Title

The Rheological Behavior of Ceramic/Polymer Mixtures for Coextrusion Processing

Abstract

Coextrusion is a novel fabrication method for ceramic processing. However, the rheological behavior of ceramic/polymer blends during batching and extrusion in a coextrusion process is not well understood. In this study, the rheological properties of BaTiO3/polymer mixtures during batching in a high-shear rate mixer (C.W. Brabender) were investigated and several models were evaluated. The BaTiO3/polymer mixtures exhibited shear thinning behavior with a yield stress. The power-law model still fit for the data obtained from the high-shear rate mixer in the tested shear rate range. The results also showed that Bousmina's model only fits well for the pure polymer melts. For the ceramic/polymer mixtures, large deviations from Bousmina's model were observed.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Batching; Coextrusion; Rheological Behavior; Shear Thinning Behavior; Yield Stress

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Springer Verlag, All rights reserved.

Share

 
COinS