PTFE ili ndi zinthu zabwino kwambiri monga kusagwira ntchito kwamankhwala, kukana kutentha (zonse zapamwamba ndi zotsika), mphamvu zotchinjiriza zamagetsi, kugunda kocheperako (static 0.08 ndi dynamic 0.01), ndi katundu wosakhazikika pa kutentha kwakukulu (260 mpaka þ260 C).Ili ndi kachulukidwe mumtundu wa 2.1e2.3 g/cm3 ndi kusungunula mamasukidwe amphamvu mumtundu wa 1e10 GPa persecond.Kulemera kwa molekyulu ya PTFE sikungayesedwe ndi njira zokhazikika.M'malo mwake, njira yosalunjika imagwiritsidwa ntchito poyesa kulemera kwa maselo.Standard specific gravity (SSG) ndi mphamvu yokoka ya chip yomwe imakonzedwa motsatira ndondomeko yokhazikika.Mfundo yaikulu ndi yakuti kulemera kwa maselo a PTFE kumawonekera kwambiri, motero kumapereka makhalidwe apamwamba a SSG.
PTFE yomwe sinasungunuke m'mbuyomo ili ndi crystallinity ya 92e98%, kusonyeza mawonekedwe a maselo ozungulira komanso opanda nthambi.Ikafika pa 342 C, imasungunuka kuchoka ku mtundu woyera wachalk kukhala gel owoneka bwino.Gawo lachiwiri losungunuka la PTFE ndi 327 C chifukwa silimayambiranso mofanana ndi lisanayambe kusungunuka.
Kusintha kwa dongosolo loyamba ndi lachiwiri kwanenedwa kwa PTFE.Kusintha komwe kuli pafupi ndi kutentha kwa chipinda kumakhala kothandiza chifukwa cha kukhudzidwa kwa kukonzedwa kwa zinthuzo.Pansi pa 19 C makina a crystalline a PTFE ndi pafupifupi triclinic yangwiro.Pamwamba pa 19 C, cell cell imasintha kukhala hexagonal.M'kati mwa 19e30 C, zigawo za unyolo zimakula mopanda dongosolo ndipo njira yosankhidwa ya crystallographic imasowa, zomwe zimapangitsa kuti pakhale kuwonjezeka kwakukulu kwa voliyumu yeniyeni ya PTFE (1.8%) yomwe iyenera kuganiziridwa poyesa miyeso ya Marticles yopangidwa kuchokera ku mapulasitiki awa.
PTFE ndiye polima wosagwirizana ndi mankhwala pakati pa thermoplastics.Kupatulapo kumaphatikizapo zitsulo zosungunuka za alkali, fluorine wa gaseous pa kutentha kwambiri ndi kupanikizika, ndi mankhwala ochepa a halogenated monga chlorine trifluoride (ClF3) ndi oxygen difluoride (OF2).Mankhwala ena ochepa adanenedwa kuti akuukira PTFE kapena pafupi ndi kutentha kwake kwapamwamba.PTFE imakhudzidwa ndi 80% sodium kapena potaziyamu hydroxide ndi maziko ena amphamvu a Lewis kuphatikiza ma hydrides azitsulo.
Makina a PTFE nthawi zambiri amakhala otsika poyerekeza ndi mapulasitiki aumisiri pa kutentha kwa chipinda.Kuphatikiza ndi zodzaza ndi njira yothanirana ndi kuchepa uku.PTFE ali zothandiza mawotchi katundu ntchito yake kutentha osiyanasiyana.
PTFE ili ndi zinthu zabwino kwambiri zamagetsi monga kukana kwamphamvu kwambiri, kutsika kwa dielectric (2.1), komanso kutsika kwapang'onopang'ono.Dielectric constant and dissipation factor imakhalabe yosasinthika pamitundu ya 40 mpaka 250 C ndi 5 Hz mpaka 10 GHz.Mphamvu yakuwonongeka kwa dielectric (nthawi yochepa) ndi 47 kV/mm kwa filimu ya 0.25-mm-thick.Mphamvu zowonongeka kwa dielectric zimalimbikitsidwa ndi kuchepa kwa voids mu PTFE, zomwe zimakhudzidwa ndi njira yopangira.PTFE imakhudzidwa ndi ma radiation, ndipo kuwonongeka kwa mpweya kumayambira pa mlingo wa 0.02 Mrad.
Nthawi yotumiza: Apr-14-2018