Mpempe akwụkwọ eydm (nke etylene profane diene roonoman roba) bụ ụdị roba rot na-eji ya n'ọtụtụ ngwa. Diendes ejiri na-emepụta EPDM Rubbes bụ yllidone nelidene (ENB), dobyclopentadine (DCPD), na vinyl Norginene (VNB). 4-8% nke ndị a monomers na-ejikarị. EPDDM bụ rọba m - rọba na-acha uhie uhie n'okpuru ASTM Standard D-1418; Thelọ akwụkwọ m na-eme ihe ochie nwere ọtụtụ ụdị polyethylene ụdị (nke m na-enwe site na okwu okwu ziri ezi nke polymethhethylene karie). EPDM na-eme site na ethylene, proplene, na a dine comimer nke na-eme ka overlinking vigharịa site na sọlfọ site na sọlfọ. Onye ikwu mbụ nke EPDM bụ EPDM, nke etylene roo (bara uru maka eriri eletrik), nke a anaghị enweta site na ndị na-eme ihe ọ bụla dị elu ma nwee ike iji ụzọ dị ka peroxides.
Dị ka ndị na-eje ozi, Epdm na-ejikọ ya na ndị na-eme ihe dị ka carbon ojii na calbon ojii, ma nwee ọkpụrụkpụ ọfụma naanị mgbe ị na-agagharị. Na-agagharị na-ewere ọnọdụ na sọlfọ, mana a na-arụpụta ya na peroxides (maka nguzogide okpomoku dị mma) ma ọ bụ na phenalic resins. A na-eji radieshon dị elu dị ka site na osisi elektrọn maka ịmepụta ụfụfụ na waya na eriri.
Oge Post: Mee-15-2023