30results about "Shielding materials" patented technology

Proposed are a nonwoven fabric, a composite material, and a method for manufacturing the same, in which the nonwoven fabric includes carbon fibers plated with a metal selected from nickel (Ni), copper (Cu), cobalt (Co), zinc (Zn), gold (Au), silver (Ag), chromium (Cr), tin (Sn), palladium (Pd), rhodium (Rh), iron (Fe), or a combination thereof. A composite material, which is manufactured by blending the nonwoven fabric containing carbon fibers with a resin, exhibits excellent properties in terms of tensile strength and electromagnetic interference (EMI) shielding effectiveness.

A mechanical part includes a mechanical part body and a conductive part. The mechanical part body includes an insulation part and a carbon fiber filament. The carbon fiber filament is embedded in the insulation part, and a part of the carbon fiber filament is exposed outside the insulation part. The conductive part is at least partially in contact with and electrically coupled to the exposed carbon fiber filament. Because the carbon fiber filament has good conductivity, the conductive part disposed on the mechanical part body and the exposed carbon fiber filament can be conducted, to form a conductive path, so that the carbon fiber filament in the mechanical part may be used as a discharge path of an electrostatic current. In addition, the conductive part in the mechanical part may also be used as a point for electrical connection.

The application provides a magnetic isolation assembly, a magnetic attraction assembly, a wireless charging device and an electronic device. The magnetic isolation assembly comprises a first magnetic isolation member, a second magnetic isolation member arranged on one side of the first magnetic isolation member, the first magnetic isolation member and the second magnetic isolation member having a first gap, and a third magnetic isolation member arranged on the side of the first magnetic isolation member away from the second magnetic isolation member, the first magnetic isolation member and the third magnetic isolation member having a second gap, the first magnetic isolation member, the second magnetic isolation member and the third magnetic isolation member enclosing a receiving groove. When the magnetic isolation assembly is applied to the wireless charging device or the electronic device, the wireless charging efficiency can be improved.

Disclosed are exemplary embodiments of electromagnetic interference (EMI) mitigation materials and EMI absorbing compositions including carbon nanotubes. The carbon nanotubes may comprise single-walled carbon nanotubes, multi-walled carbon nanotubes, and / or carbon nanostructures comprising a branched network of crosslinked carbon nanotube structures. For example, exemplary embodiments may include a composition comprising carbon nanotubes within a polymer resin, whereby the composition is operable for absorbing noise and / or for reflecting signals thereby inhibiting passage or transmission of the signals through the composition. Also, for example, exemplary embodiments may include broadband millimeter wave EMI absorbers comprising carbon nanotubes.

A magnetic shielding assembly includes: a first magnetic shielding member; a second magnetic shielding member, disposed at a side of the first magnetic shielding member, where a first gap is formed between the first magnetic shielding member and the second magnetic shielding member; and a third magnetic shielding member, disposed at a side of the first magnetic shielding member opposite to the second magnetic shielding member, where a second gap is formed between the first magnetic shielding member and the third magnetic shielding member; and the first magnetic shielding member, the second magnetic shielding member, and the third magnetic shielding member cooperatively define a receiving slot.

A magnetic shielding assembly includes: a first magnetic shielding member (10); a second magnetic shielding member (20), disposed at a side of the first magnetic shielding member (10), where a first gap (101) is formed between the first magnetic shielding member (10) and the second magnetic shielding member (20); and a third magnetic shielding member (30), disposed at a side of the first magnetic shielding member (10) opposite to the second magnetic shielding member (20), where a second gap (102) is formed between the first magnetic shielding member (10) and the third magnetic shielding member (30); and the first magnetic shielding member (10), the second magnetic shielding member (20), and the third magnetic shielding member (30) cooperatively define a receiving slot (103).

