For the first time an innovative approach to manufacture flame shield coatings by producing thin polyaramidic nanofibrous sheets via electrospinning is presented. Nanofibrous mats with a well-defined alignment provide a thin, compact but pliable layer of intrinsically flame-retardant material. The electrospun membrane (about 0.4 g/100 cm2) displays good mechanical properties and easy handling and could be applied onto epoxy-carbon fiber composites to modify their flame behaviour. Conecalorimetric tests show time to ignition doubled for the coated material and a dramatically reduced ability to propagate fire once ignited. Finally, addition of a simple polyaramidic nanofibrous membrane is proved able to change the flame behaviour of a composite from a high-risk material class, to an intermediate one.
Poly-m-aramid electrospun nanofibrous mats as high-performance flame retardants for carbon fiber reinforced composites / Mazzocchetti, Laura; Benelli, Tiziana; Maccaferri, Emanuele; Merighi, Stefano; Belcari, Juri; Zucchelli, Andrea; Giorgini, Loris. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - STAMPA. - 145:(2018), pp. 252-260. [10.1016/j.compositesb.2018.03.036]
Poly-m-aramid electrospun nanofibrous mats as high-performance flame retardants for carbon fiber reinforced composites
Mazzocchetti, Laura;Benelli, Tiziana;Maccaferri, Emanuele;MERIGHI, STEFANO;Belcari, Juri;Zucchelli, Andrea;Giorgini, Loris
2018
Abstract
For the first time an innovative approach to manufacture flame shield coatings by producing thin polyaramidic nanofibrous sheets via electrospinning is presented. Nanofibrous mats with a well-defined alignment provide a thin, compact but pliable layer of intrinsically flame-retardant material. The electrospun membrane (about 0.4 g/100 cm2) displays good mechanical properties and easy handling and could be applied onto epoxy-carbon fiber composites to modify their flame behaviour. Conecalorimetric tests show time to ignition doubled for the coated material and a dramatically reduced ability to propagate fire once ignited. Finally, addition of a simple polyaramidic nanofibrous membrane is proved able to change the flame behaviour of a composite from a high-risk material class, to an intermediate one.File | Dimensione | Formato | |
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