2649 results about "Corrosion prevention" patented technology

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

The invention provides a preparation method of an h-BN / PI high-temperature-resistant anticorrosive coating, and relates to the technical field of polymer composites.The preparation method of the h-BN / PI high-temperature-resistant anticorrosive coating comprises the steps that under the protection of inert atmosphere, aromatic diamine containing impurity element five-membered rings and aromatic dianhydride containing ether bonds are taken and subjected to a polymerization reaction in a polar aprotic solvent, and the h-BN / PI high-temperature-resistant anticorrosive coating is obtained. A polyamide acid solution is obtained; performing ultrasonic-assisted liquid phase stripping on the micron-sized hexagonal boron nitride to obtain single-layer hexagonal boron nitride; adding the single-layer hexagonal boron nitride into the polyamide acid solution for multiple times, and uniformly stirring to obtain a hexagonal boron nitride / polyimide composite solution; and coating the hexagonal boron nitride / polyimide composite liquid on a to-be-coated surface, and carrying out gradient heating curing to obtain the h-BN / PI high-temperature-resistant anticorrosive coating. The h-BN / PI high-temperature-resistant anticorrosive coating based on interaction of multiple hydrogen bonds has relatively good high temperature resistance, relatively good resistance mechanical property and excellent corrosion resistance.

The invention relates to the technical field of cables, and discloses an anti-torsional fatigue and corrosion-resistant wind power cable and a manufacturing process thereof, the anti-torsional fatigue and corrosion-resistant wind power cable comprises a three-phase cable core main body, a dynamic compensation anti-torsion layer, a multifunctional corrosion-resistant barrier layer and an outer sheath, the three-phase cable core main body comprises a stranded conductor, a filling inner layer and an insulating layer; the dynamic compensation anti-torsion layer comprises an incongruous spiral supporting layer and a shape memory alloy compensation layer, and the incongruous spiral supporting layer comprises aramid fiber bundles and a nickel-cobalt alloy wire woven mesh; the multifunctional anti-corrosion barrier layer is arranged on the outer side of the dynamic compensation anti-torsion layer and sequentially comprises an anti-corrosion barrier bottom layer, an anti-corrosion barrier middle layer and an anti-corrosion barrier bottom layer surface layer from inside to outside. Through the gradient composite structure design, the problem of failure of a traditional wind power cable under long-term dynamic load and severe environment is effectively solved, and the torsional fatigue resistance, the corrosion resistance and the environmental adaptability are remarkably improved.

The invention discloses a polyetherketoneketone high-temperature-resistant wear-resistant non-stick coating and a preparation method thereof. The coating is prepared from the following components in parts by mass: 13 to 30 parts of a resin matrix group (containing 12 to 25 parts of titanium modified polyether ketone ketone resin, 1 to 5 parts of fluorine-free viscous resin and 0.65 to 6 parts of aluminum oxide), 0.5 to 3 parts of a nano reinforced group (containing 0.5 to 3 parts of KH-550 modified nano titanium dioxide, 0.025 to 0.6 part of cerium dioxide and 0.5 to 3 parts of boron nitride) and 62 to 71 parts of an auxiliary agent group. The preparation method comprises the following steps: 1) taking diphenyl ether, paraphthaloyl chloride and isophthaloyl chloride as monomers, and synthesizing titanium modified polyether ketone ketone resins with different viscosities through segmented polymerization (1.5-2.0 hours or 3.0-4.0 hours); 2) respectively preparing a smooth bottom layer water dispersion slurry and a wrinkled surface layer water dispersion slurry; and (3) forming a compact bottom layer and a micro-wrinkle surface layer on the base material by adopting a layered spraying and stepped sintering process (280-320 DEG C, 10-20 minutes). The whole system of the coating is fluorine-free and has temperature resistance gt; the coating has the characteristics of high temperature resistance (350DEG C), wear resistance (Taber wear rate of 3-5mg / 1000r), non-sticking (contact angle gt, 100 DEG C) and heavy corrosion resistance, and is suitable for cooking utensils and chemical equipment.

