Lub luag haujlwm ntawm cov tshuaj tiv thaiv kab mob hauv kev txhim kho lub neej ntawm tus ntoo khaub lig-cross-txuas polyethylene (xlpe) cov cable insulated cables
Hla-Txuas Polyethylene (XLPE)yog thawj cov ntaub ntawv insulating siv hauv nruab nrab thiab qib high-voltage cables. Thoob plaws hauv lawv lub neej ua haujlwm, cov cables muaj kev sib tw sib tw, suav nrog cov kev hloov pauv hloov tshiab, kev ntxhov siab, thiab tshuaj lom neeg sib cuam tshuam. Cov xwm txheej no ua ke cuam tshuam txog lub durability thiab ntev ntawm cov cables.
Qhov tseem ceeb ntawm Antioxidants hauv XLPE Systems
Txhawm rau kom paub meej lub neej pabcuam rau XLPE-insulated cables, xaiv ib qho tsim nyog antioxidant rau cov polyethylene system yog qhov tseem ceeb. Antioxidants ua cov haujlwm tseem ceeb hauv kev tiv thaiv kev tiv thaiv polyethylene tawm tsam oxidative degre. Los ntawm sai sai reacting nrog dawb radicals tsim nyob rau hauv cov khoom siv, antioxidants daim tebchaw, xws li cov dej cawv. Qhov no yog tshwj xeeb heev vim tias feem ntau sib txuas cov txheej txheem rau xlpe yog peroxide-raws li.
Cov txheej txheem degradation ntawm polymers
Lub sijhawm dhau los, feem ntau polymers maj mam ua brittle vim ongoing depradation. Qhov kawg-ntawm-lub neej rau polymers feem ntau txhais tau tias yog qhov uas lawv elongation thaum tawg rau 50% ntawm tus nqi qub. Tshaj li qhov pib no, txawm tias muaj me me khoov ntawm lub cable tuaj yeem ua rau tawg thiab ua tsis tiav. Cov txheej txheem thoob ntiaj teb feem ntau tau txais cov txheej txheem no rau polyolefins, suav nrog cov polyolefins txuas, los ntsuas cov khoom ua haujlwm.
Cov Qauv Qauv Rau Cable Lub Neej Kev Ua Ntej
Cov kev sib raug zoo ntawm qhov kub thiab kub thiab siv nyiaj cable feem ntau tau piav qhia siv cov ntawv sib npaug ntawm Arrhenius. Qhov kev ua lej no nthuav qhia tus nqi ntawm cov tshuaj lom neeg cov tshuaj tiv thaiv raws li:
K = d e (-a / RT)
Qhov twg:
K: Tus nqi tshuaj tiv thaiv tshwj xeeb
D: tas li
EA: Kev Ua Haujlwm Zog
R: Boltzmann Roj tas li (8.617 x 10-5 EV / K)
T: Tsis maj kub hauv Kelvin (273+ temp hauv ° C)
Rov qab ua dua algebraically, qhov sib npaug tuaj yeem qhia tau raws li txoj kab linear: Y = mx + b
Los ntawm qhov sib npaug no, ua kom muaj zog zog (EA) tuaj yeem muab tau siv cov ntaub ntawv graphical, ua rau muaj kev twv kwv yees ntawm cable lub neej nyob rau ntau yam kev mob.
Nrov Cov Laus Kev Ntsuas
Txhawm rau txiav txim siab lub neej ntawm XLPE-insulated cables, ntsuas cov qauv yuav tsum raug sim kom nrawm kev sim tsawg kawg ntawm peb (nyiam dua plaub) txawv. Cov ntsuas kub yuav tsum tau nthuav dav ntau yam los tsim txoj kev sib raug zoo linear thaum lub sijhawm-rau-tsis ua haujlwm thiab kub. Feem ntau, qhov qis tshaj qhov ntsuas kub yuav tsum ua rau lub sijhawm lub sijhawm-xaus-to-top-top-top-top-top-top-top-top-top-top-top-top-top-top-top-top-wb ua kom paub tseeb tias qhov siv tau ntawm cov ntaub ntawv ntsuas.
Los ntawm kev ua haujlwm no txoj kev nruj me ntsis thiab xaiv cov tshuaj tiv thaiv kev ua haujlwm siab, kev ua haujlwm ntawm XLPE-insulated cables tuaj yeem txhim kho kom zoo dua.
Lub Sijhawm Post: Jan-23-2025