38results about How to "Simple and stable process" patented technology

A white light-emitting device comprising a blue or blue-green light-emitting diode emitting light of 450-500 nm wavelength, and two phosphor materials capable of emitting a yellow light with 520 to 580 nm wavelength, and a red light with 580 to 640 nm wavelength, respectively. The light-emitting diode and the two phosphor materials are packaged together to form the white light-emitting device.

The invention discloses a micro-lattice mismatch quantum well solar cell and a manufacturing method therefor. The solar cell adopts p type Ge as material for a substrate; an In0.5Ga0.5P nucleating layer, an In0.01Ga0.99As buffer layer, a distributed type Bragg reflector, a first tunnel junction, an InxGa1-xP gradual change buffer layer, an InyGa1-yAs middle cell, a second tunnel junction, an InzGa1-zP top cell, an InyGa1-yAs Ohmic contact layer, a front side electrode and an antireflection film are orderly laminated on an upper surface of the substrate in a bottom-to-top manner; a back side electrode is made on a lower surface of the p type Ge substrate. According to the micro-lattice mismatch quantum well solar cell and the manufacturing method therefor, InyGa1-yAs and InzGa1-zP that are in a micro-lattice mismatch relation with the p type Ge substrate are respectively used as middle cell material and top cell material; an InyGa1-yAs/Ga0.92In0.08N0.028As quantum well structure is added, the InxGa1-xP gradual change buffer layer is adopted for eliminating defects such as dislocation and the like caused by micro-lattice mismatch, the distributed type Bragg reflector is adopted for improving a utilization rate of solar photons by the InyGa1-yAs middle cell, electric current density of the middle cell and the top cell can be improved finally, and photoelectric conversion efficiency of the cell can be raised.

A yellow phosphor material has a host with a formula (Tb_xM_yCe_z)Al₅O₁₂, wherein x+y+z=3 , 3>x>0 and y≠0 and a Ce activator. M is selected from the group consisting of Sc, Y, Dy, Ho, Er, Tm, Yb, and Lu. By changing the diameter of metal ions, the crystal field thereof may be modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light. The phosphor can be used with a blue LED to form a white light source.

The invention relates to a method and device for continuously preparing high-purity carbon nano tubes. The method comprises the following steps: (1) performing inert gas replacement on carbon nano tubes, passing through a pressurized seal pneumatic conveying device via a quantitative dumping device, and entering a gradient heating device at a normal temperature in a dense-phase flow form under drive of mixed gases of protective carrier gas and acid gas; (2) preheating and reacting the carbon nano tubes in the gradient heating device; (3) separating the purified carbon nano tubes from tail gases by virtue of a two-stage gas-solid separation device, cooling the carbon nano tubes by a cooling device in the gas-solid separation device, and enabling the carbon nano tubes to enter a high-puritycarbon nano tube collection device via a feeding hole; and (4) enabling the tail gases to enter a tail gas treatment device, feeding the protective gas to a protective gas inlet via a recycling pressure stabilizing device; and feeding impurity tail gases into a tail gas collection device. According to the method disclosed by the invention, the carbon nano tubes with the high purity of 99.9% or higher can be obtained, and the device disclosed by the invention is simple in operation, simple and stable in process, low in operating cost and stable in product quality.

The invention relates to a medicinal composition. The medicinal composition comprises sitagliptin, pharmaceutically acceptable salt thereof and/or hydrate of the salt, and anhydrous calcium hydrogen phosphate. The medicinal composition is further used for preparing a solid preparation, and is especially prepared into a tablet by a direct tabletting method. Through selection of the medicinal composition, especially selection of the specific anhydrous calcium hydrogen phosphate as a raw material, the quality control way of the medicinal composition using the sitagliptin, the pharmaceutically acceptable salt thereof and/or the hydrate of the salt as an active component can be significantly improved, and even production of related impurities in the medicinal composition can be significantly improved so as to improve the stability of the medicinal composition and relevant dosage forms.

