An in-situ crosslinking binder for binder jet additive manufacturing
Abstract
Additive Manufacturing (AM) of metals is a potentially disruptive technology that could significantly change the industrial supply chain. There are a limited number of AM methods capable of creating metal parts, and one method showing significant potential is Binder Jet AM (Binder Jetting). Binder Jetting utilizes an inkjet print head to deposit a binder fluid onto a powder bed and bind together powder particles into a desired geometry. This study investigates a new binder system consisting of a difunctional monomer, triethylene glycol dimethacrylate (TEG-DMA). TEG-DMA exhibits excellent printability with an Ohnesorge’s number of .258 making the Z number 3.876. During the thermal curing process, the difunctional monomer polymerizes and crosslinks at the onset temperature of 138 °C, becoming a solid dimethacrylate network. When the binder is utilized within the stainless-steel powder bed at 200 °C, it forms a network incorporating the stainless-steel particles, binding the powder into any specified geometry. Crosslinking the monomer within the stainless-steel 420 powder bed imparts a flexural strength of 1.0–3.3 MPa to the green part depending on the volume of monomer in the part. After sintering, the final stainless-steel parts results in a void fraction close to 60 % and carbon content below 0.4 %.
- Authors:
-
[2];
[2];
[3];
[2];
[1]
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Michigan State Univ., East Lansing, MI (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- ExOne Corp., North Huntingdon, PA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1649053
- Alternate Identifier(s):
- OSTI ID: 1632209
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Additive Manufacturing
- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 1; Journal ID: ISSN 2214-8604
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
Citation Formats
Gilmer, Dustin, Han, Lu, Hong, Eunice, Siddel, Derek, Kisliuk, Alexander, Cheng, Shiwang, Brunermer, Dan, Elliott, Amy, and Saito, Tomonori. An in-situ crosslinking binder for binder jet additive manufacturing. United States: N. p., 2020.
Web. doi:10.1016/j.addma.2020.101341.
Gilmer, Dustin, Han, Lu, Hong, Eunice, Siddel, Derek, Kisliuk, Alexander, Cheng, Shiwang, Brunermer, Dan, Elliott, Amy, & Saito, Tomonori. An in-situ crosslinking binder for binder jet additive manufacturing. United States. https://doi.org/10.1016/j.addma.2020.101341
Gilmer, Dustin, Han, Lu, Hong, Eunice, Siddel, Derek, Kisliuk, Alexander, Cheng, Shiwang, Brunermer, Dan, Elliott, Amy, and Saito, Tomonori. Mon .
"An in-situ crosslinking binder for binder jet additive manufacturing". United States. https://doi.org/10.1016/j.addma.2020.101341. https://www.osti.gov/servlets/purl/1649053.
@article{osti_1649053,
title = {An in-situ crosslinking binder for binder jet additive manufacturing},
author = {Gilmer, Dustin and Han, Lu and Hong, Eunice and Siddel, Derek and Kisliuk, Alexander and Cheng, Shiwang and Brunermer, Dan and Elliott, Amy and Saito, Tomonori},
abstractNote = {Additive Manufacturing (AM) of metals is a potentially disruptive technology that could significantly change the industrial supply chain. There are a limited number of AM methods capable of creating metal parts, and one method showing significant potential is Binder Jet AM (Binder Jetting). Binder Jetting utilizes an inkjet print head to deposit a binder fluid onto a powder bed and bind together powder particles into a desired geometry. This study investigates a new binder system consisting of a difunctional monomer, triethylene glycol dimethacrylate (TEG-DMA). TEG-DMA exhibits excellent printability with an Ohnesorge’s number of .258 making the Z number 3.876. During the thermal curing process, the difunctional monomer polymerizes and crosslinks at the onset temperature of 138 °C, becoming a solid dimethacrylate network. When the binder is utilized within the stainless-steel powder bed at 200 °C, it forms a network incorporating the stainless-steel particles, binding the powder into any specified geometry. Crosslinking the monomer within the stainless-steel 420 powder bed imparts a flexural strength of 1.0–3.3 MPa to the green part depending on the volume of monomer in the part. After sintering, the final stainless-steel parts results in a void fraction close to 60 % and carbon content below 0.4 %.},
doi = {10.1016/j.addma.2020.101341},
journal = {Additive Manufacturing},
number = 1,
volume = 35,
place = {United States},
year = {Mon May 25 00:00:00 EDT 2020},
month = {Mon May 25 00:00:00 EDT 2020}
}
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