BS 2782-3 Method 323B:1996
塑料试验方法.机械性能.弯曲振动.非共振法

Methods of testing plastics - Mechanical properties - Flexural vibration - Non-resonance method

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标准号

BS 2782-3 Method 323B:1996

发布

1996年

发布单位

英国标准学会

当前最新

BS 2782-3 Method 323B:1996

 

 

引用标准

ISO 6721-1:1994 ISO 6721-6:1996

被代替标准

94/341467 DC-1994

适用范围

This part of ISO 6721 describes a flexural, non-resonance method for determining the components of the Young's complex modulus E 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 10 MPa to 200 GPa. Although materials with moduli less than 10 MPa may be studied, more accurate measurements of their dy-namic properties can be made using shear modes of deformation (see part 6 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 present dynamic properties over an extended fre-quency range at different temperatures.

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