256results about How to "Improve insulation performance" patented technology

This invention relates to the field of thermal insulation materials, specifically to an inorganic silicon crystal fire-resistant thermal insulation material for fireproof air ducts and its preparation method. The material comprises inorganic silicon crystal powder, hollow microspheres, composite binders, reinforcing fibers, surface modifiers, nano-antibacterial agents, crack-resistant agents, flame-retardant synergists, and intumescent flame-retardant microcapsules. The inorganic silicon crystal powder is activated by calcination, the microspheres are pretreated with coupling agents and coated with silica sol, the binder is a compound type, the fibers are grafted, the antibacterial agent is loaded onto a carrier, and the flame-retardant microcapsules have a specific core and shell. All components work synergistically to ensure performance. This invention improves the material's fire resistance, thermal insulation, and mechanical properties, integrates antibacterial and flame-retardant functions, optimizes the process to ensure stable performance, reduces fire risk, and meets the high-performance and high-stability requirements of high-end building fireproof air ducts.

The utility model provides a stainless steel olefin alloy ground wire lightning protection structure. The stainless steel olefin alloy ground wire lightning protection structure includes: alloy ground wire, two fixed rings, two fixed rings are installed in the both ends of alloy ground wire respectively, two fixed rings are opposite one end all fixedly connected with olefin alloy head, two olefin alloy heads another end all are equipped with the connecting assembly, two fixed rings adjacent one end all are fixedly connected with the butt joint ring, first insulating layer, first insulating layer is located in the inner surface of alloy ground wire, the alloy ground wire is from inside to outside in proper order for first stainless steel layer, multiple olefin alloy wire, filling layer, second stainless steel layer, flame -retardant layer, buffer layer and second insulating layer. The utility model provides a stainless steel olefin alloy ground wire lightning protection structure, through this design has increased the lightning protection performance of stainless steel olefin alloy ground wire, has reduced the probability that the stainless steel olefin alloy ground wire is hit by lightning and is damaged.

The utility model relates to fire engineering technical field especially fire engineering is with preventing deformation's heat -proof fire door, including door frame, still including door shell and door lock component, door frame one side fixedly connected with door shaft, door frame one side fixedly connected with door shaft, the material that this device adopts through door shell is steel sheet to improve the strength of door, prevent deformation, the material that fills the layer adopts is magnesium oxide to improve the heat -proof of door, through being provided with first fire -retardant expansion seal and second fire -retardant expansion seal on door frame and door shell, thereby the door gap is sealed, improves the leakproofness, can effectively block the flue gas, through first spring drive movable block in the inside slide of guide block, movable block drive toothed plate removal, toothed plate drive gear rotation, gear drive first rotation axis rotation, first rotation axis drive second connecting rod rotation, second connecting rod drive first connecting rod in the inside rotation of fixed block, thereby the door shell is automatically closed, prevents the fire, flue gas spreads.

The invention discloses a composite modification film, a lithium metal negative electrode and a preparation method of the lithium metal negative electrode. The composite modified film comprises an organic polymer solid electrolyte, an inorganic solid electrolyte and a film-forming agent, and the mass ratio of the organic polymer solid electrolyte to the inorganic solid electrolyte to the film-forming agent is (10%-35%): (10%-35%): (30%-80%). The composite modified film effectively buffers cyclic stress, prevents early mechanical failure of the protective layer, and realizes mechanical durability of the interface protective layer; the immobilized film-forming agent can be slowly released, so that the continuous and stable repair of SEI is realized, the dynamic repair capability of the whole life cycle is provided, and the efficient cycle life of the battery is greatly prolonged; and the electrolyte does not need to depend on a high-concentration liquid additive, dramatic change of electrolyte components in circulation is avoided, the overall chemical stability of the battery is improved, and the stability of an electrolyte system is guaranteed.

