Focke, WWKruger, HJMhike, WTaute, ARoberson, AOfosu, O2015-01-142015-01-142014-07Focke, W.W, Kruger, H.J, Mhike, W, Taute, A, Roberson, A and Ofosu, O. 2014. Polyethylene flame retarded with expandable graphite and a novel intumescent additive. Journal of Applied Polymer Science, vol. 131(13), pp 1-80021-8995http://onlinelibrary.wiley.com/doi/10.1002/app.40493/pdfhttp://hdl.handle.net/10204/7833Copyright: 2015 Wiley. This is an ABSTRACT ONLY. The definitive version is published in Journal of Applied Polymer Science, vol. 131(13), pp 1-8A 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 (EG) was evaluated by cone calorimetry. Cone calorimeter results showed that addition of 10 wt % EG alone lowers peak heat release rate (pHRR) of carbon black-pigmented polyethylene from 7106109 to 342615 kW m22, whereas addition of 27 wt % of the novel intumescent lowered it to 400616 kW m22. Combinations of these two additives were able to decrease the pHRR even further. Furthermore, the novel intumescent additive reduced the flame out time from 7736307 to 537669 s although all other EG containing samples increased it. VC 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40493.enFlame retardancePolyolefinsCompositesGraphiteArticleFocke, W., Kruger, H., Mhike, W., Taute, A., Roberson, A., & Ofosu, O. (2014). Polyethylene flame retarded with expandable graphite and a novel intumescent additive. http://hdl.handle.net/10204/7833Focke, WW, HJ Kruger, W Mhike, A Taute, A Roberson, and O Ofosu "Polyethylene flame retarded with expandable graphite and a novel intumescent additive." (2014) http://hdl.handle.net/10204/7833Focke W, Kruger H, Mhike W, Taute A, Roberson A, Ofosu O. Polyethylene flame retarded with expandable graphite and a novel intumescent additive. 2014; http://hdl.handle.net/10204/7833.TY - Article AU - Focke, WW AU - Kruger, HJ AU - Mhike, W AU - Taute, A AU - Roberson, A AU - Ofosu, O AB - 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 (EG) was evaluated by cone calorimetry. Cone calorimeter results showed that addition of 10 wt % EG alone lowers peak heat release rate (pHRR) of carbon black-pigmented polyethylene from 7106109 to 342615 kW m22, whereas addition of 27 wt % of the novel intumescent lowered it to 400616 kW m22. Combinations of these two additives were able to decrease the pHRR even further. Furthermore, the novel intumescent additive reduced the flame out time from 7736307 to 537669 s although all other EG containing samples increased it. VC 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40493. DA - 2014-07 DB - ResearchSpace DP - CSIR KW - Flame retardance KW - Polyolefins KW - Composites KW - Graphite LK - https://researchspace.csir.co.za PY - 2014 SM - 0021-8995 T1 - Polyethylene flame retarded with expandable graphite and a novel intumescent additive TI - Polyethylene flame retarded with expandable graphite and a novel intumescent additive UR - http://hdl.handle.net/10204/7833 ER -