Loughborough University
Browse
polymers-15-03482-v2.pdf (3.94 MB)

3D printing soft magnet: binder study for vat photopolymerization of ferrosilicon magnetic composites

Download (3.94 MB)
journal contribution
posted on 2023-08-23, 10:46 authored by Leah OkoruwaLeah Okoruwa, Farzaneh Sameni, Pavel BorisovPavel Borisov, Ehsan SabetEhsan Sabet
Liquid Crystal Display (LCD) masking is a 3D printing technique that can produce soft magnetic composite parts to high resolution and complexity for robotics and energy electronics applications. This additive manufacturing technique has the potential to produce larger, lighter-weight, more efficient, and more durable parts for automotive and mechanical applications. This study conducted a binder study to create a low-viscosity and stiff binder capable of loading at least 60 v/v% Fe-6.5 wt%Si particles. Percolation Theory was applied to anticipate the magnetic interaction of suspended particles. A series of binders were formulated, with adjustments to diluent ratios. The behavior of the binders was assessed by studying their rheological properties, conversion rates, and mechanical properties. A post-cure study was conducted across various energy settings using UV, thermal, and a combination of both energy sources to find the combination that provided the best mechanical properties. As a result, 64 v/v% Fe-6.5 wt%Si loading was achieved and cured using UV light of 405 nm wavelength. Vibrating Sample Spectroscopy (VSM) was used to characterize the composite’s magnetic behavior, and a significant increase in saturation magnetization and negligible change in coercivity was observed when the added load exceeded the percolation threshold.

History

School

  • Mechanical, Electrical and Manufacturing Engineering
  • Science

Department

  • Physics

Published in

Polymers

Volume

15

Issue

16

Publisher

MDPI

Version

  • VoR (Version of Record)

Rights holder

© the authors

Publisher statement

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

Acceptance date

2023-08-15

Publication date

2023-08-20

Copyright date

2023

eISSN

2073-4360

Language

  • en

Depositor

Dr Ehsan Sabet. Deposit date: 22 August 2023

Article number

3482

Usage metrics

    Loughborough Publications

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC