标准摘要
[中文适用范围]： 本国际标准提供了一种评估聚合物系统在实验室加速老化和户外暴露过程中老化情况的方法论。该方法论主要适用于光老化，但也可应用于热老化。该方法论确定了跟踪控制材料在光老化过程中物理性能劣化的化学变化的分析。主要程序基于红外光谱分析，并在本国际标准中描述。此外，UV光谱用于监测某些添加剂的行为并识别聚合物材料变色的原因（颜料和着色剂的降解，或聚合物黄变）。 [外文原描述]： ISO 10640:2011 provides a methodology to assess the ageing of polymeric systems during exposure to laboratory accelerated weathering as well as in outdoor exposures. This methodology applies mainly to photoageing, but it can also be applied to thermal ageing. The methodology identifies analyses that follow the chemical changes which control the deterioration of physical properties of materials during photoageing. The main procedure is based on IR spectroscopy analysis and is described in the standard. In addition, UV spectroscopy is used for monitoring the behaviour of some additives and to identify the origin of discoloration in polymeric materials (degradation of pigments and colorants, or polymer yellowing). Examples of applications of this methodology are given in an annex as guidance for the interpretation of the results.
英文名称Plastics — Methodology for assessing polymer photoageing by FTIR and UV/visible spectroscopy