41results about How to "Improve bending performance" patented technology

The invention discloses an environment-friendly rat-proof and ant-proof intelligent AI early warning cable and a production method thereof, and the cable comprises a central reinforcing core, three control wire cores and three main wire cores are distributed at the outer circumference of the central reinforcing core, and six edge reinforcing cores are filled in gaps at the outer sides of the three control wire cores and the three main wire cores in a saddle shape. A non-woven fabric wrapping layer is arranged outside the control wire cores and the main wire cores, an extruded isolation sleeve is arranged outside the wrapping layer, a steel tape armoring layer is arranged outside the extruded isolation sleeve, an extruded outer sheath is arranged outside the steel tape armoring layer, and a protective layer is arranged outside the extruded outer sheath. The cable has the beneficial effects that the structural stability, bending resistance and tensile resistance of the cable can be improved through design, and monitoring and early warning can be performed on the cable through the optical fiber, so that the service life of the cable is prolonged.

The application discloses a kind of all-around intelligent flexible ultrasonic transducer detection device and method, belong to medical ultrasonic detection technical field, the present application is by upper protective layer, metal shielding layer, insulating filler layer, upper layer printing electrode, piezoelectric layer, lower layer printing electrode, lower protective layer composition, wherein piezoelectric layer is by many piezoelectric array element composition radial multilayer ring belt, printing electrode layer is flexible electrode with "spider web structure" and "island-bridge" structure, metal shielding layer is added between protective layer and insulating layer absorption and reflection external electromagnetic wave;Annular positive pole is always connected with ultrasonic acquisition card channel, only need to make negative pole channel alternate connection, different angle radial array element can be made to work simultaneously, can be automatically attached skin, with flexibility and stretch performance, simultaneously using "ring-diameter" addressing flexible circuit design and addressing mode, less occupied ultrasonic acquisition card channel, and can realize automatic multiple position and multiple angle all-around ultrasonic detection.

The utility model discloses a bending device for profile processing, which relates to the technical field of profile processing and comprises a base. A fixing plate is fixedly connected to the top of the base, baffles are slidably installed at the two ends of the fixing plate, a threaded rod is rotationally connected to one side of the fixing plate through a bearing, an adjusting frame is installed on the outer surface of the threaded rod in a threaded mode, the surface of one side of each baffle is fixedly connected with the adjusting frame, and a third hand wheel is fixedly installed on one side of the threaded rod. The profile body is placed on the top of the base on the other side of the fixing plate. According to different required bending degrees of different profile bodies, the connecting plate and the ejection plate can be driven to move by rotating the screw rod, the adjusting frame can be driven to move by rotating the threaded rod according to the moving distance of the ejection plate, and the distance of the adjusting frame is correspondingly adjusted; and therefore, follow-up bending machining of different degrees can be conveniently conducted on the profile body, adjustment is convenient, the operation steps are simplified, and the flexibility of the device is improved.

This application provides an electronic device. The electronic device includes a flexible display panel, a back panel, and a hinge, with the back panel disposed between the flexible display panel and the hinge. The flexible display panel includes a connected unfolding portion and a bending portion, the bending portion being used for bending the flexible display panel. The back panel has a first blind hole, which is located on one side of the back panel and away from the flexible display panel. The hinge has a slit. Using the surface of the flexible display panel as a reference plane, the projection of the first blind hole onto the reference plane at least partially overlaps with the projection of the slit onto the reference plane. The first blind hole helps prevent display defects such as bright spots, black spots, and dead pixels from appearing on the flexible display panel, thereby improving the lifespan of the electronic device.

The utility model discloses an energy storage system DC cable comprising a conductor, and the outer side of the conductor is sequentially wrapped by a composite isolation layer, an insulation layer, an anti-spraying layer, a ceramic protection layer, a metal fiber shielding layer and a sheath layer. The conductor is of a layered winding structure, and the winding pitch is 6-8 times of the twisting outer diameter of the conductor. The direct-current cable of the energy storage system has excellent bending performance and tensile performance, also has excellent electrical insulation performance, and can ensure stable insulation performance in both high-temperature and low-temperature environments; meanwhile, the cable is fireproof, waterproof, damp-heat-resistant and excellent in flame retardant property; moreover, the cable can resist electromagnetic interference, thereby guaranteeing the stability of signal transmission. In addition, the cable is small in outer diameter and light in weight, and can meet the requirements of light weight and flexibility of the cable.

