Kupititsa patsogolo Moyo wa Chingwe cha XLPE Ndi Ma Antioxidants

Udindo wa Ma Antioxidants Pakukulitsa Moyo wa Zingwe Zotetezedwa ndi Polyethylene (XLPE)

Polyethylene yolumikizidwa ndi mtanda (XLPE)ndi chinthu chachikulu chotetezera kutentha chomwe chimagwiritsidwa ntchito mu zingwe zapakati ndi zapamwamba. Pa moyo wawo wonse wogwirira ntchito, zingwezi zimakumana ndi mavuto osiyanasiyana, kuphatikizapo nyengo zosiyanasiyana, kusinthasintha kwa kutentha, kupsinjika kwa makina, komanso kuyanjana kwa mankhwala. Zinthu izi zimakhudza kulimba ndi moyo wautali wa zingwezi.

Kufunika kwa Ma Antioxidants mu Machitidwe a XLPE

Kuti zingwe zotetezedwa ndi XLPE zigwire ntchito kwa nthawi yayitali, kusankha antioxidant yoyenera ya polyethylene ndikofunikira kwambiri. Ma antioxidants amachita gawo lofunikira kwambiri poteteza polyethylene kuti isawonongeke ndi okosijeni. Mwa kuchitapo kanthu mwachangu ndi ma free radicals omwe amapangidwa mkati mwa chinthucho, ma antioxidants amapanga mankhwala okhazikika, monga hydroperoxides. Izi ndizofunikira kwambiri chifukwa njira zambiri zolumikizirana za XLPE zimachokera ku peroxide.

Njira Yowonongeka ya Ma Polima

Pakapita nthawi, ma polima ambiri amayamba kufooka pang'onopang'ono chifukwa cha kuwonongeka kosalekeza. Nthawi zambiri ma polima amathera nthawi yawo yotalikirapo akamasweka imachepa kufika pa 50% ya mtengo woyambirira. Kupitirira malire awa, ngakhale kupindika pang'ono kwa chingwe kungayambitse kusweka ndi kulephera. Miyezo yapadziko lonse nthawi zambiri imagwiritsa ntchito muyezo uwu wa ma polima, kuphatikizapo ma polima olumikizidwa, kuti ayesere momwe zinthu zikuyendera.

Chitsanzo cha Arrhenius cha Kuneneratu Moyo wa Chingwe

Ubale pakati pa kutentha ndi nthawi ya chingwe nthawi zambiri umafotokozedwa pogwiritsa ntchito Arrhenius equation. Chitsanzo cha masamu ichi chimafotokoza kuchuluka kwa momwe mankhwala amachitira motere:

K= D e(-Ea/RT)

Kumene:

K: Kuchuluka kwa momwe munthu amachitira zinthu

D: Wokhazikika

Ea: Mphamvu yoyambitsa

R: Chosasinthika cha mpweya wa Boltzmann (8.617 x 10-5 eV/K)

T: Kutentha konse mu Kelvin (273+ Temperature mu °C)

Posinthidwa mwa algebra, equation ikhoza kufotokozedwa ngati mawonekedwe olunjika: y = mx+b

Kuchokera mu equation iyi, mphamvu yoyambitsa (Ea) ingapezeke pogwiritsa ntchito deta yojambula, zomwe zimathandiza kulosera molondola za moyo wa chingwe pansi pa mikhalidwe yosiyanasiyana.

Mayeso Ofulumira a Ukalamba

Kuti mudziwe nthawi ya moyo wa zingwe zotetezedwa ndi XLPE, zitsanzo zoyesera ziyenera kuyesedwa mwachangu kuti zikalamba pa kutentha kosachepera katatu (makamaka kanayi). Kutentha kumeneku kuyenera kukhala kokwanira kuti pakhale ubale wolunjika pakati pa nthawi ndi kulephera ndi kutentha. Chofunika kwambiri, kutentha kochepa kwambiri kuyenera kubweretsa nthawi yapakati mpaka kumapeto kwa maola osachepera 5,000 kuti zitsimikizire kuti deta yoyeserayo ndi yolondola.

Pogwiritsa ntchito njira yokhwimayi komanso kusankha ma antioxidants ogwira ntchito bwino, kudalirika komanso kukhalitsa kwa zingwe zotetezedwa ndi XLPE zitha kukulitsidwa kwambiri.