132results about How to "Avoid conductive properties" patented technology

The invention relates to the field of lithium ion battery electrode materials, in particular to a graphene-coated silicon nanoparticle with a novel structure, and a preparation method thereof. The graphene-coated silicon nanoparticle is characterized by being formed by a reduced graphene oxide/carbon shell coating an outer layer, a silicon nanoparticle core located in the reduced graphene oxide/carbon shell, and a cavity layer between the reduced graphene oxide/carbon shell and the silicon nanoparticle core. Compared with the prior art, according to the graphene-coated silicon nanoparticle provided by the invention, the thickness of a surface oxidation layer of a silicon particle is easy to control; surface oxidation silicon powder is dispersed in a solvent easily, and hydroxy on the surface of the particle enables the particle to be combined with a modifier easily; graphene coating the particle surface helps increase electric contact between particles as well as between the particle and a current collector, and is beneficial for electron transfer in a composite material to reduce impedance; carbon produced through high-temperature pyrolyzing of a modifier carbon chain and graphene jointly form a shell with a certain strength, and a stable SEI can be formed favorably.

The invention relates to thermal conduction potting silica gel based on a phase-changing microcapsule and a preparation method of the thermal conduction potting silica gel. The thermal conduction potting silica gel is prepared from the following components by mass percent: 50 to 90 percent of dual-component potting silica gel, 5 to 25 percent of phase-changing microcapsules and 5 to 25 percent ofsurface-treated thermal conduction filler. The preparation method comprises the following steps: treating the surface of the thermal conduction filler; preparing the thermal conduction composite filler; preparing a component A and a component B in the dual-component potting silica gel; preparing a component A1 and a component B1 in the thermal conduction potting silica gel; and preparing the thermal conduction potting silica gel. According to the preparation method, the surface treatment is performed on the thermal conduction filler in the preparation process, so that the dispersity of the thermal conduction filler in a silica gel matrix is improved, and the thermal conduction performance of the thermal conduction potting silica gel is improved; and by adding the phase-changing microcapsule, the thermal conduction potting silica gel has the heat-storage temperature control performance. The thermal conduction potting silica gel has good thermal conduction performance and heat-storage temperature control performance.

The invention relates to a novel manufacturing method of a planar spiral inductor. Manufacturing of the planar spiral inductor is carried out through a glass or quartz substrate; manufacturing of the planar spiral inductor is achieved by an MEMS technology which comprises a metal thin film deposition process, a dielectric layer thin film deposition technology, a thick metal layer plating process, a thick resist lithography process, an etching process and the like; the planar spiral inductor and the substrate do not need to be isolated by a thick insulating layer; and the plane shape of the planar spiral inductor and the thickness of a coil are not limited. Manufacturing of the planar spiral inductor is achieved by the MEMS technology on the glass or quartz substrate; the coupling effect and the skin effect between the coil and the substrate at a high frequency are avoided; a high Q-value inductor can be achieved; meanwhile, the thickness of a metal layer of an inductance coil is not limited; and the loss of the coil is low. The technology is simple; the requirements of multiple fields of a signal isolator, a planar antenna, a microwave baseband line, a planar spiral inductor resonator and the like can be met; and the process difficulty is reduced.

The invention relates to a resistance chromatography imager based on micro electrode, and relative micro-cut measurement, wherein it uses micro electrode to span the horny layer with high resistance; it can replace traditional surface electrode, to be used as current activator and sensor to sense voltage signal; the measured signal via magnification and filter is input into PC to be processed and displayed via gray diagram or colorful diagram, to represent the resistance distribution. The invention can reduce the effect of skin resistance in current activation and voltage signal collection, with high signal-noise ratio and reduced error, to improve the calculation accuracy and image resolution.

The invention relates to a portable electrocardio electrode plate which comprises a plurality of electrode plates, wherein the electrode plates are arranged in a broken line shape and connected with one another sequentially; the broken line shape is specifically a Z shape of which the included angle is an obtuse angle; and the electrode plates are connected through silica gel. The portable electrocardio electrode plate also comprises electrode plates of at least three monomers. The electrode plates are fixedly connected, so that during use, electrodes do not need to be fixed one by one, and the positions of the six electrode plates can be fixed accurately only by fixing the positions of two or three of the electrode plates according to the positions. The portable electrocardio electrode plate is convenient to use and simple to operate; patients who do not know the principles of medical science can perform electrocardio measurement in short time; the portable electrocardio electrode plate has a small size and is convenient for families to use; and the backing of the electrode plate adopts 20-degree medical silica gel, so foreign body sensation is avoided with the portable electrocardio electrode plate is worn and the portable electrocardio electrode plate is convenient to adhere and tear down.

