Rubber Balls

Rubber Means Variety

Nowadays, we encounter rubber in practically every area of our lives in a vast number of different applications.

Since its discovery by Bayer chemist Fritz Hofmann (at the beginning of the last century), synthetic rubber has enriched and shaped modern-day living worldwide.

There‘s good reason for this success. The many different demands made on rubber components are only matched by the equally numerous and diverse performance profiles of synthetic rubber products.

To achieve a specific objective with rubber, it is vital to select the right raw rubber and the perfect combination of additives for the job.


WHY DOES THE BLUE BALL BOUNCE AND THE RED ONE DOESN'T?

The rebound height of a ball depends on the amount of energy which is dissipated during the contact of the ball with the floor. A greater energy dissipation reduces the rebound height.

The loss factor tan δ correlates with the dissipated energy for deformations under constant energy (identical initial height).

A lower loss factor therefore indicates a higher rebound height.

Since the loss factor tan δ of a polymer is influenced by the relaxation of chain segments of the polymer, the rebound height of a rubber ball reflects the mobility of the chains in the polymer.

MEASUREMENT AND INTERPRETATION

If the frequency range of the measurement corresponds to the contact time of the ball with the floor, the rebound behavior can be deduced from a frequency dependent measurement of the loss factor tan δ at ambient temperature (Heat the red ball and try again!).

This is just one example of what we can tell you about our polymers and their properties.