Flame retarding effect of graphite in rotationally molded polyethlene/graphite composites

dc.contributor.authorMhike, Washington
dc.contributor.authorFerreira, I.V.W. (Ignatius)
dc.contributor.authorLi, Jing
dc.contributor.authorStoliarov, Stanislav I.
dc.contributor.authorFocke, Walter Wilhelm
dc.contributor.emailwalter.focke@up.ac.zaen_ZA
dc.date.accessioned2015-06-15T12:32:38Z
dc.date.available2015-06-15T12:32:38Z
dc.date.issued2015-02
dc.description.abstractLinear low density polyethylene (LLDPE) compounds containing 10 wt.% graphite fillers were rotationally molded into flat sheets. Flame retardancy was studied using cone calorimeter tests conducted at a radiative heat flux of 35 kW m2. Only the expandable graphite, an established flame retardant for polyethylene, significantly reduced the peak heat release rate. Compared to the neat polyethylene, it was easier to ignite the LLDPE composites containing carbon black, expandable graphite and exfoliated graphite. However, rather unexpectedly, the inclusion of flake graphite increased the time to ignition by up to 80%. Simulations conducted with the ThermaKin numerical pyrolysis software suggest that increased reflectivity was mainly responsible for this effect.en_ZA
dc.description.embargo2016-02-20en_ZA
dc.description.librarianhb2015en_ZA
dc.description.sponsorshipThe South African Research Chairs Initiative of the Department of Science and Technology (DST) and the National Research Foundation (NRF) as well as Xyris Technology CC.en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628en_ZA
dc.identifier.citationMhike, W, Ferreira, IVW, Li, J, Stoliarov, SI & Focke, Wl 2015, 'Flame retarding effect of graphite in rotationally molded polyethlene/graphite composites', Journal of Applied Polymer Science, vol. 132, no. 7. Art. #41472, pp. 1-11.en_ZA
dc.identifier.issn(0021-8995 (print)
dc.identifier.issn1097-4628 (online)
dc.identifier.other10.1002/app.41472
dc.identifier.urihttp://hdl.handle.net/2263/45505
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2014 Wiley Periodicals, Inc. This is the pre-peer reviewed version of the following article : Flame retarding effect of graphite in rotationally molded polyethlene/graphite composites, Journal of Applied Polymer Science, vol. 132, no. 7, pp. 1-11, 2015, doi : 10.1002/app.41472. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1002/(ISSN)1097-4628en_ZA
dc.subjectRotomoldingen_ZA
dc.subjectPolyethyleneen_ZA
dc.subjectGraphiteen_ZA
dc.subjectFlammabilityen_ZA
dc.subjectCone calorimeteren_ZA
dc.subjectTime to ignitionen_ZA
dc.subjectModelingen_ZA
dc.subjectFlame retardanceen_ZA
dc.subjectPolyolefinsen_ZA
dc.subjectProperties and characterizationen_ZA
dc.titleFlame retarding effect of graphite in rotationally molded polyethlene/graphite compositesen_ZA
dc.typePostprint Articleen_ZA

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