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Title: Self Assembly-Assisted Additive Manufacturing: Direct Ink Write 3D Printing of Epoxy-Amine Thermosets

The use of self–assembling, pre–polymer materials in 3D printing is rare, due to difficulties of facilitating printing with low molecular weight species and preserving their reactivity and/or functions on the macroscale. Akin to 3D printing of small molecules, examples of extrusion–based printing of pre–polymer thermosets are uncommon, arising from their limited rheological tuneability and slow reactions kinetics. The direct ink write (DIW) 3D printing of a two–part resin, Epon 828 and Jeffamine D230, using a self–assembly approach is reported. Through the addition of self–assembling, ureidopyrimidinone–modified Jeffamine D230 and nanoclay filler, suitable viscoelastic properties are obtained, enabling 3D printing of the epoxy–amine pre–polymer resin. A significant increase in viscosity is observed, with an infinite shear rate viscosity of approximately two orders of magnitude higher than control resins, in addition to, an increase in yield strength and thixotropic behavior. As a result, printing of simple geometries is demonstrated with parts showing excellent interlayer adhesion, unachievable using control resins.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2018-8942J
Journal ID: ISSN 1438-7492; 666998
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Macromolecular Materials and Engineering
Additional Journal Information:
Journal Name: Macromolecular Materials and Engineering; Journal ID: ISSN 1438-7492
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 3D printing; additive manufacturing; self‐assembly; thermosets; ureidopyrimidinone
OSTI Identifier:
1487420

Manning, Kylie B., Wyatt, Nicholas B., Hughes, Lindsey Gloe, Cook, Adam, Giron, Nicholas Henry, Martinez, Estevan Jose, Campbell, Christopher G., and Celina, Mathias C.. Self Assembly-Assisted Additive Manufacturing: Direct Ink Write 3D Printing of Epoxy-Amine Thermosets. United States: N. p., Web. doi:10.1002/mame.201800511.
Manning, Kylie B., Wyatt, Nicholas B., Hughes, Lindsey Gloe, Cook, Adam, Giron, Nicholas Henry, Martinez, Estevan Jose, Campbell, Christopher G., & Celina, Mathias C.. Self Assembly-Assisted Additive Manufacturing: Direct Ink Write 3D Printing of Epoxy-Amine Thermosets. United States. doi:10.1002/mame.201800511.
Manning, Kylie B., Wyatt, Nicholas B., Hughes, Lindsey Gloe, Cook, Adam, Giron, Nicholas Henry, Martinez, Estevan Jose, Campbell, Christopher G., and Celina, Mathias C.. 2018. "Self Assembly-Assisted Additive Manufacturing: Direct Ink Write 3D Printing of Epoxy-Amine Thermosets". United States. doi:10.1002/mame.201800511.
@article{osti_1487420,
title = {Self Assembly-Assisted Additive Manufacturing: Direct Ink Write 3D Printing of Epoxy-Amine Thermosets},
author = {Manning, Kylie B. and Wyatt, Nicholas B. and Hughes, Lindsey Gloe and Cook, Adam and Giron, Nicholas Henry and Martinez, Estevan Jose and Campbell, Christopher G. and Celina, Mathias C.},
abstractNote = {The use of self–assembling, pre–polymer materials in 3D printing is rare, due to difficulties of facilitating printing with low molecular weight species and preserving their reactivity and/or functions on the macroscale. Akin to 3D printing of small molecules, examples of extrusion–based printing of pre–polymer thermosets are uncommon, arising from their limited rheological tuneability and slow reactions kinetics. The direct ink write (DIW) 3D printing of a two–part resin, Epon 828 and Jeffamine D230, using a self–assembly approach is reported. Through the addition of self–assembling, ureidopyrimidinone–modified Jeffamine D230 and nanoclay filler, suitable viscoelastic properties are obtained, enabling 3D printing of the epoxy–amine pre–polymer resin. A significant increase in viscosity is observed, with an infinite shear rate viscosity of approximately two orders of magnitude higher than control resins, in addition to, an increase in yield strength and thixotropic behavior. As a result, printing of simple geometries is demonstrated with parts showing excellent interlayer adhesion, unachievable using control resins.},
doi = {10.1002/mame.201800511},
journal = {Macromolecular Materials and Engineering},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {12}
}

Works referenced in this record:

Direct Ink Writing of Three-Dimensional Ceramic Structures
journal, December 2006
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3D-Printing of Lightweight Cellular Composites
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