Abstract: A honeycomb sandwich panel having an absolute value of thermal expansion coefficient smaller than an absolute value of thermal expansion coefficient obtained by using carbon fiber reinforced plastic (CFRP) is provided. The honeycomb sandwich panel includes: a first skin being a plate material made of a low expansion metal being a metal having an absolute value of thermal expansion coefficient smaller than an absolute value of thermal expansion coefficient of CFRP; a second skin being a plate material made of the low expansion metal and arranged to face the first skin; and a core made of CFRP or the low expansion metal, being bonded to the first skin and the second skin and including a plurality of tubular cells each having a hexagonal cross section, the tubular cells being formed adjacently to each other.

Abstract: The present invention relates to a composite material comprising one or more fibre layers composed of a fibre material and an aromatic polycarbonate-based matrix material. The fibre layer(s) is/are embedded in the matrix material. The present invention further relates to a process for producing these fibre composite materials, to multilayer composite materials comprising several layers of fibre composite material, and to the use of the composite materials for production of components or housing components or housings, and to the components, housing components or housings themselves.

Abstract: To provide a novel material that maintains suppleness which is the advantage of a material using fibers and has a low thermal shrinkage ratio, and a method for producing the material, a partially welded material using the material, a composite material, and a method for producing a molded product.

Abstract: An aramid fabric having excellent adhesion to a polyurethane matrix resin and excellent tensile strength is produced by the method including the steps of: (i) weaving a basket-structured aramid fabric by using aramid yarns as warp and weft yarns; and then (ii) dipping the woven aramid fabric in a sizing agent solution consisting of an aqueous polyurethane resin as a sizing agent and water, followed by squeezing and drying. In the present disclosure, the sizing agent is applied to the woven aramid fabric, thereby effectively preventing the deterioration in weaving efficiency. Further, the aramid fabric is woven in a basket weave, and thus the compactness of the aramid fabric is lowered and the wetting property of the aramid fabric with the polyurethane matrix resin is improved.

Abstract: An object of the present invention is to reduce or eliminate a defect (e.g., a void) by achieving (i) a semipreg and a prepreg each of which allows a reduction in residual volatile component and (ii) methods for producing the semipreg and the prepreg, respectively, and consequently to achieve (iii) a fiber-reinforced composite material which has high heat resistance and superior mechanical strength and a (iv) a method for producing the fiber-reinforced composite material. The present invention attains the above object by providing, for example, a semipreg containing: powders of an imide oligomer; and reinforcement fibers, the imide oligomer being represented by a specific general formula (1).

Abstract: A composite comprises: at least one reinforcing element (10), an adhesive layer (14) made from an adhesive composition and coating the reinforcing element (10), an elastomeric bonding layer (16) made from an elastomeric bonding composition and directly coating the adhesive layer (14), and an elastomeric body made from an elastomeric matrix and embedded in which is the reinforcing element (10) coated with the adhesive layer (14) and with the elastomeric bonding layer (16). The adhesive composition comprises a phenol-aldehyde resin based: on an aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted; and on an aromatic aldehyde bearing an aldehyde function, comprising at least one aromatic ring.

Abstract: The present disclosure generally relates to systems and methods for composites, including short-fiber films and other composites. In certain aspects, composites comprising a plurality of aligned fibers are provided. The fibers may be substantially aligned, and may be present at relatively high densities within the composite. For example, the composite may include substantially aligned carbon fibers embedded within a thermoplastic substrate. The composites may be prepared, in some aspects, by dispersing fibers by neutralizing the electrostatic interactions between the fibers, for example using aqueous liquids containing the fibers that are able to neutralize the electrostatic interactions that typically occur between the fibers. The liquids may be applied to a substrate, and the fibers may be aligned using techniques such as shear flow and/or magnetism. Other aspects are generally directed to methods of using such composites, kits including such composites, or the like.

Abstract: A preform for making a component of a braking system having a fibre-reinforced ceramic composite material, obtained by forming and subsequent pyrolysis of a pre-preg is described. Also described is a component of a braking system made wholly or in part from the preform, and a method for making a preform in a fibre-reinforced ceramic composite material.

Abstract: A dry tape material for fiber placement includes a plurality of reinforcing fiber strands that satisfy (i) to (iii): (i) the reinforcing fiber strand has thicknesses T1 and T3 at both ends in a width direction of a section of the reinforcing fiber strand, and both T1 and T3 are 50 to 200% relative to a thickness T2 at a central portion of the reinforcing fiber strand, (ii) the reinforcing fiber strand has a number of filaments N and a width W that satisfy a relationship of 4.8<N/W<12, and (iii) the reinforcing fiber strand has a form kept by a first resin material having a glass transition temperature Tg or a melting point Tm of 40° C. to 200° C., the first resin material being heat-meltable, wherein the plurality of reinforcing fiber strands are bound and integrated with each other by a second resin material.