A white light-emitting device comprising a blue-violet or blue LED and a phosphor material capable of emitting a yellow-green to orange-yellow light upon excitation by the light emitted by the LED. The light from the LED and the phosphor material are mixed in an appropriate ratio to produce a white light. The phosphor material has a general formula (Y_xM_yCe_z)Al₅O₁₂, where x+y=3, x, y≠0, 0.5>z>0, and M is selected from the group consisting of Tb, Lu, and Yb, with (Y_xM_y)Al₅O₁₂ serving as a host and Ce as an activator. By changing the composition of the metal elements in the host, the crystal field is modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light, leading to the change in the emitting wavelength of the phosphor material.

The invention relates to the technical field of carbon nano tube purification, in particular to a device and a method for directly electrifying and purifying a carbon nano tube. The device comprises amain reactor, the main reactor comprises a material preheating section, a low-temperature heating reaction section, a high-temperature heating reaction section and a material cooling section which are sequentially arranged from top to bottom, the upper end of the main reactor is connected with a feeding valve, the feeding valve is connected with a feeding weighing device, the feeding weighing device is connected with a constant-pressure tank, and the constant-pressure tank is connected with a carbon nano tube storage tank; the invention discloses a device and a process method for directly electrifying and heating a carbon nano tube material in a reactor and then continuously purifying carbon nano tubes by adopting chlorine or hydrogen chloride gas. According to the continuous industrial purification device, graphite is adopted as an inner container of a reactor, a pouring material frame is combined, carbon nano tubes in the reactor are directly powered on, and acid gas and granular carbon nano tubes are used for reaction purification.

The invention discloses a beneficiation method applied to superconduction magnetic separation of a rare earth ore, and aims to solve the technical problems of higher economical loss and resource wastecaused by lower recovery rate of a rare earth resource in a traditional rare earth beneficiation process. The substantial process of the beneficiation method is as follows: firstly, a raw ore of therare earth ore is crushed and grinded; the tailing discarding is performed on the rare earth ore in advance by centrifugal reselection; then, a reselected concentrate is grinded, and a superconductionmagnetic separator is used for superconduction weak magnetic separation to remove high-magnetism mineral impurities; then, superconduction strong magnetic separation is performed to obtain a rare earth rough concentrate; and finally, flotation is performed on the rare earth rough concentrate to obtain a high-grade rare earth concentrate. The beneficiation method greatly improves the sorting precision and efficiency, and reduces consumption of a total flotation medicament and consumption of a water resource through a breakthrough-developed reselection-superconduction magnetic separation-flotation process, so that the energy consumption and the operation cost are reduced, efficient sorting and utilization of the rare earth resource are implemented, and the grade and recovery rate of the rare earth ore are greatly improved.

An electric all-dimensional numerical control injection molding machine is applicable to production of injection products with high precision and complex three-dimensional shapes. The machine comprises a machine base, a main board, four sets of electric mould guiding devices, a cross-shaped chute mould assembly, and an injection device assembly. The electric mould guiding devices are mounted on a front face of the machine. A slider mould is disposed in a chute of a cross-shaped mould base, is connected to a shaft of an electric driver, and implements mould opening and closing functions by means of linear movement of the shaft of the electric driver. An injection system of the machine is used for injecting plasticized, fused, and homogenized plastic materials into a mould cavity of the mould.

The invention discloses a modifier for thin-wall and high-strength gray cast iron and a melting method thereof. The modifier comprises the following components with contents in percentage by weight: 3.0-8.0% of rare earth, 15.0-30.0% of silicon, 10.0-18.0% of chromium, 1.0-4.0% of zirconium, 7.0-14.0% of manganese, 0.2-1.5% of calcium, the balance iron and 24.5-63.8% of inevitable trace elements.The modifier is low in melting point, high in solubility, and not liable to form hard spots; the components are uniform and not liable to generate segregation after being melted, and the casting is stable in quality; the particle sizes of the modifier used in a tapping ladle are 3-5mm, and the modifier is not liable to be involved into molten slag in the ladle or attached onto the wall of the ladle; the amount of graphite in cast iron can be increased, and the sharp corners of the flake graphite are passivated, so that the mechanical property of the casting is improved; and the modifier obtained by the new modifier melting method meets the strength requirement of high-strength gray cast iron, and reduces the shrinkage performance; and meanwhile, the adding amount of molybdenum-chromium alloy can further be replaced or reduced.

