Irabha inokuqina okuhle, kodwa le mpahla eyigugu ibangela ubunzima obukhulu ekukhiqizweni komkhiqizo. Uma ukuqina kwerabha eluhlaza kungancishiswanga kuqala, iningi lamandla omshini lidliwa ekuguqulweni kwe-elastic ngesikhathi senqubo yokucubungula, futhi isimo esidingekayo asikwazi ukutholakala. Ubuchwepheshe bokucubungula irabha bunezidingo ezithile ze-plasticity yerabha eluhlaza, njengokuxuba, okuvame ukudinga i-viscosity yeMooney engaba ngu-60, kanye nokusula irabha, okudinga i-viscosity yeMooney engaba ngu-40, Ngaphandle kwalokho, ngeke kwenzeke ukusebenza kahle. Ezinye izinamathiselo ezingavuthiwe ziqinile kakhulu, zine-viscosity ephezulu, futhi azinazo izakhiwo zenqubo eziyisisekelo nezidingekayo - i-plasticity enhle. Ukuze kuhlangatshezwane nezidingo zenqubo, irabha eluhlaza kumele ifakwe ipulasitiki ukuze inqume uchungechunge lwama-molecule futhi inciphise isisindo sama-molecule ngaphansi kwezenzo zomshini, zokushisa, zamakhemikhali nezinye. Inhlanganisela yepulasitiki elahlekelwa ukuqina kwayo okwesikhashana futhi ithambe futhi iguquguquke. Kungashiwo ukuthi ukubumba irabha eluhlaza kuyisisekelo sezinye izinqubo zobuchwepheshe.
Inhloso yokubumba irabha eluhlaza iwukuba: okokuqala, ukuthola izinga elithile le-plasticity yerabha eluhlaza, okwenza ifaneleke ukuxuba, ukugoqa, ukukhipha, ukwakha, ukuxuba, kanye nezidingo zezinqubo ezifana nokukhiqizwa kwerabha ye-slurry kanye nerabha yesiponji; Okwesibili ukwenza i-plasticity yerabha eluhlaza ibe yi-homogenize ukuze kukhiqizwe izinto zerabha ezinekhwalithi efanayo.
Ngemva kokwenziwa ipulasitiki, izakhiwo zomzimba nezamakhemikhali zerabha eluhlaza nazo ziyashintsha. Ngenxa yamandla amakhulu okusebenza kanye nokushiswa, isakhiwo sama-molecule kanye nesisindo sama-molecule ngerabha kuzoshintsha ngezinga elithile, ngakho-ke izakhiwo zomzimba nezamakhemikhali nazo zizoshintsha. Lokhu kubonakala ngokuncipha kokunwebeka, ukwanda kwe-plasticity, ukwanda kokuncibilika, ukwehla kwe-viscosity yesisombululo serabha, kanye nokuthuthuka kokusebenza kokunamathela kwezinto zerabha. Kodwa njengoba ukwakheka kwerabha eluhlaza kukhuphuka, amandla okusebenza ngerabha evulcanized ayancipha, ukuguquguquka okuhlala njalo kuyanda, kanye nokumelana nokuguguleka kanye nokumelana nokuguga kokubili kwehla. Ngakho-ke, ukwenziwa ipulasitiki kwerabha eluhlaza kuzuzisa kuphela inqubo yokucubungula irabha, futhi akukhuthazi ukusebenza kwerabha evulcanized.
Isikhathi sokuthunyelwe: Julayi-26-2023
