Hygrothermal conditioning on the chemical, thermal and mechanical properties of aliphatic polyketone terpolymer, ethylene-propylene-carbon monoxide (EPCO), were investigated under high temperature fluid transport conditions. The DSC results suggest the effect of hygrothermal treatment and exposure time on the advancement of chain scission leading to an increase in crystallinity induced by chemi-crystallization, which was confirmed by FTIR results. TGA results of EPCO correspond to reductions of thermal stability with decreases in T_5% and T_max characteristic temperatures by 19% and 10%, respectively. The yield stress, stiffness and dynamic storage modulus increased with degradation time. However, decreases in the elongation at break were observed after prolonged periods of degradation due to the embrittlement resulting from polymer chain scission.

在高温流体输送条件下，研究了湿热条件对脂肪族聚酮三元共聚物乙烯-丙烯-一氧化碳（EPCO）的化学，热和机械性能的影响。DSC结果表明，湿热处理和暴露时间对断链进展的影响导致化学结晶诱导的结晶度增加，这被FTIR结果证实。EPCO的TGA结果对应于热稳定性的降低，T _5％和T _max降低特性温度分别降低了19％和10％。屈服应力，刚度和动态储能模量随降解时间的增加而增加。然而，由于聚合物断链导致的脆化，在长时间的降解后，观察到断裂伸长率的降低。