8results about How to "Dip evenly" patented technology

This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.

The invention relates to a precious metal three-way catalyst as well as a preparation method and application thereof. The precious metal three-way catalyst comprises an alumina carrier, a cerium-zirconium solid solution and an active component M1, metal M2 is also loaded on the alumina carrier; the cerium-zirconium solid solution covers the surface of the alumina carrier, and the active component M1 is dispersed on the surface of the cerium-zirconium solid solution; the active component M1 comprises any one or a combination of at least two of Rh, Ir or Ru; the metal M2 comprises a combination of at least two of Pd, Pt, Rh or Au; the active component M1 and the metal M2 comprise at least three different elements. The noble metal three-way catalyst provided by the invention is used for degrading CO, NOx and CH3OH in an equivalent combustion mode, and is good in low-temperature activity, good in hydrothermal stability, relatively small in performance difference after hydrothermal aging, and wide in application prospect.

The application discloses a kind of recombination unit sizing system and recombination material preparation process, belong to recombination material manufacturing technical field.Recombination unit sizing system, including front and rear arrangement's impregnation device, glue discharging device and the conveying guide between them.Impregnation device includes: first rack;Glue pool;Impregnation roller assembly, sequentially distributed and arranged on first rack along the direction of plate conveying;First rotary drive device;First rotary transmission assembly.Glue discharging device includes: second rack;Glue discharging roller assembly, sequentially distributed and arranged on second rack along the direction of plate conveying;Second rotary drive device;Second rotary transmission assembly.The recombination unit sizing system is extruded by multiple impregnation rollers, multiple glue discharging rollers are discharged, independently driven and controlled and process design, realizes the efficient, uniform impregnation and accurate, controllable glue discharging of recombination unit, and ensures the quality stability of final product.

This utility model discloses a system for preparing lyocell fiber spinning dope by modifying wood pulp, including an enzymatic purification kettle, a first washing kettle, a bleaching and impurity removal kettle, a second washing kettle, a pulverizer, a pulper, and a thin-film evaporator. The enzymatic purification kettle is connected to a first connecting pipe, which is equipped with a first delivery pump and a first press. The first press is connected to the first washing kettle, which is connected to a second connecting pipe. The second connecting pipe is equipped with a second delivery pump and a second press, which is connected to the bleaching and impurity removal kettle. The bleaching and impurity removal kettle is connected to a third connecting pipe, which is equipped with a third delivery pump and a third press. The third press is connected to the second washing kettle, which is connected to a fourth connecting pipe. The fourth connecting pipe is equipped with a fourth delivery pump and a fourth press. The fourth press, pulverizer, and pulper are connected in sequence. The pulper is connected to a fifth connecting pipe, which is connected to the thin-film evaporator via a screw delivery pump.

This invention provides a gelling device for continuous production of vulcanized fibers, belonging to the field of vulcanized fiber production technology. It addresses the problem of existing impregnation machines lacking lateral limiting constraints on the support rollers, leading to positional deviations in the raw material rolls during transport due to vibration or uneven traction. The device includes an impregnation machine body, scale markings, blocking components, a centering calibration component, and a splitting component. Multiple scale markings are dispersedly and fixedly connected above the support rollers. Two blocking components are dispersedly disposed on the outer side of the support rollers. The centering calibration component is disposed inside the support rollers. The splitting component is disposed inside the two blocking components. This invention, by setting the centering calibration component, can precisely adjust the position of the blocking components to ensure the raw material is positioned correctly.

The invention discloses a multi-layer carbon fiber felt glue joint automatic processing device and method, and belongs to the field of composite material processing, the device comprises a conveying mechanism for limiting and stably conveying a bearing disc on which carbon fiber felts are placed; the lifting supporting mechanism is arranged below the conveying mechanism and keeps lifting so as to fix the bearing disc in the conveying process; the moving mechanism is arranged above the conveying mechanism, linearly reciprocates in the conveying direction or the opposite conveying direction of the conveying mechanism and keeps a moving path to cover the lifting supporting mechanism; the pressing mechanism is arranged below the moving mechanism in a lifting mode, a pressing roller with the bottom capable of rotating makes contact with the carbon fiber felt on the bearing disc to achieve pressing, the pressing mechanism moves along with the moving mechanism, and the pressing force generated when the pressing roller makes contact with the carbon fiber felt is adjusted in an automatic lifting mode; a gluing mechanism and a welding mechanism are further arranged on the outer side face of the pressing mechanism. By means of the equipment, automatic gluing and welding operation of the multi-layer carbon fiber felt can be achieved.

The utility model provides a kind of hollow composite material skin forming system, the top of workbench is supported with skin forming mould, the top of skin forming mould is laid hollow composite material preform to be formed;The upper surface of hollow composite material preform is laid release cloth, the upper surface of release cloth is laid flow guide net, the upper surface of flow guide net is laid vacuum bag;Sealing rubber strip is arranged between vacuum bag and skin forming mould;The inside of vacuum bag and one end of hollow composite material preform are provided with glue pipe, glue pipe is connected with glue storage barrel by first communicating pipe, the inside other end of vacuum bag is provided with suction pipe, suction pipe is connected with resin collector by second communicating pipe;Resin collector is connected with vacuum pump by third communicating pipe.This system and method can be used for the forming of 3D felt skin structure aircraft adjusting piece, while meeting the performance structure of adjusting piece, ensure forming quality, and effectively improve forming efficiency.

This invention belongs to the field of thermoplastic carbon fiber composites, specifically disclosing a high flame-retardant and high heat-resistant polycarbonate-based carbon fiber composite. First, POSS-modified PDMS + thiol-olefin crosslinking technology is used to improve the glass transition temperature and flame-retardant properties of the polycarbonate / polysiloxane copolymer, yielding a modified polycarbonate / polysiloxane copolymer. Then, resin blending modification technology is used to introduce aromatic heterocyclic heat-resistant modifiers and sulfonate flame retardants into the copolymer to further improve the heat resistance and flame-retardant properties of the thermoplastic, yielding a modified polycarbonate. Finally, this modified polycarbonate is compounded with T700 grade 12K carbon fiber to obtain a high flame-retardant and high heat-resistant polycarbonate-based carbon fiber composite. This composite material achieves a V-0 rating and a glass transition temperature exceeding 222℃, exhibiting excellent flame-retardant and heat-resistant properties. Furthermore, it has low cost and good overall performance, making it particularly suitable for manufacturing components for railway vehicle carriages.