ISO 6721-4:2008 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 6721-4:2008

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：2008-05

标准范围

ISO 6721-4:20 08描述了用于在通常在0.01 Hz至100Hz范围内的频率下测定聚合物的拉伸复模量E*的分量的强制非共振方法。该方法适用于测量0.01 GPa至5 GPa范围内的动态储能模量。尽管可以研究模量超出该范围的材料，但替代变形模式应产生更高的精度【即E′<0.01 GPa的剪切模式（参见ISO 6721？6）和E′>5 GPa的弯曲模式（参见ISO 6721？3或ISO 6721？5）】。该方法特别适合于测量大于0.1的损耗因子，因此可以方便地用于研究通过大部分玻璃-橡胶弛豫区的动态特性随温度和频率的变化。在宽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-温度偏移程序，显示不同温度下扩展频率范围内的动态特性。

ISO 6721-4:2008 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. 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 may be studied, alternative modes of deformation should yield higher accuracy [i.e. a shear mode for E' < 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 greater than 0,1 and may therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region. 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