The invention belongs to the field of mobile communication, and relates to a wireless communication module, in particular to a high-performance small-sized module of a code division multiple access (CDMA) evolution-data optimized (EV-DO) mobile terminal. The small-sized module is applicable to a third generation (3G) user terminal. The wireless communication module is characterized in that: board-level connection is carried out by ball grid array (BGA) package; the level of integration is high; the size is small; good electrical performance and an external interface function are realized; and requirements of a customer can be well met. The wireless communication module comprises a radio frequency front end, a transmitting and receiving channel, a base band processing part, a memory and a power manager, wherein the base band processing part and the radio frequency front end are placed on a top layer of a circuit board; a shielding cover is arranged on the top layer to guarantee an excellent electromagnetic compatibility function of the module; the memory is placed on a bottom layer of the circuit board; and the bottom layer adopts an advanced BGA technology to guarantee reliable connection during the application of the module.

The invention relates to a carbon fiber bilayer plastic wrapped steel rope specially used for an elevator and belongs to the technical field of elevators. The carbon fiber bilayer plastic wrapped steel rope specially used for the elevator is provided with a carbon fiber rope core, wherein a synthetic plastic inner protective layer is wrapped outside the carbon fiber rope core; a suction disc which is densely covered by ranks of micro ridges and slots is wrapped outside the inner protective layer; a braided steel wire rope is arranged outside the suction disc, and a synthetic plastic shell is extruded and wrapped outside the steel wire rope. The carbon fiber bilayer plastic wrapped steel rope disclosed by the invention has a scientific and reasonable structure; an intermediate sizing rope core adopts a carbon fiber plastic wrapped rope; a plastic wrapped surface imitates the mode of the suction disc of a wall gecko, and the suction disc which is densely covered by ranks of micro ridges and slots is arranged, so as to enhance the binding ability of the carbon fiber bilayer plastic wrapped steel rope with other materials; the shell is wrapped by the synthetic plastic; and the tensile strength of the carbon fiber resin composite material is 3500MPa or above and is 7-9 times that of a steel wire while the weight of the carbon fiber resin composite material is one fourth of the weight of the steel wire of the same class, thus the carbon fiber bilayer plastic wrapped steel rope disclosed by the invention has a prospect in application of the elevator and is a replacement product of an elevator hoisting rope.

The invention provides a light emitting diode display device and a manufacturing method thereof. The light emitting diode display device includes a substrate, at least a first connecting pad and at least a second connecting pad, at least one spacer, at least one light emitting diode, and a conductive adhesive layer. The first connecting pad and the second connecting pad are disposed on the substrate. The spacer is located between the first connecting pad and the second connecting pad, wherein the height of the spacer is P. The light emitting diode is disposed on the substrate and includes a first electrode and a second electrode. The first electrode and the second electrode are on the same side and heights are H. The conductive adhesive layer is disposed on the substrate and is located between the substrate and the light emitting diode. The conductive adhesive layer includes a plurality of conductive particles, wherein the first electrode and the second electrode of the light emittingdiode are respectively electrically connected with the first connecting pad and the second connecting pad of the substrate through the plurality of conductive particles, and H+3.5>=P>=H+0.48.

The invention relates to a palladium nanoparticle/carbon nanofiber compound, a preparation method and an application thereof in electrocatalysis. The compound is directly prepared by a one-step electrospinning method. An electrode modified by the compound is used for direct eectrochemical detection on hydrogen peroxide, beta-nicotinamide adenine dinucleotide, dopamine, ascorbic acid and lithic acid. The electrode modified by the compound has the linear range from 0.2 micrometer to 20 millimetres and the detection limit of 0.2 micrometer when being used for the detection on the hydrogen peroxide and has the linear range of 0.2-716.6 micrometers and the detection limit of 0.2 micrometer when being used for the detection on the beta- nicotinamide adenine dinucleotide; and the peak-peak potential differences between the ascorbic acid and the dopamine, the dopamine and the lithic acid as well as the ascorbic acid and the lithic acid are respectively 244mV, 148 mV and 392 mV, thereby showingthat the modified electrode can be used for simultaneous eectrochemical detection of three substances. The compound can be used in the fields of catalysis, fuel cells and sensing.

