The visualisation study of the dynamics of flow in an
internal mixer was undertaken by using a laboratory-scale
Banbury mixer with a transparent plastic chamber. The elastomer
used was a silicone rubber (ICI grade SE 33) which provided
a satisfactory rubbery behaviour and enabled cinematography
to be used. The detailed characteristics of flow patterns in
the mixing chamber were determined by the movement of coloured
For the purpose of analysis four regions inside the mixing
chamber were identified. The region in front of the rotor wings,
the void region, the S-shaped region and the bridge region.
The movement of material in each of these regions has been determined
separately for a range of rotor speeds and fill factors,
followed by the interaction between the regions. [Continues.]
A Master's Thesis. Submitted in partial fulfilment of the requirements for the award of Master of Philosophy at Loughborough University.
Malaysian Government, Public Service Department. Rubber Research Institute of Malaysia.