10results about How to "Component distribution is even" patented technology

The application belongs to the technical field of brush materials, and provides a silver graphite brush material and a preparation method thereof.The raw materials of the silver graphite brush material include flake graphite particles, silver powder and nano silicon powder.The silver graphite brush material breaks the technical limitations of traditional resin bonding systems and homogeneous structures, can take into account the advantages of original wear resistance, high temperature resistance and long service life, and can also solve the industry difficulties of poor assembly welding reliability of small brushes and high environmental protection cost.The preparation method can realize synchronous improvement of micro interfaces and macro structures, and the process is stable, controllable and industrialized batch production.

This invention discloses a geared motor with automatic lubrication function and its manufacturing method, belonging to the technical field of transmission devices. The motor includes a motor body, comprising a head and a tail section, with a stator assembly and a rotor assembly housed within the motor body's internal cavity; a gearbox containing a gear set, with a first bearing hole on the end face of the gearbox, into which a first bearing is installed; and an oil injection assembly located at the end of the gearbox for injecting oil into the first bearing hole. The oil injection assembly includes a fixed disc with a mounting housing on it. An oil groove is formed at the bottom of the mounting housing, and an oil injection disc is rotatably mounted within the mounting housing. This invention effectively prevents oil separation in the oil reservoir, allowing the automatic lubricant adding device installed on the geared motor to store a large amount of oil, eliminating the need for frequent replenishment of lubricant to the reservoir.

This invention provides a composite anode material, its preparation method, and its application. The preparation method includes the following steps: mixing and lithiating graphene material and lithium metal material in a protective atmosphere to obtain lithiated graphene material; wherein both the graphene material and the lithium metal material are in particulate form; mixing the metal material and the lithiated graphene material and heating to obtain the composite anode material. The composite anode material obtained by the preparation method of this invention is a lithium alloyed graphene material, which can guide the uniform deposition of metallic lithium, reduce the probability of lithium dendrite formation, and provide more electron pathways, enhancing lithium diffusion, thereby reducing the gap between the anode material and the solid electrolyte, reducing battery impedance, and improving battery cycle performance and rate performance.

The application discloses a composite system for enhancing corrosion resistance of high-entropy alloy and a use method thereof, and relates to the technical field of high-entropy alloy processing. The heat treatment device, the oxidation treatment device and the laser cleaning treatment device are connected with the control panel respectively, so that the temperature, oxidation and laser action of the high-entropy alloy in the processing process can be effectively controlled; the heat field action can accelerate the diffusion of high-entropy alloy elements to obtain more uniform component distribution; the oxidation can quickly generate an oxide protective film on the surface of the high-entropy alloy to isolate corrosion; and the laser cleaning can adjust the surface and interface structure of the high-entropy alloy and help to eliminate surface and internal defects. Through the heat field action, the oxidation and the laser action, the synergistic effect among processes, the corrosion resistance of the high-entropy alloy can be significantly improved, the three-dimensional and comprehensive improvement of the corrosion resistance is realized, and the high-entropy alloy has a wider application space and application value.

The invention discloses a preparation method of a polyvinylidene fluoride based composite material of a magnetic drive pump key component, and relates to the technical field of polymer composites.The preparation method comprises the specific steps of raw material modification treatment, component premixing, melt blending extrusion, mold pressing cooling forming and plasma aftertreatment. The PVDF resin is subjected to graft modification, the carbon fibers are sequentially subjected to oxidation and silane coupling agent dipping treatment, and the filler with the specific function is matched and premixed, so that bonding of adaptive interfaces of a matrix, a reinforced phase and the functional filler is promoted, and it is guaranteed that components are uniformly distributed and consistent with the internal structure; a compact structure is formed through melt blending, gradient pressure mold pressing and segmented cooling forming, and the surface state is optimized in combination with plasma aftertreatment, so that the material adapts to the stress requirement of key components of the magnetic drive pump and resists severe working conditions, performance fluctuation caused by environmental factors is reduced, and long-term stable operation of the components is guaranteed.

