Polytetrafluoroethylene (PTFE) ndi semi-crystalline fluoropolymer.PTFE imadziwika bwino ndi ntchito yake ngati zokutira zopanda ndodo za miphika yakukhitchini ndi mapoto chifukwa cha kutentha kwapadera komanso kukana dzimbiri.
Kodi Ndi ChiyaniPTFE?
Tiyeni tiyambe kufufuza kwathu kuti PTFE ndi chiyani.Kupereka mutuwo wathunthu, polytetrafluoroethylene ndi polima yopanga yokhala ndi zinthu ziwiri zosavuta;carbon ndi fluorine.Amachokera ku tetrafluoroethylene (TFE) ndipo ali ndi zinthu zapadera zomwe zimapangitsa kuti zikhale zothandiza pazinthu zosiyanasiyana.Mwachitsanzo:
Malo osungunuka kwambiri: Ndi malo osungunuka a 327 ° C, pali malo ochepa kwambiri omwe PTFE ingawonongeke ndi kutentha.
Hydrophobic: Kukana madzi kumatanthauza kuti samanyowa, zomwe zimapangitsa kuti zikhale zothandiza kuphika, kuvala mabala ndi zina.
Chemical inert: Zambiri zosungunulira ndi mankhwala sizingawononge PTFE.
Low coefficient of friction: The coefficient of friction of PTFE ndi imodzi mwazotsika kwambiri zomwe zilipo, kutanthauza kuti palibe chomwe chidzamamatire.
Mphamvu yapamwamba ya flexural: Kukhoza kupindika ndi kusinthasintha, ngakhale kutentha kochepa, kumatanthauza kuti ingagwiritsidwe ntchito mosavuta pazinthu zosiyanasiyana popanda kutaya kukhulupirika kwake.
Kusintha kwa PTFE
PTFE ikhoza kupezeka mu granular, kubalalitsidwa ndi mawonekedwe a ufa wabwino.Semi-crystalline PTFE imakhala ndi kutentha kwakukulu kosungunuka ndi kusungunuka kwa mamasukidwe amphamvu, kumapangitsa kuti mawonekedwe a extrusion ndi jekeseni akhale ovuta.Kukonza kwa PTFE ndikofanana kwambiri ndi kukonza ufa kuposa mapulasitiki achikhalidwe.
Granular PTFE amapangidwa mu madzi-based kuyimitsidwa polymerisation anachita.Utoto wopangidwa ndi granular nthawi zambiri umasinthidwa kukhala mawonekedwe kudzera pakumangirira.PTFE kubalalitsidwa mankhwala amapangidwa chimodzimodzi, ndi anawonjezera dispersing wothandizira.Kubala mankhwala angagwiritsidwe ntchito zokutira PTFE kapena akhoza kukonzedwa mu woonda filimu ndi filimu kuponyera.PTFE ufa amapangidwa mu emulsion polymerisation anachita.Chifukwa ufa wabwino akhoza phala extruded mu PTFE matepi, PTFE chubing, ndi kutchinjiriza waya, kapena ntchito ngati chowonjezera kuonjezera dzimbiri kukana mu zipangizo polymeric.
Mapulogalamu 5 Opambana a PTFE
1. Kugwiritsa ntchito anti-corrosion properties
Rabara, magalasi, aloyi zitsulo ndi zinthu zina zimalephera kukumana ndi zovuta za kutentha, kupanikizika ndi kuyanjana kwa mankhwala chifukwa cha kuwonongeka kwawo pakukana dzimbiri.Komabe, PTFE ali kwambiri odana ndi dzimbiri kukana motero wakhala waukulu zosagwira zipangizo mafuta mafuta, mankhwala, nsalu ndi mafakitale ena.
