105results about "Metallic oxides" patented technology

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%.

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 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.

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

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.

The invention relates to the field of amorphous alloy coatings, and discloses a composite insulating film, a preparation method of the composite insulating film, an iron-based amorphous alloy strip and a motor. The composite insulating film comprises a first insulator material and a second insulator material, the first insulator material is selected from Al2O3 and / or ZrO2; the second insulator material is selected from AlN and / or SiO2, and the mass percentage of the second insulator material is 15-90%. Resin gluing is replaced with insulating coating, the situation that the amorphous alloy strip deforms to generate stress in the impregnation curing process is avoided, meanwhile, the composite insulating film made of the first insulator material and the second insulator material in different component proportions is designed, the thermal expansion coefficients of the amorphous alloy strip at different annealing temperatures can be matched, and the thermal expansion coefficient of the amorphous alloy strip is improved. And the risks of strain stress and coating separation caused by inconsistent expansion coefficients of the insulating layer and the amorphous alloy strip are reduced. In addition, the composite insulation coating film prepared by the magnetron sputtering process is good in uniformity and has good and stable insulation performance.

An insulating coating composition for electrical steel sheets according to an embodiment of the present invention comprises 100 parts by weight of metal phosphate, 30 to 170 parts by weight of silica, 20 to 105 parts by weight of nitrate, 10 to 50 parts by weight of boron compound, and 50 to 150 parts by weight of one or more shielding functional agents selected from dolomite, talc, carbonate and feldspar.

The present invention provides a special additive for magnesium oxide used in BTTZ fire-resistant cables, belonging to the technical field of the preparation of mineral insulated cables. The special additive for magnesium oxide used in BTTZ fire-resistant cables includes additive A. Additive A is based on zirconium silicate as the matrix, with calcium ions as doping ions, and is prepared into nano-scale fibers through the sol-gel method and the electrospinning method, and then a nano-scale additive is obtained. The special additive for magnesium oxide used in BTTZ fire-resistant cables of the present invention can increase the breakdown voltage of the magnesium oxide filling layer, and thus improve its electrical insulation performance.

The present disclosure discloses an insulated wire and a preparation method thereof, a coil, and an electronic / electrical equipment, relating to the technical field of wire and cable production. The insulated wire includes a conductor, with an intermediate layer and an insulating layer sequentially coated on the conductor; the intermediate layer includes polyamide-imide and polyimide; and the insulating layer includes a specific proportion of TPI and corona-resistant material. By optimizing the composition of the intermediate layer and the insulating layer, the insulating layer of the present disclosure not only has good corona resistance performance but also possesses high adhesion strength, thus reducing the likelihood of breakdown in the insulated wire.

A dielectric composition includes a main ingredient having a perovskite structure represented by ABO3, where A is at least one of Ba, Sr, and Ca and B is at least one of Ti, Zr, and Hf, and a first accessory ingredient. The first accessory ingredient comprises 0.1 mole or more of a rare earth element, 0.02 mole or more of Nb, and 0.25 mole or more and 0.9 mole or less of Mg, a sum of contents of the rare earth element and Nb is 1.5 mole or less.

The invention relates to a method for producing a high-temperature-resistant, temperature-resistant integral bond (100) between a conductor element (1) and a connecting part (2), comprising the following steps:-providing the conductor element (1),-providing the connecting part (2) having a guide (21), in particular a cylindrical shape, for receiving the conductor element (1),-providing the conductor element (1),-providing the connecting part (2), providing an annular element (3); inserting the conductor element (1) into the guide (21), the conductor element (1) inserted into the guide (21), the ring element (3) and the connecting part (2) being arranged relative to one another such that the ring element (3) abuts against both:-a first joining surface (41) of the outer housing (4)-a second joining surface (22) of the connecting part (2),-joining by means of a thermal joining process, during the joining process, the ring element (3) is completely melted and an integral bond (100) is produced between the conductor element (1) and the connecting part (2).

The purpose of the present invention is to provide a polycrystalline dielectric thin film and a capacitor element that have a large relative dielectric constant. Provided is a polycrystalline dielectric thin film that has a perovskite oxynitride as a principal component. The perovskite oxynitride is represented by compositional formula Aa1Bb1OoNn (a1+b1+o+n=5), and the a-axis length of the crystal lattice of the perovskite oxynitride is larger than a theoretical value.

The invention relates to the field of magnesium oxide powder manufacturing, and provides fused salt heater magnesium oxide powder and a manufacturing method thereof.The manufacturing method comprises the steps that S1, raw materials are selected, specifically, the raw materials comprise MgO, SiO2, CaO and Fe2O3, the mass percentage content of MgO is larger than 98.5%, the mass percentage content of SiO2 is smaller than 0.8%, the mass percentage content of CaO is smaller than 0.6%, and the mass percentage content of Fe2O3 is smaller than 0.3%; s2, processing and crushing: crushing the raw materials into 50-325-mesh powder by a crusher; s3, removing iron; s4, shaping the surface of the powder: crushing and shaping the iron-removed powder by a Bama sand making machine; s5, additive modification: adding an additive after crushing and shaping, and stirring; and S6, high-temperature treatment: carrying out heat treatment on the stirred powder. The magnesium oxide powder prepared by the preparation method disclosed by the invention is high in voltage resistance, high in insulation resistance and long in service life.