121results about How to "Improve bending performance" patented technology

The invention relates to the technical field of titanium strip coils, in particular to a preparation method of a high-strength cold-rolled titanium strip coil for coiled tubing, which comprises the following steps: S1, cold rolling: a hot-rolled pickled coil with the thickness of 5.5-6.5 mm is subjected to cold rolling by adopting 20 rollers, and the hot-rolled pickled coil comprises the following components in percentage by mass: 0.26-0.33% of Fe, 0.27-0.33% of O and the balance of Ti; s2, degreasing is conducted, specifically, the titanium strip coil obtained after cold rolling is subjected to degreasing treatment; s3, annealing is conducted, specifically, a vertical bell-type furnace is filled with argon for protection for annealing treatment, furnace cooling is conducted after annealing is completed, and a titanium strip coil with the thickness being 3-4.5 mm for the coiled tubing is obtained; a cold rolling mode is adopted, the thickness of the titanium strip coil is rolled to 3.0-4.5 mm, a bell-type furnace annealing mode is adopted, an oxide layer is prevented from being generated on the surface, the bending performance of the titanium strip is enhanced, cracks are prevented from being formed on the surface during pipe manufacturing, the compressive strength, the yield strength and the ductility of the product are high, and the bending angle (6T) is large.

The invention discloses a glass fiber reinforced halogen-free flame-retardant high glowing filament PBT (polybutylene terephthalate) modified material and a preparation method thereof, and the glass fiber reinforced halogen-free flame-retardant high glowing filament PBT modified material comprises the following components in parts by weight: 28.5-44.5 parts of PBT resin, 0-10 parts of PET (polyethylene terephthalate) resin, 18-25 parts of a compound of organic hypophosphite and inorganic hypophosphite, 5-14 parts of a glowing filament synergist and 1-5 parts of a modified toughening agent, the invention relates to the technical field of high polymer materials, in particular to a high polymer material which comprises the following components in parts by weight: 0.1-0.5 part of an anti-transesterification agent, 0.2-1 part of an antioxidant, 0.2-1 part of a lubricant and 15-30 parts of glass fibers. The glowing filament has high mechanical properties and good fireproof performance, can meet the market demand that the glowing filament at 750 DEG C is not ignited in the whole process, meets the latest environment-friendly control requirement on the market, and has wide market application prospects.

The invention relates to the technical field of forming machines, and provides a thick profile machining forming machine which comprises a feeding workbench used for conveying a profile needing to be bent, a forming main machine used for conducting cold roll forming on the profile and a workbench used for bearing the profile subjected to cold roll forming. The feeding workbench comprises a first support, a guide rail arranged on the first support and a driven feeding trolley connected to the guide rail in a sliding mode, a clamp used for abutting against a profile is arranged on the driven feeding trolley, and a guide structure is arranged on the first support. The guide structure is used for driving the clamp to rotate in the direction away from the sectional material so as to relieve abutting against the sectional material. The forming main machine comprises a machine frame, a conventional rolling module, an acute-angle rolling module and a driving mechanism, wherein the conventional rolling module and the acute-angle rolling module are arranged on the machine frame, and the driving mechanism is arranged on one side of the machine frame. The acute-angle rolling module has the beneficial effect that the stability of the acute-angle rolling module in the bending process of the sectional material is improved, so that the bending effect of the sectional material is improved.

The invention belongs to the technical field of light sensation detection systems, and discloses an optical fiber hydrophone array connector structure and an optical fiber hydrophone array, the connector structure comprises a wedge block assembly, an optical fiber connector assembly, an inner sheath assembly and an outer bending resistance assembly, an inner wedge block in the wedge block assembly can tightly press a force bearing metal wire of an optical cable on the inner wall of an outer wedge block, and the outer wedge block can tightly press the force bearing metal wire of the optical cable on the inner wall of the outer wedge block; the optical fiber connector assembly sleeves the wedged end of the outer wedge-shaped block and allows an optical fiber unit to extend out, one end of the inner sheath assembly is buckled and pressed on one end, far away from the wedged end, of the outer wedge-shaped block, and the other end of the inner sheath assembly is connected with a protective surface layer of the optical cable in a sealing manner; one end of the half anti-bending sleeve is connected with the half anti-bending sleeve, the other end of the half anti-bending sleeve is connected with the rubber anti-bending sleeve, the half anti-bending sleeve comprises at least two half sleeve units, the inner buckling block part of one half sleeve unit is buckled on the outer buckling groove part of the other half sleeve unit in an angle-adjustable mode, and therefore the phenomenon that the half anti-bending sleeve is prone to being damaged due to large mechanical loads can be avoided.

