28results about How to "Good insulation properties" patented technology

The utility model discloses a bending-resistant two-layer twisted marine symmetrical fireproof communication cable, which comprises an outer-layer cable core body formed by uniformly distributing eight twisted-pair cable cores at intervals in the circumferential direction through an EPDM (Ethylene-Propylene-Diene Monomer) isolation core frame, and the center part of the EPDM isolation core frame is provided with a center hole. Four twisted-pair wire cores and PP resin filling core strips are twisted and jointly wrap an inner longitudinal wrapping layer of a modified silicone rubber ceramic mica fire-resistant composite belt to form an inner-layer wire core body, and the inner-layer wire core body is sleeved with the center hole. And a nylon tape wrapping layer, a copper wire braided shielding layer, a low-smoke halogen-free polyolefin inner sheath layer, a modified silicone rubber ceramic mica fire-resistant composite tape outer longitudinal wrapping layer, a high-temperature glass fiber wire wrapping layer and a low-smoke halogen-free polyolefin outer sheath layer are sequentially wrapped outside the outer-layer wire core body. According to the cable, the 12 pairs of twisted wire cores are arranged in two layers through the isolation core frame, the cable core structure is round and neat, the bending resistance is better, the fire resistance and flame retardance are better, the safety and reliability of the cable are enhanced, and the durability is better.

The invention relates to a super-hydrophobic heat-conducting insulating coating and a preparation method thereof, and belongs to the technical field of coatings. The super-hydrophobic heat-conducting insulating coating disclosed by the invention is prepared from the following raw material components: a fluorine-containing elastomer polymer, organic acid, a solvent, a vulcanizing agent and modified graphene. According to the invention, the modified graphene is used as a filler and has the characteristics of high thermal conductivity and insulation, the surface of the modified graphene is coated with the fluorine-containing elastomer polymer to form two layers of low-surface-energy substances, and a micro-nano rough structure on the surface of the modified graphene forms a super-hydrophobic effect. And after the fluorine-containing elastomer polymer coated on the surface is worn off for a long time, the modified graphene on the inner layer still has a super-hydrophobic effect, so that the durability of the coating is improved. In addition, by introducing a hydrophobic group, the dispersity of the fluorinated graphene and the compatibility of the fluorinated graphene with a fluorine-containing elastomer polymer are improved.

The invention discloses a doped hafnium oxide-based ferroelectric film based on doping distribution regulation and control and a preparation method and application thereof, an x-y-x structural unit is selected according to the doping concentration, an ALD technology is repeatedly adopted on a substrate to obtain [(Hf0. 5Zr0. 5O2) y-Alx-(Hf0. 5Zr0. 5O2) y] z ferroelectric films with different doping concentrations, x is the number of cycles of a dopant, y is the number of cycles of the dopant, y is the number of cycles of the dopant, y is the number of cycles of the dopant, y is the number of cycles of the dopant, and z is the number of cycles of the dopant. Y is the total number of cycles of hafnium oxide and zirconium oxide, z is the number of repetitions of an x-y-x structural unit, and the doping concentration of the ferroelectric film is x / 2y; a top electrode and a bottom electrode are plated on a [(Hf < 0.5 > Zr < 0.5 > O < 2 >) < y >-Al < x >-(Hf < 0.5 > Zr < 0.5 > O < 2 >) < y >] < z > ferroelectric film, and then high-temperature annealing treatment is performed to obtain the doped hafnium oxide-based ferroelectric film based on doping distribution regulation and control. According to the invention, the distribution of doped elements is accurately regulated and controlled, so that the insulating property, ferroelectric property and durability of the material are remarkably improved, and the requirements of future high-performance electronic devices are met. The technical innovation opens up a new direction for application of ferroelectric materials and promotes further development of related fields.

