| 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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Carneiro, Vítor Hugo Pimenta
Tourisme Transports Territoires Environnement Conseil
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Topics
Publications (14/14 displayed)
- 2023A comparative thermoacoustic insulation study of silica aerogels reinforced with reclaimed textile fibres: cotton, polyester and woolcitations
- 2022The influence of precipitation hardening on the damping capacity in Al–Si–Mg cast components at different strain amplitudescitations
- 2021Macro-, meso- and microstructural characterization of metallic lattice structures manufactured by additive manufacturing assisted investment castingcitations
- 2021Optimizing high-volume ultrasonic melt degassing using synchronized kinematic translationcitations
- 2021Manufacturing methodology on casting-based aluminium matrix composites: systematic reviewcitations
- 2020Additive manufacturing assisted investment casting: a low-cost method to fabricate periodic metallic cellular latticescitations
- 2019Positive, zero and negative Poisson’s ratio non-stochastic metallic cellular solids: dependence between static and dynamic mechanical propertiescitations
- 2019Thin-rib and high aspect ratio non-stochastic scaffolds by vacuum assisted investment castingcitations
- 2019Ultrasonic assisted turning of Al alloys: influence of material processing to improve surface roughnesscitations
- 2019The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold castingcitations
- 2018Effect of internal structure in the compression behavior of casted Al/LECA composite foams
- 2017Mechanical behavior of honeycomb lattices manufactured by investment casting for scaffolding applicationscitations
- 2016Influence of Copper layer content in the elastic and damping behavior of Glass-fiber/Epoxy-Resin compositescitations
- 2016Effects of different environmental conditions on the mechanical characteristics of a structural epoxycitations
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article
A comparative thermoacoustic insulation study of silica aerogels reinforced with reclaimed textile fibres: cotton, polyester and wool
Abstract
Silica aerogels are highly porous materials with exceptional thermal insulation performance. They become even more attractive if combined thermal and acoustic insulation is achieved. Silica aerogel composites reinforced with fibres are an ingenious way to surpass the fragility stemmed from the aerogel’s intrinsic porosity, and textile fibres are good sound absorption materials. Reclaimed fibres are a relatively low-cost feedstock and were obtained in this work exclusively through mechanical processes from textile wastes, thus promoting the concept of circular economy, namely for cotton, polyester and wool fibres. These reclaimed fibres were used as reinforcement matrices for silica aerogel composites obtained from sol–gel transformation of tetraethyl orthosilicate and isobutyltriethoxysilane/or vinyltrimethoxysilane precursors and dried at ambient pressure after silylation. Silica aerogel composites reinforced with reclaimed cotton fibres had the best sound absorption coefficient (a peak value of 0.89), while the polyester-reinforced composite exhibited the lowest thermal conductivity (k = ~24 mW m−1 K−1, Hot Disk). The better combined results on thermal and acoustic insulation were achieved by the wool-reinforced composites. The thermal conductivity values were less than 27 mW m−1 K−1, and the sound absorption coefficient achieved a peak value of 0.85. Therefore, the aerogel composites developed here can be selected for thermal or/and acoustic barriers by choosing a suitable type of fibre. Their design and preparation protocol followed environmental-friendly and cost-effective approaches. ; Teresa Linhares acknowledges the PhD grant Ref. SFRH/BD/131819/2017, attributed by Fundação para a Ciência e Tecnologia, I.P. (FCT, Portugal), funded by national funds from MCTES (Ministério da Ciência, Tecnologia e Ensino Superior) and, when appropriate, co-funded by the European Commission through the European Social Fund. Consumables for the syntheses and characterizations performed at CIEPQPF and 2C2T research units were ...