Epdm Rubber Coefficient Of Friction

The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it.

Epdm rubber coefficient of friction.

The friction coefficient cof of the epdm seal and plate was not experimentally measured and is therefore unknown in this study. F f μ n 1. Rubber epdm was measured in an oscillating rolling ball steel on plate rubber configuration oscillating rbop and simulated by fem. Both cof and wear rates of the epdm mixes strongly depended on the test configurations.

The rubber stocks were prepared in a laboratory internal mixer and the curatives were introduced on a laboratory open mill. The maximum force of static friction can be calculated by multiplying the normal force by the coefficient of friction specific to the pair of materials in contact. N normal force between the surfaces n lb there are at least two types of friction forces. The frictional force can be expressed as.

The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. The coefficient of frictions cof and specific wear rates of the epdms were determined. F f frictional force n lb. A similar tendency was found for the cof in rop tests.

μ static μ s or kinetic μ k frictional coefficient. Hardness shore a polymer compound type coefficient of friction. The resistance to polar substances and steam are also good. Bowden tabor the friction and lubrication of solids oxford.

Dry steel dry steel 0 70 0 57 0 80. Further aim of this work was to investigate on how the friction and wear properties of the epdm rubbers depend on the configuration of the testing rigs. Dry rubber dry steel 0 80 0 76 0 95 dry rubber greasy steel 0 80 0 76 0 95. Static friction results from the normal force of two objects in contact acting opposite the intended motion of one surface against the other.

For example static friction can prevent an object from sliding down a sloped surface. It was found that with increasing cb content the specific wear rate was reduced. Fric tion force normal load and coefficient of friction cof were determined. Studies in the literature suggest that the cof between a dry epdm.

In the present work friction and sliding wear behaviors of indigenously developed ethylene propylene diene monomer rubber epdm of different hardness have been studied against steel counterpart in dry condition. Epdm rubber has a common use as seals in automobiles.