Provided is a technique for a steel sheet having a TS of 780 MPa or more and less than 1180 MPa, high YS, and excellent press formability of the inside and the ends of the steel sheet. A steel sheet in which a base steel sheet has a prescribed component composition and a Vickers hardness of 84% or less with respect to a position 1 / 4 of the sheet thickness from the surface of the base steel sheet, and which has a surface soft layer satisfying the following formula (1), the structure in the surface soft layer being within a specific range, and the structure in the position 1 / 4 of the sheet thickness of the base steel sheet being within a specific range, and a tensile strength of 780 MPa or more but less than 1180 MPa. 20 < = X < = 120-3800 * [Sb]-1900 * [Sn]... (1) (In formula (1), X is the thickness ([mu] m) of the soft surface layer, and [Sb] and [Sn] are respectively the contents (mass%) of Sb and Sn in the steel.

The utility model discloses a low-resistance hose for efficient conveying of a coal mine pipeline, and relates to the technical field of hoses for coal mine pipelines, the low-resistance hose for efficient conveying of the coal mine pipeline comprises a pipe body, inner ripples are arranged on the inner side of the pipe body, a threaded edge is arranged on one side of the outer wall of the pipe body, and the inner ripples are arranged on the other side of the outer wall of the pipe body. The outer ring of the threaded edge is sleeved with a threaded sleeve, one side of the threaded sleeve is connected with a positioning disc, the outer wall of the positioning disc is connected with a positioning head, the side wall of the positioning head is provided with a first threaded hole, the other end of the pipe body is connected with a connecting pipe, and the outer ring of the connecting pipe is provided with outer ripples. The outer ring of the outer corrugation is sleeved with a corrugated pipe sleeve, one side of the corrugated pipe sleeve is connected with a mounting disc, and a second threaded hole is formed in the outer wall of the mounting disc. The flexible pipe has the advantages of being convenient to assemble and disassemble, good in sealing performance and resistance, excellent in flexibility and rigidity and capable of adapting to complex pipeline layout.

The embodiment of the invention discloses a supporting piece, a preparation method of the supporting piece, a display module and electronic equipment, the supporting piece is used for supporting a display screen, and the display screen comprises a first non-bending part, a second non-bending part and a bending part; the supporting piece comprises a first supporting piece opposite to the first non-bending part, a second supporting piece opposite to the second non-bending part and a bending supporting piece opposite to the bending part, and the bending supporting piece is located between the first supporting piece and the second supporting piece; the bending supporting piece is provided with one or more through holes penetrating through the bending supporting piece, and an opening of each through hole is located in the surface, opposite to the bending portion, of the bending supporting piece. And the through hole is filled with a filling material, so that the impact resistance and the extrusion resistance of the electronic equipment can be improved. The elastic modulus of the filling material is smaller than that of the supporting piece, and the bending performance of the bending area of the supporting piece can be further improved.

This application provides an adsorption-type frame bonding method and structure for a lens. The adsorption-type frame bonding method includes: a first bonding platform and a first adsorption member connecting different regions of a first lens layer; a second bonding platform and a second adsorption member connecting different regions of the first lens layer; wherein the first bonding platform and the first adsorption member move synchronously, and the second bonding platform and the second adsorption member move synchronously; when the first lens layer and the second lens layer are connected by an adhesive, the first adsorption member stops moving and adsorbs the first lens layer, while the first bonding platform continues moving and bends the first lens layer; the second adsorption member stops moving and adsorbs the second lens layer, while the second bonding platform continues moving and bends the second lens layer, thereby ensuring the bending accuracy of the first and second lens layers.

