Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


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IMPACT OF HIGH STRAIN RATE CYCLES ON THE STRAIN INDUCED CRYSTALLINE PROPERTIES OF NATURAL RUBBER

C3

Event: 182nd Technical Meeting
Location: Cincinnati, OH
Date: October 09, 2012
Author: By Nicolas Candau*, Laurent Chazeau, Jean-Marc Chenal, Catherine Gauthier, Etienne Munch
Paper Number: C3

Price: $20.00

  • 9th Annual Student Colloquium & Poster Session.
    Real time Wide-Angle X-ray Scattering (WAXS) measurements during cyclic tensile tests at high strain rates (from 8 s'1 to 280 s1) and at room temperature on crosslinked Natural Rubber (NR) are performed thanks to the development of a specific homemade device. From the observed influence of the frequency on the crystallization index at the maximum sample elongation, a characteristic crystallization time is deduced. Furthermore, an adjustable stroboscopic system allows obtaining the crystalline properties not only at the maximum sample elongation but along the complete cycle. The experiments enabled us to extract a critical time of 50 msec below which the macromolecules cannot appreciably crystallize. This
    critical time is characterized by a change in the growth kinetics of the crystallites in the plan
    orthogonal to the traction axis. The orientation of the crystallites is not significantly modified by high velocities of deformation.

    Papers from 182nd Technical Meeting

    Items from 182nd Technical Meeting