19 results about "Tungsten disulfide" patented technology

This invention discloses a SnS / WS2@C composite electrode material, its preparation method, and its application, belonging to the field of tungsten disulfide nanomaterials technology. A precursor solution A is obtained by uniformly dispersing SnCl2·2H2O and CH3CSNH2 in anhydrous ethanol. After a solvothermal reaction, precursor solution A is cooled, centrifuged, washed, and freeze-dried to obtain powder B. Powder B, WCl6, and CH3CSNH2 are uniformly dispersed in anhydrous ethanol to obtain solution C. After a solvothermal reaction, solution C is cooled, centrifuged, washed, and freeze-dried to obtain powder D. Powder D is uniformly dispersed with glucose in deionized water to obtain precursor solution E. After a solvothermal reaction, precursor solution E is cooled, centrifuged, washed, and freeze-dried to obtain powder F. Powder F is calcined at high temperature to obtain the SnS / WS2@C composite electrode material. Performance testing of the prepared SnS / WS2@C composite electrode material revealed that it exhibits good electrochemical performance when used as a negative electrode in potassium-ion batteries.

The invention relates to a method for manufacturing a component (1) comprising a metallic base body (2) with at least one coating (3) arranged at least partially on it, comprising the following steps: - Providing a metal strip (2a), - Providing at least one coating bath (5, 5') and at least partially passing the sheet metal strip (2a) through the at least one coating bath (5, 5'), wherein the sheet metal strip (2a) is electroplated, - wherein the coating (3) is formed by optionally forming a first layer (3a) of nickel on the sheet strip (2a), and by forming at least one second layer (3b) of a tin-nickel alloy in which particles (4) in the form of graphite and / or molybdenum disulfide and / or tungsten disulfide and / or polytetrafluoroethylene are incorporated, directly on the sheet strip (2a) and / or on the optional first layer (3a), and - Forming a coated area of ​​the sheet metal strip (2a) by means of a deep drawing process, whereby the component (1) is simultaneously or subsequently cut out of the sheet metal strip (2a).

The application discloses a quasi-solid-state sodium battery electrolyte and a preparation method and application thereof, and belongs to the technical field of sodium metal batteries. The quasi-solid-state sodium battery electrolyte provided by the application comprises a photocuring agent, a sodium ion electrolyte and a two-dimensional material; the two-dimensional material comprises one or more of fluorinated graphene, titanium nitride, boron nitride, silicon disulfide, tungsten disulfide and silicon carbide. The quasi-solid-state sodium battery electrolyte provided by the application has good mechanical strength and mechanical stability, can reduce the resistance of the quasi-solid-state sodium battery electrolyte, and improve the ionic conductivity; when the quasi-solid-state sodium battery electrolyte is applied to a sodium metal battery, the sodium metal battery has higher specific capacity under small and large rates, and can maintain long-time cycle stability.

The present disclosure provides a modified positive electrode material and a preparation method and application thereof, the preparation method comprising the following steps: (1) mixing tungsten disulfide with a tannic acid solution, performing ultrasonic treatment, and then separating to obtain a TA-WS2 nanosheet solution; (2) mixing a positive electrode material with a solvent after performing corona discharge treatment, to obtain a positive electrode material solution, mixing the positive electrode material solution with the TA-WS2 nanosheet solution, and obtaining a mixed solution; (3) performing solid-liquid separation treatment on the mixed solution, and performing calcination treatment on the obtained solid material, to obtain the modified positive electrode material. The present disclosure prepares nanoparticles with strong electronegativity, simultaneously charges the positive electrode material particles, utilizes the interaction force between the strong electronegativity and electrons, makes the nanoparticles with strong electronegativity uniformly and spontaneously loaded on the charged particles, and finally forms a uniform coating layer on the surface of the positive electrode material through calcination.

This invention relates to the field of polymer composite materials technology, specifically to a high wear-resistant cable material based on carbon fiber reinforcement and its preparation method. The material comprises the following raw materials in parts by weight: 40-60 parts impact-resistant copolymer polypropylene, 15-20 parts carbon fiber, 8-15 parts additive A, 8-12 parts additive B, 4-6 parts plasticizer, and 1.5-2 parts antioxidant. In this invention, additive A, through a carbon sphere precursor and modified bismuth selenide, constructs a reinforced wear-resistant structure, inhibiting interfacial debonding and particle shedding during friction, while simultaneously improving the overall rigidity and scratch resistance of the material. This structurally enhances the wear life and mechanical stability of the cable material. Additive B, prepared by combining tungsten disulfide and polyvinylidene fluoride-hexafluoropropylene copolymer-based additives, forms a self-lubricating wear-resistant network, improving the wear resistance, aging resistance, and dimensional stability of the cable material under dynamic friction and complex working conditions.

