EPDM roba (ethylene propylene diene monomer rubber) bụ ụdị rọba sịntetịt nke a na-eji n'ọtụtụ ngwa.Dienes eji emepụta rubber EPDM bụ ethylidene norbornene (ENB), dicyclopentadiene (DCPD), na vinyl norbornene (VNB).A na-ejikarị 4-8% nke monomers ndị a.EPDM bụ rọba M-Class n'okpuru ọkọlọtọ ASTM D-1418;Klas M gụnyere elastomers nwere yinye juru eju nke ụdị polyethylene (M na-enweta site na okwu polymethylene ziri ezi karị).Emere EPDM site na ethylene, propylene, na diene comonomer nke na-enyere aka ịgafe site na sọlfọ vulcanization.Onye ikwu mbụ nke EPDM bụ EPR, ethylene propylene roba (bara uru maka eriri eletrik dị elu), nke na-esiteghị na ihe ọ bụla diene precursors na enwere ike ijikọ ya naanị site na iji ụzọ radicals dị ka peroxides.
Dị ka ọ dị n'ọtụtụ rọba, a na-eji EPDM eme ihe mgbe niile na ihe ndị dị ka carbon ojii na calcium carbonate, yana ndị na-emepụta plastik dị ka mmanụ paraffin, ma nwee ihe eji eme rọba bara uru naanị mgbe ejikọtara ya.Crosslinking na-emekarị site na vulcanisation na sọlfọ, ma a na-arụkwa ya na peroxides (maka nguzogide okpomọkụ ka mma) ma ọ bụ na resins phenolic.A na-eji ụzarị ọkụ dị elu dị ka site na ebili mmiri eletrọn mgbe ụfọdụ maka imepụta ụfụfụ na waya na eriri.
Oge nzipu: Mee-15-2023