The invention relates to a drop-out fuse with a sun exposure resistant coating. And a coating with low absorptivity is uniformly sprayed on the surface of the drop-out fuse. The coating of the coating comprises the following components in percentage by weight: 35% of polymer silicon resin powder, 19% of titanium dioxide, 24% of barium sulfate powder, 20% of xylene, 0.6% of flatting agent, 0.4% of defoaming agent and 1% of UV absorbent. The coating is uniformly sprayed on parts which do not influence the action and electric conduction of the fuse tube, and the sprayed area comprises an upper iron handle, an insulator, a fixed end, a lower iron handle, the fuse tube and a pull ring of the drop-out fuse. The surface of the coating has high brightness and can reflect most sunlight. The coating has good insulation characteristics and can be used in the electrical field. The coating has good weather resistance and chemical stability, and is suitable for being used in various harsh environments.

The present invention provides an N-pole module of a leakage circuit breaker, including an N-pole mechanism that forms a linkage with an L-pole mechanism, the N-pole mechanism including a support frame that is rotatably arranged on a housing through a rotating shaft I, an N-pole moving contact that is rotatably arranged on the support frame, and an elastic pressure piece that is arranged between the N-pole moving contact and the support frame, the N-pole moving contact is provided with a connecting portion, and the support frame is provided with a limiting portion that forms a limiting match with the connecting portion, and the elastic pressure piece provides the required final pressure for the N-pole moving contact. The N-pole mechanism using this technical solution only needs two rotating shafts during assembly, which simplifies the installation structure, has fewer installation parts, is convenient and quick to install, and improves installation efficiency. The entire structure is more compact, the mechanism has good stability, and the installation occupies less space, freeing up the installation space of the N-pole module, and the N-pole moving contact and the L-pole moving contact can be universal, thereby saving costs, improving the N-pole breaking capacity of the leakage circuit breaker, and being safe and reliable to use.

A circuit board according to an embodiment includes: a first metal layer; and a second metal layer disposed on the first metal layer, in which the first metal layer includes an oxide layer formed by oxidizing a region of a predetermined depth from a lower surface of the first metal layer, the first metal layer and the second metal layer include a plurality of electrode patterns disposed on the oxide layer and spaced apart from each other, the oxide layer insulates the plurality of electrode patterns from each other.

The utility model discloses a multi-nozzle precision control electrostatic spinning machine, and relates to the technical field of electrostatic spinning machines. The spinning machine comprises a spinning machine shell, a moving mechanism and a wind-up roller are installed in an inner cavity of the spinning machine shell, the moving mechanism is provided with a moving plate, an advancing mechanism is installed on the moving plate, a push plate is installed on the advancing mechanism, a support is installed on the moving plate, a plurality of spray heads are installed on the support, and the spray heads are connected with the wind-up roller. A placing plate is mounted on the moving plate, a plurality of material conveying pieces are arranged on the placing plate, and a fixing mechanism is mounted at the top of the placing plate and located above the material conveying pieces. The insulating ceramic partition plates on the support are made of aluminum oxide ceramic materials and are distributed between every two nozzles at equal intervals, the adjacent nozzles are physically isolated, direct coupling of electric field lines between the adjacent nozzles can be blocked through the high insulation characteristic of insulating ceramics, and independent fusiform electric field distribution is formed by each nozzle.

The application discloses a kind of discrete series low distributed capacitance liquid cooling heat dissipation device and method, it belongs to electronic device heat dissipation technical field, heat dissipation device includes several heat dissipation units, the top of each heat dissipation unit is used to set power device, and two adjacent heat dissipation units are connected by cooling liquid pipeline;Each heat dissipation unit includes matrix and radiator, cooling liquid pipeline is through the inside of matrix, the top center of matrix is equipped with mounting hole, and mounting hole is equipped with radiator, and the lower half of radiator is inserted into the inside flow channel of cooling liquid pipeline, and the top of radiator is used to place power device.The application adopts discrete series heat dissipation unit structure, cooling liquid pipeline is through each unit matrix, and the lower half of radiator is inserted into the inside flow channel of pipeline, and each unit independently corresponds a power device.Solve the parasitic distributed capacitance problem caused by shared metal radiator, eliminate resonance loop, inhibit switching oscillation, reduce loss, ensure that heat dissipation is uniform and dynamic equalization, improve the stability and service life of high-voltage series module.

