| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Saarimaki, Eetta
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Screening of suitable random copolymer polypropylene blends for HVDC cable insulationcitations
- 2023Molecular Layer Deposition of Polyurea on Silica Nanoparticles and Its Application in Dielectric Nanocompositescitations
- 2023Nano-scale nonwoven fabrics by electrospinning of polylactic acid
- 2021Dielectric performance of silica-filled nanocomposites based on miscible (PP/PP-HI) and immiscible (PP/EOC) polymer blendscitations
- 2021Dielectric Performance of Silica-Filled Nanocomposites Based on Miscible (PP/PP-HI) and Immiscible (PP/EOC) Polymer Blendscitations
- 2021Combining good dispersion with tailored charge trapping in nanodielectrics by hybrid functionalization of silicacitations
- 2021Deposition of Ureido and Methacrylate Functionalities onto Silica Nanoparticles and Its Effect on the Properties of Polypropylene-Based Nanodielectricscitations
- 2021PP/PP-HI/silica nanocomposites for HVDC cable insulationcitations
- 2020Silica surface modification with liquid rubbers & functional groups for new polyolefin-based dielectric nano-composites
- 2020Influence of polar and unpolar silica functionalization on the dielectric properties of PP/POE nanocompositescitations
- 2020Feasibility of Mini-Scale Injection Molding for Resource-Efficient Screening of PP-Based Cable Insulation Nanocompositescitations
- 2020Silica Functionalization: How Does it Affect Space Charge Accumulation in Nanodielectrics Under DC?
- 2020From Laboratory to Industrial Scalecitations
- 2019Silica-Polypropylene Nanocomposites for Film Capacitorscitations
- 2018Airborne Dust from Mechanically Recycled Cotton during Ring Spinning
- 2015Novel thermographic inspection method to detect the moisture in early stage of the water ingress and a procedure to remove the moisture from the composite structure
- 2013New high-quality mined nanomaterials mass produced for plastic and wood-plastic nanocomposites
- 2013PVC-wood composite
- 2009Development of thermographic inspection routine exploiting phase transition of water for moisture detection in aircraft structurescitations
- 2006Novel heat durable electromechanical filmcitations
- 2005Novel heat durable electromechanical filmscitations
- 2005Novel heat durable electromechanical film processingcitations
Places of action
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document
Influence of polar and unpolar silica functionalization on the dielectric properties of PP/POE nanocomposites
Abstract
<p>This study focuses on the influence of polar and unpolar surface functionalization of silica on the dielectric performance of PP/POE (polypropylene/poly(ethylene-co-octene)) nanocomposites. The silica fillers were surface-modified with unpoalr trimethylethoxysilane (TMES) or polar 3aminopropyl triethoxysilane (APTES). Fourier-Transform Infrared Spectroscopy and Thermogravimetric analysis were performed and confirmed qualitatively and quantitatively the successful silica-silane modification. Silica/PP/POE nanocomposite films were prepared using a mini-extruder. Scanning Electron Microscope images showed good dispersion of the modified silica in the PP/POE matrix. However, the polar silica cluster size (300 nm) is slightly larger than the one of the unpolar silica (100 nm). Thermally Stimulated Depolarization Current (TSDC) characterization data showed that the polar silica introduced deeper charge traps than the unpolar one, which also showed higher trap density. The apparent conductivity measured during the TSDC poling phase indicated that the polar silica filled nanocomposites featured very fast polarization to reach the saturation state, while the unpolar silica had a rather slow polarization rate. From Pulsed Electroacoustic Analysis it was obvious that the space charge is suppressed by addition of the polar silica, but increased by the presence of the unpolar silica.</p>