The Boeing Company

Toray Industries, Inc.

Hardik Dalal

Adam Franklin Gross

Panagiotis Emanuel George

John J Vajo

April Rose Rodriguez

Ashley M Nelson

Xin Ning Guan

Alain A Adjorlolo

Andrew Paul Nowak

Kurtis Shuldberg Willden

Daniel M Rotter

Elena M Sherman

Jeffrey Lynn Duce

Brad Andrew Coxon

Karl Marius Nelson

Stephen Lee Metschan

James Hillard Davis, Jr

Kelsi Marie Hurley

Berryinne Decker

Travis James Sherwood

Ashley C Tracey

Felix N Nguyen

Brent A Robbins

Breana K Merriweather

Yelina Rosillo

Adam E Sorensen

Kenichi Yoshioka

Hideo Andrew Koyanagi

Dongyeon Lee

James Hillard Davis

Disclosed herein is a composite sandwich panel that includes a first face portion with fully consolidated comingled first fibers and a first thermoplastic matrix. The composite sandwich panel also includes a second face portion with fully consolidated comingled second fibers and a second thermoplastic matrix. Additionally, the composite sandwich panel includes at least one core portion with partially consolidated comingled third fibers and a third thermoplastic matrix. The at least one core portion is interposed between the first and second face portions. The first thermoplastic matrix is melded with the third thermoplastic matrix and the second thermoplastic matrix is melded with the third thermoplastic. A density of the fibers across a thickness of the composite panel is non-uniform.

Composite sandwich panel and associated methods of manufacture

Methods and compositions for depolymerizing the polymer component of fiber reinforced polymers to facilitate the recovery of free fibers.

Carbon fiber recovery compositions and methods

Systems and methods of curing a thermoset composite (TSC) to a target state of cure (SOC) are disclosed herein. The methods include heating the thermoset composite to greater than a threshold temperature. During the heating, the methods further include monitoring an actual temperature of the thermoset composite, determining a maximum temperature achieved by the thermoset composite, and determining an elapsed time that the actual temperature of the thermoset composite is greater than the threshold temperature. The methods further include ceasing the heating based, at least in part, on the maximum temperature of the TSC and the elapsed time. The systems include a heating assembly, a support mandrel, a thermoset composite, a temperature detector, and a controller programmed to perform the methods.

Systems and methods of curing a thermoset composite to a desired state of cure

Methods of co-bonding a first thermoset composite (TSC) and a second TSC to define a cured composite part are disclosed herein. The methods include partially curing the first TSC to a target state of cure (SOC) to define a first partially cured TSC. The partially curing is based, at least in part, on a maximum temperature of the first TSC during the partially curing and on an elapsed time that an actual temperature of the first TSC is greater than a threshold temperature. The methods further include combining the first partially cured TSC with the second TSC to define a partially cured TSC assembly and heating the partially cured TSC assembly to bond the first partially cured TSC to the second TSC, cure the partially cured TSC assembly, and produce a cured composite part.

Methods of co-bonding a first thermoset composite and a second thermoset composite to define a cured composite part

A composition comprising a Lewis base containing depolymerization liquid and methods of using the Lewis base depolymerization liquid to depolymerize the polymer component of fiber reinforced polymers to form free fibers.

Recovery of fibers from fiber reinforced polymers with Lewis bases

Disclosed are methods and apparatus for recovering fibers from fiber reinforced polymers wherein the fiber reinforced polymer is contacted with a Lewis base for a time sufficient to allow at least partial depolymerization of the polymer.

Lewis base-mediated recovery of fibers from fiber reinforced polymers

The present disclosure is directed to a method of making a composite part. The method comprises covering a mold tool for a composite part with a parting film. The method further comprises laying up at least one layer of pre-preg on the parting film covering the mold tool to form a laid-up composite part and removing the laid-up composite part from the parting film. The parting film comprises a polymer sheet having a first major surface and a second major surface; and a first adhesive disposed on the first major surface of the polymer sheet, the first adhesive adhering the polymer sheet to the mold tool.

Method for pre-preg manufacturing

Recovery of fibers reinforced polymers with lewis bases

A composite part comprising an electronic device and method for making the same. A primer is deposited on a surface of the composite part. An electronic device comprising a group of conductive elements is deposited on the primer. An embodiment may include the group of conductive elements within a layer of material co-bonded to the composite part. Power may be supplied to a device connected to the composite part through current flowing through the group of conductive elements.

Integrated wiring system for composite structures

A method of making a composite part comprises covering a mold tool for a composite part with a parting film, the parting film comprising a polymer sheet and a pressure sensitive adhesive. The parting film is positioned so that the polymer sheet is between the mold tool and the pressure sensitive adhesive. At least one layer of pre-preg is layed up on the parting film covering the mold tool to form a layed-up composite part. The pre-preg comprises an adhesive. The layed-up composite part is removed from the parting film.

The present disclosure is directed to a thermoresponsive adhesive material. The material comprises a linear, phase-separated polymer having fluorinated polymer units and hydrophobic polymer units. The fluorinated polymer units and the hydrophobic polymer units are randomly ordered along the polymer. The hydrophobic polymer units include a first hydrophobic polymer unit and a second hydrophobic polymer unit. The first hydrophobic polymer unit is chosen from acrylate units or methacrylate units each substituted with one or more linear alkyl groups, linear alkenyl groups or a combination thereof, where at least one of the linear alkyl groups or alkenyl groups has 16 to 20 carbon atoms. The second hydrophobic polymer unit is chosen from acrylate units or methacrylate units each substituted with one or more linear alkyl groups, linear alkenyl groups or a combination thereof, where at least one of the linear alkyl or alkenyl groups of the second hydrophobic polymer unit has 5 to 14 carbon atoms. A peak adhesive strength of the thermoresponsive adhesive material is modifiable and reversible with a change in temperature. Methods of making thermoresponsive adhesive materials, methods employing thermoresponsive adhesive materials and self-adhesive objects that include thermoresponsive adhesive materials are also disclosed.

Thermoresponsive adhesive material, method of making the material and methods of use

A method for manufacturing a composite part. Layers of composite material are cured to form the composite part. A primer is depicted on a surface of the composite part. A group of conductive elements is deposited on the primer to form an electronic device on the primer.

Growing community of inventors

Seattle, WA, United States of America

Hardik Dalal