This invention discloses a method for preparing a novel ultra-high voltage high-performance composite insulating material, belonging to the field of composite insulating material preparation technology. The technical solution includes the following steps: S1, preparing a modified epoxy-silicone rubber composite resin matrix: 40-50 parts by weight of bisphenol A type epoxy resin (E-51) are placed in a reaction vessel, heated to 60-70℃, and continuously stirred at a stirring rate of 300-500 r / min. 10-15 parts by weight of terminal hydroxyl polysiloxane (molecular weight 5000-10000) are added, and the temperature is kept constant for 1.5-2 hours; subsequently, the system temperature is lowered to 40-50℃. The beneficial effects of this invention are: by setting up a resin matrix system of "terminated hydroxyl polysiloxane modified epoxy resin + nano-alumina / boron nitride composite reinforcement," the problem of imbalance between high voltage resistance and aging resistance in existing materials is solved. It exhibits significantly improved dielectric strength, greatly reduced dielectric loss, and excellent high and low temperature cycling performance, meeting the long-life operation requirements of ultra-high voltage equipment.

This utility model belongs to the field of battery technology and discloses a battery heating film and a battery. The battery heating film is connected to a battery cell. The heating film includes a heating film body, a conductive element, and an insulating film. The conductive element is electrically connected to the heating film body for conductive connection to an external power source. The insulating film covers the surface of the heating film body in the thickness direction. The heating film body has connection holes, and the insulating film has connection portions corresponding to the connection holes. The connection portions on both sides of the heating film body in the thickness direction are fixedly connected to limit the relative position of the insulating film and the heating film body. Thus, through the conductive element's conductive connection to an external power source, the heating film body is energized and heated, enabling uniform heating of the battery cell surface, saving on the need for a heat spreader, and simplifying the structure of the battery heating film.

The invention discloses a high-dielectric low-loss dielectric material for a high-voltage ceramic capacitor, and relates to the technical field of dielectric materials, which comprises the following steps: S1, preparing bismuth stannate; step S2, preparation of bismuth titanate; step S3, preparation of barium zirconate; step S4, compression molding and sintering; and S5, printing an electrode. The high-dielectric low-loss dielectric material for the high-voltage ceramic capacitor is high in dielectric constant and low in dielectric loss, and meets N4700 temperature characteristics and environmental protection requirements.

The utility model relates to long water gap related technical field especially relates to a glaze anti -crack type long water gap, the inside of long water gap ladle end, long water gap middle transition section and long water gap tundish end all is equipped with buffer composite component, the inner wall of long water gap ladle end, long water gap middle transition section and long water gap tundish end is provided with anchor assembly. The utility model discloses through the setting of buffer composite component, through the gradient change's honeycomb hole and hole, the nanometer heat conduction coating of dynamic adjustment heat conduction efficiency, realizes thermal stress dispersion and temperature regulation, and buffer composite component cooperates anchor assembly and anchors gradually complementary, and the destruction of heat stress to glaze layer is reduced to heat dissipation and buffer structure, and the anchor structure guarantees that glaze layer does not fall off under certain thermal stress and external force effect, and the anti -crack of long water gap glaze is realized together, and the overall performance and service life of long water gap are improved.

The utility model relates to aerosol generating device and heating assembly, heating assembly includes: for at least part aerosol generating substrate heating's heating cavity, by inside to outside setting gradually in the heating cavity outer periphery's first heat insulation structure and second heat insulation structure, the high temperature resistance of first heat insulation structure is stronger than the high temperature resistance of second heat insulation structure, and / or, the heat insulation of first heat insulation structure is weaker than the heat insulation of second heat insulation structure. Heating assembly passes through inside to outside setting gradually first heat insulation structure and second heat insulation structure in the outer periphery of heating cavity, and the high temperature resistance of first heat insulation structure is stronger than the high temperature resistance of second heat insulation structure and / or the heat insulation of first heat insulation structure is weaker than the heat insulation of second heat insulation structure, and then can reduce the heat conduction of heating body to the outside, improve the heat insulation of heating assembly, improve user's use experience.

The laser chip and its fabrication method disclosed herein include a first reflective layer, an active region, an oxide layer, and a second reflective layer sequentially disposed on a substrate. The laser chip has a first trench and a second trench for oxidizing and etching the oxide layer. A first connecting portion connects one end of the first trench to one end of the second trench, and a second connecting portion connects the other end of the first trench to the other end of the second trench. Due to the influence of crystal anisotropy on the oxidation rate, and the mutual coordination of the first and second connecting portions on the oxidation rate, the oxide aperture includes a first oxide arc, a second oxide arc, a third oxide arc, and a fourth oxide arc. The first and second oxide arcs are arranged opposite each other, as are the third and fourth oxide arcs. The third and fourth oxide arcs have different radii of curvature, forming a specific irregular morphology. The oxide aperture based on the irregular morphology can effectively suppress transverse multimode lasing of the optical signal and reduce mode degeneracy.