The invention discloses an environment-friendly flame-retardant high-voltage photovoltaic cable and a preparation method thereof, belongs to the technical field of cable processing, and aims to solve the technical problem that the flame retardance, insulating property, wear resistance and mechanical strength of an environment-friendly flame-retardant high-voltage photovoltaic cable in the prior art need to be further improved. The cable specifically comprises a cable core, an insulating layer and an outer sheath layer, wherein the outer sheath layer of the cable comprises the following components in parts by weight: 48-52 parts of polyurethane, 1-3 parts of adipic dihydrazide, 20-25 parts of a flame retardant, 12-15 parts of a reinforced compound and 4-6 parts of an auxiliary additive. Through the synergistic effect of the polyurethane, the flame retardant and the reinforcing compound, the flame retardant property, the insulating property, the wear resistance and the mechanical strength of the cable are improved.

The application discloses a composite negative electrode sheet, a preparation method thereof and a lithium battery. The composite negative electrode sheet comprises a current collector and an active material layer, a first insulating and heat-conducting coating layer and a second insulating and heat-insulating coating layer which are sequentially stacked on the current collector, wherein the first insulating and heat-conducting coating layer comprises an insulating and heat-conducting material, the second insulating and heat-insulating coating layer comprises an insulating and heat-insulating material, the particle size D50 of the insulating and heat-conducting material is D v1 , and the particle size D50 of the insulating and heat-insulating material is D v2 . D v1 <D v2 The composite negative electrode sheet can effectively improve the safety performance of the lithium battery.

The utility model discloses a honeycomb reinforced furnace cover, belongs to the field of industrial kilns, and is particularly suitable for the technical field of magnesium reduction furnaces. The cover plate is formed by splicing a plurality of cover plate single bodies (1), each cover plate single body (1) comprises a working lining (6), groove areas are formed in the surface of each working lining (6) at intervals through rib plates (2), the groove areas comprise first groove areas (3) or / and second groove areas (7), the first groove areas (3) are of independent closed structures defined by the rib plates (2), and the second groove areas (7) are located at the edges of the cover plate single bodies (1). The second groove areas (7) at the edges of every two adjacent cover plate single bodies (1) are spliced to form a closed structure. According to the honeycomb reinforced furnace cover, the surface is of a honeycomb structure through the groove areas and the concave parts formed by the rib plates at intervals, so that the effect of reducing the weight of the furnace cover is achieved, the structural stability and integrity of the furnace cover are improved through the honeycomb structure, particularly the breaking strength of the furnace cover is improved, and the safety of the furnace cover is greatly improved.

This invention discloses an environmentally friendly water-based fire-fighting composite material for thermal runaway protection and its preparation method. The invention uses superabsorbent resin, epoxy resin, and a special fire-fighting liquid as main raw materials, which are mixed and then vibrated to form the composite material. The superabsorbent resin absorbs water to form a gel network, uniformly coating and fixing the special fire-fighting liquid to form a stable honeycomb composite structure. The epoxy resin provides mechanical support and a thermally conductive framework, jointly achieving integrated fire-fighting, heat dissipation, shock absorption, and thermal insulation functions. The material of this invention features flame retardancy, high-efficiency heat dissipation, shock absorption, and strong low-temperature adaptability. It can be filled between battery modules and PACK shells to quickly suppress fire and absorb impact during thermal runaway, while maintaining structural integrity and functional stability over a long period. The material preparation process is simple, environmentally friendly, and non-toxic, making it suitable for the safety protection of new energy battery systems.

The application provides a rolling brush motor and a ground brush assembly. The rolling brush motor comprises a stator, a rotor shell and a fixed shaft led out from the stator and the rotor shell; the stator is fixed on the fixed shaft; the rotor shell is rotatably sleeved on the stator and is configured to drive the rolling brush of the cleaning device to rotate; a wire channel is arranged in the first end of the fixed shaft to lead the lead wire of the stator out of the rotor shell; and the material of the fixed shaft is engineering plastic. The fixed shaft is made of engineering plastic to form the wire channel in the fixed shaft, realize internal wiring, enhance waterproof reliability, reduce the entry of water vapor into the rotor shell from the assembly position of the bearing and the fixed shaft, stably assemble the uniform outer surface of the fixed shaft and the inner ring of the bearing to reduce shaking, and avoid the need for more installation fixing structures and space for additional wiring.

