Rubber Process Analyser, RPA (e.g. Payne effect)

The RPA (Rubber Process Analyser) is a dynamic mechanical rheological tester developed to analyse raw elastomers and unvulcanised compounds. The machine can make measurements up to 230°C, from 0.02 to 50 Hz and from 1 tot 1250% elongation. It is often used to determine the Payne effect, amongst other things.

 

The Payne effect is the difference in modulus at relatively low elongation rates. The difference is caused by 'filler-filler interaction'. During mixing, the filler should be dispersed homogeneously through the compound, which indicates a break-up of agglomerates into primary particles, resulting in a filler network within the polymer network.

 

For example, silica has a higher filler-filler interaction than carbon black.

 

The test is carried out according to the ERT inhouse method 403 unless otherwise desired.

 

Interested in the Rubber Process Analyser (RPA) and the Payne effect?

Please visit our contact page or fill out the "Ask us a question" form for more information about the Rubber Process Analyser (RPA) and the Payne effect.

 

 

 

Ask us a question