The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Jan. 25, 2017
Lockheed Martin Corporation, Bethesda, MD (US);
Aaron G. Sell, Salem, NH (US);
Jonathan W. Ward, San Jose, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Polymer composites containing carbon nanotubes often exhibit high glass transition temperatures, which can complicate their use in additive manufacturing processes. Extruded filaments containing carbon nanotubes and residual solvent can have desirably lowered glass transition temperatures. Extruded filaments can contain a polymer as a continuous phase, a nanomaterial such as carbon nanotubes homogeneously mixed throughout the continuous phase, and above 0% to about 15% solvent by weight. Methods for making extruded filaments can include producing a solvated composite by dissolving a polymer and a nanomaterial in a solvent, producing a partially desolvated composite by reducing a solvent content of the solvated composite to a range of about 10% to about 30% by weight, forming particles of the partially desolvated composite, supplying the particles to an extruder, and extruding a filament having the polymer as a continuous phase and the nanomaterial homogeneously mixed throughout the continuous phase, which also contains residual solvent.