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156results about How to "Production cost advantage" patented technology

Method of preparing high-performance diamond semiconductor based on low-cost single crystal diamond

The invention discloses a method for preparing a high-performance diamond semiconductor based on low-cost single crystal diamond, and belongs to the technical field of novel semiconductor preparation. The process steps include a, a commercially available cheap high temperature and pressure Ib-type single crystal diamond substrate is subjected to acid pickling to remove surface inclusions and form a passivated oxygen termination surface; b, the activated diamond surface is subjected to short time treatment by microwave hydrogen plasmas to expose a fresh C-C dangling bond; c, a high-quality single crystal diamond thin film is epitaxially grown on the fresh diamond surface by microwave plasma chemical vapor deposition to achieve the diamond thin film epitaxy with low dislocation density and impurity content mainly through the introduction of oxygen atoms with a self-healing function; and d, a carbon source and a oxygen source are turned off, the epitaxially grown diamond surface is treated by the microwave hydrogen plasmas to obtain a high hydrogen termination density, and the treated diamond surface is cooled to room temperature under a hydrogen atmosphere to obtain a diamond semiconductor with high conductivity. According to the invention, the process flow is simplified, the technical difficulty and the production cost are reduced, and the production cycle is shortened.
Owner:UNIV OF SCI & TECH BEIJING

Copolymer, rubber composition, cross-linked rubber, cross-linked foam, and uses thereof

ActiveUS20110233448A1Adequate foamabilityExcellent kneading performanceBuilding constructionsPolymer sciencePtru catalyst
The present invention provides a rubber composition having adequate foamability, uses thereof, a copolymer contained in the rubber composition, a rubber composition capable of providing a cross-linked foam, which has a low specific gravity and an excellent shape-retaining property even when the usage of a nonconjugated polyene is reduced, and a cross-linked rubber and a cross-linked foam, which are produced from the rubber composition. A copolymer (A) according to the present invention is a copolymer including structural units derived from ethylene [A], an α-olefin [B], a nonconjugated polyene [C-1], in which one carbon-carbon double bond (C═C) polymerizable with a metallocene catalyst is present in one molecule, and a nonconjugated polyene [C-2], in which two bonds of C═C polymerizable with the metallocene catalyst are present in one molecule, and being synthesized with the metallocene catalyst, wherein (1) the units derived from the component [B] constitute 10 to 50 percent by mole, (2) the total of the units derived from the component [C-1] and the units derived from the component [C-2] is 1.0 to 6.0 percent by mole, (3) the molar ratio of the units derived from the component [C-1] to the units derived from the component [C-2] is 75/25 to 99.5/0.5, (4) [ML (1+4) 100° C.] is 10 to 200, and (5) 50>activation energy of fluidization (kJ/mol)>35 is satisfied.
Owner:MITSUI CHEM INC

Method for preparation of silicon-aluminum nitride or oxynitride fluorescent powder

The invention belongs to the technical field of fluorescent powder preparation, particularly relates to a method for freeze drying and auxiliary combustion synthesis of silicon-aluminum nitride or oxynitride fluorescent powder, and is characterized in that the method is implemented according to the following steps: (1) weighing raw material powder and a PVB binder according to the stoichiometric proportion of a fluorescent material; (2) adding the raw material powder and the binder to a tertiary butanol solvent, and carrying out ball milling, to obtain an evenly mixed slurry; (3) freezing and curing the obtained slurry for 2 h to 6 h; (4) placing the cured blank in a freezing dryer, carrying out vacuum drying to obtain a porous blank; and (5) placing the porous blank in a combustion synthesis reaction kettle, placing a Ti powder on the upper surface of the front end of the blank to be used as an igniting agent, vacuumizing, then filling nitrogen gas, and triggering the blank to carry out combustion synthesis reaction. The prepared silicon-aluminum nitride or oxynitride fluorescent powder has the advantages of uniform particle size distribution and good crystallization, allows the product to have no sintering agglomeration phenomenon, has no need for a subsequent crushing treatment process, and has significant advantages in preparation cost.
Owner:QINGDAO CUP NEW MATERIALS CO LTD

Method for manufacturing multilayer amorphous alloy and copper composite structure through intermediate layer diffusion

