30results about How to "Realize electromagnetic shielding function" patented technology

A cabinet-type electric connector consists of a plug and a socket; the plug and a shell of the socket are provided with a plurality of cavities for mounting a plurality of corresponding functional modules; and the abutting end of each functional module is provided with a mobile electromagnetic shielding device and a guide positioning device, wherein the mobile electromagnetic shielding device consists of a shielding plate, an elastic shielding reed, an insulating sleeve and a spring. By using a matching form of the mobile shielding plate and the elastic shielding reed, the electromagnetic shielding function after the connector is plugged and separated is well implemented; meanwhile, the arranged guide positioning device can well implement guiding and positioning when the plug is plugged in the socket so as to realize automatic alignment of the connector; and the cabinet-type electric connector has higher mounting error compensation capability, meets the requirements of cabinet-type application occasions, and has stronger practicability.

The invention discloses a shelter wall plate with radar stealth and efficient electromagnetic shielding functions and relates to the technical field of shelters. The shelter wall plate comprises an outer mask, an insulation material layer and an inner mask. The outer mask is a composite laminated board which comprises an outer layer, an intermediate layer and an inner layer, wherein the outer layer is made of wave-transparent composites, the intermediate layer is made of wave absorption carbon fiber cloth, and the inner layer is made of a continuously conductive metal plate. The insulation material layer is a low-density polyurethane rigid foam layer, and the inner mask is a continuously conductive aluminum alloy plate.

The invention relates to a piece of electromagnetic shielding glass and a manufacturing method thereof, specifically, to a piece of light high-intensity electromagnetic windshield glass with an electric heating function and a manufacturing method thereof. A metal grid structure is prepared on a flexible substrate to realize the electromagnetic shielding function; combination with the traditional electric heating glass manufacturing process is carried out to prepare a piece of light high-intensity electromagnetic shield glass. On the one hand, the intensity reduction caused by preparing a low-resistance transparent conductive film on a piece of load-bearing glass is avoided; and on the other hand, the conflict between the high shielding performance and the high light transmittance requirement of the traditional electromagnetic shielding glass is eliminated. The prepared electromagnetic shielding glass has the high light transmittance larger than or equal to 75%, the reduced weight withthe surface density less than or equal to 10kg/m<2>, and the high intensity; the total thickness does not exceed 6.0 mm and the shielding performance is larger than o equal to 40 dB(0.3-18 GHz). And the glass is resistant to the impact by a bird with the weight of 1.0kg at the speed less than or equal to 330km/h without any penetration and piece spatter.

The invention provides an aerogel composite material with a heat insulation and stealth function and a preparation method of the aerogel composite material, and belongs to the technical field of aerogel composite materials. The aerogel composite material comprises a nano-fiber aerogel matrix layer, a nano-fiber aerogel conductive layer and a nano-fiber aerogel heat insulation layer. According to the invention, under the condition of not using an adhesive, the effective fixation of aerogel particles and the tight combination between the base material and each functional layer can be realized by utilizing the unique hydrophilicity and pore structure of the nanofibers, and the heat insulation performance of the base material layer and the heat insulation layer is utilized; the electromagnetic shielding and controllable heat transmission performance of the conducting layer can achieve the heat insulation and electromagnetic infrared double-shielding synergistic function, and the invention has application prospects in the fields of national defense military industry and functional textiles.

The invention discloses an air tightness surface acoustic wave element package structure and a manufacturing method thereof. The package structure comprises an upper glass cover plate array, a lower glass substrate array and a plurality of surface acoustic wave chips; a plurality of the surface acoustic wave chips are attached to the lower glass substrate array; the upper glass cover plate array and the lower glass substrate array are aligned and laminated through an adhesive to form a plurality of cavities; a plurality of upper glass cover plates of the upper glass cover plate array, a plurality of lower glass substrates of the lower glass substrate array, a plurality of surface acoustic wave chip and a plurality of the cavities all correspond to one another; and the surface acoustic wavechips are located in the corresponding cavities. The air tightness surface acoustic wave element package structure and the manufacturing method thereof in the invention simplify packaging of the conventional surface acoustic wave component, and greatly increase the throughput of the process, thereby greatly improving the production efficiency.

The invention discloses an electromagnetic shielding interlayer composite material fragile cover and a preparation method thereof, and belongs to the technical field of missile launching devices. Theelectromagnetic shielding interlayer composite material fragile cover comprises a flange and a throwing body, and the joint of the flange and the throwing body is called as a separation area; the throwing body is made of an electromagnetic shielding interlayer composite material, and is formed by curing and molding a foam interlayer, a metal conductive film and carbon fiber cloth by taking epoxy resin glue as a matrix; the edge of the throwing body is provided with a circle of non-penetrating V-shaped chamfer, and the V-shaped chamfer is filled with the epoxy resin glue, and then is glued withthe edge of the flange to form the separation area. The electromagnetic shielding interlayer composite material fragile cover is simple in structure, high in bearing capacity, light in structural weight and good in stability, and has multiple functions of electromagnetic shielding and the like.