The invention belongs to the technical field of electronic engineering, and particularly relates to a multifunctional MCU automatic detection system, the detection system is used for MCU multi-item detection, the multifunctional MCU automatic detection system comprises an MCU system test platform, a functional environment adjusting module and a computer analysis module, the MCU system test platform is composed of a logic analyzer, an oscilloscope, a placement table and an adapter, and the logic analyzer is connected with the oscilloscope. The oscilloscope is electrically connected with the tested MCU through the adapter, stable connection between the MCU and the MCU system test platform is ensured, the functional environment adjusting module is composed of a temperature regulator, a humidity regulator, a vibration generator and a radiation generator, and more accurate and reliable environment simulation is achieved. The computer analysis module is composed of a test parameter program and a test environment function verification program, control steps are simplified, the automation effect of equipment is improved, the test environment function verification program is used for function detection of the tested MCU in different test environments, and high quality and reliability of products are guaranteed.

The invention discloses a two-dimensional semiconductor transistor with a gate dielectric cooperatively inducing channel p-type conduction, and belongs to the technical field of semiconductor devices. The device mainly solves the technical problem that stable and high-performance p-type conduction of a two-dimensional n-type semiconductor material (such as InSe) is difficult to realize. According to the technical scheme, the method is characterized in that a two-dimensional antiferromagnetic insulating material CrOCl is adopted as a gate medium and a p-type induction layer at the same time, effective hole doping of a channel material is achieved through van der Waals interface charge transfer between the CrOCl and a two-dimensional n-type semiconductor channel layer (such as InSe), and a stable p-type conductive channel is formed through induction. The device structure comprises a substrate, a gate electrode, a CrOCl layer, a semiconductor channel layer and a source / drain electrode from bottom to top. A traditional doping technology is not needed, simple construction of the p-type transistor is achieved through material and structure innovation, and a core device scheme is provided for a complementary metal oxide semiconductor (CMOS) logic circuit based on a two-dimensional semiconductor.

The present invention relates to a photosensitive resin composition comprising: a polysiloxane resin; a binder resin including a (meth) acrylic copolymer resin; an acrylic polyfunctional monomer having different acrylics having two or more functions; a photoinitiator which is at least one type selected from the group consisting of an O-acyl oxime-based photoinitiator, an acetophenone-based photoinitiator, and a benzophenone-based photoinitiator; the additive comprises at least one of a silane coupling agent, a leveling agent, an epoxy curing agent and a curing accelerator; and a solvent. The photosensitive resin composition has the characteristics of improved insulativity and heat resistance and very low moisture absorption rate because of containing polysiloxane, and is particularly used as a PDL (Pixel Defined Layer) layer which divides and insulates the boundaries between pixels of an OLED display device and a planarization layer which is formed flat on the lower part of the PDL layer and has insulation characteristics.

The present invention discloses a BOPP / single-layer two-dimensional polymer composite film with high dielectric properties and a preparation method thereof, belonging to the technical field of capacitor metallization dielectric films. (1) Surface treatment of BOPP film; (2) TAPB and TPOC with different lengths of alkoxy chains; x Dissolve them in organic solvents respectively; (3) Prepare TAPB and TPOC x The solutions are mixed, and the mixed solution is dripped and spread on the surface of ultrapure water in the LB film drawing machine tank, and the mixture is left to stand until the solution evaporates; (4) the LB film drawing machine slide barrier speed is set to compress; (5) glacial acetic acid is dripped to make it spread on the surface of ultrapure water in the LB film drawing machine tank, and the mixture is left to react; (6) the LB film drawing machine slide barrier speed is set to compress to form a single-layer two-dimensional polymer film; (7) the single-layer two-dimensional polymer film is transferred to the surface of the BOPP film for deposition to form a composite film. The present invention prepares a composite film by depositing a single-molecular layer of two-dimensional polymer on the BOPP film, inhibits the charge migration at the electrode-medium interface, and improves the insulation properties of the film.

