Date of Defense

Fall 12-7-1993

First Advisor

James E. Kline, Paper and Printing Science and Engineering

Second Advisor

David Peterson, Paper and Printing Science and Engineering

Third Advisor

Raymond Janes, Paper and Printing Science and Engineering

Abstract

This paper explored coating rheology, particularly within filter media. It was hypothesized that dilatant shear blocking could occur in a filter, under the right conditions. To produce this phenomenon, calcined clay was used because of its porous, bulky structure. The experiment documented the effects of screen slot size, coating percent solids, and percent calcined clay replacement on the tendency to shear block. It was shown that as slot sizes decreased and coating solids increased, the tendency to shear block increased. It was also shown that as more calcined clay was used in the coating makeup, the tendency to shear block increased. A relationship between an experimental shear rate calculation and Hercules High Shear Viscometer values was developed with some success, but with a poor statistical correlation.

Access Setting

Honors Thesis-Campus Only

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