Polyethylene flame retarded with expandable graphite and a novel intumescent additive
dc.contributor.author | Focke, Walter Wilhelm | |
dc.contributor.author | Kruger, Hermanus Joachim | |
dc.contributor.author | Mhike, Washington | |
dc.contributor.author | Taute, A.T. (Albertus) | |
dc.contributor.author | Roberson, Albert | |
dc.contributor.author | Ofosu, Osei | |
dc.contributor.email | walter.focke@up.ac.za | en_US |
dc.date.accessioned | 2014-07-08T09:00:48Z | |
dc.date.issued | 2014-07 | |
dc.description.abstract | A novel intumescent additive was synthesized by neutralizing 3,5-diaminobenzoic acid hydrochloride salt with ammonium dihydrogen phosphate. This compound, which melts at 257 °C, decomposes concurrently to release carbon dioxide gas. The flame retardant performance of this compound as a primary fire retardant and in combination with expandable graphite was evaluated by cone calorimetry. Cone calorimeter results revealed that addition of 10 wt.% expandable graphite alone lowers peak heat release rate of carbon black-pigmented polyethylene from 710 ± 109 kW m-2 to 342 ± 15 kW m-2, while addition of 27 wt.% of the novel intumescent lowered it to 400 ± 16 kW m-2. Combinations of these two additives were able to decrease the peak heat release rate even further. Furthermore, the novel intumescent additive reduced the flame out time from 773 ± 307 s to 537 ± 69 s although all other expandable graphite containing samples increased it. | en_US |
dc.description.embargo | 2015-07-31 | |
dc.description.librarian | hb2014 | en_US |
dc.description.sponsorship | South African Research Chairs Initiative of the Department of Science and Technology (DST) and the National Research Foundation (NRF) | en_US |
dc.description.uri | http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628 | en_US |
dc.identifier.citation | Focke, WW, Kruger, HJ, Mhike, W, Taute, A, Roberson, A & Ofosu, O 2014, 'Polyethylene flame retarded with expandable graphite and a novel intumescent additive', Journal of Applied Polymer Science, vol. 131, no. 13, art. 40493, pp. 1-8. | en_US |
dc.identifier.issn | 0021-8995 (print) | |
dc.identifier.issn | 1097-4628 (online) | |
dc.identifier.other | 10.1002/app.40493 | |
dc.identifier.uri | http://hdl.handle.net/2263/40627 | |
dc.language.iso | en | en_US |
dc.publisher | Wiley-Blackwell | en_US |
dc.rights | © 2014 Wiley Periodicals, Inc. The definite version is available at : http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628. | en_US |
dc.subject | Polyethylene flame | en_US |
dc.subject | Expandable graphite | en_US |
dc.subject | Novel intumescent additive | en_US |
dc.subject | Flame retardance | en_US |
dc.subject | Polyolefins | en_US |
dc.subject | Composites | en_US |
dc.subject | Graphite | en_US |
dc.title | Polyethylene flame retarded with expandable graphite and a novel intumescent additive | en_US |
dc.type | Preprint Article | en_US |
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