3317 results about "Fibrous composites" patented technology

A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

An improved composite structural member comprising a complex profile structural member, made of a composite comprising a polypropylene polymer and a wood fiber. The material is useful in conventional construction applications. The complex profile, in the form of an extruded thermoplastic composite member can be used in residential and commercial structures as described. Preferably, the structural member is used in the manufacture of the fenestration components such as windows and doors. Such linear members are designed with specifically configured cross-sectional shapes to form structural elements in the fenestration units. Structural elements must possess sufficient strength, thermal stability and weatherability to permit the manufacture of a structurally sound window unit that can be easily installed into a rough opening but can maintain its attractive appearance and structural integrity over the life of the window unit often twenty years or more. The structural member comprises a hollow complex cross-section with at least one structural web or one fastener web formed within the component. The exterior of the extruded component has a visible capstock layer and is shaped and adapted for installation in rough openings. The exterior also contains shape and components capable of supporting the elements of the fenestration unit such as a window, sash or movable door unit. The improved polypropylene structural members have unique advantages and can be assembled in thermoplastic weld processes.

A method and apparatus for additive manufacturing wherein a fiber composite filament having an arbitrarily shaped cross section is softened and then flattened to tape-like form factor for incorporation into a part that is being additively manufactured.

A method of forming preform structures from fiber composite materials in an automated tape placement process, for subsequent resin infusion and heating. Pulsed laser radiation is directed into a nip region of a compaction roller during formation of a composite preform structure to selectively heat discrete areas on a resin veil of thermoplastic to an incoming fiber tape material and a surface of a substrate, to more precisely control tacking of the resin veil of thermoplastic to the fiber tape and the surface of a substrate in predetermined locations.

A decking system, decking components and an installed deck for use on a support structure. The decking system comprises hollow profile planking units having anchor flanges on opposite edges that cooperate with an anchor structure to form a deck or platform. The flanges and the anchor units are shaped and configured to closely interact and form an installed platform structure. The planks comprise an extruded thermoplastic wood fiber composite having an internal structure sufficient to withstand installation, engineering forces placed on the installed platform, weathering and use. The anchor structures have a shape that conforms to the anchor flanges on the decking profiles to hold the deck in place.

In a method for producing fiber-reinforced plastic components made of dry fiber composite preforms by an injection method for injecting matrix material, the arrangement of the fiber composite preform on one surface of the preform resulting in a flow promoting device, on a tool, creates a first space by a gas-permeable and matrix-material-impermeable membrane surrounding the preforms. Formation of a second space arranged between the first space and the surroundings by a foil, which is impermeable to gaseous material and matrix material, is provided, with removal by suction, of air from the second space resulting in matrix material being sucked from a reservoir into the evacuated first space and with the flow promoting device causing distribution of the matrix material above the surface of the preform facing the flow promoting device, thus causing the matrix material to penetrate the preform vertically.

A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

The invention relates to a wind turbine blade comprising a number of pre-fabricated strips arranged in a sequence along the outer periphery. The strips consist of a fibrous composite material, preferably carbon fibres, and consist of a wooden material, preferably plywood or wooden fibres held in a cured resin. The advantage is that it is possible to manufacture blades for wind turbines which are very stiff and generally have a high strength, but which nevertheless are easy to manufacture and also is much cheaper to manufacture compared to conventional manufacturing techniques. The invention also relates to methods for manufacturing prefabricated strips and for manufacturing wind turbine blades.

Articles of apparel for providing improved supportive features and slimming effects to the body are provided, the articles of apparel including supportive reinforced fabric placed in specific regions of the apparel. The supportive reinforced fabric may be ‘hidden’ (e.g., by being included in an inner liner of the apparel), or may be included directly in an outer “exterior” layer of the apparel itself. The supportive reinforced fabric includes a reinforced mesh-like fabric which is stretchable and breathable, yet has highly resilient and supportive properties. Exemplary materials from which such reinforced lining may be made include spandex, Lycra and any fiber composites incorporating elasticized and/or resilient properties.

Provided are fibrous composites prepared by methods of the present invention, comprising oxides and biodegradable polymers, in which the fibers are made of aerogel-like oxide materials having nanometer-sized pores. The fibrous composition advantageously has, at least, the following characteristics: (i) a very high nanoporous surface area, which also permits nucleation of crystallites; (ii) mesoporous/macroporous interspacial networks between the fibers, providing high bioactivity and a high transport rate; (iii) macropores for natural one-like tissue growth; (iv) good mechanical properties for handling and for implant support; and (v) biodegradability for implant dissolution and time-variable mechanical properties. Further provided are methods for using the bioactive biodegradable fibrous composites as osteogenic composite materials for tissue engineering, tissue re-growth, bone implants, and bone repair, and/or for the delivery of drugs or therapeutic compounds.