The invention discloses a new energy cable for power transmission, and relates to the technical field of cables, the new energy cable for power transmission comprises an anti-corrosion sleeve, a neck bush is installed in the anti-corrosion sleeve, a conductor is arranged in the neck bush, a sealing and butt joint mechanism is arranged on the outer side of the anti-corrosion sleeve, and the sealing and butt joint mechanism comprises a reinforcing ring sleeve. The device is scientific and reasonable in structure and safe and convenient to use, a sealing and butt joint mechanism is arranged, a positioning buckle is driven to move to the outer side of the reinforcing ring sleeve through traction of a traction baffle ring, and through cooperation of a positioning shaft seat, an anti-deviation supporting rod and an opening and closing sliding block, the anti-deviation supporting rod is fixed to the outer side of the anti-deviation supporting rod, and the anti-deviation supporting rod is fixed to the outer side of the anti-deviation supporting rod. The two positioning buckles are attached together in a sliding mode to form an annular buckle, the annular buckle is connected into the reinforcing ring sleeve in a sleeved mode, the splicing inserting rod is embedded into the positioning groove, and then the sealing buckle is pulled to move through cooperation of the limiting rotating cylinder, the telescopic sleeve rod and the positioning shaft base.

The invention belongs to the field of corrosion and protection, and discloses a preparation method of an intelligent coating with multistage self-repairing capability. According to the method, a core-shell structure nano container with a metal organic framework (MOF) compound as a core and layered double hydroxide (LDH) as a shell is prepared, different functional objects are respectively loaded in the core and the shell by adopting a step-by-step in-situ loading method, and graded release of the functional objects is realized by utilizing pH responsiveness of the MOF and corrosive ion responsiveness of the LDH; the nano container is added into an organic coating as a filler to construct an intelligent coating with multi-stage self-repairing capability. The problems of passive protection and uncontrollable corrosion inhibitor release of a traditional anti-corrosion coating are solved, the coating can repair corrosion defects in time according to needs, the long-acting corrosion resistance is remarkably improved, the preparation process is simple, the condition is mild, and the coating is suitable for metal protection of high-end equipment and other complex service environments.

The invention discloses an inspection equipment motion control method and system for a dynamic disturbance environment, and relates to the technical field of anticorrosion detection, main cable swing and inspection equipment attitude data are collected to establish a dynamic corresponding relation, and according to the relation, the gravity center is regulated in a segmented manner, and the attachment direction is adjusted in real time to form inertia compensation; dynamic rhythm control is implemented in combination with an inertia compensation result to establish a time dislocation relationship; the sensing detection rhythm is synchronously regulated and controlled, and acquisition windows are unified; and dynamically rearranging a sampling sequence according to a detection time sequence, and fusing an attitude balance state and a time dislocation result to form a closed detection path. According to the invention, by dynamically sensing the swinging of the main cable and carrying out gravity center regulation and inertia compensation, the attitude stability and the advancing reliability of the inspection equipment under strong gust are improved; meanwhile, the detection rhythm and path planning are unified, a continuous closed detection path is formed, and the space-time consistency and long-term stability of anti-corrosion detection data are guaranteed.

The invention belongs to the technical field of mixing, and particularly relates to a mixing device and method for flue corrosion protection agent production, the mixing device comprises a mixing barrel and an inner barrel fixedly arranged in the mixing barrel, a cover plate is fixedly arranged on the mixing barrel, a rotating barrel is rotationally arranged on the inner barrel in a sleeving mode, and tooth protrusions are arranged on the rotating barrel; magnetic strips with alternating polarities are fixedly arranged in the rotating barrel in an array manner; wherein a spline sleeve shaft of the telescopic rotating mechanism is combined with a reciprocating groove of a sleeve and a convex rod of an embedded assembly, so that the telescopic mixing paddle can be driven to do composite motion of rotating and lifting, and meanwhile, a movable plate of the telescopic mixing paddle does horizontal reciprocating sliding under the action of attraction force and repulsive force of a magnetic strip and a magnetic block and an elastic telescopic rod, so that three-dimensional composite stirring is formed; the rubber scraping plate moves along with the moving plate, raw materials attached to the inner wall of the inner barrel can be intermittently scraped off, caking of the raw materials is avoided, and when the mounting base synchronously moves along with the moving plate, the inclined sawteeth on the mounting base can effectively cut powder balls in the raw materials.

The utility model discloses a weighing type sulfuric acid anti-corrosion filling machine which comprises a first filling area and a second filling area which are arranged in parallel, and each of the first filling area and the second filling area is composed of a rack and a conveying mechanism penetrating through the rack. A sulfuric acid conveying assembly parallel to the conveying mechanism is installed on the portion, behind the conveying mechanism, of the supporting plate face of the machine frame, a height lifting mechanism is arranged on the portion, between the conveying mechanism and the sulfuric acid conveying assembly, of the supporting plate face, a PFA lining structure is arranged on the inner wall of a pipeline of the sulfuric acid conveying assembly, and the adjacent pipelines are in sealed connection through flanges. The surface of the stainless steel pipe is lined with a PFA material, conveying and filling of high-corrosion liquid such as sulfuric acid are achieved through the fluorine lining valve and the corrosion-resistant hose, the whole machine achieves high-precision filling metering through the two sets of filling stations, and gas generated by the solution is collected and treated through the cover structure and the acid mist collecting device. And high-speed precise filling operation of high-corrosivity materials such as sulfuric acid is achieved.

The invention discloses a compound environment-friendly corrosion inhibitor as well as a preparation method and application thereof. The choline ionic liquid comprises choline ionic liquid and amino acid, the choline ionic liquid is choline cations; the amino acid is one or more of cysteine and tryptophan. The compound environment-friendly corrosion inhibitor has high corrosion inhibition efficiency, and the compound structure of the compound environment-friendly corrosion inhibitor further improves the protection performance of the compound environment-friendly corrosion inhibitor through a dual adsorption mechanism of the synergistic effect of physical adsorption and chemical adsorption on the metal surface. According to the compound environment-friendly corrosion inhibitor, a full-green ionic liquid corrosion inhibition system is constructed, the environment-friendly requirement is met, and a metal protection solution can be provided for industrial acid pickling and other strong acid working conditions. Not only is the progress of a corrosion inhibition technology promoted, but also more economic and environment-friendly anti-corrosion application can be provided for actual industrial scenes.

The invention discloses a stiff composite pile structure for a fan foundation and a design method, a composite pile comprises an anti-corrosion outer core reinforcement body, an anti-corrosion inner core rigid pile and a pile end bearing mechanism, and the anti-corrosion outer core reinforcement body, the anti-corrosion inner core rigid pile and the pile end bearing mechanism are coaxially nested or fixedly connected to form a composite anti-corrosion and cooperative bearing structure; the design method covers the whole process of geological survey, parameter design, performance checking calculation and the like. The problems that under the plain complex geology, the pile body is poor in corrosion resistance, not matched in bearing capacity and large in construction difficulty are solved in a targeted mode, the beneficial effects of being long in corrosion resistance service life, high in cooperative bearing efficiency, high in adaptability and excellent in economical efficiency are achieved, and the long-term service requirement of a draught fan foundation can be met.

The invention discloses a flatness detection device for air conditioner metal pipeline spraying, and relates to the technical field of pipeline anti-corrosion spraying. The flatness detection device for spraying of the air conditioner metal pipeline comprises a spraying bin, an input pipeline is assembled at the top of the spraying bin, and an air draft pipeline is assembled at the bottom of the spraying bin; and the recycling bin filter plate is assembled between the spraying bin and the recycling bin. According to the flatness detection device for spraying of the air conditioner metal pipeline, the air conditioner metal pipeline is put into the spraying bin, a high-pressure liquid pump and a servo motor are started, and a reciprocating lead screw, a square pipeline, a pipeline connector, a gear, a first toothed bar, a second toothed bar, a connecting rod and a limiting rod are matched, so that anti-corrosion liquid can be rotationally sprayed out in different rotating directions; and in the reciprocating motion process of the spray head, the infrared distance meter can perform corresponding flatness detection operation on the air conditioner metal pipeline which is just sprayed, so that the detection efficiency of the device is improved.

The invention relates to the field of coatings, and discloses a high-chroma corrosion-resistant yellow coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 50 to 60 parts of waterborne epoxy modified organic silicon resin, 25 to 35 parts of modified bismuth vanadate, 1 to 2 parts of nano cellulose, 0.3 to 0.8 part of dispersing agent, 0.2 to 0.5 part of defoaming agent, 0.2 to 0.5 part of flatting agent and 2 to 3 parts of corrosion inhibition pigment. The formula system of the high-chroma corrosion-resistant yellow coating is innovative, a waterborne epoxy modified organic silicon resin-modified bismuth vanadate-nanocellulose ternary synergistic system is constructed, and the high-chroma corrosion-resistant yellow coating has excellent chroma and corrosion resistance. According to the coating, flaky bismuth vanadate generated through microwave method induction is adopted, lattice defects are few, chromaticity is broken through, and high corrosion resistance is achieved.

The invention relates to the technical field of binders, in particular to a lithium ion battery negative electrode binder and a preparation method thereof, the lithium ion battery negative electrode binder comprises the following raw materials by weight: 15-45 parts of a temperature resistant material, 10-20 parts of a toughening material, 6-10 parts of an anticorrosive filler, 50-150 parts of bisphenol epoxy resin and 1-5 parts of a reducing agent. According to the preparation method, side reactions existing in the preparation process of the lithium ion negative electrode battery are inhibited, the electrochemical stability, interface compatibility and processing performance of the lithium ion battery are improved, the binding force of the negative electrode binding interface of the lithium ion battery can be enhanced, a rigid-flexible interpenetrating network is formed, the fracture toughness of the binding agent is improved, and the service life of the binding agent is prolonged. Through the synergistic effect of fluorination modification and a rigid framework, the three-in-one performance of high adhesion, electrolyte resistance and high temperature resistance is achieved, cerium oxide nanoparticles can be subjected to oxidation reduction, free radicals are eliminated, electrolyte oxygenolysis is inhibited, and the problems that an adhesive is weak in adhesion force and poor in electrolyte corrosion resistance stability are solved.

The embodiment of the invention provides a plastic-coated steel pipe and a plastic coating process thereof, and relates to the technical field of plastic-coated steel pipes. The plastic-coated steel pipe comprises a steel pipe base body, a metal transition layer, an inner anticorrosive coating, a fiber reinforced winding layer and an outer protective coating are sequentially arranged on the outer surface of the steel pipe base body from inside to outside, and the metal transition layer is a nickel-chromium-aluminum-yttrium alloy layer and is formed on the surface of the steel pipe base body through a supersonic plasma spraying process. And the inner anticorrosive coating is formed by a mixture of bisphenol F type epoxy resin and novolac epoxy resin, and is doped with silicon nitride and zirconium oxide composite nanoparticles subjected to surface treatment. By arranging a multi-stage composite structure of the metal transition layer, the high-temperature-resistant anti-corrosion coating, the fiber reinforcement layer and the self-repairing outer layer and arranging the detachable heat insulation sheath, the interface bonding strength, heat resistance, mechanical damage resistance and corrosion resistance of the plastic-coated steel pipe are improved; and the service life of the composite material in high-temperature, strong-corrosion and complex construction environments is effectively prolonged.

The invention belongs to the technical field of transformer substation grounding grid monitoring, and discloses a transformer substation main grounding grid real-time safety monitoring system based on multi-sensor fusion, which adopts a MySQL and InfluxDB mixed architecture through a dynamic association database module, and stores static data such as transformer substation position, grounding grid material and the like, and dynamic data such as soil parameters, corrosion rate and the like respectively; meanwhile, a soil parameter and sampling frequency dynamic mapping table is built in, and when it is recognized that the soil salinity is larger than 15 mS / cm or the pH is smaller than 5.5, a sampling frequency adjusting instruction can be sent to the sensor array module, and the automatic soil sample collecting device is started; the module also establishes a material corrosion digital twinborn model and a climate partition library, provides scene data for the scheme dynamic adaptation and operation and maintenance module, enables the scheme dynamic adaptation and operation and maintenance module to output an adaptive scene corrosion prevention scheme, calculates a grounding electrode replacement period according to a corrosion rate, constructs a dynamic association between a soil working condition and corrosion protection, and effectively improves the durability of a grounding grid.

The invention belongs to the technical field of corrosion prevention and sterilization in oilfield production and oilfield chemistry, and particularly relates to a high-temperature-resistant corrosion inhibition bactericide and a preparation method and application thereof. Specifically, the high-temperature-resistant corrosion inhibition bactericide comprises an organic corrosion inhibitor, an inorganic corrosion inhibitor, a bactericide and water. The high-temperature-resistant corrosion inhibition bactericide disclosed by the invention has broad-spectrum efficient bactericidal performance, high temperature resistance, salt-resistant corrosion inhibition performance, acid resistance and alkali resistance, and meets the application requirements in oil field production.

The invention discloses a self-repairing chromium-free passivator, a preparation method thereof and application of the passivator in the field of corrosion prevention of alloy workpieces. The passivating agent is composed of a bifunctional silane coupling agent, a fluoride-free inorganic film-forming agent, an organic film-forming agent, a corrosion inhibition synergistic system, a nano-composite reinforcing system, self-repairing microcapsules, an anti-biological adhesion component and a functional auxiliary agent. The problems that an existing passivating agent contains chromium or fluorine, environmental protection risks exist, the self-repairing function is lost, a base material is corroded, and the process efficiency is low are solved. The passivating agent is free of chromium and fluorine, the adhesive force of the passivating agent and a zincizing / multi-component alloy co-permeation layer is larger than or equal to 7 MPa, the neutral salt mist resistance is larger than or equal to 1700 h, the self-repairing efficiency after a film layer is damaged is larger than or equal to 85%, the single-batch period of the preparation technology is smaller than 1 h, and the passivating agent is suitable for large-scale application in severe scenes such as railways and oceans.

The invention relates to the technical field of coatings, in particular to graphene-based composite zinc powder primer as well as a preparation method and application thereof. The primer is formed by mixing and curing a component A and a component B, wherein the component A comprises organic bentonite, a polar additive, a mixed solvent, a silane coupling agent, a dispersing agent, epoxy resin, a defoaming agent, a flatting agent and graphene-modified zinc-tin composite powder; the component B comprises polyamide and a mixed solvent; the graphene-modified zinc-tin composite powder is prepared by the following steps: treating zinc powder to obtain carboxylated zinc powder, modifying the carboxylated zinc powder with mercaptoacetic acid and 4-mercaptophenyl acetic acid to obtain surface modified zinc powder, reacting the surface modified zinc powder with stannous chloride to obtain zinc-tin composite powder, and finally carrying out ball-milling compounding on the zinc-tin composite powder and graphene oxide. The anti-corrosion coating can effectively inhibit zinc powder agglomeration and enhance interface bonding, has excellent corrosion resistance, adhesive force and mechanical properties, and is suitable for metal corrosion resistance in severe environments such as ocean engineering and the like.

The invention relates to the technical field of water treatment agents, and particularly discloses an anti-corrosion deoxidizing composite agent for geothermal well recharge water and a preparation method of the anti-corrosion deoxidizing composite agent. The invention relates to an anti-corrosion and deoxidizing composite agent for geothermal well recharge water. The anti-corrosion and deoxidizing composite agent comprises the following raw materials: 30-40 parts of double modified sodium sulfite, 10-20 parts of a corrosion inhibitor, 8-15 parts of a scale inhibitor, 5-10 parts of amino trimethylene phosphonic acid, 5-10 parts of etidronic acid, 3-8 parts of polyethylene glycol monomethyl ether acrylate and 40-50 parts of deionized water. The dual-modified sodium sulfite is obtained by sequentially modifying sodium sulfite with a silane coupling agent and acrylic acid. The corrosion-resistant and oxygen-removing composite agent has the advantage of being high in oxygen-removing efficiency stability, the corrosion-resistant and scale-inhibiting functions are synchronously and synergistically improved on the basis that the oxygen-removing efficiency stability is guaranteed, and the complex working condition requirements of geothermal well recharge are completely met.

The application discloses a nodular cast iron pipe with a composite coating and belongs to the technical field of metal corrosion prevention, comprising a nodular cast iron pipe base body, a composite outer coating coated on the outer surface of the nodular cast iron pipe base body and an inner coating closely attached to the inner surface of the nodular cast iron pipe base body, characterized in that the composite outer coating comprises an alkali-activated gel layer and a zinc-based coating, the zinc-based coating is arranged between the outer surface of the nodular cast iron pipe base body and the alkali-activated gel layer, the alkali-activated gel layer is an alkali-activated slag fly ash corrosion-resistant gel material, and the zinc-based coating is one or more of a pure zinc coating, a zinc-aluminum alloy coating or a zinc-rich coating layer. The alkali-activated gel layer provided by the application is coated on the inner or outer surface of the pipe and provides further corrosion protection for the nodular cast iron pipe, so that the pipe can be used in extremely harsh construction environments, and has extremely strong weather resistance in acidic soil and overhead fields.

The invention discloses a sensor for detecting gas based on a two-dimensional material, and relates to the technical field of semiconductor sensors and battery safety. In order to solve the problems that an existing lithium ion battery management system lags in early warning and a traditional sensor is difficult to integrate and not resistant to corrosion, flexible polyimide is used as a substrate of the sensor, a back gate type two-dimensional material field effect transistor serves as a core, and a gate dielectric layer is arranged between a gate and a two-dimensional material channel in a spaced mode. A functional modification layer is arranged on the surface of the channel to improve the gas recognition specificity, a breathable hydrophobic layer covers one side deviating from the gate dielectric layer, and the breathable hydrophobic layer is matched with a passivation layer and a sensing window to form anti-corrosion packaging. The sensor can be implanted into a battery, real-time in-situ detection of ppb-level trace characteristic gas is realized through an adsorption-charge transfer-field effect amplification mechanism, and the sensor is linked with a BMS (Battery Management System) to realize ultra-early warning of thermal runaway. The device has the advantages of flexibility, easiness in integration, high sensitivity, corrosion resistance and long service life, and the safety management level of the battery is greatly improved.

The present application relates to the technical field of resin coating, and particularly relates to a preparation method of modified acrylic resin and application thereof, which comprises the following steps: firstly, hydrolysis and condensation of multiple organosilicon alkoxyl monomers, then grafting with epoxy resin to obtain organosilicon-epoxy resin containing vinyl; subsequently, under the protection of nitrogen, a premixed solution of styrene, multiple acrylate monomers, initiator and solvent is added dropwise into a reaction kettle containing the resin, and after polymerization by staged heat preservation, parameters are adjusted to obtain the modified acrylic resin. The resin has a ternary hybrid structure of acrylic acid, epoxy and organosilicon through grafting, condensation and copolymerization, and has good film forming property, high adhesion, excellent high temperature resistance and flexibility. The coating prepared by using the resin can realize normal temperature self-drying, and the coating layer is dense and smooth, has strong adhesion, good corrosion resistance and impact resistance, and can withstand high temperature and cold cycle, and is suitable for protection of parts which need long-term high temperature and corrosion resistance.

The invention relates to the technical field of power plant monitoring equipment, and discloses an abnormity monitoring device and system for deep cleaning of a wind power plant unit water cooling system, which comprises a multifunctional anti-corrosion water tank, a large-flow pulse type anti-corrosion flushing pump, a connecting assembly and a monitoring assembly, a three-stage filtering system, a temperature control assembly and a liquid level detection component are arranged in the multifunctional anti-corrosion water tank, the three-stage filtering system is sequentially provided with a rough filtering filter screen, a fine filtering filter screen and a self-cleaning filter screen in the flowing direction of cleaning liquid, and the self-cleaning filter screen is provided with a back washing spray head in a matched mode. Through full coverage of monitoring dimensions, various types of anomalies such as flow, concentration, corrosion, leakage and filter screen state can be identified, especially hidden anomalies such as early corrosion and trace leakage of a pipeline, equipment damage is avoided, early warning and response are automatic, occurred anomalies can be rapidly identified through real-time early warning, potential risks can be prompted in advance through pre-judgment early warning, and the early warning efficiency is improved. Automatic response can reduce manual intervention and improve cleaning efficiency.

The invention discloses a wear-resistant stone-impact-resistant powder coating and a preparation method thereof, and belongs to the technical field of paints.The wear-resistant stone-impact-resistant powder coating has the advantages that epoxy resin, a polyurethane prepolymer mixture and a high-temperature-resistant and low-temperature-resistant elastomer modifier are compounded to form an epoxy-polyurethane-elastomer chemical bonding effect, and the wear-resistant stone-impact-resistant powder coating is excellent in compatibility and better in crosslinking density, flexibility and elasticity; the stone impact resistance is greater than or equal to 4B grade, and the problem of poor stone impact resistance of a powder coating in the prior art is effectively solved; the epoxy resin is compounded by bisphenol A epoxy resin and hydrogenated bisphenol A epoxy resin, and forms a coating system with a composite antirust system, a gradient wear-resistant filler (compounded by nano ZrO and emery powder), a composite antirust system and a composite flame retardant, and interacts with each other, so that the wear resistance, the impact resistance, the flame retardance and the corrosion resistance of the coating are further enhanced, and the service life of the coating is prolonged. And the coating is durable, so that the frequent maintenance or replacement requirement of the chassis is reduced, and the coating is also suitable for protecting high-value parts of the new energy automobile.

