PTFE nsalu, kapena nsalu ya polytetrafluoroethylene, ndi nsalu yogwira ntchito kwambiri yomwe imagwiritsidwa ntchito kwambiri m'madera ambiri chifukwa cha madzi, mpweya, mphepo, ndi kutentha.
Pachimake cha PTFE nsalu ndi polytetrafluoroethylene microporous filimu, amene ali wapadera microporous dongosolo ndi pore kukula kokha 0.1-0.5 microns, amene ndi ang'onoang'ono kwambiri kuposa awiri a madzi molekyulu, koma masauzande lalikulu kuposa madzi nthunzi molekyulu. Choncho, PTFE nsalu akhoza bwino kuletsa malowedwe a m'malovu madzi pamene kulola nthunzi wa madzi kudutsa momasuka, kukwaniritsa kuphatikiza wangwiro madzi ndi mpweya. Nsalu iyi imakhalanso ndi zinthu zabwino zopanda mphepo, ndipo mawonekedwe ake a microporous amatha kuteteza mpweya wabwino, potero kusunga kutentha mkati mwa chovalacho.
1. Basic katundu wa PTFE
PTFE idapangidwa koyamba ndi DuPont m'ma 1940s ndipo imadziwika kuti "King of Plastics" chifukwa chakuchita bwino kwambiri. Maselo a PTFE ndi okhazikika kwambiri, ndipo mphamvu ya mgwirizano pakati pa maatomu a carbon ndi maatomu a fluorine ndi apamwamba kwambiri, zomwe zimapereka PTFE zinthu zotsatirazi:
● Kusalowa madzi:Nsalu za PTFE zili ndi katundu wabwino kwambiri wosalowa madzi, ndipo mamolekyu amadzi sangathe kulowa pamwamba pake, chifukwa chake amagwiritsidwa ntchito popanga zovala ndi zida zopanda madzi.
● Kupuma:Ngakhale zopanda madzi, nsalu za PTFE zimakhala ndi kachipangizo kakang'ono kamene kamalola kuti nthunzi yamadzi idutse, kusunga chitonthozo cha wovalayo. Katunduyu amapanga chisankho choyenera chamasewera akunja ndi zovala zoteteza.
● Chemical resistance:PTFE imagonjetsedwa kwambiri ndi mankhwala ambiri ndipo imakhala yosakhudzidwa ndi zinthu zowononga monga ma asidi, alkali, ndi zosungunulira.
● Kukana kutentha:Nsalu za PTFE zimatha kukhala zokhazikika pakutentha kwambiri, ndipo kutentha kwake kumayambira -200 ° C mpaka +260 ° C, koyenera kumadera otentha kwambiri kapena otsika.
● Koyefit yocheperako:PTFE ili ndi malo osalala kwambiri komanso otsika kwambiri, choncho amagwiritsidwa ntchito m'mafakitale omwe amafunika kuchepetsa kukangana.
● Kukana kukalamba:PTFE imalimbana kwambiri ndi cheza cha ultraviolet ndi zinthu zina zachilengedwe, ndipo sichimakonda kukalamba pambuyo pogwiritsa ntchito nthawi yayitali.
Pakati pawo, chodziwika kwambiri cha PTFE nsalu ndi mankhwala dzimbiri kukana. Ikhoza kukana kukokoloka kwa ma asidi amphamvu, ma alkali amphamvu ndi zinthu zina za mankhwala, choncho amagwiritsidwa ntchito kwambiri mu zovala zapadera monga zovala za nyukiliya, zamoyo ndi zoteteza mankhwala ndi zovala zoteteza mankhwala. Kuphatikiza apo, nsalu ya PTFE imakhalanso ndi antibacterial, antistatic, virus blocking ndi ntchito zina, zomwe zimapangitsa kuti zikhale zofunikira pachitetezo chamankhwala.
Muzochita zenizeni, nsalu ya PTFE imaphatikizidwa ndi nayiloni, poliyesitala ndi nsalu zina kudzera mu njira yapadera yopangira nsalu kuti apange nsalu ziwiri-imodzi kapena zitatu mumodzi. Nsalu yophatikizikayi sikuti imangokhala ndi mawonekedwe abwino a filimu ya PTFE, komanso imakhala ndi chitonthozo ndi kulimba kwa nsalu zina.
2. Minda yogwiritsira ntchito nsalu za PTFE
Chifukwa katundu wapadera wa PTFE nsalu, wakhala ankagwiritsa ntchito m'madera ambiri:
● Zovala zakunja:Nsalu za PTFE nthawi zambiri zimagwiritsidwa ntchito popanga ma jekete opanda madzi ndi mpweya, mathalauza ndi nsapato, zoyenera masewera akunja monga kukwera mapiri ndi skiing.
● Zovala zoteteza mafakitale:Kukaniza kwake kwa mankhwala ndi kutentha kwake kumapangitsa kukhala chinthu choyenera kuvala zovala zotetezera mu mankhwala, petroleum ndi mafakitale ena.
● Zamankhwala:Nsalu za PTFE zimagwiritsidwa ntchito popanga mikanjo ya opaleshoni, zophimba zophera tizilombo toyambitsa matenda ndi zinthu zina zachipatala kuti zitsimikizire kuti malo osabala.
● Zosefera:Kapangidwe ka microporous wa PTFE imapangitsa kuti zinthu zosefera bwino, zomwe zimagwiritsidwa ntchito kwambiri pakuyeretsa mpweya, kuchiritsa madzi ndi zina.
● Zamlengalenga:PTFE kutentha kukana ndi otsika mikangano koyeneka zimagwiritsa ntchito muzamlengalenga, monga zisindikizo ndi kutchinjiriza zipangizo.
3. Chitetezo cha chilengedwe cha nsalu za PTFE
Ngakhale nsalu za PTFE zili ndi zabwino zambiri, kuteteza zachilengedwe kwakopa chidwi kwambiri. PTFE ndi chinthu chovuta kutsitsa, ndipo chidzakhudza chilengedwe chitayidwa. Chifukwa chake, momwe mungabwezeretsere ndikutaya nsalu za PTFE yakhala nkhani yofunika. Pakadali pano, makampani ena akupanga zida zobwezerezedwanso za PTFE kuti achepetse kukhudzidwa kwawo pa chilengedwe.
4. Mwachidule
Nsalu za PTFE zakhala zokondedwa kwambiri pazinthu zambiri zapamwamba chifukwa cha madzi abwino kwambiri, kupuma, kukana mankhwala, kukana kutentha ndi zina. Kaya ndi masewera akunja, chitetezo cha mafakitale, kapena minda yachipatala ndi ndege, nsalu za PTFE zasonyeza ubwino wawo wapadera. Komabe, ndi kuwonjezeka kwa chidziwitso cha chilengedwe, momwe mungathanirane bwino ndi zowonongeka za nsalu za PTFE zidzakhala cholinga cha kafukufuku ndi chitukuko chamtsogolo.
Nthawi yotumiza: Mar-18-2025