The invention relates to a front shell component and metal front shell structure of electronic equipment. The front shell component and the metal front shell structure can replace electromagnetic shields in the electronic equipment and conduce to reducing the thickness of the electronic equipment. The front shell component comprises the metal front shell structure and a metal sheet, wherein a plurality of through holes corresponding to devices to be shielded on a printed circuit board in the electronic equipment one to one are formed in the metal front shell structure; the metal sheet closes the ends, far away from the printed circuit board, of the plurality of through holes, so that the metal sheet and the plurality of through holes form a plurality of corresponding groove structures; the metal sheet is also electrically connected to the metal front shell structure; and the forming position and dimension of each through hole are matched with the corresponding device to be shielded, so that when the metal front shell structure and the printed circuit board are assembled in the electronic equipment in a mutual fitting manner, the groove structure corresponding to each through hole can contain the corresponding device to be shielded and keeps a preset interval from the contained device to be shielded.

The invention discloses anti-electromagnetic-interference insulating silicone rubber cloth and a preparation method thereof. The anti-electromagnetic-interference insulating silicone rubber cloth comprises a silicone rubber layer and a graphene layer attached onto the surface of the silicone rubber layer, wherein chemical cross-linking and interface grafting of the graphene layer and the siliconerubber layer are realizd through a silane coupling agent KH560. The preparation method comprises the following steps: 1) preparing the silicone rubber layer by using a calendering method, wherein thesilicone rubber layer contains the silane coupling agent KH560; 2) preparing graphene layer slurry, wherein the slurry contains the silane coupling agent KH560; and 3) coating the surface of the silicone rubber layer with the graphene layer slurry to form the graphene layer. According to the invention, the graphene layer with electromagnetic shielding capability is compounded with the heat-conducting and insulating silicone rubber layer, so an insulator function is obtained in a vertical direction, a conductor function is obtained in a horizontal direction and at a graphene electromagnetic shielding layer side, and the functions of insulation, electromagnetic shielding and heat conduction are realized at the same time; moreover, the anti-electromagnetic-interference insulating silicone rubber cloth has excellent external insulation performance, and can meet the external insulation requirements of power equipment or the insulation requirements of a 10-KV electromagnetic field environment.

The invention relates to a plant stealth material and a preparation method thereof, and concretely relates to a loofah sponge stealth material and a preparation method thereof. The plant stealth material is composed of loofah sponge units and an electromagnetic shielding cloth, the loofah sponge units are partially impregnated in a wave absorbing liquid, and the loofah sponge units are distributedand fixed on the upper surface of the electromagnetic shielding cloth. The preparation method comprises the steps of screening, cutting, wave absorbing liquid impregnation, drying, slitting and sewing. The method has a simple process, and is convenient to operate, and the product has a microwave broadband stealth performance, a visible light/near infrared camouflage and thermal infrared stealth function and an electromagnetic shielding performance, and further has the advantages of small density, flexibility, high strength, resistance to high temperature and low temperature, greenness, environmental friendliness and long service life.

The invention discloses a flexible polyurethane-based carbon nano composite electromagnetic shielding material and a preparation method thereof. Polyurethane resin modification formula design is conducted on the basis of uniform array type carbon nanotubes, and a flame retardant, a catalyst, a stabilizer, an anti-aging agent and the like are synchronously added and well dispersed in a polyurethaneresin matrix, the optimal mixing process treatment condition is obtained, and the uniform dispersion of the carbon nanotubes and the electromagnetic shielding function after the carbon nanotubes arecompounded with the resin matrix are realized. Metal materials are not required to be introduced, so that the material is light in weight and corrosion-resistant. Moreover, the polyurethane-based carbon nano composite electromagnetic shielding material can be used in the fields of electronic information and household appliances to effectively shield static electricity and electromagnetic radiation, especially in the frequency range of electromagnetic waves of 2GHz-18GHz.

The invention discloses electromagnetic shielding paint. The electromagnetic shielding paint comprises 40-60 parts of polypyrrole, 2-10 parts of curing agent, 10-30 parts of graphene fiber, 5-15 parts of Fe3O4 microwave absorbent and 2-5 parts of color dye, wherein graphene fiber bundles are used as graphene fiber and vertically dispersed in polypyrrole to form a uniformly-spaced array, and the Fe3O4 microwave absorbent is uniformly dispersed in epoxy resin. The electromagnetic shielding paint has high electromagnetic shielding performance and high heat dissipating performance.

