Loading…

Characterization of polypropylene pipes during accelerated aging in air and water

Commercial polypropylene pipes for water transport were aged in air at 135 °C and in water at 95 °C for up to 3000 and 4000 h respectively. The protection effect of the antioxidant in the polymer was investigated by measuring the oxidation induction time (OIT) and by determining the chemical changes...

Full description

Saved in:
Bibliographic Details
Published in:Polymer testing 1996-01, Vol.15 (4), p.347-361
Main Authors: Groff, I., Franzese, R., Landro, L.D., Pagano, M.R., Genoni, M.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Commercial polypropylene pipes for water transport were aged in air at 135 °C and in water at 95 °C for up to 3000 and 4000 h respectively. The protection effect of the antioxidant in the polymer was investigated by measuring the oxidation induction time (OIT) and by determining the chemical changes in the aged polymer by infrared spectrometry (FT-IR). A slight increase of crystallinity, melting temperature, crystallite dimensions with aging was observed via FT-IR, small angle light scattering (SALS) and differential scanning calorimetry (DSC). Tensile tests of two different pipes showed dramatic decay of mechanical properties with the conditioning time in air for the product less protected from thermal oxidation.
ISSN:0142-9418
1873-2348
DOI:10.1016/0142-9418(95)00039-9