4239 results about "Anti-corrosion" patented technology

The invention discloses a processing method of a fusion device, and belongs to the technical field of nuclear fusion. The processing method comprises the following steps: carrying out at least one time of vacuum heat treatment on a Dewar embedded part blank; carrying out cleaning anti-corrosion treatment and physical correction treatment on the surface of the dewar embedded part blank subjected to heat treatment; carrying out grinding and polishing treatment on the surface of the Dewar embedded part blank subjected to the cleaning and antiseptic treatment and the physical correction treatment to obtain the Dewar embedded part; the Dewar embedded part is transported to the installation position of the window to be installed, and the Dewar embedded part located at the installation position is temporarily fixed; performing concrete pouring on the mounting position of the Dewar embedded part; and after the concrete is solidified, a cast-in-place concrete structural body is formed in the area below the Dewar embedded part, and a part of the Dewar embedded part is embedded into the cast-in-place concrete structural body. By means of the method, the magnetic conductivity of the Dewar embedded part is reduced, and the risk that elements are activated to form isotopes with the long decay period and the high irradiation dose rate or isotopes with the short decay period and the high irradiation dose rate is reduced.

The invention discloses a pattern recognition type metal pipeline anticorrosive coating quality detection device and system, belongs to the technical field of sensing monitoring, and aims to solve the problems of low detection precision and difficulty in positioning of damaged points of a metal pipeline anticorrosive coating under the interference of a complex environment. The method comprises the following steps: generating an environmental interference spectrum feature library through full-range frequency band pre-scanning, dynamically establishing a reference noise level, screening candidate frequencies of detection signals, and switching the frequencies as required to guarantee signal quality; synchronously acquiring a potential gradient and an electromagnetic radiation signal, and marking space-time coordinates; performing deep processing on the acquired signals, separating multi-frequency signals, correcting attenuation, and constructing a multi-dimensional feature vector; based on the feature vector, a space-time abnormal mode is extracted to position a damage point, through damage type classification, region area measurement and depth evaluation, the damage severity is quantified, accurate data support is provided for pipeline maintenance, and the accuracy and reliability of metal pipeline anticorrosive coating detection are effectively improved.

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention relates to the technical field of concrete pool heavy anti-corrosion coating construction, and discloses a concrete pool heavy anti-corrosion coating multi-layer spraying intelligent planning construction method which comprises the steps that spraying time sequence parameters, material combination and a basic spraying parameter set of all coatings are determined on the basis of pool structure parameters and anti-corrosion grades; generating a spraying path planning set in combination with equipment attributes and environment data, and defining an execution priority; a spraying parameter correction list and a quality verification scheme list are generated according to the construction period, the drying rate and the like; and associating real-time data to form an intelligent construction overall scheme. The method also covers regional process boundary determination, construction mode switching, path optimization, quality verification, construction data management and the like. According to the method, accurate control and quality optimization of multi-layer spraying are achieved through multi-factor fusion and an intelligent algorithm, the construction efficiency and the anti-corrosion performance are improved, and the method is suitable for heavy-duty anti-corrosion construction of the concrete pool.

The invention relates to a self-repairing anti-corrosion water-based paint applied to the field of paint compositions, which is prepared by the following steps: firstly, preparing a self-repairing microcapsule encapsulated with a self-repairing agent and a corrosion inhibitor, and then uniformly dispersing the self-repairing microcapsule into water-based base resin under a low-shear condition; the prepared coating can be applied to the surface of a pretreated metal base material in a brush coating, spray coating or blade coating mode and the like, a micron-sized anti-corrosion coating is formed after curing, under the normal condition, the microcapsules are placed in the coating in a standing mode and do not work, when scratches occur, the self-repairing microcapsules are broken and play a role, and the corrosion resistance of the coating is improved. The self-repairing agent rapidly fills and heals the damaged part of the coating to form a new barrier layer, the corrosion inhibitor forms a protective film on the exposed metal surface to inhibit the corrosion reaction, and the synergistic mechanism can effectively delay the corrosion diffusion of the scratched part, so that the protection integrity of the coating on the base material is maintained, and the service life of the coating is prolonged. And the coating can be suitable for metal structure protection in severe environments such as ocean climate, high-humidity and high-salt environments, acid rain regions, chemical environments and the like.

