43results about How to "Isolated contact" patented technology

The invention provides a composite connection method for thick titanium alloy plates, and belongs to the technical field of metal material welding and additive manufacturing. According to the technical scheme, the method comprises the steps that symmetrical X-shaped grooves are machined in thick plate titanium alloy workpieces to be connected; a laser-electric arc hybrid welding system is adopted for conducting double-face bottoming welding on the X-shaped groove, so that a double-face bottoming welding seam is formed; and a powder feeding type laser cladding system is adopted, and multi-layer and multi-channel additive filling is conducted in the X-shaped groove above the double-face bottoming welding seam. According to the method, efficient laser-electric arc composite bottoming and low-heat-input laser cladding additive filling are separated, high-quality penetration of the root is guaranteed firstly, then welding deformation and residual stress are remarkably reduced through low-heat-input filling, the microstructure of a filling area is optimized, and therefore a welded joint with excellent comprehensive performance is obtained.

The utility model relates to the field of beverage bottle lid discloses a beverage bottle lid with press trigger suction accessory falling function, including the cover, the top of cover is provided with the false touch press assembly, the upper portion of cover is provided with the installation mouth, the top of cover is connected with the limit lug of fixed connection and the number is multiple, the false touch press assembly includes the protection cover, the bottom of protection cover is fixedly connected with the control pipe, the inside movable joint of control pipe has the press bar, the outside of control pipe is provided with the auxiliary pipe, the outside fixed connection of auxiliary pipe has the fixed ring, the fixed ring is fixedly connected with the inner wall of installation mouth. In the utility model, through setting false touch press assembly and setting limit lug and limit recess etc. between the cooperation of parts, the bottle cap can be effectively protected, the false trigger of bottle cap in the process of transportation or selling can be effectively avoided, is more practical.

The utility model provides a chemical agent storage device, and belongs to the technical field of chemical agents. Comprising a preservation box body, an inflation structure is installed on the upper wall face of the preservation box body, an exhaust structure is installed on the lower wall face of the preservation box body, three sets of preservation structures are installed in the preservation box body, and a refrigeration structure is installed on the rear wall face of the preservation box body; the air inflation structure comprises two air inflation frames, an air inflation bottle, an air inflation cover, an air inflation pipe and an air inflation valve; according to the utility model, the chemical agent is isolated and stored through the sealing structure, and the sealed container is filled with the blunt gas, so that the contact between the chemical agent and air can be effectively isolated, and the situation that the chemical agent loses efficacy is further prevented. Meanwhile, the chemical agent leakage detection device has an alarm function, if a container for containing chemical agents is broken, the built-in liquid sensor can detect liquid leakage, and then an operator is alarmed.

The invention discloses composite hydrogel containing azelaic acid and a preparation method of the composite hydrogel, and belongs to the technical field of skin medicines.The azelaic acid is loaded and free azelaic acid is fixed through a layered structure of Ca / LDH powder, and then polymerization modification is conducted through dodecyl methacrylate, so that the composite hydrogel can be firmly smeared on the skin and is prevented from being scoured by sweat, and the skin care effect is good. Moreover, the Ca / LDH powder has an ion exchange characteristic between layers, so that a slow release effect on azelaic acid can be achieved; encapsulated menthol exists in the composite hydrogel containing azelaic acid, the encapsulated menthol is used for clathrating menthol through the clathration of a chitosan / cyclodextrin encapsulation carrier, and after clathration of the chitosan / cyclodextrin encapsulation carrier, a compact crystal structure of the carrier and the cavity clathration of cyclodextrin form a double barrier, so that the composite hydrogel containing azelaic acid has a good barrier effect. Contact between menthol and outside air and temperature is isolated, and volatilization loss of menthol is greatly reduced.

This invention belongs to the field of accessory painting, specifically relating to an accessory painting mold and its usage method. The accessory painting mold includes a housing with a cover plate connected to its top. A placement plate, a painting mechanism, and a rotating mechanism are installed on the side of the housing. The placement plate is rotatably connected to the inside of the housing for fixing the accessory. The painting mechanism includes a pump body and a spray plate fixedly installed inside the housing. The rotating mechanism includes a threaded post and a connecting plate. Compared with the prior art, this invention, through the cooperative connection between the cover plate and each component, allows the accessory to be painted in a sealed space, thereby effectively improving the working environment. It also allows for rapid connection and positioning between the connecting post and the placement plate, improving the loading and unloading efficiency of electronic components. Furthermore, it allows for rapid flipping of electronic components during the painting process, effectively improving painting efficiency.

