Cov roj hmab fluorine (FKM) yog ib qho thermosetting elastomer, thaum polytetrafluoroethylene (PTFE) yog ib qho thermoplastic. Ob qho tib si yog cov khoom siv fluorinated, nyob ib puag ncig los ntawm fluorine atoms los ntawm carbon atoms, uas ua rau lawv tiv taus tshuaj lom neeg heev. Hauv tsab xov xwm no, TRP polymer kua piv ob qho khoom siv ntawm FKM thiabPTFEtxhawm rau txiav txim siab seb qhov twg yog cov khoom siv fluorinated kawg thiab xaiv qhov kawgPTFE hose chaw tsim khoom
Cov txiaj ntsig ntawm FKM roj hmab thiab PTFE
Keeb kwm:
FKM: Cov dav hlau thaum Tsov Rog Thoob Ntiaj Teb Zaum Ob tau raug kev txom nyem los ntawm kev xau ntawm cov foob nitrile, uas tsis muaj kev ua haujlwm kub qis uas xav tau rau ntau yam kev siv. Qhov tsis muaj zog ntawm cov tshuaj fluorocarbon txhais tau tias cov fluorinated elastomers, lossis fluoroelastomers, yog qhov xaus lus ntuj. Yog li FKM roj hmab pib ua lag luam hauv xyoo 1948
PTFE: Xyoo 1938, tus kws tshawb fawb ntawm DuPont, Roy Plancott, tau tshawb pom polytetrafluoroethylene los ntawm kev sib tsoo. Plunkett tau sim cov tshuaj refrigerants thiab khaws cia rau hauv lub thoob. Ua rau nws xav tsis thoob, cov pa roj no tau sib sau ua ke, tawm hauv qab cov khoom dawb waxy, uas tsis cuam tshuam nrog cov tshuaj lom neeg thiab tuaj yeem tiv taus qhov kub siab heev. DuPont tau sau npe thawj hom ntawm PTFE cov ntaub ntawv-ptfe hauv xyoo 1945.
Kev Txiav Txim: Kev tsim cov PTFE yog ib qho xwm txheej ntawm ib qho hmoov zoo kawg nkaus, uas ua rau muaj ib yam khoom zoo kawg nkaus. Txawm li cas los xij, ib yam khoom zoo kawg nkaus, roj hmab FKM, yog qhov tsim nyog heev thaum lub sijhawm ua tsov rog. Vim li no, keeb kwm ntawm FKM fluoroelastomer txhais tau tias nws zoo dua me ntsis hauv qhov kev sib tw no.
Cov Khoom:
Roj Hmab FKM: Roj Hmab FKM muaj cov pa roj carbon-fluorine muaj zog, ua rau nws muaj tshuaj lom neeg heev, tiv taus cua sov thiab tiv taus oxidation. FKM muaj cov pa roj carbon-hydrogen sib txawv (kev sib txuas nrog cua sov thiab tshuaj lom neeg tsis muaj zog), tab sis tseem muaj zog tiv taus tshuaj lom neeg dua li feem ntau lwm cov elastomers.
PTFE: Polytetrafluoroethylene yog tsim los ntawm ib txoj saw ntawm cov carbon atoms, nrog ob lub fluorine atoms ntawm txhua lub carbon atom. Cov fluorine atoms no nyob ib puag ncig cov carbon saw los tsim ib lub molecule ntom ntom nrog cov carbon-fluorine sib txuas muaj zog heev thiab cov qauv polymer, ua rau PTFE inert rau feem ntau cov tshuaj lom neeg.
Kev Txiav Txim: Raws li lawv cov tshuaj lom neeg sib xyaw ua ke, PTFE tsis muaj cov pa roj carbon-hydrogen bonds, uas ua rau nws tsis muaj zog dua li FKM (txawm hais tias FKM tseem tiv taus tshuaj lom neeg heev). Vim li no, PTFE tsuas yog duab ntxoov ntxoo ntawm FKM hauv qhov kev sib hloov no.
Cov txiaj ntsig:
FKM:
Qhov kub thiab txias dav (-45°C-204°C)
Kev tiv thaiv tshuaj lom neeg zoo heev
Kev ceev ceev, zoo nkauj
Cov khoom siv kho tshuab zoo
Puas yog nws tuaj yeem tsim rau kev tawg decompression, CIP, SIP
PTFE:
Kev tiv taus kub dav (-30 ° C txog + 200 ° C)
Chemically inert
Kev rwb thaiv hluav taws xob zoo heev
Tiv taus txias thiab kub heev
Tsis nplaum, tsis muaj dej
Tus coefficient ntawm kev sib txhuam yog qhov tsawg tshaj plaws ntawm txhua yam khoom khov
Kev Txiav Txim: Nws tsis yooj yim sua kom cais lawv ua ke hauv qhov kev sib tw no. FKM muab kev tiv taus kub ntau dua, tab sis tsis ncav cuag kev ua tau zoo ntawm PTFE hauv kev tiv taus tshuaj lom neeg. Thiab PTFE tsis tshua muaj kev tiv taus kub, tab sis muab ntau txoj hauv kev ntawm cov khoom tsis nplaum
Qhov Tsis Zoo:
FKM:
Nws puas yuav o hauv cov kuab tshuaj fluorinated?