The invention discloses a pressure sensor and a pressure sensor preparation method, and the pressure sensor comprises a first flexible substrate layer; the wiring layer is arranged on one side of the first flexible substrate layer; the first insulating layer comprises a via hole; the electrode layer is arranged on the side, away from the first flexible substrate layer, of the first insulating layer, the electrode layer comprises a pressure-sensitive electrode, and the pressure-sensitive electrode is electrically connected with the wiring layer through a via hole; the pressure-sensitive layer is arranged on the side, away from the first flexible substrate layer, of the electrode layer, the orthographic projection of the pressure-sensitive layer on the first flexible substrate layer and the orthographic projection of the pressure-sensitive electrode on the first flexible substrate layer at least partially coincide, the pressure-sensitive layer and the first insulating layer are connected through a bonding part, and a cavity structure is defined by the pressure-sensitive layer, the electrode layer and the bonding part; the second flexible substrate layer is arranged on the side, away from the first flexible substrate layer, of the pressure-sensitive layer. The stability and the use performance of the pressure sensor are effectively improved, large-area preparation of the flexible pressure sensor is facilitated, and the mass production feasibility is improved.

The invention discloses a woven reinforced polyether-ether-ketone composite conduit capable of being continuously produced and a processing method and application thereof, the woven reinforced polyether-ether-ketone composite conduit comprises an inner-layer pipe, a middle woven layer and an outer-layer pipe structure, and the inner-layer pipe, the middle woven layer and the outer-layer pipe structure are all made of polyether-ether-ketone; and the outer-layer pipe structure is formed outside the inner-layer pipe and the middle woven layer through a dip-coating process. The invention has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of facilitating continuous industrial production, improving the processing efficiency, reducing the economic burden of a patient, prolonging the service life and effectively improving the overall bending performance of the composite conduit.

The utility model relates to the technical field of textile equipment, in particular to a spinneret plate for fibers, which comprises a spinneret plate body and spinneret orifice groups on the spinneret plate body, a guide plate matched with the spinneret plate is arranged on the spinneret plate, and a plurality of guide orifice groups consisting of guide orifices in one-to-one correspondence with the spinneret orifices on the spinneret plate are arranged on the guide plate. The diversion hole is a cylindrical hole with a through upper part and a closed bottom part, and a diversion hole is formed in the side wall of the bottom of the diversion hole; the lower end of each flow guide hole in the flow guide plate is provided with a first confluence groove, and the upper end of each spinneret hole in the spinneret plate is provided with a second confluence groove. Spinning melt flowing in the flow guide holes is shunted through the shunting holes, so that the flowing spinning melt forms multiple strands of primary fiber materials with the same cross section shape at the shunting holes, the multiple strands of primary fiber materials are converged into the spinneret orifices, and finally fiber materials with a multi-dimensional internal structure are formed at the spinneret orifices. The toughness and bendability of the fiber material are improved.