The invention discloses a method for manufacturing a multilayer amorphous alloy and copper composite structure through intermediate layer diffusion. The method includes the steps of cutting, grinding, polishing and cleaning an amorphous alloy sheet and a copper sheet; dividing an intermediate layer into a predetermined size with a blade; assembling and fixing the amorphous alloy sheet, the intermediate layer and the copper sheet for forming a fixed workpiece; placing the fixed workpiece in a vacuum diffusion furnace for enabling the intermediate layer to be dissolved in the amorphous alloy sheet and the copper sheet for further achieving diffusion welding. According to the method for manufacturing the multilayer amorphous alloy and copper composite structure through intermediate layer diffusion, the diffusion temperature can be reduced through the intermediate layer so as to enable the amorphous alloy sheet to maintain an amorphous state. The composite structure has the strength of the amorphous alloy and the toughness of the copper and can block the extension of a shear band in plastic deformation of the amorphous alloy, so that the problem of brittle failure easiness of pure amorphous alloy can be avoided, the anti-shear ability can be enhanced, the surface of the welded sheet is high in quality, and the connection is reliable.
Owner:HUAZHONG UNIV OF SCI & TECH

Diffusion welding multilayer structure diaphragm capsule

The invention is a diffusion welding multilayer structure diaphragm capsule, belonging to the field of diaphragm capsule manufacturing. By adopting the methods of diffusion welding, machining and shaping, the manufacturing of diaphragm capsule in the invention can be realized. The main procedures include thin wall blank preparation, surface cleaning, surface modified treatment, welding-stopping treatment, diffusion welding, machining, shaping and the like. Compared with the multilayer structure diaphragm capsule manufactured by other methods, the multilayer structure diaphragm capsule manufactured by the invention has the advantages of fine fatigue property (above 1 million times), strong pressurization performance, adjustable rigidity, high compression ratio (higher than 80%), capability of micromation of inner holes, high precision of geometric dimensions, strong destabilization resistance, precise and controllable weldingline profile, adjustable width of weldingline and the like. By using the invention, the diaphragm capsule in the shape of circle, square and other shapes can be manufactured, and can serve as a compensation element of displacement and angle in hydraulic, barometric, transferring pipeline installation, an elastic compensation element and a pore damping element as well as a measuring element for a manometer and an altimeter; besides, the diaphragm capsule can be also used as a heat transferring finned tube for air conditioning, refrigeration and other devices as well as a metal capsule of separating gas or liquid for an accumulator and a storage box. The invention can provide multilayer structure diaphragm capsule products with fine performance for related industries.
Owner:北京智创联合科技股份有限公司

Spreadlight lens and edge-lit backlight module containing spreadlight lens

The invention discloses a spreadlight lens comprising a lens body. The lens body comprises an incident surface, a reflecting surface and an emergent surface. The incident surface comprises an incident top surface and an incident side surface, the incident top surface is connected with the incident side surface to form a rotationally symmetric recess part, and a light source is arranged on the rotation axis of the recess part; the reflecting surface is not rotationally symmetric. The invention further discloses an edge-lit backlight module comprising a body. The body comprises a cavity, reflecting paper, a light bar, a diffuser plate and a optical film. The reflecting paper comprises attaching cavity reflecting paper which is attached to the bottom face in the cavity and light bar upper reflecting paper arranged at the top of the cavity. The light bar comprises a PCB substrate, a CSP light source and the spreadlight lens, wherein the PCB substrate, the CSP light source and the spreadlight lens are arranged on the inner side wall of the cavity. By the adoption of a special secondary light distribution spreadlight lens edge-lit mode and the arrangement of the reflecting paper with a special cambered surface type, the effects of being high in brightness uniformity, high in luminous efficiency and lightening and thinning in backlight module are achieved.
Owner:NINGBO ZHENGTE OPTICAL ELECTRIC APPLIANCE

