The Boeing Company

Hrl Laboratories, LLC

Theboeing Company

Thomas I Boundy

Andrew Paul Nowak

Carissa Ann Pajel

Alain A Adjorlolo

Sophia Shu Yang

April Rose Rodriguez

Alan Jon Jacobsen

Zak C Eckel

Eric C Clough

Darrin Michael Hansen

Eliana V Ghantous

Tao Xie

Geoffrey P McKnight

Jacob Michael Hundley

A composition for forming a microlattice structure includes a photopolymerizable compound and a flame retardant material. A microlattice structure includes a plurality of struts interconnected at a plurality of nodes, the struts including: a copolymer including a reaction product of a photopolymerizable compound and a flame retardant material. A microlattice structure includes a plurality of struts interconnected at a plurality of nodes, the struts including: a polymer including a reaction product of a photopolymerizable compound; and a flame retardant material.

Microlattice structures including flame retardant materials and compositions and methods for forming the same

In some variations, the invention provides a curable adhesive formulation comprising a curable liquid precursor capable of frontal polymerization, wherein the liquid precursor comprises a monomer and a polymerization catalyst, and frontal-polymerization-triggering susceptors in contact with, or contained within, the liquid precursor. The susceptors may include conducting and/or magnetic solid particles capable of induction heating in the presence of a remotely applied electromagnetic field. Other variations provide a polymer-curing system comprising a curable liquid precursor, frontal-polymerization-triggering susceptors, and an apparatus configured to remotely produce an alternating electromagnetic field in line-of-sight with the susceptors (but not necessarily in line-of-sight with the liquid precursor), thereby generating induction heating to initiate the frontal polymerization. The susceptors may be about 0.1 wt % to about 50 wt % of the curable formulation. Other variations provide a method of curing an adhesive joint through an opaque barrier.

Formulations, methods, and apparatus for remote triggering of frontally cured polymers

A low viscosity polysulfide sealant composition. The composition comprises a curable polysulfide polymer; a crosslinking agent; and a plurality of core-shell particles. The core-shell particles comprise: a core comprising a ferromagnetic material; and a shell comprising silica treated with an organic sulfur containing compound. The shell is capable of bonding with the polysulfide polymer.

Core-shell particles, compositions incorporating the core-shell particles and methods of making the same

Aspects described herein generally describe epoxy resins and methods of epoxy resin formation. In some embodiments, a resin includes the reaction product of one or more polythiols, one or more polyepoxides, one or more fillers and one or more amine catalysts. Polythiols have between two and about ten thiol moieties. Polyepoxides have between two and about ten epoxy moieties. One or more amine catalysts of the formula NRRR, wherein each of R, R, and Ris independently linear or branched C1-20 alkyl or two or more of R, R, and Rcombine to form cycloalkyl. The resin has a compressive strength of at least 14 ksi at 2% offset at 70&#xb0; F. and at least 8 ksi at 2% offset at 190&#xb0; F.

Rapid curing thiol epoxy resin with improved compression strength performance

Methods for making and curing resin-based adhesives are disclosed using encapsulated amine accelerators activated by providing ultrasonic energy.

Rapidly curing adhesives using encapsulated catalyst and focused ultrasound

In some variations, a polymer-based microlattice structure includes a plurality of intersecting micro-truss structural elements each comprising a thermoset first polymer, and a continuous coating layer (with a second polymer) that substantially encapsulates each of the micro-truss structural elements, wherein the second polymer in the continuous coating layer bonds the thermoset first polymer to a substrate. The micro-truss structural elements preferably are architecturally ordered and the coating layer is uniformly distributed within the microlattice structure. The polymer coating layer may be present over the entire microlattice surface area, thereby increasing bond area to improve toughness. The microlattice structure may also have higher glass-transition temperature and chemical resistance, compared to a microlattice structure without the coating layer. Methods of forming a polymer-based microlattice structure are also disclosed.

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Malibu, CA, United States of America

Thomas I Boundy