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聚酯无纺布作为一种土工合成材料，其耐久性是工程界普遍关心的问题．老化试验是评价、研究各种高分子材料在一定环境下耐老化性能和老化规律的手段．通过老化试验测定出不同老化龄期试样的抗拉强度、伸长率、侧向收缩率和弹性模量等，从而分析上述指标随老化龄期的变化情况，并与自然界实际老化一年后的结果做了比较，结论如下：采用高压汞灯加强光源能明显加速无纺布的老化；随老化龄期的增加，聚酯无纺布的颜色逐步变为灰白色，接近破坏时伴有粉末产生；抗拉强度、伸长率、侧向收缩率和弹性模量均随老化龄期的增加而降低，初期降幅较大，而后逐步趋向稳定．
As a kind of geosynthetic material, polyester non-woven fabrics have long-term durability. Aging test is a means to evaluate and study the aging resistance and aging regularity of various polymer materials in certain environments. Tensile strength, elongation, lateral shrinkage, and elastic modulus of the specimens at different aging ages were measured by an aging test to analyze the change of the above indexes with the age of aging, and one year after actual aging with nature. The results are compared and the conclusions are as follows: The use of a high-pressure mercury lamp to strengthen the light source can significantly accelerate the aging of the nonwoven fabric; as the aging age increases, the color of the polyester non-woven fabric gradually changes to grayish white, and the powder is generated when the destruction is close to that. The tensile strength, elongation, lateral shrinkage, and elastic modulus all decreased with the ageing age, the initial drop was larger, and then gradually stabilized.