I-Silicone irabha eluhlaza iyinto eqinisayo yerabha ehlanganisiwe. Izakhiwo zenjoloba eyinhlanganisela eyenziwe ngezinhlobo ezahlukene zenjoloba eluhlaza ziyahlukahluka
kakhulu. Izidingo zenjoloba eluhlaza ziyahlukahluka phakathi kwezinhlobo ezahlukene zenjoloba ehlanganisiwe.Izakhiwo eziyisisekelo zenjoloba eluhlaza zinqunywa izinkomba ezintathu: i-molar mass, okuqukethwe kwe-vinyl kanye nendaba eguquguqukayo.
Ngesikhathi sokucutshungulwa, irabha eluhlaza enezisindo zamangqamuzana ahlukene kanye nokuqukethwe kwe-vinyl ivame ukusetshenziswa ngokuhlangene ngesilinganiso esithile. Ukuphakama kokuqina komkhiqizo, kuyaphezulu okuqukethwe kwe-vinyl yerabha eluhlaza edingekayo. Indaba eguquguqukayo ngokuvamile idingeka ukuthi ibe ngokulinganisela (1% kuya ku-2%). Uma indaba eguquguqukayo iphezulu kakhulu, i-compound yerabha izonamathela futhi ukusebenza kwayo kuzokwehla, kanti uma indaba eguquguqukayo iphansi kakhulu, kuyoba nzima ukuthi inhlanganisela yerabha "imunce impushana".
Generally speaking, the higher the molar mass, the better the physical and mechanical properties of the vulcanized rubber, but its processability and fluidity will decline, and the speed of "powder intake" (filler mixing into raw rubber) will slow down. When processing molded compound rubber, raw rubber with a high molar mass (>600,000) ngokuvamile kukhethwa. Kodwa-ke, lapho wenza imikhiqizo ekhishwe, ukuthuthukisa i-extrusion fluidity, i-molar mass kufanele ibe ngaphansi kancane. Ubukhulu bokuqukethwe kwe-vinyl kunomthelela omkhulu ekusebenzeni okuphelele kwerabha exubile. Ukusebenza nokuvumelana nezimo kwerabha ehlanganisiwe enokuqukethwe kwe-vinyl okungu-0.1% kuya ku-0.2% kungcono kakhulu.