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
This part of ISO 6721 describes a forced, non-resonance method for determining the components of thetensile complex modulus E* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. The methodis suitable for measuring dynamic storage moduli in the range 0,01 GPa to 5 GPa. Although materials withmoduli 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 orISO 6721-5)].This method is particularly suited to the measurement of loss factors greater than 0,1 and may therefore beconveniently used to study the variation of dynamic properties with temperature and frequency through mostof the glass-rubber relaxation region (see ISO 6721-1:2001, Subclause 9.4). The availability of datadetermined over wide ranges of both frequency and temperature enables master plots to be derived, usingfrequency-temperature shift procedures, which display dynamic properties over an extended frequency rangeat different temperatures.
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