Aerogel Composites Produced from Silica and Recycled Rubber Sols for Thermal Insulation

Hydrophobic rubber-silica aerogel panels (21.5 × 21.5 × 1.6 cm3) were fabricated from silica and rubber sols and reinforced with several fiber types (recycled tire textile fibers, polyester blanket, silica felt, glass wool). A recycled rubber sol was prepared using peracetic acid and incorporated for the first time in TEOS-based sol-gel chemistry. The composites exhibited good thermal stability up to 400 °C and very low thermal conductivity, in the superinsulation range when using polyester fibers (16.4 ± 1.0 mW.m−1.K−1), and of 20–30 mW.m−1.K−1 for the remaining fibers. They could also endure cyclic compression loads with near full recovery, thus showing very promising properties for insulation of buildings.

» Author: Alyne Lamy-Mendes

» Reference: doi: 10.3390/ma15227897

» Publication Date: 08/11/2022

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737


                   




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