This utility model discloses an automobile wheel hub, including a rim body and a spoke body. The spoke body has a mounting groove at its center, and a through hole at its center. Several bolt holes are arranged around the outside of the through hole. A mounting sleeve is threaded into the through hole, and a protective cover is connected to the mounting sleeve. The protective cover is installed on the top of the mounting groove. Several locking grooves are arranged in a ring shape on the through hole, and a spring is installed in each locking groove. A magnetic plug is connected to the end of each spring. An annular groove is formed on the outside of the mounting sleeve, and the magnetic plug connects the annular groove and the locking groove. A driving groove is provided inside the mounting sleeve, and a cover is installed on the outside of the driving groove. This utility model protects the wheel hub bolts with the protective cover, effectively reducing the risk of wheel hub and tire theft. The magnetic plug locks the mounting sleeve to the spoke body, preventing the protective cover from being disassembled with ordinary tools.

The invention discloses an all-solid-state battery positive electrode material. The all-solid-state battery positive electrode material comprises a positive electrode active material and a composite sulfide solid electrolyte, the composite sulfide solid electrolyte comprises a sulfide solid electrolyte matrix and a metal fluoride layer coated on the surface of the sulfide solid electrolyte matrix, and the mass ratio of the positive active material to the composite sulfide solid electrolyte is 7: 3. The sulfide solid electrolyte is coated with a layer of metal fluoride, on one hand, the stable metal fluoride effectively isolates sulfide from being in direct contact with air, the air stability of the sulfide solid electrolyte is greatly improved, and the problem that the sulfide solid electrolyte is sensitive to air is relieved; on the other hand, the metal fluoride coating layer can prevent sulfide solid electrolyte from being in direct contact with the positive electrode material, the instability between the positive electrode material and the electrolyte is relieved, and an effective thought is provided for industrialization of the all-solid-state battery.

This application relates to the field of coating technology, specifically disclosing a heat-insulating, flame-retardant, and anti-corrosion coating and its preparation method. A heat-insulating, flame-retardant, and anti-corrosion coating comprises the following raw materials in parts by weight: 50-80 parts of silicone-acrylic emulsion, 10-15 parts of epoxy resin, 30-40 parts of heat-insulating microcapsules, 15-21 parts of hollow glass microspheres, 3-5 parts of dispersant, 0.5-2 parts of polypropylene glycol diglycidyl ether, 1-5 parts of leveling agent, and 15-20 parts of water. The heat-insulating microcapsules comprise an aluminum powder core and a heat-insulating and flame-retardant capsule wall layer, the capsule wall layer material comprising acrylic resin and polyamide resin. The preparation method is as follows: hollow glass microspheres and heat-insulating microcapsules are added to silicone-acrylic emulsion and water and dispersed evenly to obtain a mixture; the dispersant, polypropylene glycol diglycidyl ether, epoxy resin, and leveling agent are added to the above mixture and mixed evenly to obtain the interior wall insulation coating. The composition of this application achieves a comprehensive improvement in heat insulation, flame retardancy, and anti-corrosion performance.

This invention discloses a high-temperature resistant, long-life carbide-based multilayer special functional coating and its preparation method. The method includes the following steps: (1) carbide coating; (2) powder preparation; (3) transition layer spraying; (4) special functional layer spraying; and (5) protective layer spraying. The carbide-based multilayer special functional coating prepared by this invention can greatly improve the coating's high-temperature resistance, oxidation resistance, and service life, and can meet the needs of various fields for special functional coatings.

The invention provides an electrolyte and a secondary battery. The electrolyte comprises an organic solvent, a lithium salt, a film-forming additive and a metal corrosion inhibitor, the mass ratio of the metal corrosion inhibitor in the electrolyte is 0.001-2%; the metal corrosion inhibitor is a benzotriazole compound and / or a sulfonate compound; the chemical formula of the sulfonate compound is R-SO3M, R is C1-C16 straight-chain alkyl or phenyl-substituted C1-C12 straight-chain alkyl, and M is selected from any one of Li, Na and K. The invention further discloses a preparation method of the sulfonate compound. By adding the metal corrosion inhibitor according to the type and the mass ratio into the electrolyte, a protective layer can be formed on the surface of the steel shell of the cylindrical battery, so that the contact between acidic byproducts in the battery and the surface of the steel shell is isolated, the corrosion of the steel shell is inhibited, and the storage performance, the cycle life and the safety of the battery are further improved.

