Ifilimu ye-PTFE ingafinyelela ezingeni le-DIN4012 lokuvikela umlilo elijwayelekile izinga le-B1, izinga lokushisa elincibilikayo lingafinyelela ku-200 ℃, futhi akulula ukubamba umlilo.Isisindo esilula, i-ductility enhle, amandla acindezelayo aphezulu, akulula ukudabula.Impilo ende yesevisi, engaphansi kweminyaka engama-30, impahla eluhlaza eyanelisayo yezakhiwo zophahla ezikhiphekayo ezinezendlalelo ezimbili.Ngenxa yokuthi ifilimu ye-PTFE ivala uchungechunge lwesakhiwo samangqamuzana ngama-athomu e-fluorine, amandla ayo okumunca ezinye izinto zamakhemikhali abuthakathaka kakhulu.Emhlabeni omkhulu, ingaphezulu lefilimu ye-PTFE lilinganiselwa ku-185N/M, impahla eluhlaza iphansi, futhi ayinamatheli.
Ngakho-ke, amafilimu e-PTFE ikakhulukazi abonisa izakhiwo ezinhle zokuzihlanza kanye nokumelana namanzi.Ifilimu ye-Teflon yinto eluhlaza ye-Teflon-coated glass fiber.I-PTFE ithambile kakhulu esimweni esiqinile.I-coating idinga ukuncibilika bese ifakwa ku-fiberglass.Izinga lokushisa elincibilikayo lingaphezu kuka-400 ℃, futhi imvamisa yokumboza idinga izikhathi ezingaba ngu-10.Kulesi sixhumanisi, i-fiber yengilazi izophenduka iphuzi ngenxa yokushisa okuphezulu, futhi ukugqoka okuvame kakhulu, umbala onzima kakhulu.Ngakho-ke, impahla yefilimu ye-PTFE polytetrafluoroethylene isanda kukhiqiza umbala onsundu.Nokho, impahla yefilimu ye-PTFE polytetrafluoroethylene ingagaya futhi imunce imisebe ye-ultraviolet evela elangeni.
Ifilimu ye-Teflon ayikwazi ukunamathiselwa.Kusukela ekuhlaziyweni kwezakhiwo zayo ezibonakalayo, kunezizathu ezilandelayo ezibalulekile: indawo ephansi, ubukhulu bezinhlayiyana ezinkulu, ukuhlaziywa okuhle kokuzinza kwamakhemikhali, isakhiwo esivumelana kakhulu sefilimu ye-polytetrafluoroethylene, kanye nenani eliphansi le-SP lepharamitha ye-solubility yefilimu ye-polytetrafluoroethylene.Ingaphezulu liphansi, futhi ukusekelwa kwendawo endaweni ebalulekile ngokuvamile akukukhulu.I-PTFE inokushuba okubheke phambili okuphakathi kobuso okungu-118 degrees, ukushuba kwesimo sobuso okungemuva okungamadigri angu-91, kanye nokungezwani kobuso okungu-104 degrees.Zonke izinto zokusetshenziswa zinkulu futhi ukungezwani kobuso kuphezulu.Ibanga lokuthambisa lincane, okungukuthi ukunamatheliswa kahle nokunamathela okunganele.Ifilimu yepulasitiki ye-Teflon emanzi, ngakho-ke akukho ukunamathela okuhle kusayizi wokusanhlamvu we-Teflon, ukuzinza okuhle kwamakhemikhali okuhlaziya, ukuvuvukala kwe-teflon nokuncibilika konke kune-crystalline polymers akukwazi ukumbozwa phezu kwefilimu yepulasitiki ye-Teflon yamaketanga aqinile e-polymer macromolecular ngaphezulu.
Isikhathi sokuthumela: Aug-01-2022