聚氨酯-泡沫铝复合材料的性能研究
Preparation and Properties of Polyurethane/Aluminum Foam Composites
刘运学 1贾旭 1范兆荣 1谷亚新 1王晓丹1
作者信息
- 1. 沈阳建筑大学材料科学与工程学院,辽宁沈阳 110168
- 折叠
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/cm3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.
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/cm3,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.
关键词
聚氨酯/开孔泡沫铝/体积质量/应变恢复率/吸能特性Key words
polyurethane/open-cell aluminum foam/volume density/strain recovery rate/energy absorption characteristics引用本文复制引用
出版年
2024
NETL
NSTL
万方数据