Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 39, Pages 12044-12052Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta12431b
Keywords
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Funding
- Fundacao para a Ciencia e a Tecnologia (FCT)
- Solvay Portugal (Project Aeronag)
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A new flexible insulator was developed, consisting of a silica-latex-fiber nanocomposite aerogel that combines the lightness and insulating properties of silica aerogels with the mechanical properties of silica-latex hybrids and the flexibility of fibers. This was accomplished by coating selected insulating fibers (polyester and glass) with a silica-polymer hybrid aerogel, synthesized in situ by a two-step sol-gel process, consisting of the acidic co-hydrolysis of TEOS and trimethoxysilyl-grafted latex nanoparticles in excess water, followed by basic co-condensation. The hybrid coating has improved mechanical properties that allow its drying under subcritical conditions. The outstanding properties of the insulating blankets produced render them extremely attractive for high-technology applications, and, due to the low energy consumption process, they may even displace the commonly used mineral wool, by presenting a best value-for-money compromise.
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