基于低密度聚乙烯的纳米复合薄膜的弹性和粘性性能。

Elastic and viscous properties of nanocomposite films based on low-density polyethylene.

出版信息

IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Sep;57(9):2099-102. doi: 10.1109/TUFFC.2010.1658.

DOI:10.1109/TUFFC.2010.1658

PMID:20875999

Abstract

The physical properties of nanocomposite materials which contain nanoparticles of metals and their compounds stabilized within a polymeric dielectric matrix are currently being studied. These materials show a low acoustic impedance, resulting in their use as low-perturbing substrates for thin piezoelectric plates, as well as matching and damping layers for bulk acoustic wave devices. Mechanical properties of the materials which contain various Fe and Fe2O3 nanoparticle concentrations are experimentally defined in the paper. It has been shown that the acoustic impedance of the materials under study may be varied by more than 30% and 40% for longitudinal and shear acoustic waves, respectively, within the same technological procedure. The velocities of bulk longitudinal and shear acoustic waves can be purposefully changed by more than 40% and 29%, respectively.

摘要

目前正在研究含有金属及其化合物纳米颗粒并稳定在聚合物介电基体中的纳米复合材料的物理性质。这些材料表现出低的声阻抗，因此可用作薄压电板的低干扰衬底，以及体声波器件的匹配和阻尼层。本文实验确定了含有不同 Fe 和 Fe2O3 纳米颗粒浓度的材料的机械性能。结果表明，在相同的工艺条件下，研究材料的纵波和横波的声阻抗分别可以变化超过 30%和 40%。体纵波和横波的速度可以分别有目的地改变超过 40%和 29%。