尼龙材料的纳米硬度及纳米动态力学性能

Nano-Hardness and Nano-Dynamic Mechanics Properties of Nylon Materials

采用原位纳米力学测试系统TriboIndenter对尼龙1010进行了纳米硬度测试和纳米动态力学性能测试.研究了载荷和频率对储存模量和损耗模量的影响.研究结果表明,尼龙1010的纳米硬度和弹性模量呈现出明显的尺寸效应,尼龙1010的纳米动态力学性能具有明显的黏弹性.动态储存模量随着载荷和频率的增加而呈线性增长,但动态储存模量对频率更加敏感;而损耗模量则随着载荷的增加呈正弦规律波动,随着频率的增加呈抛物线变化,且损耗模量对频率更加敏感.

Nano-hardness and nano-dynamic mechanics properties were tested to investigate the storage modulus and the loss modulus of nylon 1010 with functions of applied loads and loading frequency using the in situ nanomechanical testing system Tribolndenter. The results show that the nylon 1010 exhibits an indentation size effect on nano-hardness and elastic modulus. The dynamical storage modulus increases linearly with the applied loads and the loading frequency, while the loss modulus changes with applied loads in sine form, and with frequency in parabola regular pattern. Moreover, the storage modulus and the loss modulus are more sensitive to the frequency than to the applied loads, reflecting the viscoelasticity of polymer.