281 results about "Polytetrafluoroethylene" patented technology

The utility model discloses a zinc oxide collection system bottom discharge device relates to material conveying technical field, including the fixed installation in the bottom of the collecting system's material hopper's discharge chute, both ends of discharge chute are installed with end bearing assembly respectively, and the common installation of two end bearing assembly is the discharge axle, is fixed with spiral discharge vane on the discharge axle in discharge chute, at least one intermediate bearing seat is fixedly installed in discharge chute, and the bearing cylinder of polytetrafluoroethylene material is fixedly arranged on intermediate bearing seat, and the discharge axle passes bearing cylinder, and is equipped with the material pass -through of intermediate bearing seat. The utility model reduces structure abrasion, is favorable to reducing maintenance frequency and maintenance cost, and reduces iron impurity incorporation, is favorable to reducing magnetic separation processing cost.

This utility model discloses an elastic quick-drying athletic trousers, comprising a trouser body with four parts: waistband, crotch, hips, and legs. The trouser body uses a composite fabric structure, including an outer layer, a middle layer, and an inner layer. The outer layer is a high-count worsted wool and nylon blend fabric; the middle layer is a microporous breathable membrane made of polytetrafluoroethylene (PTFE); and the inner layer is a quick-drying fabric made of a polyester and spandex blend. A breathable mesh fabric, also made of polyester fiber, is sewn and stitched into the crotch area. This utility model utilizes a composite fabric, with the spandex in the inner layer providing excellent elasticity. The elastic waistband and three-dimensional tailoring design allow for free movement and a comfortable fit. The breathable mesh in the crotch and the quick-drying inner layer quickly wick away sweat, keeping the wearer dry and comfortable, effectively enhancing the wearing experience.

The utility model discloses a self -priming formula heating rare earth ore pulp hydrolysis decomposition device, including multistage series steel lining polytetrafluoroethylene reation kettle, multistage series steel lining polytetrafluoroethylene reation kettle includes the first stage steel lining polytetrafluoroethylene reation kettle, second stage steel lining polytetrafluoroethylene reation kettle and third stage steel lining polytetrafluoroethylene reation kettle that are connected in turn, first stage steel lining polytetrafluoroethylene reation kettle, second stage steel lining polytetrafluoroethylene reation kettle and third stage steel lining polytetrafluoroethylene reation kettle are installed slurry circulating heating subassembly respectively, first stage steel lining polytetrafluoroethylene reation kettle, second stage steel lining polytetrafluoroethylene reation kettle and third stage steel lining polytetrafluoroethylene reation kettle are installed double -deck stirring oar subassembly respectively. The utility model can realize that slurry is heated and continuously in -and -out material outside the reation kettle body, can realize the continuous overflow flow of slurry.

This invention discloses a NiAlEu-LDHs photocatalyst, its preparation method, and its application in catalytic CO2 synthesis of syngas, belonging to the field of catalyst preparation technology. The NiAlEu-LDHs photocatalyst is a europium-doped layered double hydroxide prepared by a hydrothermal reaction using nickel, aluminum, and europium sources, possessing a multi-level nanoflower-like structure assembled from nanosheets. The preparation method includes the following steps: a one-step hydrothermal method is used to dissolve the nickel, aluminum, and europium sources, along with urea and ammonium fluoride, in deionized water; the solution is then transferred to a polytetrafluoroethylene-lined autoclave for hydrothermal reaction. This invention introduces europium through a one-step hydrothermal method, constructing a europium-doped nanoflower-like NiAlEu-LDHs photocatalyst. In production applications, this invention's preparation method is simple and novel, with low synthesis cost, easy mass production, and significant application value.

