标准摘要
[中文适用范围]： 该文件描述了一种弯曲、非共振方法，用于确定聚合物在频率通常在 0.01 Hz 至 100 Hz 范围内的弯曲复数模量 Ef* 的分量。 可以进行更高频率的测量，但可能会导致测量的动态特性出现重大误差（见 10.2.2 和 10.2.3）。 该方法适用于测量10 MPa至200 GPa范围内的动态储能模量。 注：虽然可以研究模量小于 10 MPa 的材料，但可以使用变形剪切模式对其动态机械特性进行更准确的测量（参见 ISO 6721-6）。 该方法特别适合测量大于 0.02 的损耗因数，因此可以方便地用于研究大部分玻璃橡胶松弛区域的动态特性随温度和频率的变化（参见 ISO 6721-1）。 在较宽的频率和温度范围内确定的数据的可用性使得能够使用频率/温度变换程序导出主图，该程序在不同温度下的扩展频率范围内呈现动态特性。 [外文原描述]： This document describes a flexural, non-resonance method for determining the components of the flexural complex modulus Ef* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. Higher-frequency measurements can be made, but significant errors in the dynamic properties measured are likely to result (see 10.2.2 and 10.2.3). The method is suitable for measuring dynamic storage moduli in the range 10 MPa to 200 GPa. NOTE Although materials with moduli less than 10 MPa can be studied, more accurate measurements of their dynamic-mechanical properties can be made using shear modes of deformation (see ISO 6721-6). This method is particularly suited to the measurement of loss factors greater than 0,02 and can therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region (see ISO 6721‑1). The availability of data determined over wide ranges of both frequency and temperature enables master plots to be derived, using frequency/temperature shift procedures, which present dynamic properties over an extended frequency range at different temperatures.
英文名称Plastics — Determination of dynamic mechanical properties — Part 5: Flexural vibration — Non-resonance method