140results about "Metallic oxides" patented technology

Disclosed in the present invention are an anti-aging fireproof power cable and a manufacturing method therefor, comprising: first, extruding an insulating material outside a conductor to form an insulating layer, thereby producing a wire core; stranding a plurality of wire cores into a cable core; then, extruding composite gel on the surface of the cable core to form a gel layer; forming a polyvinylidene fluoride coating on the surface of the gel layer by means of a plasma discharge technology; and finally, coating the surface of the polyvinylidene fluoride coating with an armor layer, thereby obtaining an anti-aging fireproof power cable. The power cable obtained in the present invention has excellent aging resistance and a good fireproof effect, can satisfy requirements for long-term use, and exhibits higher safety.

The invention relates to the technical field of insulators, and provides a high-strength insulator and a preparation method thereof.The high-strength insulator is prepared from, by weight, 20-30 parts of aluminum oxide, 10-15 parts of kaolin, 6-10 parts of aluminum nitride, 15-20 parts of mullite, 5-10 parts of mica powder, 3-6 parts of titanium dioxide and 10-15 parts of modified silicon nitride whiskers; the modified silicon nitride whiskers are obtained by modifying silicon nitride whiskers with rare earth oxide. According to the technical scheme, the problem of low insulator strength in the prior art is solved.

The invention relates to an insulating material, in particular to a nano composite insulating material, an insulated cable and an insulation defect repairing robot. The nano composite insulating material comprises core-shell particles, modified montmorillonite and crosslinked polyethylene, wherein each core-shell particle is provided with a core layer and a shell layer. The insulating layer of the insulated cable is made of the nano-composite insulating material. The insulation defect repairing robot can utilize the insulation defect repairing material to repair the crack defect of the insulation layer of the related cable. The material can automatically repair cracks under the action of an electric field and a thermal field, repeated repair for more than five times is achieved, micro defects smaller than or equal to 100 microns can be automatically repaired in the cable operation process, 90% of unplanned power failure faults are reduced, and the whole life cycle fault cost is reduced by 60%.

A ternary paraelectric having a Cc structure and a method of manufacturing the same are provided. The ternary paraelectric having a Cc structure includes a material having a chemical formula of A2B4O11 that has a monoclinic system, is a space group No. 9, and has a dielectric constant of 150 to 250, wherein “A” is a Group 1 element, and “B” is a Group 5 element. “A” may include one of Na, K, Li and Rb. “B” may include one of Nb, V, and Ta. The A2B4O11 material may be Na2Nb4O11 in which bandgap energy thereof is greater than that of STO. The A2B4O11 material may have relative density that is greater than 90% or more.

The invention belongs to the technical field of enameled wire new materials, and discloses a heat-conducting insulating enameled copper flat wire and a preparation method thereof. Comprising the following steps: 1) preparing graphene-aluminum oxide composite particles; the preparation method comprises the following steps of (1) preparing graphene-aluminum oxide composite particles, (2) uniformly mixing the graphene-aluminum oxide composite particles and a polyimide resin solution to obtain mixed paint, and (3) carrying out vacuum defoaming on the mixed paint, then coating the surface of the copper flat wire with the mixed paint, and carrying out thermocuring treatment to obtain the heat-conducting insulating enameled copper flat wire which has good heat-conducting property, so that the service life of the enameled wire is prolonged.

The invention relates to the technical field of mineral cables, and provides a mineral fireproof power cable which sequentially comprises a cable core, a mineral insulating layer, a copper sheath and an outer sheath layer from inside to outside, and the outer sheath layer is prepared from the following raw materials in parts by weight: 95-105 parts of polyethylene, 4-6 parts of a plasticizer, 30-35 parts of composite titanium dioxide, 1-2 parts of an antioxidant and 5-8 parts of a flame retardant; the composite titanium dioxide is titanium dioxide treated by butanedioic anhydride and phthalic anhydride. According to the technical scheme, the problem of poor tensile strength of the polyethylene outer sheath layer of the mineral fireproof power cable in the prior art is solved.

