标准摘要
[中文适用范围]： This part of IEC TS 61244, which is a technical specification, reviews experimental techniques to quantitatively monitor the effects when oxygen is present during ageing of polymers in various environments including temperature, radiation or ultraviolet. Inhomogenous ageing effects caused by diffusion-limited oxidation are often encountered and provide theoretical equations to estimate their importance. These effects make it difficult to understand the ageing process and to extrapolate accelerated exposure to long-term conditions. It is widely known that mechanical properties degrade prior to electrical properties. These changes are consequences of chemical changes such as oxidation. In this technical specification, only mechanical or chemical monitoring techniques are of interest. This technical specification does not deal with electrical monitoring techniques. [外文原描述]： IEC TS 61244-1:2014, which is a technical specification, reviews experimental techniques to quantitatively monitor the effects when oxygen is present during ageing of polymers in various environments including temperature, radiation or ultraviolet. This edition includes the following significant technical changes with respect to the previous edition: a) numerical simulation of DLO is much improved; b) geometry of samples has been expanded from only the case of the infinite plane to the cylindrical and the spherical cases.
英文名称Determination of long-term radiation ageing in polymers - Part 1: Techniques for monitoring diffusion-limited oxidation