9results about How to "Improved performance characteristics" patented technology

The present invention relates to a scroll compressor (1) with oil return for refrigerant-oil mixture, the scroll compressor (1) comprising a housing element (2) and a fixed scroll (3), wherein the housing element (2) is connected to the fixed scroll (3) by means of a seal (4) such that an outlet chamber (6) is formed between the housing element (2) and the fixed scroll (3), wherein, for oil separation and oil return purposes, an oil separation chamber (9) having a high-pressure refrigerant outlet (10) and an oil collection area (13) and an oil return passage (12) toward a suction pressure chamber (15) are arranged downstream of the outlet chamber (6), the scroll compressor being characterized in that an outlet chamber discharge member (11) for discharging oil into the oil return passage (12) of the oil separation chamber (9) is formed in the lower region of the outlet chamber (6) relative to the ground.

This application discloses a method for preparing high-purity electronic-grade titanium dioxide from ilmenite, belonging to the field of titanium dioxide preparation technology. The method includes steps such as raw material processing, concentrated sulfuric acid acidolysis, sedimentation and filtration, FeSO4 crystallization and separation, preparation of hydrated titanium dioxide, washing and bleaching of hydrated titanium dioxide, acidolysis of hydrated titanium dioxide, secondary hydrolysis, washing and filtration, and calcination. This method effectively removes various impurities such as iron, phosphorus, niobium, and zirconium through acidolysis, secondary hydrolysis, and multiple fine washing operations on the hydrated titanium dioxide intermediate. The resulting titanium dioxide product has a purity of over 99.9%, providing a new route for preparing high-purity electronic-grade titanium dioxide from ilmenite.

The invention discloses a broadband electrostatic transient pulse protection module, and relates to the technical field of electrostatic protection devices. The input end of the protection circuit is divided into two paths after passing through a first terminal load Tem1, the first path is grounded through a gas discharge tube X9, the second path is connected with one end of an inductor L7, the other end of the inductor L7 is divided into three paths, the first path is connected with one end of an impedance conversion network V1, the second path is grounded through a transient suppression diode X2, and the other end of the inductor L7 is connected with the other end of the impedance conversion network V1. The third path is grounded through a transient voltage suppressor X3 and a transient voltage suppressor X4 in sequence; the other end of the impedance conversion network V1 is divided into three paths, the first path is connected with one end of the impedance conversion network V2, the second path is grounded through a transient suppression diode X5, and the third path is grounded through a transient suppression diode X6; the other end of the impedance conversion network V2 is divided into three paths, the first path is connected with one end of an inductor L6, and the second path is grounded through a transient suppression diode X7. The protection circuit can effectively improve the electrostatic pulse protection performance and has good transmission characteristics.

The present disclosure relates to a negative electrode and a method of manufacturing the same. The negative electrode includes a silicon-based negative electrode active material and a carbon-based negative electrode active material to have excellent charge / discharge capacity and energy density, and to have excellent fast charging performance and lifespan characteristics because the carbon-based negative electrode active material included in each negative electrode active layer is oriented to have a predetermined inclination with respect to a negative electrode current collector.

The application belongs to the technical field of nanocomposites, and particularly relates to a core-shell type thermite, a preparation method and application in a biomass blasting device. The preparation method comprises the following steps: S1, adding fly ash into a hydrochloric acid solution to dissolve the fly ash, then filtering to obtain a filtrate, adding a sodium hydroxide solution into the filtrate, then performing stirring, filtering and drying treatment to obtain a precipitate, calcining the precipitate to obtain iron oxide particles for standby; S2, adding aluminum powder and boron powder into an organic solvent to perform ultrasonic mixing, then performing heating and stirring to volatilize the organic solvent to obtain an aluminum-boron compound, and drying for standby; S3, adding the iron oxide particles, the aluminum-boron compound and an adhesive into an acetone solution to mix uniformly to obtain a mixture, performing stirring and ultrasonic treatment on the mixture to obtain a suspension; adding a polyvinyl alcohol emulsifier into deionized water and performing heating and stirring to obtain an emulsion; S4, in a high-speed dispersion homogenizer, adding the suspension dropwise into the emulsion to wrap the suspension in the emulsion to obtain an oil-in-water emulsion, and performing evaporation, filtering, washing and drying treatment on the oil-in-water emulsion to obtain the core-shell type nano thermite.

