NANOCOMPOSITE FLAME RETARDANT BASED ON PVC AND NANOCLAYS

摘要

? Process for making a nanocomposite flame retardant based on polyvinylchloride (PVC) and nanoclays obtained from a reaction of a smectitic clay with an organic modifier obtaining an organophilic nanoclay and by dispersing the organophilic nanoclay in a PVC matrix is disclosed. In particular, the organic modifier is a salt of quaternary ammonium ethoxylate in ethyleneglycol . The nanocomposite flame retardant, according to the invention, allows to exploit the good mechanical and chemical features of polyvinylchloride avoiding the drawbacks of the nanocomposite, in particular due to the reaction of "unzipping" the PVC. The nanocomposite that is obtained has improved flame retardant properties and is cheap with respect to traditional flame retardants of prior art besides having comparable resistance to temperature and to flames.