The invention discloses a flow battery negative electrolyte solution sealing system and a flow battery system. The flow battery negative electrolyte solution sealing system comprises: an organic matter layer disposed on the negative electrolyte solution in a negative storage tank; a first pipeline connected to the negative electrolyte solution outlet of an electric pile and the negative storage tank, with one end of the first pipeline connected to the negative electrolyte solution outlet of the electric pile and the other end placed in the negative electrolyte solution; and a second pipeline connected to the negative storage tank and the negative electrolyte solution inlet of the electric pile. According to the invention, the organic matter layer is disposed on the negative electrolyte solution in the negative storage tank, and liquid state organic molecules have good fluidity and air tightness, thus ensuring good air isolation effect of the negative electrolyte solution to air, and the negative storage tank and a positive storage tank are connected by pipelines, thus ensuring the negative electrolyte solution in a safe liquid level state. Also compared with common flow battery systems, the capacity fading speed is reduced, and the flow battery system provided by the invention has good operation safety and stability.

The invention relates to a titanium-based tin-antimony-platinum oxide electrode material and a preparation method thereof. The preparation method comprises the steps of pretreating a titanium matrix, plating tin, coating an active layer and sintering, wherein the active layer is antimony-platinum coating liquid; and the constitution of the antimony-platinum coating liquid is characterized in thatSbCl3:H2PtCl6.6H2O:36wt% HCl:n-butyl alcohol=0.1g:(0.01-0.03g):1ml:5ml. A titanium-based tin-antimony-platinum oxide electrode provided by the invention has high oxygen evolution potential and is suitable for the treatment of organic waste water which is difficult to degrade; meanwhile, the electrode can be used for better catalyzing the reaction for generating apersulfate radical (S2O8<2->) froma sulfate radical (SO4<2->); and under the condition of same power consumption and same electrolyte, the output of S2O8<2-> is 30-35% higher than that of the titanium-based tin-antimony (Ti/Sn-Sb) oxide electrode.

The invention discloses a graphene electricity and heat conductive coating and a preparation method thereof. The graphene electricity and heat conductive coating is composed of the following components in parts by weight: 1-10 parts of graphene, 2-5 parts of carbon nano tubes, 2-5 parts of sodium silicate, 1-3 parts of paint oil, 1-3 parts of tung oil, 0.3-1.5 parts of maleic anhydride, 3-5 partsof a dispersing agent, 1-3 parts of acrylic resin, 0.05-0.5 part of a composite drier, 1-3 parts of a coupling agent, 0.2-1 part of silicon dioxide, 0.2-1 part of a composite additive, 0.5-2 parts ofmodified cellulose, 1.5-2 parts of zeolite powder, 1-8 parts of heat-conducting metal powder and 40-60 parts of ethanol. The graphene electricity and heat conductive coating prepared by spraying and printing can be applied to the fields of semiconductor materials, conductive and heat-conducting composite materials and the like, and has relatively strong application value.

The invention relates to a graphene/cyanate composite material and a preparation method and application thereof. The preparation method includes: mixing the graphene, graphene nanoplatelets and pi-pi small conjugate molecules with deionized water prior to performing primary dispersion; pouring a water solution to an ice bath cooled ultrasonic cell disruptor, pouring obtained dispersion liquid in liquid nitrogen for quick cooling, placing the mixture in a freeze dryer after complete freezing, and dewatering to obtain the foamed and pre-dispersed graphene/graphene nanoplatelets; finally, mixing the foamed graphene-graphene nanoplatelets with cyanate ester resin to obtain the graphene/cyanate composite material through stirring, grinding and stripping. The graphene/graphene nanoplatelets are well dispersed in the cyanate ester resin, conductivity, thermal conductivity and mechanical property are improved under low content and low viscosity, thermal expansion coefficient is lowered, and the graphene/cyanate composite material can be applied to composite components of electricity conductivity, thermal conductivity and low thermal expansion coefficient structure of space vehicles.