This invention provides a hot-dip galvanized steel sheet with high YR (glucose content), high ductility, elongation flange and bending properties, and improved shear workability, with a TS (strength) of 1180 MPa or higher. The base steel sheet has a specified composition and microstructure, particularly with an aspect ratio of 2.0 or less: the proportion of residual γ (glucose content) exceeds 50%, the number of hardness frequency groups of 0.25 or higher is 1, the area ratio of quenched martensite in the surface layer is 80% or less, the surface softening thickness is 10 μm to 100 μm, and the diffusible hydrogen content in the low-temperature region is 0.015 ppm by mass or less.

This invention provides a high-strength steel plate with excellent tensile flange properties, bending and LME resistance, and capable of manufacturing parts with high dimensional accuracy. The high-strength steel plate of the present invention has the following composition: it contains C, Si, Mn, P, S, Al, N, Nb, Ti and B in specified amounts, such that [%Si] / [%Mn] is 0.10 to 0.60, the amount of free Ti is 0.001% by mass or more, and the remainder is composed of Fe and unavoidable impurities; it has the following steel structure: the total amount of Nb dissolved in the surface layer and the amount of precipitation below 100 nm is 0.002% by mass or more, at the 1 / 4 position of the plate thickness, the area fraction of martensite is 78% or more, the area fraction of ferrite is 10% or less, the volume fraction of retained austenite is less than 10.0%, the ratio of the grain size in the rolling direction to the grain size in the thickness direction of the original austenite grains is 2.0 or less, and the hardness variation frequency per 1500 μm in the width direction at the 200 μm position of the plate thickness is 10 times or less; and the high-strength steel plate has a tensile strength of 1180 MPa or more.

The present invention aims to provide a high-strength steel sheet having a TS of 980 MPa or more and excellent ductility, hole expandability, bendability, and hydrogen embrittlement bendability, and a method for manufacturing the same. A high-strength steel sheet having a prescribed composition, a steel structure in which ferrite is 1% or more and 40% or less in area ratio, fresh martensite is less than 1.0%, the sum of bainite and tempered martensite is 40% or more and 90% or less, retained austenite is 6% or more, a value obtained by dividing the average Mn amount (mass%) in the retained austenite by the average Mn amount (mass%) in the ferrite is 1.1 or more, and a value obtained by dividing the average C amount (mass%) in the retained austenite having a length-diameter ratio of 2.0 or more by the average C amount (mass%) in the ferrite is 3.0 or more, and the diffusible hydrogen amount in the steel is 0.3 mass ppm or less.

The utility model discloses a composite I-shaped beam structural plate based on 3D printing. The composite I-shaped beam structural plate is of a series of rectangular grid structures composed of a plurality of I-shaped beam components, a front-layer surface plate, a rear-layer surface plate, a left-layer surface plate, a right-layer surface plate and rectangular beams. The front and rear surface plates and the left and right surface plates are horizontally arranged in parallel and are mutually connected to form a rectangular frame structure; the I-shaped beams and the rectangular beams are arranged in the rectangular frame structure, the rectangular beams are arranged on the front portion and the rear portion of each row of I-shaped beam component set respectively, the two ends of each rectangular beam are connected with the left surface plate and the right surface plate, the rectangular beams are arranged in four rows, and each I-shaped beam component is connected with the front rectangular beam and the rear rectangular beam of the I-shaped beam component into an integrated structure. The composite I-beam structural slab based on 3D printing provided by the utility model has stronger mechanical properties and can meet the requirements of different working environments. The I-shaped beam structure has various mechanical properties such as excellent impact resistance, wearing resistance, folding resistance and bending performance.

