94 results about "Fibrous layer" patented technology

Fibrous cleaning material and roller compositions for floor cleaners are provided. The fibrous cleaning material can include a plurality of unit fiber sections. Each unit fiber section in the plurality of unit fiber sections can include a first fine fiber material having a fineness of less than about 1 denier, a second fine fiber material having a fineness of between about 1 and 10 denier, a first bristle material having a fineness of between about 10 and 50 denier, and a second bristle material having a fineness of greater than about 100 denier. A bristle lay of the unit fiber section and a small fiber lay of the unit fiber section can be skew relative to each other.

Embodiments disclosed herein relate to a pleated filter element having filter media having a downstream layer of filter material and an upstream layer of fibers. A spacing structure defines a void space between the upstream layer of fibers and the downstream layer of filter material.

This application relates to the technical field of polymer materials, specifically disclosing a polytetrafluoroethylene (PTFE) sealing component and its preparation process. The PTFE sealing component comprises the following raw materials: 80-85 parts PTFE powder, 5-6 parts graphite powder, 6-8 parts glass fiber, 5-6 parts chopped carbon fiber, 4-5 parts ceramic powder, 2-4 parts Y₂O₃@CeO₂ core-shell particles, and 1-3 parts molybdenum disulfide. The preparation process includes the following steps: mixing PTFE powder, graphite powder, ceramic powder, Y₂O₃@CeO₂ core-shell particles, and molybdenum disulfide, ball milling, and drying to obtain a composite powder; uniformly mixing glass fiber and chopped carbon fiber to obtain mixed fibers; alternately layering the mixed fibers and composite powder, with the fiber layer located between two composite powder layers; cold isostatic pressing to obtain a green body; and hot-pressing and sintering the green body, followed by argon plasma treatment to obtain the PTFE sealing component. This application helps reduce the performance degradation of PTFE sealing components under long-term high-temperature environments.

The invention relates to a fibrous preform (40) formed by a plurality of superposed fibrous layers (20af; 20bf; 20cf; 20df) and comprising a first annular region (42) and a second flange region (43) extending from an axial edge (BA42) of the first region, the preform comprising a first layer A (20af) of unidirectional fibers oriented at an angle (a1) of between -10° and +100 relative to a circumferential direction (DC), which is formed by continuous fibers (24a) on the first region and by discontinuous fibers (25a) distributed in a plurality of rows (R1f... Rnf) on each second region, wherein a circumferential spacing (e1; en) between adjacent discontinuous fibers of the same row increases with increasing distance from the axial edge of the first region.

An apparatus and method for reinforcing a nonwoven fabric comprising at least one layer of unreinforced nonwoven fabric and / or one layer of loose fibers, the apparatus having at least one transport platform configured for transporting the unreinforced nonwoven fabric and / or loose fiber layer, the transport platform having a circulating conveyor belt having a first horizontal section, followed by a second downwardly sloping section along the material transport direction, having a first cylinder with at least two water jet beams along the material transport direction, and a second cylinder with at least two water jet beams disposed above the first cylinder. The invention is characterized in that the first cylinder for receiving the nonwoven fabric or loose fiber layer cooperates with the downwardly sloping section of the transport platform such that the upper side of the unreinforced nonwoven fabric or the upper side of the loose fiber layer is located on the cylinder surface.

The invention relates to a tailorable anti-fungal multi-point penetrating press-fit sewing dressing and preparation and application thereof.The method comprises the following steps that a high polymer material solution and an anti-fungal medicine solution are mixed, liquid-phase matter is subjected to defoaming treatment, spinning is conducted, curing is conducted through a fixing solution, and the tailorable anti-fungal multi-point penetrating press-fit sewing dressing is obtained; performing rinsing, drying, opening, needling, freeze-drying and vacuum drying on the obtained condensate, and then compounding the condensate with a gelatin layer and a surface layer to obtain the tailorable antifungal multi-point penetrating press-fit sewing dressing. Compared with the prior art, the preparation method has the advantages that an antifungal drug is introduced and compounded with a high polymer material, the compound is prepared into the drug-containing fiber, and then the drug-containing fiber layer and other material layers are prepared into a final product through a modern textile technology. The product can realize long-acting sterilization and bacteriostasis, and solves the problems of difficult administration, poor curative effect, repeated disease course, patient compliance and the like of body surface fungal infection at present.

