A method for manufacturing a fiber reinforced structure includes the following. A mandrel of a first material comprises a hollow interior and an aperture that allows a fluid to enter the interior. A layer of a second material provided on the mandrel includes an uncured resin and fibers. The mandrel and the layer are placed in a mold cavity formed by a mold. A pressurized fluid is introduced into the interior of the mandrel via the aperture to generate a force acting to expand the mandrel outward. The mandrel is heated so that it becomes deformable and expand outward to press the layer against the mold. The layer is heated so that it cures. The mandrel is then heated to a temperature above its melting point of the first material so that it melts, after which it is removed.

The invention concerns a thermoplastic composition having high fluidity in the molten state, comprising at least: (a) one thermoplastic polymer matrix; (b) one oligomer selected from cyclic ester oligomers, ether oligomers and mixtures thereof, said oligomer having a degree of polymerization of between 2 and 25; and (c) one phenolic polymer; said compounds (b) and (c) being present in a weight ratio (c)/(b) varying from 0.25 to 6, and preferably from approximately 0.75 to 2.75.

The invention also concerns a process for producing a composite article from such a composition by impregnating a reinforcement such as a fabric or a preform, the composite article obtained according to this process, and the use of an oligomer (b) in combination with at least one phenolic polymer (c), as a plasticizing additive in a thermoplastic polymer matrix.

The present application provides agents for producing an impact-modified epoxy adhesive encompassing at least two components A and B packaged separately from each other, wherein (a) component A contains at least one compound having two or more isocyanate groups together with one or more further additives, (b) component B contains at least one compound which has at least two reactive groups selected from hydroxyl groups, thiol groups, primary amino groups and secondary amino groups and is simultaneously free from epoxy groups, together with one or more further additives, (c) at least one of components A and/or B contains at least one epoxide prepolymer as an additive, (d) at least one of components A and/or B contains at least one latent hardener for epoxide prepolymers as an additive, and (e) components A and B contain no blowing agent that is capable of being heat activated.

This disclosure relates to an article that includes a nonwoven substrate, a first film supported by the nonwoven substrate, and a second film such that the first film is between the nonwoven substrate and the second film. The first film includes a first polymer and a pore-forming filler. The difference between a surface energy of the first film and a surface energy of the nonwoven substrate is at most about 10 mN/m. The second film includes a second polymer capable of absorbing and desorbing moisture and providing a barrier to aqueous fluids.

A 3D printing process may form a 3D object by alternatingly forming layers from a liquid resin and a solid. For instance, when printing a 3D object, the 3D printer may at least partially cure a layer of liquid resin, and before the curing of the resin is complete, dip the semi-cured resin into a vat containing graphene powder so as to create a super strong 3D object. As another example, each semi-cured resin layer could be pressed into a vat of fiberglass such that the fiberglass is coupled to the semi-cured resin. The resin may then be allowed to finish curing before the next layer of resin is formed. In other embodiments, this process could be used to embed sensors in 3D printed objects.

Disclosed is a method for producing components from fiber-reinforced thermoplastic. The method involves manufacturing a multitude of semifinished products, each of which includes a plurality of impregnated fabric layers that are joined to one another only locally, as well as a frame structure having at least one cutout. The semifinished products are consolidated using a consolidation device, an inlay element being placed in each cutout before the semifinished products are consolidated.

Resin-molded articles, to which such advantages as strength, rigidness and light weight are secured thanks to kneading with fibers, and which has excellent surface characteristics such as smoothness of the surface and beauty in the appearance, and resistance against weather, ultraviolet rays and light are provided.

The present technology provides a carbon fiber reinforced plastic that includes carbon fibers covalently bonded to an energetic polymer and a polymer matrix. Also described is a method for recycling carbon fibers from the carbon fiber reinforced plastic material using microwave energy to separate the carbon fibers from the polymer matrix.

A manufacturing method for a component made from composite material, in particular of a turbomachine, includes the steps of producing a preform with a fibrous reinforcement comprising a first fibrous portion and a second fibrous portion, and injecting a pressurized matrix into an injection chamber of an injection mold, in which the preform is arranged. The method further includes the steps of polymerizing the preform and positioning a flexible pocket that encloses a fluid and that is arranged between the first fibrous portion and the second fibrous portion before the injection step. The fluid is configured to apply an additional pressure to the preform of the fluid during the polymerization step.

A method for manufacturing a reinforcing fiber base material includes a placement step of placing a sheet-shaped reinforcing fiber material piece, in which reinforcing fibers are arranged so as to extend in one direction and bound together with a thermoplastic resin, on a table so that the orientation direction of the reinforcing fibers is at an angle with respect to a longitudinal direction of the reinforcing fiber base material, and a welding step in which, in a state in which a previously placed reinforcing fiber material piece and the reinforcing fiber material piece placed subsequent thereto are abutted against each other in the longitudinal direction, adjoining edges of the two reinforcing fiber material pieces are welded together to form a continuous sheet shape.