245 results about "Fibrous layer" patented technology

The invention relates to the technical field of material repair, and discloses a wave-absorbing foaming adhesive film and a preparation method thereof.The wave-absorbing foaming adhesive film comprises a fiber layer, a first surface and a second surface, and the fiber layer is provided with the first surface and the second surface opposite to each other in the first direction; the first adhesive layer is arranged on the first surface; the second adhesive layer is arranged on the second surface; the first backing layer is arranged on the surface, far away from the fiber layer, of the first adhesive layer; the second backing layer is arranged on the surface, far away from the fiber layer, of the second adhesive layer; wherein the wave absorbing intensity of the first adhesive layer and the wave absorbing intensity of the second adhesive layer are gradually changed in the second direction, and the second direction is perpendicular to the first direction. Different areas in the wave-absorbing foaming adhesive film are different in wave-absorbing strength, the wave-absorbing foaming adhesive film has flexible wave-absorbing performance strength distribution, and the wave-absorbing foaming adhesive film has a foaming function and is particularly suitable for repairing functional structures such as wave-absorbing honeycombs and the like.

The utility model discloses a carbon fiber winding composite gas cylinder which comprises an inner container, a carbon fiber layer, a fixed connection layer and a valve body connector. A carbon fiber layer is wound on the outer side of the inner container; a bottle opening formed by connecting the inner container and the carbon fiber layer is covered with a fixed connection layer, and the inner container and the carbon fiber layer are wrapped. A valve body connector is detachably connected to the side, located on the inner container, of the fixed connection layer. The carbon fiber winding composite gas cylinder has the advantages that the inner container and the carbon fiber layer are stably connected through the fixedly-connecting layer, the valve body connector is connected with the inner side of the fixedly-connecting layer, leakage of the carbon fiber winding composite gas cylinder can be effectively prevented, use safety is guaranteed, the outer layer, the end layer and the inner layer are integrally designed, and the carbon fiber winding composite gas cylinder is more stable in use. And the end parts of the outer layer and the inner layer are arc-shaped, so that the attachment is convenient, and the connection strength and stability are improved.

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.

The invention relates to the related technical field of costume fabrics, in particular to a high-antibacterial anti-sunshine costume fabric not prone to fading and a preparation technology, the high-antibacterial anti-sunshine costume fabric comprises a base fiber layer, and an antibacterial finishing layer, an anti-ultraviolet layer and a color fastness enhancing layer are arranged on the base fiber layer. According to the high-antibacterial anti-sunshine clothing fabric not prone to fading and the preparation process, a nano-silver and chitosan composite system is adopted, nano-silver releases silver ions to destroy the physiological structure of bacteria, chitosan inhibits the activity of the bacteria through the amino effect, the nano-silver and the chitosan cooperate with each other, the antibacterial effect of clothing is improved, nano-zinc oxide and titanium dioxide composite sol improve the antibacterial effect of the clothing, and the antibacterial effect of the clothing is improved. Through multiple mechanisms of reflecting, scattering and absorbing ultraviolet rays, broadband protection is formed, the ultraviolet rays can be effectively blocked, the high-grade sunscreen requirement is met, the skin is protected from being damaged by the ultraviolet rays, the sulfonic-group-containing organic dye fixing agent, dye molecules and fibers form chemical bond combination, a stable color fixing network is constructed, and the appearance color and luster are kept lasting.

The invention discloses a rotator cuff patch and a preparation method thereof, and belongs to the technical field of repair materials. According to the preparation method provided by the invention, the bioactive material is combined, the fibers are gradually transited from random arrangement to aligned arrangement through electrostatic spinning, the difference of fiber orientation structures between the random fiber layer and the aligned fiber layer is effectively reduced, and the bonding force between the layers of the patch is greatly enhanced in cooperation with steam welding treatment; the layering phenomenon is effectively avoided; the tensile strength of the rotator cuff patch prepared by the method reaches 18 MPa, and the rotator cuff patch has excellent mechanical properties, can meet the requirements on flexibility and tear resistance during sewing, can provide enough mechanical support for the rotator cuff in the repair process, and adapts to the complex shoulder movement environment.

