346 results about "Fiber layer" patented technology

The invention discloses a halogen-free low-smoke optical cable communication cable, and relates to the technical field of communication cables, the halogen-free low-smoke optical cable communication cable comprises an optical fiber assembly, a communication assembly is arranged on the outer surface of the optical fiber assembly, and a chemical protection assembly is arranged on the outer surface of the communication assembly. According to the halogen-free low-smoke optical cable communication cable, in order to enhance the mechanical strength of the cable, the protective sleeve can improve the impact resistance of the cable, the thin steel layer can provide mechanical strength for the cable, the armor layer on the outer layer is used for resisting external corrosion, and the smoke suppression layer additionally arranged between the armor layer and the thin steel layer can reduce smoke generated when the cable burns; the glass fiber layer is an important reinforcing and protecting structure in the cable, the buffer layer prevents the optical fibers from being broken and the conductors from being deformed, and when the cable is subjected to external impact force, lubricating oil stored in an oil tank flows into the surface of the armor layer and permeates into the outer surface of the thin steel layer through the smoke suppression layer. The cable has an effective protection effect on mechanical strength resistant components in the cable, and the outermost wear-resistant layer depends on certain rigidity and toughness.

The present application relates to the field of disposable sanitary products, and particularly relates to an absorbent core with composite non-woven fabric, comprising a body, the body comprising an upper fiber layer, a lower fiber layer and an intermediate fiber layer clamped between the upper fiber layer and the lower fiber layer, the upper fiber layer, the lower fiber layer and the intermediate fiber layer are bonded to each other to form a bonding part, the area of the bonding part accounts for 5-100% of the area of the body, the fiber thickness of the upper fiber layer and / or the lower fiber layer is 4-12D, the fiber thickness of the intermediate fiber layer is 0.6-2D, the upper fiber layer and the lower fiber layer are inlaid with high molecular water-absorbing particles, the average pore of the upper fiber layer and the lower fiber layer is greater than the average diameter of the high molecular water-absorbing particles, and the average pore of the intermediate fiber layer is smaller than the average diameter of the high molecular water-absorbing particles. The present application solves the technical problem that the high molecular is prone to loss when the absorbent core is made of fluffy non-woven fabric.

The invention relates to a multi-layer glass fiber reinforced plastic production line, a production method and multi-layer glass fiber reinforced plastic, and relates to the field of glass fiber reinforced plastic production equipment.The multi-layer glass fiber reinforced plastic production line comprises a bottom film processing unit, a first fiber laying and gluing unit, a composite thickness determining unit, a heating and curing unit and a trimming and cutting unit which are sequentially arranged; the upper layer processing unit is capable of forming a top film gel coat on the top film and / or paving a second fiber layer on the top film and infiltrating a second resin adhesive on the top film and forming a semi-cured state, and the lower layer processing unit is capable of forming a second fiber layer on the top film and infiltrating a second resin adhesive on the top film and forming a semi-cured state. The composite thickness determining unit can lay the second fiber layer on the first fiber layer to form a composite glass fiber reinforced plastic material with a set thickness, and the composite glass fiber reinforced plastic material is heated and cured by the heating and curing unit and trimmed and cut by the trimming and cutting unit to form the composite glass fiber reinforced plastic, so that the production quality of the composite glass fiber reinforced plastic product can be ensured.

The invention discloses a Janus type flexible radiation refrigeration material and a preparation method thereof.The Janus type flexible radiation refrigeration material is characterized in that a modified radiation refrigeration layer and a functional layer are arranged on the upper surface and the lower surface of a substrate fiber layer with specific functional groups, and on one hand, the substrate fiber layer can be subjected to esterification or silanization bonding with the amino silane modified radiation refrigeration layer; the material can be subjected to an esterification reaction with a carboxylation modified functional layer, so that the three-layer material interface is chemically bonded, the bonding force of the interface is effectively improved, the dynamic stability is effectively improved on the basis of ensuring the optical performance and the mechanical flexibility, and the application of the radiation refrigeration material is promoted.

