64results about How to "Reduce volume resistance" patented technology

A conducting fiber containing carbon nm tubes includes the following three components polyester, carbon nm tube and coupler with the weight ration of polyester 80-94.9, carbon nm tube 0.05-10, the coupler 0.05-10. The three components are prepared to conducting fibers via mix, extrusion and fiber spinning having the composite shapes of interlayer, sheath-core and island, characterizing in utilizing the fine conductivity of the carbon nm tubes and extremely length-diameter ratio to prepare conducting fibers, Special coupler is selected to strongthen the interaction of carbon nm tube and the polyerter to open the coacervates of the tube in the blend process by cutting.

The invention provides a silver conductive adhesive, comprising a basic resin, a curing agent, a curing accelerator, a conductive material and a solvent, wherein the basic resin is an epoxy resin including a bisphenol A epoxy resin and a gamma-butyrolactone modified epoxy resin, the curing agent is binary aliphatic ether amine and versamid, the curing accelerator is 2,4,6-tri-(dimethylaminomethyl)-phenol, and the conductive material is silver powder. The invention further provides a preparation method of the silver conductive adhesive. In the invention, the gamma-butyrolactone modified epoxy resin is introduced into the epoxy system silver conductive adhesive, and when the modified epoxy resin is cured, a polycyclic structure is subjected to ring-opening polymerization to result in volumetric expansion, by jointly applying the modified epoxy resin and the epoxy resin to the silver conductive adhesive, the prepared silver conductive adhesive has low shrinkage rate and low expansion rate as well as low volume resistance. The silver conductive adhesive prepared in the invention can be widely applied to various environments.

The present invention relates to a magnetic head substrate comprising a sintered body containing 35% by mass to 60% by mass of alumina and 40% by mass to 65% by mass of a conductive compound. The conductive compound contains at least one selected from carbide, nitride and carbonitride of tungsten. The sintered body has a maximum crystal particle size of 4 μm or less (except for 0 μm). Furthermore, the present invention provides a magnetic head provided with a slider formed of the magnetic head substrate and a recording medium driving device provided with the magnetic head.

The invention relates to a photosensitive compound, a solidifying film and a septum, which can form excellent pattern with size stability even if a thick solidifying film is obtained and will not decrease the volume resistance even if conductive materials like carbon are used as a shielding component. The photosensitive compound is characterized in that (i) photo-curing resin and/or photo-curing monomer and (ii) acrylic resin grains are the necessary components, wherein the average once grain size of the (ii) acrylic resin grains is 50 to 200 nm and the weight ratio of the (ii) acrylic resin grains to the (i) photo-curing resin and/or photo-curing monomer is 0.1 to 2.0. Besides, the photosensitive compound is applied to making the solidifying film and the septum.

The invention relates to a carbon nanotube modified polyvinyl akohol nano-fiber yarn and a preparing method thereof. A carbon nanotube and a certain amount of polyvinyl akohol are mixed in a dissolved mode, alchlor is used as a catalyst for Friedel-Crafts alkylation reaction, residual polyvinyl akohol and aluminium ions are eliminated through post-processing, and the carbon nanotube modified in a polyvinyl akohol grafting mode is obtained; the grafted carbon nanotube is dissolved in solvent, the grafted carbon nanotube and an appropriate amount of polyvinyl akohol are prepared into spinning stock solution, a carbon nanotube modified polyvinyl akohol nano-fiber parallel array is prepared through an electrostatic spinning process, and the fiber yarn is obtained in a twisted mode. According to the carbon nanotube modified polyvinyl akohol nano-fiber yarn and the preparing method thereof, the polyvinyl akohol and the carbon nanotube are combined through chemical bonds by means of Friedel-Crafts alkylation reaction, grafting efficiency of the carbon nanotube is obviously improved, dispersibility of the carbon nanotube in the solvent and stress transfer efficiency between the carbon nanotube and a polyvinyl akohol matrix are improved, and the nano-fiber yarn having excellent mechanical performance and conductive performance is prepared.

The invention relates to a kind of semiconduction mixture. Generate basic polymer by low-density polythene with 20-70 part by weight and other polyolefin polymer with 80-30 part by weight, and then cooperate semiconduction carbon black with 30-80 part by weight in this basic polymer with 100 part by weight.

Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.

Provided is a transparent conductive film used in liquid-crystal display devices, electroluminescent display devices, and the like, and is particularly suitable for use in solar cells. Also provided is a solar cell using said transparent conductive film and a sputtering target suited to forming said transparent conductive film. The provided transparent conductive film, which is highly moisture-resistant, comprises oxides of aluminum, magnesium, gallium, and zinc. Between 0.7% and 7% of the metal atoms in the transparent conductive film are aluminum, between 9.2% and 25% are magnesium, between 0.015% and 0.085% are gallium, and the remainder are zinc.

The invention discloses a pole seal material for lithium ion batteries and a preparation method of the pole seal material for the lithium ion batteries. Fluorous rubber serving as a main matrix and auxiliary materials including auxiliary rubber, conductive filler, processing auxiliary agents, a peroxide vulcanizing agent, an auxiliary cross-linking agent and the like are mixed through an open mixing mill or an internal mixing mill to obtain low-compression-set high-conductivity rubber composite material. Under the condition that low resistance and high electrolyte resistance are guaranteed, consumption of the conductive filler is decreased, and the composite material integrates low compression set and high conductivity. The material has excellent conductivity and compressive deformation characteristics, a volume resistance range is 10<2> omega cm-10<4> omega cm, and high-temperature compressive deformation is 30% or below (150 DEG C*70h). In addition, the material is excellent in physical and mechanical property, heat resistance, ageing resistance and electrolyte resistance and is quite suitable for conductive pole sealing of the lithium ion batteries.