The invention belongs to the technical field of intravascular stents, and particularly discloses a degradable peripheral artery stent, the cross section of the degradable peripheral artery stent is of an annular structure, the degradable peripheral artery stent is applied to the peripheral artery of the human body and comprises a plurality of supporting units and connecting units in the axial direction of the stent, the connecting units are located between the supporting units, and the adjacent supporting units are connected through the connecting units; the supporting unit comprises an end supporting unit and a middle supporting unit, and the end supporting unit and the middle supporting unit are each of a closed-loop structure formed by intersecting a sine-like curve and a reverse sine-like curve. The stent is integrally formed through a 3D printing technology, and is high in structural stability and good in flexibility. According to the degradable peripheral artery stent of the structure, degradable polylactic acid is adopted as a stent material, inflammatory reaction caused by the fact that the stent exists in blood vessels for a long time is greatly avoided, and the stent has good flexibility and adherence performance under the condition that the stent has enough radial supporting force; and the risk of restenosis after the stent operation is reduced.

The utility model discloses a polyethylene insulated cable, which relates to the technical field of cables, and comprises a cable body, the surface of the cable body is provided with a plurality of annular grooves at intervals, the annular grooves are symmetrically provided with a plurality of reinforcing raised lines, the reinforcing raised lines are respectively arranged on the annular grooves in an annular array, and the reinforcing raised lines are arranged in the annular grooves. The two symmetrical reinforcing protruding strips are arranged in a staggered mode, receding gaps are formed between the opposite ends of the reinforcing protruding strips and the roots of the annular grooves respectively, and a plurality of reinforcing ribs are arranged between every two adjacent annular grooves. According to the utility model, under the action of the annular groove, the stress concentration of the cable during bending is reduced, the cable material is allowed to be more freely deformed during bending, the risks of material damage and performance reduction caused by the stress concentration are reduced, in addition, the reinforcing raised lines improve the compression resistance and the compression resistance capability of the annular groove during deformation, and the service life of the cable is prolonged. The service life is further prolonged; the mechanical property of the surface is further improved.

The invention relates to a high-bending-formability heterogeneous magnesium alloy multilayer composite plate and a preparation method thereof, the composite plate adopts a three-layer structure, and comprises a middle AZ31 alloy layer and magnesium rare earth alloy layers on the two sides of the middle AZ31 alloy layer. The preparation method comprises the following steps: (1) carrying out homogenization treatment on AZ31 alloy and magnesium rare earth alloy cast ingots, processing the cast ingots into cuboid blanks with preset sizes, and removing surface oxidation films at the same time; (2) the blanks are stacked according to the mode of magnesium rare earth, AZ31 and magnesium rare earth, and the blanks are heated to 330-370 DEG C; and (3) extruding by using a symmetric extrusion die to obtain the plate with a three-layer composite structure. A channel of the extrusion die is composed of an inlet section, a conical transition section and an outlet section, and the included angle of the conical transition section ranges from 70 degrees to 110 degrees. The tension and compression asymmetry in the bending process of the plate is weakened through the multi-layer heterostructure, and therefore the forming performance of the plate is remarkably improved. The prepared composite board is subjected to a bending performance test, and the result shows that the formability of the composite board is superior to that of a single alloy board.

The invention relates to the technical field of explosion-proof boxes, in particular to a composite material for an explosion-proof box, a preparation method of the composite material and the explosion-proof box. The composite material for the explosion-proof box is prepared from the following raw materials in parts by weight: 18 to 22 parts of unsaturated polyester, 6 to 10 parts of low-profile shrinking agent, 0.3 to 0.7 part of high-activity initiator, 1.5 to 2.5 parts of internal release agent, 0.2 to 0.6 part of thickening agent, 25 to 35 parts of flame retardant, 30 to 38 parts of glass fiber, 0 to 3 parts of internal coloring pigment and 2.5 to 3.6 parts of auxiliary agent. The explosion-proof box has the advantage of reducing the potential safety hazard of leakage of the explosion-proof box.