The invention discloses a composite hose structure for fuel gas transmission, and relates to the technical field of fuel gas transmission and distribution equipment, the composite hose structure comprises a dual-mode quick sealing assembly, dual-mode monitoring is formed by an FBG sensor, a phase-sensitive optical time domain reflectometer and a carbon tube composite filament, the FBG sensor can capture fine strain of a reinforced fiber layer in real time, and the phase-sensitive optical time domain reflectometer can capture the fine strain of the reinforced fiber layer in real time; the phase-sensitive optical time domain reflectometer detects and captures stress waves generated by crack propagation in a material through broadband sound waves, early recognition of millimeter-level damage in a pipe is achieved, grids woven by carbon tube composite filaments are utilized, continuity of the grids is monitored in real time through alternating-current impedance measurement, and the detection accuracy of the millimeter-level damage in the pipe is improved. When local grid resistance is increased due to breakage of the reinforced fiber layer, a micro-damage area can be accurately positioned, when leakage occurs, the memory alloy spring receives an electric signal monitored by a dual-mode, then axial thrust is generated to push the outer side of the fluororubber sealing ring, the fluororubber sealing ring expands in the radial direction under the thrust action of the memory alloy spring, and the leakage is prevented. And rapid and effective mechanical hard sealing is realized.

The utility model discloses a composite core mold which comprises a lining layer, a metal reinforcing layer and an outer covering layer which are sequentially connected from inside to outside, the axial length of the metal reinforcing layer is smaller than the axial length of the lining layer and the axial length of the outer covering layer, sealing layers are arranged on the two axial end faces of the metal reinforcing layer respectively, and the inner surfaces of the sealing layers are connected with the outer surface of the lining layer. The outer surface of the sealing layer is connected with the inner surface of the outer covering layer, and the metal reinforcing layer continuously stretches across the heavy load bearing area. The metal reinforcing layer with low cost and high bending modulus is additionally arranged between the two fiber layers, so that compared with a traditional pure fiber core mold, the core mold has the advantages that the bending modulus is higher, the cost is low, the bearing limit is larger, the weight is lighter under the condition of the same bearing performance, and the core mold is easier to transport; meanwhile, the sealing layer is arranged to prevent dissimilar metal pollution, and the winding quality of foil products is guaranteed; by ensuring the roundness of the metal reinforcing layer, the processing efficiency of the outer covering layer is improved, and the process difficulty is reduced.

The invention provides a high electromagnetic shielding color fiber and a preparation method and application thereof. The high electromagnetic shielding color fiber comprises a matrix fiber layer, an optical inert material layer attached to the surface of the matrix fiber layer, and an electromagnetic shielding functional coating attached to the surface of the optical inert material layer. According to the method, the fiber material is subjected to thermal annealing treatment at different temperatures, so that the obtained fiber material presents bright and high-saturation surface colors. And the obtained fiber material has high electromagnetic shielding capability, does not influence the original mechanical properties, can greatly improve the flame retardant property and oxidation resistance of the fiber material, and has good extreme environment service resistance.

The invention relates to the technical field of composite materials, in particular to a hybrid fiber composite material billiard cue. The hybrid fiber composite billiard cue comprises a front support and a rear handle, wherein the front support comprises a first core body, a first fiber layer and a first reinforcing layer, and the first fiber layer and the first reinforcing layer are sequentially stacked on the outer circumferential surface of the first core body; the rear handle is detachably connected with the front support; the rear handle comprises a second core body, and a second fiber layer, a second reinforcing layer and a protective layer which are sequentially stacked on the outer peripheral surface of the second core body; the first reinforcing layer and the second reinforcing layer each comprise a three-dimensional woven structure composed of various fibers. According to the design, the first reinforcing layer and the second reinforcing layer are arranged to be of the three-dimensional woven structure formed by weaving various fibers and are matched with the protective layer, the first fiber layer and the second fiber layer, the light weight and the corrosion resistance are guaranteed, and meanwhile the mechanical performance of the front branch and the rear handle in multiple directions is enhanced; the service life is prolonged; and the use experience is improved.