This invention relates to the field of sliding materials for seismic isolation bearings, specifically disclosing a self-lubricating wear-resistant composite material for building seismic isolation bearings and its preparation method. The self-lubricating wear-resistant composite material for building seismic isolation bearings comprises the following raw material components: aliphatic polyketone, polytetrafluoroethylene, high-styrene resin modified methyl vinyl silicone rubber, silicone resin, solid lubricating particles, silicone oil, compatibilizer, antioxidant, stabilizer, and coupling agent; the raw material components of the solid lubricating particles include tungsten disulfide and hexagonal boron nitride. The self-lubricating wear-resistant composite material for building seismic isolation bearings prepared by this invention can maintain a low and stable coefficient of friction and excellent wear resistance over a long period, significantly reducing dependence on external lubricating grease, and solving the technical problems of rapid decay of self-lubricating performance, frequent maintenance, and high cost of existing bearing materials.

This application provides a flexible nitrogen dioxide gas sensor based on tungsten disulfide and its fabrication method. The sensor includes a flexible substrate, a flexible electrode, and a tungsten disulfide sensitive film. The flexible electrode is disposed on the same plane of the flexible substrate, and the source and drain adopt an arrayed interdigitated electrode structure. The tungsten disulfide sensitive film covers the channel region between the source and drain, and there is a gap between it and the gate. When a gate voltage is applied, the gate modulates the carrier concentration in the tungsten disulfide channel of the tungsten disulfide sensitive film through a lateral electric field, thereby adjusting the sensitivity to nitrogen dioxide detection. The fabrication process is simplified, and high sensitivity, fast recovery, and flexible wearable adaptation are achieved simultaneously without material modification or external assistance.

This invention relates to the field of rubber technology, specifically to a rubber sealing strip and its preparation method. The rubber sealing strip, by weight, comprises the following components: 50-70 parts EPDM rubber, 30-50 parts nitrile rubber, 15-25 parts core-shell composite filler, 5-10 parts carbon black, 3-8 parts modified boron nitride nanosheets, 1.5-3 parts peroxide vulcanizing agent, 1-2 parts co-crosslinking agent, 1-2 parts antioxidant, and 1-3 parts lubricant; wherein the core-shell composite filler is a composite material with porous nano-silica as the core, an organosiloxane network, and embedded nano-tungsten disulfide as the shell. The rubber sealing strip provided by this invention solves the problems of insufficient mechanical properties, wear resistance, and thermal stability, as well as poor filler dispersion in traditional rubber sealing strips; it improves the tensile strength, wear resistance, and heat aging resistance of the rubber.

The application discloses a preparation method and application of a silicone gel modified tungsten disulfide insulating composite material for high-voltage and high-power power electronic device packaging, and proposes that tungsten disulfide is modified by Tris and a silane coupling agent to prepare an organic silicone gel composite insulating material; the method effectively improves the interface compatibility of inorganic fillers and an organic silicone matrix, solves the problem of easy agglomeration of tungsten disulfide nanomaterials, realizes uniform dispersion of the tungsten disulfide nanomaterials in the gel, and has the advantages of simple process, mild conditions and facilitation of large-scale production since the preparation process only needs normal-temperature ultrasonic, magnetic stirring, centrifugal washing and vacuum drying; the introduction of tungsten disulfide regulates the trap energy level distribution and improves the electric field distribution and heat dissipation by using the heat conduction characteristics of the tungsten disulfide; and the results show that the breakdown field strength is increased by 20.4%, the thermal weight loss T5% reaches 377 DEG C, the initial voltage of partial discharge is increased by 48.5%, and the comprehensive performance meets the requirements of new-generation high-voltage and high-power power electronic device packaging.