This application relates to a floor assembly and a vehicle, belonging to the field of vehicle body reinforcement technology. The floor assembly includes: a longitudinal beam with a first inner cavity extending through it; the longitudinal beam includes at least two first reinforcing plates and at least one second reinforcing plate; the first reinforcing plates are spaced apart within the first inner cavity, and the second reinforcing plate is disposed within the first inner cavity and cross-connected to the first reinforcing plates; a crossbeam connected to the longitudinal beam; the crossbeam has a second inner cavity extending through it, and the crossbeam includes at least one third reinforcing plate and at least one fourth reinforcing plate; the third reinforcing plates are spaced apart within the second inner cavity, and the fourth reinforcing plate is disposed within the second inner cavity and cross-connected to the third reinforcing plates; and a mounting bracket disposed on the side of the longitudinal beam near the bottom of the vehicle and embedded in the first inner cavity, the mounting bracket being connected to at least two of the first reinforcing plates. The multi-cavity structure of this application can significantly increase the structural strength and deformation resistance of the longitudinal and crossbeams, improving the overall rigidity of the vehicle body.

The utility model relates to the technical field of power cables, in particular to a B1-level flame-retardant cold-resistant medium-voltage power cable, which comprises a plurality of mutually twisted wire cores and a water-blocking filling layer which are fixed together by a wrapping layer to form a cable core with a circular cross section. The outer wall of the cable core is coated with the composite wrapping layer; the inner sheath layer is extruded on the outer wall of the composite wrapping layer; the outer wall of the inner sheath layer is coated with the armor layer; and the outer sheath is extruded on the outer wall of the armor layer. According to the composite wrapping layer provided by the utility model, the foaming structure layer and the flame-retardant structure layer are adopted, flame-retardant-cold-resistant synergistic enhancement is realized, copper / aluminum foil is utilized to construct the physical barrier layer, the foaming layer absorbs mechanical stress, functional integrity is maintained under extreme conditions, and meanwhile, a composite tape is used for replacing a traditional glass tape flame-retardant structure, so that the weight of the cable is reduced, and the cable is more environment-friendly. The bending performance is improved, and the use requirement in a low-temperature environment is met.

The utility model relates to a composite radio frequency coaxial cable. The cable comprises an inner conductor which is of a spiral tubular structure; the optical fiber is embedded in the inner conductor, and an optical fiber filling ointment is filled between the optical fiber and the inner conductor; the insulating layer is arranged on the outer side of the inner conductor; the shielding layer is arranged on the outer side of the insulating layer; and the sheath layer is arranged on the outer side of the shielding layer. According to the utility model, the optical cable and the radio frequency coaxial cable are of an integrated structure, optical waves and radio frequency signals can be transmitted simultaneously, the advantages of the radio frequency coaxial cable structure and the optical cable transmission performance are combined, and the problems of easy damage, signal interference, low construction efficiency, poor compatibility with the existing system and the like of the optical cable in the prior art are solved; efficient and stable transmission of light wave and radio frequency signals is achieved, and meanwhile construction cost and difficulty are reduced.

This invention relates to the field of rare earth electrolysis processes, specifically to an oxide feeding control system and its control method, comprising: an oxide feeding device and a control module. The oxide feeding device includes a first hopper and a second hopper located below the first hopper. A control valve is installed between the first and second hoppers. A feeding mechanism is installed below the second hopper, and a loss-in-weight detection scale is installed at the bottom of the second hopper. The control valve includes a valve body, a drive motor, and a transmission component. A valve core is connected to the end of the transmission component. A spring is installed on the side wall of the valve body located below the valve core. A first vibration sensor is provided at one end of the spring near the side wall. The control module is electrically connected to the drive motor, the loss-in-weight detection scale, the first vibration sensor, and the second vibration sensor. When the second hopper is filled to more than 70% of the target weight, the speed of the motor auger is reduced. This invention reduces the impact on the sensors to an acceptable range, thereby achieving precise control.

The utility model relates to an angle steel bending machine, and relates to the technical field of angle steel machining equipment.The angle steel bending machine comprises a machining table, the upper end face of the machining table is rotationally connected with two limiting discs, an abutting block is arranged between the two limiting discs, a hydraulic cylinder is installed on the machining table, and a piston rod of the hydraulic cylinder is fixedly connected with the abutting block; the telescopic direction of the hydraulic cylinder is perpendicular to the connecting line between the circle centers of the two limiting discs, a resistance heating block used for being connected with angle steel in an abutting mode is arranged above the abutting block, and a lifting assembly used for driving the resistance heating block to ascend and descend is arranged on the machining table. The angle steel bending device can improve the angle steel bending effect.

