Umphathi omkhulu wesikhatsi siphawuliyo sihlukumeza ukuze lisebenzele PVC resin. Imigomo yesintu esingaphambili (ngokusho, ethylene, chlorine) ziyahlukumeza, lokhu kungaba kuhlukumeza isebenziso sesikhatsi se-PVC resin. Umphathi we-2 nguqukumbu nokuphelele kanye nokusebenzela. Ukuba bantu bakhulu babafuna PVC resin, kunye nokuba akukho inani elilinganayo, isebenziso sesikhatsi sethlula.
Isibhenzo sesikhatsi se-PVC singabuyelekile phakathi komhlangano wokusetha ngalo lwesikhashana. Kufanele le nto ikhululeke ukuba abalimi babuyelekile ukubuka amagama angaphambili ukuthola uphawu olunemva. Zingaphambili izinhlobo ezinikezeli zizozihamba ngokumoya ukuba zisetha amandla njengamanje, ngaphandle kokuba zizohlukumeza imali yakho ukuba kukho umthombo omkhulu. Ngokuthi, ukuba uzobuya kwezinye izinto, abalimi bazoba kuhlonipha indawo yokusebenza kunye nokusebenza kwenye into esiqinileyo kwe-PVC resin usebenzisayo.
Ukugcina nokusetyenziswa: Phakathi kwezilimi ezidingekileyo, xa iphethelo ye-PVC yiya nokufuneka, uhlanganyelwa abanye ngabanye okungena amasela nokuba abafundisi. Xa amagama angaphandle kakhulu, kungenzeka ukwazi ukuthi uza kubudisela yini uma amagama angahlukele ngokukhawuleka. Bona babenzi ukulala phakathi komhlaba ukuvumela umlilo wokuqala lokuhlola imali yokusebenzisa i-PVC. Ukusetyenziswa kwamagama akuyenza ukuba zingene iziphumo zabantu eziphumayo, nokuba zingene ukuphendula imali yokusebenzisa i-PVC ukuya emakhengethe eneenkcukacha.
Kwiqhutywa lokuhlola iphethelo le-PVC, kukhonjwa amagcinyi esikwangeli sokuhlanganiswa kwezinye izinto ezithethwayo ngezantsi kwezamasela nokuba abafundisi. Xa kuhlola isithunywa sase-PVC, abafundisi bazibophelela ukuba ungenzi lokuhlola iphethelo, ukuba umnandi ophathelise ukwenza imali kunye nokuba kuninzi okanye amaciko asemandla. Abafundisi babenzi ukuba zikhona amagama engcono ukusebenza, ukuba zingene imali yokusebenzisa i-PVC, ukuba zingene amasela amaningi kunye nokuba zingene ukuphendula amagama. Izandla zabo zizobhekisisa izintloko zomkhonto nokuba zizoba zihlola ukuphendula amagama.
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