46results about How to "Save the craft" patented technology

The invention belongs to the texturing field of a crystalline silicon solar cell, and specifically relates to a texturing method for polysilicon wafer cutting by a diamond wire. The texturing method comprises the following steps of 1, preparing a corrosion liquid, putting a silicon wafer into the corrosion liquid to be reacted at a temperature of 20-80 DEG C for 4-15min to form a porous structureon the surface of the silicon wafer; 2, performing water washing on the silicon wafer processed in the first step, and then cleaning the silicon wafer by a demetalization cleaning liquid at a normal temperature to remove solid metal granules from the silicon wafer, wherein the cleaning time is 2-8min; and 3, performing water washing on the silicon wafer processed in the second step for 30-100S; and performing correction on the porous structure on the surface of the silicon wafer by adopting a texturing correction liquid. By cutting the polysilicon surface by the diamond wire, the texturing structure with uniform dimensions, hole diameter of 400nm-1.5mm, hole depth of 200-500nm and low reflectivity can be obtained, thereby improving photoelectric conversion efficiency effectively.

The invention discloses a selective heap leaching gold extraction process for gold mine containing copper, belonging to the field of hydrometallurgy. The process comprises the steps of: smashing and heaping gold mine containing copper; carrying out alkali treatment on the mine; then adding ammonium salt and sodium cyanide according to a certain proportion to realize the selective leaching of the gold and the restriction to the leaching of the copper; and finally absorbing and extracting the gold from leaching solution by conventional active carbon. The invention has the advantages of simple process method, short procedure, simple equipment, easy implementation, high gold leaching efficiency, low consumption of sodium cyanide, low energy consumption, little investment and low cost, and is the gold extraction method with easy realization of industrialized production and favorable economical benefit.

A carried TiO2 catalyst used for synthesizing the phenyl oxalate used to prepare diphenyl carbonate (DPC) by ester exchange is prepared through preparing the dipping liquid, pretreating carrier, mixing it with said dipping liquid, hydrolyzing, drying and calcining. It has high activity and no pollution.

The superhard silicon carbide ceramic nanometer mirror grinding process includes grinding the workpiece with dressed and shaped coarse diamond wheel in Z direction for plastic domain grinding with the cutting depth controlled within 100 nm; shifting the coarse diamond wheel in X direction for the distance fx and performing the next grinding so as to form envelope trace of height he on the surface of the workpiece and form flat smooth nanometer mirror. In the conditions of proper grinding wheel diameter Dish washer, fx smaller than 100 microns, the envelope trace height he will smaller than 15 nm. The present invention makes it possible to realize super precision surface machining in the machine tool of only micron level or submicron level precision. The present invention has low cost, great grinding ratio and high machining efficiency.

The invention discloses a semiconductor PiP (package in package) system structure and a manufacturing method thereof. The semiconductor PiP system structure comprises a lead frame, a first metal material layer, a second metal material layer, an IC (integrated circuit) chip provided with salient points, a lead bonding IC chip, an insulating filling material, a pasting material and a plastic package material, wherein the lead frame comprises a chip carrier and multiple pins which surround the chip carrier and are arranged in multiple circles; the first metal material layer and the second metal material layer are respectively positioned on the upper surface and lower surface of the lead frame, and the insulating filling material is positioned below a terraced structure of the lead frame; the lead bonding IC chip is positioned on the chip carrier; and the salient points of the IC chip provided with the salient points are positioned on the inner pins of multiple circles of the pins in a flip-chip bonding manner, the plastic package material is used for coating the IC chip provided with the salient points and the lead bonding IC chip, thus forming the semiconductor PiP system structure. The invention relates to a three-dimensional package structure which has the advantages of high reliability, low cost and high I / O (input / output) density and is based on QFN (quad flat no-lead) package and a manufacturing method thereof.

A composite titanium oxide-silicon oxide as the catalyst for synthesizing phenyl oxalate by ester exchange, which is used to prepare diphenyl carbonate (DPC), is prepared through preparing the precursor solutions, mixing to obtain sol, depositing, drying and calcining. It has high activity.