To provide a termite-proof heat insulating material and a termite-proof method capable of continuously protecting the heat insulating material from termites.SOLUTION: A termite-proofing heat insulating material 2A includes a heat insulating layer 20 having a first surface in contact with a base 1 of a building, a communication layer 30 provided on a second surface of the heat insulating layer 20 opposite to the first surface, and a fiber layer 70 provided on a side of the communication layer 30 opposite to the heat insulating layer 20 and including a nonwoven fabric. The communication layer 30 has a first surface portion, a second surface portion, and a main body portion connecting the first surface portion and the second surface portion, the first surface portion and the second surface portion are formed in a flat plate shape and are disposed at an interval in a thickness direction, and the vertical communication portion 41 is a space formed between the first surface portion and the second surface portion.SELECTED DRAWING: Figure 7

The invention provides a hot-blast stove pipeline gap repairing method which comprises the following steps: detecting a cracking gap of a hot-blast stove pipeline, mixing a repairing fiber layer with first repairing slurry to form a first mixed fiber layer, and putting the first mixed fiber layer into the cracking gap; and the damaged gap is filled with the first repairing slurry until the cracking gap is flat. The method has the beneficial effects that the repairing fiber layer and the first repairing slurry are mixed, the first mixed fiber layer is placed in the crack gap, large-scale brick replacement is not needed, the purchase cost and the manual construction cost are reduced, repairing can be rapidly completed, the repairing period can be shortened, and hot air can be effectively prevented from flowing.

An X-band high-efficiency absorber based on dispersive materials and resin belongs to the field of electromagnetic absorbing materials technology. The absorber consists of an N-layer structure, each layer being a combination of two fiber-reinforced laminates. The first fiber-reinforced laminate is a cross-shaped fiber laminate, with a square cross-section of the base portion having a side length of w, made of resin. The fiber portion has a cross-shaped cross-section, and the width of the fiber in the i-th layer is x. i Another type of fiber-reinforced laminate is an X-shaped fiber laminate. The base portion has a square cross-section with a side length of w, and is made of resin. The fiber portion is obtained by rotating the fiber portion of a cross-shaped fiber laminate around its center by 45°. The high-efficiency absorber proposed in this invention, based on dispersive materials as fibers and resin as a substrate, can achieve electromagnetic wave attenuation of over -20dB in the X-band (8GHz-12GHz) through excellent design. It achieves the absorption effect by converting electromagnetic energy into heat energy through dielectric loss.

The invention provides a low-temperature thermoplastic fiber composite board as well as a preparation method and application thereof, and belongs to the technical field of composite boards. Low-temperature thermoplastic resin and a fiber material are adopted as raw materials, prepreg is obtained through a softening impregnation method, a melting impregnation method, a powder impregnation method or a fiber and resin mixed impregnation method, the prepreg is put into a mold, hot press molding, cooling solidification and cutting are sequentially conducted, and the low-temperature thermoplastic fiber composite board is obtained. The fiber layer is impregnated in the low-temperature thermoplastic resin for hot press molding, different performance requirements of a target plate are met while the strength is improved by adjusting the spreading and compounding mode of the fiber layer, so that different clinical use requirements are met, low-temperature thermoplastic is achieved by impregnating the low-temperature thermoplastic resin, the bending modulus of the material is remarkably improved, and the material has a good application prospect. The high-strength low-temperature thermoplastic fiber composite board can be directly shaped and corrected on the body of a patient, and can fit the contour of the body of the patient and improve the comfort of the patient.

The application provides a door post cover and a preparation method thereof. The door post cover comprises a door post cover plate body, a handrail mounting area is arranged on the door post cover plate body, a transition area one is arranged between the lower part of the handrail mounting area and the door post cover plate body, the door post cover plate body comprises a cover plate common area one and a cover plate common area two, the handrail mounting area comprises a transition area two, a handrail common area and a transition area three, the transition area three extends to the cover plate common area one and the cover plate common area two respectively, the innermost side and the outermost side of the cover plate common area one, the cover plate common area two, the handrail common area, the transition area one, the transition area two and the transition area three are respectively an inner glass fiber layer and an outer glass fiber layer, and a carbon fiber layer is arranged between the inner glass fiber layer and the outer glass fiber layer. The preparation method is realized by die forming or hot press tank forming. The application solves the problems of large density, easy deformation and complex process of the current door post cover, and has the advantages of low cost, high efficiency and batch production.

