کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9693444 | 1459121 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Time dependent effects on the rupture of molten linear polymers in extension
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The objective of the present work is to describe experimental work performed on the subject of rupture of polymer melts in uniaxial extensional flow. There are several reports on the literature dealing with the subject but nevertheless, the phenomenon of failure and rupture of polymer melts in extensional flow is still not well understood. In the present work, constant strain rate experiments in uniaxial extension were performed on commercial linear polymer melts until physical rupture of the samples was attained. Our results support the existence predicted by other authors of different flow regimes ranging from purely viscous to viscoelastic to rubbery. The time-to-rupture showed an increased dependency on the stress at rupture and for one of the materials a limiting stress was attained; simultaneously, a transition in rupture mode was observed from ductile to cohesive.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 126, Issues 2â3, 10 March 2005, Pages 93-103
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 126, Issues 2â3, 10 March 2005, Pages 93-103
نویسندگان
V.C. Barroso, J.M. Maia,