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Browsing Chemical Engineering by UP Author "Mhike, Washington"
Now showing items 1-10 of 10
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Focke, Walter Wilhelm; Badenhorst, Heinrich; Mhike, Washington; Kruger, Hermanus Joachim; Lombaard, Dewan (Elsevier, 2014-05)Thermal analysis and other techniques were employed to characterize two expandable graphite samples. The expansion onset temperatures of the expandable graphite’s were ca. 220 °C and 300 °C respectively. The key finding ...
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Kruger, Hermanus Joachim; Focke, Walter Wilhelm; Mhike, Washington; Taute, A.T. (Albertus); Roberson, Albert; Ofosu, Osei (Sage, 2014-06)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 ...
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Mhike, Washington; Ferreira, I.V.W. (Ignatius); Li, Jing; Stoliarov, Stanislav I.; Focke, Walter Wilhelm (Wiley, 2015-02)Linear 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 ...
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Focke, Walter Wilhelm; Muiambo, H.F. (Herminio Francisco); Mhike, Washington; Kruger, Hermanus Joachim; Ofosu, Osei (Elsevier, 2014-02)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.% ...
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Focke, Walter Wilhelm; Kruger, Hermanus Joachim; Mhike, Washington; Taute, A.T. (Albertus); Roberson, Albert; Ofosu, Osei (Wiley-Blackwell, 2014-07)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 ...
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Mhike, Washington; Focke, Walter Wilhelm; Asante, Joseph K.O. (Sage, 2018)Graphite nanoplatelets with an average particle size of 13 μm and an estimated flake thickness of about 76 nm were prepared by microwave exfoliation, followed by ultrasonication-assisted liquid-phase delamination, of an ...
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Mhike, Washington; Focke, Walter Wilhelm; Mackenzie, Jodi; Mills, Edward J.; Badenhorst, Heinrich (Elsevier, 2018-05)Mixtures of stearyl alcohol with palm triple pressed acid (essentially a mixture of palmitic and stearic acid derived from palm oil) were prepared and characterized to assess their phase change thermal energy storage ...
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Mhike, Washington; Focke, Walter Wilhelm (Wiley, 2013-12)Antistatic polymers are required to dissipate static charges safely from component surfaces. Our overall objective has been to develop cost-effective flame-retarded and antistatic polyethylene compounds suitable for ...
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Kruger, Hermanus Joachim; Focke, Walter Wilhelm; Mhike, Washington; Taute, A.T. (Albertus); Roberson, Albert (Wiley, 2017-10)Low-density polyethylene was flame retarded by combinations of expandable graphite with either ethylenediamine phosphate or 3,5-diaminobenzoic acid phosphate. Cone calorimeter, laser pyrolysis, and open flame exposure tests ...
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Mhike, Washington; Focke, Walter Wilhelm; Mofokeng, J.P.; Luyt, Adriaan S. (Elsevier, 2012-01-10)Phase change materials based on graphite-filled wax/polyethylene blends could find application as thermal energy storage materials. Such compounds, comprising wax to polyethylene in a 3:2 proportion, were prepared by ...
Now showing items 1-10 of 10