Matsayin Antioxidants a cikin Haɓaka Tsawon Rayuwa na Kebul-Linked Polyethylene (XLPE) Insulated Cables
Polyethylene mai haɗin kai (XLPE)wani abu ne na farko da ake amfani da shi a cikin kebul na matsakaici da ƙarfin lantarki. A tsawon rayuwarsu ta aiki, waɗannan igiyoyi suna fuskantar ƙalubale iri-iri, gami da yanayin yanayi daban-daban, sauyin yanayi, damuwa na inji, da hulɗar sinadarai. Wadannan abubuwa tare suna yin tasiri ga dorewa da tsawon rayuwar igiyoyi.
Muhimmancin Antioxidants a cikin Tsarin XLPE
Don tabbatar da tsawaita rayuwar sabis don igiyoyin da aka keɓance XLPE, zaɓin maganin antioxidant da ya dace don tsarin polyethylene yana da mahimmanci. Antioxidants suna taka muhimmiyar rawa wajen kiyaye polyethylene daga lalatawar iskar oxygen. Ta hanyar saurin amsawa tare da radicals kyauta waɗanda aka samar a cikin kayan, antioxidants suna samar da ƙarin barga mahadi, irin su hydroperoxides. Wannan yana da mahimmanci musamman saboda yawancin hanyoyin haɗin kai don XLPE sune tushen peroxide.
Tsarin Lalacewar polymers
A tsawon lokaci, yawancin polymers a hankali suna raguwa saboda ci gaba da lalacewa. Ƙarshen rayuwa don polymers yawanci ana bayyana shi azaman lokacin da tsayin su a hutu ya ragu zuwa 50% na ƙimar asali. Bayan wannan bakin kofa, ko da ƙananan lanƙwasawa na kebul na iya haifar da tsagewa da gazawa. Ka'idodin ƙasashen duniya galibi suna ɗaukar wannan ma'auni don polyolefins, gami da polyolefins masu alaƙa, don tantance aikin kayan aiki.
Samfurin Arrhenius don Hasashen Rayuwar Kebul
Alakar da ke tsakanin zafin jiki da tsawon rayuwar kebul ana kwatanta ta ta amfani da ma'aunin Arrhenius. Wannan samfurin lissafi yana bayyana ƙimar amsawar sinadarai kamar:
K= D e(-Ea/RT)
Inda:
K: Ƙimar amsa ta musamman
D: Tsayawa
Ea: Ƙarfin kunnawa
R: Boltzmann iskar gas (8.617 x 10-5 eV/K)
T: Cikakken zafin jiki a Kelvin (273+ Temp a °C)
Sake tsarawa ta algebra, ana iya bayyana ma'aunin a matsayin siffa mai layi: y = mx+b
Daga wannan ma'auni, ana iya samun kuzarin kunnawa (Ea) ta amfani da bayanan hoto, yana ba da damar ainihin tsinkayar rayuwar kebul a ƙarƙashin yanayi daban-daban.
Gaggauta Gwajin Tsufa
Don ƙayyade tsawon rayuwar igiyoyin da aka keɓance na XLPE, samfuran gwaji yakamata a gabatar da su don saurin gwaje-gwajen tsufa a ƙalla guda uku (zai fi dacewa huɗu) yanayin zafi daban-daban. Dole ne waɗannan yanayin zafi su faɗi isashen kewayo don kafa alakar layi tsakanin gazawar lokaci da zafin jiki. Musamman ma, mafi ƙanƙan yanayin zafi ya kamata ya haifar da ma'anar lokaci-zuwa-ƙarshen-maki na aƙalla sa'o'i 5,000 don tabbatar da ingancin bayanan gwajin.
Ta hanyar yin amfani da wannan tsattsauran ra'ayi da zaɓin babban aikin antioxidants, ana iya haɓaka amincin aiki da tsawon rayuwar igiyoyin da aka keɓe na XLPE.
Lokacin aikawa: Janairu-23-2025