The application provides an epoxy resin with a super-hydrophobic layer and a preparation method thereof, and relates to the technical field of polymer insulating materials.The preparation method of the epoxy resin with a super-hydrophobic layer comprises the following steps: surface activation of a substrate: treating the surface of the cured epoxy resin substrate with plasma or alkali to introduce hydroxyl groups; constructing a silane anchoring layer; constructing a conductive inhibition layer; constructing a micro-nano rough structure layer: forming a micro-nano rough structure on the surface of the conductive inhibition layer by spraying or dipping nanoparticles; low surface energy modification; the super-hydrophobic performance of the epoxy resin is excellent: through the cooperation of the micro-nano rough structure and the fluorosilane low surface energy modification layer, the water contact angle is greater than or equal to 150 degrees, the rolling angle is less than 10 degrees, the formation of a water film on the surface can be significantly inhibited, and the adhesion and spreading of water in a humid environment are reduced; the wet-state insulation performance is greatly improved: the conductive inhibition layer introduces a large number of charge traps and prolongs the charge migration path.

The application belongs to the technical field of soft magnetic material preparation, and particularly relates to a ferrosilicon magnetic material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing ferrosilicon magnetic powder and a passivation agent, and then performing primary heat treatment and cooling to room temperature at a speed of not higher than 30 DEG C / h; (2) mixing the magnetic powder obtained in the step (1) with the passivation agent to obtain passivated magnetic powder; (3) adding a first coating agent to the passivated magnetic powder to perform primary coating, and then performing secondary heat treatment; and (4) adding a second coating agent to the magnetic powder obtained in the step (3) to perform secondary coating, pressing, and then performing tertiary heat treatment. The average particle size of the first coating agent is 300 nm-1 mu m; and the second coating agent comprises colloidal particles, and the average particle size of the colloidal particles is not higher than 100 nm. The preparation method can improve the density and effective magnetic permeability of the ferrosilicon magnetic material, so that the ferrosilicon magnetic material has excellent magnetic performance, the loss is greatly reduced, heat generation is reduced, and the device is beneficial to energy saving and high efficiency.

The application discloses a transverse stepped gap groove clamp for a classical four-point bending experiment, which comprises an upper clamp, a lower clamp and a positioning connecting piece, standard installation through holes are arranged on the upper clamp, the lower clamp and an experimental sample, the positioning connecting piece passes through the standard installation through holes to realize the connection of the upper clamp, the experimental sample and the lower clamp, stepped gap groove arrays are arranged on working surfaces of the upper clamp and the lower clamp in contact with the experimental sample, the stepped gap groove array comprises a plurality of grooves arranged along the length direction of the upper clamp and the lower clamp, the depth of the groove is arranged along the height direction of the upper clamp and the lower clamp, the depth of the groove is increased or decreased along the length direction of the experimental sample according to a preset gradient, and the height of the groove is arranged along the thickness direction of the upper clamp and the lower clamp. The application can meet the requirement that the four-point bending experiment cannot realize high-throughput gap simulation in a stress corrosion environment, and is used for improving the accuracy, reliability and efficiency of the experiment.

The utility model discloses an insulating wrench for electrical construction, and particularly relates to the technical field of insulating wrenches, which comprises a wrench body, an extension plate arranged at the bottom of the wrench body, an adjusting mechanism arranged at the bottom of the wrench body and used for adjusting the extension plate, a support plate arranged at the top end of the extension plate, a plug-in groove arranged at the bottom end of the wrench body, a plug-in rod arranged in the wrench body, the front end of the plug-in rod penetrating through the wrench body and extending out of the front side of the wrench body, a plurality of plug-in holes arranged on the support plate, and a protection mechanism arranged on the outside of the extension plate and used for electric power insulation protection. The adjusting mechanism can adjust the distance between the wrench body and the extension plate, so as to facilitate the disassembly of bolts at different positions and improve the practicability of the utility model. In addition, the wrench body can be limited by the limiting mechanism, so as to prevent the wrench body from falling during aerial work and improve the safety.