The invention relates to a preparation method of electrical-grade magnesium oxide for slowing down current leakage, belongs to the technical field of electrical-grade magnesium oxide, and solves the problems of poor insulativity, relatively high electrical leakage and the like in the actual use process of electrical-grade magnesium oxide. Comprising the following steps: step 1, weighing nano calcium oxide and lanthanide series metal oxide, putting the nano calcium oxide and the lanthanide series metal oxide into a quartz crucible, and uniformly mixing to obtain a primary mixed oxide auxiliary agent; 2, heating the mixed oxide auxiliary agent obtained in the step 1 in a muffle furnace, cooling to room temperature under a drying condition to obtain white powder, and grinding to obtain an oxide auxiliary agent; 3, absorbing ethyl acetate (EA), hydrogen-containing silicone oil and polycyclic aromatic hydrocarbon (D30), putting into a centrifugal tube, and uniformly mixing to obtain a liquid film coating auxiliary agent; the method has the advantages that the current leakage of the electrical-grade magnesium oxide with poor insulativity can be slowed down by adding the metal oxide aid under the condition that the original properties of the electrical-grade magnesium oxide are not changed. The method is simple, convenient and obvious in effect.

The present invention discloses an easily grindable high thermal conductivity insulating hole plugging paste, a preparation method thereof and an application thereof. The insulating hole plugging paste comprises the following components in weight percentage: 80-93 wt% of insulating and thermally conductive powder, 6-15 wt% of resin, 0.2-2 wt% of curing agent, and 0.8-3 wt% of auxiliary agent. The insulating hole plugging paste of the present invention can match boards with high Tg and low CTE, and has the characteristics of high thermal conductivity, anti-sagging and easy grindability after curing, and is particularly suitable for hole plugging on ceramic substrates, 5G high-frequency and high-power boards.

A flame-retardant cable includes at least one core having a conductor and at least one protecting layer surrounding the core. The protecting layer is made from a low smoke zero halogen (LS0H) flame-retardant polymer composition having at least 70 phr of a polyethylene homopolymer or copolymer having a density lower than 0.90 g / cm3 as a halogen-free polymeric base, 100 to 800 phr of at least one metal hydroxide, and at least 10 phr of a tannin.

The insulation covered conductive wire includes: a conductive wire; a non-adherent, laterally wound insulation member which covers an outer circumference of the conductive wire without adhering thereto, and is formed by laterally winding a plurality of first ceramic fibers configured from a plurality of first ceramic strands in an extending direction of the conductive wire without being in close contact and adhering to each other; and a non-adherent braided insulation member which covers an outer circumference of the non-adherent, laterally wound insulation member without adhering thereto, and is formed by braiding a plurality of second ceramic fibers configured from a plurality of second ceramic strands without being in close contact and adhering to each other.

The invention provides a high-flexibility aluminum alloy cable, which belongs to the technical field of cables and sequentially comprises a modified aluminum alloy conductor, a composite insulating layer, a flexible shielding layer and a multifunctional modified sheath layer from inside to outside. The multifunctional modified sheath layer comprises 46.8%-53.5% of hydrogenated styrene-butadiene block copolymer modified polyamide, 15.6%-20.8% of an ethylene-octylene copolymer, 5.8%-10.4% of an environment adaptability repairing agent, 3.2%-5.8% of organic modified montmorillonite, 1.6%-3.6% of an insulation regulation and control auxiliary agent, 2.3%-4.2% of a compatilizer and 0.7%-1.4% of a cross-linking agent. The problems that flexibility, environmental adaptability, self-repairing capacity and high-voltage insulation performance of an existing aluminum alloy cable are difficult to cooperate, and performance matching of a conductor and a sheath is insufficient are effectively solved, and the comprehensive use performance, scene adaptation range, long-acting reliability and high-voltage use safety of the cable are remarkably improved.