2. Kugwiritsa ntchito otsika kukangana katundu katundu
Kupaka mafuta sikuli koyenera pazigawo zina zazitsulo, chifukwa mafuta odzola amatha kusungunuka ndi zosungunulira ndipo sagwira ntchito, kapena mankhwala omwe ali m'mafakitale, chakudya, nsalu ndi mafakitale ena ayenera kupewa kuipitsidwa ndi mafuta.Chifukwa chake, pulasitiki ya PTFE, yomwe coefficient of friction ndi yotsika kuposa zinthu zina zolimba zomwe zimadziwika, yakhala chinthu chofunikira kwambiri pakupaka mafuta opanda mafuta (kunyamula katundu) kwa zida zamakina.
3. Kugwiritsa ntchito magetsi ndi zamagetsi
Kutayika kwachilengedwe kochepa komanso kusinthasintha kwapang'ono kwa dielectric kwa zinthu za PTFE kumadzipangitsa kukhala waya wa enameled wa ma mota ang'onoang'ono, ma thermocouples ndi zida zowongolera.Kanema wa PTFE ndiye zida zoyenera zopangira ma capacitor, liner yotchinjiriza wailesi, zingwe zotchingira, ma mota ndi ma thiransifoma, komanso ndi chimodzi mwazinthu zofunika kwambiri pazamlengalenga ndi zida zina zamagetsi zamagetsi.
4. Kugwiritsa ntchito mankhwala achipatala
Expanded PTFE ndi mwangwiro inert ndi kwambiri biologically chosinthika, kotero si chifukwa kukanidwa ndi thupi, alibe zokhudza thupi mavuto pa thupi la munthu, akhoza chosawilitsidwa ndi njira iliyonse, ndipo ali Mipikisano microporous dongosolo.
5. Kugwiritsa ntchito zinthu zotsutsana ndi zomatira
Ndi kupsinjika kotsika kwambiri kwazinthu zilizonse zolimba, PTFE Teflon sichimamatira kuzinthu zilizonse.Komanso, ili ndi kukana kwambiri kutentha kwambiri komanso kutsika.Chotsatira chake, chakhala chikugwiritsidwa ntchito kwambiri pazitsulo zotsutsana ndi zomatira za mapepala osamata.
Ngati muli mu Ptfe Tube, Mutha Kukonda
Zotsatirazi ndikuwonetsetsa kwakukulu kwazinthu zazikulu zamachubu a PTFE:
1. Yosamatira: Ndi inert, ndipo pafupifupi zinthu zonse sizimalumikizana nayo.
2. Kukana kutentha: ferroflurone imakhala ndi kutentha kwambiri.Ntchito zambiri zitha kugwiritsidwa ntchito mosalekeza pakati pa 240 ℃ ndi 260 ℃.Kukana kutentha kwakanthawi kochepa mpaka 300 ℃ ndi malo osungunuka a 327 ℃.
3. Mafuta: PTFE ili ndi coefficient yotsika kwambiri.Mkangano wa coefficient umasintha pamene katundu akutsetsereka, koma mtengo wake umangokhala pakati pa 0.04 ndi 0.15.
4. Kukana kwanyengo: palibe ukalamba, komanso moyo wabwino wosakalamba mu pulasitiki.
5. Yopanda poizoni: m'malo abwinobwino mkati mwa 260 ℃, imakhala ndi inertia yakuthupi ndipo imatha kugwiritsidwa ntchito ngati zida zamankhwala ndi chakudya.
Kugula machubu olondola a PTFE sikuti amangosankha mitundu yosiyanasiyana yamapulogalamu osiyanasiyana.Zambiri kusankha wopanga wodalirika.Besteflon Fluorineplastic Industry Co., Ltd. imakhazikika pakupanga kwapamwamba kwambiriPTFE mapaipi ndi machubukwa zaka 20.Ngati muli ndi mafunso ndi zosowa, chonde omasuka kulankhula nafe kuti mudziwe zambiri zamaluso.
Nkhani Zogwirizana nazo
Nthawi yotumiza: Mar-15-2024