480 results about "Silicone grease" patented technology

The invention relates to the technical field of optical communication, in particular to an optical module cooling system which comprises a switch shell, a PCB, a socket, a radiator and a lifter, and the PCB, the socket, the radiator and the lifter are arranged in the switch shell. A cage is arranged in the switch shell; the PCB is arranged at the bottom end of the cage; the socket is arranged in the cage and is connected with the PCB; an opening is formed in the top end of the cage; the lifter is connected with the radiator so as to drive the radiator to vertically pass through the opening; and a heat-conducting silicone grease layer is arranged on the bottom surface of the radiator. The radiator is not in direct contact with the optical module, the heat-conducting silicone grease layer is filled between the radiator and the optical module, the radiator is in hard contact with the shell of the optical module through the heat-conducting silicone grease layer, a gap between abutting faces is effectively eliminated or reduced, air reserved in the gap is reduced, and therefore heat resistance between the radiator and the shell of the optical module is reduced, and the service life of the optical module is prolonged. And the heat exchange efficiency is improved.

The utility model discloses a tool structure for assembling and disassembling a cold plate. The cold plate mounting and dismounting tool structure comprises a base and a main body, the main body is placed on the base, the main body is provided with a positioning block, a grabbing assembly and a spring pressing buckle, the main body is provided with a containing cavity used for containing an SDI card cold plate and a mounting cavity of a liquid cooling connector, the spring pressing buckle is used for fixing the SDI card cold plate and the liquid cooling connector, and the grabbing assembly is used for fixing a CPU cold plate. According to the utility model, the main body is fixed on the case of the liquid cooling server, the grabbing assembly grabs the CPU cold plate, the spring pressing buckle fixes the SDI card cold plate and the liquid cooling joint, after the whole set of cold plate is fixed on the main body, the main body is taken up, the whole set of cold plate is dismounted from the case, and the main body is overturned and placed on the base so as to coat the radiator silicone grease; and then the main body is fixed on the case, and the cold plates are loaded into the case one by one, so that the whole set of cold plates can be assembled and disassembled by one person, and the operation and maintenance efficiency of the server is improved.

The invention provides high-temperature-resistant heat-conducting silicone grease. The high-temperature-resistant heat-conducting silicone grease comprises the following components in parts by weight: 100 parts of methyl phenyl silicone oil, 300-1000 parts of modified heat-conducting powder and 0.5-3 parts of a heat-resistant additive, wherein the viscosity of the methyl phenyl silicone oil at 25 DEG C is 50-500 mPa.s, and the phenyl content of the methyl phenyl silicone oil is 25-50%. By adding the combination of the methyl phenyl silicone oil and the heat-resistant additive, molecular chain breakage of an organic silicon-based material in a high-temperature environment can be inhibited, so that the durability of the silicone grease is ensured, the service time in the high-temperature environment is longer, and the high-temperature resistance of conventional heat-conducting silicone grease is improved.

The utility model discloses a pulsed magnetic field stimulator with a temperature protection function, and relates to the technical field of medical equipment. The pulse magnetic field stimulator comprises a shell, a pulse magnetic field stimulator body, a cooling cover, a liquid tank and a refrigeration assembly, the pulse magnetic field stimulator body is fixedly installed in the shell through a support, the cooling cover is arranged outside the pulse magnetic field stimulator body in a covering mode, and heat conduction silicone grease is arranged between the cooling cover and the pulse magnetic field stimulator body. A cooling cavity for cooling liquid circulation is formed in the cooling cover, and the liquid inlet end and the liquid outlet end of the cooling liquid cavity are communicated with a liquid conveying pipe and a liquid discharging pipe through connecting nozzles respectively. The situation that the device is overheated due to long-time work is avoided, and heat on the surface of the pulsed magnetic field stimulator body is taken away through circulation of the cooling liquid.

The invention relates to the technical field of detection circuits suitable for various electricity utilization information acquisition terminals, and discloses a detection circuit method suitable for various electricity utilization information acquisition terminals. The method comprises the following steps: setting an environment temperature, calibrating a shunt resistor and a thermistor, constructing a three-order resistance-temperature mapping relation, and calculating thermal resistance and thermal response characteristics to realize accurate modeling; a thermistor is attached to a shunt resistor, heat-conducting silicone grease is added to form a thermal coupling structure, voltage is collected through a constant current source and a differential amplifier, a resistance value is converted into temperature in real time, instantaneous current is inversely calculated based on a heat balance equation, then energy integration and grade judgment is completed, and various electrical parameter indexes are output. According to the method, modeling, collection, conversion and inversion processes are integrated, a complete thermal-electric detection link is constructed, a traditional current sensor is not needed, and the method has the advantages of being compact in structure, low in cost, flexible in deployment and the like and is suitable for a low-power-consumption distributed terminal.