The invention discloses an anti-corrosion coating method for a steel structure, belongs to the technical field of metal anti-corrosion coating, and solves the problems of reduced anti-corrosion effect and short maintenance period caused by incomplete pretreatment, insufficient coating adhesive force and poor complex environment adaptability in the existing anti-corrosion coating process for the steel structure. According to the technical scheme, the method is characterized by comprising the steps that the surface of the steel structure is pretreated through chemical oil removal, sand blasting and acid pickling and phosphating; epoxy zinc-rich primer, epoxy micaceous iron oxide intermediate paint and polyurethane finish paint are sequentially sprayed, and plasma treatment is introduced in the coating of each layer so as to enhance the interface bonding force of the coating; the uniformity and the corrosion resistance of the coating are optimized by regulating and controlling spraying parameters, plasma processing power and a gas ratio; and finally, a gradient heating curing process is adopted, so that the compactness and durability of the coating are ensured. The method is mainly used for long-term anti-corrosion protection of steel structures such as bridges and buildings, and the anti-corrosion performance and the service life in a complex environment can be remarkably improved.

The invention discloses composite powder, a metal anti-corrosion coating composition, a preparation method of the metal anti-corrosion coating composition and a metal anti-corrosion method. Zn < 2 + > and imidazole ligands are self-assembled on the surface of GO in situ in DMF to prepare composite powder with stable pore channels and barrier and self-repairing functions, and the composite powder is dispersed in an epoxy matrix to prepare the coating. When the coating is damaged, the MOF releases Zn < 2 + > to form a passive film with the ligand, and the GO network delays medium diffusion and enhances mechanical properties. And the coating has remarkable salt mist resistance and self-repairing performance, and is suitable for corrosion prevention of metals such as steel, aluminum-magnesium alloy and the like.

The invention discloses a crosslinked polyethylene insulated submarine power cable, which relates to the technical field of submarine power cables, is used for carrying out power transmission in a deep seabed, and comprises a cable body, and the cable body sequentially comprises an insulated outer protective layer, a tensile layer, an anti-corrosion layer, a steel tape armoring layer and an insulating layer from outside to inside, the interior of the insulating layer is formed by mutually winding a plurality of groups of conductor insulating shielding layers, the interior of the conductor insulating layer is formed by mutually winding a plurality of groups of conductor shielding layers, and a conductor water-blocking layer is arranged between the conductor insulating shielding layers and the conductor shielding layers; the conductor shielding layer is composed of a first conductor, a semiconductor water-blocking tape and a second conductor in sequence from outside to inside, and the cable solves the problems that when the cable is used in the seabed for a long time, the cable sheath is damaged due to long-term seawater corrosion, high-pressure seawater is diffused in the longitudinal direction through gaps existing in the cable, the long-distance cable is damaged, and the service life of the cable is prolonged. Therefore, the problem that the power cable is damaged and cannot transmit power is solved.

The invention relates to the technical field of spraying control, in particular to an anti-corrosion steel pipe inner spraying track self-adaptive control system based on multi-sensor fusion. The feed-forward prediction module generates a feed-forward correction signal through a model compensator and a self-adaptive compensator and predicts and compensates system errors, the feedback control module comprises a track generator and a disturbance observer, a feedback control instruction is generated by comparing a correction track with an original track, an execution mechanism is dynamically adjusted, and the system error is predicted and compensated. The signal driving module adopts a frequency domain decoupling fusion technology, combines a feedforward correction signal and a feedback control instruction, generates a composite control instruction, and ensures the accuracy of trajectory tracking control. According to the invention, through a double-loop control architecture combining feedforward prediction and feedback disturbance suppression, high-precision and strong-robustness self-adaptive control of a spraying track under a complex working condition is realized.

