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Título:
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Tough polymer aerogels incorporating a conformal inorganic coating for low flammability and durable hydrophobicity
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Autor/a:
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Sun, Hua; Schiraldi, David A.; Chen, Dayong; Wang, Danqi; Sánchez Soto, Miguel
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials |
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Abstract:
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Both inorganic and polymeric aerogels are well-known in the materials field. Inorganic aerogels are generally susceptible to brittle fracture, while polymeric aerogels tend to exhibit low modului and high flammability. To overcome these disadvantages, we introduce a new approach to the design of aerogels. A microporous poly(vinyl alcohol) (PVA) aerogel/silica nanocomposite was prepared by growing a silica conformal coating onto a PVA aerogel scaffold. Such aerogel/silica nanocomposites show significant improvement in their mechanical properties over either individual component. The nanocomposites show excellent fire resistance since the silica conformal coating serves as a barrier for heat transfer and mass loss of the coated organic materials. After a fluorocarbon silane treatment, the nanocomposites also show durable superhydrophobicity. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials
-Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
-Aerogels
-Nanocomposites (Materials)
-Fire testing
-Nanocomposite
-Aerogel
-Coating
-Fire resistance
-Hydrophobicity
-Aerogels
-Nanocompostos (Materials) -- Assaigs de comportament davant el foc |
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Derechos:
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Tipo de documento:
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Artículo - Versión presentada
Artículo |
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