Surface modification of fabrics for improved flash‐fire resistance using atmospheric pressure plasma in the presence of a functionalized clay and polysiloxane

Horrocks, Richard ORCID: 0000-0003-1431-058X, Nazaré, S, Masood, Rashid, Kandola, Baljinder K. ORCID: 0000-0002-3621-3724 and Price, Dennis (2011) Surface modification of fabrics for improved flash‐fire resistance using atmospheric pressure plasma in the presence of a functionalized clay and polysiloxane. Polymers for Advanced Technologies, 22 (1). pp. 22-29. ISSN 1099-1581

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Official URL: https://onlinelibrary.wiley.com/journal/10991581

Abstract

Improving flash fire resistance of otherwise flame resistant fabrics is a recognised challenge within the civil emergency and defence communities. Simulation of the flash fire condition using cone calorimetry has demonstrated the effectiveness of atmospheric plasma treatments in which either a functionalised nanoclay, a polysiloxane (poly(hexamethyldisiloxane)) or both are deposited on to plasma-activated fibre surfaces. Textile substrates comprised flame retardant (Proban®) cotton and a poly (meta-aramid) (Nomex®). Results show that the generated surface layer has a measurable effect on fabric ignition and burning characteristics when exposed in a cone calorimeter at heat flux levels up to 70 kW/m2. Reductions in peak heat release (PHRR) values are observed for all substrates especially for argon/clay and argon/clay/polysiloxane, plasma-treated samples, with reductions of over 50% being observed for Proban® cotton and smaller reductions (≤ 20%) for Nomex® fabrics. Both scanning electron microscopic and cone calorimetric studies show that these properties are retained after a simulated washing process including the argon/clay plasma-treated Proban® and Nomex® fabrics in which no potentially binding polysiloxane was present. This suggests that plasma-activated fibre surfaces in the presence of a functionalised clay enables relatively strong binding forces to be generated. The results provide further evidence in addition to our earlier reported studies, that atmospheric plasma treatment of fabric surfaces in the presence of a nanoclay produces an inorganic coating that confers reduced flammability at the high heat fluxes used suggesting increased resistance to flash fire ignition.

Item Type: Article
Uncontrolled Keywords: Atmospheric-pressure plasma, flash-fire resistance, nanoclay, polysiloxane, flame retardant fabrics, cotton, poly(meta-aramid)
Subjects: T Technology > T Technology (General)
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Sarah Taylor
Date Deposited: 26 Mar 2018 14:57
Last Modified: 26 Mar 2018 14:57
Identification Number: 10.1002/pat.1707
URI: http://ubir.bolton.ac.uk/id/eprint/1624

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