The invention belongs to the technical field of coatings, and discloses a room-temperature curing water-based Dacromet coating as well as a preparation method and application thereof. The room temperature curing water-based Dacromet coating is prepared from 10 to 15 parts of silica sol, 20 to 40 parts of water, 0.1 to 0.5 part of inorganic acid, 5 to 15 parts of silane monomer, 2 to 10 parts of aluminum silver paste, 30 to 50 parts of flaky zinc powder, 0.5 to 2 parts of corrosion inhibitor, 0.5 to 5 parts of dispersing agent, 0.5 to 2 parts of multiwalled carbon nanotube, 0.5 to 2 parts of graphene, 0.05 to 0.5 part of defoaming agent and 0.05 to 0.5 part of wetting agent. According to the invention, through accurate screening and proportion optimization of all the components, the synergistic interaction among all the components is realized, so that the prepared coating can be cured only at room temperature. After being cured, the prepared coating shows excellent adhesive force and can be firmly attached to the surface of a base material; and in the aspect of corrosion resistance, by virtue of the shielding effect of the sheet zinc and the graphene and the synergistic effect of multiple protection mechanisms of cathode protection of the zinc-aluminum and the carbon nanotubes, the coating has excellent corrosion resistance, and an energy-saving, low-carbon and efficient protection solution is provided for a fastener of an electric power system.

The invention provides a treatment method for synergistically enhancing the comprehensive performance of a neodymium-iron-boron magnet, and belongs to the technical field of magnetic materials. According to the method, a heavy rare earth layer and a corrosion-resistant metal layer such as copper, nickel and cobalt for promoting grain boundary diffusion of heavy rare earth are respectively deposited on the surface of the neodymium-iron-boron magnet by adopting a multi-layer electroplating method, the coercivity of the neodymium-iron-boron magnet is enhanced through grain boundary diffusion, and the corrosion resistance of the magnet is enhanced through a nickel-cobalt coating. The treatment method comprises the following steps: carrying out electrochemical deposition on the neodymium-iron-boron magnet in a heavy rare earth metal plating solution, and then respectively electroplating a copper plating layer and a nickel-cobalt plating layer to obtain a heavy rare earth-containing plating layer with strong corrosion resistance and good plating film binding force; the neodymium-iron-boron magnet containing the heavy rare earth coating is subjected to heat treatment, and the coercive force of the magnet is improved through heavy rare earth grain boundary diffusion. The neodymium iron boron grain boundary diffusion process and the surface corrosion prevention process are subjected to integrated treatment, the technological process of high-performance neodymium iron boron industrial preparation is shortened, and the coercive force and the corrosion resistance of the magnet are comprehensively enhanced.

The invention provides a preparation method of a stable-size and high-strength laminated timber, which comprises the following steps of: mixing boric acid and choline chloride, and heating and melting at 90 DEG C to form a uniform, stable and transparent liquid, so as to obtain a deep eutectic solvent DES; the preparation method comprises the following steps: under the vacuum degree of-0.1 MPa, dipping wood veneers in DES, performing high-temperature steam sterilization treatment under the condition of 121 DEG C, assembling the veneers subjected to multi-layer treatment according to a rift-grain mode, and performing hot pressing at 160 DEG C to obtain the laminated timber with stable size and high strength. The prepared laminated timber has dimensional stability and good mechanical properties, has structural applicability of direct contact with a moisture environment, and has the advantages of mildew resistance, corrosion resistance, flame retardance and the like.

The utility model relates to the technical field of composite plates, in particular to a lightweight composite steel plate which comprises a lower two-way steel surface layer, a lower structural adhesive layer, an aluminum alloy honeycomb core layer, an upper structural adhesive layer and an upper two-way steel surface layer which are sequentially laminated from bottom to top, and a circle of stainless steel covered edge is welded and sealed along the peripheral contour of the laminated structure. Sealant and an insulating ceramic fiber belt are filled in the joint positions of the stainless steel covered edge and the lower bidirectional steel surface layer and the upper bidirectional steel surface layer. Petroleum corrosion media are directly resisted through the dual-phase steel panel, the weight is effectively reduced through the aluminum alloy honeycomb core structure, a continuous closed structure is formed through stainless steel covering edges and sealing filling on the edges, external corrosion media are prevented from invading, and the long-term corrosion resistance reliability of the material in a harsh petroleum environment is improved while the structural strength is guaranteed; and the maintenance dependence of the traditional anti-corrosion coating is reduced.