Ethylene propylene rubber is a kind of rubber with a lower density of 0.87. In addition, a large amount of oil can be filled and fillers can be added, which can reduce the cost of rubber products and make up for the high price of raw rubber of ethylene propylene rubber. In addition, for ethylene propylene rubber with high Mooney value, the physical and mechanical energy after high filling will not be reduced by much.

Epdm plastic is a terpolymer of ethylene, propylene and non conjugated dienes. it began commercial production in 1963. The annual consumption of the world is 800000 tons. The main characteristic of EPDM is its superior oxidation resistance, ozone resistance and corrosion resistance. As EPDM belongs to polyolefin family, it has excellent vulcanization characteristics. Of all rubbers, EPDM has the lowest specific gravity. It can absorb a large amount of filler and oil without affecting the characteristics. Therefore, a rubber compound with low cost can be prepared.