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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Chemical Aspects in Aging of NBR and HNBR-Materials

Giese  ulrich

Event: 185th Technical Meeting
Location: Louisville, KY
Date: March 24, 2014
Author: Ulrich Giese
Paper Number:

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  • Presentation Slides.
    The life time of elastomer components is limited by irreversible aging processes. Over the course of time mechanical-dynamic (fatigue), oxidation processes, temperature, exposition to UV light (photo oxidation) have an high negative influence on the physical and chemical properties. Functional failure of the component concerned can be the consequence. Especially in presence of high temperatures and mineral oils NBR and HNBR are used high performance polymers. The knowledge about chemical aging mechanisms, kinetics and about the weak parts in the polymer chain and in the chemical network are fundamental for life time prediction and measures in stabilizing the polymer matrix. So investigations by means of selected methods like FT-IR spectroscopy, chemiluminescence, TGA and NMR-relaxation are used to describe the mechanistic role of the ACN-groups during oxidative aging in HNBR and NBR and of the crosslinks in NBR elastomers.

    Papers from 185th Technical Meeting

    Items from 185th Technical Meeting