This invention discloses the preparation and gas adsorption separation application of pyrazole-3,4,5-tricarboxylic acid ligand heteronuclear metal-organic framework materials, comprising the following steps: 1) Weighing CuCl2·2H2O, Ba(NO3)2, and 1H-pyrazole-3,4,5-tricarboxylic acid as raw materials; 2) Placing the raw materials in a polytetrafluoroethylene-lined reactor, adding distilled water, and adjusting the pH to 2-4 with malonic acid; 3) Sealing the reactor and heating the reaction, raising the temperature from room temperature to 80-120℃ over 0-12 hours, holding the temperature for 70-75 hours, and then lowering it to room temperature over another 0-12 hours; 4) Collecting the product, washing, and vacuum drying to obtain the chemical formula [Cu2Ba(HL)2(H2O)3]. n The crystal is a pyrazole-3,4,5-tricarboxylic acid. By combining the multi-site coordination advantages, heterometallic node construction advantages, and pore functionalization control advantages of pyrazole-3,4,5-tricarboxylic acid, a stable framework structure can be constructed while simultaneously adjusting pore size, optimizing pore wall polarity, and constructing local adsorption sites, thereby enhancing the material's application potential in SF6 capture and separation, and C2 gas adsorption and storage.

This invention belongs to the field of hollow fiber membrane preparation technology, and discloses a braided tube-reinforced polyvinylidene fluoride hollow fiber hydrophobic membrane, its preparation method, and its application. The polyvinylidene fluoride hollow fiber hydrophobic membrane includes a braided tube and a hydrophobic membrane layer formed on the surface of the braided tube. The outer diameter of the braided tube-reinforced polyvinylidene fluoride hollow fiber hydrophobic membrane is 0.3-3 mm, the tensile breaking strength is greater than 100 N, and the pure water permeability is 200-7500 L / (m²). 2 •h)@0.1MPa 20℃. The preparation method includes: preparing a casting solution by combining polyvinylidene fluoride resin, organic solvent, composite pore-forming agent, and optionally polytetrafluoroethylene microparticles; extruding the casting solution onto the outer surface of a braided tube using a hollow fiber membrane spinning machine, and forming a membrane through phase separation in a coagulation bath. This invention significantly improves the mechanical strength of the membrane through braided tube reinforcement and achieves high flux and high hydrophobicity using a water-inorganic-organic composite pore-forming agent, making it suitable for high-performance separation processes such as membrane distillation, membrane contactors, and gas separation.

The application provides a low-friction high-wear-resistance resin-based composite material and a preparation method and application thereof, and belongs to the field of composite materials. The polytetrafluoroethylene nano powder modified by radiation is used together with inorganic filler particles such as graphite nano powder, molybdenum disulfide nano powder and the like to prepare a polyphenylene sulfide-based composite material at a certain compounding ratio. The composite material shows excellent tribological properties. On this basis, by adding a chopped carbon fiber and the like as a reinforcing filler, a high-strength, low-friction high-wear-resistance polyphenylene sulfide-based composite material is prepared by using a multi-scale functional filler network structure constructed inside the composite material. The technical process route of the application is simple, and the manufacturing cost is low. The application can be used for preparing friction protection parts, low-friction wear-resistant structures, wear-resistant bearings, self-lubricating parts, mechanical gaskets and the like under dry friction, and has a very broad application prospect in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment.

This invention discloses a high-wear-resistant polytetrafluoroethylene (PTFE) membrane material and its preparation method, relating to the field of PTFE membrane material technology. The high-wear-resistant PTFE membrane material prepared by this invention includes PTFE, wear-resistant filler, lubricant, and composite surfactant. The composite surfactant is obtained by reacting maleic acid derivatives with polyethylene glycol derivatives. The maleic acid derivative is obtained by reacting hydroxyethyl methacrylate, styrene, silane coupling agent KH570, POE, and maleic anhydride. The polyethylene glycol derivative is obtained by reacting 4-imidazolium formaldehyde with mono-amino-terminated polyethylene glycol. This process improves wear resistance while giving the PTFE membrane anti-fouling properties. The wear-resistant filler is obtained by reacting brominated cyclohexylmethyl dimethoxysilane with nano-silica, followed by coating with a perfluoropolyether block copolymer. This process improves wear resistance while the introduced perfluoropolyether further enhances anti-fouling properties.

