1528 results about "Electronic industry" patented technology

A bond matrix for metal bonded abrasive tools includes a metal bond system, porosity and an optional filler. Tools according to embodiments of the invention exhibit long tool life, produce an acceptable quality of cut and can have self-dressing properties. The bond matrix can be used, for example, in abrasives tools configured for the electronics industry, such as 1A8 wheels for slicing ball grid arrays (BGAs) and other such slicing operations.

The invention provides a method for preparing a graphene-carbon nano tube hybrid composite and relates to a method for preparing a functional high molecular material and a device thereof. The method comprises the following steps of: carrying out the stirring and sonic oscillation treatment on graphene and carbon nano tubes to preform an entangled network structure, thoroughly mixing the entangled network structure and polymer particles, and thus obtaining an uniformly-mixed system in which the graphene-carbon nano tube network is coated on the surfaces of the polymer particles after removing the solvent; and putting the uniformly-mixed system in a mould, hot-compacting, and obtaining the graphene-carbon nano tube hybrid composite after cooling and demoulding. By mingling the graphene and the carbon nano tubes in advance to form the communicated network structure, the method realizes the advantage complementation of the graphene and carbon nano tube structures and enables the hybrid composite to have favorable electric conduction and heat conduction properties. The method can be widely used in the fields such as aviation, transportation and communication, electronic industry, civil facilities, construction, chemical industry and the like, can be produced in the industrial scale, and has the advantages of low cost and environmental friendliness.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The integrated devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The arrays and methods of the invention make use of silicon chip fabrication and manufacturing techniques developed for the electronics industry and highly suited for miniaturization and high throughput.

The fire retardant PC/ABS alloy material without halide and phosphate consists of polycarbonate 65.5-91.2 wt%, acrylonitrile-butadiene-styrene ternary copolymer 6-17 wt%, compatilizer 1.0-4.0 wt%, fire retardant PTFE 0.3-1.5 wt%, organosilicon fire retardant 1.0-8.0 wt%, diphenyl sulfone sulfonate 0.1-1.0 wt%, antioxidant 0.1-1.0 wt% and lubricant 0.2-2.0 wt%. The present invention also provides the preparation process of the alloy material. The alloy material is environment friendly, and may be applied widely in automobile industry, electronic industry, electric industry and mechanical industry.

In addition to health implications, trihalomethanes (THMs) poses a challenge to the electronic industry where such impurities cannot be tolerated. A process is provided for removing THMs from high-purity water used in the electronic industry. The method of the invention comprises contacting the high-purity water with a membrane degassifier, preferably operating at a temperature exceeding 45° C.

High purity water, particularly that intended for the pharmaceutical or electronics industry, is analyzed for the presence of pyrogen or other impurities by causing the water to come into contact with a direct affinity sensor, which may be a surface plasmon resonance (SPR) device or other sensor relying on an evanescent wave phenomenon. A property of the surface-refractive index in the case of SPR-changes on the binding of impurity, thereby enabling impurity to be detected. The invention overcomes the cumbersome nature and batch-to-batch variability of the conventional in vivo tests as well as the in vitro Limulus Amoebocyte Lysate (LAL) assay and for the first time allows the continuous or real time monitoring of high purity water for pyrogen.

The invention relates to a tungsten alloy composite coating material and a manufacture method. The tungsten alloy composite coating material is a multi-phase composite structure material composed of a tungsten alloy and a large number of particles or fibers dispersed in the tungsten alloy. The tungsten alloy composite coating contains tungsten of 5 to 98wt% and particles or fibers of 0.05 to 80wt%, and the diameter of the particle or the fiber is 3nm to 5 micrometer. The coating has low internal stress, excellent normal-temperature and high-temperature hardness and abrasion resistance, excellent high-temperature oxidization resistance and excellent corrosion resistance. The tungsten alloy composite coating has important use in machinery industry, chemical and medicine industry, metallurgy industry, aerospace industry, weapons and ammunitions, petroleum exploitation, mining industry, electronic industry, etc, and is particularly suitable for the occasions with high-temperature strength and high corrosion resistance.

The invention discloses a graphene reinforced lead-free solder, which comprises, by weight parts, graphene and lead-free solder base body of the ratio of 0.75-1.75:50000. The preparation method includes: by means of process of powder metallurgy, disposing the graphene into absolute ethyl alcohol according to proportion, vibrating ultrasonically, milling and drying the absolute ethyl alcohol with the graphene, mixing and stirring the absolute ethyl alcohol and the lead-free solder base body, pressing the same into a blank, sintering the blank at the temperature of 175 DEG C under the protective atmosphere of high-purity argon, extruding the same into a bar with the diameter of 6mm, and preparing the graphene reinforced lead-free solder. The graphene reinforced lead-free solder can meet the requirements of environmental protection and reliable welding, substitutes for conventional stannum-lead solder, has higher and more reliable mechanical performance than lead-free solder in the prior art, can be used as connection materials for oversized integrated circuits and is a composite material according with development trends of the modern electronic industry.

The invention relates to an ultraviolet crosslinking and curing EVA (ethylene vinyl acetate copolymer) optical adhesive film and a preparation method thereof. The ultraviolet crosslinking and curing EVA optical adhesive film takes EVA or a mixture of the EVA and an EVA-modified graft polymer as a base material; in the mixture, the weight ratio of the EVA to the EVA-modified graft polymer is 1: 0-0.2; and according to 100 parts of the of the base material by total weight, the EVA optical adhesive film further comprises the following raw materials in part by weight: 0.1-5 parts of photoinitiator, 0.1-5 parts of multifunctional crosslinking agent, 0.1-1 part of antioxidant, 0.1-1 part of light stabilizer, 0.1-2 parts of coupling agent and 0.1-10 parts of bonding resin. The preparation method is short in operating time, small in required equipment investment, simple in process, convenient in operation and maintenance, energy-saving, environment-friendly and high in production efficiency; the production cost is reduced; the ultraviolet crosslinking and curing EVA optical adhesive film is low in defective ratio and excellent in mechanical properties; and during use, the ultraviolet crosslinking and curing EVA optical adhesive film can be crosslinked and adhered through radiation of specific ultraviolet, so that optical adhesive OCA and liquid optical adhesive LOCA for adhering a display in the traditional electronic industry can be replaced.

The invention relates to heat and flame resistant nylon composite belonging to the filed of the electrical and electronic material. The heat and flame resistant nylon composite is characterized by comprising phosphorus flame retardant, nitrogen flame retardant, inorganic synergist, filler and auxiliary agent facilitating the processing and stabilizing. Due to the synergistic effect of the phosphorus flame retardant, the nitrogen flame retardant and the inorganic synergist, the nylon has the flame resistance, mains the mechanical performance, the thermal performance and the electrical insulating performance and can pass the test of the glow wire at 850 DEG C, and the problems that the defect of the nylon product is increased and the mechanical performance and the electrical insulating performance of the nylon produce are decreased due to the large consumption of the phosphorus flame retardant are solved. The heat and flame resistant nylon composite has good flame resistance, mechanical performance, thermal performance and electrical insulating performance and is mainly applied to the electrical and electronic industry.

The invention relates to an aluminium ion battery and a preparation method thereof and belongs to the field of aluminium ion batteries and preparation thereof. The aluminium ion battery comprises a positive electrode, a negative electrode and an aluminium ion electrolyte, wherein the positive electrode is made of transition metal oxide; the negative electrode is made of high purity aluminium; the battery comprises a diaphragm material when the aluminium ion electrolyte is in a liquid state. Since abundant aluminium elements are stored, the cost for the ion battery is greatly reduced; the safety performance is improved; the transition metal oxide is applicable to hypervalent ion batteries due to relative stability under the variable valence states and different valence states. The ion liquid serves as the electrolyte for the hypervalent ion battery, so that aluminium ion is high in conductivity, good in heat stability, broad in electrochemical window and high in chemical stability and almost incapable of reacting with the positive electrode materials, the negative electrode materials, a current collector, a binder and a diaphragm in a battery system and capable of maintaining the liquid state in a board temperature range. The aluminium ion battery can be applied to various fields, such as electronic industries, communication industries and electric vehicles and the like.

The electronic industrial glass cleaning agent composition belongs to the field of electronic industrial cleaning technology. The cleaning agent consists of sodium metasilicate, sodium hydroxide, sodium carbonate, sodium bicarbonate, Pluronic polyol, CMC, fluoric surfactant, complexing agent, defoaming agent and deionized water. It is used to clean substrate glass and coated conducting glass. During the cleaning, the cleaning agent in 1-5 % is compounded with deionized water in 95-99 % to compound the cleaning liquid for showering or ultrasonic cleaning to eliminate pollutant on glass fastcompletely. It is used to replace strong acid and strong alkali cleaning agent and has no damage to glass surface and no corrosion to ITO film. The cleaning agent has no bad smell, no toxicity and no corrosion, and is safe, reliable, environment friendly and low in cost.

