PERFORMANCE OF FLUOROELASTOMERS SUCCESSFULLY MEETS THE PREDICTIONS

摘要

The new generation of processing additives from DuPont Dow Elastomers was launched 5 years ago. The market has successfully adopted this product family thanks to its versatility and superior performance. This 5th year anniversary is an excellent opportunity for reviewing performance in use versus promises made at launch. First this presentation will illustrate the characteristics of the fluoroelastomer that forms the foundation of the new processing aids, as compared with older generation fluoroelastomers. This is demonstrated both in the extrusion time to zero melt-fracture films as well as in the heat stability of the fluoroelastomer. The latest technology comprises a patented combination of fluoroelastomer, ethylene co-polymer, and a low level of polyethylene glycol (PEG). We will investigate the function of the ethylene co-polymer on the line conditioning speed in the presence of component interactions. In addition, the usage of polyethylene glycol will be discussed. PEG's role during conditioning is established, but less well known is its potential effect on the extruder output. Finally, we will consider the optical properties when using DuPont Dow Elastomers processing additives. To conclude, the present story demonstrates a successful transition from laboratory concept through commercialization. Predicted key performance criteria have been validated at customers. This now sets the stage for the genesis of a new generation fluoroelastomer based processing additives.