This utility model discloses a mixing device for producing environmentally friendly thermoplastic polyvinyl chloride (PVC), including a support frame mounted on a main body and a mixing chamber installed within the support frame. A geared motor is mounted on the side of the support frame at the top of the main body, and the output end of the geared motor is connected to the inside of the mixing chamber. A protective cover is mounted on the top of the mixing chamber, and a hydraulic device is mounted on the top of the protective cover. A sealing cap is mounted on the bottom of the protective cover. Through the designed sealing mechanism, the problem of the sealing material and size being incompatible with the working environment of the mixing chamber during the production of environmentally friendly thermoplastic polyvinyl chloride (PVC) is improved. This mismatch leads to aging and failure to achieve a sealing effect. The sealing mechanism uses polytetrafluoroethylene (PTFE) composite material for both the sealing gasket and the sealing sleeve, which is temperature-resistant, wear-resistant, and chemically resistant, matching the high-temperature and additive-containing environment of the mixing chamber. Furthermore, the sealing gasket can be disassembled and replaced as needed, increasing the flexibility of use.

This application relates to the technical field of polymer materials, specifically disclosing a polytetrafluoroethylene (PTFE) sealing component and its preparation process. The PTFE sealing component comprises the following raw materials: 80-85 parts PTFE powder, 5-6 parts graphite powder, 6-8 parts glass fiber, 5-6 parts chopped carbon fiber, 4-5 parts ceramic powder, 2-4 parts Y₂O₃@CeO₂ core-shell particles, and 1-3 parts molybdenum disulfide. The preparation process includes the following steps: mixing PTFE powder, graphite powder, ceramic powder, Y₂O₃@CeO₂ core-shell particles, and molybdenum disulfide, ball milling, and drying to obtain a composite powder; uniformly mixing glass fiber and chopped carbon fiber to obtain mixed fibers; alternately layering the mixed fibers and composite powder, with the fiber layer located between two composite powder layers; cold isostatic pressing to obtain a green body; and hot-pressing and sintering the green body, followed by argon plasma treatment to obtain the PTFE sealing component. This application helps reduce the performance degradation of PTFE sealing components under long-term high-temperature environments.

The application discloses a kind of perfluoropolyether nanocomposite grease and preparation method thereof, belong to the technical field of lubricating material.The lubricating grease includes perfluoropolyether base oil, polytetrafluoroethylene thickener and composite nano additive, wherein the composite nano additive is composed of surfactant modified antiwear additive, structure stabilizer, rust and oxidation inhibitor.Antiwear additive is one of nano copper, nano cerium oxide, nano titanium oxide and molybdenum sulfide, structure stabilizer is one of nano silicon oxide and porous alumina, and rust and oxidation inhibitor is nano zinc oxide.The composite nano additive is introduced in the form of perfluoropolyether oil phase dispersion, and is homogenized with thickener under the condition of 150~260℃ after dispersion and mixing.The application realizes the synchronous improvement of lubricating grease wear resistance, colloid stability, rust and oxidation resistance and oxidation stability through the synergistic effect of various nanomaterials, and is suitable for harsh working condition environment such as high temperature, high load, high vacuum and strong corrosion.

The application relates to the technical field of plastic pallets, and discloses a high-strength plastic pallet and a preparation method thereof, wherein the raw materials of the plastic pallet include the following components in parts by weight: 100 parts of polypropylene, 15-20 parts of cis-butadiene rubber, 1-3 parts of polytetrafluoroethylene, 1-3 parts of a compatilizer, 10-20 parts of a filler, 10-15 parts of glass fiber, 5-10 parts of a plasticizer, 1-2 parts of an antioxidant and 2-5 parts of a flame retardant; the raw materials of the filler include the following components in parts by weight: 100 parts of titanium dioxide and 7-10 parts of a modifier; the modifier is composed of a silane coupling agent and p-aminophenethyl alcohol. Through the technical scheme, the problem of insufficient strength of the plastic pallet in the related art is solved.

This invention belongs to the field of oil and gas well exploration and development technology, specifically relating to a high-temperature sealing thread grease for oil casing and its preparation method and application. The thread grease comprises the following components in parts by weight: 33-58 parts base grease, 10-40 parts magnetic fluid, 1-5 parts polyethylene glycol, 5-10 parts phosphate ester, 4-10 parts fumed silica, 3-18 parts graphite, 1-5 parts nano-molybdenum powder, 1-5 parts nano-copper powder, 6-12 parts zinc powder, 10-30 parts lead powder, 5-10 parts alkylphenol resin, 5-15 parts acrylic resin, 5-15 parts polytetrafluoroethylene, 10-18 parts diisocyanate, 10-18 parts polyurethane, 10-12 parts tetraethylene glycol dimethacrylate, and 6-11 parts nitrile rubber. This invention ensures good lubricity while maintaining excellent sealing performance under high-temperature conditions.

