Matsayin Antioxidants wajen Inganta Rayuwar Kebul ɗin da aka Rufe da Polyethylene (XLPE)
Polyethylene mai haɗin giciye (XLPE)babban kayan rufewa ne da ake amfani da shi a cikin kebul na matsakaici da babban ƙarfin lantarki. A tsawon rayuwarsu ta aiki, waɗannan kebul suna fuskantar ƙalubale daban-daban, gami da yanayin yanayi daban-daban, canjin yanayin zafi, damuwa ta injiniya, da hulɗar sinadarai. Waɗannan abubuwan suna tasiri ga dorewa da tsawon rayuwar kebul ɗin.
Muhimmancin Antioxidants a cikin Tsarin XLPE
Domin tabbatar da tsawaita rayuwar kebul masu rufi da XLPE, zaɓar maganin hana tsufa mai dacewa ga tsarin polyethylene yana da matuƙar muhimmanci. Maganin hana tsufa yana taka muhimmiyar rawa wajen kare polyethylene daga lalacewar iskar oxygen. Ta hanyar hanzarta amsawa da free radicals da aka samar a cikin kayan, antioxidants suna samar da ƙarin hadaddun abubuwa masu ƙarfi, kamar hydroperoxides. Wannan yana da matuƙar muhimmanci musamman saboda yawancin hanyoyin haɗin gwiwa na XLPE suna dogara ne akan peroxide.
Tsarin Lalacewa na Polymers
A tsawon lokaci, yawancin polymers suna yin rauni a hankali saboda lalacewa da ke ci gaba da faruwa. Ƙarshen rayuwa ga polymers yawanci ana bayyana shi a matsayin wurin da tsawaitarsu a lokacin karyewa ta ragu zuwa kashi 50% na ƙimar asali. Bayan wannan iyaka, ko da ƙaramin lanƙwasa na kebul na iya haifar da fashewa da gazawa. Ka'idojin ƙasa da ƙasa galibi suna ɗaukar wannan ma'aunin don polyolefins, gami da polyolefins masu haɗin gwiwa, don tantance aikin abu.
Tsarin Arrhenius don Hasashen Rayuwar Kebul
Ana bayyana alaƙar da ke tsakanin zafin jiki da tsawon rayuwar kebul ta amfani da lissafin Arrhenius. Wannan samfurin lissafi yana bayyana ƙimar amsawar sinadarai kamar haka:
K= D e(-Ea/RT)
Ina:
K: Takamaiman ƙimar amsawa
D: Daidaito
Ea: Ƙarfin kunnawa
R: Matsayin iskar gas na Boltzmann ( 8.617 x 10-5 eV/K)
T: Cikakken zafin jiki a Kelvin (273+ Zafin jiki a °C)
Idan aka sake tsara lissafi ta hanyar algebra, za a iya bayyana lissafin a matsayin siffa mai layi: y = mx+b
Daga wannan lissafi, ana iya samun kuzarin kunnawa (Ea) ta amfani da bayanan zane, wanda ke ba da damar hasashen rayuwar kebul a ƙarƙashin yanayi daban-daban.
Gwaje-gwajen Tsufa Masu Sauri
Domin tantance tsawon rayuwar kebul masu rufi da XLPE, ya kamata a yi gwajin tsufa cikin sauri a mafi ƙarancin yanayi uku (zai fi dacewa da yanayi huɗu). Waɗannan yanayin zafi dole ne su kasance a cikin isasshen iyaka don kafa alaƙar layi tsakanin lokaci zuwa gazawa da zafin jiki. Abin lura shi ne, mafi ƙarancin zafin jiki da za a iya fallasawa ya kamata ya haifar da matsakaicin lokaci zuwa ƙarshe na akalla awanni 5,000 don tabbatar da ingancin bayanan gwajin.
Ta hanyar amfani da wannan tsari mai tsauri da kuma zaɓar magungunan hana tsufa masu aiki sosai, ingancin aiki da tsawon rai na kebul masu kariya daga XLPE za a iya ƙara su sosai.
Lokacin Saƙo: Janairu-23-2025