Ngaba i-PTFE inokuphinda isetyenziswe?

Iiplastiki ze-PTFE (i-Polytetrafluoroethylene) ziyi-opaque ngokubanzi, kwaye zisisithintelo esihle kakhulu kwigesi, ukufuma, kunye nokuchasana nobushushu.PTFEibonisa ukuxhathisa okumangalisayo kweekhemikhali kwaye ayinyibiliki kuzo zonke izinyibilikisi ezaziwayo.Ihlaselwa kuphela yintsimbi enyibilikisiweyo yealkali kunye nefluorine kumaqondo obushushu aphezulu.I-PTFE inokumelana okugqwesileyo kwiiasidi, iialkali kunye nezinyibilikisi.I-lubricous kakhulu, kunye ne-coefficient ephantsi kwayo nayiphi na i-polymer.Iplastiki enekhemikhali engasebenziyo kulula ukuyicoca kwaye inokumelana nomatshini okhethekileyo phantsi kweemeko ezigqithisileyo.Ukongeza, i-PTFE i-autoclavable kwaye ayinakutsha.

I-PTFE ayinayo isimboli yekhowudi yokurisayikilisha.Nangona kunjalo, i-PTFE inokuphinda isetyenziswe kwezinye iimveliso ezininzi.I-PTFE ehlaziyiweyo ingasetyenziselwa iintonga, iityhubhu, iteyiphu nokunye.

I-Polytetrafluoroethylene (PTFE) yimathiriyeli eyenziwe ngengozi eyaqanjwa ngempazamo ekupheleni koo-1930.Kwakuxa i-chemist yayizama ukuphuhlisa uhlobo olutsha lwe-perfluorethylene-based refrigerant.Kunokuba iphumelele i-chlorofluorocarbon, isazinzulu safumanisa ukuba i-perfluorethylene esetyenzisiweyo kwinkqubo yasabela ngomxholo wentsimbi yesikhongozeli sayo kunye ne-polymerized phantsi koxinzelelo.

Esi sixhobo esitsha sasasazwa kwinqanaba lezorhwebo kwaye ekugqibeleni saziwa ngokuba yi-PTFE.Emva kwamashumi eminyaka kamva, yaziwa ngokuba yi-kitchenware yokuqala enganamatheli.

Isetyenziswa phi i-PTFE?

Isetyenziselwa usetyenziso apho iindawo ezityibilikayo zifuneka njengeebheringi ezicacileyo, iigiyeri, kunye neepleyiti zesilayidi.I-PTFE ewumgubo isetyenziswa kwimixholo yepyrotechnic njenge oxidizers kunye nesinyithi esingumgubo.PTFE ikwasetyenziswa kwiradiometry optical.Amaxwebhu enziwe kwi-PTFE asetyenziswa njengeentloko zokulinganisa kwi-spectroradiometers kunye ne-radiometers ye-broadband ngenxa yokukwazi kwayo ukusasaza ukukhanya okuhambisa phantse ngokugqibeleleyo.I-PTFE ikwasetyenziselwa ukugquma iintlobo ezithile zeembumbulu eziqinisiweyo ukunqanda ukuguga okwandileyo kumpu wompu onokuthi ube nesiphumo Iprojectile enzima ngakumbi.Ikwasetyenziswa imathiriyeli yaselabhoratri efana nezikhongozeli, iistirrers, kunye netyhubhu.Isetyenziswa njenge tape yotywino lwemisonto kwizicelo zemibhobho.

Kutheni i-PTFE isetyenziswa kumacandelo e-elektroniki?

I-PTFE ineempawu ezikhethekileyo zokugquma ezenza ukuba zilungele izinto zombane.Ayina-conductive, intsingiselo;iyaxhathisa kwiindawo zombane eziphezulu.Iyakwazi ukumelana nobushushu, amanzi, kunye nokudleka kweekhemikhali.Ikwasetyenziselwa ukuvelisa izixhobo zelabhoratri kunye nezincedisi ezidibana ne-hydrofluoric acid.

I-PTFE inepropati ephantsi kakhulu ekhuphisanayo.Oku kwenza ukuba i-PTFE ilungele iindawo zokuvelisa ezifuna ukuxhathisa ukukhuhlana okufana neebheringi zebhola kunye neegiya.

Ezinye iimpawu ze-PTFE

• * Isithintelo esihle kakhulu kwirhasi, ukufuma kunye nobushushu
• *inokumelana neekhemikhali okumangalisayo kwaye ayinyibiliki kuzo zonke izinyibilikisi ezaziwayo
• *ihlaselwe kuphela ziintsimbi zealkali ezinyibilikisiweyo kunye nefluorine kumaqondo obushushu aphezulu
• *inokumelana okugqwesileyo kwiiasidi, ialkali kunye nezinyibilikisi
• *lubricous kakhulu
• *inokuvalwa nge-autoclave, igesi, ubushushu obomileyo kunye nesibulali-ntsholongwane sekhemikhali
• *Ububi bokusebenzisa i-PTFE

Olunye lolona setyenziso luqhelekileyo lwe-PTFE yeyokupheka.Iipani ze-PTFE azinakusetyenziswa ukuba ubona imikrwelo okanye iintanda kuyo.Ayinakusetyenziswa emva kokuwohloka kwayo.Iqala ukonakala emva kokuba iqondo lobushushu besixhobo sokupheka lifikelela kuma-260 ˚C kwaye libole ngaphezulu kwe-350˚C.Oku kuthotywa kwemveliso kungabulala iintaka kwaye kunokubangela iimpawu ezifana nomkhuhlane ebantwini.

Imiba ekusetyenzisweni ngokutsha kwe-PTFE

Njengazo naziphi na ezinye imathiriyeli, ukurisayikilishwa kwehlise iipropathi zemathiriyeli yokuqala.Kwi-PTFE, uninzi lweepropathi zayo zilungile ukuba isenokwenzeka emva kokurisayikilishwa.Kwezinye iiphononongo, i-5-10% ye-ration isenokuvumela izinto ukuba zidlule njenge-PTFE esulungekileyo.Omnye wemiba ephambili nge-PTFE ehlaziyiweyo kukuba ayisebenzi kusetyenziso lwexesha elide.

Kodwa, ukuyishwankathela yonke, i-PTFE esetyenzisiweyo iyakuhlala ineempawu ezisezantsi kwi-PTFE kwaye ayinakungqinelana ekuhambeni kwexesha.Kuhlala kungcono ukulindela ukuba inokuthotywa kwaye inexabiso eliphantsi kancinci kunelokuqala.