The invention relates to an assembly (1) comprising at least a first composite component (2) made of a ply (4) of unidirectional fibre layers (41, 42, 43, 44, 45) in a thermoplastic or thermosetting matrix, the component (2) being intended to be connected to a second component (3) by means of a connection region (21), the support edge (22) of the component (2) being in contact with the support edge (32) of the second component (3), the assembly (1) comprises means (5) for connecting the first part with the second part. In the vicinity of the connecting area, the first part is composed of a laying layer (4), the laying layer is formed by stacking one-way layers (41, 42, 43, 44 and 45), and the fiber orientation angles of every two adjacent one-way layers are different. At least one cavity (6) is arranged in the first part in the vicinity of the connecting region, is parallel to the contact surface and is arranged in a direction perpendicular to the direction of the unidirectional layer (41, 42, 43, 44, 45); according to the invention, at least one hole (7) perpendicular to the contact surface is provided, starting from its supporting edge (22) and opening into the cavity (6) for receiving a threaded element (51), while the cavity and the second part (3) serve as a support for fastening elements (52, 53). The hole (7) can also be drilled along an axis inclined relative to the contact surface.

The invention belongs to the technical field of filter materials, and particularly relates to an electret enhanced composite filter material and a preparation method thereof.The electret enhanced composite filter material comprises a PET fiber layer, an aramid nanofiber layer and an alkali-free glass fiber layer from top to bottom, and the mass ratio of the PET fiber layer to the aramid nanofiber layer to the alkali-free glass fiber layer is (30-60): (5-20): (20-50). According to the invention, the PET fiber layer is used as a supporting base material, so that good mechanical strength, structural stability and a preliminary filtering function are provided for the composite filter material; the aramid nanofiber layer is arranged, so that the filtering precision and efficiency of the composite filter material are remarkably improved; the alkali-free glass fiber layer is arranged, so that the filtering performance and the thermal stability of the composite filter material are further enhanced; the three-layer structure has a synergistic effect, so that the mechanical strength and economical efficiency of the filter material are considered while the filter precision of 0.1 mu m is realized, and the filter material has excellent comprehensive performance.

The application discloses a high-durability micro-nano structure carbon ceramic composite brake disc and a preparation method thereof. Gradient nanoparticle distribution is used to realize the synergistic optimization of surface protection and core Si infiltration efficiency. A high SiC concentration is used in the surface layer to inhibit the corrosion of molten Si through a double mechanism of physical blocking and chemical passivation, and the friction coefficient fluctuation is significantly reduced. A low SiC concentration is used in the outer layer to reduce the penetration resistance of molten Si, ensure the uniformity of Si infiltration, and reduce the difference in the thermal expansion coefficient. Meanwhile, the lamination needling process improves the performance through a double mechanism of mechanical interlocking and fiber orientation optimization. The needling density of 12-20 needles per unit area makes the barb of the needle penetrate the carbon fiber layer to form a physical anchor, the needling process optimizes the Si infiltration channel, the interlayer gradient structure and the three-dimensional network formed by needling disperse the braking stress, and the interface debonding risk is reduced. In the high-strength frequent braking scene, the crack initiation probability is reduced, the local stress of the brake disc is reduced, the wear rate is effectively reduced, and the braking process is more stable.

