Nkhani - FKM Rubber vs PTFE: Ndi zinthu ziti zomwe zili ndi fluorine yabwino kwambiri

Rabala ya fluorine (FKM) ndi thermosetting elastomer, pomwe polytetrafluoroethylene (PTFE) ndi thermoplastic. Zonsezi ndi zinthu zopangidwa ndi fluorine, zozunguliridwa ndi maatomu a fluorine ndi maatomu a carbon, zomwe zimapangitsa kuti zikhale zolimba kwambiri ndi mankhwala. M'nkhaniyi, yankho la polima la TRP limayerekeza zinthu ziwirizi pakati pa FKM ndiPTFEkudziwa chomwe chili chomaliza cha fluorine ndikusankha chomalizaWopanga payipi ya PTFE

Ubwino wa rabara ya FKM ndi PTFE

Chiyambi:

FKM: Ndege panthawi ya Nkhondo Yachiwiri Yapadziko Lonse zinavutika ndi kutuluka kwa zisindikizo za nitrile, zomwe sizinali ndi kutentha kotsika komwe kumafunika pa ntchito zosiyanasiyana. Kusagwira ntchito kwa mankhwala kwa ma bond a fluorocarbon kumatanthauza kuti ma elastomer opangidwa ndi fluorinated, kapena fluoroelastomers, ndi lingaliro lachilengedwe. Chifukwa chake rabara ya FKM inayamba kugulitsidwa mu 1948.

PTFE: Mu 1938, wasayansi wa DuPont, Roy Plancott, adapeza polytetrafluoroethylene mwangozi. Plunkett adayesa ma refrigerant ndipo adawasunga m'masilinda. Chodabwitsa chake n'chakuti, mpweya uwu unasonkhana pamodzi, kusiya chinthu choyera ngati sera, chomwe sichichita ndi mankhwala aliwonse ndipo chimatha kupirira kutentha kwambiri. DuPont adalembetsa mtundu woyamba wa PTFE materials-ptfe mu 1945.

Chigamulo: Kukula kwa PTFE ndi mwangozi wa tsoka losangalatsa, lomwe linapangitsa kuti pakhale chinthu chapadera. Komabe, chinthu chofanana ndi ichi, rabara ya FKM, chinali chofunikira kwambiri m'zaka za nkhondo. Pachifukwa ichi, zopereka zakale za FKM fluoroelastomer zikutanthauza kuti ndi bwino pang'ono pampikisano uwu.

Katundu:

Rabala ya FKM: Rabala ya FKM ili ndi ma bond amphamvu a carbon-fluorine, zomwe zimapangitsa kuti ikhale yolimba kwambiri, yolimba kutentha komanso yolimba. FKM ili ndi ma bond osiyanasiyana a carbon-hydrogen (omwe amalumikizana ndi kutentha kofooka komanso kukana mankhwala), koma imakhalabe ndi kukana mankhwala kwambiri kuposa ma elastomer ena ambiri.

PTFE: Polytetrafluoroethylene imapangidwa ndi unyolo wa maatomu a kaboni, wokhala ndi maatomu awiri a fluorine pa atomu iliyonse ya kaboni. Maatomu a fluorine awa amazungulira unyolo wa kaboni kuti apange molekyulu wokhuthala wokhala ndi chomangira champhamvu kwambiri cha kaboni-fluorine komanso kapangidwe ka polima, zomwe zimapangitsa PTFE kukhala yopanda mphamvu ku mankhwala ambiri.

Chigamulo: Kutengera kapangidwe kake ka mankhwala, PTFE ilibe ma bond a carbon-hydrogen, zomwe zimapangitsa kuti ikhale yopanda mankhwala kuposa FKM (ngakhale FKM ikadali yolimba kwambiri ndi mankhwala). Pachifukwa ichi, PTFE ndi mthunzi wa FKM mu gawo lino.

Ubwino:

FKM:

Kutentha kwakukulu (-45°C-204°C)

Kukana kwabwino kwambiri kwa mankhwala

Kuchuluka kwambiri, kapangidwe kabwino

Kapangidwe kabwino ka makina

Kodi ingapangidwe kuti ichepetse kuphulika, CIP, SIP?

PTFE:

Kukana kutentha kwakukulu (-30°C mpaka +200°C)

Mankhwala osagwira ntchito

Kuteteza magetsi kwabwino kwambiri

Yozizira kwambiri komanso yosatentha

Chosamatirira, chosalowa madzi

Coefficient of friction ndiyo yaying'ono kwambiri pakati pa zinthu zonse zolimba

Chigamulo: N'zosatheka kuwalekanitsa mozungulira uno. FKM imapereka kukana kutentha kwambiri, koma siyimafika pamlingo wa PTFE pankhani ya kukana mankhwala. Ndipo PTFE siilimbana ndi kutentha kwambiri, koma imapereka njira zambiri zosamatirira.

Zoyipa:

FKM:

Kodi idzatupa mu solvent yokhala ndi fluorine?

