SBIR Phase I: Optimization of Screw Geometry and Processing Conditions using Three-Dimensional Simulation of Melting and Melt Flow in Twin-Screw Extruders

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: 0637451
Agency Tracking Number: 0637451
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: MI
Solicitation Number: NSF 06-553
Small Business Information
Plastic Flow, LLC
1206 Birch Street, Suite 290, Houghton, MI, 49931
DUNS: 122865244
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mahesh Gupta
 PhD
 (906) 483-0691
 mahesh@plasticflow.com
Business Contact
 Mahesh Gupta
Title: PhD
Phone: (906) 483-0691
Email: mahesh@plasticflow.com
Research Institution
N/A
Abstract
This Small Business Innovation Research (SBIR) Phase I project will develop software for three-dimensional simulation of the two-phase flow in a twin-screw extruder. Currently available analytical tools for design of twin-screw extruders are based upon simplified one-dimensional or two-dimensional analysis. However, the two-phase flow in twin-screw extruders is complex; and predictions from these simplified analyses cannot reliably predict the velocity, pressure and temperature distribution. The proposed software for three-dimensional simulation of the two-phase flow will incorporate a proprietary constitute theory that takes into account both the shear viscosity and the elongational viscosity of the polymer. Since the flow in intermeshing region of a twin-screw extruder is highly elongation dominated, the predictions from the proposed software will be more accurate than those from currently available tools that ignore the effect of elongational viscosity. The proposed technology will enhance the understanding of polymer flow in twin-screw extruders and will lead to developing innovative screw profiles. The use of this software will also enable various companies including plastic material suppliers, twin-screw extruder manufacturers and plastic compounders to cut costs.

* information listed above is at the time of submission.

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