摘要:
Disclosed are a composite layer, a composite layer lamination and a method of manufacturing a composite layer. The composite layer includes: a resin core formed in a plate-shape and comprising with a plurality of guide protrusions protruding along an edge of the resin core as being spaced apart at a predetermined distance from each other and a plurality of guide notches between the plurality of guide protrusions; and a reinforcing fiber wound around the resin core via the plurality of guide notches functioning as a guide for the reinforcing fiber.
摘要:
A method of three-dimensionally shaping articles, such as articles that are difficult to transport, includes the following successive steps: placing at least one flexible cord (1) on a former (10), the cord (1) incorporating a heating electrical resistance surrounded by at least a first set of yarns of thermoplastic polymer material; connecting the flexible cord (1) to an electrical power supply for a given duration to cause the thermoplastic polymer of at least the first set of yarns surrounding the heating resistance to soften, the cord then taking on the shape imposed by the former (10); cooling the cord; and optionally removing the former (10) in order to obtain the three-dimensional object.
摘要:
The invention is related in general to equipment and methods for preparing curved fibers in a batch or continuous process. Fiber strands comprising a thermoplastic material are placed on a cylindrical surface and heated such that they soften and become malleable. The fiber strands assume the curvature of the cylindrical surface and, upon cooling below their softening temperature, retain the curvature. The curved-fiber strands are then cut to a desired length.
摘要:
Equipment and methods for preparing curved fibers in a batch or continuous process. Fiber strands comprising a thermoplastic material are placed on a cylindrical surface and heated such that they soften and become malleable. The fiber strands assume the curvature of the cylindrical surface and, upon cooling below their softening temperature, retain the curvature. The curved-fiber strands are then cut to a desired length.
摘要:
In the embodiment described in the specification, a high temperature wet filament winding arrangement has a wet bath containing a resin at a temperature above 500° F. and filaments drawn from a spool rack are passed through the wet bath and then through a heated comb which maintains the temperature of the filaments above 500° F., after which the filaments are passed through a heated passage controlled to maintain the temperature above 500° F. A winding eye, also heated to maintain the filament temperature above 500° F., directs the heated fibers onto a mandrel where they are wound in uniform layers into the form of a final product. A mandrel heater heats the mandrel to which the fibers are being applied so as to maintain a uniform temperature above 500° F.
摘要:
A tubular structure comprising reinforcing fibers impregnated with a thermosetting polymer and a sheet of matrix material filled with an additive suitable for improving tribological and heat conductivity characteristics of the tubular structure. The reinforcing fibers alternate with the matrix material. The tubular structure is formed by winding the reinforcing fiber fabric and the matrix sheet material, wherein the fabric and the matrix sheet material have first and second ends and the first ends are located in the interior of the winding and the second ends are radially outwardly displaced from the first ends.
摘要:
A braided fiber reinforced thermoplastic member is formed by a device, which comprises a braiding device for weaving thermoplastic coated fibers with second fibers onto a weaving mandrel for form a braided preform, and a heating die for melting the thermoplastic of the coated fibers of the braided preform to form a continuous matrix of thermoplastic between the coated fibers and the second fibers. A method for forming a fiber reinforced thermoplastic member comprises coating carbon fibers with a thermoplastic melt, cooling the thermoplastic coated carbon fibers, braiding the coated carbon fibers onto a weaving mandrel with Kevlar.RTM. bias fibers to form a braided preform, and drawing the braided preform through a heating die.
摘要:
A braided in-situ consolidated structure of fiber reinforced thermoplastic resin strands is formed by braiding the strands on a mandrel and then advancing the mandrel and the braided structure as it is formed continuously through a heating zone to heat the resin to a flowable condition then cooling the structure as it leaves the zone. Pressure may be applied or developed against the braided structure during its formation.
摘要:
A fiber/resin composite whose resin phase is formed by at least initial actinic radiation curing of a resin composition comprising an actinic radiation curable first resin component and a second resin component which is non-cured under curing conditions effective for the first resin component. The actinic radiation exposure of the fiber/resin composition effects curing of the first resin component to immobilize the composite and impart structural integrity thereto, whereby the composite may be handled, packaged, or further processed. Filament wound, braided, and pultruded articles are described, together with associated methods for forming such articles by filament winding, braiding and pultrusion. As a specific embodiment, a solid fuel rocket motor is disclosed comprising a solid fuel body in a filament wound fiber-resin composite casing formed by filament winding of the solid fuel body with resin-impregnated filament or rovings thereof.
摘要:
Winding of multiple tows upon a mandrel to form a desired article, such as a tube, is assisted by passing the multiple tows in contact with an exterior surface of a guide which is heated during the winding operation. The guide includes a first guide portion and a also a second guide portion having longitudinal axes which define an angle with respect to each other. The guide is positioned so that either guide portion is capable of receiving the tows so as to contact the exterior surface of the guide before being wound upon the mandrel. Employing the heated guide in accordance with the invention has been found to assist in aligning and at least partially consolidating the tows in a side-by-side relationship for delivery to the mandrel.