The invention relates to the field of cables, and discloses a multifunctional special cable for a robot, two second arc-shaped plates are symmetrically arranged in a first air cavity, the second arc-shaped plates slide in the first air cavity, a plurality of second air cavities are formed in the circumference of a supporting body, the second air cavities are communicated with the first air cavity, and the second air cavities are communicated with the first air cavity. Two sliding plates are symmetrically arranged in the first air cavity, when an external substance collides and extrudes a cable, the external substance firstly makes contact with the first arc-shaped plate, the first arc-shaped plate shrinks inwards, while the first arc-shaped plate shrinks inwards, air in the second air cavity is pushed into the first air cavity, the air in the first air cavity is increased, the air pushes the second arc-shaped plate to slide outwards, and the cable is fixed. During sliding, the second arc-shaped plate abuts against the first arc-shaped plate, external impact and extrusion force is prevented from being transmitted to the conductor and damaging the cable, the situation that in the key production link, the cable is broken due to the fact that the cable is collided by a robot is avoided, the production process is continuously carried out, and the working efficiency is guaranteed.

The invention relates to the technical field of composite material preparation, and specifically discloses a composite preparation process for enhancing the mechanical properties of marine laminated wood. Wood powder, epoxy resin, antibacterial modified basalt fiber-titanium dioxide, a stabilizer and a curing agent are uniformly mixed, kneaded in an open mill, and hot-pressed in a hot press to obtain the marine laminated wood. The antibacterial modified basalt fiber-titanium dioxide contains a large number of active groups, which can form a three-dimensional staggered support network in a matrix, generate a cross-linked network structure, and effectively improve the mechanical properties of the matrix. The epoxy resin is used as an adhesive with strong bonding force, and can tightly bond the wood powder and other materials together, thereby reducing the waste of wood and improving the utilization rate of wood to achieve environmental benefits, forming a laminated wood with stable structure and high strength. Through a curing cross-linking reaction, a mesh structure can be formed, which further enhances the overall mechanical strength of the laminated wood and prolongs its service life.

The invention relates to the field of muck resource utilization, in particular to a multi-layer flexible mucky soil-based regenerated composite board and a preparation method and application thereof.The preparation method includes the steps that S1, polyethylene film blocks and a mucky soil solidified premix containing polyethylene fibers and mucky soil particles are prepared; s2, a layer of polyethylene film block is placed in the mold, then a layer of glue is brushed on the polyethylene film block, then a layer of mucky soil solidification premixed material is laid to form a premixed material layer, a layer of glue continues to be brushed on the premixed material layer, the operation is repeated in the mold to form prefabricated multi-layer composite boards which are alternately arranged from bottom to top, and the prefabricated multi-layer composite boards are formed; the uppermost layer and the lowermost layer of the prefabricated multi-layer composite board are both polyethylene film blocks; s3, repeatedly performing needling operation on the prefabricated multi-layer composite board, and then leveling to form a multi-layer composite board with fibers entangled layer by layer; and S4, the multi-layer composite board is cured, and hot pressing is conducted after curing is completed. Compared with the prior art, the application range of the sludge is enriched.

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 present invention discloses a capacitive flexible touch screen based on boron nitride and a preparation method thereof. The capacitive flexible touch screen includes a multifunctional film layer, a flexible film cover, a polarizer, a transparent insulating boron nitride-based touch electrode module, a film encapsulation layer, a flexible support layer, a buffer layer and a flexible metal layer from top to bottom; the transparent insulating boron nitride-based touch electrode module includes a first boron nitride layer, an upper indium tin oxide film, a second boron nitride layer, a fifth optically transparent adhesive OCA layer, a third boron nitride layer, a lower indium tin oxide film and a fourth boron nitride layer from top to bottom; the first boron nitride layer, the second boron nitride layer, the third boron nitride layer and the fourth boron nitride layer are all hexagonal boron nitride layers. The capacitive flexible touch screen based on boron nitride of the present invention has high transparency, good electrical insulation and strong chemical stability, and has high performance and reliability.