A combined floating pipe structure suitable for offshore floating photovoltaic platforms is characterized by comprising a core load-bearing pipe, a buoyancy layer, and ribs; the buoyancy layer is disposed outside the core load-bearing pipe and fixed by ribs that are fixedly connected to the core load-bearing pipe. This invention employs a steel-HDPE combined structure or a steel-airbag combined structure, combining high load-bearing capacity, high stability, and high durability.

The application provides a method for improving condensate water evaporation efficiency, comprising the following steps: embedding a serpentine metal condensate water evaporation pipe in the lower side of a water pan through an insert injection integrated molding process, improving the heat exchange area of the serpentine metal condensate water evaporation pipe and the water pan, and forming an integrated water pan structure with a lower surface protruding downward, the lower surface protruding downward can further increase the contact area with the compressor, improve the heat exchange effect, then arranging the water pan above the compressor of a refrigeration equipment, utilizing the heat synergistic effect of the serpentine metal condensate water evaporation pipe and the compressor of the refrigeration equipment, and improving the condensate water evaporation efficiency. The serpentine metal condensate water evaporation pipe and the water pan can be integrally formed at one time through the insert injection integrated molding process, the heat conduction contact area is increased, and the dirt accumulation dead angle is eliminated, through the structure arranged above the compressor, the heat exchange efficiency is improved, the multiple technical effects of efficient condensate water evaporation, pipeline corrosion prevention and production cost reduction are realized.

The invention provides a negative electrode current collector, a preparation method thereof and an all-solid-state battery. The negative electrode current collector comprises a substrate layer, a first coating and a second coating which are sequentially stacked, the first coating comprises a composite material with a first metal and MXene carbide, and the second coating comprises a second compound; wherein the first metal comprises at least one of silver, gold, tin, zinc, lead or bismuth; the general formula of the MXene carbide is Mn + 1CnTx, M comprises at least one of titanium, vanadium, niobium, molybdenum, tantalum, chromium, zirconium, hafnium, scandium or tungsten, n is equal to 1-3, and Tx comprises at least one of-OH,-O or-F; the second compound comprises at least one of aluminum oxide, magnesium oxide, lithium fluoride, magnesium fluoride, calcium fluoride or boron nitride. The negative electrode current collector, the preparation method thereof and the all-solid-state battery provided by the invention are simple in structure, convenient to manufacture and high in stability, and can improve the battery performance and prolong the service life.

This invention discloses a method and system for preventing oxidation of recycled copper rods, relating to the field of non-ferrous metal surface protection. The method includes material preparation, pretreatment, preparation of an anti-oxidation solution, dip coating, drying and curing, and packaging. This invention offers excellent anti-oxidation performance: the anti-oxidation film is dense and uniform, effectively isolating oxygen and moisture from contact with the copper surface. Recycled copper rods stored in a natural environment show no significant oxidation after more than 6 months, with an anti-oxidation efficiency ≥98%, far superior to traditional methods. The film exhibits strong adhesion: the silane coupling agent forms a chemical bond with the copper surface, and combined with the curing treatment, the film adhesion is ≥5N / cm, making it difficult to peel off and able to withstand minor friction during storage and transportation.

This invention provides a lithium metal anode, its preparation method, and its application. The lithium metal anode includes a lithium metal matrix and an activation layer covering at least a portion of its surface; the lithium metal matrix includes lithium and silver; the activation layer includes lithium nitride and a first silver halide, wherein the first silver halide includes silver iodide. This invention provides an activation layer with specific chemical activity on the surface of a silver-containing lithium metal anode. Silver iodide can form lithium transport channels, activating dead lithium and improving the battery's cycle performance. Simultaneously, Li3N is a good SEI component, which can inhibit dendrite growth, isolate the electrolyte from contact with the anode, reduce active lithium loss, and further improve battery cycle performance. Furthermore, halogens existing in the form of silver halides are resistant to high voltage and not easily oxidized; therefore, high-voltage cathode materials with higher energy density can be selected to achieve a significant improvement in the cycle performance of high-energy-density lithium metal batteries.