An apparatus for producing a resin coated fiber composite of a rod shape, tubular-shape or plate shape comprises a plurality of first members having an annular shape with a semi-circular ring shaped internal surface, second members having a disc shape with a semicircular ring shaped external surface, first connectors for assembling the first members, second connectors for assembling the second members, an outer die member semi-assembled with the first members and connectors, an inner die member semi-assembled with the second members and connectors, a heater, an inlet nozzle and an outlet nozzle, a zigzag shaped tunnel formed between the inner and outer die members for providing a narrow flow path of the fiber filaments, and resin inlet ports to fill the molten resin in the zigzag shaped tunnel and pressurize the flow path of the fiber filaments. A process for preparing a resin coated fiber composite of a rod-shape, tubular-shape or plate-shape comprises steps of spreading fiber filaments by passing the fiber filaments through a first member having a convex-concave portion to prevent fracture of the fiber filaments, and sequentially tensioning through a series of first and second members all along a narrow flow path to maximize molten resin penetrating surface area, impregnating pressurized molten resin into the fiber filaments continuously by passing the fiber filaments through a series of the first and second members all along the narrow flow path of a zigzag shaped tunnel to maximize molten resin penetrating time, and wherein pressurization of the molten resin maximizes penetration of molten resin into pores of the fiber filaments and minimizes possibility of resin degradation, stranding the resin-coated fiber filaments through a final set of the first members having the convex-concave portion for strengthening the fiber filaments, and integrating and pultruding the resin-coated fiber filaments continuously by passing the fiber filaments all along the narrow flow path of the zigzag shaped tunnel to form a desired diameter through the outlet nozzle.

A carbon fiber composite material including: a thermoplastic resin; carbon nanofibers dispersed in the thermoplastic resin; and dispersing particles which promote dispersion of the carbon nanofibers in the thermoplastic resin.

The present invention relates to a thermoplastic/natural cellulosic fiber composite, and more specifically to a high molecular weight compatibilizer within that composite resulting in both a high flex strength and high modulus and significant reduction in water absorption. The compatibilizer is preferably a terpolymer comprising: a) 0.5-20 percent by weight of monomer units selected from the group consisting of maleic anhydride, substituted maleic anhydride, mono-ester of maleic anhydride, itaconic anhydride, maleic acid, fumaric acid, crotonic acid, acrylic acid and methacrylic acid; b) 0 to 40 percent by weight of monomer units selected from styrene and functionalized styrene; and c) 40 to 98.5 percent by weight of monomer units selected from the group consisting of C_1-8 alkyl acrylates and methacrylates, and vinyl acetate.

A method of producing a carbon fiber composite material including: mixing an elastomer which includes an unsaturated bond or a group having affinity to carbon nanofibers with metal particles; and dispersing the carbon nanofibers into the elastomer including the metal particles by a shear force.

The present invention relates to a filler-fiber composite, a process for its production, the use of such in the manufacture of paper or paperboard products and to paper produced therefrom. More particularly the invention relates to a filler-fiber composite in which the morphology and particle size of the mineral filler are established prior to the development of the bond to the fiber. Even more particularly, the present invention relates to a PCC filler-fiber composite, wherein the desired optical and physical properties of the paper produced therefrom are realized.

The present invention is directed at a hook mechanical fastener/fibrous composite comprising hook elements on hook containing backing elements or a netting embedded in a fibrous web. The hook elements preferably are on backing elements that are connected or integral and can be strands oriented at angles to each other in a net form. The backing elements generally have a first outer face and a second outer face. The backing elements on at least one of the first or second outer faces have a plurality of hook elements. The hook containing backing elements are embedded within a fibrous web, preferably by hydroentangling the fibers around the backing element, preferably without use of auxiliary attachment means such as adhesives or point bonding.

A family of selectively absorbable/biodegradable, fibrous composite constructs includes different combinations of biostable and absorbable/biodegradable yarns assembled as initially interdependent, load-bearing components, transitioning to exhibit independent functional properties during in vivo end-use. The family of constructs consists of two groups, one group is made of fiber-reinforced composites of high compliance, absorbable matrices of segmented polyaxial copolyesters reinforced with multifilament yarn constructs, which are combinations of ultrahigh molecular weight polyethylene fibers and at least one absorbable/biodegradable fiber selected from silk fibers and multifilament yarns made from linear segmented, l-lactide copolyesters and poly (3-hydroxyalkanoates, are useful in orthopedic, maxillofacial, urological, vascular, hernial repair and tissue engineering applications. The second group is made of coated and uncoated, warp-knitted mesh constructs for use in hernial, vascular, and urological tissue repair and tissue engineering.

The invention relates to a natural fiber composite material and a preparation method of the composite material. The composite material comprises the following components in parts by weight: 100 parts of thermoplastic resin, 5-50 parts of natural fiber, 0-20 parts of impact modifier, 0-30 parts of inorganic filler, 0.1-5 parts of anti-aging agent, and 0-10 parts of processing aid. The preparation method of the composite material comprises the steps of adding the natural fiber into an aqueous solution of a saline coupling agent to soak, then drying the natural fiber, mixing the natural fiber with the other processing aids, feeding the mixed material into a double-screw extruder to subject to the melting extrusion, and granulating to obtain the composite material. Compared with the prior art, the preparation method is simple in process and environment-friendly. More importantly, the problems that the composite material, into which a large amount of natural fiber is added, is poor in material mobility, low in intensity of parts, and poor in appearance quality, are solved. The current situation that the natural fiber composite material cannot adapt to the injection moldings of complex structures is changed.