The invention relates to a preparation method of multidimensional hybrid composite of glass fibre/ grapheme-carbon nano tube/ epoxy resin. In the method, after grapheme-carbon nano tube network structure is subjected to surface carboxylation, diamine or polyamine is introduced on the grapheme-carbon nano tube network structure; the grapheme-carbon nano tube connected with the amino is modified by micromolecule aromatic polybasic anhydride compound to prepare the carbon nano tube carried with an anhydride group; the grapheme-carbon nano tube is dispersed in the epoxy resin matrix by ultrasonic oscillation and high-speed stirring; organic acid anhydride curing agent is adopted for curing; and the obtained epoxy resin polymer containing the grapheme-carbon nano tube serves as the matrix to be compounded with glass fiber processed by silane coupling agent to form a multifunctional hybrid composite structure connected by covalent bonds. The multidimensional hybrid composite is convenient to prepare, the application range of the glass fiber, the grapheme, the carbon nano tube and the epoxy resin is widened, so that the hybrid composite can be widely applied on the aspects of aerospace, traffic transportation, electronic industry, civil facilities, building, chemical engineering and the like, can be industrially produced on a large scale, has low cost and is friendly to environment.

The present invention discloses a ultra-thin glass automatic slicing system and comprises a glass transmission branch, a clean transportation robot and a packing box fixed turnover unit as well as a glass centering positioning unit, a packing box transmission positioning unit, a packing box moving turnover unit and a septum paper supplying unit. A glass transmission main line is vertical to the glass transmission branch and the glass centering positioning unit is arranged above and below the glass transmission branch; two packing box transmission positioning units are arranged in parallel with the glass transmission branch, wherein, the terminal of the packing box transmission positioning unit arranged close to the glass transmission branch is provided with the packing box fixed turnover unit; the terminal of the packing box transmission positioning unit far away from the glass transmission branch is provided with the packing box moving turnover unit; the septum paper supplying unit is arranged in parallel to the packing box transmission positioning unit; the present invention can meet the quality standard of glass in electronic industry and packing requirement of ultra-thin glass storage and transmission at the same time, and improve yield and packing quality of ultra-thin float glass.

The invention belongs to the high molecular material technical field, and in particular relates to a preparation method of halogen-free fire-retarding poly lactic acid. The preparation method comprises the following steps: firstly, fire retardant, fire-retarding auxiliary agent and antioxidant are stirred according to a certain proportion to obtain fire-retarding mixture; then, poly lactic acid, the fire-retarding mixture, compatibilizer and coupling agent are mixed according to a certain proportion and are fused and mixed; and finally, the materials are made into fire-retarding poly lactic acid after cooling, pelleting and drying. The fire-retarding poly lactic acid, which has excellent fire-retarding performance and less fused dripping and can pass UL94 grade testing, can be used in fields such as airplane, automobile and electronic industry, which have strict requirements on material fire-retarding performance.

A preparation method of high-dispersion ultra-fine spherical silver powder used for conductive silver paste relates to a preparation method of ultra-fine spherical silver powder, in particular to the preparation method of the high-dispersion ultra-fine spherical silver powder for the conductive silver paste in the electronic industry. The preparation method is characterized in that silver ammonia solution is dropped in a reduction system which consists of a reducing agent of formaldehyde, a dispersant of polyvinyl alcohol PVA and sodium hydroxide solution, thus obtaining high-dispersion ultra-fine silver powder slurry, and the high-dispersion ultra-fine spherical silver powder with the particle size range of 0.3 to 1.0Mum can be obtained by solid-liquid separation and drying. The method of the invention has simple and feasible process flow, low production cost, less equipment investment, stable and reliable process conditions, small particle size of the product silver powder, narrow distribution range, high yield and easy realization of industrial mass production.

The invention discloses a method for producing a thin-wall metal circular ring, which comprises the steps of deep-drawing, punching, turning up, shaping and blanking plate materials or strip-shaped materials on a grading stamping mould. The grading stamping mould used for implementing the method mainly comprises an upper mould part and a lower mould part, wherein a deep-drawing male mould, a punching male mould, a turning-up male mould, a shaping male mould and a blanking male mould are arranged on the upper mould part sequentially; the male moulds all pass through a discharging plate; an annular convex part is arranged on the part, which surrounds the shaping male part, of the discharging plate; a deep-drawing female mould, a punching female mould, a turning-up female mould, a shaping female mould and a blanking female mould are arranged on the lower mould part sequentially; and spring-ejecting parts are arranged in the cavities of the deep-drawing female mould, the turning-up female mould and the shaping female mould. The method solves the technical problems of low processing precision and low production efficiency of the metal circular ring with two straight end faces. The method has a simple structure and is widely applied to the production manufacturing industry of the metal circular ring in electronic industry.

The preparation process of nano gold particle material includes the following steps: preparing mixed water solution of HAuCl4, protecting agent and acetone in the weight ratio of 1 to 10-10000 to 100-1500, with the protecting agent being one of polyglycol, PVA and PVP; and irradiating the mixed water solution with ultraviolet ray of wavelength 254-400 nm to complete the reduction reaction to obtain nano gold particle. The said technological process is simple, and can produce pure nano gold particle with controllable size and narrow size distribution range. The produced nano gold particle may be used in biomedicine, electronic industry and fine chemical industry.