The invention relates to the field of heat-conducting silicone grease, in particular to high-reliability heat-conducting silicone grease and a preparation method and application of the high-reliability heat-conducting silicone grease. The surface of the sheet-shaped heat-conducting filler is subjected to interfacial compatibility treatment; the surface of the spherical filler is provided with a reaction passivation layer for preventing the spherical filler from reacting with the organic silicon substrate; the surface of the nanoscale carbon material contains polar functional groups capable of forming a physical cross-linked network with the steric hindrance functional groups; the sheet-shaped heat-conducting filler, the spherical filler and the nanoscale carbon material are synergistically constructed to form a three-dimensional heat-conducting network. Through the three-dimensional heat conduction network constructed cooperatively, the overall heat conduction coefficient of the material is remarkably improved, and the heat dissipation requirement of a high-power-density electronic device can be met. Meanwhile, the migration of silicone oil is inhibited by utilizing a steric hindrance functional group, the side reaction of an interface is blocked by utilizing a reaction passivation layer, and the structural stability is enhanced by utilizing a physical cross-linked network, so that the oil seepage rate in a high-temperature environment is greatly reduced.

According to the invention, a polyether modified polysiloxane and polyether emulsified silicone grease composition is used as an oil phase for emulsion preparation, and hydrophilic silicon dioxide is dispersed in a polyacrylate aqueous solution at a high speed to be used as a water phase for emulsion preparation. The hydrophilic silicon dioxide is stably dispersed in a water phase in the form of fine particles due to the thickening and stabilizing effects of the polyacrylate. In emulsion preparation, the emulsion has excellent stability due to a net structure formed by hydrogen-bond interaction among hydroxyl groups on the surface of hydrophilic silicon dioxide, nanoscale polyether modified polyacrylate latex introduced by compounding in the later stage is adsorbed on the surfaces of particles in the emulsion, demulsification caused by particle aggregation is prevented, and the dispersion stability of the defoaming agent is further enhanced. Besides, the used hydrophilic white carbon black, polyacrylate and polyether modified polyacrylate almost have no influence on the clarity of the liquid detergent, and the silicone polyether emulsified silicone grease composition is combined, so that the compatibility of the silicone grease composition and the liquid detergent is increased, and meanwhile, the clarity of the liquid detergent is also ensured.

The invention relates to the field of ultraviolet sterilization systems, in particular to an integrated ultraviolet sterilization system utilizing a UVC deep ultraviolet chip, which comprises a UVC deep ultraviolet chip lamp bead module serving as a core light source to emit deep ultraviolet light for sterilization; the self-adaptive heat dissipation module is attached to the UVC deep ultraviolet chip lamp bead module through heat conduction silicone grease and used for dynamically guiding out heat of the UVC deep ultraviolet chip lamp bead module; and the optical power closed-loop driving module is electrically connected with the UVC deep ultraviolet chip lamp bead module and is used for outputting stable current and performing feedback regulation according to optical power. According to the integrated ultraviolet sterilization system using the UVC deep ultraviolet chip, the high efficiency is remarkably improved: the NPSS + superlattice insertion layer enables the electro-optical conversion efficiency to be improved to more than 8%, and the deep ultraviolet light of 265-275 nm is 1t; the inactivation rate of escherichia coli and influenza viruses within 1 minute reaches 99.99%, and the disinfection and killing efficiency is improved by 30% compared with that of existing equipment.

The invention relates to a preparation method of a polysiloxane defoaming composition. The polysiloxane defoaming composition is prepared from silicone grease, a polyether-polysiloxane copolymer, a surfactant and polyether. The silicone grease is prepared from the following raw materials: branched polysiloxane, hydrogen-containing polysiloxane, silicon dioxide, a TQ polymer, an addition catalyst and an inhibitor; the polyether-polysiloxane copolymer is prepared from hydrogen-containing silicon resin with a spatial structure, diallyl alcohol polyether and allyl polyether through a reaction. The polysiloxane defoaming agent composition obtained by the invention has the characteristics of excellent foam control and easiness in cleaning.

