Limits of the linear viscoelastic behaviour of polyamide 66 filled with TiO(2) nanoparticles: Effect of strain rate, temperature, and moisture

作者：Starkova Olesja^*; Zhang Zhong; Zhang Hui; Park Hyung Woo

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2008, 498(1-2): 242-247.

DOI：10.1016/j.msea.2008.07.065

• Polymer nanocomposite
• Linear viscoelasticity
• Stress limit
• Energy limit

Limits of linear viscoelastic behaviour of TiO(2) nanoparticle-filled polyamides are estimated quantitatively by the results of uniaxial tension tests. The stress limit of the filled polymer is higher than that of the unfilled one. Their values are the lower, the higher the temperature and moisture content of test specimens, and the lower, the lower the strain rate. The concept of an energy threshold for the linear viscoelastic behaviour is used to comprehensively characterize the limits over a wide range of test conditions. The energy limit is not affected by the strain rate, temperature, or moisture, and its value for the filled polymer is higher than that for the un-filled one. When plotted in the stress-strain axes, the data for different test conditions fall on a common curve described by a quasi-linear energy function. The higher the energy, the wider the region of the linear viscoelastic behaviour.

• 出版日期2008-12-20
• 单位国家纳米科学中心