ISO 4577:2019 PDF

Scope: This document specifies a method for the determination of the resistance of moulded test specimens of polypropylene and propylene-copolymers to accelerated ageing by heat in the presence of air using a forced draught oven. The method represents an attempt to estimate the service life of parts fabricated from propylene plastics. The stability determined by this method is not directly related to the suitability of the material for use when different environmental conditions prevail. NOTE The specified thermal levels are considered sufficiently severe to cause failure of commercial grades of heat-stable propylene plastics within a reasonable period of time. If desired, lower temperatures can be applied to estimate the performance of propylene plastics with lower heat stabilities.

ISO 4577:2019 Referenced Document

ISO 19069-2 Plastics - Polypropylene (PP) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties
ISO 291 Plastics - Standard atmospheres for conditioning and testing

2019 ISO 4577:2019 Plastics — Polypropylene and propylene-copolymers — Determination of thermal oxidative stability in air — Oven method
1983 ISO 4577:1983 Plastics; Polypropylene and propylene- copolymers; Determination of thermal oxidative stability in air; Oven method