Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 3: Polymer Materials
CPP 3.4: Vortrag
Montag, 27. März 2006, 11:00–11:15, ZEU 114
High-Performance Polypropylene pipes via biaxial processing — •Ralf Kleppinger1, Patrick Voets2, Maria Soliman2, Colin Morath3, and Ian Ward3 — 1DSM Research, Geleen, The Netherlands — 2SABIC EuroPetrochemicals, Geleen, The Netherlands — 3Department for Physics and Astronomy, Leeds University, Great Britain
Besides revealing a complex polymorphism that is affected by thermal history but also specific additives, recent studies have also revealed that polypropylene reveals a unique crystallization behavior when subjected to sufficiently strong shear fields. The interplay among both is of crucial importance with respect to the morphology and finally determines macroscopic properties of the material. Using polypropylene pipes as a practical example we demonstrate how processing-induced orientation in the material can either result in deterioration or enhancement of properties. Our results demonstrate that by using the die-drawing process a significant improvement of the properties of polypropylene pipes can be achieved.