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Norm

ISO 6721-2:2008

Issue date: 2008 05 26

Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method

ISO 6721-2:2008 specifies two methods (A and B) for determining the linear dynamic mechanical properties of plastics, i.e. the storage and loss components of the torsiona...
Withdrawn: 2019 04 29
Publisher:
International Organization for Standardization
Format:
Digital | 14 Pages
Language:
English
Currently valid:

ISO 6721-2:2008 specifies two methods (A and B) for determining the linear dynamic mechanical properties of plastics, i.e. the storage and loss components of the torsional modulus, as a function of temperature, for small deformations within the frequency range from 0,1 Hz to 10 Hz.

The temperature dependence of these properties, measured over a sufficiently broad range of temperatures (for example from -50 °C to +150 °C for the majority of commercially available plastics), gives information on the transition regions (for example the glass transition and the melting transition) of the polymer. It also provides information concerning the onset of plastic flow. The two methods described are not applicable to non-symmetrical laminates (see ISO 6721-3, Plastics — Determination of dynamic mechanical properties — Part 3: Flexural vibration — Resonance-curve method). The methods are not suitable for testing rubbers, for which the user is referred to ISO 4664-2, Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 2: Torsion pendulum methods at low frequencies.

ISO 6721-2:2019
2019 04 29
Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method
Norm
ISO 6721-2:2008
2008 05 26
Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method
Norm
ISO 6721-2:1994/Cor 1:1995
1995 03 16
Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method — Techni...
Norm
ISO 6721-2:1994
1994 11 03
Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method
Norm
ISO 537:1989
1989 11 30
Plastics — Testing with the torsion pendulum
Norm
ISO 537:1980
1980 03 01
Plastics — Testing with the torsion pendulum
Norm
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Norm
ISO 6721-2:2019
Issue date : 2019 04 29
Plastics — Determination of dynamic mechanical properties — Part 2: Torsion-pendulum method