ISO 3384-2:2019
Rubber, vulcanized or thermoplastic — Determination of stress relaxation in compression — Part 2: Testing with temperature cycling
Product Details
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.
Two forms of test pieces are specified in this document: cylindrical test pieces and rings. Comparison of results is valid only when made on test pieces of similar size and shape.
The use of ring test pieces is particularly suitable for the determination of stress relaxation in liquid environments.