The utility model relates to the technical field of plane conveying belts, and discloses an anti-static plane conveying belt which comprises an outer frame, a centering mechanism is fixedly connected to the surface of the outer frame, and an anti-static mechanism is connected to the surface of the outer frame in a threaded mode. According to the anti-static plane conveying belt, through the arrangement of the anti-static mechanism, the conductive fiber layer and the anti-static coating, when the anti-static plane conveying belt is used, the conductive fiber layer is installed on the surface of the conveying belt, and the surface of the conductive fiber layer is coated with the anti-static coating, on one hand, generation of static electricity is further prevented; the electrostatic electrification phenomenon caused by contact and separation of an object and the surface of the conveying belt is reduced; and on the other hand, when a small amount of static electricity breaks through defensive lines of the conductive fiber layer, the anti-static coating can rapidly neutralize and dissipate the residual static electricity, it is ensured that the surface of the conveying belt is in a low-static state all the time, the residual static electricity is conveyed to the ground in cooperation with conductive pieces, wires and ground pestles arranged on the two sides, and the safety of operators and surrounding equipment is guaranteed.

The invention belongs to the technical field of intelligent controlled-release antibacterial packaging, and particularly relates to a double-sided heterostructure humidity triggering fresh-keeping pad based on the MOFs confinement effect and a preparation method and application of the double-sided heterostructure humidity triggering fresh-keeping pad. According to the design of the fresh-keeping pad, high-sensitivity sensing of microenvironment humidity fluctuation and intelligent reversible and accurate controlled release of active ingredients are achieved, and the long-term stability of the active ingredients is remarkably improved. A double-sided heterogeneous fiber membrane design is adopted, and a stable hydrogen bond and physical cross-linked network is constructed by utilizing the interface complementary characteristic of different fiber layers, so that the material is endowed with excellent reversible swelling-shrinking capability in a wide humidity range; the structure collapse easily caused by a single material is effectively avoided, the problem of active ingredient explosive release caused by the structure collapse is thoroughly solved, and the repeatability and long-term stability of intelligent response are remarkably improved; due to the heterostructure design, one-way efficient transmission of water is ensured, water management is optimized, the overall fresh-keeping performance is further improved, and wide application prospects are achieved.

The application relates to a sound insulation cushion, a preparation method thereof and a vehicle, and particularly relates to the field of sound insulation materials, and the sound insulation cushion comprises a first fiber layer, a bonding layer and a second fiber layer which are sequentially connected; the first fiber layer comprises first PET fibers, second PET fibers and first superfine fibers; the second fiber layer comprises third PET fibers and second superfine fibers; the fineness of the first PET fibers is 1-3D; the fineness of the second PET fibers is 10-15D; the fineness of the third PET fibers is 1-3D; the fineness of the first superfine fibers is 0.1-0.6D; and the fineness of the second superfine fibers is 0.1-0.6D. The sound insulation cushion provided by the application realizes excellent sound absorption and insulation, light weight, environmental protection and durable comprehensive performance by utilizing the synergistic effect among the fibers of each layer of materials, and solves the pain points of poor sound insulation, poor smell, large weight and easy aging of the existing vehicle sound insulation cushion.

A composite internal waterway for a fluid coupling assembly is arranged generally circumferentially about a fluid axis, and includes first and second pluralities of layers. The first plurality of layers defines a fluid-facing internal surface of the composite internal waterway. The second plurality of layers is formed of an impact-resistant second fiber material, and is situated radially outward of the fluid-facing internal surface of the composite internal waterway. The first and second pluralities of fibers each include warp and weft fibers. At least some of the warp fibers are oriented circumferentially relative to fluid axis, and at least some of the weft fibers are oriented axially relative to the fluid axis. At least one of the first and second pluralities of fiber layers is oriented at a nonzero first conical angle relative to the fluid axis

A fiber bound engineered material is provided that imparts an intended characteristic at an intended relative location. A fiber layer is entangled with additional fibers in a manner to create a non-uniform engineered material. The lack of uniformity of a fiber bound engineered material may be accomplished through manipulation of the fibers and / or through fiber binding a scrim. The fiber layer binds with additional fibers through entanglement such that a mechanical connection between the entangled fibers is provided. This entanglement allows the fibers to bind without supplemental adhesives, interlacing, or connections. Variations in the fibers and / or inclusion of scrim materials prior to entanglement allows for an intended characteristic (e.g., a functional characteristic) at an intended relative location (e.g., a position determined by an article to be formed therefrom).