The utility model discloses an anti-fracture LED lamp strip which comprises a flexible circuit board, the top end of the flexible circuit board is fixedly connected with a lamp bead, the top end of the flexible circuit board is fixedly connected with a heat conducting piece, the top end of the flexible circuit board is fixedly connected with a protective rubber plate, and the bottom of the protective rubber plate is provided with a heat dissipation groove. A mounting groove is formed in the bottom of the protective rubber plate, a light-transmitting groove is formed in the top of the mounting groove, and a protruding block is fixedly connected into the mounting groove. The protective rubber plate is additionally arranged on the flexible circuit board, so that the lamp strip is protected when being used, the lamp strip is prevented from being damaged due to contact with other objects, the heat conducting piece is arranged on the flexible circuit board, heat generated during work of the lamp strip can be conducted out and conducted into the heat dissipation holes through the heat dissipation grooves, and therefore the heat is discharged to the outside, and the service life of the lamp strip is prolonged. When the lamp strip is bent, the lamp strip can deform through the protruding blocks in the mounting grooves, and the protruding blocks abut against each other, so that rebounding can be achieved.

The utility model provides an ultrathin flexible bendable light guide plate structure, which belongs to the technical field of optical lighting equipment and comprises a bottom frame, a light-transmitting plate fixedly mounted on the inner wall of the bottom frame, a light-transmitting hole formed in the surface of the light-transmitting plate, a core component arranged on the inner wall of the light-transmitting plate and a connecting component arranged on the surface of the core component. The reflecting plate is fixedly connected to the inner wall of the bottom frame. Through the arrangement of the multi-layer composite structure, the excellent optical performance and the flexible bendable characteristic of the light guide plate in the ultrathin form are achieved, the polymethyl methacrylate core light guide layer is matched with the glass bead scattering layer, and even area light source output is achieved while the light conduction efficiency is guaranteed; due to the unique design of the flexible coating and the transparent polyimide substrate, the product has excellent bending performance and can adapt to various curved surface mounting requirements, and due to the combination of the ultrathin glass filling layer and the atomized PET film mounting layer, the structural stability is ensured, and good optical interface characteristics are maintained.

The purpose of this invention is to provide an optical laminate that exhibits low strain during bending, high flexibility, and excellent oblique reflectivity, particularly suitable for flexible displays. The optical laminate comprises, in sequence, a retardation film, a polarizer, and a transparent protective film, wherein the aforementioned retardation film contains a polarizer having a polarization density of 100 g / m². 2 A substrate film with a permeability of more than 24 hours and a liquid crystal curing film formed on the substrate film, wherein the thickness of the liquid crystal curing film is more than 0.5 μm and less than 3 μm, and satisfies the following formulas (1) and (2) in a single layer, wherein the aforementioned polarizer is composed of a polyvinyl alcohol resin film containing a dichroic pigment, the aforementioned transparent protective film has a total light transmittance of more than 90% and a 380 nm transmittance of less than 30%, and the aforementioned phase difference film, the aforementioned polarizer and the aforementioned transparent protective film are adjacent to each other through an adhesive layer. Re(450) / Re(550)≤1.00(1) 1.00≤Re(650) / Re(550)(2) [where Re(λ) represents the in-plane phase difference value at wavelength λ].

