原子氧、紫外辐照对锦纶材料力学性能影响试验研究

航天器在低地球轨道运行期间，空间环境中的原子氧与紫外辐照均会对非金属材料的力学性能造成影响。文章以锦纶材料为研究对象，探讨锦纶材料2种缝制结构形式在原子氧与紫外辐照协同作用下的力学强度性能变化，试验结果表明:在紫外辐照作用下材料会发生明显的褪色；紫外辐照和原子氧均会降低锦纶材料的断裂强力；原子氧与紫外辐照协同作用对单层锦纶材料的力学性能破坏具有加强效果；紫外辐照对多层锦纶材料的穿透性弱；经向结构缝制试验件的力学性能表现更优。

Experimental study on synergistic effect of atomic oxygen and ultraviolet irradiation on mechanical properties of nylon materials

Both the atomic oxygen and the ultraviolet irradiation in space affect the mechanical properties of the non-metallic materials being used. Materials in spacecraft are subjected to the combined effects of the space environment during their operation in orbit. This paper studies the nylon material and its different structural forms under the synergistic effects of the atomic oxygen and the ultraviolet irradiation. The test results show that the material will degrade greatly under the action of the ultraviolet radiation and the atomic oxygen; the synergistic effect of the atomic oxygen and the ultraviolet radiation has a damaging effect on the mechanical properties of nylon single-layer materials; the penetration resistance of multi-layer nylon is weakened by the ultraviolet irradiation. The mechanical properties of two typical structural types of nylon fabric materials under the synergistic effect of the atomic oxygen and the ultraviolet radiation are analyzed. Better mechanical properties of the ‘warp structure’ test pieces are found.