A method for manufacturing a composite material revolution part for a propulsion assembly includes making a fibrous preform on a mandrel having a profile corresponding to that of the part to be manufactured, and densifying the fibrous preform by a matrix. Making the fibrous preform includes forming a strip-shaped fibrous blank including at least one layer of continuous fibers and at least one layer of discontinuous fibers, the fibrous blank being shaped on the mandrel, the layer of continuous fibers of the fibrous blank extending at least over a complete turn around the mandrel.

To provide a weak current generating human application component capable of conveniently and efficiently transmitting a transdermal drug to a user's skin.SOLUTION: After a user pours an appropriate amount of water on a fiber layer 10 and allows water to permeate, when a thermoplastic resin soft film 40 is stuck to a skin 70, the fiber layer 10 containing a transdermal drug is directly used for the skin 70. Subsequently, the water supplied to the fiber layer 10 flows between a positive electrode 20 and a negative electrode 30 via multiple holes 21 formed in the positive electrode 20 and a polymer membrane 50, and when the water acting as an electrolyte in this way permeates between the positive electrode 20 and the negative electrode 30, a weak current is generated by a potential difference formed when reduction-oxidation reactions occur in the two electrodes 20 and 30 respectively. The generated weak current ionizes the transdermal drug, and then transmits the ionized transdermal drug to the inside of the skin 70 of the user.SELECTED DRAWING: Figure 1

The invention relates to the technical field of textiles, in particular to a wind-resistant and warm-keeping functional fabric and a preparation method thereof. The invention provides a wind-resistant and warm-keeping functional fabric. The wind-resistant and warm-keeping functional fabric sequentially comprises a heating layer, a heat preservation layer and a wind-resistant layer from inside to outside, wherein the heating layer, the heat preservation layer and the wind-resistant layer are tightly attached. Wherein the heating layer is a silk layer with a heating function and contains far infrared functional fibers, the heat preservation layer is a fiber layer with a heat insulation function and contains modified aerogel fibers, the modified aerogel fibers are aerogel fibers with the surfaces coated with polyvinyl alcohol, and the windproof layer is a composite polyester fiber layer and contains volcanic rock fibers. The wind-resistant and warm-keeping functional fabric provided by the invention has excellent warm-keeping effect and wind-proof effect, the warm-keeping rate can reach 70% or above, and the air permeability is between 10 mm / s and 15 mm / s, so that the fabric has proper wind-proof effect and moderate air permeability, and good comfort of a human body is ensured.

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.

The utility model relates to a bra cup which comprises a cotton cup body, the cotton cup body comprises a sponge middle layer, an inner layer and an outer layer, the sponge middle layer is provided with a plurality of air holes, and the inner layer and the outer layer are subjected to sanding treatment; a fiber layer is arranged on the side, away from the sponge middle layer, of the inner layer, hook faces are sewn on the sides, close to the inner layer, of the fiber layer, loop faces used in cooperation with the hook faces are sewn on the sides, close to the fiber layer, of the inner layer, and the loop faces are bonded with the corresponding hook faces. The surfaces of the inner layer and the outer layer are sanded, so that the contact surfaces of the inner layer and the outer layer and the skin of a human body are softer, finer and more skin-friendly than those of the traditional cloth, and the fiber layer can be fixed on the inner wall of the inner layer through the matching use of the hair surface and the hook surface, so that the capacity in the cotton cup body can be changed greatly; the independent fiber layer is more convenient to clean; and a plurality of air holes are formed in the sponge middle layer, so that sweat and hot air can be discharged in time through the air holes when a woman exercises.

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.

A surgical instrument wrap having at least one or a plurality of fibrous layers that cooperate with at least one agent or dye layer that is generally not visible until the at least one or plurality of fibrous layers is damaged or disrupted. The at least one diffusible agent or dye layer diffuses or wicks into the disrupted or damaged area. A fluorescent dye, a reactive dye, a conjugant dye or an absorption wavelength of approximately 200-400 nanometers in one embodiment and an emission wavelength in the visible spectrum so that when the surgical wrap is damage or disrupted and then exposed to, for example, a fluorescent or ultraviolet light source, the agent or dye fluoresces to provide an indication to the user that damage to the wrap has occurred. The user can presume that the items or instruments in the surgical tray may be contaminated.