This invention discloses an ultra-high performance concrete material for bridge structures, its preparation method, and its applications, particularly relating to the field of concrete. The ultra-high performance concrete material for bridge structures of this invention comprises the following raw materials in parts by weight: 230-240 parts cement, 140-150 parts fly ash, 50-60 parts silica fume, 250-260 parts fine aggregate, 50-60 parts coarse aggregate, 5-9 parts water-reducing agent, 80-90 parts steel fiber, 0.03-0.08 parts modified graphene, 3-5 parts expansion agent, 1-3 parts viscosity modifier, and 70-80 parts water. The ultra-high performance concrete material for bridge structures prepared by this invention not only improves the viscosity of ultra-high performance concrete but also simultaneously enhances its compressive strength, flexural strength, and tensile strength, expanding its application prospects in bridge concrete.

This invention relates to the technical field of composite material preparation, specifically to a method for preparing a functional masterbatch of polycarbonate with arrayed carbon nanotubes and the resulting composite material. The method for preparing the functional masterbatch of polycarbonate with arrayed carbon nanotubes includes the following steps: heating a high-speed mixer to 90-100°C, adding arrayed carbon nanotubes, a silane coupling agent, and a lubricant to the high-speed mixer and mixing uniformly to obtain a premix; adding the premix, polycarbonate, a dispersant, and an antioxidant to a Banbury mixer and mixing to obtain a uniform semi-molten material; forcibly feeding the semi-molten material into a twin-screw extruder using a twin-cone feeder, and after mixing, shearing, and extrusion in the twin-screw extruder, discharging it into a single-screw extruder; after homogenization again in the single-screw extruder, extruding and granulating. This preparation method uniformly disperses arrayed carbon nanotubes in polycarbonate resin. Composite materials produced using this functional masterbatch exhibit excellent mechanical properties, electrical conductivity or antistatic properties, and surface finish, making them widely applicable.

The application belongs to the technical field of composite material preparation, and particularly relates to a continuous fiber reinforced ceramic matrix composite material and a preparation method thereof, which comprises the following steps: mixing a carbon source solution and ceramic powder to prepare slurry; depositing an interface in a fiber preform; introducing the slurry into a central region of the fiber preform by injection, and then performing solidification and cracking to obtain an intermediate; introducing the slurry into an edge region of the intermediate by vacuum impregnation and pressure impregnation, and then performing solidification and cracking to obtain an intermediate II; embedding the intermediate II with powder, and then performing RMI infiltration to obtain a densified ceramic matrix composite material. The application can prepare a porous composite material intermediate with a low open porosity in a short time, and can prepare a composite material with a high densification degree by performing RMI infiltration on the composite material intermediate.

The application discloses a kind of carboxyl butadiene-styrene latex and its preparation method and application.The carboxyl butadiene-styrene latex is the emulsion of three monomer copolymers of butadiene, styrene and 4-vinyl benzoic acid.The preparation method is to use 100 parts of deionized water as water phase, 35-45 parts of butadiene, 15-20 parts of styrene and 2-8 parts of 4-vinyl benzoic acid as organic phase, and is prepared by 0.05-0.1 parts of water-soluble and 0.1-0.15 parts of oil-soluble compound initiator to initiate emulsion polymerization.The carboxyl butadiene-styrene latex prepared in the application has better stability and adhesion than conventional acrylic-butadiene-styrene latex, and can be used as an additive in oil and gas well engineering to plug cracks and reduce leakage.

The utility model relates to the technical field of polycarboxylate superplasticizer preparation, and discloses a polycarboxylate superplasticizer feeding device which comprises a dosing barrel, the top of the dosing barrel is connected with a barrel cover, the top of the barrel cover is fixedly connected with a connecting column and a feeding pipe, one end of the connecting column is fixedly connected with a supporting frame, and the inner wall of the supporting frame is fixedly connected with a motor. An output shaft of the motor penetrates through the barrel cover and is fixedly connected with a connecting rod I; compared with the prior art, the feeding device has the advantages that scraps in a raw material bag, sediments or insoluble substances in raw materials and other impurities cannot be brought in in the feeding process, the blocking phenomenon in the filtering process is reduced, and the feeding device can operate continuously and efficiently; the polycarboxylate superplasticizer in the dosing barrel is fully mixed with other concrete raw materials; corrosion and abrasion of the residues to the inner wall of the feeding device are reduced, the service life of the feeding device for the polycarboxylate superplasticizer is prolonged, and the maintenance cost is reduced.