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Rheological Separation Free Volume Mechanism

IP.com Disclosure Number: IPCOM000068893D
Original Publication Date: 1978-Mar-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Nufer, RW [+details]

Abstract

Ceramic green sheets, while drying, normally utilize a solvent nonsolvent sheet formation mechanism to develop a microporous structure. The microporous sheet structure results from rheological changes associated with rapidly increasing viscosities that ultimately set the green sheet structure while a large degree of solvent remains in the polymer-binder network. At this point the solvent gradually diffuses from and through the polymer network with eventual microvoids resulting. The result is a microporosity most commonly referred to as low density green sheet.