The invention discloses a silk fibroin-based bionic artificial tympanic membrane with a gradient structure and a preparation method thereof, and the preparation method comprises the following steps: wrapping and dissolving an antibacterial drug in an organic solvent, then dropwise adding into a silk fibroin solution, casting to form a membrane, and then inducing by methanol to form a beta-folded structure to obtain an outer compact layer; carrying out electrostatic spinning on the silk fibroin solution to obtain a directionally arranged silk fibroin fiber felt, and soaking and cross-linking in an ethanol solution to obtain a middle fiber layer; mixing the silk fibroin solution with a pore-foaming agent, and pouring the mixture on the middle fiber layer; covering the middle fiber layer with the outer compact layer, pre-freezing and freeze-drying, immersing into deionized water to dissolve out the pore-foaming agent so as to form an inner porous layer, putting into a PBS buffer solution containing growth factors for oscillation treatment, and drying, thereby obtaining the silk fibroin-based bionic artificial tympanic membrane with the gradient structure. The artificial tympanic membrane with the three-layer bionic structure has antibacterial and regeneration promoting functions, has excellent mechanical properties and meets the requirements of bionic tympanic membranes.

The utility model relates to the technical field of armor bulletproof, in particular to a passive electromagnetic protection structure which sequentially comprises high-density fiber cloth, a buffer gel layer, an outer metal layer, a porous ceramic layer, a loose fiber layer and an inner metal layer from outside to inside. The high-density fiber cloth fiber composite material and the buffer gel layer are shear thickening gel, the outer metal layer and the inner metal layer are steel plates or aluminum alloys made of the same material and are connected with a high-power pulse power supply, the porous ceramic layer is porous ceramic, the porosity is 10-40%, and the loose fiber layer is felt. According to the passive electromagnetic protection structure, each layer can exert the independent projectile blocking capacity from outside to inside, and the damage of a single incoming projectile can be greatly reduced by combining the passive electromagnetic protection function, so that the passive electromagnetic protection structure has the capacity of resisting continuous shooting of a plurality of projectiles.

To provide a fiber laminated structure and waterproof breathable clothing having a highly practical waterproof breathable function with excellent light fastness and excellent recycling efficiency, the fiber laminated structure of the present invention is a fiber laminated structure including a 10 to 30 μm-thick non-porous film including a polyester film laminated on one surface of a woven fabric including a polyester fiber, wherein the polyester film contains 0.05 to 1.0 mass % of an ultraviolet absorber and a light stabilizer each, and 0.1 to 1.0 mass % of a titanium oxide having a band gap of 3.1 (eV) or more. The above fiber laminated structure can be suitably used for the waterproof breathable clothing.

A manufacturing method for a fibrous composite bicycle rim, and a tool having two molding devices and one circular device. The two molding devices each have one flank contact surface. A molding device is selected and a matching auxiliary molding part is connected therewith, forming a mold surface for the rim base. A first fiber composite layer is applied to the molding device and the auxiliary molding part. The other molding device is covered with a first fiber composite layer, forming the layer of the other rim flank. A circular device is formed of annular segments has a circumferential rim well contact surface and is covered by a first fiber layer, which forms the rim well. The circular device and the molding devices are connected. The fibrous composite material is allowed to set, the annular segments and the molding devices are removed, and the rim is taken out.

Body outer skin component made of fiber-reinforced plastic or of a fiber-plastic composite comprising several fiber layers with at least one fiber interlayer (5), comprising a textile fabric consisting of natural fibers, comprising a fiber outer layer (3), comprising a textile fabric consisting of chemical fibers and comprising a fiber middle layer (7), comprising a knitted fabric made of chemical fiber, wherein the fiber interlayer (5) is formed from a non-woven or woven fabric.

The invention relates to an antibacterial functional fabric and a shaping processing device thereof, and belongs to the technical field of fabric processing, the fabric comprises a hydrophobic layer, a latticed carrier layer and a hydrophilic fiber layer which are sequentially stacked, and an antibacterial agent is physically filled in a hollow porous fiber inner cavity and is slowly released through micropores to realize long-acting stable loading. The processing device comprises a roller for guiding the fabric to form an S-shaped path and a plurality of layers of air boxes; hot air passes through the S-shaped air channel of the inner cavity, is effectively sterilized by the high-temperature-resistant ultraviolet lamp and then is conveyed to each air bellow. The device is provided with a jacking mechanism for intermittently adjusting the drying distance, a pneumatic heat balance mechanism is designed, and local heat accumulation of the contact area of the fabric and the carrier rollers is accurately eliminated through a reciprocating sweeping same-temperature preheating air knife. The technical problems of easy loss of antibacterial components, guide roller hot stamping, secondary pollution and the like are solved, and high-quality shaping processing is realized.

The utility model relates to the technical field of polyester fiber filter cloth, in particular to a double-sided special-shaped polyester fiber filter cloth structure, which comprises a basic fiber layer and special-shaped polyester fiber layers woven on two sides of the basic fiber layer, and the mesh aperture of the basic fiber layer is larger than that of the special-shaped polyester fiber layers. The basic fiber layer is used for supporting the special-shaped polyester fiber layers on the two sides and keeping the shapes of the special-shaped polyester fiber layers, filtering treatment is provided for flowing media through the special-shaped polyester fiber layers, and the basic fiber layer is matched to prevent the media from being blocked; the silver ion coating layer is used for inhibiting bacteria from being adsorbed on the surfaces of the basic fiber layer and the special-shaped polyester fiber layer, preventing the bacteria from damaging the internal structures of the surfaces of the basic fiber layer and the special-shaped polyester fiber layer, and providing disinfection treatment for a flowing medium.

The invention discloses a composite material and a preparation method thereof. The flax waste is subjected to low-viscosity resin infiltration and compaction treatment to form a compact core layer, the core layer can be further processed into plates or structural parts with different interface structures according to needs, a natural fiber woven prepreg layer is attached to the outer surface of the core layer, secondary compaction and curing are achieved through mold pressing or hot pressing, and the integrally-formed composite material is obtained. The strength, modulus and moisture-proof stability of the plant waste core layer are improved, the natural fiber layer enhances the interface bonding and bending performance, and the composite material is suitable for the fields of buildings and engineering and has high bio-based content and good structural performance.

Disclosed is a sheet-like absorbent body comprising: a fiber layer comprising hydrophilic fibers; and a particle layer that is formed on one surface or both surfaces of the fiber layer and contains first water-absorbent resin particles, and the fiber layer optionally contains second water-absorbent resin particles. The weight per unit area of the first water-absorbent resin particles in one particle layer is 40 g / m2 or more. The water absorption rate of the first water-absorbent resin particles with respect to the physiological saline is 20 seconds or less. The weight per unit area of the hydrophilic fibers in the fiber layer is 20 g / m2 or more and 180 g / m2 or less. The ratio of the amount of the first water-absorbent resin particles is 60 mass% or more and 100 mass% or less based on the total mass of the first water-absorbent resin particles and the second water-absorbent resin particles.