A porcelain grey tile without carburization and a sintering method thereof. Bauxite, purple sand, clay, and gas stove coal cinder are mixed, added with water to prepare a green body, and then the porcelain grey tile without carburization is sintered under a certain temperature condition. According to the invention, a mixture of multiple materials is used instead of pure clay for sintering, which saves clay resources; the green body does not crack when a lot of water is lost within a short period, which greatly shortens the drying time of the green body; during high temperature sintering, carbon particles are generated in raw coal reactions of generator gas and gas stove coal cinder, and colorize the inner and outer sides of the green body, which omits the colorization and color preservation processes in the prior art, shortens the process flow, increases the sintering efficiency, and saves energy.

The invention provides a photosensitive imaging combination which is characterized in that the combination comprises a photosensitive resin, a photoinitiator, a diluent, a thermal curing agent, filler and additives; wherein, the weight percentages of the combination components are as follows: 20 to 80 percent of photosensitive resin, 0.5 to 15 percent of photoinitiator, 5 to 40 percent of diluent, 0.2 to 15 percent of thermal curing agent and 3 to 40 percent of filler. A film made of the combination is provided with better heat resistance, anti-corrosion capability and fitting capability. When the combination is applied to the inner-layer circuit preparation of multi-layer printed circuit boards, the boards with etched circuits can be directly laminated without removing anti-corrosion inks, thus directly avoiding the film-removing process and the copper face coarsening process (brownification or melanization).

The invention relates to a process for recycling high-purity gold from anode slime through an organic reduction method and belongs to the technical field of wet-method smelting production. The process includes the following steps that firstly, the anode slime is soaked in and washed through boiled nitric acid so as to remove impurities; secondly, residues insoluble in the nitric acid is dissolved through aqua regia to dissolve gold; thirdly, a gold-contained aqua regia solution is reduced through oxalic acid; and fourthly, leached residues are washed through water, pickled and washed through water again, so that a finished gold product meeting the international IG-Au of over 99.99%. By the adoption of the method, a traditional process for extracting gold through an oxalic acid reduction method is improved, the quality of the finished gold product is greatly improved, an electrolysis process and refinement performed after the traditional process are omitted, a production period is shortened, and production cost is saved.

The invention provides a leakage coaxial cable, comprising an inner conductor, an insulation layer, an outer conductor and a sheathing layer which are sequentially arranged from inside to outside; wherein the outer conductor is provided with a notch, the outer conductor is a metal composite layer provided with self-adhesion structure and is bonded with the insulation layer into a whole. The invention also provides a manufacturing method of the leakage coaxial cable, including that: a metal foil provided with self-adhesion structure is longitudinally wrapped onto the insulation layer; the sheathing layer is subject to extrusion moulding; and cooling is carried out in a cooling water tank. The leakage coaxial cable of the invention has high structural stability and good bending property; besides, the metal foil provided with self-adhesion structure is adopted, metal dosage is reduced, metal strip embossing or coining and lapping after longitudinal wrapping in the existing process are eliminated, production efficiency is improved, and production cost is reduced.

The invention discloses a coal gangue ceramic wall and ground brick and a preparation method thereof. The coal gangue ceramic wall and ground brick is compounded from a base body layer and a surface layer. The base body layer comprises the following raw materials in percentage by weight: 30-68 percent of coal gangue, 0-25 percent of pulverized fuel ash, 15-30 percent of quartz, 15-30 percent of feldspar and 2-8 percent of bentonite. The surface layer comprises the following raw materials in percentage by weight: 40-55 percent of kaolin, 20-35 percent of quartz, 20-30 percent of feldspar and 3-8 percent of bentonite, wherein the pigment which is 0-8 percent of the weight of the material of the surface layer is additionally added into the material of surface layer. The coal gangue ceramic wall and ground brick has a double-layer structure compounded from the base body layer and the surface layer, and the working surface (surface layer) of the brick is lighter than the base body layer and may be white, light yellow, red or other colors set according to the demand, thereby overcoming the defects of deeper color and single hue of the coal gangue ceramic wall and ground brick manufactured by the conventional method and expanding the application field.

