Ii-Magnesium oxides (MgOs)zisetyenziswe kuShishino lweRubha iminyaka engaphezu kwe-100.Kungekudala emva kokufunyaniswa kwe-sulphur vulcanization ngo-1839, i-MgO kunye nezinye i-inorganic oxides zibonakalise ukukhawulezisa izinga lonyango olucothayo lwesulfure esetyenziswa yodwa.Kwakungekho kwasekuqaleni kwee-1900s xa ii-accelerator ze-organic zaphuhliswa kwaye zatshintshwa i-magnesium kunye nezinye ii-oxides njengezona zikhawulezayo kwiinkqubo zokunyanga.Ukusetyenziswa kwe-MgO kwehle kwada kwasekuqaleni kwe-1930 ngexesha lokuzalwa kwe-elastomer entsha yokwenziwa eyayisebenzisa le oxide ngokubanzi ukuzinza kunye nokunciphisa (i-acid scavenge) i-compound-polychloroprene (CR).Kwangoku, ekuqaleni kwenkulungwane ezayo, ukusetyenziswa okuphambili kweMgO kwishishini lerabha kusekho kwiinkqubo zokunyanga i-polychloroprene (CR).Ukutyhubela iminyaka, i-compounders yaqonda inzuzo ye-MgO kwezinye i-elastomers ezifana ne-chlorosulfonated polyethylene (CSM), i-fluoroelastomer (FKM), i-halobutyl (i-CIIR, i-BIIR), i-hydrogenated NBR (HNBR), i-polyepichlorohydrin (ECO) phakathi kwabanye.Makhe siqale sijonge ukuba njaniIiMgO zebakala lerabhaziyaveliswa kunye neempawu zazo.
Ekuqaleni kwishishini lerabha kuphela uhlobo olulodwa lwe-MgO lwalufumaneka-lunzima (ngenxa yobuninzi bayo).Olu hlobo lwaveliswa ngokubola kwe-thermaliimagnesites zendalo(MgCO2).Ibanga eliphumayo lalihlala lingacocekanga, lingasebenzi kakhulu kwaye linesayizi enkulu yamasuntswana.Ngokuphuhliswa kwe-CR, abavelisi be-magnesia bavelise ubunyulu obutsha, obuphezulu, obusebenzayo, obuncinci be-particle MgO-extra light.Le mveliso yenziwe ngokubola okusisiseko kwe-magnesium carbonate (MgCO3).Isasetyenziswa namhlanje kumayeza kunye nezithambiso, le MgO yatshintshwa yi-particle esebenzayo kakhulu, encinci ye-particle MgO-light okanye ukukhanya kobugcisa.Phantse zonke ii-rubber compounders zisebenzisa olu hlobo lwe-MgO.Iveliswa ngokubola kweempawu ze-magnesium ze-thermal 2 iintlobo: ziqhubekileihydroxide (Mg(OH)2).Ubuninzi bayo obukhulu buphakathi kobunzima kunye nokukhanya okongeziweyo kwaye kunomsebenzi ophezulu kakhulu kunye nobukhulu bamasuntswana amancinci.Ezi mpawu zimbini zokugqibela-umsebenzi kunye nobungakanani bamasuntswana-zezona mpawu zibalulekileyo kuyo nayiphi na iMgO esetyenziswa kwirubha edityanisiweyo.
Ixesha lokuposa: Nov-15-2022