The utility model provides a hydrofoil plate structure, which solves the problem that the existing hydrofoil plate is easy to sink after being impacted, and comprises a core plate, the reinforcing part is formed by coating a plurality of carbon fiber layers or / and a plurality of glass fiber layers on the core plate in a fitting manner, coating resin on the surfaces of the plurality of carbon fiber layers or / and the plurality of glass fiber layers and then drying the surfaces of the plurality of carbon fiber layers or / and the plurality of glass fiber layers; the side surface reinforcing part is provided with at least one block body which is coated on the surface of the reinforcing part; the outer layer part is a plastic film which is coated on the surfaces of the side reinforcing part and the reinforcing part; the protective force of the side face of the wave plate is strengthened through the side face reinforcing part, meanwhile, the outer layer part maintains the integrity of the outside, and therefore the water wing plate is high in strength, rigidity and operability.

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

The invention relates to a bottom plate and a preparation method thereof, a battery pack and a vehicle, the bottom plate comprises a viscoelastic resin body, a first fiber layer and a second fiber layer, the first fiber layer and the second fiber layer are arranged in the viscoelastic resin body in the thickness direction of the viscoelastic resin body, the first fiber layer comprises first fibers, and the second fiber layer comprises second fibers. The second fiber layer comprises second fibers, and the length of the first fibers is larger than that of the second fibers. Therefore, the base plate is made of the viscoelastic resin body, the first fiber layer and the second fiber layer which are made of composite materials, the base plate is light in weight and good in impact resistance, the viscoelastic resin body can be wrapped outside the first fiber layer and the second fiber layer, and the first fiber is long and absorbs energy through stretching or breaking of the first fiber. And the second fibers are matched with the first fibers so as to fill gaps among the first fibers, so that a local reinforcing structure is formed, and the performance of the bottom plate is improved.

The present application belongs to the field of carbon fiber composite materials, and provides a shape memory based self-repairing carbon fiber composite material, which comprises a composite material body, the composite material body comprising a carbon fiber layer, a shape memory polymer base layer and a branch pipeline; the carbon fiber layer comprises first carbon fiber bundles and second carbon fiber bundles, the first carbon fiber bundles and the second carbon fiber bundles are woven into warp and weft lines, the first carbon fiber bundles and the second carbon fiber bundles are staggered to form a micro-embedded structure, and the shape memory polymer base layer is embedded in the micro-embedded structure after being formed; the branch pipeline comprises a hub part and an extension part, and the branch pipeline is arranged in a net-like structure in the composite material body; the shape memory polymer base layer and the carbon fiber layer are arranged, so that stress can be more effectively transmitted when the material is stressed, the overall strength of the composite material is enhanced, a self-repairing system is formed by the shape memory effect and the branch pipeline to realize self-repairing, the mechanical properties and functions are restored, and the service life is prolonged.

The utility model discloses a multi-layer composite dust removal filter material bag, which belongs to the technical field of dust removal filter material bags and comprises a filter material bag body and a cage frame, a high-temperature-resistant layer is woven on the surface of the filter material bag body and comprises a PPS (polyphenylene sulfite) fiber layer, a PI (polyimide) fiber layer and a PTFE (polytetrafluoroethylene) fiber layer, through holes are formed in the surface of the cage frame, and connecting columns are arranged in an inner cavity of the cage frame. The connecting column is fixedly connected with the cage frame through a group of reinforcing ribs, the PPS fiber layer, the PI fiber layer and the PTFE fiber layer are consistent in thickness and are 0.3 mm-0. 9mm in thickness, the inner surface of the PPS fiber layer is woven on the outer surface of the PI fiber layer, and the inner surface of the PI fiber layer is woven on the outer surface of the PTFE fiber layer. According to the high-temperature-resistant filter material bag, the characteristics of the PPS fiber layer, the PI fiber layer and the PTFE fiber layer are utilized, so that the filter material bag body has a high-temperature-resistant function and can resist erosion of high-temperature waste gas and corrosive substances, and damage caused by high temperature and chemical corrosion is reduced.

