PTFE Tensile Properties ndi High Voltage Use

Polytetrafluoroethylene (PTFE) ndi chinthu chopangidwa mwangozi chakumapeto kwa zaka za m'ma 1930 pomwe katswiri wa zamankhwala akuyesera kupanga mtundu watsopano wa refrigerant wa perfluorethylene.M'malo mokwaniritsa chlorofluorocarbon, wasayansiyo adadabwa kupeza kuti perfluorethylene yomwe idagwiritsidwa ntchito pochita izi idachita ndi chitsulo chomwe chili m'chidebe chake ndikupangidwa ndi polymer mopanikizika.

Tensile Properties:Kupanikizika kwapang'onopang'ono ndi kusweka kwamphamvu kumagwiritsidwa ntchito mozama pazolinga zowongolera, koma ndi kuchuluka kosakwanira pazolinga zopangira pazifukwa ziwiri: choyamba, komanso chofunikira kwambiri, PTFE sayenera kugwiritsidwa ntchito pazovuta zomwe zimapitilira zokolola (pomwe curve-deformation curve imakhala ndi kusintha kosiyana kwa otsetsereka) ndipo kachiwiri, malo ophwanyika amadalira mawonekedwe a chitsanzo ndipo kotero siwothandiza kulosera za khalidwe muzochita.

Ma curve owonjezera owonjezera omwe amapezedwa ndi zitsanzo za PTFE amadalira crystallinity, kulemera kwa maselo, kukula, mawonekedwe komanso mwina mapangidwe a tinthu tating'onoting'ono komanso kuopsa kwa zolakwika zomwe zatsalira pambuyo popanga.Kuphatikiza apo, zimadalira, monga momwe zimakhalira ndi thermoplastics, pa kutentha kwa mayeso ndi kuchuluka kwa zovuta.Chifukwa cha zovuta izi deta yomwe ili pano ikhoza kuwonetsa machitidwe onse.The general trends of behaviour in tension for PTFE monga ntchito ya kutentha.Awa ndi ma curve omwe amatengera kupsinjika kwa zokolola, ngakhale mocheperako kuposa momwe zimakhalira ndi zida zina zamapulasitiki.

Kugwiritsa Ntchito Magetsi Apamwamba a PTFE:Pankhani ya ntchito voteji mkulu wakhala kudziwika kwa nthawi yaitali kuti pamaso kutulutsa pamwamba kulephera kumachitika ndi kukokoloka, monga PTFE ndi zinthu nontracking.Parr ndi Scarisbrick afananiza khalidwe la mitundu yosiyanasiyana ya ma polymeric insulators ndi kuyesa kwa IEE kutsatira pogwiritsa ntchito electrolyte, komanso kuyesa kwa ASTM fumbi-fog test (D21 32-62T).Iwo anapeza kuti PTFE anali mmodzi wa kalasi kukokoloka amene anasonyeza moyo wautali, mwachitsanzo > 1000 maola mu fumbi-chifunga mayeso.Choncho PTFE ali zothandiza pamwamba makhalidwe masuku pamutu ntchito panja.

Pakutchinjiriza kochulukirapo kumafunika kupanga mapangidwe apamwamba kwambiri kuti apange zomangira zotsika kwambiri komanso kutsekeka kwamkati komwe kumafunidwa ndi magetsi okwera kwambiri.Mayesero pogwiritsa ntchito zowunikira zamagetsi amatha kupangidwa kuti atsimikizire kumasuka kuzinthu zowononga zomwe zitha kuchitika mu voids.Kapenanso ndi zotheka kuchepetsa kukhetsa mwa impregnating ndi PTFE ndi dielectric zamadzimadzi kapena ndi mpweya wothamanga kwambiri kuti mudzaze, osachepera pang'ono, chilichonse voids mu polima.Zotsatira zake, mphamvu zamphamvu za dielectric zopezedwa pamayeso opangidwa mumafuta zitha kukhala zokwera molakwika kwa PTFE yopangidwa molakwika chifukwa cha kulowetsedwa kwa voids iliyonse yomwe ilipo ndi mafuta.