Provided is a joint of a copper terminal and an aluminium conductor. A copper terminal connecting member of the joint is connected to a conductive core of the aluminium conductor by means of a transition welding layer, and the joint can also be provided with a reinforcing welding layer. Further provided is a method for preparing the joint using plasma arc welding. According to the invention, the connection portion of the copper terminal with the aluminium conductor is filled with solder in a plasma arc welding manner, such that copper and aluminium are connected by means of the solder. Damage to an aluminium oxide layer during welding increases the conductivity and can also isolate the copper terminal and the aluminium conductor, thus preventing an electrochemical reaction between the copper and the aluminium, prolonging the service life of the joint of the copper terminal and the aluminium conductor, and ensuring the mechanical and electrical performances of the connection structure.

The application provides a kind of over rumen schizochytrium sp. Powder and its preparation method and application, product includes schizochytrium sp. Powder core material and coating protective layer two parts;Wherein, the schizochytrium sp. Powder core material is prepared by schizochytrium sp. Powder, forming agent, antioxidant and digestion promoting agent;The coating protective layer is prepared from over rumen protective material.The preparation method of the application obtains nanofiber protection structure by whole low-temperature process, new over rumen coating technology, realizes the technical effect that DHA of schizochytrium sp. Powder is high retention, high utilization, high stability, to effectively improve the enrichment of DHA in beef, simple process, good repeatability, can be widely applied in ruminant functional feed additive field, with good industrialization prospect and popularization value.

The utility model relates to a contact technology field discloses a kind of step composite silver contacts, including contact body, the outside of contact body is provided with protection mechanism, the bottom of contact body is fixedly connected with multiple contact pins, the bottom of contact body is provided with positioning mechanism, the positioning mechanism includes two supporting plates, two The outside of supporting plate is fixedly connected in the bottom of contact body two sides, and the outside of multiple contact pins is located in the outside adjacent side of two supporting plates, the bottom of two supporting plates is fixedly connected with multiple connecting columns. In the utility model, the preliminary positioning of curved surface ring and the cooperation of contact pin significantly improve the alignment accuracy of contact, and the supporting plate and the connecting column provide stable support for the contact body, ensuring that the contact body does not shake or deviate during operation. Even under the condition of external force or vibration, it can also maintain good working condition.

The invention discloses a preparation method of Pt-Pd coating slurry and a Pt-Pd coating. The coating can inhibit the inner wall of the EDC cracking furnace pipe from coking. The coating effectively isolates catalytic active sites on the metal surface from being in contact with a coking matrix, and the carbon deposition resistance is excellent; a coke layer and H2 generated by reaction can be catalyzed to generate redox reaction, so that the thickness of the coke layer is reduced; the coating is uniform in thickness, has the characteristics of excellent heat transfer performance, high temperature resistance, difficulty in falling off and simplicity in manufacturing, and is suitable for harsh conditions of high-temperature cracking processes such as dichloroethane, ethylene and petrochemical engineering.

The invention relates to the technical field of batteries, and discloses a sodium battery positive electrode material with a heterostructure and a preparation method and application thereof.The preparation method comprises the steps that 1, a nickel source, a manganese source and a first solvent are subjected to first mixing, and a solution A is obtained; carrying out second mixing on a niobium source and a second solvent to obtain a solution B; (2) under a protective atmosphere, carrying out a co-precipitation reaction on the solution A, the solution B, a precipitator solution and a complexing agent solution to obtain a first precursor material; (3) performing third mixing on the first precursor material, a lithium source and a sodium source, and performing first heat treatment to obtain a second precursor material; and (4) carrying out second heat treatment on the second precursor material to obtain the sodium battery positive electrode material with the heterostructure. According to the preparation method provided by the invention, a coprecipitation reaction is combined with a two-time heat treatment process, and the cathode material with a heterostructure, which is uniform in distribution and stable in structure, is prepared, so that the electrochemical performance of a battery is improved.

