ISO 12493:2023 PDF

Scope: This document describes two methods for measuring stress in tension under non-isothermal conditions. — Method A: The thermal stress is measured for various pre-strain and temperature conditions as a function of time. — Method B: The change of stress is measured in a test piece at a given strain and under variation of temperature at a given heating rate as a function of temperature. In this way, the determination of the thermal-mechanical behaviour of a rubber can be accelerated, e.g. for the purpose of comparative testing of aging or estimating the upper limit of the operating temperature. The measurement device, which is equipped with a suitable heating chamber, is used to record the stress as a function of time or temperature until the sample breaks or the stress has approached zero or for a certain time.

ISO 12493:2023 Referenced Document

ISO 18899:2013 Rubber - Guide to the calibration of test equipment
ISO 188:2011 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests
ISO 23529 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
ISO 5893 Rubber and plastics test equipment — Tensile, flexural and compression types (constant rate of traverse) — Specification — Amendment 1

2023 ISO 12493:2023 Rubber, vulcanized or thermoplastic — Determination of stress in tension under non-isothermal conditions
2017 ISO 12493:2017 Rubber, vulcanized — Determination of stress in tension upon heating
2011 ISO 12493:2011 Rubber, vulcanized - Determination of stress in tension upon heating