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用η＿（ｓｐ）／ｃ，拉伸性能，扫描电镜及ＤＴＡ等研究了以ＰＥＧ为一组分的共聚醚酯在日晒牢度计中的老化规律。防老剂的添加可有效地改善共聚醚酯的耐老化性能。防老剂的种类与添加量对改善耐老化性能有不同结果。文中所用防老剂Ａ的效果优于防老剂Ｂ，且防老剂Ａ必须有足够的添加量才能显示出明显效果。采用复合型防老剂有着最佳效果。
The aging law of copolyetherester with PEG as a component in the fastness test was studied by η sp / c, tensile properties, scanning electron microscopy and DTA. Antioxidant addition can effectively improve the copolyetherester aging resistance. The types and amounts of antioxidants have different consequences for improving the anti-aging properties. The antioxidant A used in this paper is better than the antioxidant B, and the antioxidant A must be added in sufficient amount to show a significant effect. The use of composite antioxidant has the best results.