Ngaphandle kwemikhiqizo embalwa yerabha yokwenziwa, imikhiqizo eminingi yerabha yokwenziwa, njengerabha yemvelo, iyinto evuthayo noma evuthayo. Njengamanje, izindlela eziyinhloko ezisetshenziswa ukuthuthukisa ukubambezeleka komlilo ukwengeza izinto ezivimbela umlilo noma izigcwalisi ezivimbela umlilo, kanye nokuxuba nokushintsha ngezinto ezivimbela umlilo. Kunezinhlobo eziningana zobuchwepheshe ezivimbela umlilo zerabha:
1. Irabha ye-hydrocarbon
Irabha ye-hydrocarbon ihlanganisa i-NR, i-SBR, i-BR, njll. Irabha ye-hydrocarbon ngokuvamile ayimelani nokushisa kahle kanye nokuvinjelwa komlilo, futhi iningi lemikhiqizo yokubola ngesikhathi sokusha yigesi evuthayo. Ukwengeza izinto ezivimbela umlilo kuyindlela ebalulekile yokuthuthukisa ukuvinjelwa komlilo kwerabha ye-hydrocarbon, futhi umphumela wokubambisana wezinto ezivimbela umlilo usetshenziswa ukuthuthukisa umphumela wokuvinjelwa komlilo. Kodwa-ke, kufanele kuqashelwe umphumela omubi wenani lezinto ezivimbela umlilo ezimpahleni zerabha.
Faka izithasiselo ezingaphili ezivimbela ilangabi njenge-calcium carbonate, ubumba, i-talcum powder, i-white carbon black, i-aluminium hydroxide, njll. ukuze unciphise inani lezinto eziphilayo ezivuthayo. I-calcium carbonate ne-nitrogen alumina zinomphumela we-endothermic uma zibola. Le ndlela izonciphisa izakhiwo ezithile zomzimba nezemishini zezinto zerabha, futhi inani lokugcwalisa akufanele libe likhulu kakhulu.
Ngaphezu kwalokho, ukwandisa ubuningi berabha obuhlanganisayo kungandisa inkomba yayo ye-oxygen. Ngakho-ke, kungathuthukisa ukubambezeleka komlilo kwerabha. Lokhu kungase kube ngenxa yokwanda kwezinga lokushisa lokubola kokushisa kwezinto zerabha. Le ndlela isetshenziswe ngerabha ye-ethylene propylene
2. Irabha ene-halogen
Irabha ene-halogen iqukethe izakhi ze-halogen, enenkomba ye-oxygen ngokuvamile ephakathi kuka-28 no-45, kanti inkomba ye-oxygen ye-FPM idlula ngisho no-65. Uma okuqukethwe kwe-halogen ku-rabha ene-halogen kuphakeme, kulapho inkomba yayo ye-oxygen iphakama khona. Lolu hlobo lwerabha ngokwalo lune-flame retardancy ephezulu kanye nokuzicisha lapho luvutha. Ngakho-ke, ukwelashwa kwalo okubamba umlilo kulula kunerabha ye-hydrocarbon. Ukuze kuthuthukiswe ukubambezeleka komlilo kwerabha ene-halogen, indlela yokufaka izinto ezibamba umlilo ivame ukusetshenziswa.
3. Irabha ye-Heterochain
Uhlobo olumele kakhulu lwerabha kulesi sigaba irabha ye-dimethyl silicone, enenkomba ye-oxygen engaba ngu-25. Izindlela zangempela zokuvimbela umlilo ezisetshenziswayo ukukhulisa izinga lokushisa layo lokubola kokushisa, ukwandisa izinsalela ngesikhathi sokubola kokushisa, kanye nokunciphisa izinga lokukhiqizwa kwamagesi avuthayo.
Isikhathi sokuthunyelwe: Julayi-27-2023
