Effect of stage-dependent addition of nanoparticles in additive manufacturing

Abstract

Recent advancements in the additive manufacturing (AM) technology have increased its utilization in various engineering sectors for the development of end-use products. However, the limited choice of available materials tends to limit its application domain. Addition of nanoparticles can significantly improve the material properties of the AM parts. Moreover, nanoparticles can be added in different stages of the process which will play an important role in determining the increase in material properties. This aspect of the stage-dependent addition of nanoparticles in AM process has not been fully explored. The present work discusses the effect of adding nanoclay in three stages of AM process namely preprocessing, on-site and post-processing stage. It has been found that the nanoparticles interact in a different way with the polymer and result in different structure, morphology and mesostructure of the nanocomposites. The approach can be utilized for achieving improved material properties of AM-fabricated parts.

Production of complex shape magnets using additive manufacturing: A state-of-the-art analysis

“…In the same context, Francis and Jain 16 demonstrated that the addition of other material particles (with the nano or micro size) to the matrix usually used in additive manufacturing can result in better properties to the process and piece made. They used nanoclay (as the filling particles) and butadiene styrene (ABS) as the polymer matrix and studied the effect of nanoparticles addition in three parts of a FDM process (before printing, during printing, and after printing).…”

Mechanical, thermal, and flammability properties of polyamide-6 reinforced with a combination of carbon nanotubes and titanium dioxide for under-the-hood applications

“…The EWF test sample dimensions were 80 × 23 × 2 mm, as shown in Figure 2. The notches were implanted with a sharp razor blade, which provided double-edged tension samples (DENT) with various ligament lengths (5,7,9,11,13, and 15 mm). At least, five specimens were examined for each ligament length, and the data reduction was accompanied by the ESIS-TC4 group's recommendation.…”

“…The incorporation of nanoparticles would significantly improve polymer strength and stiffness. [5][6][7][8] Nanofillers usually used as PA6 reinforcement in practice include TiO 2 , 9 MWCNTs, 10,11 clay nanocomposite , 11 nano-Al 2 O 3, 12 and graphene 13 because of the unrivaled spatial and bonding configuration of carbon nanotubes, which play a pivotal and efficient role as filler in polymer composites because of their high aspect ratio, outstanding tribological characteristics, mechanical strength, and high thermal conductivity. These reinforced nanomaterial composite materials synergistically integrate the characteristics of both fillers, nanomaterial, and pure polymer.…”

An Overview of Additive Manufacturing of Polymers and Associated Composites

“…Similar results were also reported for nanoclay/ABS and nanoclay/PLA composites made by the FDM process [ 9 , 161 ]. A very recent study with the FDM printing process reported different morphology and mesostructures associated with the addition of nanoparticles at different stages of printing [ 162 ]. The study indicates the mechanical properties of the printed part was improved when nanoclay was mixed with the ABS filament before printing.…”