The environmental adaptability for porous polyimide cage materials is studied by using high temperature aging ex-periments.The results show that the tensile strength,impact strength and friction coefficient of materials have no obvious change,the IR spectra keeps unchanged before or after aging,and the glass transition temperature stays the same.The ther-mal stability and environmental adaptability for porous polyamide cage materials are good.%采用高温老化试验研究了多孔聚酰亚胺复合保持架材料的环境适应性，结果显示：材料的拉伸强度、冲击强度、摩擦因数无明显变化，老化前后红外谱图无变化，玻璃化转变温度保持不变；多孔聚酰亚胺复合保持架材料的热稳定性较好，环境适应性较好。
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