26results about "Inhomogenous insulation material" patented technology

The present invention relates to a method for preparing an electrical cable comprising a step of applying an insulating layer around at least one elongated electrically conductive element from a polymer composition, wherein mineral precursors are introduced into the polymer composition prior to said application, which are then converted into mineral particles. The invention also relates to cables obtained according to this method that comprise mineral particles within their insulating layer, and which are particularly well suited for the transmission of medium- or high-voltage direct current. Figure for the abstract: NONE

In one aspect, the insulating composition is an insulating composition including solids in an amount of 35% by weight or less based on the total weight, wherein the solids include inorganic particles and a polymer material, and the insulating composition has a viscosity of 4,000 mPa·s or more at a shear rate of 0.0251 s-1 and a viscosity of 400 mPa·s or less at a shear rate of 251 s-1. The insulating composition has low viscosity at high shear rates and high viscosity at low shear rates, thereby providing excellent coating processability and enabling formation of a narrow insulation width by minimizing sliding portions during insulating layer formation, which can prevent the problem of reversal of the positive electrode / negative electrode capacity ratio that may occur due to sliding portions.

A microisolator has been described that exhibits an enhanced isolation breakdown voltage. The microisolator may include an electrically floating ring surrounding one of the isolator elements of the microisolator. The isolator element may be a capacitor plate or a coil. The electrically floating ring surrounding one of the isolator elements may reduce the electric field at the outer edge of the isolator element, thereby enhancing the isolation breakdown voltage.

To provide a dielectric that exhibits superior electrical properties and does not cause the blistering of copper foil during the production of a copper-clad laminate using the dielectric, and a production method therefor, and also provide a copper-clad laminate using the dielectric and a production method therefor.SOLUTION: A dielectric has a residual organic matter content of 500 μg / g or less. A metal-clad laminate includes the dielectric and a metal foil.SELECTED DRAWING: None

The present invention provides a stator insulating material suitably applicable to a stator having a high-density coil, as well as a stator having a coil insulated by the stator insulating material and a method for manufacturing the same. [Solution] The stator insulating material contains epoxy resin, a curing agent, and spherical inorganic fillers, and is used for insulating between the coils of the stator.

The invention relates to conductive textile yarns, threads, or strands for textile-technological structure production, in particular for electronic textiles with active and / or passive electronic components, wherein the yarn, thread, or strand has an electrically insulating sheath or coating around its core. According to the invention, the sheath or coating has thermally meltable properties and, while maintaining its high resistance, is provided with a homogeneous doping of conductive microparticles, wherein a local, time-controlled application of temperature and pressure to the sheath or coating allows for the creation of a localized, electrically conductive access point to the core.

An insulating composition according to an embodiment of the present invention comprises a solid portion at a content of 35 wt % or less with respect to the total weight thereof, wherein the solid portion comprises inorganic particles, a polymer material, and clay, the clay has positive and negative charges distributed in the particles and is included in an amount of 0.01 parts by weight to 10 parts by weight with respect to 100 parts by weight of the solid portion, and the polymer material comprises a functional group-containing polymer. The insulating composition exhibits low viscosity at high shear rates and high viscosity at low shear rates, thereby providing excellent coating processability. During formation of an insulating layer, sliding portions are minimized so that the insulation width can be formed narrowly, thereby preventing a problem in which the positive / negative electrode capacity ratio may be reversed due to sliding portions.

A gas-insulated switching device comprises a conductor held by an insulating spacer within a sealed container filled with insulating gas. An insulating layer is applied to the surface of the curved conductor within the device. This insulating layer is formed by laminating an insulating material to the conductor's surface using either a thermal spraying or an aerosol deposition process. Ceramic particles are typically used as the insulating material. The insulating layer is then impregnated with an insulating resin.

Various applications of the teachings of the present disclosure include a powder coating formulation suitable for producing an insulation system of an electrical machine. The formulation may include: a curable resin mixture; and spherical SiO2 filler particles having a maximum particle diameter of 100 μm.

A compound for insulation may include a polymer and a filler. A method for insulating a wire using said compound comprises melting a polymer to form a molten polymer, mixing the molten polymer with a filler to form an insulation compound, applying the insulation compound along a wire, and cooling the insulation compound at a controlled rate to form a uniform crystal.