The invention discloses a nano titanium carbide particle reinforced ADC12 aluminum matrix composite and a preparation method thereof. The preparation method comprises the steps that nano titanium carbide powder and aluminum powder are put into a ball mill to be subjected to ball milling, and mixed powder composed of the nano titanium carbide and the aluminum is obtained; an aluminum ingot is put into a smelting furnace, aluminum-silicon intermediate alloy is added into the smelting furnace, then, copper is added into the smelting furnace, finally, the mixed powder composed of the nano titaniumcarbide and the aluminum is added into the smelting furnace, a refining agent is added for deslagging and degassing, a molten liquid sample is analyzed and adjusted, chemical elements comprise 9.6-12.0% of silicon, 1.5-3.5% of the copper, 1.0-3.0% of the nano titanium carbide and the balance aluminum, drossing and casting molding are conducted, and a blank needing to be subjected to post-treatment is obtained; and the blank needing to be subjected to post-treatment is put into a heat treatment furnace to be heated and subjected to heat preservation, and then is taken out of the heat treatmentfurnace to be subjected to water quenching, after water quenching, heating and heat preservation are conducted again, and a finished product is obtained. The microstructure of an ADC12 aluminum matrix is perfected, and the mechanical property is improved. The technology is simple, convenient and stable, the preparation cost is low, and environmental friendliness is achieved.

The invention discloses a molybdenum-containing composite nitride antifriction coating. The molybdenum-containing composite nitride antifriction coating is a CrTiAlN/MoN coating with a layered periodic structure and has a modulation period of 3-8nm. The invention also discloses a preparation method of the molybdenum-containing composite nitride antifriction coating. The preparation method comprises cleaning and drying a workpiece, putting the workpiece into a vacuum chamber, carrying out vacuum-pumping, feeding argon into the vacuum chamber, carrying out ion bombardment cleaning, feeding nitrogen into the vacuum chamber, carrying out coating deposition and taking out the workpiece after a temperature in the vacuum chamber is reduced to the room temperature. The molybdenum-containing composite nitride antifriction coating has a layered periodic structure and the layered periodic structure guarantees high hardness and high bonding strength of the coating, is conducive to lubrication phase molybdena formation in friction wear and realizes coating lubrication and friction reduction. Compared with the traditional nitride coating, the molybdenum-containing composite nitride antifriction coating has a lower friction coefficient and a lower specific wear rate in a temperature range of the room temperature to 700 DEG C and can satisfy high speed dry cutting technology requirements on cutter coating wear resistance and thermal properties.

A process for preparing an optical colored polyester film using microwave technique comprises the following steps: microwave dyeing treatment by passing a polyester film through a disperse dye suspension with steady water phase in a dye-pool comprising a microwave generator; rinsing with water; rinsing with solvent; finally drying treatment, and then uniform optical colored films with various colors are obtained. The optical colored films are used as optical filters or optical protection films and as glass window films for automobile, and domestic and office windows.

A magnetic field sensing device including a magnetic flux concentrating module and a plurality of vortex magnetoresistors is provided. The magnetic flux concentrating module has a first side, a second side, a third side and a fourth side, wherein the first side is parallel to the third side, the second side is parallel to the fourth side, and the first side is not parallel to the second side. The vortex magnetoresistors are disposed beside the first to the fourth sides. The vortex magnetoresistors have a same pinning direction. The pinning direction is inclined with respect to the first side and the second side. The vortex magnetoresistors are configured to be connected to form a plurality of different Wheatstone bridges, so as to sense magnetic field components in a plurality of different directions, respectively.

A method for manufacturing a radar sensor. In the method, a circuit board is provided. A surface of the circuit board is equipped with a radar transceiver. A waveguide structure made of plastic material is provided. Waveguide channels including at least one metallic conductively coated side wall in the waveguide structure and an open side are formed. The waveguide structure is soldered to a surface of the circuit board, the open side being oriented in the direction of the circuit board.