Kwanan nan, Sun Rong da sauran masu bincike masu alaƙa daga Cibiyar Fasaha ta Shenzhen, Kwalejin Kimiyya ta China sun gabatar da wata dabara mai sauƙi ta maganin zafi mai matakai ɗaya don shirya kayan kumfa mai laushi na azurfa/rage girman graphene oxide mai rufi da carbonized melamine (CMF/rGO/Ag). Kayan kumfa mai hade da carbonized melamine sun ba da kyawawan halaye na injiniya da kyakkyawan tasirin kariyar EMI (EMI SE).
Haɓakar hanyoyin sadarwa na 5G da wayoyi masu wayo ya ta'azzara matsalar kutse ta hanyar lantarki.
Tsananin tsangwama na lantarki na iya haifar da asarar bayanai, gazawar tsarin, har ma da haɗari ga lafiyar ɗan adam.
Haɓaka babban aiki na katsalandan kayan kariya na lantarki tare da ƙarancin ƙarancin ƙarancin ƙima da ingantaccen sassauƙa na inji hanya ce mai inganci don murkushe gurɓataccen iska mai cutarwa ko radiation.
Don kayan ƙarfe na al'ada, haɓaka haɓaka aiki koyaushe shine dabarun farko don cimma kayan kariya masu inganci.
Bugu da ƙari, sababbin nanomaterials kamar graphene, carbon nanotubes, da MXene kuma an ba da rahoton cewa suna da babban aikin garkuwar EMI.
Saboda tsarin kera nanomaterials masu sassauƙa sosai, waɗannan kayan ana sarrafa su zuwa kumfa ko sigar fim don garkuwar EMI. Idan aka kwatanta da nau'in kumfa na nanomaterials, fina-finai masu yawa suna nuna ƙarfin aiki.
Babban haɓakawa na iya haifar da babban EMI SE kai tsaye ta hanyar nuna ƙarfi da tasirin igiyoyin lantarki.
Misali, ma'aunin nunin kalaman lantarki na karafa masu sarrafa gaske yakan wuce kashi 90%, wanda ke nufin cewa kashi 90% na igiyoyin wutar lantarki da suka faru za a nuna su cikin sarari kyauta.
Raƙuman wutar lantarki da ke nunawa na iya haifar da mummunar gurɓatawar radiyo na biyu. Har yanzu yana da ƙalubale don samun babban aiki na kayan kariya na EMI tare da ƙarancin haɓakar raƙuman wutar lantarki.
Kayan kariya na nau'in kumfa ya ƙunshi tsari mara kyau. Saboda nauyinsa mai sauƙi, ingantaccen ƙarfin injina da daidaitacce aikin garkuwar EMI, yana da babban yuwuwar maye gurbin kayan kariya na ƙarfe na gargajiya.
Musamman ma, ƙaƙƙarfan tsarin yana ba da nau'in garkuwar nau'in kumfa don samun fa'ida da yawa a bayyane akan igiyoyin lantarki da suka faru, ta yadda kumfa zai iya ɗaukar da rage raƙuman lantarki. An ba da rahoton cewa tsarin porous zai haɓaka ɗaukar igiyoyin lantarki ta MXene.
Idan aka kwatanta da m kayan, da porous tsarin yana da mafi electromagnetic kalaman impedance matching ikon, kuma zai iya sa aukuwa electromagnetic taguwar ruwa shigar ciki tsarin na garkuwa kumfa. Sabili da haka, kayan kariya na EMI tare da ƙarancin ƙima mai ƙima da ƙima mai ɗaukar nauyi yakamata su sami madaidaicin impedance (ƙananan tunani) da babban tunani mai yawa. Misali, an shirya sifofi masu ɗorewa, sifofi masu yawa da sifofi na isotropic, tare da babban EMI SE da ƙididdigar sha. Gabaɗaya magana, hadaddun sifofi da abubuwa masu yawa sau da yawa sun haɗa da sarrafa matakai da yawa, kuma sassaucin inji ba shi da kyau.
An shirya kumfa polyimide da aka yi da azurfa ta hanyar feshin jiki, kuma yawansa ya kai 23kg/m3. An shirya kumfa melamine da aka yi da azurfa ta hanyar saka sinadarai. Kumfa melamine da aka shirya da azurfa yana da babban EMI babban SE na 90 dB da abun ciki na azurfa na 63.5 wt%. Bugu da kari, an kuma ba da shawarar jan karfe/nickel mai rufin polymethacrylimide matasan kumfa da nanoparticle nanoparticle mai rufin polymer mai tushen nanofiber na lantarki na katsalandan hanyar kariya ta plating mara amfani.
Koyaya, saboda rashin daidaituwar mu'amala tsakanin ƙaƙƙarfan ƙarfe da firam mai sassauƙa, kayan kariya na kumfa na ƙarfe waɗanda aka shirya ta hanyar lantarki, plating mara ƙarfi da feshin jiki suna da ƙarancin injina. Haɓaka haɗin kai tsakanin ƙwayoyin ƙarfe da kwarangwal ɗin kumfa mai sassauƙa da kuma gane kayan kariya na kumfa na ƙarfe tare da kyawawan kayan aikin injiniya har yanzu suna cike da ƙalubale.
A cikin wannan binciken, marubucin ya ba da shawarar dabarun magance zafi mai sauƙi na mataki ɗaya don shirya azurfa mai nauyi / rage graphene oxide mai rufi carbonized melamine (CMF / rGO / Ag) kayan kumfa mai hade, wanda ke da kyawawan kayan aikin injiniya da kuma kyakkyawan sakamako na kariya na EMI (EMI SE). Saboda haɓakar haɓakawa tsakanin tsarin haɗin gwiwa da azurfa, CMF / rGO / Ag kumfa ya nuna kyakkyawan kwanciyar hankali bayan 1000 loading-unloading compression cycles. Bugu da ƙari, EMI SE na kumfa ya kai 50.6 dB a yawan nauyin 16 mg cm2 g-1 kawai da ƙananan ƙananan Ag abun ciki na 0.09 vol.
Abin sha'awa shine, haɗin gwiwar tsarin raɗaɗi da musaya masu yawa ya haifar da haɓakar ƙima mai girma (sama da 0.5) na kumfa CMF/rGO/Ag. An ƙara yin nazarin babban tsarin garkuwar ƙima na CMF/rGO/Ag ta hanyar bincike mai iyaka (FEA). Kyakkyawar aikin garkuwar EMI kusa da filin kumfa na CMF/rGO/Ag kumfa yana nuna cewa ƙarancin ƙarancin ƙarfi, kumfa mai ƙarfi na CMF/rGO/Ag yana da fa'idodi masu yawa da fa'idodin aikace-aikacen aikace-aikacen azaman kayan kariya na EMI don marufi na lantarki.