Part of this article was presented at the Annual Technical Conference 2007, Cincinnati, Ohio, May 2007.
Enhancing cell nucleation of thermoplastic polyolefin foam blown with nitrogen†
Article first published online: 7 JUN 2010
Copyright © 2010 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 118, Issue 3, pages 1691–1703, 5 November 2010
How to Cite
Kim, S. G., Lee, J. W. S., Park, C. B. and Sain, M. (2010), Enhancing cell nucleation of thermoplastic polyolefin foam blown with nitrogen. J. Appl. Polym. Sci., 118: 1691–1703. doi: 10.1002/app.32294
- Issue published online: 3 AUG 2010
- Article first published online: 7 JUN 2010
- Manuscript Accepted: 4 DEC 2009
- Manuscript Received: 20 MAR 2009
- AUTO21, Natural Science and Engineering Research Council of Canada
- Consortium for Cellular and Micro-Cellular Plastics
- foam extrusion;
More than ever before, thermoplastic polyolefin (TPO) is actively used for interior and exterior applications in the automotive industry. Foamed TPO parts use far less material than their solid counterparts and, thereby, reduce material cost, weight, and fuel usage. However, foamed TPO is not yet in mainstream use because the appropriate foaming technology is not yet well developed. The literature reports the use of carbon dioxide (CO2) as a blowing agent for TPO;1–3 there is, however, little research on the use of nitrogen (N2) as a blowing agent, despite nitrogen's numerous advantages. In this study, various talc contents were added to a TPO matrix consisting of polypropylene blended with a metallocene-based polyolefin elastomer. The effect of talc on the TPO foams blown with N2 was studied with a batch foaming simulation system. The simulated results were compared actual foam extrusion results. The influence of the N2 content and processing conditions on the cell nucleation behavior is discussed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010