Fabrication of 3D printing extrusion-based Nylon 12/Bi2O3 composite filaments for thermal interface device application

Das, Jyoti Prakash; Divakaran, Nidhin; Y, Alex; Manoj, T P; Mohanty, Smita

doi:10.1016/j.jmapro.2022.11.061

Cited by 17 publications

(5 citation statements)

References 36 publications

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“…Nylon 12 is known for its durability and strength, making it an ideal material for a range of printing applications. [ 63–65 ] Initially, to determine the parameters of the parent material, we printed multiple dogbones from Nylon 12 to establish the stress–strain curve. The material parameters were determined through tensile testing, which resulted in Young's modulus of 1 GPa, a yield stress of 27.3 MPa, and a fracture limit strain of 0.32.…”

Section: Methodsmentioning

confidence: 99%

Exploring Tunable Torsional Mechanical Properties of 3D‐Printed Tubular Metamaterials

Zhang,

Liu,

Usta

et al. 2024

Adv Eng Mater

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Additive manufacturing has proven to be a reliable and quick method for creating devices and tools, particularly during disruptions to supply chains. One example is 3D printed nasal swabs with tubular structures that require robust mechanical strength while maintaining adequate flexibility. However, there is a lack of detailed understanding on the mechanical response of tubular structures under torsion loading. The goal of this work is to understand the torsional behavior of a new group of 3D printed tubular metamaterials. We used the idea of mechanical metamaterials and started with a simple rectangular lattice. Two main design methods were used: reinforced lattices and compliant lattices. First, we added diagonal reinforced beams to enhance the torsional rigidity, inspired by the lattice structure of sea sponges. Furthermore, we added pre‐buckling to the straight beam, creating a flexible structure that increases the maximum torsional resistance. Our experiments demonstrated the sponge‐inspired design exhibits enhanced stiffness approximately 21 times that of baseline tubular designs. Moreover, the strength and toughness of the sponge‐inspired design are approximately 2.5 and 3 times higher, respectively. By curving the straight beam, we created a set of compliant tubulars that improve flexibility. The torsional angle is increased by at least 2.7 times, while the torsional toughness can reach up to 17 times. Numerical simulations have demonstrated that introducing triangulation into the diagonal reinforced lattice can enhance its stiffness and stability. This is achieved by effectively distributing stress, thereby contributing to structural rigidity. By curving a straight beam and constructing a compliant lattice, stresses are more evenly distributed over a larger area, allowing for greater deformation of the beam without causing failure. Using these two design strategies helps in creating tubular metamaterials with varied applications. Industries requiring high torsional resistance, such as aerospace parts and the automotive industry, can particularly benefit from these materials. They also offer advantages for sectors that need enhanced flexibility, like wearable electronics and soft robotics.This article is protected by copyright. All rights reserved.

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Section: Methodsmentioning

confidence: 99%

Exploring Tunable Torsional Mechanical Properties of 3D‐Printed Tubular Metamaterials

Zhang,

Liu,

Usta

et al. 2024

Adv Eng Mater

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“…Nylon expands when exposed to water because of its hygroscopic nature, and it can be dissolved by acetic acid and formic acid. There are food-safe grades of nylon available as well [ 44 , 45 ].…”

Section: Fdm Filamentsmentioning

confidence: 99%

Various FDM Mechanisms Used in the Fabrication of Continuous-Fiber Reinforced Composites: A Review

Karimi,

Rahmatabadi,

Baghani

2024

Polymers

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Fused Deposition Modeling (FDM) is an additive manufacturing technology that has emerged as a promising technique for fabricating 3D printed polymers. It has gained attention recently due to its ease of use, efficiency, low cost, and safety. However, 3D-printed FDM components lack sufficient strength compared to those made using conventional manufacturing methods. This low strength can be mainly attributed to high porosity and low sinterability of layers and then to the characteristics of the polymer used in the FDM process or the FDM process itself. Regarding polymer characteristics, there are two main types of reinforcing fibers: discontinuous (short) and continuous. Continuous-fiber reinforced composites are becoming popular in various industries due to their excellent mechanical properties. Since continuous reinforcing fibers have a more positive effect on increasing the strength of printed parts, this article focuses primarily on continuous long fibers. In addition to polymer characteristics, different mechanisms have been developed and introduced to address the issue of insufficient strength in 3D-printed FDM parts. This article comprehensively explains two main FDM mechanisms: in-situ fusion and ex-situ prepreg. It also provides relevant examples of these mechanisms using different reinforcing elements. Additionally, some other less frequently utilized mechanisms are discussed. Each mechanism has its own advantages and disadvantages, indicating that further development and modification are needed to increase the strength of 3D-printed FDM parts to be comparable to those produced using traditional methods.

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“…Nylon 12 has been created for several different 3D printing processes: material extrusion, SLS, and Multi Jet Fusion. For instance, the material properties, such as strength, toughness, and fatigue properties, and chemical resistance of Nylon 12 make it a perfect fit for applications involving anatomical models, jewelry, architectural maquettes, packaging, machine parts, eyewear, snap-fit closures, tools with press-fit inserts, and vibration-resistant parts ( Das et al, 2023 ; Shakiba et al, 2021 ; Stoffers et al, 2003 ).…”

Section: Develop Microbial Cell Factories To Synthesize Polymers From...mentioning

confidence: 99%

Repurposing of waste PET by microbial biotransformation to functionalized materials for additive manufacturing

Kolitha,

Jayasekara,

Tannenbaum

et al. 2023

Journal of Industrial Microbiology and Biotechnology

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Plastic waste is an outstanding environmental thread. Poly (ethylene terephthalate) (PET) is one of the most abundantly produced single-use plastics worldwide, while its recycling rates are low. In parallel, additive manufacturing is a rapidly evolving technology with wide-ranging applications. Thus, there is a need for a broad spectrum of polymers to meet the demands of this growing industry and address post-use waste materials. This perspective article highlights the potential of designing microbial cell factories to upcycle PET into functionalized chemical building blocks for additive manufacturing. We present the leveraging of PET hydrolyzing enzymes and rewiring the bacterial C2 and aromatic catabolic pathways to obtain high-value chemicals and polymers. Since PET mechanical recycling back to original materials is cost-prohibitive, the biochemical technology is a viable alternative to upcycle PET into novel 3D printing materials, such as replacements for acrylonitrile butadiene styrene (ABS). The presented hybrid chemo-bio approaches potentially enable the manufacturing of environmentally friendly degradable or higher-value high-performance polymers and composites and their reuse for a circular economy.

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Fabrication of 3D printing extrusion-based Nylon 12/Bi2O3 composite filaments for thermal interface device application

Cited by 17 publications

References 36 publications

Exploring Tunable Torsional Mechanical Properties of 3D‐Printed Tubular Metamaterials

Exploring Tunable Torsional Mechanical Properties of 3D‐Printed Tubular Metamaterials

Various FDM Mechanisms Used in the Fabrication of Continuous-Fiber Reinforced Composites: A Review

Repurposing of waste PET by microbial biotransformation to functionalized materials for additive manufacturing

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