Basa reAntioxidants muKuvandudza Hupenyu hweMuchinjikwa-Yakabatana Polyethylene (XLPE) Insulated Cables.
Muchinjikwa-yakabatana polyethylene (XLPE)chinhu chekutanga chinodzivirira chinoshandiswa mumatambo epakati uye akakwira-voltage. Muhupenyu hwavo hwese hwekushanda, tambo idzi dzinosangana nematambudziko akasiyana, anosanganisira kusiyanisa mamiriro ekunze, kushanduka kwetembiricha, kushushikana kwemagetsi, uye kusangana kwemakemikari. Izvi zvinhu pamwe chete zvinopesvedzera kusimba uye hupenyu hurefu hwetambo.
Kukosha kweAntioxidants muXLPE Systems
Kuti uve nechokwadi chehupenyu hwakawedzerwa hwesevhisi yeXLPE-insulated tambo, kusarudza yakakodzera antioxidant ye polyethylene system kwakakosha. Antioxidants inoita basa rakakosha mukuchengetedza polyethylene kubva mukuora kweoxidative. Nekukurumidza kuita nemahara radicals anogadzirwa mukati mezvinyorwa, antioxidants inoumba mamwe akagadzikana makomisheni, senge hydroperoxides. Izvi zvinonyanya kukosha nekuti mazhinji-muchinjiko-yekubatanidza maitiro eXLPE ari peroxide-based.
Iyo Degradation Maitiro ePolymers
Nekufamba kwenguva, mapolymer mazhinji zvishoma nezvishoma anove brittle nekuda kwekuparara kuri kuramba kuchiitika. Kuguma-kwehupenyu hwemapolymers kunowanzo kutsanangurwa senzvimbo iyo kureba kwavo panguva yekuzorora kunodzikira kusvika pa50% yeukoshi hwepakutanga. Kupfuura chikumbaridzo ichi, kunyangwe kukotama kudiki kwetambo kunogona kutungamira mukutsemuka uye kukundikana. Zviyero zvepasi rose zvinowanzotora mucherechedzo we polyolefins, kusanganisira muchinjika-yakabatana polyolefins, kuongorora kushanda kwezvinhu.
Arrhenius Model yeCable Life Prediction
Hukama pakati petembiricha uye tambo yehupenyu hunowanzotsanangurwa uchishandisa iyo Arrhenius equation. Iyi modhi yemasvomhu inoratidza mwero wekuita kwemakemikari se:
K= D e(-Ea/RT)
Kupi:
K: Yakanyanya kuita mwero
D: Nguva dzose
Ea: Activation simba
R: Boltzmann gasi nguva dzose ( 8.617 x 10-5 eV/K)
T: Tembiricha yakakwana muKelvin (273+ Temp mu °C)
Yakarongedzerwazve algebra, iyo equation inogona kuratidzwa semutsetse fomu: y = mx+b.
Kubva pane iyi equation, activation simba (Ea) inogona kutorwa uchishandisa graphical data, ichigonesa kufanotaura kwehupenyu hwetambo pasi pemamiriro akasiyana siyana.
Yakawedzera Kuchembera Miedzo
Kuti uone hupenyu hwetambo dzeXLPE-insulated tambo, sampuli dzekuyedza dzinofanirwa kukwidziridzwa kuyedza kuchembera pane inokwana matatu (zvichida mana) akasiyana tembiricha. Idzi tembiricha dzinofanirwa kurebera chiyero chakaringana kumisikidza hukama pakati penguva-ku-kutadza uye tembiricha. Zvikuru, tembiricha yakadzikira yekuratidzwa inofanirwa kukonzeresa nguva-kusvika-yekupedzisira-inokwana maawa zviuru zvishanu kuve nechokwadi chechokwadi che data rebvunzo.
Nekushandisa nzira iyi yakaoma uye kusarudza yakakwirira-inoshanda antioxidants, kuvimbika kwekushanda uye hupenyu hurefu hweXLPE-insulated tambo dzinogona kuvandudzwa zvakanyanya.
Nguva yekutumira: Jan-23-2025