RADIATOR HOSE RUBBER COMPOSITION FOR AUTOMOBILE WITH IMPROVED ELECTRO-CHEMICAL DEGRADATION CHARACTERISTIC AND ITS PREPARATION METHOD

摘要

PURPOSE: A radiator hose rubber composition for automobiles is provided to prevent electro-chemical degradation of a radiator hose generated by the traveling of automobiles, and to hold mechanical properties required for the radiator hose. CONSTITUTION: A radiator hose rubber composition for automobiles comprises 100.0 parts by weight of ethylene--olefin copolymer rubber, 150~250 parts by weight of filler, 100~150 parts by weight of plasticizer, 0.2~1 parts by weight of cross-linking agent, and 2~10 parts by weight of organic vulcanization accelerator. The filler comprises 80~120 parts by weight of carbon black, 30~60 parts by weight of calcined clay, and 40~70 parts by weight of calcium carbonate. The plasticizer is at least one selected from paraffin-based oil, paraffin-based wax, aromatic oil and naphthenic oil.