ISO 6721-9:2019 PDF

Scope: This document describes a pulse propagation method for determining the storage component of the complex tensile modulus E' of polymers at discrete frequencies typically in the range 3 kHz to 10 kHz. The method is suitable for measuring materials with storage moduli in the range 0,01 GPa to 200 GPa and with loss factors below 0,1 at around 10 kHz. With materials having a higher loss, significant errors in velocity measurement are introduced through decay of amplitude. The method allows measurements to be made on thin films or fine fibres and long specimens, typically tapes of 300 mm × 5 mm × 0,1 mm or fibres of 300 mm × 0,1 mm (diameter). This method may not be suitable for cellular plastics, composite plastics and multilayer products.

ISO 6721-9:2019 Referenced Document

ISO 1183-1 Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion method, liquid pycnometer method and titration method
ISO 1183-2 Plastics — Methods for determining the density of non-cellular plastics — Part 2: Density gradient column method
ISO 1183-3 Plastics - Methods for determining the density of non-cellular plastics - Part 3: Gas pyknometer method
ISO 6721-1 Plastics — Determination of dynamic mechanical properties — Part 1: General principles*， 2019-04-29 Update

2019 ISO 6721-9:2019 Plastics — Determination of dynamic mechanical properties — Part 9: Tensile vibration — Sonic-pulse propagation method
2007 ISO 6721-9:1997/Amd 1:2007 Plastics - Determination of dynamic mechanical properties - Part 9: Tensile vibration - Sonic-pulse propagation method; Amendment 1: Precision
1997 ISO 6721-9:1997 Plastics - Determination of dynamic mechanical properties - Part 9: Tensile vibration - Sonic-pulse propagation method