides a low-iron-loss automobile engine stator iron core and a preparation process thereof. The stator iron core is of a multi-layer structure and comprises a silicon steel sheet body, a loss reduction outer layer and a protective paint layer which are sequentially designed from inside to outside. The silicon steel sheet body is a rare earth boron silicon steel sheet, and the thickness of the silicon steel sheet body is 0.28-0.30 mm. The loss reduction outer layer is made of a composite alloy material, and the thickness of the loss reduction outer layer is 0.02-0.04 mm. The protective paint layer is compound impregnating varnish, and the thickness of the layer ranges from 0.04 mm to 0.08 mm. According to the invention, the silicon steel sheet body material and surface treatment and protection of the stator core are comprehensively improved and proportioned, so that the mechanical property and the corrosion resistance of the stator iron core are effectively improved, excellent low iron loss rate is achieved, the hysteresis loss and the eddy current loss are reduced by 22% and 19.3% respectively, the comprehensive quality of the stator iron core is higher, economic benefits are effectively improved, and meanwhile the service life is obviously prolonged.
Owner:安徽嘀通网络科技有限公司

Method for preparing tungsten carbide coating on surface of roller for lithium battery production

The invention relates to a method for preparing a tungsten carbide coating on the surface of a roller for lithium battery production. The method comprises the following steps of (1) carrying out visual inspection and magnifying glass inspection on the surface of the roller for lithium battery production; (2) after the surface of the roller is subjected to oil removal, impurity removal and purification, conducting rough grinding and texturing treatment on the surface of the roller through a rough polishing machine; (3) carrying out protection treatment on the non-spraying surfaces at the two ends of the roller subjected to rough grinding and texturing by adopting a high-temperature-resistant adhesive tape and a tool; and (4) using liquid-phase propane as a main combustion gas, using compressed air as a combustion-supporting gas, using nitrogen as a carrier gas powder feeding gas, inputting all the gases into a combustion chamber through a porous ceramic sheet, initially igniting by a spark plug for high-pressure combustion, generating high-velocity flames with the flame flow speed being more than 7 times of the sound velocity, spraying tungsten carbide powder on the surface of the roller to be sprayed by adopting a powder flame spraying technology, and rapidly cooling and solidifying to form the tungsten carbide coating; and (5) carrying out fine polishing treatment on the surface of the roller sprayed with the tungsten carbide coating by adopting a fine polishing machine.
Owner:宁德市福能新能源科技有限公司

A kind of ni-co/cu superhydrophobic coating and preparation method thereof

The invention provides a Ni-Co / Cu super-hydrophobic coating and a preparation method thereof, belonging to the field of electrodeposited composite coatings. The coating comprises a metal substrate, a Ni-Co coating coated on the surface of the metal substrate, a copper coating coated on the surface of the Ni-Co coating, and after the copper coating is oxidized into a dendritic structure, a low surface energy substance is modified on the surface. The preparation method is as follows: first prepare a nickel-cobalt coating on the surface of the metal substrate; then carry out surface treatment on the nickel-cobalt coating, then coat a layer of copper coating on the surface, put the composite coating into the prepared oxidizing solution, and soak for a certain period of time. After taking it out, blow it dry with cold air; finally carry out low surface energy modification to obtain Ni‑Co / Cu composite coating. The invention can effectively improve the protective effect of the Ni-Co coating. When the corrosive medium such as water reaches the surface of the coating, due to the existence of the surface hydrophobic layer, it is difficult for the corrosive medium to enter the interior of the coating, thereby improving the anti-corrosion effect of the coating and prolonging the protection of the coating. It provides a new idea for the preparation of new metal composite coatings.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Anti-corrosion treatment process for ship lock inverted-V-shaped door metal structure

The invention provides an anti-corrosion treatment process for a ship lock inverted-V-shaped door metal structure. The anti-corrosion treatment process comprises the following steps that S1, surface pretreatment is conducted on the inverted-V-shaped door metal structure, and attachments, rust and other impurities are removed; S2, coating corrosion prevention is conducted, specifically, a moisture-curing coating is sprayed on the inverted-V-shaped door metal structure, and the spraying thickness is 0.4-1mm; and S3, a direct-current power source and an auxiliary anode are additionally arranged, the auxiliary anode is connected with the positive electrode of the direct-current power source to serve as an anode, the ship lock inverted-V-shaped door metal structure is connected with the negative electrode of the direct-current power source to serve as a cathode, protective current is provided by the direct-current power source, and an impressed current cathodic protection system is formed. Through the operation, anti-corrosion treatment of the ship lock inverted-V-shaped door metal structure is completed. According to the anti-corrosion treatment process, the comprehensive anti-corrosion technology combining the coating and impressed current cathodic protection is adopted, effective corrosion prevention of the large ship lock inverted-V-shaped door metal structure can be achieved, and the service life of the inverted-V-shaped door metal structure is prolonged.
Owner:THREE GORNAVIGATION AUTHORITY
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