This invention discloses a glass fiber reinforced polypropylene material, its preparation method, and its application. The glass fiber reinforced polypropylene material comprises the following components in parts by weight: 55-95 parts polypropylene resin, 10-35 parts glass fiber, and 1-5 parts compatibilizer; wherein the polypropylene resin contains block copolymer polypropylene A and block copolymer polypropylene B in a weight ratio of (2-4):1; the average molecular weight M of block copolymer polypropylene A is... w The mass fraction of the copolymerized ethylene propylene diene monomer (EPDM) phase is 10%-20%, with a molecular weight of 200,000-290,000; the average molecular weight M of the block copolymerized polypropylene B is... w The mass fraction of the copolymerized ethylene propylene diene monomer (EPDM) phase is 11%-17% with a molecular weight ≥340,000. This invention produces glass fiber reinforced polypropylene materials by selecting block copolymers A and B with specific average molecular weights and EPDM phase contents. These materials exhibit strong tensile properties, flexural properties, and unnotched impact resistance under low-temperature conditions.

The present application relates to the technical field of endoscope, and provides an endoscope insertion tube and an endoscope, wherein the endoscope insertion tube comprises: an insertion part, the insertion part has a main body section and a bending section formed along an axial direction; the insertion part comprises an inner core, the inner core has multiple lumens formed along an axial direction, the multiple lumens comprise a working lumen, a water and gas lumen and multiple function lumens; the inner core is composed of an inner core main body part and an inner core extension part, the inner core main body part is located in the main body section, and the inner core extension part is located in the bending section; an end surface section of the inner core extension part is contained in an end surface section of the inner core main body part, and the end surface section area of the inner core extension part is smaller than the end surface section area of the inner core main body part; the inner core extension part only has the working lumen and the water and gas lumen; the endoscope insertion tube provided by the present application avoids the risk of lumen collapse or bending, and guarantees the use performance of each function device of the endoscope.

This utility model relates to the field of copper foil flexible connection technology, specifically a high-toughness copper foil flexible connection. The utility model includes a connecting piece, the middle of which is composed of multiple layers of copper foil, with a dividing opening extending through the middle of the connecting piece. The length of the dividing opening is the same as the length of the copper foil. A protective sleeve is fitted over the middle of the connecting piece, with a connecting opening in the middle that aligns with the dividing opening. An opening is formed on one side of the protective sleeve, and side strips are fixedly attached to both sides of the opening on the sidewall of the protective sleeve. A retaining strip is installed on the outside of both sets of side strips. By fitting the protective sleeve over the middle of the copper foil connecting piece, the middle portion is protected. The retaining strip on one side of the protective sleeve securely holds the two sets of side strips together, firmly securing the entire protective sleeve over the outside of the connecting piece. The outer protective sleeve of this high-toughness copper foil flexible connection is easy to disassemble, and the protective sleeve can be removed and reused after the copper foil connecting piece is scrapped, avoiding plastic waste and reducing scrapping costs.

A gas barrier laminate and a packaging material, the gas barrier laminate comprising (A) a layer (A) comprising an olefin-based substrate in which an inorganic layer is formed on at least one surface, and (B) a layer (B) comprising an ammonium salt of a resin having a carboxyl group and a polyvalent metal compound having 0.1-0.5 stoichiometric equivalent to the carboxyl group of the ammonium salt of the resin having a carboxyl group, the layer (B) contains an ammonium salt of a resin (P1) having a carboxyl group and a weight-average molecular weight of 3,000 to 200,000 and an ammonium salt of a resin (P2) having a carboxyl group and a weight-average molecular weight of 200,000 to 10,000 in the range P2 / P1 = 10 to 2000.

This invention relates to the field of fire-resistant insulated cable manufacturing technology, and discloses a continuous manufacturing process for high-yield mineral-insulated fire-resistant cables, comprising: pretreatment, drawing pure copper rods into wires and then stranding and pressing them to obtain stranded copper conductors; insulation wrapping, wrapping mica tape around the outer wall of the stranded copper conductors to obtain an insulating core; filling and forming, longitudinally wrapping copper tape around the outer wall of the insulating core, and filling the space between the copper tape and the insulating core with magnesium oxide powder to form an insulating layer; sheath welding, welding the gaps between the copper tapes after longitudinal wrapping to obtain a copper protective sheath; corrugating and shaping, rounding the copper protective sheath, and then rolling the copper protective sheath into a corrugated tube shape to obtain a cable; softening and straightening, performing a first annealing treatment and a second annealing treatment on the cable in sequence, and performing a first water cooling treatment on the cable after the first annealing treatment; protection and cooling, placing the cable after step six into a nitrogen pipeline for cooling, and then performing a second water cooling treatment on the cable.

