468results about How to "Good performance and stability" patented technology

According to one embodiment, a neurological stimulation system is adapted for implantation into a person's body for electrical, chemical, or combined electrical and chemical stimulation of target nerve tissue in the person's brain stem. For electrical stimulation, the system includes an electrical stimulation lead adapted for implantation on, in, or near the brain stem, and including electrodes adapted to be positioned on, in, or near target nerve tissue in the brain stem, for delivering electrical stimulation energy to the target nerve tissue. For chemical stimulation, the system includes an infusion catheter adapted for implantation on, in, or near the brain stem, and including openings adapted to be positioned on, in, or near target nerve tissue in the brain stem, for delivering a chemical to the target nerve tissue. The system also includes a stimulation source adapted for implantation in the person's body and operable to generate pulses of electrical stimulation energy or pulses of the chemical, for delivery to the target nerve tissue in the brain stem.

The invention discloses a hot rolling wire rod for a 60 kg-stage high-strength welding wire and a production method thereof. The hot rolling wire rod comprises the following chemical components including, by mass, 0.06% to 0.12% of C, 0.40% to 0.80% of Si, 1.50% to 2.00% of Mn, 0.020% or less of P, 0.020% or less of S, 0.040% to 0.060% of V, 0.050% to 0.090% of Ti, 0.20% to 0.45% of Cr and the balance Fe and unavoidable impurities. The production method comprises steel making, continuous casting, heating, rolling, spinning and cooling procedures. According to the hot rolling wire rod for the 60 kg-stage high-strength welding wire and the production method thereof, the hot rolling wire rod for high-strength welding is produced through vanadium and titanium alloying, microstructures of equiaxial ferrite and pearlite are obtainedin cooperation with control over the finish rolling temperature, spinning temperature, cooling temperature and winding temperature, the hot rolling wire rod is processed into a gas shielded welding rod, the deposited metal tensile strength is 600 MPa to 700 MPa, and the wire rod is low in cost and good in performance stability.

The invention relates to a thermoplastic composite solid propellant and a preparation method thereof, and belongs to the technical field of composite solid propellant preparation. The invention relates to the thermoplastic composite solid propellant and the preparation method thereof. The melting temperature of the thermoplastic composite solid propellant is lower than 95 DEG C on the premise thata solvent and a liquid plasticizer are not added, the viscosity of molten slurry is low, the safety performance is excellent, and additive manufacturing of the composite solid propellant can be achieved through a fused deposition technology; the energy level of the thermoplastic composite solid propellant is equivalent to that of a medium-energy thermosetting propellant, and the thermoplastic composite solid propellant can be used as a power source of a complex-drug-type solid engine and a layered variable-thrust solid engine in the future.

The invention belongs to the field of oxygen preparation through photocatalysts by decomposing water with visible lights and discloses a nickel titanium hydrotalcite and graphene composite photocatalyst responsive to visible lights and a method for preparing the same. Grapheme serves as an electric transmission body template, the nickel titanium hydrotalcite and graphene composite photocatalyst of uniform partical sizes and good dispersibility is deposited on the surface, and large surface areas and more active centers are provided. A series of photocatalysts with superior performances and efficient water decomposition oxygen preparation effects under visible lights can be obtained by regulating composition ratios of metals of different valence states on hydrotalcite laminate and load amounts of carrier grapheme, and photocatalytic performances of the photocatalyst are superior to those of traditional WO3 photocatalysts.

The invention provides a medium of a high-voltage ceramic capacitor with high performance and middle-low temperature sintering, which relates to the technical field of inorganic non-metal material. The invention adopts the prior method for preparing the medium of the high-voltage ceramic capacitor to prepare the medium of the high-voltage high-stability ceramic capacitor containing no lead, cadmium or other toxicities, and having high performance and middle-low temperature sintering (the sintering temperature is between 1,100 and 1,150 DEG C) by the prior chemical raw materials of capacitor ceramics. The medium is applicable to the preparation of single-chip ceramic capacitor and multi-layer tablet ceramic capacitor so as to greatly reduce the cost for the ceramic capacitor and avoid environmental pollution during preparation and application. The medium is characterized in that the medium comprises the following compositions (in weight percentage): 58 to 92 percent of BaTiO3, 2 to 19 percent of SrTiO3, 0.5 to 10 percent of CaZrO3, 0.05 to 1 percent of Nb2O5, 0.03 to 1.0 percent of Y2O3, 0.03 to 1.0 percent of Co2O3, and 6 to 30 percent of Bi2Sn2O7, wherein each of the BaTiO3, the SrTiO3 and the CaZrO3 is synthesized by a solid phase method by the prior chemical materials. The medium has high voltage resistance reaching over 10kilovolt/millimeter, specific inductive capacity of between 2,200 and 3,500 and small variance ratio of capacitance temperature, accords with the requirement on X7R property, Y5T and Y5U property, has excellent stability and high security when used, and does not pollute environment.

