利用光电子能谱(XPS)分析方法,研究了不同老化温度和老化时间下极性化SBS的热氧老化行为.试验结果表明,高温下不合防老剂的极性化SBS会发生热氧老化.经热氧老化后,极性化SBS表面O元素的相对含量高于未老化试样中O元素的相对含量,且弹性体表面有C=O生成.随老化时间延长,弹性体表面元素组成中O的相对含量逐渐升高,随老化温度升高,弹性体表面元素组成中氧的含量先升高而后降低.对于极性化SBS的热氧老化,老化温度对其影响程度要大于老化时间的影响.
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