The application discloses a dredging treatment equipment of a pipeline dredging robot and relates to the technical field of dredging treatment. The dredging treatment equipment comprises an open road device, a cleaner, a mover and a water spraying tank. The end surface of the open road device is fixedly connected with the cleaner. The end, away from the open road device, of the cleaner is sleeved on the inner wall of the mover. The end, away from the cleaner, of the mover is fixedly connected with the water spraying tank. The open road device comprises a driving motor. The shaftless end of the driving motor is fixedly connected with the cleaner. The dredging treatment equipment of the pipeline dredging robot can increase the bending effect of the external connecting rod through the rotation of the deflection rod, so that the cleaning sheet is no longer extruded against the inner wall of the pipeline. Thus, the rotation of the deflection rod is utilized to realize the contact relationship between the cleaning sheet and the inner wall of the pipeline, so that the cleaning sheet can be properly adjusted according to the size of the pipeline and the viscosity of the dirt on the inner wall of the pipeline.

The invention provides a bending structure, an insertion part and a medical catheter, and relates to the technical field of medical instruments. The device comprises a lining bending pipe and a traction rope, the lining bending pipe is of a pipe body structure which is continuously arranged in a closed mode in the circumferential direction, the far end of the traction rope is fixedly connected relative to the far end of the lining bending pipe, and the traction rope can apply traction force to the lining bending pipe; the action direction of the traction force deviates from the axial direction of the lining bent pipe. Compared with the prior art, the bending starting state can be optimized, the driving force needed by bending operation is reduced, the difficulty that the whole catheter achieves the bending action is reduced, and therefore the bending response performance and the control efficiency are improved.

The application discloses a boron nitride composite powder for epoxy pouring sealant and a preparation method thereof, and belongs to the technical field of electronic packaging materials and preparation thereof. The application solves the problem that the rheological behavior and multifunctional performance of the existing epoxy resin pouring sealant cannot be simultaneously compatible at high filler content. In the application, thermoplastic polyurethane (TPU) is used as an adhesive, h-BN layers are assembled into spherical hierarchical particles BN@TPU, and the BN@TPU is added to an epoxy system as a filler, so that the interface energy between the filler and the epoxy matrix is significantly reduced, excellent process flowability and operating viscosity can be maintained at high filler content, and the heat conduction performance is not lost. Experimental results show that the initial viscosity of the pouring sealant with a BN@TPU addition amount of 30wt% is obviously lower than that of a pure BN addition system with the same addition amount, the tensile strength is also significantly improved, and the processing window range is significantly widened.

The invention relates to the fields of biomedical diagnosis, wearable sensing equipment, ultrasonic imaging and the like, in particular to an antibacterial, pressure-resistant and clear-imaging gel coupling patch as well as a preparation method and application of the antibacterial, pressure-resistant and clear-imaging gel coupling patch. The gel coupling patch prepared by the invention is composed of the functional mixed monomer, the cross-linking agent, the inorganic salt, the water-soluble antibacterial agent, the water-soluble redox system, the solvent water and the auxiliary agent, has acoustic impedance close to that of human skin so as to reduce the loss of sound waves, and is excellent in antibacterial property and mechanical property, excellent in electrical conductivity and imaging property, environment-friendly, free of smearing and low in cost. And the ultrasonic probe has an attaching function, can effectively increase the transmission efficiency of ultrasonic signals, realizes long-term monitoring of a human body, and can be coupled with wireless equipment to realize remote monitoring, so that the accuracy of diagnosis and treatment is improved. The gel coupling patch disclosed by the invention has wide application prospects in the fields of medical ultrasonic imaging, wound nursing, beauty and skin care, biosensing, food industry, environmental monitoring and animal medicine.