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BS ISO 23673:2021

BS ISO 23673:2021

$86.31

Plastics. Elasticity index. Determination of elastic property of melts

Published By Publication Date Number of Pages
BSI 2021 14
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This document specifies a procedure for the determination of an elasticity index based on measurements of the shear storage modulus using oscillatory rheometers, establishes general principles, and gives guidelines for performance of measurements. The elasticity index is applicable to all thermoplastics and viscoelastic materials for which the elastic behaviour is a crucial application property.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Measurement apparatus
10 5.2 Temperature-controlled enclosure
5.3 Temperature measurement and control
5.4 Plate/specimen assembly
5.5 Calibration
6 Sampling
7 Procedure
7.1 Test temperature
7.2 Zeroing the gap
7.3 Introducing the test specimen
7.4 Conditioning the test specimen
7.5 Test mode (controlled stress or controlled strain)
11 7.6 Determination of thermal stability of sample material
7.7 Determination of region of linear-viscoelastic behaviour
7.7.1 In the controlled-strain mode
7.7.2 In the controlled-stress mode
7.7.3 Confirmation of linear-viscoelastic behaviour
7.8 Air entrapment
8 Expression of results
12 9 Test report
13 Bibliography

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BS ISO 23673:2021
$86.31