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 present invention addresses the problem of providing: an absorbent body which is thin and which has excellent absorption characteristics due to high effective utilization efficiency of an absorbent polymer disposed between non-woven fabrics; and a sanitary material product. An absorbent body and a sanitary material product including the same, the absorbent body including a fibrous layer, a first non-woven fabric, a first water-absorbent polymer group, a second non-woven fabric, a second water-absorbent polymer group, and a third non-woven fabric in this order, and having a thickness of 7.0 mm or less, the fibrous layer, the first non-woven fabric, the first water-absorbing polymer group, the second non-woven fabric, the third non-woven fabric, and the second water-absorbing polymer group have various characteristics.

Provided in the present invention are a shoe composite material laminate having a compressed side polyimide fiber layer and a preparation method therefor. The laminate comprises a plurality of carbon fiber layers and a plurality of polyimide fiber layers, adjacent fiber layers being combined together by means of a resin adhesive, and the fiber layer arranged on a compressed side of the laminate being a polyimide fiber layer. Also provided in the present invention are a sole component comprising the laminate, a shoe product comprising the sole component, and a method for preparing the laminate. By means of controlling the laying sequence, uniformity, and direction of fibers in the laminate, the mechanical properties of the composite material laminate are improved. Thus, a high-strength high-toughness lightweight polyimide fiber / carbon fiber hybrid reinforced resin-based composite material laminate is prepared, thereby improving the overall performance and service life of the shoe laminate.

The invention discloses a periodontal complex stent with a bionic structure and a preparation method. The preparation method comprises the following steps: step 1, preparing a polycaprolactone-polylactic acid nanofiber membrane by an electrostatic spinning method; 2, the polycaprolactone-polylactic acid nanofiber membrane obtained in the step 1 is coated with chitosan layer by layer, the fiber membrane is stacked, and after freeze drying, a polycaprolactone-polylactic acid nanofiber scaffold is obtained; 3, immersing the polycaprolactone-polylactic acid nanofiber scaffold obtained in the step 2 into a collagen solution, and carrying out self-assembly to form a composite scaffold; then immersing into a hydroxyapatite solution, and mineralizing to obtain the required composite scaffold; according to the invention, a directionally arranged PCL-PLA nanofiber scaffold is taken as a basis, the surface layer is coated with porous collagen, and after mineralization, a mineralized structure with gradient decreasing from a collagen layer in an external phase to a middle fiber layer is obtained; the obtained composite scaffold simulates a heterogeneous structure of periodontal membrane-bone interface tissue, and provides possibility for collaborative regeneration of soft and hard tissues of a periodontal complex.

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.

The present invention belongs to the technical field of protective materials, and relates to a high-humidity-resistant filter material and a preparation method thereof. The method includes: the filter material main body is sequentially stacked with a first hydrophilic fiber layer, a second hydrophilic fiber layer, and a core filter layer from outside to inside; the thickness of the second hydrophilic fiber layer increases in a gradient from top to bottom. The beneficial effects are that after water is fully diffused in the first hydrophilic fiber layer, it is transmitted to the second hydrophilic fiber layer. The second hydrophilic fiber layer has a wedge-shaped structure with a small thickness at the upper end and a large thickness at the lower end, ensuring that the absorbed water finally converges to the bottom, so that the resistance of the filter material increases slowly during long-term use. The filter material provided by the present invention can enable water to diffuse in a gradient in a short time, greatly alleviate the problem of rapid increase in the resistance of the filter material in a high-humidity environment, and at the same time protect the static electricity of the core filter layer from being affected by humidity, achieving high efficiency and low resistance within the service life of the filter material.

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.

To provide a laminate comprising a skin layer and a layer containing a fibrous material with controlled thickness.SOLUTION: A fibrous laminate 1 comprising a skin layer 3, a first layer 5 laminated in contact with the skin layer 3 and containing a fibrous first material 51 that includes a flame retardant, and a second layer 6 laminated in contact with the first layer 5 and containing a fibrous second material 61 having a smaller amount of flame retardant than the first material 51, wherein the skin layer 3 and the first layer 5 are thermally fused.SELECTED DRAWING: Figure 2

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.

The present invention relates to the technical field of flakes, and it relates to a method for preparing sandwich flakes. A blank composed of a solid fiber layer, a first hollow fiber layer and a second hollow fiber layer arranged on its upper and lower end surfaces is placed on a reel, and the blank is transmitted to a reel through a transmission roller group. During this period, the blank passes through a drying unit, and a plurality of needle tubes are inserted into the interior of the blank to blow hot air into the interior of the blank until the hot air melts the fibers inside the blank and adheres and fixes them to form. The needle tube of the present invention is inserted into the interior of the formed blank, and the depth of the needle tube outlet in the blank is controlled to achieve heating at different positions, thereby ensuring the stability of the flakes after forming.

