The Boeing Company

Stephen R Heinz

Christopher Harold Childers

Gregg Robert Bogucki

Christopher S Steinman

John Huntley Belk

Michael William Hayes

Daniel Joseph Braley

John Cleveland Waldrop, Iii

Matthew Scott Thompson

Justine M Truscello

Alexander Rubin

Gregory James Schoepen Hickman

Daniel R Ferriell

John C Waldrop Iii

Alexander M Rubin

Sharon Wong

Gregory James Hickman

John C Waldrop

Provided are composite feedstock strips for additive manufacturing and methods of forming such strips. A composite feedstock strip may include continuous unidirectional fibers extending parallel to each other and to the principal axis of the strip. This fiber continuity yields superior mechanical properties, such as the tensile strength along strip's principal axis. Composite feedstock strips may be fabricated by slitting a composite laminate in a direction parallel to the fibers. In some embodiments, the cross-sectional shape of the slit strips may be changed by reattributing material at least on the surface of the strips and/or by coating the slit strips with another material. This cross-sectional shape change may be performed without disturbing the continuous fibers within the strips. The cross-sectional distribution of fibers within the strips may be uneven with higher concentration of fibers near the principal axis of the strips, for example, to assist with additive manufacturing.

Composite feedstock strips for additive manufacturing and methods of forming thereof

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formula (IV): 

Polyarylether ketone imide adhesives

A method for making a conductive pre-impregnated composite sheet includes the steps of joining a nanomaterial composite sheet, a fiber-reinforcing sheet and a resin system to form a combined sheet, heating the combined sheet, compacting the combined sheet, and cooling the combined sheet to form conductive pre-impregnated composite sheet including the fiber-reinforcing sheet, and the nanomaterial composite sheet coupled to the fiber-reinforcing sheet, wherein the fiber-reinforcing sheet and the nanomaterial composite sheet are embedded in the resin system.

Conductive pre-impregnated composite sheet and method for making the same

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formulae (I), (II), or (III): 

Polyarylether ketone imide sulfone adhesives

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O'Fallon, MO, United States of America

Stephen R Heinz