EPDM Hrabara (Ethylene Prognyneene monomer rabar) ndi mtundu wa mphira wopangidwa womwe umagwiritsidwa ntchito pamapulogalamu ambiri. Dienes omwe amagwiritsidwa ntchito popanga rubbers epdmm ndi ethylidene kapena exblopnediene (DCPCLLOPREDIDEE (DCPD), ndi Vinyl Norbornene (VNBD). 4-8% ya monomers awa nthawi zambiri amagwiritsidwa ntchito. EPDM ndi mphira wa M-Chovala Mgwirizano Pansi pa Assorm Standard D-1418; Kalasi ya m m imakhala ndi elastomers okhala ndi mtundu wa polyethylene (woyenda kuchokera ku mawu olondola kwambiri) polymethylene). EPDM imapangidwa kuchokera ku Ethylene, Propylene, komanso wokongoletsa ufa womwe umapangitsa kupanikizika kudzera pa sulufur Vulcananiza. Wachibale woyamba wa Epdm ndi EPR, a Ethylene Prography (zothandiza pa zingwe zamagetsi zamagetsi), zomwe sizichokera ku dientne iliyonse ndipo imatha kudutsa njira zosinthika monga peroxide.
Monga ndi rubbbors ambiri, epdm imagwiritsidwa ntchito nthawi zonse ndi mafilimu monga carborm wakuda ndi calcium carbonate, ndi ma pulasitiki monga mafuta a paraffinic pokhapokha atayatsidwa. Kudutsa kwambiri kumachitika kudzera pa Vulcanation ndi sulufule, koma kumachitikanso ndi ma peroxirs (pokana kutentha kwa Phenolic. Magetsi okwera kwambiri monga kuchokera ku mitengo ya electron nthawi zina imagwiritsidwa ntchito popanga zikopa ndi waya ndi chingwe.
Post Nthawi: Meyi-15-2023