The utility model discloses a composite non-woven fabric with high dust holding capacity. The composite non-woven fabric comprises a supporting non-woven fabric layer, an antibacterial non-woven fabric layer, an adsorption non-woven fabric layer and a flame-retardant fiber layer which are compounded through a dotted, linear or netted flame-retardant adhesive, the flame-retardant fiber layer is an aramid 1313 spunlace non-woven fabric, fibers used by the adsorption non-woven fabric layer are three-dimensional crimp hollow polyester fibers, each three-dimensional crimp hollow polyester fiber comprises a fiber body, a polydopamine layer and a ferroferric oxide nano-particle layer, and the fiber body is further provided with a hollow part. When the high-dust-holding-capacity composite non-woven fabric is used as a filtering material, due to the fact that the high-dust-holding-capacity composite non-woven fabric comprises the adsorption non-woven fabric layer made of the three-dimensional curled hollow polyester fibers, the high-dust-holding-capacity composite non-woven fabric is more fluffy and higher in dust holding capacity. And the ferroferric oxide nanoparticles used on the surface have good adsorbability and are more durable due to the electrostatic effect of the ferroferric oxide nanoparticles. And the used antibacterial non-woven fabric layer can improve the antibacterial effect.

The application provides a flexible SERS sensor for sweat marker detection and a preparation method and application thereof.The SERS sensor is a composite structure of a Janus nanofiber membrane and a gold nanoparticle film; the Janus nanofiber membrane is composed of a hydrophilic fiber layer and a hydrophobic fiber layer, and the gold nanoparticle film is closely attached to the surface of the hydrophilic layer of the Janus nanofiber membrane.The SERS sensor has a one-way microfluidic transmission performance, can effectively collect sweat in the hydrophilic layer, and can keep the hydrophobic layer almost dry, thereby enhancing the skin comfort.The preparation method and structure of the SERS sensor are simple, and the SERS sensor has the characteristics of lightness, thinness, softness, stretchability, wearability, high sensitivity, high selectivity, good stability and the like, so that the SERS sensor becomes an excellent SERS sensor material, can measure the pH level and the concentration of lactic acid, uric acid and the like in sweat, and provides real-time data support for health management and disease prevention.

The present invention relates to the field of textile technology, and in particular to a wind-resistant and warm-keeping functional fabric and a preparation method thereof. The present invention provides a wind-resistant and warm-keeping functional fabric, which comprises a heating layer, a thermal insulation layer and a windproof layer that are tightly fitted from the inside to the outside; wherein the heating layer is a silk layer with a heating function and contains far-infrared functional fibers, the thermal insulation layer is a fiber layer with a heat-insulating function and contains modified aerogel fibers, the modified aerogel fibers are aerogel fibers coated with polyvinyl alcohol on the surface, and the windproof layer is a composite polyester fiber layer and contains volcanic rock fibers. The wind-resistant and warm-keeping functional fabric provided by the present invention has excellent warming and windproof effects, with a warmth retention rate of more than 70% and an air permeability between 10 and 15 mm / s, so that the fabric has moderate air permeability while having an appropriate windproof effect, ensuring a good sense of comfort for the human body.

The present invention relates to the technical field of underwater submersibles, and specifically to a lightweight underwater submersible composite material sandwich load-bearing structure shell and an integrated molding process; wherein the lightweight underwater submersible composite material sandwich load-bearing structure shell comprises: a first skin and a pressure-resistant buoyancy layer, and a second skin laid in sequence, the first skin comprising a first surface aging-resistant layer and a first surface short fiber layer, and a first surface structural layer; grooves are provided on the upper and lower surfaces of the pressure-resistant buoyancy layer, and slots are provided along the thickness direction of the pressure-resistant buoyancy layer, and the slots in the grooves are filled with adhesive resin. The lightweight underwater submersible composite material sandwich load-bearing structure shell is light in weight and has good overall structural load-bearing performance; it is integrally and one-time molded using a vacuum-assisted resin transfer molding process, ensuring the reliability of the bonding between the materials in each layer and the uniformity and consistency of the thickness.