Indima ye-Antioxidants ekuphuculeni ubomi beCross-Linked Polyethylene (XLPE) Insulated Cables
I-polyethylene edityanisiweyo (XLPE)sisixhobo esiphambili sokukhusela esisetyenziswa kwiintambo eziphakathi neziphezulu. Kuyo yonke imisebenzi yazo, ezi ntambo zijongene nemingeni eyahlukeneyo, kuquka iimeko ezahlukeneyo zemozulu, ukuguquguquka kobushushu, uxinzelelo loomatshini, kunye nokusebenzisana kweekhemikhali. Ezi zinto zichaphazela ukuqina kunye nobude bexesha leentambo.
Ukubaluleka kwee-Antioxidants kwiinkqubo ze-XLPE
Ukuqinisekisa ubomi benkonzo obude beentambo ezifakwe i-XLPE, ukukhetha i-antioxidant efanelekileyo kwinkqubo ye-polyethylene kubalulekile. Ii-antioxidants zidlala indima ebalulekileyo ekukhuseleni i-polyethylene ekuwohlokeni kwe-oxidative. Ngokusabela ngokukhawuleza kwii-free radicals eziveliswa ngaphakathi kwezinto, ii-antioxidants zenza iikhompawundi ezizinzileyo ngakumbi, ezifana ne-hydroperoxides. Oku kubaluleke kakhulu kuba uninzi lweenkqubo zokudibanisa i-XLPE zisekelwe kwi-peroxide.
Inkqubo Yokuwohloka KweePolymers
Ekuhambeni kwexesha, uninzi lweepolymers luya luqhekeka kancinci kancinci ngenxa yokuwohloka okuqhubekayo. Ukuphela kobomi beepolymers kudla ngokuchazwa njengendawo apho ukwandiswa kwazo xa ziqhekeka kwehla ukuya kuma-50% exabiso lazo lokuqala. Ngaphaya kwalo mda, nokuba ukugoba okuncinci kwentambo kunokukhokelela ekuqhekekeni nasekungasebenzini. Imigangatho yamazwe ngamazwe idla ngokuthatha le ndlela yokulinganisa iipolyolefins, kuquka iipolyolefins ezidityanisiweyo, ukuvavanya ukusebenza kwezinto.
Imodeli yeArrhenius yokuQikelela ubomi beCable
Ubudlelwane phakathi kobushushu kunye nobomi bekhebula buchazwa ngokuqhelekileyo kusetyenziswa i-Arrhenius equation. Le modeli yemathematika ichaza izinga lokuphendula kweekhemikhali ngolu hlobo:
K= D e(-Ea/RT)
Apho:
K: Izinga lokuphendula elithile
D: Ohlala ehleli
Ea: Amandla okuvula
R: I-Boltzmann gas constant (8.617 x 10-5 eV/K)
T: Ubushushu obupheleleyo kwiKelvin (273+ Temp kwi °C)
Ihlelwe ngokutsha ngokwe-algebra, i-equation ingabonakaliswa njengemo ethe ngqo: y = mx+b
Kule equation, amandla okusebenza (i-Ea) anokufunyanwa kusetyenziswa idatha yemizobo, okuvumela ukuqikelela ngokuchanekileyo ubomi bekhebula phantsi kweemeko ezahlukeneyo.
Uvavanyo lokwaluphala olukhawulezileyo
Ukuze kuchongwe ixesha lokuphila kweentambo ezifakwe i-XLPE, iisampulu zovavanyo kufuneka zenziwe uvavanyo olukhawulezileyo lokuguga kubushushu obuthathu (mhlawumbi obune) obahlukileyo. La maqondo obushushu kufuneka afikelele kuluhlu olwaneleyo ukuseka ubudlelwane obuchanekileyo phakathi kwexesha lokusilela kunye nobushushu. Okuphawulekayo kukuba, ubushushu obuphantsi bokuvezwa kufuneka bubangele ukuba inqanaba eliphakathi lexesha ukuya ekupheleni libe ubuncinane iiyure ezingama-5,000 ukuqinisekisa ukuba idatha yovavanyo iyasebenza.
Ngokusebenzisa le ndlela ingqongqo nokukhetha ii-antioxidants ezisebenzayo kakhulu, ukuthembeka kokusebenza kunye nobude bexesha leentambo ezifakwe i-XLPE zinokuphuculwa kakhulu.
Ixesha leposi: Jan-23-2025