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 transmission structure based on mechanical transmission, which comprises a precision equipment transmission device body, the device is provided with an anti-skid soft plate matched with the outer side surface of a transmission crawler belt to carry out lap joint on equipment, the friction force between the device and the equipment is increased, a transmission rod is rotated by utilizing a rotator, and the transmission rod is driven to rotate. And when the transmission crawler belt moves, the flexibility and bendability of the interior of an anti-skid soft plate are improved in cooperation with a hollow groove, and the problem that when the equipment moves into a protective sleeve shell at present, the closed sealing waterproof cloth is pushed in cooperation with a storage device, and the equipment is not convenient to move is solved. The closed and sealed waterproof cloth is supported through the supporting roller, so that the closed and sealed waterproof cloth penetrates through the notch to move into the protective sleeve shell, and the closed and sealed waterproof cloth is matched with a heating dryer to rapidly dry internal equipment and is matched with an air extractor to absorb air from the bottom of the inner side of the protective sleeve shell; and gas is injected into the water vapor dilution mechanism.

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.

The application provides a display panel and a display device. The display panel has a display area, a bending area and a binding area. The bending area is located between the display area and the binding area. The display panel comprises a display substrate and a touch protection layer. The touch protection layer is arranged on the light-emitting side of the display substrate. The touch protection layer extends from the display area to the binding area through the bending area. The display panel provided by the application enables the touch protection layer to cover the part of the display substrate located in the bending area. The touch protection layer can replace the film layer of the part of the display substrate located in the bending area. The touch protection layer can effectively disperse stress during the bending process of the display panel, thereby improving the bending performance. Meanwhile, the overall laminated layer and thickness of the bending area can be thinned, which is conducive to the design of products with smaller bending radius and can also reduce the material cost.

The invention discloses a toughened modified oxygen barrier material and a flexible PE-RT oxygen barrier pipe. The oxygen barrier material is prepared from LLDPE, POE, modified dolomite powder, a coloring agent, an antioxidant and an ethylene-vinyl alcohol copolymer according to a certain ratio. The PE-RT oxygen barrier pipe is formed by co-extrusion of an inner plastic layer, a hot melt adhesive layer and an oxygen barrier outer layer, the inner plastic layer is formed by extrusion of raw materials including 100 parts by mass of PE-RT and 1-3 parts by mass of color master batch, the hot melt adhesive layer is formed by extrusion of PE hot melt adhesive, and the oxygen barrier outer layer is formed by extrusion of the toughened and modified oxygen barrier material. According to the prepared oxygen barrier pipe, the bending performance of the oxygen barrier layer is improved, the bending modulus is reduced, the problems that a PE-RT oxygen barrier pipe is difficult to bend, large in construction difficulty and the like are effectively solved, and meanwhile the oxygen barrier performance of the oxygen barrier pipe is further 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 invention provides a hyperbaric oxygen chamber oxygen inhalation mask for a patient with an indwelling stomach tube, and belongs to the technical field of medical instruments. Comprising an oxygen inhalation mask, a sputum suction mechanism is arranged on the inner side of the oxygen inhalation mask and used for sucking and removing sputum on the inner side of the nasal cavity of a stomach tube patient, the sputum suction mechanism comprises a second rubber hose fixedly connected to the inner side of the oxygen inhalation mask, and one end of the second rubber hose is fixedly connected with a corrugated hose; one end of the corrugated hose is fixedly connected with a first rubber hose; the stomach tube is arranged on the inner side of the second rubber hose and penetrates through the inner side of the first rubber hose, and sealing rubber used for sealing the first rubber hose and the stomach tube is arranged at the contact position of the inner side of the first rubber hose and the stomach tube. Through mutual cooperation of the sputum suction mechanism and the sputum removal mechanism, sputum in the nasal cavity can be sucked into the inner side of the corrugated hose through the Z-shaped through hole, and the effect of cleaning the nasal cavity of a patient is achieved.

The invention provides a flat photoelectric composite cable which comprises an optical unit, an electric unit and an outer sheath, the outer sheath comprises a first sheath, two second sheaths and two connecting parts, the two second sheaths are arranged on the two opposite sides of the first sheath at intervals in the first direction, and the two second sheaths are arranged on the two opposite sides of the first sheath at intervals in the second direction. The two second sheaths are respectively connected to the first sheath through the connecting parts; the optical unit is arranged in the first sheath, and the electric unit is arranged in at least one of the two second sheaths; wherein in the second direction, the outer diameter D2 of the second sheath is larger than or equal to the outer diameter D1 of the first sheath, the length L1 is limited by the connecting part, the second direction is perpendicular to the first direction, and the range of the ratio of L1 / D1 or L1 / D2 is 0.15-0.25.