An electric diaphragm pump with a piston cylinder includes a pump body, a mechanical transmission, and a piston cylinder. The mechanical transmission includes a speed reduction motor and a piston transmission. The piston transmission includes a piston located in the piston cylinder. The piston cylinder includes a body, at least one set of heat dissipation ribs located on the outer wall of the body, a layer of anti-friction and corrosion layer located on the inner wall of the body, and an oil inlet assembly located on the outer wall of the body. The heat dissipation ribs include a plurality of heat dissipation fins uniformly spaced along the axial direction of the body to increase the heat dissipation area. The anti-friction and corrosion layer is made of polytetrafluoroethylene material, which can reduce the friction of the piston when reciprocating in the piston cylinder, thereby improving the working efficiency of the piston and reducing the wear of the piston and the piston cylinder. The oil inlet assembly is used to add lubricating oil to the piston cylinder to further reduce the friction of the piston cylinder and the piston.

This invention discloses a method for preparing a multifunctional graphite / iron powder / geotextile composite material, relating to multifunctional material technology. The preparation method includes the following steps: First, PU-2540 resin is stirred at 500 rpm for 10 minutes. Then, graphite, iron powder, and dispersant are added at 600 rpm over 4 hours. After the addition is complete, the stirring speed is increased to 800 rpm, and dispersion continues for 30 minutes. The prepared slurry is scraped onto geotextile, and then placed on a polytetrafluoroethylene film and allowed to stand at room temperature for 16 hours. After standing, the material is clamped on both sides into a stainless steel hot press mold and placed in the center of the lower platen of the hot press. The hot press is started, a certain pressure is applied and maintained constant, and then the upper and lower plates are heated simultaneously, and hot pressing is performed under this pressure and temperature. This invention achieves multifunctional integration of wave absorption, electrothermal properties, corrosion resistance, and UV protection, providing a lightweight and flexible integrated protective material solution for offshore wind turbine towers.

The utility model discloses an extruder for polytetrafluoroethylene-based composite material production, and relates to the technical field of composite material production, the extruder comprises a shell, an extrusion mechanism is arranged in the shell, a heating mechanism is arranged in the shell, the extrusion mechanism comprises a groove, the inner wall of the groove is fixedly connected with a sliding chute, and the sliding chute is connected with the heating mechanism. Through the arrangement of the moving plate, the first bolt can be screwed out, then the moving plate slides in the sliding groove, so that other molds are aligned with the material extruding barrel, then the first bolt is screwed in the moving plate to fix the position of the moving plate, then the motor is started, the motor enables the rotating shaft to rotate at the moment, and the rotating shaft is rotated. And then the rotating shaft drives the first gear to rotate, and through the moving plate capable of sliding in the sliding groove, the effects that materials of different shapes can be extruded according to specific requirements, extruded products of different shapes can directly meet the final application requirements, the later machining steps are reduced or avoided, and therefore the production efficiency is improved are achieved.

This utility model provides a water baffle ring for a multi-stage centrifugal pump, relating to the technical field of centrifugal pump water baffle rings. It includes a rotating shaft and an installation mechanism. A sealing ring is fitted onto the outer side of the rotating shaft, and an inner ring is fixedly connected to one side of the sealing ring. A connecting groove is formed between the sealing ring and the inner ring. A connecting block is connected to the inner side of the connecting groove via a threaded connection. An installation mechanism is fixedly connected to one side of the connecting block. A rotating block is mounted on the rotating shaft via two installation blocks. A first installation layer seals the contact surface between the rotating block and the rotating shaft. The sealing ring completes the seal between the installation block and the rotating shaft. The rotating block, made of polytetrafluoroethylene, combined with the two installation blocks to form a double-layer structure provides an elastic seal, adapting to the vibration and thermal expansion of the pump shaft. This device, through multi-layer sealing, has good water-blocking performance, preventing liquid from passing through the gaps in the rotating shaft during operation and avoiding damage to the machine. Simultaneously, it adapts to the vibration and thermal expansion of the pump shaft, resulting in low wear and a long service life.

