Wazini nge-PTFE?

Yini i-PTFE?

I-Polytetrafluoroethylene (PTFE) iwuhlobo lwe-polymer eyenziwe nge-tetrafluoroethylene njenge-monomer. Inokumelana okuhle kakhulu nokushisa nokubanda futhi ingasetshenziswa isikhathi eside ku-180 ~ 260 º C. Le nto inezici zokumelana ne-asidi, ukumelana ne-alkali nokumelana nezinyibilikisi ezihlukahlukene zezinto eziphilayo, futhi cishe ayincibiliki kuzo zonke izincibilikisi. Ngesikhathi esifanayo, i-polytetrafluoroethylene inezici zokumelana nokushisa okuphezulu, futhi i-coefficient yayo ye-friction iphansi kakhulu, ngakho-ke ingasetshenziselwa ukugcoba, futhi ibe i-coating efanelekile yokuhlanza kalula ungqimba lwangaphakathi lwamapayipi amanzi. I-PTFE ibhekisela ekwengezweni kwe-PTFE enamathelayo ngaphakathi kwejoyinti lerabha elivamile le-EPDM, elimhlophe kakhulu.

Indima ye-PTFE

I-PTFE ingavikela ngempumelelo amalunga enjoloba ku-asidi eqinile, i-alkali eqinile noma uwoyela wezinga lokushisa eliphezulu nokunye ukugqwala kwemidiya.

Inhloso

• Isetshenziswa embonini kagesi nanjengesendlalelo sokugxilisa, ukumelana nokugqwala nokungagugi kwamandla kanye nemigqa yesignali ku-aerospace, ezondiza, zikagesi, izinsimbi, ikhompuyutha nezinye izimboni. Ingasetshenziselwa ukwenza amafilimu, amashidi amashubhu, izinduku, ama-bearings, ama-gaskets, ama-valve, amapayipi amakhemikhali, ukufakwa kwamapayipi, izinsimbi zesitsha semishini, njll.
• Isetshenziswa emkhakheni wezinto zikagesi, imboni yamakhemikhali, izindiza, imishini kanye nezinye izinkambu ukufaka esikhundleni se-quartz glassware ukuze kuhlaziywe amakhemikhali ahlanzekile kanye nokugcinwa kwama-acids ahlukahlukene, ama-alkali nezinyibilikisi ze-organic emikhakheni yamandla e-athomu, umuthi, i-semiconductor. nezinye izimboni. Ingenziwa ibe izingxenye zikagesi ezifakwayo eziphakeme kakhulu, izintambo eziphezulu zezintambo kanye namashefa ekhebula, izinto zamakhemikhali ezikwazi ukumelana nokugqwala, amapayipi kawoyela amelana nokushisa okuphezulu, izitho zokwenziwa, njll. amafutha, njll.
• I-PTFE imelana nezinga lokushisa eliphezulu kanye nokugqwala, inokufakwa kahle kakhulu kukagesi, ukumelana nokuguga, ukumuncwa kwamanzi aphansi, nokusebenza okuhle kakhulu kokuzigcobisa. Kuyimpushana yokugcoba yendawo yonke elungele imidiya ehlukahlukene, futhi ingagcotshwa ngokushesha ukuze yakhe ifilimu eyomile, engasetshenziswa esikhundleni se-graphite, i-molybdenum nezinye izinto zokuthambisa ezingaphili. Kuyi-ejenti yokukhulula elungele ama-polymers we-thermoplastic kanye ne-thermosetting, enekhono elihle lokuthwala. Isetshenziswa kabanzi embonini ye-elastomer nenjoloba nasekuvimbeleni ukugqwala.
• Njengesigcwalisi se-epoxy resin, singathuthukisa ukumelana nemihuzuko, ukumelana nokushisa kanye nokumelana nokugqwala kokunamathela kwe-epoxy.
• Isetshenziswa kakhulu njenge-binder kanye ne-filler ye-powder.

Izinzuzo ze-PTFE

• Ukumelana nokushisa okuphezulu - izinga lokushisa elisebenzayo lifika ku-250 ℃
• Ukumelana nokushisa okuphansi - ukuqina okuhle kwemishini; Ngisho noma izinga lokushisa lehlela ku-196 ℃, ubude obungu-5% bungagcinwa.
• Ukumelana nokugqwala - kumakhemikhali amaningi nezincibilikisi, ayisebenzi futhi imelana nama-asidi aqinile nama-alkali, amanzi kanye nezincibilikisi ezihlukahlukene eziphilayo.
• Ukumelana nesimo sezulu - kunempilo engcono kakhulu yokuguga yamapulasitiki.
• Ukugcotshwa okuphezulu yi-coefficient ephansi yokungqubuzana phakathi kwezinto eziqinile.
• Ukunganamatheli - ukuqina okuncane kwendawo yezinto eziqinile futhi akunamatheli kunoma iyiphi into.
• Non-toxic - Ine-inertia ye-physiological, futhi ayinakho ukusabela okubi ngemva kokufakelwa isikhathi eside njengemithambo yegazi yokwenziwa nezitho.
• Ukufakwa kukagesi - kungamelana no-1500 V high voltage.