ISO 6721-4:2019 塑料 动态机械性能的测定 第4部分：拉伸振动 非共振法

标准编号：ISO 6721-4:2019

中文名称：塑料 动态机械性能的测定 第4部分：拉伸振动 非共振法

英文名称：Plastics — Determination of dynamic mechanical properties — Part 4: Tensile vibration — Non-resonance method

发布日期：2019-05

标准范围

本文件描述了一种强制、非共振方法，用于测定频率通常在0.01 Hz至100 Hz范围内的聚合物拉伸复合模量E*的成分。注:可以进行更高频率的测量，但测量的动态特性可能会产生重大误差（见10.2.2和10.2.3）。该方法适用于测量0.01 GPa至5 GPa范围内的动态存储模量。虽然可以研究模量不在该范围内的材料，但为了获得更高的精度，可以使用其他变形模式[i。e、 G′<；0.01 GPa（见ISO 6721-6）和E′>；5 GPa（见ISO 6721-3或ISO 6721-5）]。该方法特别适用于损耗系数的测量，因此可以方便地用于研究大多数玻璃橡胶松弛区的动态特性随温度和频率的变化（见ISO 6721-1）。在频率和温度的大范围内确定的数据的可用性使得可以使用频率-温度偏移程序来导出主图，该程序在不同温度下显示扩展频率范围内的动态特性。

This document describes a forced, non-resonance method for determining the components of the tensile complex modulus E* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz.NOTE 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 0,01 GPa to 5 GPa. Although materials with moduli outside this range can be studied, alternative modes of deformation are intended to be used for higher accuracy [i.e. a shear mode for G′ < 0,01 GPa (see ISO 6721-6) and a flexural mode for E′ > 5 GPa (see ISO 6721-3 or ISO 6721-5)].This method is particularly suited to the measurement of loss factors 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 display dynamic properties over an extended frequency range at different temperatures.

标准预览图