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  • Title: Silica Aerogel-Rubber Composite: A Sustainable Alternative for Buildings' Thermal Insulation.
    Author: Alves P, Dias DA, Pontinha ADR.
    Journal: Molecules; 2022 Oct 21; 27(20):. PubMed ID: 36296724.
    Abstract:
    Silica aerogel composites with recycled tire rubber have been synthesized and evaluated for their potential use for thermal protection in buildings. The present work describes for the first time the preparation of silica-based aerogel composites containing recycled rubber tires reinforced with polyvinyl butyral (PVB) by hot pressing. The developed composite was extensively characterized regarding its physical, morphological, thermal and mechanical features, and the results showed their properties were relevant, leading to composites with different properties/performances. The obtained bulk density values were satisfactory, down to 474 kg·m-3, and very good thermal properties were achieved, namely, thermal conductivity as low as 55 mW·m-1·K-1 for composites with silica aerogel, recycled tire rubber and PVB. The most promising composites were those based on low bulk density and thermal conductivity values, and they were thermally stable, indicating their suitability for thermal insulation applications.
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