Fused filament fabrication of polymer composites for extreme environments

Brounstein, Zachary; Talley, Samantha J.; Dumont, Joseph H.; Zhao, Jianchao; Lee, Kwan-Soo; Labouriau, Andrea

doi:10.1557/jmr.2020.118

Cited by 8 publications

(4 citation statements)

References 42 publications

(44 reference statements)

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“…The overall process for fabricating filament feedstocks was similar to the work previously described for acrylonitrile butadiene styrene (ABS) [ 42 ]. PLA pellets were combined with the antimicrobial agents (TiO 2 , ZnO) and PEG to achieve the desired weight ratios.…”

Section: Methodsmentioning

confidence: 99%

Development of Antimicrobial PLA Composites for Fused Filament Fabrication

2021

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In addition to possessing the desirable properties of being a biodegradable and biocompatible polymer fabricated from renewable resources, poly (lactic acid) (PLA) has useful mechanical and thermal attributes that has enabled it to be one of the most widely-used plastics for medicine, manufacturing, and agriculture. Yet, PLA composites have not been heavily explored for use in 3D-printing applications, and the range of feasible materials for the technology is limited, which inhibits its potential growth and industry adoption. In this study, tunable, multifunctional antimicrobial PLA composite filaments for 3D-printing have been fabricated and tested via chemical, thermal, mechanical, and antimicrobial experiments. Thermally stable antimicrobial ceramics, ZnO and TiO2, were used as fillers up to 30 wt%, and poly (ethylene glycol) (PEG) was used as a plasticizer to tune the physical material properties. Results demonstrate that the PLA composite filaments exhibit the thermal phase behaviors and thermal stability suitable for 3D-printing. Additionally, PEG can be used to tune the mechanical properties while not affecting the antimicrobial efficacy that ZnO and TiO2 imbue.

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Section: Methodsmentioning

confidence: 99%

Development of Antimicrobial PLA Composites for Fused Filament Fabrication

2021

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“…Indeed, major progress in vat polymerization [ 1 , 2 ], selective laser melting [ 3 , 4 ], and direct ink writing (DIW) [ 5 , 6 , 7 ] has demonstrated the variety of means in which advanced composites can be used to construct geometries and structures that traditional manufacturing techniques have difficulty fabricating. DIW 3D printing, a technology under the ISO/ASTM 52900:2015 category of material extrusion, includes ink jet printing [ 8 , 9 , 10 ], micropen writing [ 11 , 12 ], fused filament fabrication (FFF) [ 13 , 14 , 15 ], hot-melt extrusion [ 16 , 17 ], and robocasting [ 18 , 19 ] and is especially useful because of the wide array of material selection available and the continued development which increases the capabilities of these techniques. DIW, in particular, is especially suitable for advanced materials capabilities due to its range of ink formulations and versatility in part extrusion and curing.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, more precise radiation shielding materials have been developed such as glasses and amorphous alloys for use in other nuclear technologies such as radiation protection and medicine [36][37][38]. The advancement in this area of materials development has also occurred with 3D printing technology, where filaments for FFF and inks for DIW have been created in contemporary research [14,[39][40][41][42][43][44]. Indeed, the merging of the two fields of nuclear technology and advanced manufacturing proves especially prolific and rewarding due to the unique part fabrication that 3D printing offers, where commercial entities have begun selling radiation shielding material specifically for additive manufacturing technologies.…”

Section: Introductionmentioning

confidence: 99%

Tuning the 3D Printability and Thermomechanical Properties of Radiation Shields

et al. 2021

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Additive manufacturing, with its rapid advances in materials science, allows for researchers and companies to have the ability to create novel formulations and final parts that would have been difficult or near impossible to fabricate with traditional manufacturing methods. One such 3D printing technology, direct ink writing, is especially advantageous in fields requiring customizable parts with high amounts of functional fillers. Nuclear technology is a prime example of a field that necessitates new material design with regard to unique parts that also provide radiation shielding. Indeed, much effort has been focused on developing new rigid radiation shielding components, but DIW remains a less explored technology with a lot of potential for nuclear applications. In this study, DIW formulations that can behave as radiation shields were developed and were printed with varying amounts of porosity to tune the thermomechanical performance.

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“…Material extrusion-based additive manufacturing enables the ability to selectively dispense multiple materials in three-dimensional space with custom chemistries and architectures. , Fused deposition modeling (FDM) has been demonstrated as a viable process to generate multimaterial radiation shields. − The integration of shields produced via FDM, however, requires separate assembly steps as the processing temperatures of extrusion and poor adhesion to microelectronics prevent the direct deposition of shielding onto devices. ,,, Conversely, direct ink writing (DIW) additive manufacturing enables the deposition of composite inks with high volumetric loading of additives. Depending on the binder chemistry, inks can be printed at room temperature and be conformally deposited on a wide range of substrates. , Furthermore, DIW enables architecture modification of filaments into core-shell, graded, and blended additive structures. − FDM printing has also demonstrated the ability to make core-shell architectures, although the requirements for fabrication limit the volumetric loading of inorganic particle additives.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Multimaterial Composites for Radiation Shielding and Thermal Management

Beck

Bickus

Klein

et al. 2023

ACS Appl. Mater. Interfaces

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The harsh radiation environment of space induces the degradation and malfunctioning of electronic systems. Current approaches for protecting these microelectronic devices are generally limited to attenuating a single type of radiation or require only selecting components that have undergone the intensive and expensive process to be radiation-hardened by design. Herein, we describe an alternative fabrication strategy to manufacture multimaterial radiation shielding via direct ink writing of custom tungsten and boron nitride composites. The additively manufactured shields were shown to be capable of attenuating multiple species of radiation by tailoring the composition and architecture of the printed composite materials. The shear-induced alignment during the printing process of the anisotropic boron nitride flakes provided a facile method for introducing favorable thermal management characteristics to the shields. This generalized method offers a promising approach for protecting commercially available microelectronic systems from radiation damage and we anticipate this will vastly enhance the capabilities of future satellites and space systems.

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Fused filament fabrication of polymer composites for extreme environments

Abstract: Abstract

Cited by 8 publications

References 42 publications

Development of Antimicrobial PLA Composites for Fused Filament Fabrication

Development of Antimicrobial PLA Composites for Fused Filament Fabrication

Tuning the 3D Printability and Thermomechanical Properties of Radiation Shields

Additive Manufacturing of Multimaterial Composites for Radiation Shielding and Thermal Management

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