This invention discloses a protective mask with synergistic cooling functions of radiation and evaporation, and its preparation method. The mask consists of inner and outer functional support layers and a core filter layer. The inner and outer functional support layers are made of polylactic acid (PLA) spunbond nonwoven material and spunlace nonwoven material, respectively. The core filter layer is an electrospun Janus PLA micro / nanofiber membrane with unidirectional moisture-wicking function. The core filter layer is composed of a hydrophobic PLA fiber layer and a hydrophilic modified PLA@PEO fiber layer, forming an inner and outer hydrophobic gradient to achieve rapid unidirectional moisture transfer from the inside to the outside and moisture evaporation cooling. In addition, the protective mask utilizes the high infrared emissivity of PLA material and the strong solar reflection characteristics of the electrospun micro / nanofiber structure to achieve radiative cooling. This invention can achieve synergistic cooling effects of radiation and evaporation while ensuring high filtration efficiency and particulate matter protection, improving thermal and humidity comfort when wearing the protective mask for extended periods.

This application discloses a nonwoven fabric for an atomizing core and its preparation method. The nonwoven fabric for the atomizing core includes a lower fiber layer, a middle fiber layer, and an upper fiber layer stacked together. The upper fiber layer comprises, by weight, 30-40 parts of a first polyimide fiber and 60-70 parts of pure cotton fiber. The middle fiber layer comprises, by weight, 10-50 parts of a second polyimide fiber, 20-40 parts of pure cotton fiber, and 30-50 parts of viscose fiber. The lower fiber layer comprises, by weight, 100 parts of viscose fiber. The fineness of the first polyimide fiber is greater than that of the second polyimide fiber. The beneficial effect of this application is that it provides a nonwoven fabric for an atomizing core that combines heat resistance and oil-wicking properties, and its preparation method.

The application discloses a kind of drip-proof flame-retardant films and its manufacturing method, belong to plastic film field.The drip-proof flame-retardant film includes: composite flame-retardant polyester film base film, at least one surface of the base film is equipped with thermal adhesive layer;The thermal adhesive layer is made of low-melting-point polyester material, the melting point of the low-melting-point polyester material is lower than 150 DEG C;The base film contains flame-retardant component;In the surface of the thermal adhesive layer, there is incombustible fiber layer.The flow ability of molten polyester film is limited under the physical hindering effect of incombustible fiber layer, and the occurrence of dripping phenomenon is effectively prevented.Experimental data show that when fiber length is greater than or equal to 8mm and the amount of addition is greater than or equal to 10 cm / cm 2 , no dripping can be achieved.The phosphorus flame retardant compounded in the base film can effectively inhibit combustion, and the physical barrier effect of the incombustible fiber layer can make the film reach a high flame-retardant grade.

This invention discloses a protective helmet and its material-structure shape-form coordination design and manufacturing method. The method includes the following steps: Aramid III and high-molecular-weight polyethylene are composited into a rigid-flexible heterogeneous gradient composite fiber layer using a hot-pressing process, which serves as the outermost layer of the helmet body; a polyurethane elastomer material is manufactured into an energy-absorbing and shock-absorbing layer using an additive manufacturing process, which is then attached to the top inner side of the helmet body and placed as the middle layer; and a polyethylene polymer material is molded into a reinforcing patch layer using a high-temperature molding process, which is then attached to the key protection area on the top inner side of the middle layer and placed as the innermost layer. This invention effectively improves the protective performance and impact resistance of the helmet, reduces its weight, increases the flexibility and mobility of soldiers on the battlefield, and enhances their combat capabilities.

The utility model provides a lightweight impact-resistant corrosion-resistant glass fiber reinforced plastic molded board, which relates to the technical field of glass fiber reinforced plastic molded boards and comprises a corrosion-resistant structure, a coating layer is arranged on the outer wall of one side of the corrosion-resistant structure, an impact-resistant structure is connected to one side, far away from the coating layer, of the corrosion-resistant structure, and the corrosion-resistant structure is connected with the coating layer. Comprising a corrosion-resistant layer arranged on the outer wall of one side of a coating layer, an additive body is arranged on the corrosion-resistant layer, and one side of the inner wall of the corrosion-resistant layer is fixedly connected with a fiber layer. The utility model solves the problems that the existing glass fiber reinforced plastic molded board mostly adopts a conventional resin and common glass fiber reinforced structure, is relatively insufficient in weather resistance and impact resistance, is easy to age and crack under long-term ultraviolet irradiation, is easy to lose impact under the action of dynamic load or sudden impact, and is not easy to damage. And the problems that pores and microcracks are generated due to non-uniform resin infiltration or low fiber arrangement precision, and the defects can cause corrosion medium permeation and accelerate performance degradation of the material are solved.