The invention relates to a Fischer-Tropsch synthesized Co-based fluidized bed catalyst and a preparation method thereof, mainly solving the problems existing in the prior art because an Fischer-Tropsch synthesis reaction is a strong exothermic reaction which causes thermal withdrawal difficulty in a reactor, temperature runaway and easy catalyst inactivation in case of using a fixed bed, and relatively low selectivity of heavy hydrocarbon in case of using a fluidized bed. By adopting the preparation method and the technical scheme that at least one of oxides of Si or Al or a mixture of the at least one oxide and ZrO2 is selected as a carrier, and the active constituent contains the following composition with a chemical formula in the atomic ratio of Co100AaBbOx, wherein A is selected from at least one of alkali metal or alkaline earth metal, B is selected from at least one of Cr, Ni, Cu and Zn to be combined into a catalyst, the invention favorably solves the problems and can be used in the industrial production of the Fischer-Tropsch synthesis reaction.

The invention relates to a method for preparing a fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst, which mainly solves the problem of complex catalyst preparation process in the prior art. For solving the problem, the invention adopts the technical scheme that: in the catalyst, Co is used as a main active ingredient, alkali metal and rare-earth metal La or Ce are used as cocatalysts,and a mixture of SiO2 or Al2O3 and ZrO2 is used as a carrier; and the method comprises the following steps of: mixing salt solution of the main catalyst and the cocatalysts and the sol solution of the carrier to obtain catalyst slurry containing 10 to 50 weight percent of solid, adjusting the pH value of the slurry to between 0.1 and 7 by using acid or alkali, performing spray drying molding on the slurry, and baking the molded product to obtain the catalyst. The method is applied in industrial preparation of the fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst.

The invention discloses a nano TiO2-diatomite composite photocatalyst and a preparation method thereof. The nano TiO2-diatomite composite photocatalyst is prepared from the following raw materials: raw diatomite, titanium tetrachloride, ammonium sulfate and iron salt, wherein the mass ratio of the raw materials is that the ratio of the raw diatomite to the titanium tetrachloride is 100 to (80-200), and the ratio of the titanium tetrachloride to the ammonium sulfate to the iron salt is 100 to (17-66) to (0-0.7). With the adoption of the composite photocatalyst, the problems in the prior art that the visible light utilization rate of the composite photocatalyst is low and the degradation capability on organic pollutants is low are solved, the visible light utilization rate of the composite photocatalyst is improved, and the degradation capability on the organic pollutants is improved.

The invention relates to roadbase mixture prepared from municipal sludge resourcefully treated by a dedicated soil stabilizer. The roadbase mixture is prepared from the materials of 100 weight parts of initial mixture, 3 to 8 weight parts of cement and 0.01 to 0.1 weight part of the soil stabilizer; the initial mixture is prepared from 100 weight parts of municipal wet sludge, 15 to 20 weight parts of quicklime and solid waste; the soil stabilizer is prepared from 100 weight parts of water, 1 to 15 weight parts of surface active agent and 0.1 to 10 weight parts of boric acid or borate. The use amount of the solid waste is 7 to 13 times of the total volume of the mixed municipal wet sludge and the quicklime. The roadbase mixture has very good compressive strength.

The invention relates to an intelligent card and mobile terminal battery composite structure arranged in a mobile terminal. A sensing antenna arranged on an intelligent card is packaged in a card body layer, the sensing antenna and a non-contact chip corresponding to the sensing antenna are in circuit connection to form a loop, and therefore data exchange is carried out between an external matched reading-writing device and the non-contact chip through wireless radio frequency recognition. The composite structure is provided with a shielding layer blocking electromagnetic interference signals. The inner side of the shielding layer faces the outer side of a battery. The outer side of the shielding layer faces the inner side of the card body layer. The outer side of the card body layer faces the inner side of a shell of the mobile terminal, and the sensing area arranged on the shell of the mobile terminal corresponds to the position of the sensing antenna in the card body layer. The intelligent card and mobile terminal battery composite structure is simple in structure, convenient to carry and suitable for complex electromagnetic source interference environment.

A pressure drum used for water cleaning apparatus is composed of the butt connected upper semi-drum with water inlet and outlet and lower semi-drum with aerating inlet, a plastic membrane with circumference clamped between upper and lower semi-drum, and a surficial plastic layer formed by injection moulding. Its productive technology includes such steps as preparing upper and lower semi-drums and plastic membrane by respective injection moulding, assembling and preparing surficial plastic layer by injection moulding.

