ETHYLENE PROPYLENE DIENE MONOMER (M-CLASS) RUBBER COMPOSITION FOR AIR INTAKE HOSE

摘要

PURPOSE: An EPDM rubber composition is provided to have excellent oil resistance, negative pressure resistance, vibration resistance, etc, thereby not discharging harmful hydrochloric acid, etc. CONSTITUTION: An EPDM rubber composition comprises 200-250 parts by weight of carbon black, 0,3-0.8 parts by weight of sulfur, and as a vulcanization accelerator, 0.5-1 parts by weight of dipentamethylenethiuram tetrasulfide, 0.5-1 parts by weight of zinc di-n-butyldithiocarbamate, 0.5-1 parts by weight of tetramethyl-thiuram disulfide and 1.5-2.5 parts by weight of 2-mercaptobenzothiazole, and as a plasticizer 50-60 parts by weight of a paraffin oil and 50-60 parts by weight of ester oil, and as an antioxidant, 1-2.5 parts by weight of -dimethylbenzyl-diphenylamine 1-2.5 parts by weight of 2-mercaptobenzoimidazole and 1-2.5 parts by weight of trimethyl dihydroquinoline polymer, on the basis of 175 parts by weight of EPDM rubber containing oil.