Irabha ye-EPDM (i-ethylene propylene diene monomer rubber) luhlobo lwerubha yokwenziwa esetyenziswa kwizicelo ezininzi.I-Dienes esetyenziselwa ukwenziwa kweerubha ze-EPDM yi-ethylidene norbornene (ENB), i-dicyclopentadiene (DCPD), kunye ne-vinyl norbornene (VNB).I-4-8% yala ma-monomers asetyenziswa ngokuqhelekileyo.I-EPDM yirubha ye-M-Class phantsi kwe-ASTM eqhelekileyo ye-D-1418;udidi lwe-M lubandakanya ii-elastomers ezinekhonkco elihluthisiweyo lohlobo lwe-polyethylene (i-M iphuma kwigama elichanekileyo ngakumbi i-polymethylene).I-EPDM yenziwe nge-ethylene, ipropylene, kunye ne-diene comonomer eyenza ukudibanisa nge-sulfur vulcanization.Isalamane sangaphambili se-EPDM yi-EPR, i-ethylene propylene rubber (eluncedo kwiintambo zombane eziphezulu ze-voltage), ezingaphumi kuyo nayiphi na i-diene precursors kwaye inokudityaniswa kuphela ngokusebenzisa iindlela ezikhawulezayo ezifana ne-peroxides.
Njengeerubha ezininzi, i-EPDM isoloko isetyenziswa idityaniswe nezihluzi ezifana nekhabhoni emnyama kunye ne-calcium carbonate, ezineplastiki ezifana neoyile yeparafini, kwaye ineempawu eziluncedo zerabha kuphela xa zidibene.I-Crosslinking iyenzeka kakhulu nge-vulcanisation kunye nesulfure, kodwa ikwaphunyezwa ngeeperoxides (ukumelana nobushushu obungcono) okanye nge-phenolic resins.Imitha ene-eneji ephezulu efana nemitha ye-electron ngamanye amaxesha isetyenziselwa ukuvelisa amagwebu kunye nocingo kunye nentambo.
Ixesha lokuposa: May-15-2023