Archivio Istituzionale della RicercaA new and ecofriendly chemical approach uses inexpensive waterglass solutions in order to promote the formation of a silica-based coating on hemp fabrics; this green coating is able to act as a thermal shield and to protect the latter from heat sources. Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR_FTIR) and Nuclear Magnetic Resonance (NMR) confirm the formation of –C–O–Si– covalent bonds between the coating and the cellulosic substrate. The waterglass treatment improves the fire behavior of hemp fabric/epoxy composites, also in combination with ammonium polyphosphate, and favors a remarkable decrease of the heat release rate, total heat release, total smoke release and specific extinction area (respectively by 83%, 35%, 45% and 44%) as compared to untreated hemp/epoxy composites, favoring the formation of a very stable char, as also assessed by Thermogravimetric Analysis (TGA).
A fire retardant strategy for hemp fabric/epoxy composites / Bifulco, Aurelio; Durante, Massimo; Malucelli, Giulio; Branda, Francesco. - ELETTRONICO. - (2016), pp. 72-72. (Intervento presentato al convegno Merck Young Chemists Symposium tenutosi a Roma nel 13-15 Novembre 2017).
A fire retardant strategy for hemp fabric/epoxy composites
Giulio Malucelli;
2016
Abstract
A new and ecofriendly chemical approach uses inexpensive waterglass solutions in order to promote the formation of a silica-based coating on hemp fabrics; this green coating is able to act as a thermal shield and to protect the latter from heat sources. Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR_FTIR) and Nuclear Magnetic Resonance (NMR) confirm the formation of –C–O–Si– covalent bonds between the coating and the cellulosic substrate. The waterglass treatment improves the fire behavior of hemp fabric/epoxy composites, also in combination with ammonium polyphosphate, and favors a remarkable decrease of the heat release rate, total heat release, total smoke release and specific extinction area (respectively by 83%, 35%, 45% and 44%) as compared to untreated hemp/epoxy composites, favoring the formation of a very stable char, as also assessed by Thermogravimetric Analysis (TGA).
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2693594
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo