78results 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%.

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.

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.

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 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 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 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.

Nanoparticle compositions with enhancing dispersibility and long-term stability that can increase thermal conductivity of a dielectric fluid and improving insulation material lifetime, methods of manufacturing the nanoparticle compositions, and dielectric nanofluid compositions with the nanoparticles are provided herein. The nanoparticle compositions may include a metal oxide core and an organofunctional silane shell covering the TiO2 core, wherein the organofunctional silane shell is a structure represented by R1—Si(OR2)3.

An optical filter may include a first group of layers. The first group of layers may include alternating layers of a first dielectric material, of a group of dielectric materials, and a second dielectric material of the group of dielectric materials. The optical filter may include a second group of layers. The second group of layers may include alternating layers of a third dielectric material, of the group of dielectric materials, and a fourth dielectric material of the group of dielectric materials. The optical filter may include a third group of layers. The third group of layers may include alternating layers of a fifth dielectric material, of the group of dielectric materials, a sixth dielectric material, of the group of dielectric materials, and a metal material. The third group of layers may be disposed between the first group of layers and the second group of layers.

The invention discloses a preparation process of an enameled wire for a power motor of a new energy automobile and the enameled wire. The process flow comprises the following steps: regulating and controlling a polymer basic polymerization unit structure, modifying and compounding an inorganic nano filler, preparing polyimide slurry by a polymerization process, coating modified paint liquid, and post-processing. The enameled wire comprises a flat wire conductor, and a primer layer, a middle paint layer and a finish paint layer which are sequentially coated outside the flat wire conductor; the cross section of the flat wire conductor is rectangular, the four corners are all R corners, the radius of each R corner is 0.1-0.3 mm, and the outer surface of each R corner is provided with a micro-groove extending in the length direction of the flat wire conductor. The width of each micro groove ranges from 0.08 mm to 0.12 mm, and the depth of each micro groove ranges from 0.04 mm to 0.06 mm. The prepared enameled wire has the advantages that the corona resistance, the bending resistance, the insulating property and the processing adaptability of the prepared enameled wire meet the requirements of a 800V high-voltage platform flat wire motor.

To provide a dielectric material, a device comprising the same, and a method of preparing the dielectric material.SOLUTION: A dielectric material includes a layered perovskite compound, where the layered perovskite compound includes at least one selected from a Dion-Jacopson phase, an Aurivillius phase and a Ruddlesden-Popper phase, where the change (TCC) of a capacitance at 200°C with respect to a capacitance at 40°C is in the range from -15% to 15%, and the permittivity is 200 or more in the range from 1 kHz to 1 MHz. Also provided are a device comprising the same, and a method of preparing the dielectric material.SELECTED DRAWING: Figure 2

A heating element unit for an electric resistance heater comprises: a casing; a heating element within the casing; and an electrical insulator between the heating element and the casing. In some embodiments, the electrical insulator comprises first and second layers, the second layer having a greater dielectric strength than the first layer, and the second layer having: a dielectric strength of greater than about 1500 kV / m (greater than about 40 V / mil). In some embodiments, the electrical insulator comprises an electrically-insulating granular material and has a dielectric strength greater than about 1500 kV / m (greater than about 40 V / mil).

This invention relates to the field of polymer composite materials, and more particularly to a magnesium oxide thermally conductive and insulating material, its preparation method, and its applications. The material comprises, by weight, 100 parts polypropylene, 5 parts antioxidant, 5 parts plasticizer, 5 parts magnesium oxide, and 3-20 parts modified attapulgite; the modified attapulgite is selected from one of octadecyltrimethylammonium chloride-modified attapulgite, ethylenediamine-modified attapulgite, and hypozonyltriacetic acid-modified attapulgite. Polypropylene, as a matrix material, inherently possesses advantages such as low cost, ease of processing, and resistance to chemical corrosion. The introduction of modified attapulgite brings unique performance enhancements to the composite material. Attapulgite itself is a hydrous magnesium-aluminum silicate mineral with a layered chain structure, exhibiting a large specific surface area and adsorption capacity. After different chemical modifications, its surface properties are optimized, enabling better interaction with the polypropylene matrix and other fillers, thereby improving the mechanical properties of the composite material.

A meta-stable ferroelectric structure including one of the following oxides: an isovalent combination of the formula MxM′1-xO2-δ, wherein M, M′={Zr, Hf, Pb, W, Mo, Nb, Te, Ti}, 0≤x≤1, 0≤δ≤0.5 excluding {HfxZr1-xO2 all x in Pca21 phase}; an aliovalent combination of the formula MIxMII1-xO2-δ, wherein MI, MII={Bi, Y, Ta, In, Mo, Nb, Sc, Tl, Pd, Sb, W, Cr, Ge, Rh, Ti, Ag, Sn, Au, Ir, Pd, Ni, Ru, Hg}, 0≤x≤1, 0≤δ≤0.5, excluding certain aliovalent combinations; or an isovalent-aliovalent combination of the formula MxMIyMII1-x-yO2-δ, wherein M, MI, and MII are as set forth above, 0≤x≤1, 0≤y≤1, 0≤δ≤0.5; wherein the ferroelectric structure is in a Pca21 or Pmn21 space group or a subgroup thereof.

The invention relates to the field of polymer composite materials, in particular to a magnesium oxide heat-conducting insulating material and a preparation method and application thereof. The polypropylene composite material comprises the following components in parts by weight: 100 parts of polypropylene, 5 parts of an antioxidant, 5 parts of a plasticizer, 5 parts of magnesium oxide and 3-20 parts of modified attapulgite, the modified attapulgite is selected from one of octadecyl trimethyl ammonium chloride modified attapulgite, ethylenediamine modified attapulgite and nitrilotriacetic acid modified attapulgite. As a base material, polypropylene has the advantages of being low in cost, easy to process, resistant to chemical corrosion and the like. Due to the introduction of the modified attapulgite, unique performance improvement is brought to the composite material. The attapulgite is a water-containing magnesium-rich aluminosilicate mineral with a layer chain structure, and has large specific surface area and adsorption performance. After different chemical modifications, the surface properties of the composite material are optimized, the composite material can better interact with a polypropylene matrix and other fillers, and the mechanical properties of the composite material are improved.

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.

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