This utility model discloses a high-temperature resistant cooling circulation structure for a fluoroplastic magnetic pump, specifically relating to the field of magnetic pumps. It includes a base, pump body, pump cover, connecting frame, isolation sleeve, inner magnetic rotor, outer magnetic rotor, motor, and impeller. The isolation sleeve, inner magnetic rotor, and outer magnetic rotor are all housed inside the connecting frame. The high-temperature resistant cooling circulation structure of this fluoroplastic magnetic pump features a spiral cooling channel inside the isolation sleeve. The coolant flows directly through the core area of ​​the heat source, rapidly absorbing heat transferred by magnetic eddy currents and high-temperature media through forced convection, thus improving cooling efficiency and effectively blocking heat transfer to the outer magnetic rotor, preventing permanent magnets from demagnetizing and failing due to high temperatures. Copper-nickel alloy heat-conducting fins are welded to the inner wall of the isolation sleeve, combined with a layer of thermally conductive silicone grease, accelerating the conduction of heat from the inner magnetic rotor to the cooling channel. A vacuum cavity is provided between the spiral cooling channel and the outer wall of the isolation sleeve to suppress heat conduction to the outer magnetic rotor, achieving double thermal isolation.

This invention relates to the field of cable technology and discloses a safety early warning cable with temperature sensing. The cable includes a wrapping layer containing multiple insulated power wire cores, a protective layer outside the wrapping layer, a first vibration sensing element within the protective layer, and an isolation layer between the wrapping layer and the protective layer. By incorporating a spiral metal sheath within each conductor, with thermally conductive silicone grease filling the space between the sheath's inner wall and the temperature-sensing optical fiber, rapid and direct monitoring of the conductor's core temperature is achieved. Simultaneously, heat is transferred through the conductor's copper wires in the spiral microgrooves, the thermally conductive metal strip on the surface of the insulation layer, and the thermally conductive material in the filling layer to the multimode optical fiber core in the multi-core sensing cable, forming redundant temperature measurement channels. When the temperature of a conductor is abnormal, the corresponding temperature-sensing optical fiber and the multimode optical fiber core can be cross-verified, effectively avoiding false alarms caused by single-point faults or poor local contact, significantly improving temperature measurement reliability and response speed.

The utility model discloses a power device heat-conducting silicone grease smearing tool, which belongs to the technical field of power device production auxiliary equipment and comprises a mounting box body, a fixing plate fixedly mounted at the top of the mounting box body, a power device body arranged at the top of the fixing plate, and a turntable rotatably mounted at the bottom of the fixing plate. Four groups of moving plates are slidably mounted in the fixed plate, connecting plates are fixedly mounted at the tops of the four groups of moving plates, clamps are fixedly mounted on one sides of the four groups of connecting plates, and supporting rods II are fixedly mounted at the bottoms of the four groups of moving plates, so that self-centering clamping of four surfaces of the power device body is realized; the multi-direction clamping mode can stably fix the power device from all angles, no matter how the initial placement position of the power device is, the power device can be automatically adjusted to the center position of the tool and is firmly fixed, the conditions of deviation, shaking and the like of the power device in the heat-conducting silicone grease smearing process are effectively avoided, and the working efficiency is improved. And the smearing operation can be stably carried out.

The invention discloses a preparation method and application of a graphite flake diamond complex. The preparation method comprises the following steps: mixing diamond micro-powder, crystalline flake graphite, copper powder, sodium chloride, potassium chloride and titanium powder according to a certain proportion, co-firing at 880-1050 DEG C for 30-60 minutes, cooling, taking out a mixed co-fired sample, and fully cleaning with deionized water to obtain the graphite flake diamond complex (GD); mixing GD, a silane coupling agent and absolute ethyl alcohol according to a certain proportion, magnetically stirring for 60-120 minutes at the temperature of 60-80 DEG C, and preserving heat for 6-12 hours at the temperature of 100-200 DEG C to obtain a silane coupling agent surface modified graphite flake diamond complex (GDSM); and then, uniformly mixing the GDSM and dimethyl silicone oil according to a certain proportion, putting the mixture into a vacuum drying oven, carrying out vacuum-pumping heat preservation at 80-120 DEG C for 120-360 minutes, cooling to room temperature, and taking out to obtain the graphite flake diamond composite heat-conducting silicone grease which can be applied to the field of interface heat management of high-power devices.

