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Degradation of Polypropylene Filament Under Elevated Temperature and High Oxygen Pressure
Conference proceeding

Degradation of Polypropylene Filament Under Elevated Temperature and High Oxygen Pressure

Y. G. Hsuan, M. Li and Wai-Kuen Wong
SERVICE LIFE PREDICTION OF POLYMERIC MATERIALS: GLOBAL PERSPECTIVES
01 Jan 2009
DOI: https://doi.org/10.1007/978-0-387-84876-1_11

Abstract

Materials Science Materials Science, Multidisciplinary Physical Sciences Polymer Science Science & Technology Technology
The oxidation degradation of a stabilized polypropylene filament was evaluated in incubation conditions that combined elevated temperature and high oxygen pressure. The incubation temperatures ranged from 45 to 105 degrees C; oxygen pressures were 1.3, 2.8, 4.9, and 6.3 MPa. The antioxidant content in the filament was measured using the high pressure oxidative induction time (HP-OIT) test. while the oxidation of the polymer was evaluated by measurement of the tensile strength. Onset of oxidation corresponded to 10% HP-OIT retained. The temperature effect on the oxidation rate obeys the Arrhenius equation; the oxidation rate is exponentially related to the pressure. Temperature and pressure were found to act independently on the oxidation of the PP filament. The service life at 25 degrees C and one atmosphere was predicted based on a master curve that was generated by applying time-temperature superposition and time-pressure superposition principles.

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Web of Science research areas
Materials Science, Multidisciplinary
Polymer Science
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