Abstract
This paper investigates the formulation, chemo-rheological properties, and extrusion deposition additive manufacturing (AM) of high glass transition temperature epoxies. Currently there are two methods of using thermoset materials in extrusion deposition AM. The first approach uses a reactive material that will fully cross-link during the build process. The second approach, which is explored in this paper, uses a reactive material that requires a thermal curing cycle after deposition is completed. Yield stress fluids for successful deposition were produced by blending various ratios of rheology modifying fillers into latent curing epoxy systems. After analyzing the rheological properties of the various blends via shear, temperature, and cure rate, the preferred formulation was selected. Test specimens for flexural analysis and dynamic mechanical analysis were printed from down selected combinations. This work resulted in the identification of key parameters for printing latent cured epoxy systems that will be scaled for the first large scale 3D printed epoxy for composite tooling applications.
| Original language | English |
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| Title of host publication | SAMPE Conference and Exhibition |
| Editors | Kevin Ahlstrom, Jacob Preston Anderson, Scott Beckwith, Andrew Craig Becnel, Paul Joseph Biermann, Matt Buchholz, Elizabeth Cates, Brian Gardner, Jim Harris, Michael J. Knight, German Reyes-Villanueva, Stephen E. Scarborough, Phil Sears, James Thomas, Erik T. Thostenson |
| Publisher | Soc. for the Advancement of Material and Process Engineering |
| ISBN (Electronic) | 9781934551301 |
| DOIs | |
| State | Published - 2019 |
| Event | SAMPE 2019 Conference and Exhibition - Charlotte, United States Duration: May 20 2019 → May 23 2019 |
Publication series
| Name | International SAMPE Technical Conference |
|---|---|
| Volume | 2019-May |
Conference
| Conference | SAMPE 2019 Conference and Exhibition |
|---|---|
| Country/Territory | United States |
| City | Charlotte |
| Period | 05/20/19 → 05/23/19 |
Funding
Research sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Industrial Technologies Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).