The application discloses a kind of triangular sheet LaCO3OH reinforced benzoxazine resin-based composite friction material and preparation method and application thereof, belong to the technical field of friction material.The material includes 20%30% organic binder, 20% fiber reinforced phase and 50%60% inorganic filler by weight percentage;Organic binder is benzoxazine resin;Inorganic filler is calcium sulfate, barium sulfate, alumina, calcium carbonate, zirconium oxide, chromite, diamond powder, silicon dioxide, graphite, molybdenum disulfide, tungsten disulfide, diatomite, vermiculite, kaolin, carbon black one or more, and contains at least 5% triangular sheet LaCO3OH;Triangular sheet LaCO3OH presents regular triangular sheet morphology, sheet edge is straight, surface is smooth, side length is 6~7 μm, by embedding and mechanical interlocking effect of triangular sheet LaCO3OH filler in friction interface, the continuous dense friction film structure is constructed, to realize the stable regulation and control of friction interface, and the friction material has high compressive strength and excellent friction and wear performance.

This invention discloses an environmentally friendly friction material for high-altitude railways that is resistant to aging and heat fading, and its preparation method. It relates to the field of railway vehicle braking materials and is composed of the following components by weight percentage: modified phenolic resin 7.7%~11.7%, hydrogenated nitrile butadiene rubber 14.4%~16.6%, aluminum dihydrogen phosphate 7.7%~11.0%, basalt fiber 12.1%~14.4%, tungsten disulfide 2.7%~3.3%, zirconium silicate 3.8%~5.1%, flake graphite 9.3%~10.8%, barium sulfate 27.6%~33.1%, potassium feldspar powder 3.8%~5.1%; and accelerators CZ, zinc oxide, stearic acid, and sulfur, each accounting for 8% of the weight of the hydrogenated nitrile butadiene rubber; the sum of the weight percentages of the modified phenolic resin to the potassium feldspar powder is 100%. This invention uses hydrogenated nitrile butadiene rubber (HNBR) as a toughening component, which has an extremely low double bond content in its molecular chain.

The application belongs to the field of preparation of tungsten disulfide coating, and particularly relates to a wide temperature range tungsten disulfide lubricating coating and a preparation method thereof. The preparation method of the tungsten disulfide lubricating coating comprises the following steps: using a magnetron sputtering technology, first sputtering a Cr transition layer on a metal substrate to be treated, then turning on a WS2 target radio frequency power supply and a Cu target direct current power supply, adjusting the sputtering power of the WS2 target to 150-190 W, and adjusting the sputtering power of the Cu target to 10-25 W, and co-sputtering to obtain a WS2-Cu composite layer with WS2-Cu particles dispersed on the surface of the coating. The WS2-Cu composite coating is prepared by using a non-equilibrium magnetron sputtering technology, and by adjusting and controlling the coating process parameters, the WS2-based composite coating with excellent bearing performance and good wide temperature range lubricating performance is obtained. Tribological test shows that the WS2-Cu composite coating obtained by using the method exhibits a relatively low friction coefficient at room temperature, 100 DEG C and 400 DEG C.

This invention provides a core-shell structured borate extreme pressure agent, a wide-temperature-range industrial grease, and their applications. The extreme pressure agent possesses a unique core-shell structure, with tungsten disulfide as the core providing basic layered shear lubrication and nano-lanthanum borate as the outer shell. At high temperatures, it releases active boron atoms that react with the metal matrix to form a ceramic repair layer, thus achieving sequential and functional synergy of lubrication and repair on a single additive particle. The wide-temperature-range industrial grease prepared based on this extreme pressure agent exhibits excellent low-temperature start-up performance, high-temperature stability, and extreme pressure anti-wear properties, making it particularly suitable for extreme operating conditions such as wind turbine gearboxes and heavy-duty rolling mills. This invention further provides an intelligent lubrication system and application method incorporating this grease. Through condition monitoring and high-pressure precision grease injection, it enables online repair and predictive maintenance of wear on transmission components, significantly improving equipment reliability and service life.

This invention discloses a semiconductor device structure design method with high absorption rate in visible light, mainly comprising: a basic structure composed of film layers (1) to (4). Film layer (1) is located at the top of the structure and is the incident surface of visible light; film layer (4) is located at the bottom of the structure. The positional order and thickness of the four materials in the structure will change. The thickness of each film layer is between 1 nanometer and 20 micrometers. This invention is a four-layer thin film structure composed of tungsten disulfide, molybdenum disulfide, silicon dioxide, and silicon stacked together. The absorption characteristics of this structure can be changed by doping the materials or applying voltage. It consumes less material, is low in cost, easy to prepare, has stable performance, is convenient to use, avoids the use of metal materials, and has novelty, inventiveness, and practicality.