An aspect of the present disclosure provides a flow channel cap plate that constitutes a combustion chamber assembly including a combustion chamber and a plurality of insulating pipelines disposed on left / right side surfaces of the combustion chamber, the flow channel cap plate forming an insulating flow channel by covering the front surface of the combustion chamber, the flow channel cap plate including an inlet part including an inlet, and an inlet flow channel cap covering the front surface of the combustion chamber, an inlet space part is formed by covering the front surface of the combustion chamber with the inlet flow channel cap, the inlet is an entrance of the insulating flow channel, the plurality of insulating pipelines include a plurality of inlet insulating pipelines, and the inlet space part is a space that communicates the inlet with the plurality of inlet insulating pipelines.

The utility model relates to electronic components technical field especially relates to a choke coil inductor, the utility model discloses the protrusion that extends along the radial is arranged at two corners of base body, the threading hole along the axial is seted up on the protrusion, and the both ends of coil extend to two protrusions along the radial respectively, and the one end of two electronic wires respectively passes threading hole and is electrically connected with the both ends of coil, and such design can increase the distance between the two lead ends of coil, and the insulation performance and reliability of inductor are improved significantly, and the corona discharge problem under high pressure environment is avoided.

The utility model relates to the field of car cover, especially a high heat insulation ultraviolet resistant car cover. The utility model wants to solve the technical problem to provide a kind of high heat insulation ultraviolet resistant car cover that can synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life. A kind of high heat insulation ultraviolet resistant car cover, including the substrate layer, function layer and protective layer that are sequentially laminated settings;The function layer is alternatively stacked by multiple heat insulation layers and multiple ultraviolet resistant layers;The heat insulation layer is metal sputtering layer or metal oxide nanoparticle layer, for reflecting or absorbing infrared rays;The ultraviolet resistant layer is ultraviolet absorber coating, for absorbing ultraviolet rays. The utility model reaches the effect that synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life.

The application belongs to the technical field of adhesives and sealants, and specifically provides a sealing wax as well as a preparation method and application thereof. The sealing wax comprises the following components in parts by mass: microcrystalline wax 40-60 parts, polyethylene wax 1-5 parts, ethylene-vinyl acetate copolymer 3-8 parts, low-molecular-weight polyisobutylene 2-5 parts, medium-molecular-weight polyisobutylene 2-5 parts, tackifying resin 15-20 parts, and flame retardant 3-5 parts. The number-average molecular weight of the low-molecular-weight polyisobutylene is less than 5000, and the viscosity-average molecular weight of the medium-molecular-weight polyisobutylene is 10000-40000. Through the design and mutual compounding of the components, the sealing wax has a high melting point, a low water absorption rate, a high volume resistivity, good high-temperature and low-temperature resistance, and strong waterproof and moisture-proof performance, high mechanical strength and toughness, high insulation, high transparency, and strong sealing effect, and has good flow leveling property and good flame retardant performance, and can meet the strict use requirements of high-end electronic equipment.

A low-density, high-stability fluorinated polyimide aerogel is prepared by using TFMB, ODA, and 6FDA as raw materials to prepare a polyamic acid solution. Triethylamine is added to the polyamic acid solution to prepare a fluorinated polyamic acid salt. The fluorinated polyamic acid salt is dissolved in a mixture of water and diphenyl ether, and then triethylamine and N,N-dimethylcyclohexylamine are added to prepare a polyamic acid hydrogel. The hydrogel is then freeze-dried to obtain the polyamic acid aerogel, which is finally subjected to thermal imidization treatment. This invention uses three monomers to form an aerogel, creating a low-density, high-porosity three-dimensional network structure. This structure is stable, has a high heat resistance temperature, and maintains good performance at high temperatures. The aerogel also possesses a certain degree of rigidity and strength, making it resistant to deformation and structural collapse under external forces.

