Karolo ea Li-Antioxidants ho Ntlafatsa Nako ea Bophelo ea Lithapo Tse Kenyellelitsoeng ka Cross-Linked Polyethylene (XLPE)
Polyethylene e kopantsoeng ka sefapano (XLPE)ke sesebelisoa sa mantlha sa insulating se sebelisoang ka likhoele tse mahareng le tse matla a phahameng. Bophelong bohle ba bona ba ts'ebetso, likhoele tsena li tobana le liphephetso tse fapaneng, ho kenyelletsa maemo a leholimo a fapaneng, ho fetoha ha mocheso, khatello ea mochini le tšebelisano ea lik'hemik'hale. Lintlha tsena ka kakaretso li susumetsa ho tšoarella le nako e telele ea lithapo.
Bohlokoa ba Antioxidants ho XLPE Systems
Ho netefatsa bophelo bo atolositsoeng ba ts'ebeletso bakeng sa likhoele tsa XLPE-insulated, ho bohlokoa ho khetha antioxidant e nepahetseng bakeng sa sistimi ea polyethylene. Li-antioxidants li bapala karolo ea bohlokoa ho sireletseng polyethylene khahlanong le ho senyeha ha oxidative. Ka ho arabela ka potlako ka li-radicals tsa mahala tse hlahisoang ka har'a thepa, li-antioxidants li theha metsoako e tsitsitseng haholoanyane, joalo ka hydroperoxides. Sena se bohlokoa haholo hobane mekhoa e mengata ea ho hokahanya XLPE e thehiloe ka peroxide.
Mokhoa oa ho senyeha ha li-polymers
Ha nako e ntse e ea, li-polymers tse ngata li fetoha butle butle ka lebaka la ho senyeha ho tsoelang pele. Qetellong ea bophelo bakeng sa li-polymers ka tloaelo e hlalosoa e le ntlha eo bolelele ba bona nakong ea khefu bo fokotsehang ho ea ho 50% ea boleng ba pele. Ka nģ'ane ho moeli ona, esita le ho kobeha ho fokolang ha mohala ho ka lebisa ho phunyeha le ho hlōleha. Maemo a machaba hangata a sebelisa mokhoa ona oa polyolefin, ho kenyeletsoa polyolefin e amanang le sefapano, ho lekola tšebetso ea thepa.
Arrhenius Model bakeng sa Boprofeta ba Bophelo ba Cable
Kamano pakeng tsa mocheso le nako ea bophelo ea cable e atisa ho hlalosoa ho sebelisoa equation ea Arrhenius. Moetso ona oa lipalo o hlahisa sekhahla sa karabelo ea lik'hemik'hale joalo ka:
K= D e(-Ea/RT)
Moo:
K: Sekhahla se ikhethileng sa karabelo
D: Kamehla
Ea: Matla a ho sebetsa
R: Khase e tsitsitseng ea Boltzmann ( 8.617 x 10-5 eV/K)
T: Mocheso o felletseng oa Kelvin (273+ Temp in °C)
Ha e hlophisitsoe bocha ka aljebra, equation e ka hlalosoa e le mokhoa oa mola: y = mx+b
Ho tsoa ho equation ena, activation energy (Ea) e ka etsoa ho sebelisoa data ea graphical, e nolofalletsang likhakanyo tse nepahetseng tsa bophelo ba cable tlas'a maemo a fapaneng.
Liteko tse Potlakileng tsa Botsofali
Ho tseba nako ea bophelo ba likhoele tsa XLPE-insulated, mehlala ea liteko e lokela ho etsoa litekong tse potlakileng tsa botsofali bonyane ba lithempereichara tse tharo (haholo-holo tse nne). Lithempereichara tsena li tlameha ho nka sebaka se lekaneng ho theha kamano e haufi pakeng tsa ho hloleha ha nako le mocheso. Haholo-holo, mocheso o tlase oa ho pepeseha o lokela ho fella ka nako ea ho qetela ea bonyane lihora tse 5,000 ho netefatsa bonnete ba lintlha tsa tlhahlobo.
Ka ho sebelisa mokhoa ona o thata le ho khetha li-antioxidants tse sebetsang hantle haholo, ts'epahalo ea ts'ebetso le bophelo bo bolelele ba likhoele tsa XLPE-insulated li ka ntlafatsoa haholo.
Nako ea poso: Jan-23-2025