Flame retardant polyamide fibres: The challenge of minimising flame retardant additive contents with added nanoclays

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dc.contributor.author Horrocks, A. R.
dc.contributor.author Sitpalan, A.
dc.contributor.author Zhou, C.
dc.contributor.author Kandola, B.
dc.date.accessioned 2019-08-11T06:18:31Z
dc.date.available 2019-08-11T06:18:31Z
dc.date.issued 2016
dc.identifier.uri http://www.digital.lib.esn.ac.lk/handle/123456789/3974
dc.description.abstract This work shows that halogen-free, flame retarded polyamide 6 (PA6), fabrics may be produced in which component fibres still have acceptable tensile properties and low levels (preferably ď10 wt %) of additives by incorporating a nanoclay along with two types of flame retardant formulations. The latter include (i) aluminium diethyl phosphinate (AlPi) at 10 wt %, known to work principally in the vapour phase and (ii) ammonium sulphamate (AS)/dipentaerythritol (DP) system present at 2.5 and 1 wt % respectively, believed to be condense phase active. The nanoclay chosen is an organically modified montmorillonite clay, Cloisite 25A. The effect of each additive system is analysed in terms of its ability to maximise both filament tensile properties relative to 100% PA6 and flame retardant behaviour of knitted fabrics in a vertical orientation. None of the AlPi-containing formulations achieved self-extinguishability, although the presence of nanoclay promoted lower burning and melt dripping rates. The AS/DP-containing formulations with total flame retardant levels of 5.5 wt % or less showed far superior properties and with nanoclay, showed fabric extinction times ď 39 s and reduced melt dripping. The tensile and flammability results, supported by thermogravimetric analysis, have been interpreted in terms of the mechanism of action of each flame retardant/nanoclay type. en_US
dc.language.iso en en_US
dc.publisher Polymers en_US
dc.subject polyamide 6 en_US
dc.subject aluminium diethy phosphinate en_US
dc.subject ammonium sulphamate en_US
dc.subject dipentaerythritol en_US
dc.subject nanoclay en_US
dc.subject tensile properties en_US
dc.subject flammability en_US
dc.subject fabrics en_US
dc.title Flame retardant polyamide fibres: The challenge of minimising flame retardant additive contents with added nanoclays en_US
dc.type Article en_US
dc.identifier.sslno 03 en_US

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