Magnetic properties of nanoparticle-polymer composites prepared using surface modification and cross-linking reaction

Kazuaki Shimba; Kiyotaka Furuta; Nobuyuki Morimoto; Nobuki Tezuka; Satoshi Sugimoto

doi:10.2320/matertrans.MAW201020

Magnetic properties of nanoparticle-polymer composites prepared using surface modification and cross-linking reaction

Kazuaki Shimba, Kiyotaka Furuta, Nobuyuki Morimoto, Nobuki Tezuka, Satoshi Sugimoto

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Polymer composites of magnetic particles are widely used as microwave absorbers. An effective method for obtaining thinner microwave absorbers for device mounting is to increase the volume fraction of magnetic nanoparticles within the composites such that the permeability is enhanced. In this study, composites were prepared using magnetite nanoparticles surface-modified with 4-META (4-methacryloylioxyethyl trimellitate anhydride) and cross-linked with PEG-4SH (pentaerydiritol tetra-polyethylene glycol ether with four thiol-modified terminals). These composites have a higher volume fraction of nanoparticles (up to 62 vol%) and higher permeability than conventional epoxy resin composites. In addition, the prepared composites showed good microwave absorption properties (R.L. < -20dB) with a smaller matching thickness (d = 8.0 mm) than the epoxy resin composites (d = 9.0 mm).

Original language	English
Pages (from-to)	486-490
Number of pages	5
Journal	Materials Transactions
Volume	52
Issue number	3
DOIs	https://doi.org/10.2320/matertrans.MAW201020
Publication status	Published - 2011 Mar

Keywords

Cross-linking
Magnetic nanoparticles
Magnetite
Microwave absorbers
Surface modification

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.MAW201020

Cite this

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title = "Magnetic properties of nanoparticle-polymer composites prepared using surface modification and cross-linking reaction",

abstract = "Polymer composites of magnetic particles are widely used as microwave absorbers. An effective method for obtaining thinner microwave absorbers for device mounting is to increase the volume fraction of magnetic nanoparticles within the composites such that the permeability is enhanced. In this study, composites were prepared using magnetite nanoparticles surface-modified with 4-META (4-methacryloylioxyethyl trimellitate anhydride) and cross-linked with PEG-4SH (pentaerydiritol tetra-polyethylene glycol ether with four thiol-modified terminals). These composites have a higher volume fraction of nanoparticles (up to 62 vol%) and higher permeability than conventional epoxy resin composites. In addition, the prepared composites showed good microwave absorption properties (R.L. < -20dB) with a smaller matching thickness (d = 8.0 mm) than the epoxy resin composites (d = 9.0 mm).",

keywords = "Cross-linking, Magnetic nanoparticles, Magnetite, Microwave absorbers, Surface modification",

author = "Kazuaki Shimba and Kiyotaka Furuta and Nobuyuki Morimoto and Nobuki Tezuka and Satoshi Sugimoto",

year = "2011",

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doi = "10.2320/matertrans.MAW201020",

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pages = "486--490",

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publisher = "Japan Institute of Metals (JIM)",

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T1 - Magnetic properties of nanoparticle-polymer composites prepared using surface modification and cross-linking reaction

AU - Shimba, Kazuaki

AU - Furuta, Kiyotaka

AU - Morimoto, Nobuyuki

AU - Tezuka, Nobuki

AU - Sugimoto, Satoshi

PY - 2011/3

Y1 - 2011/3

N2 - Polymer composites of magnetic particles are widely used as microwave absorbers. An effective method for obtaining thinner microwave absorbers for device mounting is to increase the volume fraction of magnetic nanoparticles within the composites such that the permeability is enhanced. In this study, composites were prepared using magnetite nanoparticles surface-modified with 4-META (4-methacryloylioxyethyl trimellitate anhydride) and cross-linked with PEG-4SH (pentaerydiritol tetra-polyethylene glycol ether with four thiol-modified terminals). These composites have a higher volume fraction of nanoparticles (up to 62 vol%) and higher permeability than conventional epoxy resin composites. In addition, the prepared composites showed good microwave absorption properties (R.L. < -20dB) with a smaller matching thickness (d = 8.0 mm) than the epoxy resin composites (d = 9.0 mm).

AB - Polymer composites of magnetic particles are widely used as microwave absorbers. An effective method for obtaining thinner microwave absorbers for device mounting is to increase the volume fraction of magnetic nanoparticles within the composites such that the permeability is enhanced. In this study, composites were prepared using magnetite nanoparticles surface-modified with 4-META (4-methacryloylioxyethyl trimellitate anhydride) and cross-linked with PEG-4SH (pentaerydiritol tetra-polyethylene glycol ether with four thiol-modified terminals). These composites have a higher volume fraction of nanoparticles (up to 62 vol%) and higher permeability than conventional epoxy resin composites. In addition, the prepared composites showed good microwave absorption properties (R.L. < -20dB) with a smaller matching thickness (d = 8.0 mm) than the epoxy resin composites (d = 9.0 mm).

KW - Cross-linking

KW - Magnetic nanoparticles

KW - Magnetite

KW - Microwave absorbers

KW - Surface modification

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Magnetic properties of nanoparticle-polymer composites prepared using surface modification and cross-linking reaction

Abstract

Keywords

ASJC Scopus subject areas

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