The application provides an insulating waterproof sealing structure layer and a preparation method and a heating module. The insulating waterproof sealing structure layer comprises the following raw materials in mass fractions: polyurethane 100-500 parts, quartz sand 400-1000 parts, calcium salt 50-300 parts, pigment 1-10 parts, polyurethane diluent 10-100 parts, sodium dodecyl sulfate 1-10 parts, and mineral oil 1-10 parts. The insulating waterproof sealing structure layer has good curing performance, insulating properties and waterproof properties, can provide good protection for various electric heating equipment and facilities, and does not affect the normal operation of the electric heating equipment.

The utility model discloses a motor insulation bearing assembly which comprises a disc-shaped base, an outer ring fixed in the disc-shaped base, an inner ceramic ring installed at the central axis position in the outer ring and a retainer fixed at one end of the surface of the inner ceramic ring, and a plurality of balls in rolling contact with the inner wall of the outer ring are embedded in the retainer. And a polyimide insulating sleeve is coaxially sleeved in the inner ceramic ring. The outer ring, the balls, the retainer, the inner ceramic ring and the polyimide insulation sleeve are sequentially mounted in the disc-shaped base connected with the motor shell, the current insulation purpose is achieved, meanwhile, the inner ceramic ring and the polyimide insulation sleeve are sleeved with each other, the upper ends and the lower ends of the inner ceramic ring and the polyimide insulation sleeve are in bolted connection, and the purposes of quick disassembly and quick assembly are achieved.

The utility model discloses an unmanned aerial vehicle airborne power supply with an air cooling heat dissipation function, which comprises a shell, an inner box used for separating two spaces is arranged in the shell, a fan mechanism is arranged between the inner box and the top of the shell, and a plurality of heat dissipation fins used for heat conduction are arranged at the top of the inner box. According to the unmanned aerial vehicle airborne power supply with the air cooling heat dissipation function, heat generated by electronic elements is transmitted to the heat dissipation fins through the heat conduction strips, then external air is sucked into the position between the top of the shell and the inner box through the fan mechanism, then the air flows towards the two sides, and after the heat on the air is adsorbed when the air passes through the heat dissipation fins, the air is discharged through the first heat dissipation meshes; therefore, a first heat dissipation effect is achieved.

The invention relates to the field of electric locomotive lightning arresters, in particular to a locomotive linear combination gap lightning arrester and a detection method thereof.The locomotive linear combination gap lightning arrester comprises a shell, and the shell comprises an upper fitting, a lower flange and an insulating shell connected between the upper fitting and the lower flange; a non-linear resistor, a linear resistor and a plurality of gap copper tables are arranged in the insulating shell, the linear resistor is connected between the gap copper tables in an abutting and series mode so as to separate the adjacent gap copper tables to form a breakdown gap, and the non-linear resistor is connected with the gap copper tables in series. The invention has the effects of ensuring the overall thermal stability, reducing the residual voltage level and improving the protection level.

This invention discloses a high-insulation binaphthalene polyimide dielectric film, its preparation method, and its applications, belonging to the field of high-performance insulating materials technology. Through molecular structure regulation, this invention introduces a large-volume, non-coplanar binaphthalene structure into the polyimide molecular chain. On one hand, the non-planar helical configuration between the two naphthalene rings suppresses the intra-chain conjugation effect, weakening the carrier transition capability along the main chain. On the other hand, the large-volume binaphthalene structural unit effectively disrupts the regular arrangement of the molecular chain, increasing the internal free volume and inter-chain spacing, thus increasing the length and tortuosity of the carrier migration path, increasing the energy barrier height that carriers must overcome during migration, and weakening the inter-chain carrier mobility. The synergistic effect of the above-mentioned intra-chain and inter-chain carrier migration suppression significantly improves the breakdown strength of polyimide and greatly extends its corona resistance lifetime.

The utility model discloses a high-safety soft package battery cell with a liquid packaging structure, which comprises a shell with two open ends and a shock pad, and a gap is arranged between a battery cell body in the shell and the shell. The gap is divided into a first insulation area, a liquid packaging area and a second insulation area from left to right through a shock pad fixed on the battery cell body in a surrounding manner, the liquid packaging area is filled with insulation liquid, the first insulation area and the second insulation area are both filled with pouring sealant, and sealing edges between the positive and negative electrode lugs and the battery cell body are located in the insulation areas; furthermore, an end cover used for reinforcing sealed packaging is arranged at the opening of the shell, and the end cover on the same side as the tab end is integrally formed by injection molding, so that the tab and the end cover as well as the end cover and the shell can be stably fixed, the structural strength of the soft package battery cell is enhanced, and the sealing performance of liquid packaging is enhanced through a glue injection process. The soft package battery core has good sealing, pressure-bearing and insulating characteristics, the safety of the soft package battery core is improved, and the failure risk can be effectively reduced.

The invention discloses a preparation process of a light-weight environment-friendly coal gangue hollow brick, relates to the technical field of hollow brick preparation, and aims to solve the problem that the existing hollow brick is relatively high in production cost due to poor heat preservation effect of the hollow brick during use. The coal gangue hollow brick is prepared from coal gangue, sand, cement, mineral wool fibers, metallurgical waste residues, a thickening agent and other raw materials, the metallurgical waste residues are used for preparation in the process, aluminum oxide, silicon dioxide, ferric oxide, calcium oxide and the like contained in the coal gangue and the metallurgical waste residues react, such as aluminosilicate, so that aluminosilicate minerals are generated, and then the coal gangue hollow brick is prepared. The mineral has higher strength and stability, so that the strength of the hollow brick is improved, the mineral wool fiber is added in the process, the heat insulation and sound insulation characteristics of the mineral wool fiber are utilized, noise can be reduced, the indoor comfortable temperature can be kept, the mineral wool fiber in the process is extracted from mineral wool waste, resource reutilization is achieved, and the production cost is reduced. And resource waste is reduced, and the device is more environment-friendly.

The application focuses on electronic equipment and other insulating circulating liquid cooling systems, and provides a preparation technology of nano heat-conducting silicone oil. The technology mainly covers three key steps: S1, pretreatment of AlN nano powder; S2, pretreatment of silicone oil; S3, preparation of nano heat-conducting silicone oil. The heat-conducting performance of aluminum nitride is excellent, and its heat conductivity is 1200-1400 times that of traditional dimethyl heat-conducting silicone oil. By compounding the two, high-heat-conducting nano fluid is successfully prepared, so that the heat dissipation efficiency is greatly improved by 31-36%. In addition, hydroxyethyl cellulose is selected as a dispersing agent in the application, which effectively guarantees the stability of particle suspension under high temperature working conditions, and ensures that the insulation characteristics of the fluid are not affected.

Disclosed are compositions comprising a polysiloxane resin; a binder resin including a (meth) acrylic copolymer resin; a photosensitizer composed of a 1, 2-quinonediazide compound; comprising at least one of a sensitizer, a silane coupling agent and a leveling agent; and a solvent. Since the photosensitive resin composition contains polysiloxane, the photosensitive resin composition can be used as a PDL (Pixel Defined Laye r) layer which divides and insulates the boundaries between pixels of an OLED display device and a planarization layer which is formed flat on the lower part of the PDL layer and has insulation characteristics by using the characteristics of improved insulation and heat resistance and very low moisture absorption rate.

Provided is a carbon black having high insulating properties. The carbon black satisfies the following conditions (a) and (b): (a) the nitrogen adsorption specific surface area (NSA) is greater than 0 m2 / g and 130 m2 / g or less; and (b) an oil absorption value of more than 0 cc / 100 g and 95 cc / 100 g or less.

This invention discloses a polynorbornene imide insulating material, its preparation method, and its applications, belonging to the technical field of electrical insulation materials and their preparation. This invention solves the problem of poor insulation performance in existing polynorbornene imide dielectric films. This invention obtains FPNI by fluorinating polynorbornene imide (PNI), a polymer dielectric film with a wide bandgap and a high glass transition temperature organic rigid backbone. Furthermore, by doping FPNI with the wide bandgap organic molecule 4,4-dihydroxydicyclohexane (OH), not only is hydrogen bonding crosslinking between hydroxyl and fluorine atoms achieved, but the wide bandgap OH also brings higher electronic transition energy levels, resulting in a crosslinked polymer film with excellent insulation performance and a breakdown field strength of 619.53 MV / m.