The invention discloses a pulse tube refrigeration device based on a semiconductor refrigeration ring. The device comprises a compressor, a precooler, a heat regenerator, a cold-end heat exchanger, a pulse tube, a hot-end heat exchanger, a reducing cavity, an adjusting tube and an air reservoir which are communicated in sequence. The semiconductor refrigeration sleeve is arranged outside the heat regenerator, and the surfaces of the semiconductor refrigeration sleeve and the heat regenerator are tightly attached. The semiconductor refrigeration sleeve is formed by overlapping a plurality of annular semiconductor refrigeration sheets, the hot surface of each semiconductor refrigeration sheet faces upwards, the cold surface of each semiconductor refrigeration sheet faces downwards, and the cold and hot surfaces of every two adjacent semiconductor refrigeration sheets are connected through heat-conducting silicone grease. Temperature sensors are arranged at the top and the bottom of the semiconductor refrigeration sleeve to monitor the temperature difference in real time, and the control system adjusts the input current of the semiconductor refrigeration piece and adjusts the refrigeration power of the semiconductor refrigeration piece. Through the stacked structure of the semiconductor refrigeration rings, step-by-step reduction of the temperature is achieved, the cooling efficiency is remarkably improved, and accurate temperature control can be conducted. The device is compact in structure, high in reliability and suitable for the working environment with the high requirement for equipment stability.

The invention discloses a droplet nanometer friction / photo-thermoelectric hybrid power generation device and a preparation method thereof. The hybrid power generation device comprises a liquid drop power generator part and a photo-thermal power generator part, wherein the liquid drop power generator part is mainly formed by integrating a capacitor and liquid drop friction power generation, and the photo-thermal power generator part is mainly composed of a temperature difference semiconductor. The preparation method of the device mainly comprises the following steps: carrying out surface treatment on a zinc sheet, so that a layer of candle ash is uniformly attached to the surface of the zinc sheet to obtain the treated zinc sheet; uniformly coating a layer of polydimethylsiloxane (PDMS) on the surface of the candle ash, and heating in an oven for two hours for curing and forming; fixing a copper electrode on the surface of the PDMS, and welding a lead on the copper electrode and the zinc sheet; the temperature difference semiconductor and the zinc sheet are combined together through heat-conducting silicone grease; a radiation cooling plate is attached to the cold end of the temperature difference semiconductor; and wires are respectively welded at the hot end and the cold end of the temperature difference semiconductor. The droplet nanometer friction / photo-thermoelectric hybrid power generation device provided by the invention is simple in structure and convenient to manufacture, can continuously and stably output direct current voltage without depending on single weather, and has a wide application prospect.

The invention relates to the technical field of cables, in particular to a high-strength light weather-proof cable for an unmanned aerial vehicle and a preparation process of the high-strength light weather-proof cable. According to the invention, the insulating layer, the aramid silicone grease sheath layer and the polyethylene sheath layer are sequentially coated outside the conductor, so that the finished high-strength light weather-proof cable for the unmanned aerial vehicle is obtained. The preparation process of the polyethylene sheath comprises the following steps: mixing linear low-density polyethylene, an irradiation cross-linking agent and flame-retardant POSS (Polyhedral Oligomeric Silsesquioxane), and pre-irradiating to obtain pre-treated polyethylene; and mixing the pretreated polyethylene, high-density polyethylene resin, polyolefin elastomer resin, weather-resistant modified carbon nanotubes and magnesium calcium carbonate, and carrying out high-temperature blending and extrusion molding to obtain the polyethylene sheath. The finished product prepared by the invention has excellent weather resistance and flame retardance, and also has high strength, bending resistance and electromagnetic interference resistance, thereby having wide application prospects in the technical field of cables.

The utility model relates to the field of LED substrate processing discloses LED substrate heat conducting silicone grease fixture, including fixed frame, the fixed frame is located the top surface of base, the inside fixed installation board of fixed frame, the top surface of installation board is equipped with two fixed holes, the inside fixed metal round plate of fixed hole, the top surface of metal round plate is equipped with a plurality of smearing holes, the top surface of base is detachably provided with the placing plate, the top surface of placing plate is equipped with two containing grooves. In the utility model, scrape the heat conducting silicone grease on the metal round plate, the heat conducting silicone grease will be filled into the inside of smearing hole, through the limitation of smearing hole inside space, can accurately control the amount of heat conducting silicone grease every time smearing, thereby ensuring the consistency of smearing thickness.

