Multi-layered Thennoplastic Polyurethane Nanocomposites with Spinel Ferrite Nanoparticles and Graphite for Electromagnetic Interference Shielding Application

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Multi-layered Thennoplastic Polyurethane Nanocomposites with Spinel Ferrite Nanoparticles and Graphite for Electromagnetic Interference Shielding Application

Popis výsledku v původním jazyce

We have designed multi-layered nanocomposites with magnetic and conductive fillers which can effectively shield electromagnetic (EM) waves. Thermoplastic polyurethane (TPU) chosen to be the polymer matrix. Cobalt ferrite nanoparticles with substantial purity were prepared using sonochemical approach. Graphite flakes were commercially purchased and was grinded into fine powder for good distribution and uniformity. Individua! layers of TPU containing magnetic spinel ferrite (F)C0Fe2O4 nanoparticles or conducting graphite (G) with thickness around 1 mm was prepared using melt mixing method and followed by compression molding. Tri-layers of samples such as FFF, GGG, FGF and GFG with average thickness of 3 mm were developed by hot-press compression molding. X-ray diffraction (XRD), Fieldemission scanning electron microscopy (FE-SEM), Transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) and Raman spectroscopy analysis of the developed multi-layered materials were performed. The results show the homogeneous distribution of fillers and the fine incorporation of corresponding materials in the TPU matrix. The electromagnetic interference (EMI) total shielding effectiveness (SET) was 3.4 dB, 24.3 dB, 42.6 dB, 54.5 dB for samples FFF, FGF, GGG, GFG, respectively. lt is noticed that the total EMI shielding characteristics of multi-layered structures can be modified with alternation of magnetic or conducting layer.

Název v anglickém jazyce

Multi-layered Thennoplastic Polyurethane Nanocomposites with Spinel Ferrite Nanoparticles and Graphite for Electromagnetic Interference Shielding Application

Popis výsledku anglicky

We have designed multi-layered nanocomposites with magnetic and conductive fillers which can effectively shield electromagnetic (EM) waves. Thermoplastic polyurethane (TPU) chosen to be the polymer matrix. Cobalt ferrite nanoparticles with substantial purity were prepared using sonochemical approach. Graphite flakes were commercially purchased and was grinded into fine powder for good distribution and uniformity. Individua! layers of TPU containing magnetic spinel ferrite (F)C0Fe2O4 nanoparticles or conducting graphite (G) with thickness around 1 mm was prepared using melt mixing method and followed by compression molding. Tri-layers of samples such as FFF, GGG, FGF and GFG with average thickness of 3 mm were developed by hot-press compression molding. X-ray diffraction (XRD), Fieldemission scanning electron microscopy (FE-SEM), Transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) and Raman spectroscopy analysis of the developed multi-layered materials were performed. The results show the homogeneous distribution of fillers and the fine incorporation of corresponding materials in the TPU matrix. The electromagnetic interference (EMI) total shielding effectiveness (SET) was 3.4 dB, 24.3 dB, 42.6 dB, 54.5 dB for samples FFF, FGF, GGG, GFG, respectively. lt is noticed that the total EMI shielding characteristics of multi-layered structures can be modified with alternation of magnetic or conducting layer.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů