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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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Almeida, Olivier De
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2022Determination of a degradation-induced limit for the consolidation of CF/PEEK composites using a thermo-kinetic viscosity modelcitations
- 2021Effect of PEEK degradation on commingled fabrics consolidation
- 2021Effect of melt spinning on the integrity of poly(ether ether ketone) for commingled yarn based composite preformscitations
- 2021Effect of poly(ether ether ketone) degradation on commingled fabrics consolidationcitations
- 2020Characterisation and modelling of the temperature and rate dependent shear behaviour of a non-consolidated powder impregnated fabric
- 2019Experimental characterization and modeling of the temperature and rate-dependent shear behaviour of powder-impregnated glass fiber/PA66 woven semipregscitations
- 2019Modelling strategy of IR lamps with integrated reflector used in the manufacturing processof thermoplastic composite tapes
- 2019Pixel Coloring modelling of PEKK crystallization
- 2019Modeling of IR lamps with coated reflector used in the slurry powder impregnation process of composite tapescitations
- 2018The role of microcrystalline structure on optical scattering characteristics of semi-crystalline thermoplastics and the accuracy of numerical input for IR-heating modelingcitations
- 2017Experimental study of polymerization and crystallization kinetics of polyamide 6 obtained by anionic ring opening polymerization of ε-caprolactamcitations
- 2017Towards a coupled heating-forming simulation of the thermoforming of thermoplastic compositescitations
- 2017Long term ageing of polyamide 6 and polyamide 6 reinforced with 30% of glass fibers: physicochemical, mechanical and morphological characterizationcitations
- 2017A non-invasive experimental approach for surface temperature measurements on semi-crystalline thermoplasticscitations
- 2016Assessment of induction heated mould technologies for high-temperature thermoplastic composite manufacturing
- 2016Experimental analysis on the coupled effect between thermo-optical properties and microstructure of semi-crystalline thermoplasticscitations
- 2016Coupled heating-forming simulation of the thermoforming of thermoplastic composites
- 2016Identification of the temperature dependent relation between thermo-optical properties and morphology of semi-crystalline thermoplastics for thermoforming process
- 2010Melt state behaviour of PEEK and processing window interpretation for fast compression moulding process
- 2010Heterogeneous tensile behavior of impact-modified polypropylene plates processed by injection moulding
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document
Experimental analysis on the coupled effect between thermo-optical properties and microstructure of semi-crystalline thermoplastics
Abstract
Radiation heat transfer is the most common method used in thermoforming processes of thermoplastic polymers due to their poor thermal conductivity. Considering the fact that the thermo-optical characteristics of polymers play a major role in the efficiency of radiative heat transfer in bulk polymers, microstructure of semi-crystalline thermoplastics is one of the key factors to understand this heat transfer phenomenon in depth. In this study, a relation between the microcrystalline structure of polyolefin (PO) and its effect on the thermo-optical properties was experimentally analyzed. Information on the microcrystalline structure of the samples was obtained by determining the degree of crystallinity (X-c) thanks to Differential Scanning Calorimetry (DSC). Using Fourier Transform Infrared (FTIR) spectroscopy and integrating sphere, optical characteristics of the PO samples were analyzed considering two spectrums that are in near-infrared (NIR) and middle-infrared (MIR) spectral regions respectively. The analyses showed that the degree of crystallinity has a great effect on the thermo-optical characteristics of the PO - particularly considering transmission - in NIR range. Such a coupled effect can be functionalized and adopted to develop an advanced radiative heat transfer model that may be used for addressing various problems on infrared (IR) heating of heterogeneous materials, particularly semi-crystalline thermoplastics. In the last part of the paper, a theoretical approach for consideration of the heterogeneity of semi-crystalline thermoplastics in a radiative heat transfer model was highlighted.