The invention relates to heat conduction and storage multifunctional pouring silica gel and a preparation method thereof. The heat conduction and storage multifunctional pouring silica gel consists ofthe following components in percentage by mass: 40-89% of double-component pouring silica gel, 5-20% of phase-change microcapsules, 5-20% of heat conduction packing after surface treatment, and 1-20%of a flame retardant, wherein the heat conduction packing consists of small particle size heat conduction packing and large particle size heat conduction packing through mixing. The preparation method comprises the following steps: performing surface treatment on the heat conduction packing; preparing the heat conduction and storage composite packing; preparing the double-component pouring silicagel; preparing components A1 and B1 of the heat conduction and storage multifunctional pouring silica gel; preparing the heat conduction and storage multifunctional pouring silica gel. Due to surfacetreatment on heat conduction packing of different particle sizes, the dispersibility of the packing in a silica gel substrate is improved, the heat conduction properties of the heat conduction and storage multifunctional pouring silica gel are improved, and due to addition of the phase-change microcapsules, the heat conduction and storage multifunctional pouring silica gel has heat storage temperature control properties.

The invention relates to a phase-changing microcapsule-based heat conducting potting silica gel comprising flame retardant and a preparation method thereof. The heat conducting potting silica gel is prepared from 40 to 89 percent of dual-component potting silica gel, 5 to 20 percent of phase-changing microcapsule, 5 to 20 percent of surface treated heat conducting filler, and 1 to 20 percent of flame retardant. The preparation method comprises the following steps: treating the surface of the heat conducting filler; preparing heat conducting composite filler; preparing a component A and a component B in the dual-component potting silica gel; preparing a component A1 and a component B1 in the heat conducting potting silica gel; and preparing the heat conducting potting silica gel. Accordingto the preparation method, the surface of the heat conducting filler is treated in the preparation process, so that the dispersity of the heat conducting filler in a silica gel matrix is improved, theheat conduction performance of the heat conducting potting silica gel is improved, and by adding the phase changing microcapsule, the heat conducting potting silica gel has heat storage temperature control performance. The heat conducting potting silica gel has good heat conduction performance and heat storage temperature control performance.

The invention relates to the field of novel electrothermal mateirals, and specifically relates to a graphene water-borne electrothermal film coating and a preparation method thereof. The coating comprises the following components: 40-60wt% of water-borne resin, 3-15wt% of nano graphene, 0.5-2.5wt% of mixture of calcium sulfate whisker and hydrogenated castor oil, 0.5-1.5wt% of polyaniline, 0.5-1.5wt% of polythiophene, 0.5-1.5wt% of a flatting agent, 0.5-1.5wt% of a defoaming agent, and 30-40wt% of water, totalling 100%. According to the coating, the mixture of calcium sulfate whisker and hydrogenated castor oil is added, so that the nano graphene can be prevented from agglomeration in the solution, and moreover, the defects of poor lapping of graphene laminates and incomplete power conducting and heat transferring network can be avoided, and as a result, the power conducting performance and the heating performance of the product can be improved.

In one embodiment, a magnetic cell used for a semiconductor device comprises a reference layer, a free layer and a non-magnetic spacer layer disposed between the reference layer and the free layer. The non-magnetic spacer layer comprises two-component, three-component or multi-component alloy oxide material which comprises MgO containing one or multiple other elements selected from the group formed by Ru, Al, Ta, Tb, Cu, V, Hf, Zr, W, Ag, Au, Fe, Co, Ni, Nb, Cr, Mo and Rh.

The invention discloses a zirconia-zirconium boride double-layer composite ceramic heating element. The heating section and transition section of the heating element are both composed of an inner layer and outer layer ceramic structure, the inner layer is a solid core structure ZrB2 matrix composite ceramic, and the outer layer is ZrO2 matrix composite ceramic. The ZrO2 matrix composite ceramic is prepared from ZrO2 composite powder, ZrO2 composite powder is prepared from ZrO2, Cao, Y2O3, Al2O3, CeO2, MgO and TiO2. The ZrB2 matrix composite ceramic is prepared from ZrB2, SiC, B4C, Zr, B, C and ZrO2 composite powder materials. The heating element provided by the invention can provide 2000-2100DEG C high temperature in an oxidation environment, and effectively overcomes the defects of complex double heating systems during use of a zirconia heating element, poor antioxidant ability of zirconium diboride composite ceramic heating element in an oxidizing atmosphere above 1800DEG C, and the like.