The application discloses a kind of superhigh temperature self-adaptive insulated cable of composite and preparation method thereof, which uses carbon nanotube fiber bundle as conductor, multiple layer aerogel-ceramic nanofiber composite felt as insulator, stress buffer layer formed by negative thermal expansion coefficient material is arranged between layers, and the outer sheath is chemical vapor infiltration SiC carbon fiber braided sleeve.The cable of the application has the advantages of ultra-light, high thermal stability, self-adaptive sealing and strong thermal shock resistance, and is suitable for extreme high temperature environment above 800 DEG C;The preparation method includes supercritical drying, pre-stretching winding and other key processes, to realize the high performance and reliability of the cable.

Aspects relate to patterned nanostructures having a feature size not including film thickness of below 5 microns. The patterned nanostructures are made up of nanoparticles having an average particle size of less than 100 nm. A nanoparticle composition, which, in some cases, includes a binder, is applied to a substrate. A patterned mold used in concert with electromagnetic radiation function to manipulate the nanoparticle composition in forming the patterned nanostructure. In some embodiments, the patterned mold nanoimprints a pattern onto the nanoparticle composition and the composition is cured through UV or thermal energy. Three-dimensional patterned nanostructures may be formed. A number of patterned nanostructure layers may be prepared and joined together. In some cases, a patterned nanostructure may be formed as a layer that is releasable from the substrate upon which it is initially formed. Such releasable layers may be arranged to form a three-dimensional patterned nanostructure for suitable applications.

A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided, the dielectric ceramic composition includes a BaTiO3-based base material main component and a subcomponent, wherein the subcomponent includes zinc oxide (ZnO) as a first subcomponent, and the content of the ZnO is 0.1 mol % or more and less than 0.4 mol % with respect to 100 mol % of the base material main component.

Proposed is a method for producing an insulating composite material for a silicone rubber socket, in which the method includes a step of producing a molded body of a mixture of liquid silicone and a heterogeneous composite powder composited from (i) metal powder and (ii) polymer or ceramic powder. An insulating composite material for a silicone rubber socket, produced by the method, is also proposed. Further proposed is a silicone rubber socket manufacturing method including the steps of producing a sheet-shaped molded body from a mixture including liquid silicone and a heterogeneous composite powder composited from (i) a metal powder and (ii) a polymer or ceramic powder and (b) forming a plurality of pores extending through the sheet-shaped molded body in a thickness direction and filling the pores with a conductive material. In addition, a silicone rubber socket manufactured by the method is also proposed.

The invention discloses a mineral insulated cable and a preparation method thereof, and belongs to the technical field of mineral insulated cables. A mineral insulated cable comprises a conductive core, an insulating layer and an embossed copper protective layer. The insulating layer is the magnetic particles coated with the silicon dioxide layer, has high insulativity, can replace magnesium oxide, has better low water absorption than magnesium oxide, and is beneficial to long-term stable power supply. After being magnetized, the magnetic particles wrapped with the silicon dioxide layers have permanent magnetism, can keep magnetism in a high-temperature environment for a long time, and can ensure that the insulating property is not reduced after the insulating layer is bent; the technical defects that a conventional magnesium oxide insulating layer needs to adopt a binder and the bending insulating property is reduced are overcome; and the cable is easy to bend and convenient to construct.

Magnet wire including extruded insulation formed from a blend of different polymeric materials is described. A magnet wire may include a conductor and insulation formed around the conductor. The insulation may include base enamel insulation and at least one layer of extruded insulation formed from a blend of at least three different polymeric materials. The enamel insulation may include either filled polyimide or filled polyamideimide. For the blend, a first polymeric material, such as polyetheretherketone, may have a thermal index above 240° C. Second and third polymeric materials, such as polyphenylsulfone and polyethersulfone, may have lower thermal indexes.