The invention discloses a kind withdraws golden, the silver, the arrowhead used in ancient times technique from the electronics industry waste residue, he solved the organic matter to withdraw the process to the precious metal the disturbance, realized the minute using the hydrometallurgy technology step to withdraw golden, the silver, the arrowhead used in ancient times goal. The technique has the operating environment well, the cost is inexpensive, the precious metal first experience higher merit which withdraws.

The invention belongs to the technical field of epoxy resin adhesives, and particularly discloses a single-component epoxy resin conductive silver adhesive composition and a preparation method thereof. The composition contains the following components in parts by weight: 10-25 parts of epoxy resin, 1-5 parts of diluter, 0.5-3 parts of toughening agent, 0.5-3 parts of enhancer, 0.5-3 parts of solvent, 0.5-3 parts of coupling agent, 0.5-3 parts of anti-aging agent, 1-5 parts of curing agent, 0.2-1 part of accelerator and 30-35 parts of silver powder. The preparation method of the composition comprises the following steps: thoroughly and uniformly mixing all the components except silver powder at 20-35 DEG C, adding the silver powder, thoroughly and uniformly mixing, and carrying out vacuum degassing under stirring conditions to obtain the finished epoxy resin conductive adhesive composition product. The composition has the advantages of low viscosity, favorable condensate strength, high adhesive force, low volume resistivity, high heat conductivity, long shelf life, favorable long-term weather resistance and stable electric properties, and can be widely used in electronic industry and other conductive adhesive industries.

The invention belongs to the high molecular material modification technical field, and in particular relates to a preparation method of natural fiber/poly lactic acid composite material with fire-retarding performance. The preparation method comprises the following steps: the surface modification and the fire-retarding modification of natural fiber are completed to improve the interface combination degree and the fire-retarding performance between the natural fiber and a poly lactic acid matrix; and then, the modified natural fiber is combined with poly lactic acid and fire retardant, thereby obtaining natural fiber-reinforced poly lactic acid composite material with excellent fire-retarding performance, mechanical property and full biodegradation. The poly lactic acid composite material, which can pass the fire-retarding testing in accordance with the standards of Federal Aviation Administration (FAA) and UL94V-O grade testing, can be used in fields such as airplane, automobile and electronic industry, which have strict requirements on material fire-retarding performance and mechanical property.

A high-strength, high-conductivity and high-extensibility rare earth copper alloy and a preparation method thereof are disclosed. The alloy is composed of following components in percentage by weight: 0.5 to 1.5% of chromium, 0.3 to 0.5% of zirconium, 0.1 to 0.3% of nickel, 0.2 to 0.5% of titanium, 0.2 to 0.4% of manganese, 0.02 to 0.15% of rare earth elements and the balance of copper and inevitable impurity elements, wherein the rare earth elements are one or two elements of erbium and lanthanum. The preparation method comprises following steps: preparing intermediate alloy, smelting, moulding, casting, treating solid solution, drawing to deform, performing an aging treatment, and a cold rolling treatment. The components and the ratio of the components are limited to let each component have a combined action, thus the comprehensive properties of the alloy material are prominently improved: the extension strength is larger than 630 MPa, the hardness is larger than 190 HV, the ductility is larger than 10%, the conductivity is larger than 80%IACS, and the softening temperature is larger than 520 DEG C; and the rare earth copper alloy can satisfy the requirements of materials in the electronic industry such as lead frame on copper alloy performances.

The invention discloses a dynamic vulcanized fluoroplastic/fluororubber/silicon rubber thermoplastic elastomer and a preparation method thereof. The thermoplastic elastomer comprises the following raw materials in parts by mass: 10-80 parts of fluoroplastic, 5-80 parts of fluororubber, 5-85 parts of silicone rubber, 1-10 parts of acid acceptor, 1-20 parts of interfacial modifier, 0.1-5 parts of cross-linking agent and 0.1-10 parts of cross-linking aid. The preparation method comprises the following steps of: uniformly mixing the fluoroplastic, the fluororubber, the acid acceptor, the silicon rubber and the interfacial modifier at 175-330 DEG C; and adding the cross-linking agent and the cross-linking aid under a high-speed shear condition to carry out dynamic vulcanization on rubber to obtain the thermoplastic elastomer. The fluoroplastic/fluororubber/silicon rubber thermoplastic elastomer has high mechanical strength, has the characteristics of excellent high-temperature and low-temperature resistance, chemical resistance, oil resistance, capability of repeated processing and the like and can be widely applied to the fields of aerospace industry, automobile industry, information and electronics industry, chemical industry, new energy resources, electric power industry, environmental protection and the like.