Fabrication of nanocomposite powders with a core-shell structure
Chen, B; Yazdani, B; Benedetti, L; et al.Chang, H; Zhu, Y; Ghita, OR
Date: 29 November 2018
Journal
Composites Science and Technology
Publisher
Elsevier
Publisher DOI
Abstract
This study presents a new process for producing nanocomposite powders for use in various manufacturing
processes such as laser sintering or dry powder impregnation techniques for thermoplastic composites manufacture.
Polyetherimide (PEI) was used as a polymeric coating/shell to encapsulate nanoparticles on the surface
of poly ether ...
This study presents a new process for producing nanocomposite powders for use in various manufacturing
processes such as laser sintering or dry powder impregnation techniques for thermoplastic composites manufacture.
Polyetherimide (PEI) was used as a polymeric coating/shell to encapsulate nanoparticles on the surface
of poly ether ether ketone (PEEK) particles, which were used as a core matrix. Nanoparticles with different
morphologies, known to enhance thermal and electrical performance of polymers: 2D graphene nanoplatelets
(GNPs) and inorganic fullerene-like tungsten disulfide (IF-WS2) in different concentrations (0.1, 1, and 5 wt%)
were incorporated in the shell structures. The coated powders had approximately the same particle size distribution
as the uncoated, plain powders, which is an indication that the shell was in nm size and the coating
process did not affect the overall size of the particles. Furthermore, the core-shell particles exhibit a smoother
surface and an improved flowability after coating. The Transmission Electron Microscopy (TEM) images of the
nanocomposite particles cross-section area confirmed the formation of core-shell structure, and the presence of
the nanoparticles embedded into the shell layer. The scanning electron microscopy (SEM) images showed a
homogeneous distribution of nanoparticles within the coating layer at lower nanoparticle concentrations (0.1
and 1 wt%)
Engineering
Faculty of Environment, Science and Economy
Item views 0
Full item downloads 0
Except where otherwise noted, this item's licence is described as © 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license