This utility model discloses a detachable and replaceable bridge deck drainage pipe device, including a steel sleeve, a drainage ring, a waterproof gasket, a grating cover, an inner drainage pipe, and a sealing and fixing layer. One end of the steel sleeve is threadedly connected to the drainage ring; the drainage ring is installed in an installation hole drilled in the bridge body, and its other end serves as an inlet connected to a drainage ditch. A second annular step is also provided on the inner wall of the pipe body; the grating cover is embedded in the inlet; one end of the inner drainage pipe has a retaining ring on its outer circumference, and the other end protrudes from the steel sleeve; the retaining ring is located inside the drainage ring; the waterproof gasket is fitted onto the inner drainage pipe, with its two ends respectively contacting the retaining ring and the second annular step for sealing and waterproofing; the sealing and fixing layer fills and seals the gap between the drainage ring and the installation hole. This utility model's drainage pipe device effectively isolates rainwater from contact with the steel sleeve and bridge reinforcement, preventing corrosion and concrete spalling, and improving bridge durability.

This application provides an anode material for solid-state batteries, a method for preparing the same, and a solid-state battery, relating to the field of solid-state batteries. The anode material includes secondary particles, which are spherical in shape and formed by stacking multiple primary particles. The primary particles include graphite and a coating layer distributed on at least a portion of the graphite surface. The coating layer is made of at least one of titanium dioxide, alumina, lithium niobate, lithium zirconate, lithium fluoride, silicon, and tin. The anode material of this application, comprising graphite and a coating layer on the graphite surface, effectively physically isolates the graphite from the contact with the sulfide solid electrolyte, significantly suppressing side reactions at the interface and effectively improving the first-cycle coulombic efficiency and cycle stability of the anode material.

This utility model discloses a sampler and a sampling device. The sampler includes: a sampling shaft having a plurality of longitudinally spaced sampling slots; and an outer sleeve coaxially fitted onto the sampling shaft and restricting only the longitudinal movement of the sampling shaft; wherein the outer sleeve has a plurality of slots that match the plurality of sampling slots; the sampling shaft is configured to rotate relative to the outer sleeve between positions where the plurality of sampling slots coincide with the plurality of slots and between positions where the plurality of sampling slots and the plurality of slots are completely offset. The sampling device includes a sampler and a sampling transition section. The advantages of this utility model are: it can achieve effective multi-point sample acquisition and can isolate the extracted material sample from the outside environment, effectively reducing the risk of sample contamination.

The invention discloses a preparation method of a silver-coated copper nanowire, and belongs to the technical field of nano material preparation. According to the silver-coated copper nanowire, a copper nanowire serves as an inner core, the outer side of the inner core is coated with a compact and continuous silver shell layer, and the preparation method comprises the steps that firstly, under the protection of inert atmosphere, long-chain alkylamine serves as a reducing agent and an end-capping reagent, and the copper nanowire with the high length-diameter ratio is synthesized through a thermal reduction method; and then, a chemical reduction deposition method is adopted, ascorbic acid serves as a reducing agent, a silver salt solution is slowly dropwise added into the copper nanowire dispersion liquid, and in-situ reduction and deposition are conducted on the surface of the copper nanowire to form a uniform silver shell layer. The preparation method effectively solves the problems that the copper core is easy to oxidize and the silver shell layer is discontinuous, and the prepared silver-coated copper nanowire has the characteristics of low cost, high conductivity, high oxidation resistance and excellent dispersity, and is very suitable for preparing a high-performance and flexible transparent conductive film.

The utility model relates to the field of alcohol filling, and particularly discloses an absolute ethyl alcohol filling device which comprises a main frame, a supporting plate is connected to the bottom face of the main frame, a groove is formed in the bottom face of the supporting plate, and the front face and the back face of the supporting plate are each connected with two supporting feet. The upper surface of each supporting leg is in threaded connection with a fixing pin, the upper surface of the main frame is connected with a driving part, and the upper surface of the supporting plate is connected with a filling assembly. Through linkage of a motor, a driving fluted disc, a driven fluted disc, a threaded rod and a threaded block, the protective cover can be driven to descend, a sealing groove is matched with a sealing strip of a supporting plate to form a sealed space, absolute ethyl alcohol is effectively prevented from making contact with outside air, volatilization is greatly reduced, and raw material loss and production cost are reduced; and meanwhile, the height of the filling valve seat can be flexibly adjusted through the electric hydraulic telescopic rod, so that the filling nozzle is accurately aligned with the bottle opening of the storage bottle, and an operator observes the filling condition in real time through the observation window.

