BS 2782-3 Method 323C:1996
Methods of testing plastics. Mechanical properties. Shear vibration. Non-resonance method

Standard No.

BS 2782-3 Method 323C:1996

Release Date

1996

Published By

British Standards Institution (BSI)

Latest

BS 2782-3 Method 323C:1996

Scope

This part of ISO 6721 describes a forced, non-resonance method for determining the components of the shear complex modulus G of polymers at fre-quencies typically in the range 0,01 Hz to 100 Hz. The method is suitable for measuring dynamic storage moduli in the range 0,1 MPa to 50 MPa. Although materials with moduli greater than 50 MPa may be studied, more accurate measurements of their dy-namic shear properties can be made using a torsional mode of deformation (see parts 2 and 7 of ISO 6721). This method is particularly suited to the measurement of loss factors greater than 0,1 and may therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region (see ISO 6721-1:1994, subclause 9.4). The availability of data determined over wide ranges of both frequency and temperature enables master plots to be derived, using frequency/temperature shift procedures, which display dynamic properties over an extended fre-quency range at different temperatures.

BS 2782-3 Method 323C:1996 history

• 1996 BS 2782-3 Method 323C:1996 Methods of testing plastics. Mechanical properties. Shear vibration. Non-resonance method