The invention discloses a shielding box, and the shielding box comprises a box body and a cover body. The main part of the box body is formed by the jointing of a plurality of enclosing plates and a plurality of sections. Moreover, the box body is provided with a first opening. The sections are provided with inset grooves which are matched with the edges of the enclosing plates. The enclosing plates are installed on the sections in a mode of enabling the edges of the enclosing plates to be inserted into the inset grooves, and the adjacent enclosing plates are assembly on the same section. According to the invention, the shielding box is divided into universal modules to form an assembly structure, and at least has the following advantages that 1, the design and machining and assembly technology meet the requirements of environment protection, energy-saving and emission reduction and lean production; 2, the shielding box employs a section structure, is simple and convenient in design and machining, and is easy to standardize; 3, the product design can serve for the customization of a standardized product and small diversified products quickly and conveniently; 4, the sections are employed for forming the frame structure of the shielding box, and the interlacing of the sections and the strengthening of angle beads guarantee the stability of the structure.

The invention discloses a prestressed reinforced membrane structural body and a combined type prestressed reinforced membrane structural body. The prestressed reinforced membrane structural body comprises a capsule body, a flexible reinforced framework and annular rigid components, wherein the content of the capsule body is a fluid, the annular rigid components are correspondingly arranged at theperiphery of the corresponding end parts of the capsule body, the flexible reinforced framework is arranged outside the capsule body, when the flexible reinforced framework comprises flexible cables,the flexible cables are arranged along the direction of a plain wire or a lead of the capsule body, or is wound around the periphery of the capsule body in a staggered manner, or is arranged in a mixed mode of the plain wire and the lead, the intersection points of the flexible cables arranged along the plain wire of the capsule body and the flexible cables wound around the periphery of the capsule body in the staggered mode are connected by using nodes capable of transmitting force, and the outline size of the capsule body filled with the fluid is larger than the outline size of the flexiblereinforced framework formed by the flexible cables, and when the flexible reinforced framework comprises flexible fiber cloth, the fiber cloth completely wraps around the capsule body. The prestressedreinforced membrane structural body and the combined type prestressed reinforced membrane structural body have the advantages of being light in weight, portable, convenient to install and uninstall,high in bearing capacity and rigidity and high in impact-resistant strength.

The invention discloses preparation and application of a stainless steel mesh-loaded and carbon-coated tin nanostructure as a negative electrode material for a sodium-ion battery. The preparation comprises the steps of dissolving sodium hydroxide into deionized water to obtain a solution A; adding tin chloride to the solution A to obtain a solution B; adding ammonium fluoride to the solution B toobtain a solution or an emulsion C; transferring the solution C to a hydrothermal reactor, putting a pre-cleaned stainless steel mesh into the solution C for hydrothermal reaction, cooling after reaction is ended, and drying at certain temperature to obtain a stainless steel mesh-loaded tin oxide nanostructure; putting the stainless steel mesh-loaded tin oxide nanostructure into an organic solution and reacting to obtain a stainless steel mesh-loaded and organic matter-coated tin oxide nanostructure; and putting the stainless steel mesh-loaded and organic matter-coated tin oxide nanostructureinto a tube furnace for reaction to obtain a stainless steel mesh-loaded and carbon-coated tin oxide nanostructure. According to the preparation and application of the stainless steel mesh-loaded andcarbon-coated tin nanostructure, the charge-discharge capacity, the rate capability and the cycle performance of the sodium-ion battery are improved.

The invention discloses a continuous polyester fabric padding and dyeing method free of a boiling and washing process. The method includes steps: step one, proportionally and uniformly mixing dispersedyes, water-absorbent resin, a polyester repair agent, an anionic surfactant, a color fixing agent and a moisture absorbent in softened water to obtain dyeing working solution; step two, subjecting polyester fiber fabrics to padding in the dyeing working solution prepared in the step 1; step three, after padding in the dyeing working solution, subjecting the polyester fiber fabrics to drying, baking and cropping at 140-220 DEG C to complete continuous dyeing of the polyester fiber fabrics. Technical process shortening and remarkable production efficiency improvement are realized, energy saving, consumption reduction, environmental friendliness and freeness of dyeing sewage discharging are realized, production cost of dyeing and printing enterprises is reduced while economic benefits are increased, and discharging of dyeing sewage is avoided.

