PTFE abu ne mai matukar amfani saboda yana da haɗe-haɗe na musamman.PTFE ba shi da ƙarancin sinadarai, yanayin yanayi, ingantaccen rufin lantarki, juriya mai zafi, ƙarancin ƙima na gogayya da kaddarorin da ba a haɗa su ba.
Polymers yawanci ana amfani da su wajen kerawa da injiniyanci, duk da haka, binciken da aka buga wanda ke kwatanta kayan aikinsu da alama ba a bayyana shi ba saboda mahimmancin su.Yawancin bayanan da aka gabatar, galibi suna ba da cikakkun bayanai game da ainihin asalin asalin polymer ɗin da aka gwada da tarihin sarrafa shi.Wannan yana yiwuwa saboda kafa ƙayyadaddun kayan aikin tushe sau da yawa yana da wahala kamar yin ainihin gwaje-gwajen injina.Bugu da ƙari, ingantaccen ƙirar kwamfuta na amsawar injin polymer har yanzu yana kan ƙuruciya.Yawancin hanyoyin ƙwaƙƙwaran da ake amfani da su akai-akai, amma sun kasance ba daidai ba a waje da kunkuntar kewayon siga.Ɗayan dalili na wannan, baya ga rikitaccen martani na polymer, shine sau da yawa ba a samun bayanai a waje da ƙunƙuntaccen kewayon gwaji don ƙalubalanci da faɗaɗa ƙarfin ƙwaƙƙwaran ƙirar ƙira ko abubuwan al'ajabi.Anan, mun gabatar da sakamakon farko na yunƙurin ladabtarwa da yawa da nufin fahimtar amsawar injina na ingantaccen polymer daga mahangar gwaji kuma daga baya, haɗe tare da samar da ingantaccen tsarin ƙa'idar da za a iya aiwatar da shi cikin lambobin kwamfuta. .
Polymer da aka kwatanta a cikin wannan binciken shine poly (tetrafluoroethylene) (PTFE).An zaɓi shi don dalilai da yawa, gami da amfani da shi azaman kayan aikin injiniya na gama gari don ƙananan sassa masu girma da samuwa daga masana'antun da yawa.Yayin da aka yi nazari sosai a baya, ba a kula da shi sosai a cikin buɗaɗɗen wallafe-wallafe a cikin shekaru 25 da suka gabata.Mun zaɓi mu sake duba wannan kayan saboda ƙaƙƙarfan tsarinsa da rashin bayanan injina.PTFE abu ne mai ban mamaki ta hanyoyi da yawa.Yana nuna kaddarorin masu amfani akan mafi girman kewayon zafin jiki na kowane polymer;PTFE yana riƙe da wasu ma'auni na ductility a 4 K kuma a wasu yanayi ana amfani da shi a aikace-aikace a 540 8C .Ba shi da narkewa a cikin dukkanin kaushi na kowa kuma yana da tsayayya ga kusan dukkanin kayan acidic da caustic.PTFE yana da mafi girman juriya na kowane abu, ƙarfin ƙarfi mai ƙarfi da ƙarancin ƙarancin dielectric.Matsakaicin juzu'i na zamiya tsakanin PTFE da kayan aikin injiniya da yawa yana da ƙasa sosai kuma lokacin da aka haɗa shi tare da rage lalacewa, ana samar da nau'ikan mahimman kayan masana'antu.Haɗe-haɗe zuwa ƙarancin ƙarancin juzu'anta da kwanciyar hankali, PTFE kusan ba zai yiwu ba ga sauran kayan su bi.Ana amfani da wannan dukiya sau da yawa a cikin fasahar sarrafa masana'antu inda sauƙi na tsaftacewa yana da mahimmanci.Ɗaya daga cikin al'amari na PTFE wanda ya riƙe shi daga ƙarin masana'antu da aikin injiniya shine babban narke danko (1011 P a 380 8C).Wannan yana hana allura da gyare-gyaren busa daga yuwuwar yuwuwar yuwuwar yuwuwar yuwuwar yuwuwar yuwuwar hakan kuma ana samun tsadar sintering da ayyukan masana'antar extrusion don samar da sashi.
Wannan takarda tana mai da hankali kan ƙayyadaddun kayan aiki na tushe da kuma martanin matsa lamba na kayan PTFE na pedigreed a mabambantan ƙima da yanayin zafi.Takardu na gaba za su yi hulɗa da amsawar juzu'i da juzu'i, dalla-dallan tasirin kristal na polymer, halayen ballistic da girgiza da haɓaka ƙirar ƙa'idar da ta dace.
Binciken da aka yi a baya kan abubuwan da ke damun PTFE kadan ne aka buga.Wasu bincike game da kaddarorin masu rarrafe sun wanzu, amma dangane da lalacewar injiniyanci, nassoshi shida ne kawai suka zo ga hankalin marubutan.A cikin 1963, Davies ya buga takarda kan haɓaka tsarin mashaya Split-Hopkinson.A matsayin wani ɓangare na wannan rahoto, an gabatar da matsananciyar zafin jiki na ɗaki ɗaya / matsananciyar damuwa don PTFE a z1700 sK1.Matsakaicin nauyin da aka sanya a cikin wannan tsarin shine kawai 3%.Gray da Walley sun buga ƙarin bayanan ƙimar ƙimar polymer akan yanayin zafi.Koo ya buga bayanan damuwa / damuwa don samfurin PTFE na Imperial Chemical Industries wanda ake kira Halon G-80 a cikin 1965.An kuma tattauna a taƙaice tasirin zafin jiki akan amsawar injina.
Lokacin aikawa: Agusta-16-2016