The invention relates to a method for producing a component (1), comprising a metal main body (2) having at least one coating (3) arranged thereon at least in some regions, the method having the following steps: - providing a sheet-metal strip (2a), - providing at least one coating bath (5, 5') and at least partially guiding the sheet-metal strip (2a) through the at least one coating bath (5, 5'), wherein the sheet-metal strip (2a) is galvanically coated, - wherein the coating (3) is formed in that optionally a first layer (3a) of nickel is formed on the sheet-metal strip (2a), and in that at least a second layer (3b) of a tin-nickel alloy, in which particles (4) in the form of graphite and / or molybdenum disulphide and / or tungsten disulphide and / or polytetrafluoroethylene are incorporated, is formed directly on the sheet-metal strip (2a) and / or on the optional first layer (3a), and - shaping a coated region of the sheet-metal strip (2a) by means of a deep-drawing method, wherein the component (1) is separated from the sheet-metal strip (2a) at the same time or subsequently.

The application discloses a preparation method of "peeling pomelo" shaped tungsten disulfide microspheres, and belongs to the technical field of inorganic materials. First, a phenoxyl tungsten complex is obtained by reacting tungsten hexachloride with a phenolic ligand under anhydrous and oxygen-free conditions; meanwhile, nanocrystals are obtained by dissolving thioacetamide in anhydrous ethanol, heating and dissolving, and naturally cooling; then, the phenoxyl tungsten complex solution is added dropwise into the thioacetamide nanocrystals, the mixture is uniformly transferred into a hydrothermal reaction kettle, hydrothermal reaction is carried out at 180-270 DEG C for 24-48h, and after washing and drying, the "peeling pomelo" shaped tungsten disulfide microspheres are obtained. The tungsten disulfide microspheres prepared by the method have a unique "peeling pomelo" shape, high specific surface area, rich pores, in-situ curling of nanosheets, stable structure formed by edge-to-edge and edge-to-face lapping, clean surface without residues, fully exposed active sites, and are suitable for being used in the fields of catalysis, energy storage and lubrication.

The application relates to the technical field of lubricating oil, in particular to high-temperature wheel belt lubricating oil and a preparation method thereof.The raw materials of the high-temperature wheel belt lubricating oil include the following components in parts by mass: poly-alpha-olefin 60-100 parts, nano-molybdenum disulfide 5-15 parts, dopamine hydrochloride 1-4 parts, oleylamine treated graphene 1-3 parts, polyhydric alcohol high-viscosity composite ester 5-15 parts, metal soap 10-20 parts, tungsten disulfide 1-2 parts, combustion-resistant agent 1-2 parts, antioxidant 1-2 parts and antifoaming agent 0.1-0.5 parts.The high-temperature wheel belt lubricating oil can maintain stable lubricating performance under extreme working conditions such as high temperature and high load, the raw materials are reasonably matched, the preparation method is simple, the lubricating oil is convenient to use, the application range is wide, and the lubricating oil is suitable for large-scale popularization and application.

The present application relates to a kind of three-dimensional nanoflower composite gas sensitive material and its preparation method and application, belong to gas sensitive material technical field.To solve the problem that there is no accurate, fast, low-cost low-concentration nitrogen dioxide detection method in the field of environmental monitoring, the present application obtains composite gas sensitive material with three-dimensional nanoflower structure by heating treatment of tungsten disulfide precursor and selenium powder.The present application realizes the regulation of three-dimensional nanoflower morphology by selenium doping, improves the sensitivity of gas sensitive material by improving the contact probability between active sites of gas sensitive material and NO2 gas molecules, and shortens the response time.Gas sensitive element is prepared using the gas sensitive material provided by the present application, which is used for NO2 gas detection at room temperature, and the sensitivity for 0.03ppm NO2 gas is 1.3, the response time is 10.7 seconds, which can realize accurate and rapid detection of low-concentration NO2 gas below 0.1ppm, and has important application prospect in the field of NO2 gas detection.