This International Standard specifies the principles and procedures for estimating the thermal endurance of rubbers from the results of exposure to elevated temperatures for long periods.
Two approaches are specified (see also the Introduction):
— one using the Arrhenius relation;
— the other using the WLF equation.
In this document, the estimation of thermal endurance is based solely on the change in selected properties resulting from periods of exposure to elevated temperatures. The various properties of rubbers change at different rates on thermal ageing, hence comparisons between different rubbers can only be made using the same properties.
ISO 11346:2004 history
2023ISO 11346:2023 Rubber, vulcanized or thermoplastic — Estimation of life-time and maximum temperature of use
2014ISO 11346:2014 Rubber, vulcanized or thermoplastic - Estimation of life-time and maximum temperature of use
2004ISO 11346:2004 Rubber, vulcanized or thermoplastic - Estimation of life-time and maximum temperature of use
1997ISO 11346:1997 Rubber, vulcanized or thermoplastic - Estimation of life-time and maximum temperature of use from an Arrhenius plot