Multi-layered Thennoplastic Polyurethane Nanocomposites with Spinel Ferrite Nanoparticles and Graphite for Electromagnetic Interference Shielding Application
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F23%3A63573821" target="_blank" >RIV/70883521:28610/23:63573821 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Multi-layered Thennoplastic Polyurethane Nanocomposites with Spinel Ferrite Nanoparticles and Graphite for Electromagnetic Interference Shielding Application
Original language description
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.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů