Extrusion behavior of filled polymeric systems exhibiting an apparent yield stress

Autor:	A. J. Poslinski, F. J. Frechette, M. E. Ryan, Srinivasan Seshadri, Rakesh K. Gupta
Rok vydání:	1988
Předmět:	Pressure drop Materials science Polymers and Plastics Plastics extrusion Composite number Viscometer General Chemistry Volumetric flow rate Viscosity visual_art Materials Chemistry visual_art.visual_art_medium Extrusion Ceramic Composite material
Zdroj:	Polymer Engineering and Science. 28:453-459
ISSN:	1548-2634 0032-3888
DOI:	10.1002/pen.760280708
Popis:	An investigation was undertaken to study the extrusion behavior of composite systems. A compound made up of approximately 50 percent ceramic particulates by volume dispersed in a high molecular weight thermoplastic polymer was characterized by measuring the shear viscosity on an Instron capillary viscometer. The experimental data indicated that the ceramic composite exhibited an apparent yield stress. As a result, an expression that was previously shown to provide flexibility for describing a yield stress at low rates of deformation could explain the viscosity of the ceramic composite. The expression was then applied to the flow analysis of both a “rod” and a “slit” die in an extrusion process, and the derived equations adequately correlated experimental volumetric flow rate us. Pressure drop data obtained on a laboratory extruder.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::818f5a4462bf92fc38d94d5f30e852ed https://doi.org/10.1002/pen.760280708 Zobrazit plný text záznamu Plný text