Experiments were conducted accordin

Experiments were conducted according
to DIN53516. In this test method, small cylindrical specimens
(16.0±0.2mm in diameter and minimum thickness of 6mm) are
abraded in pure sliding motion against a grade 60 corundum abrasive
cloth, covering a rotating cylinder (150±0.2mm and length
approximately 500 mm), rotating at (40±1) min−1. The specimen
holder arm moves parallel to the (horizontal) cylinder axis and
is loaded by a 1000 g mass, providing a contact normal force of
10±0.2 N. After an abraded distance of 40m is reached, the specimen
is automatically lifted from the equipment and weighted.
Three test specimens of each composition were tested. The volumetric
loss (mm3) = [(m×S0)/(×S)], where m=mass loss
(mg);  = density (mg/mm3); S0 = value of nominal abrasive power
(200 mg); S = average abrasive power (mg). S0 and S are obtained
from the calibration of the equipment with a standard rubber.