The invention discloses non-quenched and non-tempered 980 MPa grade high-strength strapping steel and a production method thereof. The production method comprises work procedures of hot rolling, cooling, cold rolling and bluing. The non-quenched and non-tempered 980 MPa grade high-strength strapping steel is characterized in that chemical components of the non-quenched and non-tempered 980 MPa grade high-strength strapping steel comprise, by weight percentage, 0.17%-0.23% of C, 1.15%-1.35% of Mn, smaller than or equal to 0.35% of Si, smaller than or equal to 0.015% of S, smaller than or equal to 0.025% of P, larger than or equal to 0.015% of Als, smaller than or equal to 0.0060% of N and the balance iron and inevitable impurities. According to the method, medium low C is adopted, compared with conventional Mn component design, by means of control over a cooling path of the cooling work procedure, the partition of C in the phase change process of the steel is adjusted, medium temperature reeling is controlled, the pearlite transformation organization conversion is avoided, a ferrite bainite organization with the performance better than that of ferrite pearlite can be obtained, and ferrite bainite steel has high tensile strength, good uniform elongation performance and high n value. By means of the method, the high-strength strapping steel with the tensile strength larger than or equal to 980 Mpa and the elongation rate A30 larger than or equal to 10% can be obtained.

A process for preparing the dibasic alcohol (used to prepare unsaturated industrial resin) from glucitol includes such steps as hydrocatalytic cracking of glucitol in high-pressure reactor, dewatering the cracked product, fractionating in fractional tower, intercepting the fractions in some temp range, and mixing.

The invention discloses a preparation method of alkoxy-terminated polydimethylsiloxane, wherein the preparation method comprises the following steps: (1) mixing DMC and hexamethyldisiloxane, heating to 160-180 DEG C, dropwise adding phosphoric acid, stirring for 6-8 hours, and refluxing to remove water to obtain a silicon phosphate terminator; and (2) heating a linear body to 130-150 DEG C, adding a potassium hydroxide aqueous solution, stirring for condensation polymerization, monitoring the viscosity on line, adding the silicon phosphate terminator obtained in the step (1) before the target viscosity is reached, continuously reacting for 5-50 minutes, vacuumizing, carrying out reduced pressure distillation to remove low-boiling-point substances, and thus obtaining the alpha,omega-dihydroxy polydimethylsiloxane with different viscosities. By adopting the preparation method of the alkoxy-terminated polydimethylsiloxane with the structure, the prepared alkoxy-terminated polydimethylsiloxane has the advantages of high terminating efficiency, convenient production process and good storage stability.

The invention relates to a fuel pump (1), which in particular serves as a pump arrangement for fuel injection systems of air-compressing, self-igniting internal combustion engines, comprising at least one housing part (3), a first toothed wheel (15) and a second toothed wheel (16). The toothed wheels (15, 16) are arranged in the housing part (3). Furthermore, the toothed wheels (15, 16) intermesh in order to form a gear pump (17). The invention further relates to an inlet or return (35, 36) for the gear pump (17), which is provided in the housing part (3).

The invention relates to an electromagnetic shielding conductive connection device and method. The electromagnetic shielding conductive connection device comprises a heat shrink tube with an electromagnetic shielding conductive function. The heat shrink tube comprises, by weight, 90-100 parts of PVC resin, 4-6 parts of MBS resin, 20-40 parts of metallized graphite powder, 2-4 parts of ACR modifying agents, 1-3 parts of CPE, 7-9 parts of rare earth compound stabilizer, 0.4-0.6 part of stearic acid, and 0.4-0.6 part of liquid paraffin. The raw materials are proportionally mixed and kneaded, then compression, air exhaust, mixing, plasticization, extrusion and pelleting are carried out on the mixed and kneaded raw materials through a twin-screw extruding machine, and the palletized materials are put into a heat shrink tube extruding machine for production. The heat shrink tube can serve as a connector between a shielding layer of an audio / video signal line, a coaxial cable, a radio frequency line and other series of wires and cables and a metal plug, the heat shrink tube made of electromagnetic shielding conductive materials is arranged at a position which is between two conductive connecting objects and needs electric conduction in a sleeved mode, and then the shrink tube made of the electromagnetic shielding conductive materials shrinks by adopting instant high temperature, does not need any welding, is convenient and simple to use, and is high in applicability.