The invention discloses low-temperature curing slurry for a thick film hybrid circuit and a preparation method of the low-temperature curing slurry, and relates to the technical field of electronic slurry. Wherein the organic carrier comprises 35 to 55 weight percent of thermosetting resin and 45 to 65 weight percent of solvent; the thermosetting resin comprises at least two of epoxy resin, modified epoxy resin and organosilicon modified polyester resin, the epoxy resin is bisphenol A type solid resin, and the modified epoxy resin is an alkoxy siloxane modified product with an epoxy functional group. According to the invention, at least two of epoxy resin, modified epoxy resin and organosilicon modified polyester resin are adopted as matrix resin, the epoxy resin is bisphenol A type solid resin, a body network structure is formed after curing and crosslinking, the crosslinking density is high, the modified epoxy resin is an alkoxy siloxane modified product with an epoxy functional group, and the curing strength is high. Alkoxy siloxane contained in the resin can improve the adhesive force in the curing process, and in addition, the leveling property of the slurry can be improved.

This invention discloses an insulating material for a high-power downhole heater and its preparation method. The insulating material is an insulating ceramic material prepared by ball milling, drying and granulation, aging and molding, and plastic sintering of a mixture comprising magnesium oxide, manganese-containing dopants, zirconium-containing dopants, and modifying agents. Because the manganese-containing and zirconium-containing dopants can form solid solutions with magnesium oxide, they activate the magnesium oxide crystal lattice, improve the material's density and strength, and enhance its insulation performance. The modifying agents reduce the vacancy defects in the MgO grains, making it less prone to moisture absorption and the formation of MgO-OH structures, thus increasing the volume resistivity. The resulting insulating ceramic material exhibits excellent high-temperature insulation properties and can be used as an insulating material for high-power downhole heaters.

Magnet wire with corona resistant enamel insulation is described. A magnet wire may include a conductor, and at least one layer of polymeric enamel insulation may be formed around the conductor. The polymeric enamel insulation may include a filler dispersed in a base polymeric material, such as polyimide. Additionally, the filler may include an organometallic compound.

A dielectric 10 includes a complex oxide. The complex oxide is amorphous and has a composition represented by CexAl1–xOk. In said composition represented by CexAl1–xOk, the condition 0.400≤x<0.90 is satisfied, and k is a value that preserves the electroneutrality of the complex oxide.

The application provides a rare earth doped electric porcelain and a preparation method and application thereof. The electric porcelain comprises the following preparation raw materials: aluminum oxide, ceramic powder, quartz, titanium white powder, a rare earth dopant, a dispersing agent and a forming agent. The forming agent comprises the following preparation raw materials: modified aluminum silicate, silicone rubber, isopropyl trioleic acyloxy titanate and isocyanate. The rare earth dopant comprises the following preparation raw materials: diyttrium trioxide and lanthanum stearate. In the application, the electric porcelain material with excellent mechanical properties is prepared through the collocation of the preparation raw materials.

To provide an input-output device with high reliability and smaller thickness.SOLUTION: An input-output device includes a first pixel electrode, a second pixel electrode, a first common electrode, a second common electrode, a liquid crystal, a first insulating film, a second insulating film, and a transistor. The first common electrode functions as one electrode of a detection element. The second common electrode functions as the other electrode of the detection element. The transistor includes a first gate, a second gate, and a semiconductor layer. The pixel electrode, the common electrode, and the second gate exist on different surfaces. The second gate includes one or more kinds of metal elements included in the semiconductor layer. Preferably, the second gate, the pixel electrode, and the common electrode contain one or more kinds of metal elements included in the semiconductor layer.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of paper-wrapped flat copper wires. Provided are paper-wrapped flat copper wires and a preparation process therefor. The surface of aramid insulation paper is activated by using plasma method surface modification and combining sodium nitrite and an active oxygen gas, thereby significantly improving the surface energy of the aramid insulation paper, such that the interface bonding force between the aramid insulation paper and a metal conduit is significantly improved, and the prepared paper-wrapped flat copper wires have higher stability. By coating the surface of the aramid insulation paper with a layer of a mixed solution of silicon dioxide, silicon carbide and a rare earth oxide, the mechanical strength and oxidation resistance of the aramid insulation paper are further improved, and the service life of the prepared paper-wrapped flat copper wires is prolonged. By means of hot pressing, the acting force between aramid cellulose chains is enhanced, the combination is tighter, and the linear density is increased, such that the tearing index and tensile index of the aramid insulation paper are significantly improved.

