Ucalulo kunye nokusebenza kwebhodi ye-PTFE

Ibhodi ye-Polytetrafluoroethylene (ekwabizwa ngokuba yibhodi ye-tetrafluoroethylene, ibhodi ye-Teflon, ibhodi ye-Teflon) yahlulwe yaziindidi ezimbini: ukubumba nokujika. Yenziwe ngokupholisa. Ibhodi ukujika PTFE yenziwe PTFE nentlaka ngokucinezela, sintering kunye nokuxobuka. Iimveliso zalo zinoluhlu olubanzi lokusetyenziswa kunye neepropathi ezigqwesileyo ezigqibeleleyo: ukumelana nobushushu obuphezulu kunye nobuphantsi (-192 ℃ -260 ℃), ukumelana nokubola (i-asidi eyomeleleyo, i-alkali eyomeleleyo, i-aqua regia, njl. ukuthambisa ajikeleze, non-ukunamathela, Non-ityhefu kunye nezinye iimpawu ezigqwesileyo.

Iphepha le-Polytetrafluoroethylene sisixhobo sepolymer esenziwe yipolymerization ye tetrafluoroethylene. Ubume bayo benziwe lula njenge – [- CF2-CF2-] n-, enozinzo olomeleleyo lwekhemikhali kunye nokumelana (i-polytetrafluoroethylene ekubhekiselwe kuyo njenge-PTFE okanye i-F4, yenye yezinto ezinganyangekiyo nokubola emhlabeni namhlanje. I-King ”ligama eliqhelekileyo le-polytetrafluoroethylene. Luhlobo lweplastikhi enokumelana ngcono nokubola. Ayichaphazeleka ziiasidi ezaziwayo, ialkali, Ukubola kwetyuwa kunye neoksijini akuncedi nkqu nange-aqua regia, yiyo loo nto ibizwa ngokuba yiPlastic King. Ngaphandle kwesodium etyhidiweyo kunye nefluorine engamanzi, iyanyangeka kuyo yonke eminye imichiza.Iyasetyenziswa ngokubanzi kwizinto ezahlukeneyo zokutywina ezifuna ukumelana neeacidi, ialkalis kunye nezinto ezinganyibiliki. ukumelana nobushushu obugqwesileyo (kungasebenza kubushushu obungu-250 ℃ -180 ℃ ixesha elide) .I-PTFE ngokwayo ayinetyhefu ebantwini, kodwa yiPerfluorooctanoate (PFOA), enye yezinto ezisetyenzisiweyo ezisetyenziswayo kwinkqubo yokuvelisa , kucingelwa ukuba ineziphumo ze-carcinogenic.

Ubushushu: -20 ～ 250 ℃ (-4 ～ + 482 ° F), ukuvumela ukupholisa ngokukhawuleza kunye nokufudumeza, okanye ukusebenza kokunye kokupholisa kunye nokufudumeza.

Uxinzelelo -0.1, 6.4Mpa (uxinzelelo olupheleleyo olubi ku-64kgf / cm2) (Fullvacuumto64kgf / cm2)

Ukuveliswa kwayo kusombulule iingxaki ezininzi kwilizwe lam, ipetroleum, amayeza kunye nezinye iinkalo. Polytetrafluoroethylene amatywina, gaskets, gaskets. Amatywina e-Polytrafluoroethylene kunye neefaskthi zenziwe ngokumiswa kwepolytetrafluoroethylene resin. Xa kuthelekiswa nezinye iiplastiki, i-PTFE ineempawu zokumelana neekhemikhali, kwaye isetyenziswe ngokubanzi njengezinto zokutywina kunye nezinto zokugcwalisa. Iimveliso zayo zokubola ezipheleleyo ezimalunga nama-500 degrees celcius ziyi-tetrafluoroethylene, i-hexafluoropropylene kunye ne-octafluorocyclobutane. Ezi mveliso ziya kubola kakhulu ezineegesi ezinobushushu ezinobushushu obuphezulu.

Ukusetyenziswa kwephepha le-PTFE

Iindidi ezahlukeneyo zeemveliso ze-PTFE zidlale indima ebalulekileyo kuqoqosho lwesizwe ezinje ngemveliso yeekhemikhali, oomatshini, i-elektroniki, izixhobo zombane, ishishini lezomkhosi, i-aerospace, ukhuselo lokusingqongileyo kunye neebhulorho. Ibhodi yeTetrafluoroethylene ilungele ubushushu be -180 ℃ ~ + 250 ℃. Isetyenziswa ikakhulu njengezinto zokufakelwa kombane kunye nokufakwa kumdibaniso nemithombo yeendaba, ukuxhasa izilayida, amatywina kaloliwe kunye nezinto zokuthambisa. Ifenitshala yekhabhinethi etyebileyo iyisebenzisa kwimizi-mveliso elula. , Isetyenziswa ngokubanzi kwimichiza, amayeza, izikhongozeli zeshishini ledayi, iitanki zokugcina, iinqaba zokuphendula, imibhobho emikhulu yokufaka izinto zokukhusela; ukuhamba ngenqwelomoya, ezomkhosi kunye nezinye iinkalo zeshishini elinzima; oomatshini, ulwakhiwo, izilayida zebhulorho yezithuthi, izikhokelo; ukuprinta kunye nokudaya, ishishini lokukhanya, amalaphu Izinto zokuncamathela kwishishini, njl.