The invention discloses a water-based multi-layer degradable self-polishing ship antifouling coating system and a preparation method thereof, and belongs to the field of marine anticorrosion and antifouling materials. The system is composed of a zinc-rich primer, a modified epoxy intermediate paint and a functionalized finish paint. The finish paint takes polyhydroxyalkanoate as a matrix, and integrates a self-stratification modifier capable of forming a silicon-rich top layer during curing and a latent dual-curing system capable of realizing normal-temperature curing through a synergistic effect. According to the present invention, the mixing mechanism of dynamic self-polishing and static fouling release is adopted, and the innovative curing technology is combined, such that the long working life, the excellent mechanical property and the long-acting antifouling ability are achieved. The drawing adhesive force of the system is not lower than 7.9 MPa, and the environment-friendly requirements that the content of volatile organic compounds is smaller than or equal to 50 g / L, and the content of free diisocyanate monomers is smaller than or equal to 0.1 wt% are met.

The invention belongs to the technical field of protective coatings, and discloses an anti-corrosion, wear-resistant and high-temperature-resistant coating as well as a preparation method and application thereof. The coating comprises a primer, a middle transition layer and a finish; the raw materials of the primer comprise a primer material and a primer curing agent component; the primer material comprises modified epoxy phenolic resin, a primer functional filler, a first mixed solvent, a high-temperature-resistant coupling agent and an anti-settling agent; the raw materials of the middle transition layer comprise a middle transition layer material and a middle curing agent component; the materials of the middle transition layer comprise polyimide modified epoxy resin, a wear-resistant filler, a reactive diluent, a carbon nanotube, a first dispersant and a compatilizer; the raw materials of the finishing paint comprise a finishing paint material and a finishing paint curing agent component; the finishing paint material comprises organic silicon modified fluorocarbon resin, finishing paint functional filler, a second mixed solvent, a second dispersing agent and a flatting agent. According to the invention, a resin-based composite coating system is synergistically designed through multi-phase materials, so that optimal balance of corrosion resistance, wear resistance, toughness and high temperature resistance of the coating is realized.

The invention discloses a graphene nanometer heavy anti-corrosion coating and a preparation method thereof, and belongs to the technical field of anti-corrosion coatings. The coating is prepared from the following components in parts by mass: 50 to 70 parts of diallyl bisphenol A type epoxy resin, 8 to 15 parts of histidine modifier, 12 to 20 parts of graphene nano composite modified filler, 5 to 10 parts of curing agent, 0.5 to 2 parts of flatting agent and 0.3 to 1 part of defoaming agent. The preparation method of the histidine modifier comprises the following steps: carrying out a Schiff base reaction on 1-palmitoyl-2-oleoyl ethanolamine and N-formyl-L-histidine to generate an intermediate A; reacting with a spiro quaternization reagent to form a quaternary ammonium salt intermediate B; and then compounding with aminopropyltriethoxysilane and silicotungstic heteropoly acid salt to obtain the product. The graphene nano-composite modified filler is prepared by modifying the surface of a graphene oxide / bentonite mutual intercalation layer structure through allyl trimethoxy silane. The graphene nano heavy anti-corrosion coating prepared by the invention forms a high-density cross-linked network, and has excellent barrier property, strong adhesive force, impact resistance and long-acting anti-corrosion performance.

The invention relates to the technical field of steel product coating thickness detection, in particular to a steel product anti-corrosion lining coating thickness detection device and method.The steel product anti-corrosion lining coating thickness detection device comprises a detection rack, a storage groove used for containing a steel plate is formed in the detection rack, and a detection mechanism used for detecting the steel plate coating thickness is further installed on the detection rack; after the steel plate is brushed by the brushing roller coated with the purple litmus solution, the purple litmus can be fully distributed on the plane of the steel plate coating and the convex part of the steel plate coating, and the concave part of the steel plate coating is not in contact with the purple litmus solution, so that the part which is not purple on the steel plate is the concave part of the steel plate coating; after the steel plate coated with the purple litmus is brushed by the brushing roller coated with the alkaline solution, if an area becomes blue, the coating of the steel plate has protrusions, then detection can be completed through two times of brushing, no dead angle exists in full-coverage brushing of the brushing roller, and the detection effect of the steel plate can be reflected more visually through comparison of pictures shot twice.

