The present disclosure describes techniques for fabricating a textile article from a laminate formed by curing a reinforced fiber matrix and a resin substrate. The resin substrate may include iron oxide particles, such as iron oxide, Fe.sub.3O.sub.4, that are capable of absorbing and attenuating RF signals within a desired RF signal range, namely 0 GHz-3 GHz, 3 GHz,8 GHz, and greater than or equal to 10 GHz. The iron oxide particles may include Fe.sub.3O.sub.4Fe, Fe.sub.3O.sub.4Ni, or Fe.sub.3O.sub.4, and/or so forth. Each iron oxide particle is selected based on the RF signal range that the textile article is intended to absorb. In other words, a change in iron oxide particle composition and proportion by volume may impact the RF signals absorbed and attenuated by the textile article.

A fiber-reinforced resin material used for molding a fiber-reinforced resin which includes a matrix resin and reinforcing fiber bundles A including chopped fiber bundles each including 100 or more single fibers, wherein the product of an average porosity within fiber bundles P.sub.fav () and an average fiber bundle thickness t.sub.fav (mm) is 0 mm or more and 0.01 mm or less and a porosity of composite P.sub.c () is 0.02 or more and 0.4 or less, and a method for producing the same. The fiber-reinforced resin material is a molding material excellent in terms of productivity and reduction in LCA, which can give high mechanical properties to a molded article using the molding material and further which is excellent also in flowability during molding.

Provided is a method for manufacturing a formed article that excels in shape retainability and appearance, using a sheet that contains a thermoplastic resin fiber and a continuous reinforcing fiber. The method for manufacturing a formed article comprises irradiating laser light onto a sheet having, arranged therein with a certain directionality, yarns that contain a thermoplastic resin fiber and a continuous reinforcing fiber, so as to allow at least a part of the thermoplastic resin fiber to be impregnated into the continuous reinforcing fiber; the laser light being irradiated so as to satisfy at least one of A or B below, over at least 70% or more of the laser irradiation area; A: irradiated in a direction 5 to 85 away from the direction of arrangement of yarns in the in-plane direction of the sheet; and B: irradiated in a direction 30 to 60 away from the direction perpendicular to the sheet plane.

An apparatus for manufacturing a fiber reinforced resin material, by cutting long fiber bundles into a plurality of pieces having a predetermined length, and impregnating the cut fiber bundles with resin, includes a plurality of cutters each having a predetermined length and configured to cut the long fiber bundles, and a conveyance unit provided below the cutters and configured to continuously convey the fiber bundles cut with the cutters. The cutters are arranged along a conveying direction of the conveyance unit, such that respective longitudinal directions of the cutters form different angles with the conveying direction of the conveyance unit, when viewed from above the cutters.

A process is capable of producing a high-quality fiber-reinforced plastic with good yield in a short molding cycle time despite being atmospheric pressure molding. The process characterized uses local contact heating to give different temperature conditions to produce a fiber-reinforced plastic by atmospheric pressure molding from a fiber-reinforced material which contains a reinforcing fiber impregnated with a thermosetting resin composition.

A stabilized reinforcing textile fabric including at least one uni-directional reinforcing yarn (A) layer and a plurality of stitching yarns. The plurality of stitching yarns are meltable thermoplastic yarns (B) functioning as a stabilizing resin. The at least one uni-directional reinforcing yarn is includes a carbon fiber, a glass fiber, an aramid fiber, and a natural fiber, or a combination thereof. The meltable thermoplastic stitching yarns include polyamides, polyolefins, polyphthalamides, polyphenylene sulfide, polysulfone, polyether sulfone, polyarylene sulfide, fluoropolymer, polyacetal, polycarbonate, polyether ketone, polyether ether ketone, polyimide, polyether imide, polyarylene ether sulfone, styrenic polymer, polyesters or a combination thereof.

A stabilized reinforcing textile fabric including at least one uni-directional reinforcing yarn (A) layer and a plurality of stitching yarns. The plurality of stitching yarns are meltable thermoplastic yarns (B) functioning as a stabilizing resin. The at least one uni-directional reinforcing yarn is includes a carbon fiber, a glass fiber, an aramid fiber, and a natural fiber, or a combination thereof. The meltable thermoplastic stitching yarns include polyamides, polyolefins, polyphthalamides, polyphenylene sulfide, polysulfone, polyether sulfone, polyarylene sulfide, fluoropolymer, polyacetal, polycarbonate, polyether ketone, polyether ether ketone, polyimide, polyether imide, polyarylene ether sulfone, styrenic polymer, polyesters or a combination thereof.

A partially separated fiber bundle includes separation-processed sections, each divided into a plurality of bundles of at least three bundles, and not-separation-processed sections, that are alternately formed along the lengthwise direction of a fiber bundle that comprises a plurality of single fibers. The partially separated fiber bundle is characterized in that, at any width-direction cross-section taken along the lengthwise direction thereof, a rate of single fibers contained in a region at which adjacent divided fiber bundles are joined by a not-separation-processed part is 67% or less relative to the total single fibers in the width-direction cross-section.

A fiber preform is provided for use in a resin transfer mold (RTM) process. By setting an approximate three-dimensional (3D) shape of fiber preform prior to insertion in an RTM mold, the resulting vehicle component quality and throughput are enhanced. The fusion of the stitching in the fiber preform is sufficient to retain the 3D shape of the preform needed for enhanced RTM molding.

This patent describes a new, simple, and low-cost method to produce aromatic thermosetting copolyester (ATSP) based polymer matrix composites. For this method, the ATSP based composites are directly produced from the blended mixtures of the ATSP oligomer powders with the composite fillers through a high temperature and high pressure curing process. In addition, the fully cured ATSP composite laminates can be bonded together to form thicker multi-material composites. The characterization showed that these ATSP based composites are fully condensed, they have excellent tribological performance (low friction and low wear rate), and they have excellent thermal stability, indicating utility in high performance bearing applications, structural materials, and as an ablative composite material.