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Homepage>BS 2782-3:Method 323C:1996 Methods of testing plastics Mechanical properties
sklademVydáno: 2007-03-30
BS 2782-3:Method 323C:1996 Methods of testing plastics Mechanical properties

BS 2782-3:Method 323C:1996

Methods of testing plastics Mechanical properties

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Označení normy:BS 2782-3:Method 323C:1996
Počet stran:12
Vydáno:2007-03-30
ISBN:0 580 26066 6
Status:Standard
DESCRIPTION

BS 2782-3:Method 323C:1996


This standard BS 2782-3:Method 323C:1996 Methods of testing plastics is classified in these ICS categories:
  • 83.080.01 Plastics in general

This part of ISO 6721 describes a forced, non-resonance method for determining the components of the shear complex modulus G* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. 30162224_img1 Higher-frequency measurements can be made, but significant errors may be obtained in the dynamic properties measured (see 10.2.1 and 10.2.2). 30162224_img2 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 dynamic 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 frequency range at different temperatures.