Tsis siv tau nrog cov hlau alkali uas yaj los yog roj
Tus nqi siab dua li lwm cov khoom uas tsis yog fluorocarbons
Kev xaiv FKM tsis raug rau daim ntawv thov tuaj yeem ua rau tsis ua haujlwm sai
Cov qib kub qis tuaj yeem kim
PTFE:
Lub zog qis thiab kev nruj
Tsis tuaj yeem ua tiav yaj
Kev tiv thaiv hluav taws xob tsis zoo
High Shore hardness ua rau PTFE nyuaj rau kaw
Ptfe o-rings muaj qhov xau ntau dua li lwm cov elastomers
Kev tsis sib haum ua rau ntau lub foob tsis yooj yim sua
Kev Txiav Txim: Feem ntau, roj hmab FKM yeej qhov kev sib tw no nrog nws lub zog zoo tshaj plaws, kev ywj pheej thiab kev muaj peev xwm kaw. Tau kawg, yog tias tsis muaj dab tsi tsuas yog lub foob tsis muaj zog txaus, ces PTFE yog qhov kev xaiv zoo. Txawm li cas los xij, FKM muab kev ywj pheej ntau dua hauv txhua yam!
Cov ntawv thov:
FKM:
Tsheb
Kev ua tshuaj lom neeg
Roj thiab roj av
Cov tshuab hnyav
Kev tsav dav hlau
Ntau lwm tus
PTFE:
Cov khoom siv ua tshuaj lom neeg
Cov li qub
Kev thauj tshuaj lom neeg
Cov twj tso kua mis
Kev Txiav Txim: Nws yog lwm qhov kev sib ntaus sib tua tuag taus! FKM muaj ntau yam kev siv, thiab tuaj yeem siv rau qee qhov kev siv hnyav heev. Txawm li cas los xij, txawm tias nws muaj kev txwv, cov ntaub ntawv PTFE muab qhov kev daws teeb meem zoo tshaj plaws rau cov kev siv nyuaj tshaj plaws uas cuam tshuam nrog kev kub siab heev, kub thiab cov tshuaj lom neeg corrosive.
Tus nqi:
Roj hmab FKM yog cov khoom zoo tshaj plaws vim nws cov tshuaj lom neeg muaj pes tsawg leeg thiab tom qab ntawd tiv taus tshuaj lom neeg. Yog tias koj tsis xav txog cov khoom siv tshuaj lom neeg thiab kev tiv taus kub, koj tuaj yeem xaiv cov elastomer pheej yig dua.
PTFE: Cov khoom siv PTFE kuj yog cov khoom zoo. Ib yam li ntawd, yog tias qhov kub thiab txias, siab, thiab cov tshuaj lom neeg uas koom nrog hauv koj daim ntawv thov tsis tshaj qhov xwm txheej hnyav tshaj plaws, ces cov kev xaiv pheej yig dua yuav xav tau. Yuav kom tau txais kev ua haujlwm zoo tshaj plaws, PTFE raug khi rau lub hauv paus elastomer kom muab kev tiv thaiv compression.
Kev Txiav Txim Siab: Ob qho tib si FKM thiab PTFE yog cov khoom zoo rau cov laj thawj zoo. Ob qho tib si ntawm cov ntaub ntawv no muaj cov yam ntxwv tshwj xeeb, uas piav qhia txog tus nqi ntawm kev tsim lawv. Txawm li cas los xij, koj yuav tsum nco ntsoov tias rau cov ntawv thov hnyav, ob qho tib si muab cov yam ntxwv tshwj xeeb. Hauv qhov no, koj tau txais qhov koj them rau, thiab cov kev xaiv pheej yig feem ntau ua tsis tiav sai. Qhov no thaum kawg yog kev lag luam tsis raug.
Qhov tshwm simFeem ntau, qhov yooj ywm ntawm FKM muab qhov zoo dua rau hauv qhov kev sib tw hypothetical no. Thaum kawg, ob qho tib si ntawm cov ntaub ntawv fluorinated no muab kev tiv thaiv tshuaj lom neeg tshwj xeeb thiab kev tiv thaiv kub. Txawm li cas los xij, ua ib lub yas, PTFE yog khov dua li FKM; ua rau nws tsuas yog tsim rau cov ntawv thov sealing hnyav tshaj plaws qhov twg siab siab thiab cov tshuaj lom neeg corrosive yog qhov kev txhawj xeeb tseem ceeb. Qhov kev siv dav dua ntawm FKM ua cov khoom siv sealing tau, zoo, lees paub nws txoj kev yeej!
Peb vam tias qhov kev sib piv ntawm FKM roj hmab thiab PTFE no yuav ua rau koj nkag siab zoo dua txog ntau yam ntxwv ntawm txhua yam khoom siv. Yuav tsum tau hais tias txoj hauv kev zoo tshaj plaws los xaiv cov khoom siv zoo tshaj plaws rau koj daim ntawv thov yog tham nrog tus kws tshaj lij uas tuaj yeem qhia koj txog ntau yam khoom siv thiab phim qhov kev daws teeb meem zoo tshaj plaws rau koj daim ntawv thov.
Cov saum toj no yog hais txog FKM thiab PTFE cov ntsiab lus cuam tshuam, kuv vam tias tsab xov xwm no tuaj yeem pab koj, peb yog los ntawm Tuam Tshoj kev tshaj lijCov neeg muag khoom PTFE hose, welcome to consult our products and please freely contact us at sales 07@zx-ptfe.com
Cov kev tshawb nrhiav ntsig txog ptfe hose:
Lub sijhawm tshaj tawm: Plaub Hlis-16-2021