Abstract

Different amounts of stearic acid were added to an alumina-polypropylene formulation. The effect of these additions on the flow properties, melting behaviour and thermal degradation characteristics of the formulation was investigated by capillary rheometry, dilatometry, differential scanning calorimetry and thermogravimetric studies. Two other formulations where the stearic acid was replaced by paraffin wax and silicone oil were prepared and subjected to identical investigations in order to compare the effect of these three additives.

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