The invention provides heat-conducting silicone grease for spaceflight electronic equipment and a preparation method of the heat-conducting silicone grease. The heat-conducting silicone grease is prepared from the following components in parts by weight: 3-8 parts of ethyl silicone oil with the viscosity of 50-1000 mPa.s, 3-8 parts of phenyl silicone oil with the viscosity of 50-1000 mPa.s, 1-5 parts of modified silicone oil, 60-80 parts of zinc oxide with the particle size of 2-7 microns and 15-25 parts of zinc oxide with the particle size of 0.1-1 micron. The invention aims to provide the heat-conducting silicone grease which has high heat-conducting property, good low-temperature resistance and cosmic ray resistance and is stable and reliable, so that the heat dissipation requirement of spaceflight electronic equipment in an extreme space environment is met, and the effective thermal design of the prepared heat-conducting silicone grease can greatly prolong the service life of a spacecraft and improve the working reliability of the spacecraft.

The invention relates to the technical field of insulated cables, in particular to a high-temperature-resistant overhead insulated wire, which comprises a core body, an insulating layer and a high-temperature-resistant layer which are sequentially arranged from inside to outside, the core body is coated with the inner layer; the inner layer is sleeved with the annular framework, and a plurality of pipe grooves are annularly formed in the annular framework in the circumferential direction; the heat dissipation unit is accommodated in the pipe groove; the outer layer is coated outside the annular framework; the heat dissipation unit comprises a hollow cylinder and a spiral cooling pipe, a spiral groove is formed in the outer surface of the cylinder, and the spiral cooling pipe is embedded in the spiral groove; a plurality of through holes are formed in the wall part of the column body; and a guide piece is arranged in the pipe groove. According to the high-temperature-resistant overhead insulated wire, heat-conducting silicone grease is forced to overflow through rotary installation of the column body, and the column body is combined with the third filling layer to form a heat conduction function, so that the contact thermal resistance between the spiral cooling pipe and the external environment is greatly reduced, the heat dissipation efficiency is ensured to be maximized, and heat generated during operation of the conductor is actively taken away through a built-in liquid cooling system.

The utility model relates to the field of routers, and discloses a 5G router device for electric power communication, which comprises a device body, the outer wall of the device body is provided with a heat dissipation plate, the side wall of the heat dissipation plate is provided with a notch, the surface of the heat dissipation plate is provided with heat dissipation holes in a penetrating manner, the inner wall of the notch is slidably connected with a moving block, and the outer wall of the moving block is provided with a chute. A sliding block is slidably connected to the inner wall of the sliding groove, a connecting shaft is rotatably connected to the outer wall of the sliding block, a thin-wall scraper is fixedly connected to the outer wall of the connecting shaft, and a spring is fixedly connected to the side wall of the sliding block. According to the utility model, the heat dissipation plate, the notches, the heat dissipation holes and other structures are arranged, so that the heat dissipation plate can be conveniently smoothed or scraped off when being coated or replaced with heat-conducting silicone grease, and the covering uniformity of the heat-conducting silicone grease is ensured, thereby preventing the heat dissipation efficiency from being reduced due to a small gap between the heat dissipation plate and the internal heat dissipation block, and improving the use stability of equipment.

The invention relates to the technical field, and discloses a wearable bracelet device for early warning of diabetes mellitus, which comprises a shell and wrist straps arranged on two sides of the shell, a touch display screen is fixed above the shell, and the wearable bracelet device further comprises an air suction cover fixed on the shell; the air filtering piece is fixed in the air suction cover; the upper part of the air inlet pipe is fixed on the suction hood; the inlet end of the outer side of the vortex tube is fixed below the air inlet tube and is spirally arranged upwards; the water condensing piece is fixed at the bottom in the shell; dust and water vapor in gas are removed through cooperation of multiple assemblies, the accuracy and reliability of acetone concentration detection are greatly improved, a filter plate filters air entering the suction hood in advance, dust and impurities are completely removed, and for water vapor in exhaled gas, a semiconductor chilling plate efficiently transmits cooling capacity to a vortex tube by means of silicone grease in an outer rubber ring, so that the concentration of acetone is effectively detected. The temperature in the pipe is suddenly reduced, water vapor is condensed into water drops, detection errors caused by dust and water vapor are avoided, and false high or false low concentration prompt is prevented.