To overcome the problem that existing magnetic shielding materials struggle to balance saturation magnetic induction and loss characteristics, this invention provides a nanocrystalline magnetic permeable sheet, its preparation method, and a spliced ​​magnetic shielding sheet. The nanocrystalline magnetic permeable sheet is composed of Fe. (100‑x‑y‑z‑α‑β‑γ) Co x Cu y M z Si α B β X γ Wherein, M includes one or more of Nb, V, Mo, Ta, W, Zr, Hf, Ti, Cr, Mn, Al, Sc, Y, Zn, and Sn; X includes one or more of C, Ge, P, Ga, Sb, In, and S; 0.1≤x≤10, 0.2≤y≤1.5, 1≤z≤5, 1≤α≤18, 5≤β≤15, 0≤γ≤3, and satisfies 18≤y+z+α+β+γ≤26; the saturation magnetic induction intensity B of the nanocrystalline magnetic permeable sheet is... s The permeability is 1.25~1.75 T; at a test frequency of 128kHz, the real part of the permeability μ' is 100~10000 and the imaginary part of the permeability μ” is 2~7000; at a test frequency of 360kHz, the real part of the permeability μ' is 95~5500 and the imaginary part of the permeability μ” is 2~5800.

A cryostat comprising an interior volume, cooling means for reducing the temperature of the interior volume to cryogenic temperatures, and at least one coil winding located within the interior volume for generating a magnetic field in the interior volume to counteract the effects of an ambient magnetic field, wherein the coil winding is made from wire having superconducting properties at cryogenic temperatures. In this way, the coil winding can be provided within the cryogenically cooled region without generating heat which can interfere or overload the cooling means. The coil winding can be used to provide active magnetic shielding or to establish a required background magnetic field.

The application discloses a composite heat insulation material with wave absorption performance, a multilayer phase interface structure containing the composite heat insulation material and a preparation method of the multilayer phase interface structure; the composite heat insulation material comprises: a heat insulation material and a wave absorber, wherein the heat insulation material is yttrium zirconium oxide YSZ powder; the wave absorber is samarium iron nitride SmFeN powder; the mass ratio of the heat insulation material to the wave absorber is 1:1; the multilayer phase interface structure containing the composite heat insulation material comprises: a YSZ / SmFeN uniform mixing structure, an interface structure parallel to incident electromagnetic waves, an interface structure vertical to the incident electromagnetic waves and a periodic arrangement interface structure containing both the interface vertical to the incident electromagnetic waves and the interface parallel to the incident electromagnetic waves.

A cooker having a plurality of heat sources and a housing having a cavity formed therein; a door connected to the housing so as to open / close the cavity; a MW heating module for radiating microwaves to the cavity; an IH heating module for radiating a magnetic field toward the cavity; and a shielding member for enabling the magnetic field generated by the IH heating module to pass through, while blocking the microwaves radiated from the MW heating module. The shielding member has carbon fiber.

This invention belongs to the field of electromagnetic materials technology, and discloses a composite microwave absorbing material with a cross-dimensional interpenetrating interface, its preparation method, and its applications. The material comprises, in its thickness direction, a loose fibrous layer, a dense conductive carbon layer, and electromagnetic functional particles anchored to the inner walls of pores, the surface of the layers, and / or the interlayer gaps. The roots of the fibrous carbon extend into and are anchored to the pores and / or interlayer gaps of the framework, forming a cross-dimensional interpenetrating interface to achieve continuous conductive connections and / or local fusion connections. The electromagnetic functional particles are in close contact with the carbon framework, providing magnetic loss and / or dielectric loss. The preparation method includes: employing a stepwise energy beam-induced carbonization strategy on the first and second carbonizable precursor layers to induce the generation of fibrous carbon and in-situ carbonization of the infiltrated portions, achieving interpenetrating anchoring and particle conversion anchoring. This material is suitable for low-frequency absorption-dominant electromagnetic shielding, microwave absorbing patches, and flexible electronic devices.

According to various embodiments, an electronic device can include a first housing, a second housing foldably connected to the first housing by a hinge device, a flexible display disposed to be supported from the first housing through the hinge device to the second housing, and a protection frame disposed on the second housing while an edge of the flexible display is disposed between the protection frame and the second housing, wherein a conductive member can be disposed between the protection frame and the edge of the flexible display based on at least one pattern. In addition, various embodiments can be possible.