A multilayer ceramic capacitor is provided. The multilayer ceramic capacitor comprises: a ceramic body, comprising a dielectric layer and a first inner electrode and a second inner electrode; and a first outer electrode and a second outer electrode, which are arranged on the outer surface of the ceramic body, wherein the dielectric layer comprises dielectric grains containing a dielectric ceramic composition, the dielectric ceramic composition comprises a main component of a matrix material and a subsidiary component, the subsidiary component comprises Dy and Nb as a first subsidiary component, and the main component of the matrix material comprises at least one compound selected from the following compounds: BaTiO3; (Ba 1‑x Ca x )(Ti 1‑ y Ca y )O3, where 0≤x≤0.3, 0≤y≤0.1; (Ba 1‑x Ca x )(Ti 1‑y Zr y )O3, where 0≤x≤0.3, 0≤y≤0.5; and Ba(Ti 1‑y Zr y )O3, where 0

A dielectric assembly solid dielectric elements within a liquid or solid matrix material. The dielectric assembly may be manufactured by pressing a dielectric powder to form pressed dielectric elements, sintering the pressed dielectric elements to form the solid dielectric elements, and assembling the solid dielectric elements within the matrix material to form the dielectric assembly. The solid dielectric elements can be specifically oriented (e.g., in one or more tiled layers) or randomly oriented, and the dielectric assemblies can be molded and / or machined into desired 3D geometries. The dielectric assemblies can be relatively large (e.g., >1 mm3) while having bulk dielectric constants higher than conventional slurries and composites formed of dielectric powder in a liquid or solid matrix.

The application relates to the technical field of electric wires and cables, and particularly discloses an overhead parallel bundled conductor. The overhead parallel bundled conductor comprises at least two parallel arranged conductors, and adjacent conductors are fixedly connected through connecting ribs; an insulating layer is arranged on the outer wall of the conductor; the insulating layer comprises the following raw materials: cross-linked polyethylene, an antioxidant, an ultraviolet absorber, nano magnesium oxide, methyl vinyl silicone rubber, flaky boron nitride and a silane coupling agent. The obtained overhead parallel bundled conductor has a heat conduction coefficient of 0.60 W / mk, the elongation at break reduction rate after heat aging is at least 5.0%, the heat dissipation of the overhead parallel bundled conductor is improved, the volume resistivity at 20 DEG C is at most 2.56*1014 ohm*cm, the dielectric strength is at most 40 kV / mm, and the insulating performance of the overhead parallel bundled conductor is improved.

To provide a battery insulation sheet and a manufacturing method for the battery insulation sheet.SOLUTION: A battery insulation sheet includes a substrate, and an aerogel layer on the substrate, wherein the aerogel layer includes: a fibrous support; an aerogel; and a functional material including a binder, a dispersant, or a combination thereof, and satisfies a following formula 1: 50≤A≤100000, A=Ti / Ds, wherein, in the formula 1, Ti denotes a thickness of the aerogel layer, and Ds denotes an average diameter of the fibrous support. Also there is provided a manufacturing method for the battery insulation sheet.SELECTED DRAWING: Figure 4

A dielectric high gradient insulator device comprises a stack of at least two dielectric layers which are in physical contact with each other and which have different dielectric constants. At least two dielectric layers are configured to form a shaped electric field, when the device is placed between electrodes having a voltage difference. The shaped electric field is in a region proximal to a surface of the at least two dielectric layers, and causes deflection of negatively charged particles away from the surface, thereby inhibiting voltage breakdown of the device. A method of manufacturing the device is also presented.

The present disclosure relates to an electrically insulating inorganic sheet 1 comprising at least 90% by weight inorganic particles 2, and a binder 3 which binds the particles together to form the sheet, for use as solid insulation in an electrical device, e.g. a power transformer.