The invention discloses a sunlight response high-strength self-repairing polyurethane material and a preparation method thereof, and belongs to the technical field of self-repairing materials, the sunlight response high-strength self-repairing polyurethane material is obtained by coordinating polyurethane containing an azothiazole structure and metal ions according to a certain proportion, the polyurethane containing the azothiazole structure is prepared by stirring diisocyanate, diol containing the azothiazole structure, long-chain diol and aminophenylboronic acid according to a certain proportion in N, N-dimethylformamide at room temperature to react for 5 hours. According to the invention, a photoactive azothiazole structure is introduced into polyurethane, and reversible metal coordination bonds are formed by the azothiazole structure and metal ions, so that rapid sunlight response self-repairing of the polyurethane material is realized. The self-repairing efficiency of the prepared photoresponse self-repairing polyurethane material is 95.1% after the photoresponse self-repairing polyurethane material is irradiated by sunlight for 2 h, and the photoresponse self-repairing polyurethane material has rapid photoresponse self-repairing performance and has wide application prospects in the fields of self-repairing coatings, intelligent coatings and anti-corrosion coatings.

The invention discloses a corrosion-resistant coating for a pipeline and a preparation method of the corrosion-resistant coating, and belongs to the technical field of coatings. The preparation method comprises the following steps: weighing 100-110 parts by weight of epoxy resin, 1-3 parts by weight of a dispersing agent, 5-10 parts by weight of a thickening thixotropic agent and 1-3 parts by weight of a defoaming agent, dispersing for 0.5-1 hour, adding 10-15 parts by weight of a diluent, stirring, and filtering by a 60-mesh screen to obtain a component A; weighing 90-100 parts of a curing agent, 50-60 parts of an anticorrosive filler and 5-10 parts of an accelerant, dispersing for 0.5 h, and filtering with a 60-mesh screen to obtain a component B; and mixing the component A and the component B according to the mass ratio of 6: (2-3), and dispersing to obtain the pipeline coating. A chemical effect exists between the anti-corrosion filler and the epoxy resin, so that the anti-corrosion filler can be highly dispersed and stably exist in the coating, powder and an organic medium in the anti-corrosion filler can give full play to a synergistic effect, and the pipeline coating is endowed with excellent and stable corrosion resistance and the like.

The invention discloses two-dimensional porous nano NiFe2O4 and a preparation method of a self-repairing noise-reducing anticorrosive coating of the two-dimensional porous nano NiFe2O4. The NiFe2O4 precursor is prepared by adopting a hydrothermal synthesis method, the nano NiFe2O4 with a stable and regular two-dimensional porous structure is prepared by high-temperature calcination, and the nano NiFe2O4 is rich in pores and relatively large in specific surface area. Polyester glycol, diisocyanate and disulfide are used as raw materials, addition polymerization is performed according to the molar ratio of 1: 2: 1 to prepare a polyurethane matrix, and key process parameters such as a reaction solvent, atmosphere, temperature and time are optimized. Chemical bonds such as disulfide bonds are introduced, so that the coating is endowed with excellent self-repairing performance, and meanwhile, the noise reduction capability and the anti-corrosion effect of the coating are remarkably enhanced. The two-dimensional porous nano NiFe2O4 reinforced polyurethane prepared by the invention provides a brand new design thought and technical path for the field of self-repairing noise-reducing anticorrosive materials.

The invention relates to an anti-corrosion treatment process for a ship lock steel structure. The anti-corrosion treatment process comprises the steps that S1, the surface of the ship lock steel structure is pretreated; s2, the surface of the pretreated steel structure is coated with an anti-corrosion coating containing graphene modified zinc powder to serve as primer; s3, the surface of the primer is coated with super-strong epoxy paint, intermediate paint is formed, and the super-strong epoxy paint is amine adduct cured high-solid epoxy finish paint; s4, the surface of the intermediate paint is coated with a polyurethane coating to serve as finish paint; by selecting proper paint as primer, intermediate paint and finish paint, one scheme is suitable for all areas and can resist corrosion for a long time, and finally the problem that different areas need to be constructed in different areas is solved. According to the anti-corrosion scheme, the adhesive force is high, the shielding property is high, the water resistance is good, and the ultraviolet resistance is high.