The application provides a multilayer polymer biomimetic membrane for dura mater repair and a preparation method thereof. The biomimetic membrane comprises a three-layer biomimetic nanofiber composite structure: a cell adhesion inner layer on the side facing the brain tissue, an anti-adhesion outer layer on the side facing the skull, and an intermediate reinforcing layer between the cell adhesion inner layer and the anti-adhesion outer layer. The cell adhesion inner layer is a PCL / chitosan / collagen composite fiber layer, the intermediate reinforcing layer is a PCL / hydroxyapatite composite fiber layer, and the anti-adhesion outer layer is a PCL / polylactic acid-hydroxyacetic acid copolymer (PLGA) layer. The method comprises cell adhesion inner layer preparation, intermediate reinforcing layer preparation, anti-adhesion outer layer preparation, and continuous production processing. The application obtains a multilayer artificial dura mater with strong interlayer bonding, high adhesion, and biomimetic mechanical properties.

A floor mat has a base formed of an elastomer. A fibrous layer insert has a peripheral margin protected by a peripheral wall and an inwardly extending overhang of the base. A flange of the base surrounds and downwardly extends from the peripheral wall and ends at a floor plane. Spaced-apart flange support ribs downwardly extend from a lower surface of the flange to the floor plane.

The application relates to the technical field of vehicles, and provides a bladder skin structure, an air spring, a suspension system and a vehicle. The bladder skin structure comprises a bladder skin main body and a fiber layer. The bladder skin main body comprises at least two functional sections. The fiber layer is arranged in the bladder skin main body and comprises fiber parts located in different functional sections, and the design parameters of the fiber parts are different. Therefore, the bladder skin structure can have sufficient strength in different functional sections, and the phenomenon of local stress concentration or unreasonable deformation of the bladder skin can be improved, so that material damage and fatigue failure of the bladder skin structure are delayed.

The invention provides a high-thermal-conductivity carbon fiber composite material, and belongs to the technical field of thermal conductive materials. The high-thermal-conductivity carbon fiber composite material comprises an upper skin layer, a first carbon fiber layer, a first middle interlayer, a second carbon fiber layer, a second middle interlayer, a third carbon fiber layer and a lower skin layer which are sequentially stacked, every two adjacent layers are connected through a heat-conducting glue layer; the upper skin layer and the lower skin layer are independently made of one or more of aluminum alloy, aramid fiber and high-modulus polyethylene; the first middle interlayer and the second middle interlayer are made of aluminum alloy. The carbon fibers are high in strength and light in weight, the aluminum alloy has an excellent electromagnetic shielding effect, and the heat-conducting glue has excellent heat conduction and heat dissipation performance, so that the high-heat-conductivity carbon fiber composite material provided by the invention completely meets the comprehensive performance requirements of high strength, light weight, electromagnetic shielding and heat dissipation required by the electronic box.

The invention discloses a composite absorption pad and a preparation method thereof, and relates to the technical field of sanitary absorption products. The composite absorption pad comprises a first composite functional layer, an absorption layer and a second composite functional layer which are sequentially arranged in a laminated mode from bottom to top, each of the first composite functional layer and the second composite functional layer comprises a hydrophobic silk fibroin nanofiber layer and a hydrophilic silk fibroin nanofiber layer, and the absorption layer is sodium hyaluronate; wherein the difference value of a static contact angle between the hydrophilic silk fibroin nanofiber layer and the hydrophobic silk fibroin nanofiber layer is greater than or equal to 30 degrees, so that one-way diversion from the hydrophobic silk fibroin nanofiber layer to the hydrophilic silk fibroin nanofiber layer is formed. According to the composite absorption pad, the absorption performance can be improved, meanwhile, rapid liquid conduction, back seepage prevention, lightness, thinness, comfort, long-term use safety and environmental friendliness are considered, and the composite absorption pad does not depend on chemical auxiliaries.

