ISO 3384-2:2012
Rubber, vulcanized or thermoplastic — Determination of stress relaxation in compression — Part 2: Testing with temperature cycling
ISO 3384-2:2012 specifies two methods for determining the decrease in counterforce exerted by a test piece of vulcanized or thermoplastic rubber which has been compressed to a constant deformation and then undergoes temperature cycling.
Method A: The temperature is cycled at intervals between a high temperature for ageing and a low temperature for checking the sealing force at this low temperature.
Method B: The temperature is cycled continuously between a high temperature and a low temperature to introduce thermal stress in the test piece.
The counterforce is determined by means of a continuous-measurement system.
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Table tab_a
Figure fig_1
Table tab_b
Figure fig_2
Table tab_d
Figure fig_3
Table tab_A.1
Reference ref_1
Reference ref_2
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Calibration
7 Test piece
7.1 Type and preparation of test piece
7.2 Measurement of dimensions of test pieces
7.3 Number of test pieces
7.4 Time interval between forming and testing
7.5 Conditioning of test pieces
8 Duration, temperature and test liquid
8.1 Duration of test
8.2 Temperature of exposure
8.3 Immersion liquids
9 Procedure
9.1 Preparation
9.2 Thickness measurement
9.3 Method A
9.4 Method B
10 Expression of results
11 Precision
12 Test report
Annex A (normative) Calibration schedule
Bibliography
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Table tab_a
Figure fig_1
Table tab_b
Figure fig_2
Table tab_d
Figure fig_3
Table tab_A.1
Reference ref_1
Reference ref_2
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Calibration
7 Test piece
7.1 Type and preparation of test piece
7.2 Measurement of dimensions of test pieces
7.3 Number of test pieces
7.4 Time interval between forming and testing
7.5 Conditioning of test pieces
8 Duration, temperature and test liquid
8.1 Duration of test
8.2 Temperature of exposure
8.3 Immersion liquids
9 Procedure
9.1 Preparation
9.2 Thickness measurement
9.3 Method A
9.4 Method B
10 Expression of results
11 Precision
12 Test report
Annex A (normative) Calibration schedule
Bibliography