Kodi PTFE ingagwiritsidwenso ntchito?

Mapulasitiki a PTFE (Polytetrafluoroethylene) nthawi zambiri amakhala opaque, ndipo ndi chotchinga chabwino kwambiri cha mpweya, chinyezi, komanso kukana kutentha.PTFEimasonyeza kukana kwa mankhwala ndipo sisungunuka mu zosungunulira zonse zodziwika.Imawukiridwa kokha ndi zitsulo zosungunuka za alkali ndi fluorine pa kutentha kwakukulu.PTFE imatsutsana kwambiri ndi ma acid, alkalis ndi solvents.Ndi mafuta kwambiri, okhala ndi coefficient yotsika kwambiri ya polima iliyonse.Pulasitiki yopanda mankhwala ndi yosavuta kuyeretsa ndipo imakhala ndi kukana kwapadera pamakina pazovuta kwambiri.Kuphatikiza apo, PTFE ndi autoclavable komanso yosayaka.

PTFE ilibe chizindikiro chake chobwezeretsanso.Komabe, PTFE ikhoza kubwezeredwa muzinthu zina zambiri.Zobwezerezedwanso PTFE angagwiritsidwe ntchito ndodo, chubu, tepi ndi zambiri.

Polytetrafluoroethylene (PTFE) ndi chinthu chopangidwa mwangozi chakumapeto kwa zaka za m'ma 1930.Panali pamene katswiri wa mankhwala anali kuyesa kupanga mtundu watsopano wa refrigerant wopangidwa ndi perfluorethylene.M'malo mokwaniritsa chlorofluorocarbon, wasayansiyo adapeza kuti perfluorethylene yomwe idagwiritsidwa ntchito pochita izi idachitapo kanthu ndi chitsulo chomwe chili mumtsuko wake ndikupangidwa ndi polymer mopanikizika.

Nkhani yatsopanoyi idagawidwa pazamalonda ndipo pamapeto pake idadziwika kuti PTFE.Pambuyo pazaka makumi angapo pambuyo pake, idadziwika kuti khitchini yoyamba yopanda ndodo.

Kodi PTFE imagwiritsidwa ntchito pati?

Amagwiritsidwa ntchito pa ntchito zomwe zigawo zotsetsereka zimafunika ngati ma bearings osavuta, magiya, ndi ma slide plates.Powdered PTFE imagwiritsidwa ntchito muzolemba za pyrotechnic monga oxidizers pamodzi ndi zitsulo za ufa.PTFE imagwiritsidwanso ntchito mu kuwala kwa radiometry.Mapepala opangidwa kuchokera ku PTFE amagwiritsidwa ntchito ngati kuyeza mitu mu spectroradiometers ndi ma radiometer a burodibandi chifukwa cha kuthekera kwake kufalitsa kuwala kotumizira pafupifupi mwangwiro.PTFE imagwiritsidwanso ntchito kuvala mitundu ina ya zipolopolo zolimba kuti zisawonongeke kuchuluka kwa mfuti zomwe zingachitike The harder projectile.Imagwiritsidwanso ntchito zipangizo za laboratory monga zotengera, stirrers, ndi tubing.Imagwiritsidwa ntchito ngati tepi yosindikizira ulusi mu ntchito za plumbing.

Chifukwa chiyani PTFE imagwiritsidwa ntchito pazinthu zamagetsi?

PTFE ili ndi zida zapadera zotetezera zomwe zimapangitsa kuti zikhale zoyenera pazinthu zamagetsi.Ndiwopanda kuchititsa, kutanthauza;imalimbana ndi minda yayikulu yamagetsi.Komanso imalimbana ndi kutentha, madzi komanso dzimbiri.Amagwiritsidwanso ntchito popanga zida za labotale ndi zowonjezera zomwe zimakumana ndi hydrofluoric acid.

PTFE ili ndi katundu wotsika kwambiri.Izi zimapangitsa PTFE kukhala yoyenera kupanga zida zomwe zimayenera kukana kukangana ngati mayendedwe a mpira ndi magiya.

Makhalidwe ena a PTFE

• * Chotchinga chabwino kwambiri cha gasi, chinyezi ndi kutentha
• *ali ndi mphamvu yolimbana ndi mankhwala ndipo sasungunuka mu zosungunulira zonse zodziwika
• *kuukira kokha ndi zitsulo zosungunuka za alkali ndi fluorine pa kutentha kwakukulu
• *ali kwambiri kukana zidulo, alkali ndi solvents
• *mafuta kwambiri
• *itha kukhala chosawilitsidwa ndi autoclave, gasi, kutentha kouma ndi mankhwala ophera tizilombo
• *Zoyipa zogwiritsa ntchito PTFE

Chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri ndi PTFE ndi zophikira.PTFE mapani sangathe kugwiritsidwa ntchito ngati muwona zikanda kapena ming'alu pa izo.Sichingagwiritsidwe ntchito pambuyo powonongeka.Zimayamba kuwonongeka kutentha kwa chophikiracho kukafika pa 260 ˚C ndikuwola pamwamba pa 350˚C.Kuwonongeka kwachilengedwe kumeneku kumatha kupha mbalame ndipo kungayambitse zizindikiro za chimfine mwa anthu.

Nkhani pakubwezeretsanso PTFE

Monga zida zina zilizonse, kubwezeretsanso kunachepetsa zomwe zidayamba.Mu PTFE, zambiri za katundu ndi zabwino kuti akadali zotheka pambuyo yobwezeretsanso.M'maphunziro ena, chakudya cha 5-10% chimalolabe kuti zinthuzo zidutse ngati PTFE yoyera.Imodzi mwa nkhani zazikulu ndi PTFE zobwezerezedwanso ndi kuti si ntchito kwa nthawi yaitali ntchito.

Koma, kunena mwachidule, PTFE yobwezerezedwanso nthawi zonse imakhala ndi zinthu zotsika kwa PTFE ndipo sizingafanane ndi nthawi.Nthawi zonse ndibwino kuyembekezera kuti ikhoza kusokonezedwa komanso kuti mtengo wake ndi wotsika pang'ono kuposa woyamba.