Indima ye-Antioxidants ekuphuculeni ubomi be-Cross-Linked Polyethylene (XLPE) iiCables Insulated Cables
Ipolyethylene edityaniswe ngokunqamlezileyo (XLPE)sisixhobo sokugquma esiphambili esisetyenziswa kwiintambo eziphakathi kunye neziphezulu zombane. Kubo bonke ubomi babo bokusebenza, ezi ntambo zidibana nemiceli mngeni eyahlukeneyo, kubandakanya iimeko ezahlukeneyo zemozulu, ukuguquguquka kwamaqondo obushushu, uxinzelelo kumatshini, kunye nokusebenzisana kweekhemikhali. Ezi zinto zidibeneyo zichaphazela ukuqina kunye nexesha elide leentambo.
Ukubaluleka kwee-Antioxidants kwii-XLPE Systems
Ukuqinisekisa ubomi benkonzo eyandisiweyo ye-XLPE-insulated cables, ukukhetha i-antioxidant efanelekileyo kwi-polyethylene system ibalulekile. Ii-Antioxidants zidlala indima ebalulekileyo ekukhuseleni i-polyethylene ngokuchasene nokonakaliswa kwe-oxidative. Ngokusabela ngokukhawuleza ngeeradicals zasimahla ezenziwe ngaphakathi kwemathiriyeli, ii-antioxidants zenza iikhompawundi ezizinzileyo, ezinje nge-hydroperoxides. Oku kubaluleke kakhulu kuba iinkqubo ezininzi zokudibanisa i-XLPE zisekwe kwiperoxide.
Inkqubo yokuthotywa kweePolymers
Ngokuhamba kwexesha, uninzi lweepolymers ngokuthe ngcembe ziba brittle ngenxa yokuwohloka okuqhubekayo. Ukuphela kobomi bepolymers ngokuqhelekileyo kuchazwa njengendawo apho ubude bawo bekhefu buyancipha ukuya kwi-50% yexabiso lokuqala. Ngaphandle kwalo mda, nokuba ukugoba okuncinci kwentambo kunokukhokelela ekuqhekekeni kunye nokusilela. Imigangatho yezizwe ngezizwe ihlala ithatha le khrayitheriya ye-polyolefins, kubandakanywa i-polyolefins edibeneyo, ukuvavanya ukusebenza kwemathiriyeli.
Imodeli yeArrhenius yeCable Life Prediction
Ubudlelwane phakathi kobushushu kunye nobude bentambo buchazwa ngokuqhelekileyo kusetyenziswa i-equation ye-Arrhenius. Le modeli yemathematika ibonakalisa isantya sokusabela kweekhemikhali ngolu hlobo:
K= D e(-Ea/RT)
Apho:
K: Izinga elithile lokusabela
D: Qho
I-Ea: Amandla okusebenza
R: Irhasi engatshintshiyo yeBoltzmann ( 8.617 x 10-5 eV/K)
T: Ubushushu obupheleleyo eKelvin (273+ Temp ku °C)
Uhlengahlengiso lwe-algebra, i-equation inokubonakaliswa ngendlela yomgca: y = mx+b
Ukusuka kule nxaki, amandla okusebenza (i-Ea) anokuthathwa kusetyenziswa idatha yegraphical, eyenza ukuqikelelwa okuchanekileyo kobomi bentambo phantsi kweemeko ezahlukeneyo.
Uvavanyo lokuguga olukhawulezileyo
Ukumisela ixesha lokuphila kweentambo ze-XLPE-i-insulated, iisampulu zovavanyo kufuneka zifakwe kuvavanyo olukhawulezileyo lokuguga ubuncinane obuthathu (ngokukhethekileyo abane) amaqondo obushushu ahlukeneyo. La maqondo obushushu kufuneka avule uluhlu olwaneleyo ukuseka ubudlelwane phakathi kwexesha ukuya kukusilela kunye nobushushu. Ngokucacileyo, elona qondo lobushushu lisezantsi lokuvezwa kufuneka libangele ixesha lokuya ekupheleni kweeyure ezingama-5,000 ubuncinci ukuqinisekisa ubunyani bedatha yovavanyo.
Ngokusebenzisa le ndlela ingqongqo kunye nokukhetha i-antioxidants ephezulu yokusebenza, ukuthembeka kokusebenza kunye nobude obude beentambo ze-XLPE-insulated zingaphuculwa kakhulu.
Ixesha lokuposa: Jan-23-2025