The forming method of the diamond-like carbon film comprises the following steps: carrying out polishing treatment on the surface of a base material by using a positive electrode electron beam so as to remove oxides and pollutants on the surface; a diamond-like carbon film is deposited on the surface of the base material, and the flow and the deposition rate of reaction gas are continuously adjusted in the deposition process; and carrying out annealing treatment on the diamond-like carbon film. The method is simple and efficient, the surface ductility of the diamond-like carbon film can be effectively changed, the mechanical property and the surface characteristic of the diamond-like carbon film are improved, and the failure phenomena such as cracking are avoided, so that the application effect is improved, the service life is prolonged, and the application range is expanded.

The utility model provides a kind of biscuit slitting forming roller device, belong to roller device technical field, the biscuit slitting forming roller device includes roller, roller is fixed by frame, bottom is provided with transmission shaft, transmission shaft bottom is provided with rolling shaft, rolling shaft is used to drive transmission shaft rotation, to drive roller rotation, roller includes: air hole roller includes hollow roller main body, a plurality of scalable air needle, spring mechanism, adjusting disc and adjusting screw, air needle is connected with adjusting disc inside roller main body by spring mechanism, adjusting disc can be rotated by external adjusting screw, with the rotation of adjusting disc, air needle is extended or retracted roller main body surface under the action of spring;Slitting forming roller includes two nested rollers inside and outside, and the surface of inner roller is provided with basic slitting edge, and the outer roller is rotatable adjusting ring, solve the problem that traditional biscuit slitting forming roller device is not uniform due to adhesion and low production efficiency.

The utility model discloses a flame-retardant environment-friendly control flexible cable, which comprises a conductor, a low-smoke halogen-free flame-retardant polyolefin insulating layer is extruded outside the conductor, a copper wire shielding layer is woven outside the low-smoke halogen-free flame-retardant polyolefin insulating layer, a mildew-resistant layer is arranged outside the copper wire shielding layer, and the mildew-resistant layer is arranged outside the low-smoke halogen-free flame-retardant polyolefin insulating layer. The mildew-resistant layer is wrapped by a ceramic silicone rubber composite tape to form a wire core, the wire cores are twisted to form a cable core, the cable core is filled with a ceramic fire-resistant filling rope, carbon fibers are placed in the ceramic fire-resistant filling rope, a polyester tape is wrapped outside the cable core to fasten the cable core, and the polyester tape is wrapped outside the cable core. A carbon fiber filament protection layer is woven outside the polyester belt, and an outer sheath is wrapped outside the carbon fiber filament protection layer. The flame-retardant environment-friendly control flexible cable integrates various advanced materials and technologies, has excellent flame-retardant, environment-friendly, shielding, high-temperature-resistant, weather-resistant and mechanical properties, and can meet the use requirements in various complex environments.

The invention relates to the technical field of high polymer materials and coatings, in particular to a flame-retardant solid powder coating with a hydrophilic metal matrix and a preparation method of the flame-retardant solid powder coating. The solid powder coating is prepared from the following components in parts by weight: 15 to 40 parts of flame-retardant tackifying composite powder, 100 parts of epoxy resin, 30 to 35 parts of phenolic curing agent, 20 to 40 parts of titanium dioxide, 0.8 to 2.0 parts of flatting agent and 0.3 to 0.8 part of benzoin. The flame-retardant tackifying composite powder is a ternary grafted copolymer which takes branched polyethyleneimine as a framework and is grafted with a polyethylene glycol chain segment and sulfydryl DOPO silane through click chemistry. The powder is compounded with an epoxy resin system, and the formed coating integrates efficient halogen-free flame retardance, strong chemical tackifying and good flexibility and is suitable for the field of metal surface coating with high requirements for safety and reliability.