title: High-throughput method to predict extrusion pressure of ceramic pastes.
abstract: A new method was developed to measure the rheology of extrudable ceramic pastes using a Hamilton MicroLab Star liquid handler. The Hamilton instrument, normally used for high throughput liquid processing, was expanded to function as a low pressure capillary rheometer. Diluted ceramic pastes were forced through the modified pipettes, which produced pressure drop data that was converted to standard rheology data. A known ceramic paste containing cellulose ether was made and diluted to various concentrations in water. The most dilute paste samples were tested in the Hamilton instrument and the more typical, highly concentrated, ceramic paste were tested with a hydraulic ram extruder fitted with a capillary die and pressure measurement system. The rheology data from this study indicates that the dilute high throughput method using the Hamilton instrument correlates to, and can predict, the rheology of concentrated ceramic pastes normally used in ceramic extrusion production processes.
authors: The Dow Chemical Company , Number 936 Zhangheng Road, PuDong New Area, Shanghai 201203, China.
authors: Kevin
authors: K
authors: Cao
authors: Yang
authors: Y
authors: Liu
authors: Christopher
authors: C
authors: Tucker
authors: Michael
authors: M
authors: Baumann
authors: Grote
authors: G
authors: Grit
authors: Steven
authors: S
authors: Lakso
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D057166:High-Throughput Screening Assays / Q000295:instrumentation / Q000379:methods*; D011312:Pressure; D012212:Rheology / Q000295:instrumentation / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water