The application relates to the cable field and particularly discloses a mine rubber-sheathed cable insulation shielding material and a preparation method thereof. The insulation shielding material comprises the following raw materials in parts by weight: chlorinated polyethylene 100 parts; conductive carbon black 37-40 parts; graphene 1-2 parts; flake graphite powder 3-6 parts; plasticizer 25-30 parts; light magnesium oxide 6-10 parts; calcium stearate 1-2 parts; antioxidant 1-2 parts; calcium hydroxide 3-5 parts; vulcanization cross-linking system 7-9 parts; polyethylene wax 1-2 parts; peeling regulation component, which comprises 3-4 parts of polytetrafluoroethylene superfine powder, 2.5-3.5 parts of shellac and 1.5-2.5 parts of fluorosilicone oil. The preparation method comprises the following steps: raw material pretreatment; and sectional temperature control mixing. The insulation shielding material has the advantages of excellent processing technology, conductive performance and stable controllable peelable interface between the insulation shielding material and the ethylene-propylene insulation layer.

This invention discloses a temperature-controlled sustained-release amino acid chitosan drug carrier, its preparation method, and its application, belonging to the field of biomedical materials technology. The preparation method includes the following steps: dissolving chitosan in a first organic acid solution to obtain a chitosan solution; adding butanetetracarboxylic acid and sodium hypophosphite to the chitosan solution, adjusting the solution to a set pH value, and reacting to obtain a reaction solution; precipitating the reaction solution with ethanol, then filtering, washing with deionized water until neutral, and vacuum drying to obtain modified chitosan; dispersing the modified chitosan in deionized water, adding amino acids, adjusting the pH to acidic, adding a crosslinking agent, and stirring the reaction at room temperature to obtain a crosslinking reaction solution; sequentially dialyzing and freeze-drying the crosslinking reaction solution to obtain a complex; mixing the complex with water to prepare an aqueous solution, pouring it into a polytetrafluoroethylene mold for room temperature drying to form a nascent film; immersing the nascent film in a second organic acid solution, then sequentially rinsing with deionized water overnight, and air-drying at room temperature to obtain the temperature-controlled sustained-release amino acid chitosan drug carrier. This is used to solve technical problems such as poor mechanical properties of chitosan and uncontrollable load release mechanism.

This invention discloses a method for preparing and applying a high-efficiency fixed-wavelength reflective film for silicon-based power generation in the field of photovoltaic power generation enhancement materials. The method involves mixing and extruding a functional masterbatch made from cerium-yttrium modified magnesium fluoride-coated barium sulfate microspheres, cerium-zirconium modified rutile titanium-silicon composite microspheres, rutile titanium dioxide, precipitated barium sulfate, hollow glass microspheres, light calcium carbonate, maleic anhydride-grafted polyethylene, and high-density polyethylene resin. This masterbatch is then co-extruded and blow-molded with low-density polyethylene, ethylene-octene copolymer, silicone masterbatch, polytetrafluoroethylene, antioxidants, UV absorbers, light stabilizers, calcined kaolin, and oxidized polyethylene wax to form a film. The film is then embossed, corona-treated, and wound to obtain the final product. This reflective film exhibits high diffuse reflectance, weather resistance, wear resistance, and anti-aging properties, and can be used in medium to large-scale photovoltaic power plants to improve the power generation efficiency of silicon-based photovoltaic modules.

