标准编号：ISO 4577:2019
中文名称：塑料 聚丙烯和丙烯共聚物 在空气中的氧化稳定性的测定 烘箱法
英文名称：Plastics — Polypropylene and propylene-copolymers — Determination of thermal oxidative stability in air — Oven method
发布日期：2019-07
标准范围
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.
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