Standard Test Method for Rubber—Stress Relaxation in Tension Under Non-Isothermal Conditions

Importancia y uso:

5.1 Non-isothermal stress relaxation, also known as temperature scanning stress relaxation, performed at a specific heating rate, delivers a set of parameters useful to specify the properties of thermo-plastic elastomers. It can also characterize the deterioration of the cross-linked rubber network in a reasonable testing time of a few hours.

5.2 Stress relaxation tests are typically performed as time-dependent experiments at constant strain and temperature. It is known that temperature has a strong influence on the relaxation time of rubber. When evaluating ageing behavior such as deterioration of the network, a reliable test using isothermal stress relaxation requires extremely long testing times, for example, days or weeks depending on the application.

Subcomité:

D11.10

Volúmen:

09.01

Número ICS:

83.140.01 (Rubber and plastics products in general)

Palabras clave:

force decay; stress relaxation; TSSR;