This application relates to a non-spherical particle. The non-spherical particle has a first dimensional size, a second dimensional size, and a third dimensional size. The first dimensional size is between 0.01 µm and 1 µm, a ratio of the first dimensional size to the second dimensional size is between 1 / 10 and 1 / 1200, and the third dimensional size is between the first dimensional size and the second dimensional size. The non-spherical particle includes one or more elements of titanium (Ti), magnesium (Mg), aluminum (Al), nickel (Ni), silver (Ag), copper (Cu), indium (In), tin (Sn), silicon (Si), boron (B), gallium (Ga), zinc (Zn), iron (Fe), germanium (Ge), bismuth (Bi), gold (Au), and manganese (Mn). A surface of the non-spherical particle is coated with a surfactant. The surfactant is selected from one or more of a fatty acid, an organosilicone compound, and a combination thereof. This application also relates to a dielectric composite material including the non-spherical particle, and a method for regulating dielectric properties of the composite material by using the non-spherical particle.

There is provided a laminate having excellent partial discharge resistance even in a high-humidity environment and also having excellent insulating properties. A laminate comprising at least a conductor and an insulating coating, wherein the insulating coating is composed of a nanocomposite formed of a resin composition in which a metal oxide hydrate is dispersed in a resin, and wherein the metal oxide hydrate has a negative zeta potential when dispersed in N-methyl-2-pyrrolidone (NMP).

A composition for forming an insulating substrate includes 100 parts by weight of a modified liquid crystal polymer and 0.5 to 85 parts by weight of a dielectric filler. The modified liquid crystal polymer has a repeating unit structure shown in the specification, Ar is 1, 4-phenylene group, 1, 3-phenylene group, 2, 6-naphthyl or 4, 4 '-biphenylene group, Y is-O-or-NH-, and X is-O-or-NH-. And X is an amide group, an imino group, an amidino group, an aminocarbonylamino group, an aminothiocarbonyl group, an aminocarbonyloxy group, an aminosulfonyl group, an aminosulfonyloxy group, an aminosulfonylamino group, a carboxylic acid ester, a (carboxylic acid ester) amino group, a (alkoxycarbonyl) oxy group, an alkoxycarbonyl group, a hydroxyamino group, an alkoxyamino group, a cyanoxy group, an isocyanate group, or a combination thereof. The insulating substrate formed by using the composition can be applied to forming a circuit board structure. The composition can improve the dielectric constant of the insulating substrate and maintain a relatively low dielectric loss factor.

The present invention provides a dielectric material with excellent electrical properties and a method for manufacturing the same, which prevents blistering of the copper foil during the production of copper-clad laminates using the dielectric material. Furthermore, it provides a copper-clad laminate using this dielectric material and a method for manufacturing the same. [Solution] A dielectric characterized by having a residual organic matter content of 500 μg / g or less. A metal-clad laminate having the dielectric and a metal foil.

To improve a withstand voltage while facilitating manufacture.SOLUTION: A gas-insulated switchgear (1) comprises a conductor (4) held by an insulating spacer (3) in a sealed container (2) filled with an insulating gas. An insulating layer (20) is provided on the surface of the curved conductor in the conductor. The insulating layer is formed by laminating an insulating material on the surface of the curved conductor by a thermal spraying method or an aerosol deposition method. Ceramic particles (21) are used as the insulating material. The insulating layer is impregnated with an insulating resin (22).SELECTED DRAWING: Figure 2

An insulating composition according to one embodiment of the disclosure is an insulating composition including solids in an amount of 35% by weight or less based on the total weight, the solids include inorganic particles, a polymer material, and clay, the clay has positive charges and negative charges distributed within particles thereof and is included in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the solid content, and the polymer material includes a functional group-containing polymer. The insulating composition has low viscosity at high shear rates and high viscosity at low shear rates, thereby providing excellent coating processability and enabling formation of a narrow insulation width by minimizing sliding portions during insulating layer formation, which can prevent the problem of reversal of the positive electrode / negative electrode capacity ratio that may occur due to sliding portions.

A dielectric that has excellent electrical characteristics and causes no blistering of a copper foil during production of a copper-clad laminate using the dielectric, and a method for producing the same are provided. Further, a copper-clad laminate using the dielectric, and a method for producing the same are provided. The dielectric has a residual organic matter content of 500 µg / g or less. The metal-clad laminate has the dielectric and a metal foil.

The present invention relates to a method for preparing an electrical cable comprising a step of applying an electrically insulating layer around at least one elongated electrically conductive element from a polymer composition, wherein mineral precursors are introduced into the polymer composition prior to said application, which are then converted into mineral particles. The invention also relates to cables obtained according to this method that comprise mineral particles within their electrically insulating layer, and which are particularly well suited for the transmission of medium- or high-voltage direct current.

According to one aspect of the present invention, an insulating composition comprises 35 wt % or less of solid content with respect to the total weight, and is characterized by the solid content comprising inorganic particles and a polymer material, having a viscosity of 4,000 mPa·s or greater at a shear rate 0.0251 s-1, and having a viscosity of 400 mPa·s or less at a shear rate 251 s-1. The insulating composition has a low viscosity at a high shear rate and a high viscosity at a low shear rate, thereby having excellent coating processability, and can form a narrow insulating width by minimizing a sliding part when forming an insulating layer, thereby preventing the problem that a positive / negative electrode capacity ratio that may occur due to the sliding part is reversed.

