空间环境对聚氨酯涂覆织物力学性能影响试验研究

Experimental study of space environmental effects on the degradation of mechanical properties of polyurethane coated fabric

试验研究了模拟空间环境对聚氨酯涂覆织物力学性能的影响。结果表明:单面涂覆聚氨酯芳纶复合材料力学性能在高温、低温下降低;湿热、高低温交变和复合环境对其力学性能影响不明显。双面涂覆聚氨酯尼龙纤维力学性能在低温下明显增强,在高温、湿热环境下降低;高低温交变和复合环境对其力学性能影响不明显。

This paper experimentally studies the mechanical properties of polyurethane coated fabric in the simulated space environment.It is shown that,in high and low temperatures,the mechanical properties of oneside coated polyurethane aramid fibric are degradated;its tensile strength changes little in the high-and lowtemperature cycling,the damp heat,and the sequentially-acted combined environment.The tensile properties of the double-coated polyurethane nylon fabric are improved in the low temperature,and degradated in the high temperature and damp heat environment;the high-and low-temperature cycling,and the combined environment has no significant influence.