A SAW device comprises a single crystal piezo-electric strate (made, for example, of LiTaO₃ or LiNbO₃), and an interdigital transducer (IDT) formed of a material mainly containing Al and disposed on the piezo-electric substrate. The piezo-electric strate contains an additive (for example, Fe, Mn, Cu, Ti), and an orientation rotated by an angle in a range of 42° to 48°re preferably 46°±0.3°) from a Y-axis toward a Z-axis about an axis. The IDT presents a normalized thickness h/λ (h: thickness electrode, and λ: spacing between digits of the IDT) of 7% to 11%. A more appropriate substrate cut angle can be shown for the device which employs a piezo-electric substrate containing an additive, to improve the electric characteristics thereof.

The invention relates to a composite coating type absorbing material and a preparation method thereof. The material comprises a carrier part and a coating part. The carrier part comprises 50-90wt% of polymer and 10-50wt% of bamboo carbon nanotube; and the coating part comprises but not be limited to the following ingredients: 30-80wt% of paint, 5-30wt% of modified nano bamboo carbon, and 5-42wt% of manganese-nickel-ferrite. The material can be used in the industries of military, communication and the like, with improving the performance of weapon and eliminating the damage of radiation (e.g. cellular radiation) to human health.

The invention belongs to the technical field of electric connectors and particularly relates to a crown spring mounting structure with good restriction and convenient disassembly. The crown spring mounting structure includes a crown spring and a sleeve. Elastic folding plates are uniformly distributed on the outer circumferential surfaces of the two ends of the crown spring. A plurality of throughholes are uniformly arranged on the cylinder surfaces of the two ends of the sleeve. The elastic folding plates are disposed in the through holes and have opposite folding directions. The free ends of the elastic folding plates are abutted against the walls of the through holes. The crown spring mounting structure has the beneficial effects that the axial displacement and the circumferential displacement of the crown spring in the sleeve can be avoided, the connection structure of the crown spring and the sleeve is firmly installed, which is convenient for charging connection; regardless of the diameter of the crown spring, the crown spring is convenient to disassemble and convenient to be taken out of the sleeve, thereby contributing to the maintenance of the crown spring; when the crownspring is maintained, the replacement of the connection structure of the sleeve and the crown spring can be avoided and the maintenance cost is saved.

The invention provides an antistatic protective film which comprises a stripping layer, a silica gel layer compounded on the stripping layer, a UV (Ultraviolet) layer compounded on the silica gel layer, a substrate layer compounded on the UV layer, an acrylic adhesive layer compounded on the substrate layer and a release layer compounded on the acrylic adhesive layer; the UV layer is made of a material comprising an acrylic monomer, a prepolymer, a photoinitiator and an antistatic agent. The UV layer is formed after the antistatic agent is mixed with a UV adhesive, can achieve an antistatic effect through reducing the volume resistance of the material, is less affected by environmental humidity and also has less influences on the performance of the protective film self. In addition, even if an outermost layer is not coated with the UV layer in the antistatic protective film, a better antistatic effect can also be achieved. Experimental results show that the surface resistance of the protective film provided by the invention can reach 109 ohms. The invention further provides a preparation meted of the antistatic protective film.

A display device and a method of manufacturing the same are disclosed. The display device comprises a thin film transistor on a substrate, a protective film on the thin film transistor, and an alignment film on the protective film. The protective film includes one or more protective films, and a protective film adjacent to the alignment film among the one or more protective films has a silicon content higher than a nitrogen content. Thus, it is possible to provide a display device capable of reducing image sticking or flicker.

A preparing method of antibacterial polypropylene resin powder used for selective laser sintering is provided. The method includes a) dissolving polypropylene resin to an alkane organic solvent at a heating temperature to obtain a polypropylene resin solution, b) cooling the polypropylene resin solution prepared in the step a) to allow a solid precipitate to precipitate out, and c) adding auxiliary agents into a solid liquid mixture obtained in the step b), then fully mixing the mixture, and drying the mixture to obtain the power, wherein the auxiliary agents comprise an antibacterial agent, an antioxidant and a powder separating agent. The method is simple and easy to operate. A sintering raw material having excellent processing performance is provided for selective laser sintering, and a novel direction is provided for processing and application of functional polypropylene resin. The invention further provides the antibacterial polypropylene resin powder prepared by the method and a selective laser sintering method adopting the antibacterial polypropylene resin powder as a sintering powder raw material.

The invention provides a preparation method of a glass fiber reinforced polypropylene resin powder for selective laser sintering. The method includes the steps of: a) at a heating temperature, dissolving polypropylene resin in an alkane organic solvent to obtain a polypropylene resin solution; b) cooling the polypropylene resin solution obtained by step a) to make solid precipitate out; c) adding assistants into the solid-liquid mixture obtained by step b), mixing the substances evenly, and performing drying so as to obtain the powder, wherein the assistants include ultra-short glass fiber, an antioxidant and a powder separant. The method has the characteristics of simple operation and easy operation, not only provides the sintering raw material with excellent processing properties for selective laser sintering, but also provides a new direction for processing and application of functional polypropylene resin. The invention further provides the glass fiber reinforced polypropylene resin powder prepared according to the method and a selective laser sintering method adopting the glass fiber reinforced polypropylene resin powder as the sintering powder raw material.