This standard describes a compressive oscillatory non-resonant method for determining the compressive complex modulus E* component of polymers at representative frequencies in the range 0.01 to 100 Hz. This method is suitable for measuring the dynamic storage modulus of semi-rigid polymers in the range 1 MPa to 1 GPa (see Notes 1 and 2). This method measures the dynamic modulus and loss of semi-rigid plastics in the shape of right-angled columns, cylinders or tubes. It is particularly suitable for measuring coefficients and can be conveniently used to study changes in dynamic properties with temperature and frequency, mostly through the glass-rubber relaxation zone (see 9.4 of KS M ISO 6721-1). The availability of measured data over a wide range of frequencies and temperatures allows the frequency/temperature shift procedure to be used to plot master curves that display the dynamic characteristics over a wide frequency range at several temperatures.
KS M ISO 6721-12:2014 history
2019KS M ISO 6721-12-2019 Plastics — Determination of dynamic mechanical properties — Part 12: Compressive vibration — Non-resonance method
2014KS M ISO 6721-12:2014 Plastics — Determination of dynamic mechanical properties — Part 12: Compressive vibration — Non-resonance method