This utility model relates to the technical field of thermal insulation structures, and discloses a rooftop thermal insulation reinforcement structure, including a thermal insulation layer laid on the rooftop. The thermal insulation layer has an extruded polystyrene (XPS) board inside, and a wire mesh layer is laid on the XPS board. The XPS board and the wire mesh layer are wrapped inside the thermal insulation layer. The wire mesh layer has multiple mesh openings, and there are intersections between adjacent mesh openings. An insert strip is provided at the intersection, and the insert strip passes through the XPS board. By setting the XPS board and the wire mesh layer inside the thermal insulation layer, and setting the insert strip at the intersection of the wire mesh layer, the connection strength of the internal materials of the thermal insulation layer is improved.

The application discloses a synchronous motor stator structure and a manufacturing method thereof. The synchronous motor stator structure comprises a plurality of stator cores, a plurality of winding assemblies and a glue pouring layer. Each stator core is a circular ring segment. An outer diameter surface of each stator core is at least partially formed with a support portion. The support portion is located at a middle portion of the stator core along the circumferential direction of the stator core. Adjacent two stator cores are inserted into each other along the circumferential direction. The plurality of winding assemblies are sleeved on the stator cores. Two winding assemblies are arranged between any adjacent two support portions. The two winding assemblies are respectively abutted to the two support portions at one end of the winding assemblies which is away from each other. A gap is formed between the two winding assemblies at one end of the winding assemblies which is close to each other. The plurality of winding assemblies and the plurality of stator cores are matched to form a ring structure. The glue pouring layer is annular and covers the ring structure. The glue pouring layer does not fill the gap. Through the above arrangement, the occurrence of air corona caused by excessive local electric field strength can be avoided, and the service life of the synchronous motor stator structure is improved.

This utility model discloses a socket-type busbar trunking, including an insulating shell, a conductive busbar, and an outer insulator. The insulating shell has conductive busbar slots extending in a left-right direction, and the conductive busbar is inserted into the conductive busbar slots, with its left and right ends extending outward from the insulating shell. The front of the insulating shell has a front socket for inserting external electrical components, with the front part of the conductive busbar protruding into the front socket. The rear of the insulating shell has a rear socket for inserting external electrical components, with the rear part of the conductive busbar protruding into the rear socket. The outer insulator covers the upper, lower, left, and right ends of the insulating shell. The left end of the outer insulator also covers and closes the left end of the conductive busbar, and the right end of the outer insulator also covers the right end of the conductive busbar, with the right end of the conductive busbar extending outward from the right end of the outer insulator. The right end of the conductive busbar is used to connect external electrical components. This utility model can accommodate multiple external electrical components and offers high safety.

This invention discloses a fiber Bragg grating level sensor based on liquid pressure conversion, comprising a fiber Bragg grating demodulator, a 2×1 fiber coupler, a transmission fiber, and a sensing unit. The sensing unit consists of a strain-sensing fiber Bragg grating, a temperature-compensated fiber Bragg grating, a sealed cylinder, a support beam, a pressure block, a pressure tension frame, a sealing membrane, and a stop. The pressure block and the pressure tension frame convert liquid level changes into longitudinal displacement changes, causing axial strain in the strain-sensing fiber Bragg grating. This results in a drift in the center wavelength of the strain-sensing fiber Bragg grating, and the liquid level height of the container is measured by monitoring this wavelength change. This invention eliminates the influence of temperature on the liquid level measurement results through a temperature-compensated fiber Bragg grating, offering advantages such as a large measurement range, good practicality, simple structure, low cost, good stability, high sensitivity, and safety and reliability, meeting the needs of measuring liquid levels in large storage tanks and other applications.

This invention relates to charging pile cables and charging gun connection assemblies, belonging to the technical field of new energy vehicle charging equipment. Addressing the problem of loosening and detachment in existing charging gun and cable connections, it provides a solution. The solution includes a cable body comprising a cable core, which includes a power cable, a signal transmission cable, and a control cable. An insulation layer, an armor layer, and a sheath layer are sequentially wrapped around the cable core. A fiberglass layer fills the gap between the insulation layer and the cable core. The connection assembly uses a threaded ring, an mounting ring, and the charging gun body to form a three-section threaded connection structure, locked by a ring fitted onto the charging gun body. Annularly arranged inserts on the sidewall of the ring engage with corresponding slots on the threaded ring. Combined with a spring-driven automatic reset mechanism and an L-shaped groove guide structure, this ensures that the threaded ring cannot rotate or loosen after connection. This solution effectively solves the problem of easy failure in traditional locking block connections through dual improvements in the locking structure and cable protection layer.