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.

The utility model discloses a bending-resistant cable, which comprises main wire cores and filling strips, and is characterized by further comprising a support core, a wrapping layer, a braid layer and a sheath. And the main wire cores, the supporting cores and the filling strips are twisted to form the cable. And after cabling, a non-woven fabric is wrapped to form a wrapping layer. And the braid layer is formed by weaving aramid yarns outside the wrapping layer. And the sheath is extruded outside the braid layer by adopting chloroprene rubber. The cable is simple in structure, and is provided with the supporting cores, thereby greatly improving the tensile capability of the cable, and greatly improving the use safety.

The utility model provides a high-voltage jumper cable for a motor train unit, which belongs to the technical field of cables and comprises a cable body, the cable body comprises an elastic framework, a plurality of openings are arranged on the elastic framework at equal intervals in a surrounding manner, a wire core is arranged in each opening, a modified polyvinyl chloride insulating layer is arranged outside each wire core, and the modified polyvinyl chloride insulating layer is arranged outside the modified polyvinyl chloride insulating layer. A modified polyvinyl chloride insulating layer is arranged on the base, a shielding tape is arranged on the modified polyvinyl chloride insulating layer, the shielding tape is spirally wound on the modified polyvinyl chloride insulating layer, the modified polyvinyl chloride insulating layer comprises a plurality of aluminum wires which are woven with one another, and each aluminum wire is provided with an anti-oxidation coating. According to the utility model, the overall toughness and bending performance of the cable are improved, wiring and winding in a bridging area of the motor train unit are facilitated, the influence of a sleeve structure formed by existing metal wires is avoided very conveniently and effectively, and the labor intensity of workers is reduced.

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 present invention provides a butterfly cable for lightning protection and strong electricity, and relates to the technical field of butterfly cables. The antistatic agent containing thiadiazolyl phenyl borate molybdenum adopts dithiothiadiazole to carry out thiol-ene addition reaction with allyl glycidyl ether and 3-(2-carboxyvinyl) phenyl borate molybdenum complex respectively; the excess thiol is then subjected to thiol-amino addition reaction with dioctadecylamine to obtain the antistatic agent containing thiadiazolyl phenyl borate molybdenum, which contains thiadiazole, boric acid molybdenum, and glycidyl ether functional groups, and thiadiazole is a five-membered ring containing nitrogen and sulfur atoms, and has excellent electrical conductivity; the formation of boric acid molybdenum complex helps to prevent static electricity accumulation, and finally forms an antistatic agent with special lightning protection and static electricity effect; this antistatic agent has potential application value in the fields of electronic equipment, aerospace, and petrochemical industry.

The invention discloses a method for preparing high-strength engineering plastic from recycled PA66 plastic and application of the high-strength engineering plastic, and relates to the technical field of chemical engineering. The method at least comprises the following steps: warehousing and homogenizing the recycled PA66 plastic; crushing the homogenized PA66 plastic, uniformly premixing the crushed PA66 plastic with a chain extender and an antioxidant, and performing a first extrusion process to obtain rPA66; putting part of the rPA66, the antioxidant, the lubricant, the compatibilizer, the black sand and the light stabilizer into a high-speed mixer, and uniformly mixing to obtain a premix; and performing a second extrusion process on the premix, the modified carbon fiber and the remaining rPA66 to obtain the high-strength engineering plastic prepared from the recycled PA66 plastic, wherein the modified carbon fiber is obtained by modifying a silane coupling agent, carbon nanotubes and polyvinyl alcohol. The high-strength engineering plastic with excellent mechanical properties is obtained by modifying the carbon fibers through the grafted silanized carbon nanotubes and the polyvinyl alcohol to serve as a reinforcing agent for recycling the PA66 and cooperating with an optimized side feeding and fiber adding process.