The application relates to the technical field of artificial prostheses, and discloses an artificial cervical intervertebral disc based on a biological bionic structure, which comprises an upper endplate, a lower endplate and an elastic body core arranged between the upper endplate and the lower endplate; the elastic body core comprises an anterior annulus fibrosus, a nucleus pulposus and a posterior annulus fibrosus; the anterior annulus fibrosus is composed of an outer fiber layer, an intermediate transition layer and an inner fiber layer and anterior collagen fibers arranged between the fiber layers; the application reproduces the structural composition and configuration of a biological cervical intervertebral disc, adopts differentiated arrangement of the anterior and posterior annulus fibrosus, gradient inclination angle design of the collagen fibers, elastic deformation characteristics of the nucleus pulposus and material combination with different elastic moduli, so that the artificial cervical intervertebral disc can be more naturally matched with the physiological movement mode of the vertebrae after being implanted; and the irregular endplate is more suitable for the cervical uncinate joint and is adapted to complex movement in multiple directions.

The invention belongs to the technical field of medical dressings, and particularly relates to a sunken scar repair dressing and a preparation method thereof. The concave scar repair dressing comprises a hydrophilic fiber layer, a hydrophobic barrier layer and a biological active layer which are sequentially arranged from the side in contact with a wound surface to the outside, the hydrophobic barrier layer is partially combined on the surface of the hydrophilic fiber layer in a physical embedding manner, and the bioactive layer is fixed on the outer side of the hydrophobic barrier layer in a chemical crosslinking manner; the hydrophilic fiber layer is composed of polyvinyl alcohol / hyaluronic acid composite fibers prepared through electrostatic spinning. The three-layer structure of the dressing simulates partial functional gradient of the skin, covers hydrophilic absorption, barrier protection and active repair, and better meets physiological repair requirements. According to the invention, interlayer combination is realized through two mechanisms of physical embedding and chemical crosslinking, so that the integrity and durability of the dressing are remarkably improved, and layering during use is avoided.

The utility model provides a paper diaper, which relates to the technical field of hygienic products and comprises a skin-friendly contact layer, a flow guide diffusion layer, an odor removal adsorption layer and a leakage-proof breathable layer which are sequentially connected in a composite mode from inside to outside. The flow guide diffusion layer comprises a wood pulp composite fiber layer provided with a plurality of longitudinally arranged flow guide grooves and a plurality of transversely arranged hydrophobic fiber bundles; the odor removal adsorption layer comprises a porous adsorption net layer and a corrugated odor adsorption composite sheet clamped in the porous adsorption net layer, and the porous adsorption net layer is provided with a porous adsorption network formed by mixing super absorbent resin particles and porous adsorption fibers; the leakproof breathable layer is formed by compounding a microporous breathable film and a hydrophobic non-woven fabric, and the edge of the leakproof breathable layer is provided with a protective enclosure assembly with an elastic piece. The problems of poor flow guide efficiency, peculiar smell control limitation and ventilation in the prior art can be solved.

1. A single HTS crystal block is created by: adding HTS constituent materials into a mold to create a material layer, where the layer includes a material plane; disposing fibers that extend approximately from one edge to another edge of the mold on the material plane to create a fiber layer; adding other HTS constituent materials into the mold on top of the fiber layer to create an other material layer; compressing the material layer, the fiber layer, and the other layer in the mold to create a compressed reinforced HTS material block; removing the compressed reinforced HTS material block from the mold; heating the compressed reinforced HTS material block with the material block flat surface being in contact with a flat surface of a single crystal seed plate; and cooling the HTS material block to create the single HTS crystal block.