The invention relates to a preparation method of an automobile flame-retardant battery case upper cover with electromagnetic shielding function. A PET modified material is employed to prepare the flame-retardant battery case upper cover, and the PET modified material includes the following components by weight percentage: 65-75wt% of PET, 5-20wt% conductive fiber, 3-6wt% of hollow microbeads, 8-13wt% of a flame retardant, 1-3wt% of a toughening agent, and 0.5-2wt% of a processing aid. The method includes the steps of: a. blending the raw materials PET, conductive fiber, hollow microbeads, theflame retardant, the toughening agent and the processing aid evenly in a formula ratio, and then performing extrusion to obtain a PET modified material blank; and b. putting the prepared blank into amould, applying certain pressure by a hydraulic machine, and conducting mould pressing to obtain the automobile flame-retardant battery case upper cover. The new energy automobile flame-retardant battery case upper cover prepared from the above material by the method provided by the invention has advantages of excellent electromagnetic shielding function, low density, high flame retardance and excellent mechanical strength.

The invention discloses a photoelectric hybrid cable for water Cherenkov detector arrays. Through compositing an optical cable and an electric cable, the photoelectric hybrid cable is capable of satisfying the data transmission and power supply requirements of water Cherenkov detectors and preventing underwater mooring ropes from knotting, so that the photoelectric hybrid cable is suitable for water Cherenkov detector arrays; an armor layer formed by steel wire braiding is arranged to realize an electromagnetic shielding function, so that the electromagnetic interference resistance is greatlyimproved and the hybrid cable is effectively prevented from ageing failure; an aramid yarn layer is coated outside the optical cable, the electric cable can be prevented from extruding the optical cable to damage optical fibers, so that the pressure resistance is improved; and an aramid fiber rope is arranged to serve as a reinforcing core, so that the tensile property can be improved.

The invention discloses an electromagnetic shielding cabinet frame, which comprises a plurality of stand columns, a plurality of cross beams and a plurality of longitudinal beams, wherein the stand columns, the cross beams and the longitudinal beams are connected in a pairwise perpendicular mode to form the frame, and joints of the two ends of each stand column, joints of the two ends of each cross beam and joints of the two ends of each longitudinal beam are bent, embedded and welded to one another; and the joints of the two ends of each stand column, the joints of the two ends of each crossbeam and the joints of the two ends of each longitudinal beam are connected in a full welding mode. The electromagnetic shielding cabinet frame has good continuity and sealing performance, can effectively avoid electromagnetic gap leakage, can guarantee the overall strength and rigidity, safety, stability and anticorrosion protection of the cabinet, has certain compatibility and flexibility, is suitable for an electromagnetic shielding function cabinet, and has the advantages of being simple and reliable in structure, easy to machine, economical in cost and the like.

The invention discloses an electromagnetic shielding coating. The electromagnetic shielding coating comprises 40 to 60 parts of polypyrrole, 2 to 10 parts of a curing agent, 10 to 30 parts of a sulfonated graphene-polyaniline composite fiber, 5 to 15 parts of Fe0.5Ni0.4Co0.1 powder microwave absorbent, and 2 to 5 parts of a color dye; wherein the sulfonated graphene-polyaniline composite fiber is added in the form of sulfonated graphene-polyaniline composite fiber bundles, and the sulfonated graphene-polyaniline composite fiber bundles are vertically dispersed in polypyrrole so as to form an array with equal distances, and the Fe0.5Ni0.4Co0.1 powder microwave absorbent is uniformly dispersed in epoxy resin. The electromagnetic shielding coating possesses excellent electromagnetic shielding performance and heat dissipation performance.

A high-transmittance flexible manganin meter with an electromagnetic shielding function comprises a substrate, a sensitive element and electrodes are arranged on the substrate, the input end and the output end of the sensitive element are connected with the two electrodes respectively, and packaging layers are arranged on the surfaces of the sensitive element and the electrodes; the sensitive element is made of manganese-copper foil, and the thickness is 5 microns; the electrodes and the sensitive element are of an integrated structure and are made of the same manganese-copper foil through a laser engraving or chemical corrosion process; the substrate and the packaging layers are sandwich structures, the middle layer is a PI/silver nanowire composite film with the thickness of 25 microns, the upper layer and the lower layer are ceramic films with the thickness of 1 micron, and the ceramic films are formed on the surface of the middle layer through an MEMS sputtering process; the substrate, the packaging layers, the electrodes and the sensitive element form the manganin meter through a hot-pressing packaging process. The manganin meter can shield electromagnetic radiation interference and avoid a high-voltage bypass effect, and has the characteristics of high temperature resistance, high light transmission, fast response, flexibility, thinness, suitability for micro-scale charge detonation pressure measurement and the like.