A crank comprising a coupling (1110) comprising: a first coupling fiber layer (210) and a third coupling fiber layer (230), each layer comprising one or more filaments (100) comprising fibers, the filaments arranged in a first path (210P1) forming a contour (210C1) comprising one or more splines (210S1, 210S2) matching a contour of one or more grooves (1510) of a splined coupling (1500) having a first axis of revolution (Z1), and a second path (210P2) that is concentric to the first path; and a second coupling fiber layer (220), comprised between the first coupling fiber layer and the third coupling fiber layer and comprising one or more filaments (100) comprising fibers, wherein one or more of the filaments of the second coupling fiber layer are arranged in a third path (220P1) at least a portion of which is concentric with a sector (210AS) of the first path and of the second path around the first axis (Z1).

The invention discloses a composite glasses structure, and relates to the technical field of glasses, the composite glasses structure comprises a first carbon fiber layer, a first TPU layer and a nylon layer which are arranged in order, the surface of the first carbon fiber layer is fixedly provided with a first epoxy resin layer, and the surface of the first TPU layer is fixedly provided with a second epoxy resin layer; a plurality of inwards-buckled first honeycomb holes are formed in the face, close to the first TPU layer, of the first epoxy resin layer, first TPU inwards-buckled parts are injected into the first honeycomb holes in a pressed mode, the first TPU inwards-buckled parts and the first TPU layer are integrally formed, and the first TPU layer and the nylon layer are bonded to each other; the invention further discloses a production process of the composite glasses structure. According to the invention, the first carbon fiber layer, the first TPU layer and the nylon layer are fixedly connected in sequence, and good elasticity, good tearing strength and excellent bending resistance of TPU are fully utilized, so that the composite material has the functions of good elasticity, higher bending degree and difficulty in breaking.

The invention relates to the technical field of non-woven materials and engineering, in particular to gradient aperture multilayer fiber composite wiping cloth and a preparation method thereof, and is characterized in that the wiping cloth is a multilayer fiber composite material with different gradient apertures, which is formed by carding kapok fibers and ES (Ethylene-Propylene-Styrene) fibers through a web forming process and needling reinforcement; wherein the ratio of the kapok to the ES fiber is 0: 100, 20: 80, 40: 60 and 60: 40, the tensile strength of the kapok fiber is 1.68 cN / dtex, the tensile strength of the ES fiber is 1.96 cN / dtex, the carding frequency of a fine opener is 40.42 HZ, the frequency of a pre-needling machine is 15.69 HZ, the positive and negative frequency of a main needling machine is 30.47 HZ, and the preparation linear speed is 10m / min; a set of automatic production line is constructed by integrating quantitative feeding, automatic circulation and hoisting systems, and by independently feeding and finely processing the ES / kapok fibers and combining the on-line weighing and static electricity elimination technology, it is ensured that the gram weight of a fiber layer is uniform, the structure is gradient, and the production efficiency is improved. And the automatic guide transport vehicle and the hoisting system realize full-process automatic circulation of materials.

This application discloses a specimen, fixture, and method for testing the interlaminar shear properties of fiber-reinforced composite materials. The specimen is integrally molded, generally strip-shaped and flat, with multiple stacked fiber layers inside. The thickness plane of the specimen is approximately parallel to the plane of the fiber layers. The specimen has a force-bearing portion at its center. Along its length, the specimen has a first clamping and fixing portion and a second clamping and fixing portion at each end. A first connecting portion is formed between the first clamping and fixing portion and the force-bearing portion, and a second connecting portion is formed between the second clamping and fixing portion and the force-bearing portion. The specimen is clamped and fixed to the testing equipment using the fixture, and then the testing equipment applies a tensile force to the specimen to perform a tensile test, resulting in good test accuracy. Furthermore, the specimen has a simple and compact structure, is easy to manufacture, and the fixture provides flexible and convenient assembly for the specimen.