A method of manufacturing a corrosion-resistant wireline cable includes embedding a first layer of armor wires onto a core cable using a heated carbon fiber reinforced polymer. A second layer of carbon fiber reinforced polymer is then extruded to envelop the first layer of armor wires. In one method, a layer of virgin or colored polymer is extruded over the second layer, and a second layer of armor wires is embedded through the virgin or colored polymer, displacing it to envelop the outer armor wires. In another method, each wire in the second armor layer is coated with virgin polymer before being embedded into the second carbon fiber reinforced polymer layer. The assembly is then heated to cause the virgin polymer to migrate outward, forming an outermost layer. In both methods, a final jacket layer is applied over the exterior to complete the cable. The resulting cable provides corrosion resistance and mechanical reinforcement.

Disclosed herein are embodiments of high Q, temperature stable materials with low dielectric constants. In one aspect, a low loss dielectric material includes one or more transition metal oxides based on the (Zn, Ni, Co)O—Al2O3—TiO2 system comprising an aluminate comprising one of cobalt (Co) or nickel (Ni) crystallized in a spinel structure. The low loss dielectric material additionally comprises one or more of: a titanate comprising the one of Co or Ni crystallized in a spinel structure, an aluminum oxide and a titanium oxide crystallized in a rutile structure.

A cable includes an inner conductor and a dielectric layer extending around the inner conductor. The dielectric layer includes a linearly-stretched polypropylene film having a porous structure that includes a plurality of pores that extend through a thickness of the linearly-stretched polypropylene film. The dielectric layer includes air molecules trapped within the pores of the linearly-stretched polypropylene film such that the dielectric layer includes polypropylene and air. The cable includes an outer conductor extending around the dielectric layer.

Process for the manufacture of a non-curable silicone composition comprising carbon black, and its use in manufacture of curable silicone compositions in particular for use in high voltage direct current (HVDC) applications.

A method (300) of manufacturing a heating chamber (200) for an aerosol generating device (100) is disclosed. The method (300) includes providing a heating chamber (200) including a thermally conductive shell (202) and an opening (204) for receiving an aerosol substrate within the heating chamber (200), depositing a layer (206) of electrically insulating material on an exterior surface (203) of the thermally conductive shell (202) of the heating chamber (200) using vacuum deposition, and attaching a heating element (208) to the heating chamber (200) such that the heating element (208) is in contact with the layer (206) of electrically insulating material, the layer (206) of electrically insulating material preventing any contact between the heating element (208) and the thermally conductive shell (202).

A method for preparing a multilayer self-healing electrically conducting elastomer film (10), the method comprising providing (12a) an electrically insulating substrate layer (12) comprising an elastomer matrix, applying (14a) a first layer (14) comprising a self-healing elastomer on top of the electrically insulating substrate layer (12), crosslinking (16) the first layer (14) comprising a self-healing elastomer with the electrically insulating substrate layer (12), applying (18a) a layer (18) comprising a self-healing electrically conducting liquid metal elastomer composite comprising gallium as main phase on top of the first layer (14) comprising a self-healing elastomer, and activating (20) the surface of the layer (18) comprising a self-healing electrically conducting liquid metal elastomer composite with laser to improve electric conductivity of the layer. A multilayer self-healing electrically conducting elastomer film (10), comprising an electrically insulating substrate layer comprising an elastomer matrix (12), a first layer (14) comprising a self-healing elastomer crosslinked with the electrically insulating substrate layer, and a layer (18) comprising a self-healing electrically conducting liquid metal elastomer composite comprising gallium as main phase on top of the first layer comprising a self-healing elastomer. A method for preparing an electronic device. An electronic device comprising the multilayer self-healing electrically conducting elastomer film (10).

A method of manufacturing a corrosion-resistant wireline cable includes embedding a first layer of armor wires onto a core cable using a heated carbon fiber reinforced polymer. A second layer of carbon fiber reinforced polymer is then extruded to envelop the first layer of armor wires. In one method, a layer of virgin or colored polymer is extruded over the second layer, and a second layer of armor wires is embedded through the virgin or colored polymer, displacing it to envelop the outer armor wires. In another method, each wire in the second armor layer is coated with virgin polymer before being embedded into the second carbon fiber reinforced polymer layer. The assembly is then heated to cause the virgin polymer to migrate outward, forming an outermost layer. In both methods, a final jacket layer is applied over the exterior to complete the cable. The resulting cable provides corrosion resistance and mechanical reinforcement.