The invention relates to the technical field of high polymer materials, and provides a radiation refrigeration coating and a preparation method thereof.The radiation refrigeration coating is prepared from, by weight, 5-20 parts of heat reflection filler, 5-20 parts of heat radiation filler, 5-20 parts of common filler, 0.1-0.5 part of a thickening agent, 10-25 parts of aerogel paste, 0.25-0.75 part of a water repellent agent, 0.2-0.5 part of a defoaming agent, 0.3-1.5 parts of a dispersing agent, 0.1-0.3 part of a pH value regulator and 0.3-1 part of a sterilizing, anti-corrosion and anti-mildew agent, 0.1-0.5 part of a wetting agent, 25-40 parts of an acrylic emulsion, 1-2 parts of an anti-freezing agent, 2-4 parts of a coalescing agent and 15-30 parts of water; the functional coating with both high reflection and radiation refrigeration, provided by the invention, is remarkable in reflective insulation / radiation refrigeration effect, non-toxic, odorless, pollution-free and convenient to construct, and is an ideal decorative material.

The utility model belongs to the technical field of anti-corrosion steel pipes, and particularly relates to an adhesive force testing frame for an anti-corrosion layer of a three-PE (Poly Ethylene) anti-corrosion steel pipe. The device comprises a support; the force application mechanism is arranged at the top end of the support, the force application mechanism comprises a pull rope, and the pull rope penetrates through the top end of the support and extends into the lower portion of the support; one end of the dynamometer is connected with the pull rope; and the clamp is connected with the other end of the dynamometer and is used for clamping the anti-corrosion layer. The tensile test device is used for solving the technical problems that in the prior art, the tensile test can be completed only by sampling the anti-corrosion steel pipe and feeding the sample into a test room, and the tensile test cannot be directly performed on the anti-corrosion steel pipe in the production and sales processes.

The invention discloses an anti-corrosion fireproof coating applied to a new energy battery box and a preparation method, and relates to the technical field of industrial coatings, the anti-corrosion fireproof coating comprises the following specific components: a base resin system, a curing agent, a functional filler system, a flame retardant system, a solvent system and an auxiliary agent system; the anticorrosive and fireproof coating further comprises additives, wherein the additives specifically comprise a functionalized MXene loaded lithium ion adsorbent, a metal organic framework encapsulated quaternary phosphonium salt, polyaryletherketone coated antimony trioxide nano-particles and boron-nitrogen co-doped graphene aerogel powder; the material is prepared based on the materials. According to the invention, multiple additives are synergistically introduced into a traditional basic coating system, and on the basis of a basic flame-retardant and anti-corrosion structure, lithium ion directional adsorption, gas-phase free radical active intervention, high-temperature carbonization barrier construction and three-dimensional thermal barrier network configuration are further realized; therefore, the multi-dimensional safety performance of the coating in battery thermal runaway, salt spray corrosion and high-temperature impact environments is remarkably improved.

The invention discloses an anti-corrosion treatment process for a transformer oil tank. The anti-corrosion treatment process comprises the following steps that S1, the surface of the oil tank is pretreated; step S2, coating a primer; s3, intermediate paint is coated; step S4, coating a finishing coat; and S5, coating post-treatment is carried out. By selecting high-performance anti-corrosion paint and a reasonable coating process, the anti-corrosion performance of the surface of the transformer oil tank is remarkably improved, erosion of various corrosion factors can be resisted for a long time, and the anti-corrosion performance is excellent; an air spraying method is adopted, so that uniform distribution of a coating on the surface of the transformer oil tank is ensured, and the problem that the anti-corrosion effect is reduced due to non-uniform coating is avoided; through surface pretreatment and selection of a high-adhesive-force coating, the binding force of the coating and a transformer oil tank base material is enhanced, and the durability and reliability of the coating are improved; the process adopts a mechanical coating method, so that the construction efficiency is improved, the labor intensity is reduced, and the construction efficiency is high.