The invention discloses a preparation method of an oxygen vacancy lithium titanate composite material. The method comprises the steps of putting pure lithium titanate or metal element M-doped lithium titanate into a mixed gas of an organic gas and an inert gas, carrying out heat preservation at 700-1,000 DEG C for 5min to 24h, and cooling to obtain the oxygen vacancy lithium titanate composite material, wherein the metal element M is selected from at least one of iron, cobalt, nickel, molybdenum, zirconium, copper, zinc, magnesium, aluminum, silicon and rare earth element; the organic gas is at least one of alkane, olefin, alkyne or gaseous alcohol with seven or less carbon atoms; and the volume of the organic gas accounts for 5%-95% of the total volume of the mixed gas. The invention further discloses the oxygen vacancy lithium titanate composite material prepared by the method, and a lithium titanate battery adopting the oxygen vacancy lithium titanate composite material.

The invention provides a mask, which aims at solving the problems of multiple mask types and manual replacement in the existing sealant curing technique. The mask is formed by overlapping an X polarizer and a Y polarizer of which the polarization directions are mutually vertical, so as to obtain an overlapping area; the light rays are not allowed to penetrate through the overlapping area, but are allowed to penetrate through the areas outside the overlapping area. The mask has the advantages that by reasonably arranging the number of the X polarizer and the number of the Y polarizer, the overlapping area matched with a liquid crystal area is obtained; the liquid crystal area is completely covered by the overlapping area, and exposure light rays only cure the sealant outside the liquid crystal area; the mask is suitable for curing the sealants with different sizes, and the additional manufacturing of the sealant curing mask is not needed, so that the type and number of masks in the manufacturing process are reduced. The invention also provides equipment containing the mask, so that the manual operation is replaced, and the production efficiency is improved.

The invention discloses a method for synthesizing pyromellitic dianhydride through durene liquid-phase continuous oxygen-enriched precise oxidation in the technical field of organic chemical synthesis. The method comprises the following steps: firstly, proportioning and feeding: completely mixing durene, acetic acid and a cobalt-manganese-zinc-bromine catalyst according to the mass percent of (5-20%): (79.97-94.99%): (0.01-0.05%), and continuously pumping the mixed solution and oxygen-enriched gas into a micro-channel reactor for oxidation reaction; carrying out catalytic reaction to generate pyromellitic acid, and continuously discharging the generated reaction liquid rich in pyromellitic acid; then crystallizing and centrifuging, and removing acetic acid, water and the catalyst to obtain a filter cake, namely refined pyromellitic acid; and finally, dehydrating into anhydride to obtain the pyromellitic dianhydride. The method has the characteristics of high-speed mixing, efficient heat transfer, short reactant retention time, high conversion rate, no recrystallization or sublimation purification process, convenience in control, low oxidation reaction energy consumption, high safety coefficient, high reaction product purity and no amplification effect.

The invention belongs to the field of inductors, and particularly relates to an amorphous magnetic core vertical winding inductor. The amorphous magnetic core vertical winding inductor comprises an annular amorphous magnetic core and a flat coil, wherein the annular amorphous magnetic core is uniformly and vertically wound with the flat coil; the annular amorphous magnetic core comprises a protection box and an iron-based amorphous magnetic powder core arranged in the protection box; spaces between opposite sides of the iron-based amorphous magnetic powder core and the protection box are filled with organic resin; the annular amorphous magnetic core is constructed by combining at least two magnetic core segments; the magnetic core segments can also be bound together through a metal steel belt; and non-magnetic gaps are formed between adjacent magnetic core segments. Through adoption of the amorphous magnetic core vertical winding inductor provided by the invention, relatively large noise generated by the amorphous magnetic powder core during working under large current can be lowered effectively; meanwhile, the heat-dissipation effect of the inductor and the EMC (Electro Magnetic Compatibility) effect of a circuit can be improved; and automatic winding of the inductor is realized.