The utility model discloses a heating tube sealing structure and baking tray, aim at solving the existing heating tube seal not thoroughly, the assembly stability is poor and so on. The structure contains heating disc, its inside is equipped with magnesium oxide filler, and the first, second heating tube cold needle is projected with respectively two ends, and there is the heating wire that penetrates heating disc and is wrapped by magnesium oxide filler between two cold needles. In addition, still be equipped with first conducting rod subassembly and second conducting rod subassembly, two respectively with the both ends sealed connection of heating disc. This design through both ends conducting rod subassembly and the close seal of heating disc, can bear the gas expansion pressure in pipe, prevent gas leakage, maintain the pressure balance in pipe, enhance the sealing reliability, effectively solve the sealing problem caused by gas expansion. Meanwhile, the structure reduces the dependence on the size precision of single component, even if the size error exists in component processing, can realize good sealing connection, reduces the unstable situation of assembly caused by size deviation, improves the stability and success rate of assembly.

The application provides a current sensor, and belongs to the technical field of sensors.The current sensor comprises a shell and a chip assembly, the chip assembly comprises a Hall chip and a mounting piece which is detachably connected with the Hall chip, at least one mounting cavity for mounting a magnetic core assembly is arranged in the shell, a magnetic core assembly is arranged in each mounting cavity, a mounting hole is formed in the shell, the number and position of the mounting hole correspond to those of the mounting cavity, the Hall chip is inserted into a corresponding magnetic core air gap through the mounting hole, the pin of the Hall chip penetrates out of the shell, and the mounting piece is detachably connected with the shell.The Hall chip is detachably connected with the shell, so that when the Hall chip needs to be repaired or replaced due to failure, the Hall chip can be easily removed from the shell, and subsequent repair and replacement are facilitated; and the detachable connection between the chip and the shell eliminates the need for pouring encapsulation glue to fix the chip during assembly of the current sensor.

This application relates to the field of coating technology, specifically disclosing a heat-insulating, flame-retardant, and anti-corrosion coating and its preparation method. A heat-insulating, flame-retardant, and anti-corrosion coating comprises the following raw materials in parts by weight: 50-80 parts of silicone-acrylic emulsion, 10-15 parts of epoxy resin, 30-40 parts of heat-insulating microcapsules, 15-21 parts of hollow glass microspheres, 3-5 parts of dispersant, 0.5-2 parts of polypropylene glycol diglycidyl ether, 1-5 parts of leveling agent, and 15-20 parts of water. The heat-insulating microcapsules comprise an aluminum powder core and a heat-insulating and flame-retardant capsule wall layer, the capsule wall layer material comprising acrylic resin and polyamide resin. The preparation method is as follows: hollow glass microspheres and heat-insulating microcapsules are added to silicone-acrylic emulsion and water and dispersed evenly to obtain a mixture; the dispersant, polypropylene glycol diglycidyl ether, epoxy resin, and leveling agent are added to the above mixture and mixed evenly to obtain the interior wall insulation coating. The composition of this application achieves a comprehensive improvement in heat insulation, flame retardancy, and anti-corrosion performance.

The utility model belongs to superconducting technical field discloses a kind of high-temperature superconducting tape wrapping and detection system, including pay-off device, cleaning device, wrapping device, pressing device, traction device, meter device, visual identification device and take-up device sequentially arranged along the output direction of superconducting tape, the high-temperature superconducting tape wrapping and detection system can effectively remove the dirt and metal chips and other pollutants on the surface of tape, pretreat before wrapping high-temperature superconducting tape, ensure insulation wrapping effect, and the stacking distance of insulating tape can be detected, the quantitative detection of insulation effect after superconducting tape wrapping is realized, which is beneficial to improve wrapping effect.