Opt. reinforced power transmission belt - prepd. from castable rubber elastic compsn. with high-density inert additive

摘要

Oot. reinforced power-transmission belts consist of a castable rubber-elastic plastic mixt. contg. 2-50 vol.% added inert material, (A), having density at least 3. (A) can be 5-25 vol.% metal powder; or a metal oxide, e.g. TiO2, Fe- or Pb oxide (PbO), etc.; or BaSO4. (A) have microscopic particle size and are distributed with adhesive bonding in the surrounding plastic mixt.. The belts are esp. polyurethane cogged flat belts. Article density is increased 2-3 times, whereby frequency is displaced and noise level is reduced.