3D printing multifunctional fluorinated nanocomposites: tuning electroactivity, rheology and chemical reactivity

Bencomo, José A.; Iacono, Scott T.; McCollum, Jena

doi:10.1039/c8ta00127h

Cited by 66 publications

(48 citation statements)

References 33 publications

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“…Recent advancements in the additive manufacturing (AM) of energetic materials allow for the creation of complex, energetic structural elements [1–4]. The flexibility of additive manufacturing is opening new application spaces that were previously unattainable due to manufacturing limitations [5–7], such as the fabrication and use of components comprised of multifunctional energetic structural materials (MESMs).…”

Section: Introductionmentioning

confidence: 99%

“…While many MESM applications require high‐density reactive materials, such as intermetallic or thermite based energetic material systems, creating complex 3D geometries using AM has not yet been achieved (to the best of the authors’ knowledge) for these material systems [8–10]. However, lower density polymer‐based energetic materials have shown promise in the additive manufacturing space [1–4, 11, 12]. These materials can be used as lightweight MESMs, which can be used in a variety of interesting applications in the aerospace and defense sectors.…”

Section: Introductionmentioning

confidence: 99%

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Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Fleck

Manship

Son

et al. 2021

Propellants Explo Pyrotec

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The constituents of an aluminum/polyvinylidene fluoride multifunctional energetic structural material (MESM) were varied in order to determine the effect of solids loading and particle size on the structural energetic properties of the material. More specifically, seven different material formulations were paired with additive manufacturing to quantify key performance metrics relevant to the MESM use case. Determined via the quasi‐static tensile testing of 3D printed dogbone samples, both the modulus of elasticity and the ultimate strength was found to be heavily dependent on the solids loading; respectively increasing from 71 MPa to 208 MPa and decreasing from 34.5 MPa to 21.6 MPa, when transitioning from a 10 % Al loading to a 50 % Al loading. To characterize the combustion properties, a thermochemical code was used to predict the heat of combustion and the adiabatic flame temperature for the formulations considered, showing a maximum predicted temperature near 20 % Al. Also, burning rate measurements were conducted on the 3D printed formulations in order to quantify their combustion performance. When burning in air, a maximum burning rate was found to occur at the slightly fuel‐rich condition of 30 % Al. Upon completion of the characterization, the trade‐off between mechanical performance and combustion performance was visualized by plotting critical MESM design parameters against one another.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Fleck

Manship

Son

et al. 2021

Propellants Explo Pyrotec

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“…Therefore, it was chosen as the 3D printing material to structure a 3D frog artwork by the FDM method as described in Experimental Section. [ 44 ] The resulting life‐like creature is displayed in Figure 4e,i. It glows a bright green color under 380 nm UV LED chip excitation, as well as the artwork (Figure 4e,ii) made by the templating method.…”

Section: Resultsmentioning

confidence: 99%

Bright Green Emitting CaYAlO₄:Tb³⁺,Ce³⁺ Phosphor: Energy Transfer and 3D‐Printing Artwork

Zhou

Hong

et al. 2020

Advanced Optical Materials

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The environmentally friendly and low‐priced CaYAlO4:Tb3+ nanophosphors are combined with good optically transparent materials for the application in 3D printing. For ultraviolet (UV) light‐emitting diode excitation, CaYAlO4:Tb0.07Cey and CaYAlO4:Ce0.05Tbx nanophosphors are prepared by a sol–gel route and systematically studied for optimal excitation at 380 nm to give strong green emission to which human and aquatic animals eyes are generally sensitive. This is benefited from the dipole and spin allowed transition of Ce3+ and the 92.5% efficient energy transfer from Ce3+ to Tb3+ in this host. Polydimethylsiloxane, with 92% transmittance in the visible spectral region, is a valid choice to make the shaped artwork by a templating method, combined with the nanoparticles to give a uniform distribution, as determined by X‐ray microcomputed tomography. Polylactic acid is also employed to create a frog artwork by the fused deposition modeling method. The final 3D‐printed colorful artwork is displayed herein together with that produced by the templating method under different light source excitation to suggest a novel expression of aesthetic concepts and a potential application in the future marine environment such as a lamp to attract aquatic animals or a buoy to guide ships.

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“…In another study, McCollum et al analyzed the consequences of poly(methyl methacrylate) addition to the Al/ PVDF system [138]. Figure 12 illustrates the workflow starting with mixing of the components for 5 min at 190°C and 75 rpm, followed by extrusion of the filament and 3D printing (Ultimaker 2 printer, 0.4 mm nozzle, 60°C substrate plate temperature, 10 mm s À 1 rate).…”

Section: Fused Deposition Modeling (Fdm)mentioning

confidence: 99%

“…An interesting property of the commercial ABS polymer found by Whitmore et al [140] is its arcing between layers: the vaporized material is easily oxidized in a flow of oxidizer. This phenomenon can [138] with permission from The Royal Society of Chemistry, (b) reprinted from [27] with permission from Elsevier. be used to overcome the ignition shortcomings in traditional hybrid engines.…”

Section: Fused Deposition Modeling (Fdm)mentioning

confidence: 99%

Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications

Muravyev

Моногаров

Schaller

et al. 2019

Propellants Explo Pyrotec

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The modern “energetic‐on‐a‐chip” trend envisages reducing size and cost while increasing safety and maintaining the performance of energetic articles. However, the fabrication of reactive structures at micro‐ and nanoscales remains a challenge due to the spatial limitations of traditional tools and technologies. These mature techniques, such as melt casting or slurry curing, represent the formative approach to design as distinct from the emerging additive manufacturing (3D printing). The present review discusses various methods of additive manufacturing based on their governing principles, robustness, sample throughput, feasible compositions and available geometries. For chemical composition, nanothermites are among the most promising systems due to their high ignition fidelity and energetic performance. Applications of reactive microstructures are highlighted, including initiators, thrusters, gun propellants, caseless ammunition, joining and biocidal agents. A better understanding of the combustion and detonation phenomena at the micro‐ and nanoscale along with the advancement of deposition technologies will bring further developments in this field, particularly for the design of micro/nanoelectromechanical systems (MEMS/NEMS) and propellant grains with improved performance.

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3D printing multifunctional fluorinated nanocomposites: tuning electroactivity, rheology and chemical reactivity

Abstract: Poly(methyl methacrylate) (PMMA) was added to aluminum/poly(vinylidene fluoride) (Al/PVDF) energetic blends to enhance melt flow rate and adhesion in a fused deposition modeling (FDM) manufacturing scenario.

Cited by 66 publications

References 33 publications

Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Bright Green Emitting CaYAlO₄:Tb³⁺,Ce³⁺ Phosphor: Energy Transfer and 3D‐Printing Artwork

Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications

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3D printing multifunctional fluorinated nanocomposites: tuning electroactivity, rheology and chemical reactivity

Abstract: Poly(methyl methacrylate) (PMMA) was added to aluminum/poly(vinylidene fluoride) (Al/PVDF) energetic blends to enhance melt flow rate and adhesion in a fused deposition modeling (FDM) manufacturing scenario.

Cited by 66 publications

References 33 publications

Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Structural Energetic Properties of Al/PVDF Composite Materials Prepared Using Fused Filament Fabrication

Bright Green Emitting CaYAlO4:Tb3+,Ce3+ Phosphor: Energy Transfer and 3D‐Printing Artwork

Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications

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Bright Green Emitting CaYAlO₄:Tb³⁺,Ce³⁺ Phosphor: Energy Transfer and 3D‐Printing Artwork