The invention discloses conductive ink which comprises, in weight percentage, 5-50% of silver nano-wire dispersion liquid, 0.1-5% of conductive macromolecules, 0.01-0.5% of silane coupling agents, 0.1-5% of viscosity adjusting agents, 5-40% of organic solvents, 5-40% of deionized water, 0.1-5% of macromolecule resins, 0.1-5% of pH (potential of hydrogen) value adjusting agents, 0.1-0.5% of non-ionic surface active agents, 0.01-0.5% of wetting dispersants, 0.01-0.5% of leveling agents, 0.01-0.5% of defoaming agents and 0.01-1% of metal nano-particles. The invention further discloses a preparation method of the conductive ink, a reel-to-reel conductive film and a preparation method of the reel-to-reel conductive film. The conductive film prepared by the conductive ink has the advantages of low resistance, haze and production cost, good conductivity and high light transmittance and can be optionally bent and twisted, and the requirements of flexible touch screens can be met.

The invention provides a Ni-Fe-Mn-Al alloy material, which has a chemical formula of Ni<50-x>Fe<x>Mn<50-y>Al<y> (2=<x=<9, 16<=y<=18). The preparation comprises the following steps: (1) weighting pure elements according to the ratio of the chemical formula, mixing the pure elements together; (2) placing the mixed material in a water-cooling copper crucible, and repeatedly smelting the mixed material through a conventional electric arch smelting method so as to obtain a uniform alloy casting ingot. The obtained polycrystalline casting ingot can be made into Ni<50-x>Fe<x>Mn<50-y>Al<y> rapidly-quenched strips with a certain texture through a melt quick quenching method. Compared to that of the conventional Ni-Mn base ferromagnetic shape-memory alloy, the binding strength among the crystals of the Ni-Fe-Mn-Al alloy is higher, and thus the mechanical property of the Ni-Fe-Mn-Al alloy is better. The Ni-Fe-Mn-Al alloy is prepared through a conventional method, the raw materials are cheap, and furthermore, the Ni-Fe-Mn-Al alloy has a strong magneto-thermal effect under a low magnetic field, so the Ni-Fe-Mn-Al alloy can be applied to the magnetic refrigeration field.

The invention discloses a method for preparing modified lithium nickel manganese oxide which is the anode material of a lithium ion battery. The method comprises the following steps: mixing a manganese salt material and a nickel salt material, and preparing a nickel manganese precursor through a sol-gel method; mixing the nickel manganese precursor and the nickel salt by using a three-dimensional oblique type mixing machine; presintering and high temperature sintering, and doping F- or F- and metal cations, then adding a metallic oxide and performing wet coating; and finally, acquiring a lithium nickel manganese oxide finished product by low temperature sintering, fluid energy milling and grading. The method provided by the invention uses an ion doping modification technology to improve the cycle performance and high temperature stability of the lithium nickel manganese oxide, and uses a wet coating technology to improve the high pressure cycle performance and high temperature stability of the lithium nickel manganese oxide.

The invention discloses an asphalt tile. The asphalt tile is of a multilayer structure, and consists of a mineral particle layer, a glass fiber felt, modified asphalt coating layers and an isolation material layer from top to bottom, wherein the mineral particle layer and the glass fiber felt are arranged on the upper surface, the modified asphalt coating layers are arranged at the two surfaces of the glass fiber felt, and the isolation material layer is arranged on the lower surface. The asphalt tile has the advantages that the good mineral particle adhering performance, anti-aging performance and flame-retardant performances are realized; the asphalt tile can be applied to various types of building roofs, especially the slope roofs of civil houses and villas.