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ILNAS-EN ISO 6721-2:2019
Edition
05/2019
Plastics - Determination of dynamic mechanical properties - Part 2: Torsion-pendulum method (ISO 6721-2:2019)
Plastics - Determination of dynamic mechanical properties - Part 2: Torsion-pendulum method (ISO 6721-2:2019)
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Abstract
This document 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.
NOTE The temperature dependence of these properties, measured over a sufficiently broad range of temperatures (for example from −50 °C to +150 °C for most 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). The methods are not suitable for testing rubbers, for which the user is referred to ISO 4664-2.
Status
| Standard - Active |
Origin
| Technical Committee : |
| CEN/TC 249 : Plastics |
Implementation
| start of the vote on the project | 15/02/2018 | date of ratification (dor) | 08/06/2018 | |||
| end of the vote on the project | 07/05/2018 | date of anouncement (doa) | 31/08/2019 | |||
| start of the vote on the final project | 15/04/2019 | date of publication (dop) | 30/11/2019 | |||
| end of the vote on the final project | 11/06/2019 | date of withdrawal (dow) | 30/11/2019 |
|
Publication Official Journal
of the Grand-Duchy of Luxembourg |
18/06/2019 |
| Reference | Mémorial A N° 420 |
Relations
| Relations to older standards |
| ILNAS-EN ISO 6721-2:2008 |
| Relations to international standards |
| ISO 6721-2 |
| ISO 6721-2:2019 |
International Classification for Standards (ICS codes) :
| 83.080.01 : Plastics in general |
