Item 1
Plastics, Rubber and Composites
33, No. 4, 2004, p. 177 83
USE OF NFM IDDON COLD FEED EXTRUDER AND NOVEL LOW TEMPERATURE CURING EPDM TO REDUCE PROCESSING AND CURING ENERGY CONSUMPTION
Lewan M; Campion R; Iddon M
Materials Engineering Research Laboratory Ltd.; NFM Iddon Ltd.

The formulation of low temperature curing EPDM sulphur-cure compounds containing a compatible liquid polymer for inducing mouldability at low temperatures and ultra-active accelerators for effecting vulcanisation at temperatures as low as 90 to 120C is reported. The results are also reported of extrusion trials carried out on these low temperature curing compounds in an NFM Iddon high intensity mixing scroll extruder. The processing energy consumption and heating of the formulations are compared with those for a high grade EPDM automotive profile control compound as are the mechanical properties. The costs of the polymer/liquid and ultra-fast accelerators are also indicated.

EUROPEAN COMMUNITY; EUROPEAN UNION; UK; WESTERN EUROPE

Accession no. 923506

Item 2
Polymer Engineering and Science
44, No. 7, July 2004, p. 1247 57
DISPERSION, TEMPERATURE AND TORQUE MODELS FOR AN INTERNAL MIXER
Campanelli J R; Gurer C; Rose T L; Varner J E
Goodyear Tire & Rubber Co.

The development of models based on kinetic, thermodynamic and rheological equations to calculate degree of dispersion, batch temperature and relative batch viscosity at intervals during a mix cycle in an internal mixer is described. Predicted values based on the models are discussed in comparison with experimental torque and temperature curves for mixing natural rubber with carbon black...