The application discloses a kind of ultra-wear-resistant high molecular sliding materials ZMSM, belong to high polymer composite material and structural bearing technical field;The sliding material is made by ultra-high molecular polyethylene and a variety of functional additives by blending, forming process;The additive includes one or more of glass bead / glass fiber, carbon fiber, graphite, carbon black, coupling agent, stabilizer, lubricant, anti-wear agent, anti-aging agent and anti-chemical corrosion agent;The material of the application has excellent sliding characteristics, high allowable pressure, wide temperature range adaptability, very low friction coefficient and ultra-long service life, especially suitable for high-speed, high-load, wide-temperature-range working conditions under structural bearing, sliding plate, support and other fields.Compared with traditional polytetrafluoroethylene sliding material, the allowable pressure of the material of the application is increased by 2 times, the cumulative sliding displacement life is increased by more than 5 times, the applicable temperature range is expanded to-50°C~+70°C, and the wear rate is significantly reduced under high-speed motion conditions;The application also discloses the preparation process of the material, and the process is simple and easy to industrial production.

A method for preparing a variable stiffness flexible composite material tube and its application belong to the field of engineering composite material preparation. The method involves mixing a UV curing agent, an imidazole derivative curing agent, acrylate resin, and epoxy resin, followed by vacuuming to remove air bubbles, then compounding with carbon fiber cloth. Using a polytetrafluoroethylene rod mold, the mixture is irradiated with ultraviolet light for 8-12 minutes, followed by pre-curing at 110-130℃ for 2.5-3.5 hours, and then curing at 140-160℃ for 2.5-3.5 hours to obtain a rigid material. This invention, through molecular synthesis design, prepares imidazole derivatives with higher molecular weights, improving the shelf life of the flexible material and thus significantly increasing the workability. The prepared imidazole derivatives are in a liquid state, greatly improving compatibility with the resin system. Through molecular synthesis design, the prepared imidazole derivatives can undergo a Michael reverse reaction at 120℃, releasing 2-ethyl-4-methylimidazolium, thereby achieving reaction polymerization at a lower temperature and improving application efficiency.

A fluororesin tube having tearing property in a lengthwise direction, the fluororesin tube being formed of one thermoplastic fluororesin different from polytetrafluoroethylene and having an inner diameter heat shrinkage ratio of 20% or more when heated in a gas phase at 200° C. for 5 minutes. A method for producing a fluororesin tube having tearing property, the method including a step of subjecting one thermoplastic fluororesin different from polytetrafluoroethylene to melt extrusion molding, wherein the fluororesin tube has an inner diameter heat shrinkage ratio of 20% or more when heated in a gas phase at 200° C. for 5 minutes, and wherein in the melt extrusion molding, a flow path of the molten thermoplastic fluororesin is temporarily branched to form a weld line in a lengthwise direction in the fluororesin tube.

The application relates to the technical field of high polymer composite materials, in particular to a modified polytetrafluoroethylene material and a preparation method thereof, the method comprises the following steps of S1, respectively preparing graphene-coated topological insulator powder, fluorine-containing surfactant modified liquid metal microdroplets and bifunctionalized fullerene, S2, mixing the three to prepare a pre-composite powder, S3, mixing with PTFE resin and then cold pressing to form, and S4, performing gradient sintering densification under a protective atmosphere, wherein the temperature rising rate is controlled to be less than or equal to 2 DEG C / min in a key temperature range of 250 DEG C to 340 DEG C, the application successfully solves the problems of multi-phase interface compatibility and high-temperature protection of functional components through unique component design and interface regulation and a gradient sintering process suitable for heat-sensitive components, and the application has the advantages of super-low friction coefficient, extremely high wear resistance, adjustable volume resistivity, significantly improved thermal conductivity and mechanical strength and excellent photo-thermal conversion efficiency.

The application discloses a high-sealing polytetrafluoroethylene filter element and relates to the field of filter elements.The high-sealing polytetrafluoroethylene filter element comprises a supporting framework one, a supporting framework two is fixed to the inner wall of the supporting framework one, a connecting pipe is fixed to one end of the supporting framework one, an end head is arranged at the end of the supporting framework one away from the connecting pipe, a stable abutting mechanism is arranged between the supporting framework one and the end head, and a reinforcing mechanism is arranged at the end of the supporting framework one close to the connecting pipe.The end head of the supporting framework one abuts against the bottom of the shell to complete the installation of the filter element;when the end head abuts against the bottom of the shell, the shell extrudes the end head, the end head extrudes the stable abutting mechanism, the stable abutting mechanism abuts against the inner wall of the shell, the stability of the supporting framework one is improved, the supporting framework one is prevented from deviating due to excessive water pressure, the connecting pipe on the supporting framework one is prevented from deviating at the connecting position, and the possibility that water flow enters the shell without being filtered is reduced.