The application discloses a kind of circuit board for automobile intelligent braking and production process thereof, including circuit board body, the circuit board body includes circuit substrate, the surface of the circuit substrate is bonded with heat conduction even heat plate, and even heat plate is provided with oxidation-resistant film, the surface of the oxidation-resistant film is coated with corrosion-resistant layer, the place of concentrated heat on circuit board is evenly conducted to other positions of circuit board by the heat conduction of even heat plate, and when the temperature of circuit board surface is higher, the heat of circuit board surface can be conducted to isolation groove by heat-conducting silicone grease, and when the temperature of circuit board surface is lower, the temperature of circuit board surface can also be made more balanced, so that the temperature range that the circuit board can adapt is larger, and by forming oxidation-resistant layer and corrosion-resistant layer on the surface of circuit board body, the service life of the circuit board in harsh environment can be improved.

The utility model provides a totally-enclosed liquid crystal display adopting conduction heat dissipation, which belongs to the technical field of liquid crystal displays and comprises an aluminum alloy display screen main body, a power supply module, a liquid crystal display control mainboard, a display module and a display rear shell, according to the aluminum alloy display screen body, an aluminum alloy frame and a back plate are bonded through heat conduction silica gel to wrap a display module, and a metal shell of the display module is bonded with a display screen back plate through heat conduction silica gel. According to the utility model, based on a conduction heat dissipation principle, that is, heat is spontaneously transferred from a high-temperature object to a low-temperature object, in a high-power totally-enclosed module, heat generated by a heating element is rapidly transferred to a casing back plate and a frame through a heat-conducting medium (such as heat-conducting silicone grease and a heat-conducting pad), and the casing back plate and the frame are made of metal materials with high heat conductivity coefficients, so that the heat dissipation efficiency is greatly improved. And the heat dissipation area is large, so that the heat can be quickly dissipated into the air, and a good heat dissipation effect is realized.

The utility model relates to the technical field of filters, in particular to a 5G communication filter module with a heat dissipation structure, which is characterized in that a heat conduction copper cover is arranged at the top of a working center, heat dissipation fins are uniformly arranged at the top of the heat conduction copper cover, and heat conduction silicone grease is filled between the heat conduction copper cover and the working center. The heat generated by the working center during working can be timely transmitted to the heat dissipation fins for heat dissipation, meanwhile, the heat dissipation fans are arranged on the two sides of the heat dissipation fins, the height of the heat dissipation fans is flush with that of the heat dissipation fins, the heat dissipation fans face gaps of the heat dissipation fins, flowing of air in the heat dissipation fins can be accelerated by starting the heat dissipation fans, and the heat dissipation efficiency is improved. Heat on the heat dissipation fins is taken away in time, it is guaranteed that heat of the working center can be effectively dissipated, and the working efficiency of the working center is improved.

The utility model relates to the technical field of conference control equipment, in particular to multifunctional conference centralized control equipment which comprises a protection box, a protection cover is installed at the bottom end of the protection box through bolts, a rubber strip is fixedly installed on one side of the protection cover, a cavity is formed after the protection box and the protection cover are fixed, a control mainboard is fixed through bolts, and the protection box and the protection cover are fixed through bolts. A heating point of the control main board is attached to the vapor chamber through heat conduction silicone grease, the heat dissipation end of the vapor chamber is connected with the refrigeration end of the semiconductor board through heat conduction silicone grease, the heating end of the semiconductor board faces the heat dissipation window, and an exhaust fan is installed on the heat dissipation window through bolts. According to the utility model, the semiconductor chilling plate and the vapor chamber are used for cooperative heat dissipation, the diagonal air duct and the multilayer filter screen are combined, the temperature stability under high load is maintained, the dust retention is reduced, the problems of low efficiency and frequent maintenance in the traditional scheme are solved, the standby power supply can be seamlessly switched during power failure due to the dual-power-supply redundancy design, conference interruption is avoided, and the service life of the conference is prolonged. And the anti-voltage fluctuation reliability of equipment is improved.

The application relates to the technical field of thermal interface materials, and discloses a processing method of a self-generated metal-graphene composite thermal interface material, which is applied to chip processing, wherein graphene and derivatives thereof, metal salt, ceramic high-thermal-conductivity particles and a reducing agent are added into water or an alcohol solvent, mixed liquid A is obtained through dispersion treatment, at least one of silicon grease or silicon resin is added, slurry B is obtained through dispersion treatment, the slurry B is coated on the heat dissipation surface of a chip to be processed and covers the heat dissipation fin, heating is triggered to trigger a reaction and the heating is kept until drying, the solvent volatilizes in the drying process, metal is generated between the heat dissipation surface and the heat dissipation fin, until the solvent is completely volatilized, and the heat dissipation fin is fixed on the heat dissipation surface of the chip. The metal salt is reduced into nano metal particles by the reducing agent, the nano metal particles are filled between the graphene grids, and a nano metal composite graphene thermal interface material is formed.

