Polytetrafluoroethylene (PTFE) wani abu ne na roba da aka ƙirƙira da gangan a ƙarshen 1930s yayin da wani masanin sinadarai ke ƙoƙarin haɓaka sabon nau'in firiji mai tushen perfluorethylene.Maimakon samun sinadarin chlorofluorocarbon, masanin kimiyyar ya yi mamakin gano cewa perfluorethylene da aka yi amfani da shi wajen aiwatar da aikin yana amsawa da baƙin ƙarfen da ke cikin akwati kuma an yi shi da polymer a ƙarƙashin matsin lamba.
Abubuwan Tensile:Ana amfani da danniya mai tsauri da raguwa da yawa don dalilai na sarrafa inganci, amma ba su da ƙima don dalilai na ƙira don dalilai guda biyu: na farko, kuma mafi mahimmanci, PTFE bai kamata a yi amfani da shi ba a cikin damuwa fiye da ma'anar yawan amfanin ƙasa (matukar da Load-deformation curve yana da bambancin canji na gangara) kuma na biyu, maƙasudin karaya ya dogara da siffar samfurin kuma saboda haka ba shi da amfani don tsinkaya hali a aikace.
Ƙunƙarar ɗaukar nauyi-tsawo da aka samu tare da samfurori na PTFE sun dogara da crystallinity, nauyin kwayoyin halitta, girman, siffar da watakila tsarin kwayoyin halitta na asali da kuma tsananin kuskuren da suka rage bayan ƙirƙira.Bugu da ƙari kuma sun dogara, kamar yadda aka saba tare da thermoplastics, akan zafin gwaji da ƙimar ƙima.Saboda waɗannan rikice-rikice bayanai anan zasu iya zama nuni ne kawai na ɗabi'a na gaba ɗaya.Gabaɗayan halaye na ɗabi'a a cikin tashin hankali don PTFE azaman aikin zafin jiki.Waɗannan su ne nau'i-nau'i na yau da kullum waɗanda za a iya samun damuwa na yawan amfanin ƙasa, ko da yake ƙasa da yadda zai yiwu ga yawancin sauran kayan robobi.
Babban Amfanin Wutar Lantarki na PTFE:Dangane da aikace-aikacen wutar lantarki mai ƙarfi an san da dadewa cewa a gaban abubuwan fitar da ƙasa gazawar na faruwa ta hanyar zaizayar ƙasa, kamar yadda PTFE abu ne wanda ba shi da tushe.Parr da Scarisbrick sun kwatanta halayen nau'ikan insulators na polymeric ta hanyar gwajin bin diddigin IEE ta amfani da electrolyte, da kuma gwajin ƙura-hazo na ASTM (D21 32-62T).Sun gano cewa PTFE na daya daga cikin ajin zaizayar kasa wanda ya nuna tsawon rai, watau> 1000 hours a gwajin hazo.Don haka PTFE yana da halaye masu amfani don amfani a aikace-aikacen waje.
Don babban rufin rufin za a buƙaci ƙirƙira ƙira mai inganci don samar da sifofi tare da ƙarancin ƙarancin ƙarfi da ɓarna na ciki da ake buƙata ta aikace-aikacen ƙarfin lantarki.Za a iya yin gwaje-gwaje ta na'urorin gano fitarwa na lantarki don tabbatar da 'yanci daga ɓarna masu lalacewa waɗanda za su iya faruwa a cikin babu komai.A madadin haka yana yiwuwa a rage fitar da ruwa ta hanyar zubar da PTFE tare da ruwa mai guba ko tare da iskar gas mai ƙarfi don cika, aƙalla ɗan lokaci, duk wani ɓoyayyen da ke cikin polymer.Sakamakon haka, ƙima don ƙarfin dielectric da aka samu daga gwaje-gwajen da aka gudanar a cikin mai na iya zama babba mai ruɗi don ƙarancin ƙirƙira PTFE saboda zubar da duk wani ɓoyayyen da mai ke samu.
Lokacin aikawa: Nuwamba 24-2019