This invention provides a porous transparent Ga2O3 nanoceramic material and its preparation method. 0.5 g of Ga(NO3)3·9H2O was poured into 15 ml of anhydrous ethanol and stirred until a clear precursor solution was formed. This solution was then transferred to a polytetrafluoroethylene (PTFE) liner, and a solvothermal synthesis reactor was assembled and placed in a constant-temperature drying oven at 180 °C for 15 h. After the reaction, the reactor liner was opened, revealing a gel-like product. This product was washed three times with anhydrous ethanol by centrifugation, resulting in a white gel-like product. It was then dried in a constant-temperature drying oven at 80 °C for 10 h. The dried precursor was then placed in a muffle furnace and calcined at 500 °C for 5 h. The resulting ceramic material exhibited a maximum transparency of 79.64%. This invention yields a porous, transparent Ga2O3 nanoceramic material under normal pressure. The material is sintered from γ-Ga2O3 nanoparticles, exhibiting an irregular, near-spherical morphology with an average particle size of 5.86 nm. The nanoparticles form a nanoporous structure with pore diameters ranging from approximately 2 to 20 nm, showing a significant peak at 4.74 nm. The specific surface area is 159.3 m². 2 / g.

This utility model discloses an adjustable guide ring with corrosion resistance, relating to the field of fishing tackle technology. It includes a fixed ring with a rotating ring rotatably connected to it. The fixed ring has a clamping mechanism for fixing the fixed ring to a fishing rod. The rotating ring has a transmission component that drives the clamping mechanism and a limiting component to prevent rotation. By setting up the fixed ring, rotating ring, clamping mechanism, and transmission component, when the rotating ring is rotated, the arc-shaped guide groove and the limiting rod cooperate to drive the slider to slide within the groove, causing the clamping plate to move synchronously. This achieves clamping and fixing of fishing rods of different thicknesses without the need to replace the guide ring, making operation convenient and reducing operating costs. The spring, connecting rod, and guide eye ring are made of stainless steel and coated with a polytetrafluoroethylene anti-corrosion coating, enhancing the corrosion resistance of the guide ring, extending its service life, and making it suitable for use in complex environments such as wading.

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 utility model relates to a kind of high-pressure visual loop heat pipe condensers in loop heat pipe heat dissipation technical field, including bottom plate, glass plate, polytetrafluoroethylene gasket, stainless steel gasket, elastic pad, bolt, bolt hole sealing ring, outer ring sealing ring, flow passage sealing ring, import pipe and export pipe.The utility model is in bottom plate and is opened out serpentine flow channel groove and the sealing groove of surrounding flow channel, using the thicker glass plate of equal size with condenser, utilize bolt fixed glass plate and bottom plate, and using sealing ring sealing flow channel around prevents working medium leakage.The condenser of the utility model has high-pressure characteristic and vapor-liquid two-phase full domain visual monitoring capability, while maintaining high-efficiency heat dissipation and structural stability, and has important value to improve the design precision of loop heat pipe, fault diagnosis capability and dynamic control level.

The application relates to the technical field of automobile part molds, and discloses an automobile part mold guide column, which comprises a lower mold and an upper mold, wherein the upper mold is located above the lower mold. The automobile part mold guide column is provided with a soft sleeve outside the ball guide column, can play a buffering and isolating role when the mold and the ball guide column relatively move, and the soft sleeve made of polytetrafluoroethylene has very low friction coefficient and good self-lubricating property. When the guide hole of the mold is in contact with the ball guide column and relatively slides, the soft sleeve first contacts the inner wall of the guide hole, the soft and smooth surface of the soft sleeve can effectively reduce the direct friction force between the two, the surface material of the ball guide column or the guide hole of the mold is prevented from being scraped and worn due to high-intensity friction, meanwhile, the soft sleeve can also fill the possible tiny gap between the ball guide column and the guide hole, the movement is more stable, the additional friction and wear caused by shaking and impact are reduced, and the pulling phenomenon of the ball guide column and the mold is avoided.