Abstract: According to some embodiments, a fireproofing system for protecting an elongate member, comprising at least one inner layer configured to at least partially wrap around itself to form an inner passage, the at least one inner layer configured to generally resist heat, and an outer shell or member defining an interior opening, wherein the first layer is configured to be positioned within the interior opening of the outer shell or outer member, wherein an elongate member is configured to pass through the inner passage.

Abstract: A fiber-reinforced polymer composition that comprises a polymer matrix; a thermally conductive filler distributed within the polymer matrix; and a plurality of long fibers distributed within the polymer matrix is provided. The long fibers comprise an electrically conductive material and have a length of about 7 millimeters or more. Further, the composition exhibits an in-plane thermal conductivity of about 1 W/m-K or more as determined in accordance with ASTM E 1461-13 and an electromagnetic shielding effectiveness of about 20 dB or more as determined at a frequency of 1 GHz in accordance with EM 2107A.

Abstract: The present disclosure is directed to articles that include one or more coated fiber(s) (i.e., fiber(s) with a cured coating disposed thereon), where the coating includes a matrix of crosslinked polymers and optionally a colorant (e.g., pigment particles or dye or both). The cured coating is a product of crosslinking a coating composition including uncrosslinked polymers (e.g., a dispersion of uncrosslinked polymers in a carrier, wherein the uncrosslinked polymers are crosslinked to form the matrix of crosslinked polymers). The present disclosure is also directed to articles including the coated fibers, methods of forming the coated fibers and articles, and methods of making articles including the coated fibers.

Abstract: A sheet formed from carbon fiber reinforced thermoplastic resin with high heat resistance, and a production method of said sheet is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin. The aforementioned at least one of a polycarbonate resin and a polyarylate resin has a constituent unit derived from a dihydric phenol represented by formula (1), and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass. (In formula (1), R1-R4 independently represent a hydrogen, a halogen, a nitro, or a methyl group; X represents a divalent group represented by any of formulas (2) to (4).

Abstract: A barrier system includes a substantially vertical structure with a coating layer disposed on and circumscribing a majority of the substantially vertical structure. The coating layer has a height of at least 0.25 inches, has a dried film thickness of at least 5 mils, and has an average surface roughness (Ra) of less than 10 microns.

Abstract: A plasterboard comprises a gypsum matrix having a polymeric additive distributed therein in an amount of at least 1 wt % relative to the gypsum, the gypsum matrix further having a first group of fibres and a second group of fibres embedded therein, wherein the fibres of the first group of fibres have an average length that is at least three times the average length of the fibres of the second group of fibres.

Abstract: The invention relates to a process for the production of a tape comprising a plurality of sheathed continuous multifilament strands, wherein each of the sheathed continuous multifilament strands comprises a core that extends in the longitudinal direction and a polymer sheath which intimately surrounds said core, wherein each of the cores comprises an impregnated continuous multifilament strand comprising at least one continuous glass multifilament strand, wherein the at least one continuous glass multifilament strand is impregnated with an impregnating agent, wherein the process comprises the steps of: d) providing the plurality of sheathed continuous multifilament strands, e) placing the plurality of sheathed continuous multifilament strands in parallel alignment in the longitudinal direction, f) grouping the plurality of sheathed continuous multifilament strands, wherein steps e) and f) are performed such that the sheathed continuous multifilament strand can be consolidated and g) subsequently consolidating

Abstract: A method of manufacturing a cured composite structure includes placing a radius filler element into a radius cavity extending along a length of a composite base member formed of dry fiber material comprised of reinforcing fibers. The radius filler element is formed of a radius filler material. The method also includes infusing resin into the dry fiber material, and chemically reacting the resin with the radius filler material to create a mixture of resin and radius filler material along side surface interfaces between the radius filler element and the composite base member. The method additionally includes curing or solidifying the resin, and allowing solvent in the resin to evaporate causing hardening of the mixture and bonding of the radius filler element to the composite base member, and resulting in a cured composite structure.

Abstract: The invention provides a layered product in which a glass cloth and a fluororesin-containing sheet are firmly bonded to each other even without providing a layer of polytetrafluoroethylene fine particles and without recrystallizing the fluororesin. The layered product includes, in a layered structure, a fluororesin-containing sheet, a hot-melt resin layer, and a glass cloth. The glass cloth is a fabric including a bulked glass yarn.

Abstract: A multilayered bullet resistant member, including a three-layered structure formed of a metal-ceramic crack arrest reflecting layer, a fiber-elastomer composite energy absorbing layer and a two-dimensional fabric blunt trauma protective layer sequentially overlapped with each other. The integration of performances of all the components guarantees high strength, hardness and good impact toughness of the bullet resistant member.

Abstract: The present invention provides a sheet-like material in which a plant-derived raw material of low environmental impact is used. The invention also provides a sheet-like material that ideally has a uniform and refined nap and a sheet-like material that is strong, has excellent shape stability, is lightweight and is very pliable. This sheet-like material is characterized in being made of nonwoven fabric that is made of polyester microfiber containing a 1,2-propanediol-derived component in an amount prescribed in the present application and a polyurethane elastomer resin containing structural monomers prescribed in the present application.