The invention discloses a multifunctional switch, in particular to a multifunctional polarity correction plug switch which can effectively and correctly guide an electricity user to use a plug and insert the plug into a correct polarity. In the multifunctional polarity correction plug switch, a rotating assembly and an inspection assembly are arranged in an insulation casing; and the inspection assembly is electrically connected with a touch-sensitive assembly and a conduction component. The structure can effectively and correctly guide the electricity user to use the plug and insert the plug into the correct polarity, can reduce the resistance and the invisible injury to a human body due to electromagnetic radiation dust, saves the energy, reduces the carbon emission and is beneficial to environmental protection.

The invention discloses an iridium-tungsten alloy nano-material, a preparation method thereof and application of the iridium-tungsten alloy nano-material as an acidic oxygen evolution reaction catalyst. An iridium-doped tungsten oxide nanowire intermediate is directly loaded on carbon cloth through a hydrothermal reaction, and the iridium-tungsten alloy nano-material is obtained through high-temperature reduction. The obtained nano material is loaded on carbon cloth and can be directly used as an electrode of an electrolytic tank, so that the problems of low diffusion rate, poor conductivity and the like caused by the use of a binder are avoided. Compared with a conventional IrO2 catalyst, the metal tungsten which is rich in content, low in price and resistant to acid corrosion is selected as a main body structure, the use amount of precious metal iridium is greatly reduced, and the cost is reduced. Compared with commercial IrO2, the alloy material has higher OER activity and stability, and has a relatively high industrial application prospect.

The invention is concerned with a kind of vacuum load switch for high voltage fixed type switchboard, relating to upside wire of switch, insulated switch, insulated knife frame, vacuum interrupter, downside move contactor, downside wire frame, united terminal, cable leading line plank, insulated knife insulated perch assemblage, interrupter insulated perch assemblage, operation frame and grounding equipment. The insulated switch connects with vacuum interrupter, the insulated knife insulated perch assemblage and interrupter insulated perch assemblage connect with operation frame, and the insulated knife frame, vacuum interrupter and downside wire frame are closed together. The hinge end of insulated switch has contact spring that connects with insulated switch and insulated knife frame. The move end of vacuum interrupter has contact spring that connects with downside move contactor and downside wire frame. This invention has large insulated strength and modularization level, and the simple using is fit for production on scaled.

The invention relates to a three-dimensional swing ball type tuned mass damper. A buffer material blocks a transfer path of a vertical vibration load between a bracket and a precise device, a swinging ball spatially moves in a spherical groove of a rubber base for absorbing horizontal vibration energy of the bracket, the rubber base made of a high-damping material is collided so that three-dimensional kinetic energy of the swinging ball can be buffered and dissipated, the radiuses of the spherical groove and the swinging ball of the rubber base are designed according to the vibration frequency of the bracket so that the purpose of resonance is achieved, the vertical vibration of the bracket can be effectively reduced, the planar vibration can also be remarkably decreased, ad thus the spatial vibration of the precise device on the bracket is remarkably reduced, and the normal working of the precise device is kept. The whole three-dimensional swing ball type tuned mass damper has the advantages f good stability and durability, long service life, simple and compact structure, convenience for processing, manufacturing and installing, and high adaptability, and can be widely applied to vibration damping of various precise instrument devices arranged on the light bracket.

A novel antistatic terrace system comprises a solvent-free undercoat layer, an antistatic copper foil layer, a static-conducting floating coat layer and an antistatic self-leveling topcoat layer frombottom to top. The antistatic self-leveling topcoat layer comprises, by weight, 35-50% of low-viscosity liquid epoxy resin, 4-8% of C12-14 glycidyl ether, 20-40% of 325-mesh quartz powder, 0.005-0.05%of modified single-walled carbon nanotube, 0.5-1.2% of hyperdispersant, 2-5% of benzyl alcohol, 10-20% of alicyclic amine, 5-8% of color paste, 0.1-0.5% of defoaming agent and 0.1-0.6% of leveling agent. The novel antistatic terrace system has the advantages that a newest material, the single-walled carbon nanotube, is introduced, and the formula is optimized, so that the surface resistance of the terrace can be adjusted between 5*104 omega and 1*109 omega; electric conductivity is uniform without blind spots, and accordingly, the defects of electric conductivity blind spots and surface particles are caused when conventional conductive fibers are used are overcome.