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Browsing by Author "Ofosu, O"

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Cone calorimeter study of polyethylene flame retarded with expandable graphite and intumescent fire-retardant additives

Author: Kruger, HR ; Focke, WW ; Mhike, W ; Taute, A ; Roberson, A ; Ofosu, O Date: Oct 2014 Polyethylene was flame retarded with two intumescent-type additives, 3,5-diaminobenzoic acid phosphate and ethylenediamine phosphate, which differ with respect to their decomposition onset temperatures, along with varying ratios of two grades ... Read more
The effect of magnesium hydroxide, hydromagnesite and layered double hydroxide on the heat stability and fire performance of plasticized poly(vinyl chloride)

Author: Molefe, DM ; Labuschagne, FJFWJ ; Focke, WW ; Van der Westhuizen, I ; Ofosu, O Date: Sep 2015 Emulsion grade PVC was plasticised with 100 phr diisononyl phthalate and filled with 30 phr of different hydrated filler-type flame retardant additives. Static heat stabilities were determined at 200 oC by following the time dependance of ... Read more
Flexible PVC flame retarded with expandable graphite

Author: Focke, WW ; Muiambo, H ; Mhike, W ; Kruger, HJ ; Ofosu, O Date: Feb 2014 The utility of expandable graphite as a flame retardant for PVC, plasticized with 60 phr of a phosphate ester, was investigated. Cone calorimeter results, at a radiant flux of 35 kW m 2, revealed that adding only 5 wt.% expandable graphite ... Read more
Investigation of heat transfer for extruded polymers cooled in water

Author: Kumar, R ; Kumar, R ; Ofosu, O Date: Oct 2015 The commodity articles from polyethylene (PE) and polypropylene (PP) are widely used in today’s world. To reduce the carbon footprint, biopolymers such as polylactic acid (PLA) as commodity plastics are also explored. Often, these polymers ... Read more
Polyethylene flame retarded with expandable graphite and a novel intumescent additive

Author: Focke, WW ; Kruger, HJ ; Mhike, W ; Taute, A ; Roberson, A ; Ofosu, O Date: Jul 2014 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 ... Read more

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Browsing by Author "Ofosu, O"

Browsing by Author "Ofosu, O"

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