The invention discloses a buoyancy pipe penetrating construction method, which is characterized in that a water source is used as a medium between an outer sleeve and an inner penetrating pipe, so that the smoothness of the construction process is ensured, and an inlet hole water stopping device and an outlet hole water stopping device are respectively arranged at two ends of the outer sleeve and are used as a sealing system of the water source. In addition, a limiting device, a limiting roller and an anti-collision roller are installed at the position of the inlet hole, the inner wall of the outer sleeve and the end of the inner penetrating pipe respectively. And finally, the inner penetrating pipe is smoothly pushed into the outer sleeve under the action of buoyancy. The problems that in a traditional roller launching method, a method for installing trundles on the outer wall of a pipeline and a pulley block propelling method, the roller structural strength is insufficient, durability is poor, and an outer anticorrosive coating of the pipeline is prone to being damaged are effectively solved, and the method is particularly suitable for large-diameter and long-distance inner penetrating pipe construction with the high requirement for finished product protection; and the method has good economical efficiency and implementation effect.

The invention relates to the technical field of building material anticorrosive coating spraying devices, in particular to a quick-release nozzle structure, a spraying device and a using method.The quick-release nozzle structure comprises a fan-shaped nozzle and a mounting piece matched with the fan-shaped nozzle, an integrally-formed mounting part is arranged on the outer side of the fan-shaped nozzle, a magnet is arranged on the surface of the mounting part, and a clamping groove is formed in the surface of the mounting part; a clamping groove is formed in the mounting part, a magnet is arranged in the clamping groove, a clamping block matched with the clamping groove is connected to the surface of the mounting part, and the spraying device with the nozzle structure is provided, so that quick disassembly and assembly between the fan-shaped nozzle and the mounting part can be realized through matched arrangement of all parts in the nozzle structure and by adopting a quick disassembly type connecting structure combining a buckle and the magnet; and stable connection and fixation can be provided while the nozzle replacement time is shortened, and the replacement efficiency is improved.

The invention discloses a large-span concrete structure construction method based on a frequency modulation mass damper, which comprises the following steps: firstly, erecting a formwork body, paving a beam bottom formwork, and then binding beam steel bars; then, profile steel embedded parts are installed, embedded lug plates are welded, and H-shaped steel beams are installed; then, a beam side mold is closed and reinforced; then, a frequency modulation mass damper is installed and welded and fixed, and a weld joint is coated with anti-corrosion and fireproof paint; construction of a structural formwork is conducted on the portion where the frequency modulation mass damper is installed; finally, concrete is poured; and after concrete pouring is completed, the formwork is removed, and construction of the large-span concrete structure with the frequency modulation mass damper is completed. The purpose of saving the construction period is achieved by improving the construction process, the project of reserving a hoisting hole is omitted by installing the damper in place in advance at a time, the risk of leakage of the structural slab due to a construction joint can be avoided, and the purpose of saving the construction period can be further achieved.

The invention discloses an anti-corrosion thermal insulation material, a preparation method and application thereof. The coating comprises the following components in parts by weight: 0.1-4 parts of graphene, 5-15 parts of composite microspheres, 10-30 parts of barium sulfate, 10-30 parts of film-forming resin, 18-45 parts of pigments and fillers, 1-8 parts of auxiliaries and 20-50 parts of deionized water. The anti-corrosion and heat-insulating material combines the advantages of graphene, composite microspheres and barium sulfate, and has excellent anti-corrosion performance and heat-insulating performance; the graphene and the composite microspheres can effectively reflect and block heat transfer, so that the temperature of the surface of the coating is reduced; due to the addition of barium sulfate, the stability and mechanical property of the coating are improved, and meanwhile, the corrosion resistance of the coating is enhanced; the preparation process is simple, low in cost and easy for industrial production; and the surface treating agent is suitable for various metal and non-metal surfaces, such as plates, industrial equipment, storage tanks, pipelines and buildings, and has a wide application prospect.