The utility model relates to chemical analysis instrument technical field, concretely is a kind of automatic titration device, including support, reagent bottle is equipped with inverted installation on support, the convex peak that can be inserted into reagent bottle and multiple pipes on connecting convex peak, multiple first pipe holes are equipped on the convex peak, the inside of support is equipped with supporting plate, multiple second pipe holes are equipped on supporting plate, one end of pipe is connected first pipe hole, and the other end is connected titration tube through second pipe hole, color sensor is equipped above each titration tube, conical flask is equipped below each titration tube, magnetic stirrer is equipped below each conical flask, device supports multichannel synchronous operation, end point color can be calibrated storage, solve artificial titration end point determination error and fatigue problem, significantly improve the accuracy and efficiency of batch detection.

The utility model discloses a packaging structure for a chip, which comprises an electric connection limiting frame, an electric connection clamping groove is arranged in the electric connection limiting frame, the electric connection clamping groove is arranged in four inner walls, the outer part of the electric connection clamping groove is communicated with a plurality of electric connection jacks, and the plurality of electric connection jacks are respectively arranged in four side walls of the electric connection limiting frame. Through the combination of the electric connection limiting frame and the lamination limiting frame, the modular packaging of the integrated chip is realized, the design facilitates the installation, replacement and expansion of the integrated chip, the flexibility and maintainability of the packaging are improved, the multi-layer lamination of the integrated chip can be realized through the increase and decrease of the lamination limiting frame, and the packaging efficiency is improved. The structural design is suitable for application scenes needing high integration, the packaging density and the space utilization rate are effectively improved, the connecting lines are etched in the connecting pole pieces, customized design can be carried out according to the connecting requirements of different types of integrated chips, and the compatibility and adaptability of the packaging structure to different chips are improved through the design.

The application discloses a recyclable blow molding grade thermoplastic polyester elastomer and a preparation method thereof, which is prepared from the following components according to weight parts: thermoplastic polyester elastomer 92-99 parts, isocyanate chain extender 1-3 parts, difunctional epoxy resin 0.8-2.4 parts, and antioxidant 0.1-0.8%. In the blow molding process, the chain extender dimer and the epoxy group become the source of chain extension slow release, part of the dimer decomposes into monomers, and the monomers are chain-extended again, and meanwhile the remaining epoxy groups also participate in chain extension. The loss of chain scission degradation at high temperature is made up, the melt index and other performance changes are still small, and 100% secondary material is independently used. Through 5 times of double screw extrusion test, the melt index of the thermoplastic polyester elastomer changes very little, which provides reliable guarantee for the separate multiple recycling of the blow molding grade thermoplastic polyester elastomer in the factory.

The application provides an overload protector, a compressor and an air conditioner, and belongs to the technical field of compressors.The overload protector comprises a main body, an overload actuator and a plug for connecting with a motor lead wire are arranged on the main body, and the plug is electrically connected with the overload actuator.A sealing groove is arranged around the plug, and a base for connecting with the plug is arranged on the motor lead wire, and the base and the sealing groove are mutually sealed when the base is connected with the plug.The overload protector changes the exposed plug into a built-in structure, and the base of the motor lead wire and the sealing groove are mutually sealed when in use, so that the plug can be prevented from contacting with refrigerant, the leakage current of the compressor can be reduced, and the safety of the compressor is improved.

This utility model discloses a nylon protective disc for chains, specifically relating to the technical field of chain protection discs. It includes a first limiting plate and a second limiting plate, which are arranged opposite to each other. The surfaces of the first and second limiting plates are respectively provided with mounting grooves, and these mounting grooves are interconnected. This utility model, by employing an arc-shaped nylon protective structure, allows the first and second limiting plates, the second limiting plate, the first baffle, and the second baffle to fully cover the meshing area between the chain and the sprocket, directly preventing clothing such as trouser legs, shoelaces, and long skirts from getting caught in the transmission gap and avoiding tearing. Simultaneously, it isolates children's fingers from contact with the rotating chain, preventing pinching, abrasions, and other safety accidents, specifically addressing the problem of existing chains lacking protection or providing incomplete protection.