Method for synthesizing hydroxyapatite from alkali residue

The invention discloses a method for synthesizing hydroxyapatite from alkali residue. The process of the method comprises the following steps of: (1) drying the alkali residue at 100-105 DEG C, grinding the alkali residue until the alkali residue can pass through a sieve with 80-140 meshes, so as to obtain alkali residue powder for the future use; (2) mixing the alkali residue powder with diluted hydrochloric acid in a solid-liquid ratio (g: mL) of 1: 10 to 1: 20, adequately stirring and then filtering, adjusting the pH of the filtrate to 9.5-10.5, and then removing a precipitate to obtain a supernatant, namely a calcium source; (3) slowly adding the calcium source in phosphate solution until a calcium-phosphorus molar ratio is 1.67, stirring to react for 1-2 hours, and then ageing for 12-24 hours; and (4) filtering and separating the reaction solution to obtain a white precipitate, washing the white precipitate with water and alcohol and drying the white precipitate to obtain white powder, namely hydroxyapatite. According to the method disclosed by the invention, the waste residue-alkali residue of an alkali factory is used as the calcium source, and hydroxyapatite is synthesized by a simple precipitation preparation method, thus reducing the production cost of hydroxyapatite and realizing the environmental protection conception of turning waste into wealth.
Owner:NANJING UNIV OF SCI & TECH

Machine for making soya-bean milk easy to clean

The invention relates to a soymilk machine which is easy to clean, and comprises a head, a cup body, a motor, a knife shaft, a grinding knife, a heating device and a control circuit board, wherein the head is covered on the cup body, and the motor is fixedly arranged in the head. The end portion of the knife shaft is fixed with the grinding knife, the head comprises a head upper cover and a head lower cover, the lower end of the head lower cover is fixedly equipped with a connector, the lower end of the connector is equipped with a disturbed flow curved surface body which is arranged on the upper of the grinding knife, and the connector and the disturbed flow curved surface body form into a cavity which is separated from water. A temperature sensor which is capable of directly contacting with the water is arranged on an opening which is arranged on the cavity wall of the cavity, a temperature-sensing end of the temperature sensor is in contact with liquid in the cup body, and the temperature sensor passes through the cavity, the head lower cover and the control circuit board through temperature signals. Under the state of working, the disturbed flow curved surface body or/and the lower portion of the connector are in general stretched into the water, the temperature sensor is arranged on the opening which is arranged on a touching water cavity wall, the temperature sensor directly contacts and perceives water temperature, which is transfered to the control circuit board to achieve effective temperature control through signal lines.
Owner:JOYOUNG CO LTD

Polypropylene resin composition and production process for large-caliber wall tube with hot-state winding structure

The invention discloses a polypropylene resin composition. The polypropylene resin composition comprises the following components in parts by weight: 75 to 85 parts of block polymerization polypropylene, 15 to 25 parts of reinforced modified master batch, 1 to 2 parts of a processing modifier, 3 to 8 parts of an anti-impaction modified material, and 0 to 2 parts of color concentrate. The invention also discloses a production process for a large-caliber wall tube with a hot-state winding structure. The production process comprises the following steps of: (1) blending and mixing the materials; (2) drying and preheating: drying and preheating the polypropylene resin composition by using hot blast; (3) performing plasticization and extrusion and molding by winding: plasticizing and extruding the polypropylene resin composition which is obtained in step (2), and performing hot-state winding on the extruded molten-state plastic to form a tubular product; (4) molding by cooling; (5) leveling by cutting; and (6) demolding: demolding the tubular product from a hot-state winding forming mold. The large-caliber hot-state winding structure wall tube produced from the polypropylene resin composition has high mechanical property, chemical corrosion resistance, high temperature resistance and long service life.
Owner:重庆顾地塑胶电器有限公司 +1

Single layer structured diaphragm and diaphragm capsule by diffusion welding

In the invention, the manufacturing of a single layer structured diaphragm and diaphragm capsule by diffusion welding is realized by the method of 'diffusion welding' + 'mechanical processing' + 'shaping' with the main process as follows: foil plate blank preparation, surface cleaning, surface modification treatment, stop welding treatment, diffusion welding, mechanical processing and shaping. The single layer structured diaphragm and diaphragm capsule by diffusion welding manufactured by the invention has good fatigue property which can reach over 1 million times according to the difference between structures, materials and use environment, strong compression capacity, high precision of geometric dimension, convenient installation, good sealing property, precise and controllable welding line outline, adjustable welding line width, unconstrained size of the workpiece being welded and other advantages. The single layer diaphragm and diaphragm capsule with the outline of a round, a square and other types of shapes can be manufactured by utilizing the invention, which can be used as installation displacement and angle compensation element, elastic compensation element and air hole damp element, and can also be used as the measuring element and information acquisition element of a pressure gauge and an altimeter, thus providing single layer diaphragm and diaphragm capsule products with good performance for related industries.
Owner:北京智创联合科技股份有限公司
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