標(biāo)準(zhǔn)號(hào)：BS EN ISO 4577-1999
中文標(biāo)準(zhǔn)名稱：塑料.聚丙烯和丙烯共聚物.空氣中熱氧化穩(wěn)定性的測(cè)定.烘箱法
英文標(biāo)準(zhǔn)名稱：Plastics - Polypropylene and propylene-copolymers - Determination of thermal oxidative stability in air - Oven method
標(biāo)準(zhǔn)類型：G31
發(fā)布日期：1999/9/15 12:00:00
實(shí)施日期：1999/9/15 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：G31
國(guó)際標(biāo)準(zhǔn)分類號(hào)：83.080.20
適用范圍：This International Standard specifies a method for the deter-mination 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 en-vironmental 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.