Embodiments of this application disclose a middle frame assembly, a foldable display module, and a foldable display device, and relate to the field of foldable screens, to reduce a loss of an antenna. A specific solution is as follows: In a foldable screen device with three or more folds, a baffle is disposed between an antenna and a flexible printed circuit board, and the baffle is electrically connected to a middle frame, so that an electromagnetic wave emitted by the antenna to the flexible printed circuit board is blocked by the baffle. Alternatively, a shield layer is disposed on a surface of the flexible printed circuit board, and the shield layer is electrically connected to the middle frame, so that the electromagnetic wave emitted by the antenna to the flexible printed circuit board is shielded by the shield layer. Therefore, after the foldable screen device is folded, an electromagnetic wave signal that passes through the flexible printed circuit board is blocked, and few electromagnetic wave signals can reach a light emitting layer in a display panel and then be absorbed. This resolves a problem of a signal loss of the antenna.

Provided are an electromagnetic wave shielding material having a magnetic layer containing magnetic particles, in which a scratch cross-sectional area of the magnetic layer is 0.08 μm2 or more and 1.25 μm2 or less, and an electronic component and an electronic apparatus which include the electromagnetic wave shielding material.

A middle frame assembly, a foldable display module, and a foldable display device, the device has three or more folding sections, a baffle is disposed between an antenna and a flexible printed circuit board, and is electrically connected to a middle frame. or a shield layer is disposed on a surface of the flexible printed circuit board, and the shield layer is electrically connected to the middle frame.

The present invention provides a nonwoven fabric with excellent electromagnetic shielding and tensile strength, as well as a cost-effective method for manufacturing the nonwoven fabric. It also provides a composite material containing the nonwoven fabric. [Solution] The present invention relates to a nonwoven fabric, composite material, and method for manufacturing the same, which contain carbon fibers plated with metals including nickel (Ni), copper (Cu), cobalt (Co), zinc (Zn), gold (Au), silver (Ag), chromium (Cr), tin (Sn), palladium (Pd), rhodium (Rh), iron (Fe), or combinations thereof. The composite material manufactured by mixing the carbon fiber nonwoven fabric of the present invention with a resin exhibits excellent physical properties such as tensile strength and electromagnetic wave shielding.

The application discloses a kind of light modules with electromagnetic shielding and heat dissipation function, including upper cover, base and PCB board, also including electromagnetic shielding unit and heat dissipation unit;The electromagnetic shielding unit includes upper plastic wave-absorbing pad and lower plastic wave-absorbing pad, the upper cover, upper plastic wave-absorbing pad, PCB board, lower plastic wave-absorbing pad and base are sequentially adhered and clamped from top to bottom;The heat dissipation unit includes heat dissipation piece and heat sink, the heat dissipation piece includes copper block and heat pipe, the heat pipe includes sequentially distributed condensing section, heat insulation section and evaporation section.In the application, electromagnetic shielding unit and heat dissipation unit are additionally arranged in the interior of high-speed, super-speed type light module, and the core component, PCB board, is arranged in the light module, electromagnetic shielding and heat dissipation treatment are carried out, and the problems of high power generation heat and high frequency EMI leakage of high-speed, super-speed type light module are fundamentally solved.

A noise reduction sheet includes a flexible sheet containing a soft magnetic material, in which a plurality of first grooves extending in a first direction, a plurality of second grooves extending in a second direction, and a plurality of third grooves extending in a third direction are provided on a first surface of the sheet, the first surface is divided into a plurality of regular triangular regions by the first grooves, the second grooves, and the third grooves, and each of the first grooves, the second grooves, and the third grooves has a cross-sectional shape in which a groove width increases toward an opening along a depth direction of the groove.

This disclosure relates to a shielding element for shielding magnetically sensitive devices, particularly quantum devices, from electromagnetic noise. The shielding element includes a wall segment extending through a through-hole in a first direction, wherein the wall segment has at least 10... 5 The relative electromagnetic conductivity in Henry per meter (H / m), wherein the average width of the opening in a plane perpendicular to the first direction is greater than the average length of the wall segment extending in the first direction.

A protective textile coating system includes an inner protective layer, a structural layer, a first adhesive, an electro-magnetic interference (EMI) resistant or EMI blocking layer, and a second adhesive. The first adhesive can be selected, adapted or otherwise configured to bond the protective layer and the structural layer. The second adhesive can be selected, adapted or otherwise configured to chemically react or interact with the EMI resistant layer in order to form a bond between the EMI resistant layer and the structural layer. A protective coated textile product can also be provided, by applying the protective coating to a textile or fabric layer.