Sizingagwiritsidwe ntchito ndi zitsulo za alkali zosungunuka kapena za gasi

Mtengo wake ndi wokwera kuposa ma fluorocarbon ena

Kusankha FKM yolakwika pa pulogalamuyo kungayambitse kulephera mwachangu

Magiredi otsika kutentha angakhale okwera mtengo

PTFE:

Mphamvu yochepa komanso kuuma

Sizingatheke kusungunuka

Kukana kwa kuwala kwa dzuwa

Kuuma kwa High Shore kumapangitsa kuti PTFE ikhale yovuta kutseka

Mphete za Ptfe zili ndi chiwopsezo chachikulu cha kutayikira kuposa ma elastomer ena

Kusakhazikika bwino kumapangitsa kuti kuyika zisindikizo zingapo kukhale kosatheka

Chigamulo: Kawirikawiri, rabara ya FKM yapambana mpikisanowu chifukwa cha mphamvu zake zapamwamba, kusinthasintha kwake, komanso kuthekera kwake kotseka. Zachidziwikire, ngati palibe china koma chisindikizo chosagwira ntchito bwino cha mankhwala sichikwanira, ndiye kuti PTFE ndi chisankho chabwino. Komabe, FKM imapereka kusinthasintha kwakukulu m'mbali zonse!

Mapulogalamu:

FKM:

Magalimoto

Kukonza mankhwala

Mafuta ndi gasi

Makina olemera

Zamlengalenga

Ena ambiri

PTFE:

Zipangizo zopangira mankhwala

Mavavu

Kutengera mankhwala

Ma diaphragm a pampu

Chigamulo: Ndi nkhondo ina yoopsa! FKM ili ndi mitundu yosiyanasiyana ya ntchito, ndipo ingagwiritsidwe ntchito pa ntchito zina zolemera kwambiri. Komabe, ngakhale kuti ili ndi zofooka, zipangizo za PTFE zimapereka yankho lomaliza pa ntchito zovuta kwambiri zokhudzana ndi kupanikizika kwakukulu, kutentha ndi mankhwala owononga.

Mtengo:

Rabala ya FKM ndi chinthu chapamwamba kwambiri chifukwa cha kapangidwe kake ka mankhwala komanso kukana mankhwala ena. Ngati simukuganizira za makhalidwe ake a mankhwala ndi kukana kutentha, mutha kusankha elastomer yotsika mtengo.

PTFE: Zipangizo za PTFE nazonso ndi zapamwamba kwambiri. Mofananamo, ngati kutentha, kupanikizika, ndi mankhwala owononga omwe amagwiritsidwa ntchito pogwiritsira ntchito kwanu sapitirira milandu yoopsa kwambiri, ndiye kuti njira zina zotsika mtengo zingakhale zabwino. Kuti mupeze magwiridwe antchito abwino kwambiri otsekera, PTFE imalumikizidwa ku elastomer core kuti ipereke kukana kupsinjika.

Chigamulo: FKM ndi PTFE zonse ndi zinthu zapamwamba pazifukwa zomveka. Zipangizo zonsezi zili ndi makhalidwe apadera, zomwe zimafotokoza mtengo wopangira. Komabe, muyenera kukumbukira kuti pa ntchito zovuta kwambiri, zonse ziwiri zimapereka mawonekedwe apadera. Pankhaniyi, mumapeza zomwe mumalipira, ndipo njira zina zotsika mtengo nthawi zambiri zimalephera mwachangu. Izi pamapeto pake zimakhala zachuma cholakwika.

Zotsatira: Kawirikawiri, kusinthasintha kwa FKM kumapatsa mwayi mu mpikisano wongoyerekeza uwu. Pomaliza, zinthu zonse ziwirizi zomwe zili ndi fluorine zimapereka kukana kwapadera kwa mankhwala ndi kukana kutentha. Komabe, monga pulasitiki, PTFE ndi yolimba kuposa FKM; zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito kwambiri potseka pomwe mankhwala opanikizika kwambiri ndi owononga ndiye nkhawa yayikulu. Kugwiritsa ntchito kwakukulu kwa FKM ngati chinthu chotseka kwatsimikizira kupambana kwake!

Tikukhulupirira kuti kufananiza kwa mphira wa FKM ndi PTFE kudzakupatsani kumvetsetsa bwino makhalidwe osiyanasiyana a chinthu chilichonse. Ndikofunika kutsindika kuti njira yabwino yosankhira chinthu choyenera kugwiritsa ntchito ndikulankhula ndi katswiri yemwe angakuuzeni mitundu yosiyanasiyana ya zinthuzo ndikufanizira yankho labwino kwambiri la ntchito yanu.

Zomwe zili pamwambapa zikunena za mawu oyamba okhudzana ndi FKM ndi PTFE, ndikukhulupirira kuti nkhaniyi ingakuthandizeni, ndife akatswiri ochokera ku China.Opereka ma payipi a PTFE, welcome to consult our products and please freely contact us at sales 07@zx-ptfe.com