The invention discloses an integrated efficient heat dissipation baseband structure for a spaceflight measurement and control transponder, and particularly relates to the technical field of spaceflight measurement and control transponders, the integrated efficient heat dissipation baseband structure comprises a circuit board, a chip and a main heat dissipation substrate, the surface of the circuit board is provided with a positioning mechanism connected with the main heat dissipation substrate, and the circuit board is connected with the main heat dissipation substrate through the positioning mechanism and the main heat dissipation substrate. The main heat dissipation substrate is bonded on the plurality of groups of chips through heat conduction epoxy resin, so that the installation of the main heat dissipation substrate is completed, the heat of the chips can be conducted through the main heat dissipation substrate, and the heat can be dissipated from a path from a chip tube core to a chip shell to the main heat dissipation substrate to an external environment; according to the invention, at least one contact interface (heat-conducting silicone grease layer) with high heat resistance is reduced, the total heat resistance is obviously reduced, the heat dissipation efficiency is greatly improved by shortening a heat-conducting path and eliminating the heat resistance of a key interface, the system can reach a heat balance state more quickly due to the reduction of the heat resistance, and the heat stability of a single machine under transient power change is improved.

The invention relates to the field of heat-conducting silicone grease, and discloses low-thermal-resistance heat-conducting silicone grease and a preparation method thereof. The heat-conducting silicone grease with low thermal resistance is prepared from the following raw materials in parts by weight: 100 to 120 parts of silicone oil polymer, 135 to 150 parts of heat-conducting filler, 4 to 6.5 parts of methylcyclosiloxane, 2 to 4 parts of alkyl alkoxy silane and 0.2 to 0.4 part of lubricating additive, the silicone oil polymer is prepared from trimethyl trivinyl cyclotrisiloxane, vinyl terminated polydiphenyl siloxane-polymethylvinyl siloxane block polydimethylsiloxane, trimethylolpropane diallyl ether, hydrogen-containing silicone oil and a platinum catalyst through a reaction. The heat-conducting silicone grease prepared by the invention has relatively good thixotropy, heat conductivity and low-heat-resistance stability, and silicone oil is not easy to separate out in a long-term cold and hot cycle use process.

The utility model relates to the technical field of outdoor tables, and provides an extensible function combination portable outdoor table which comprises a placing table, a table top, a table top and a table top, the placing table comprises a first folding plate and a second folding plate, and the first folding plate is hinged to the second folding plate; the bottom of the placing table is fixedly connected with a plurality of groups of hinging pieces, one side of each hinging piece is provided with a supporting piece, the surface of the placing table is provided with a mounting groove, the inner wall of the mounting groove is fixedly connected with a solar power generation panel, and the surface of the solar power generation panel is provided with an acrylic plate. The structure is reasonable, a user places food or beverage in the heat preservation cover, the temperature of the copper sheet is reduced through the refrigeration face of the semiconductor refrigerator via heat conduction silicone grease, meanwhile, the heat preservation cover is placed on the sealing ring on the surface of the placement table, a closed space is formed, and the food and beverage are refrigerated.

The utility model relates to the field of igniter discloses a heat dissipation structure and high energy igniter. It includes shell, circuit board and heat dissipation component, and circuit board installs in the inside of shell, and the voltage increasing voltage transformation module is electrically connected on the circuit board, and the heat dissipation component includes copper sheet and heat dissipation piece, and the heat dissipation piece is aluminium material, and one side of copper sheet is pasted with the outer wall of voltage increasing voltage transformation module, and the other side is pasted with heat dissipation piece, and the side of heat dissipation piece far from copper sheet passes through shell and exposes in the air, and both sides of copper sheet pasted with voltage increasing voltage transformation module and heat dissipation piece all have daubed with heat -conducting silicone grease. The utility model discloses through heat dissipation component can make the heat of voltage increasing voltage transformation module promptly get dissipation;The heat dissipation effect of heat dissipation component is higher;The cost of igniter is low.