Provided is a resin composition that can yield a resin molded article that exhibits an excellent heat dissipation behavior.　The resin composition comprises a thermoplastic resin, graphite, and a fibrous body. This a resin composition for which: when a resin molded article 1 with a length of 100 mm x width of 100 mm x thickness of 2 mm is obtained by carrying out molding by filling the molten resin composition into a mold from the direction orthogonal to the thickness direction of the resulting molded article 1, and when a cross section of the resin molded article 1 is taken by sectioning along the thickness direction Z and the direction X that is parallel to the filling direction and this cross section is divided into 5 equal regions 1A-1E in the thickness direction Z, the average angle of orientation (A) with respect to the surface direction of the graphite in at least one of the surfacemost layer regions 1A and 1E is not more than 15° and the average angle of orientation (B) with respect to the surface direction of the graphite in the middle region 1C is at least 35°.

Proposed are a nonwoven fabric, a composite material, and a method for manufacturing the same, in which the nonwoven fabric includes carbon fibers plated with a metal selected from nickel (Ni), copper (Cu), cobalt (Co), zinc (Zn), gold (Au), silver (Ag), chromium (Cr), tin (Sn), palladium (Pd), rhodium (Rh), iron (Fe), or a combination thereof. A composite material, which is manufactured by blending the nonwoven fabric containing carbon fibers with a resin, exhibits excellent properties in terms of tensile strength and electromagnetic interference (EMI) shielding effectiveness.

Disclosed are exemplary embodiments of patterned electromagnetic interference (EMI) mitigation materials (e.g., EMI absorbers, thermally-conductive EMI absorbers, etc.) including carbon nanotubes. The carbon nanotubes may comprise single-walled carbon nanotubes, multi-walled carbon nanotubes, and / or carbon nanostructures comprising a branched network of crosslinked carbon nanotube structures. For example, an EMI mitigation material may comprise a filled dielectric including a pattern of EMI absorbers. The filled dielectric comprises carbon nanotubes.

Various embodiments of a wireless connector system are described. The system has a transmitter module and a receiver module that are configured to wirelessly transmit electrical energy and / or data via near field magnetic coupling. The wireless connector system is designed to increase the amount of wirelessly transmitted electrical power over a greater separation distance. The system is configured with various sensing circuits that alert the system to the presence of the receiver module to begin transfer of electrical power as well as undesirable objects and increased temperature that could interfere with the operation of the system. The wireless connector system is a relatively small footprint that is designed to be surface mounted.

This invention provides an electromagnetic wave absorbing composite material and its preparation method. The electromagnetic wave absorbing composite material comprises: a polymer composite containing a refractive index adjusting material; and multiple conductive lines formed on at least one surface of the polymer composite. The electromagnetic waves reflected within the matching frequency (f) range derived by mathematical formulas 1 to 3 described in this invention are below 0.2 dB.

An apparatus is provided that includes a first electric device, a second electric device, an electric cable and a cable shield. The electric cable electrically couples the first electric device to the second electric device. The cable shield includes a first metal and a second metal. The first metal has a first permeability and a first impedance. The second metal has a second permeability and a second impedance. The first permeability is greater than the second permeability. The first impedance is greater than the second impedance. The electric cable projects longitudinally, through a bore of the cable shield and along the first metal and the second metal, between the first electric device and the second electric device.

A present description describes heat-shrink fabric tubing (10) for shielding an elongated component against electromagnetic interference, EMI. The heat-shrink fabric tubing comprises electrically conducting warp fibers (100), the warp fibers comprise a non-conductive polyamide core plated with a conductive metal layer, the warp fibers for EMI shielding of the elongated component, the warp fibers extending in a longitudinal extension of the elongated component. Further, the heat-shrink fabric tubing comprises heat-shrinkable weft fibers (200) extending transversely to the electrical conducting warp fibers, the weft fibers for shrinking the fabric tubing in a radial dimension perpendicular to the longitudinal extension. The weft fibers are woven with the warp fibers thereby forming the fabric tubing protection. The weft fibers are cross-linked for creating a memory in the tube so that the fabric tubing shrinks after applying heat.