The welding equipment for the anti-corrosion tank comprises a bottom plate, a vertical frame is arranged at the top of the bottom plate, four sets of sliding rods and a lifting plate connected with the four sets of sliding rods in a sliding mode are arranged on the inner side of the vertical frame, a driving mechanism is connected to one side of the lifting plate, a rotating mechanism is installed on the other side of the lifting plate, and a bearing plate is arranged at the top of the rotating mechanism. The lifting plate can be driven by the driving mechanism to move up and down, the lifting plate can drive the rotating mechanism, the bearing plate and the welding gun to move up and down, so that welding operation of an anti-corrosion tank at different height positions can be facilitated, the distance between the welding gun and the anti-corrosion tank can be adjusted through the adjusting mechanism, and the anti-corrosion tank can be conveniently welded. The anti-corrosion tank welding device is simple in structure and suitable for welding operation of anti-corrosion tanks of different specifications, the welding gun can conveniently conduct welding operation on the anti-corrosion tanks at different angles through the rotating mechanism, then through arrangement, welding operation of the anti-corrosion tanks is facilitated, and the production efficiency of the anti-corrosion tanks is greatly improved.

The embodiment of the invention provides a heat exchange assembly, a battery device and an electric device. The battery device comprises a box body, a heat exchange assembly and a plurality of single batteries, the plurality of single batteries are arranged in the box body; the heat exchange assembly comprises at least two heat exchange pieces, at least one heat exchange piece is arranged to be a flexible piece, and at least one heat exchange piece is arranged to be a rigid piece. The flexible part and the rigid part are arranged in a stacked mode to form at least one medium flow channel. And at least one medium runner is used for conducting a heat exchange medium. At least one of the flexible member and the rigid member includes an anticorrosive layer. The anti-corrosion layer comprises a first anti-corrosion layer, and the first anti-corrosion layer is at least arranged in the area, where the medium flow channel is formed, of the rigid part. The first anti-corrosion layer comprises one or more of polypropylene, polyphenylene sulfide, polyphthalamide and polyethylene; or the first anti-corrosion layer is of a layered structure, and at least one layer, close to the medium flow channel, of the first anti-corrosion layer comprises one or more of polypropylene, polyphenylene sulfide, polyphthalamide and polyethylene.

The invention discloses a super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating on the surface of a medical instrument as well as a preparation method and application of the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating, and the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating is a surface hydrogel composite coating formed by taking N-(3, 4-dihydroxyphenethyl)-2-benzoylbenzamide (BPDA) as a primer and grafting a hydrophilic polymer on the primer. BPDA is deposited on the surface of the substrate, then hydrophilic monomer surface graft polymerization is initiated by light, and a hydrogel coating is constructed on the surface of the BPDA substrate. The BPDA primer provides excellent corrosion resistance, the corrosion rate of a metal substrate is effectively reduced, and benzophenone derivatives with photoreaction activity on BPDA molecules can mediate firm combination of the hydrogel layer; after meeting water, a stable and compact hydrated layer is formed, the super-lubricating property is achieved, adhesion of protein and cells can be remarkably inhibited, and thrombus formation is effectively prevented. The anti-corrosion and anti-blood coagulation coating has excellent anti-corrosion and anti-blood coagulation properties, and is widely applicable to anti-blood coagulation and anti-corrosion surface modification in the fields of medical instruments and the like.

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

The invention relates to the technical field of underwater pipeline measurement, in particular to a manifold connection pose measuring device suitable for an underwater limited space and a solving algorithm. The device comprises an angle measuring mechanism and a rope length detecting mechanism, and is fixed on a flange end face of a detected pipeline through a centering mechanism; the angle measuring mechanism is composed of an orthogonal shaft system and a magnetic coupling encoder, and the linear displacement is mapped into an angle signal by combining a sliding rail and a measuring rope extension arm; the rope length detection mechanism winds a stainless steel measuring rope through a friction hub in an anti-corrosion shell, and the number of rotation turns is detected through an encoder so as to calculate the rope length. The method comprises the steps of establishing a measuring rope infinitesimal stress model, calculating a suspension curve based on a parabola theory, constructing an absolute coordinate system and a reference coordinate system, and resolving the relative pose of the two pipelines through pose parameters and a transition matrix. The working load of a diver is reduced through lightweight design and a low-friction shaft system, and high-precision pose measurement is achieved by combining the parabola theory and dynamic coordinate transformation.