【摘要】 目的 制备一种具有可恢复阻尼机制的聚氨酯-泡沫铝(PU-AF)减震复合材料，研究PU-AF减震复合材料的阻尼机制，泡沫铝体积质量对PU-AF静态压缩力学性能、吸能性能的影响。方法 将制备的PU-AF复合材料在万能材料试验机上进行单调循环压缩试验，由应力-应变曲线研究复合材料的阻尼机制和吸能性能。结果 当泡沫铝体积质量为0.70～0.85 g/cm~3时，在相同应变值下，随着泡沫铝体积质量的增加，PU-AF复合材料的屈服强度、弹性模量均增大。吸能效率在应变为30%以后有所降低，最佳吸能效率对应的应变为25%～35%。结论 聚氨酯可以显著提高复合材料的应变恢复率；PU-AF是一种很好的减震复合材料。更多还原

【Abstract】 To prepare a polyurethane/foam aluminum shock absorption composite(PU-AF)with recoverable damping mechanism.Study the damping mechanism of PU-AF shock-absorbing composite materials; The influence of foam aluminum bulk density on the static compression mechanical properties and energy absorption properties of PU-AF.The method involves conducting monotonic/cyclic compression tests on the prepared PU-AF composite material on a universal material testing machine, and studying the damping mechanism and energy absorption performance of the composite material through stress-strain curves.When the bulk density of foam aluminum was 0.70-0.85 g/cm~3,the yield strength and elastic modulus of PU-AF composites increased with the increase of the bulk density of foam aluminum at the same strain value.The energy absorption efficiency decreases after reaching a strain of 30%,and the optimal strain range for energy absorption efficiency is between 25% and 35%.Polyurethane can significantly improve the strain recovery rate of composite materials; PU-AF is a good shock-absorbing composite material.更多还原