Xav txog kev siv PTFE high-temperature daim kab xev nyob rau hauv cov tshuaj tank liner, ib tug marine cable qhwv, los yog ib tug underwater sealing daim ntawv thov. Daim kab xev yog submerged rau lub lis piam los yog hli. Nws puas yuav tuav? Cov nplaum puas yuav ua tsis tau? Cov fiberglass puas yuav soften?
Cov lus teb tsis yooj yim. PTFE nws tus kheej - 'King of Plastics' - yog tshuaj inert rau ze li ntawm tag nrho cov tshuaj. Tab sis PTFE daim kab xev yog ntau tshaj li PTFE: nws muaj fiberglass substrate thiab lub siab-rhiab nplaum nplaum (PSA) nyob rau sab nraum qab. Cov Cheebtsam no coj txawv txawv heev nyob rau hauv lub sij hawm immersion.
Aokai PTFE tau sim ntau cov kab xev hauv cov kev mob immersion. Kab lus no rhuav tshem cov kev pheej hmoo rau dej, dej ntsev, thiab tshuaj lom neeg daws teeb meem - thiab piav qhia seb hom nplaum twg muaj sia nyob.
Zuag qhia tag nrho - PTFE Substrate muaj zog, Adhesive Tsis muaj zog
Rau PTFE high-temperature tapes nyob rau hauv lub sij hawm ntev immersion, tag nrho cov kev ua tau zoo yuav muab sau tseg raws li:
PTFE puag khoom: Zoo heev - tshuaj inert, tsis-absorbent, dimensionally ruaj khov.
Fiberglass substrate: Vulnerable - tuaj yeem muag hauv dej hauv lub sijhawm ntev.
Adhesive txheej: Lub ntsiab tsis muaj zog - degrades nyob rau hauv ntev raug rau dej, kuab tshuaj, los yog tshuaj.
Cheebtsam |
Kev ua tau zoo hauv qab Immersion |
Hom kev ua tsis tiav |
PTFE txheej |
Zoo heev |
Tsis muaj - tseem inert |
Fiberglass ntaub |
Nruab nrab |
Softening, lub zog poob tom qab lub lis piam / hli |
Silicone PSA |
Ncaj ncees rau cov neeg pluag |
Adhesion poob, o, tev |
Acrylic PSA |
pluag heev |
Kev degradation sai sai hauv dej / cov kuab tshuaj |
Ntev-ntev dej ntsoog txaus ntshai
Yuav ua li cas dej cuam tshuam rau daim kab xev:
Adhesive txheej: Silicone siab-rhiab nplaum nplaum yog tsis muaj zog los ntawm ntev raug rau cov dej molecules. Dej nkag mus rau cov nplaum-substrate interface, txo cov adhesion thiab nws thiaj li ua rau tsis ua tiav. Peel lub zog tuaj yeem poob mus txog 40% tom qab 48 teev ntawm kev tso dej rau qee cov qauv.
Fiberglass substrate: Feem ntau cov lag luam PTFE high-temperature tapes siv fiberglass ntaub impregnated nrog PTFE ua lub substrate. Fiberglass yuav soften nyob rau hauv dej nyob rau lub sij hawm ntev, ua rau ib tug poob ntawm tag nrho cov neeg kho tshuab zog ntawm daim kab xev. Qhov no yog txheej txheem qeeb (lub lis piam mus rau hli) tab sis irreversible.
Thaum twg yog dej immersion txais?
Kev sib cuag luv luv (ntxuav, txaws, ntxuav luv luv) - zoo.
Nruam immersion rau hnub lossis lub lis piam - tsis pom zoo rau cov qauv silicone PSA tapes.
Rau kev siv dej mus tas li, xav txog cov nplaum-dawb PTFE daim kab xev nrog cov khoom siv kho tshuab.
Aokai PTFE qhia cov neeg siv khoom tias tus qauv silicone PSA daim kab xev yog tsim rau cov ntawv thov kev sib cuag nrog dej (xws li, ua zaub mov noj) tab sis tsis yog rau cov dej tsis tu ncua dhau 72 teev. Rau lub sijhawm ntev dua, peb pom zoo kom fluorosilicone nplaum lossis qib tsis muaj nplaum.
Dej ntsev immersion - Muaj kev pheej hmoo siab dua
Piv nrog cov dej ntshiab, dej ntsev ua rau muaj kev hem thawj ntau dua:
Chloride ions nrawm nkag mus thiab puas rau cov nplaum txheej.
Cov dej ntsev ua rau muaj kev cuam tshuam loj dua rau cov fiberglass substrates - cov iav fibers tuaj yeem leaching thiab tsis muaj zog.
Salt crystallization thaum lub voj voog ziab tuaj yeem cuam tshuam cov nplaum nplaum.
Kev pom zoo: Tsis txhob siv cov qauv PTFE daim kab xev rau lub sijhawm ntev dej ntsev (xws li, marine cable wraps, underwater sensors). Siv perfluoropolyether (PFPE) nplaum los yog nplaum-dawb PTFE nrog txhua yam clamping.
Kev daws tshuaj immersion - nyob ntawm tag nrho ntawm Adhesive
PTFE tapes excel hauv tshuaj tiv thaiv - tab sis qhov no feem ntau nyob ntawm hom nplaum. Qhov txaus ntshai nyob rau hauv cov tshuaj immersion sib txawv heev.
Hom nplaum |
Tshuaj tiv thaiv |
Daim ntawv thov pom zoo |
Acrylic PSA |
Tsis zoo - tsis tiv taus cov kua qaub, muaj zog alkalis, lossis feem ntau cov kuab tshuaj organic |
nruj me ntsis txwv tsis pub rau tej tshuaj immersion |
Pa Silicone PSA (nruab nrab) |
Nruab nrab - tiv taus dej, tsis muaj zog acids, tsis muaj zog alkalis, thiab qee cov kuab tshuaj. Ua tsis tiav nyob rau hauv lub sij hawm ntev immersion nyob rau hauv concentrated muaj zog acids, muaj zog alkalis, thiab heev polar solvents (xws li, acetone, MEK) |
Tsim nyog tsuas yog rau lub teeb tshuaj tiv thaiv kev tiv thaiv - tsis yog rau immersion tas li |
Fluorosilicone Hloov PSA |
Zoo - deb superior rau zoo tib yam silicone nyob rau hauv chemical kuj; withstands luv-term immersion |
Zoo tagnrho rau nruab nrab-lub sij hawm immersion (hnub mus rau lub lis piam) thiab nruab nrab los tiv thaiv corrosion tej yam kev mob |
Perfluoropolyether / Fluorine-based Adhesive |
Zoo heev - phim cov tshuaj tiv thaiv ntawm PTFE substrate; NW nyuam qhuav cuam tshuam los ntawm cov tshuaj lom neeg |
Txaus siab rau qhov chaw corrosive hnyav thiab immersion mus ntev (hli). Tus nqi siab dua. |
Pure PTFE daim kab xev (tsis muaj nplaum) |
Superior - tsis muaj cov nplaum uas cuam tshuam nrog; Cov tshuaj tiv thaiv zoo ib yam rau PTFE substrate |
Qhov kev xaiv zoo tshaj plaws rau kev tso kua dej. Yuav tsum tau kho txhua yam (xov sealing, bolt clamping, hlau khi) |
Khoom |
PTFE Substrate |
Adhesive Txheej |
Sau ntawv |
Peel zog |
N/A |
Yuav txo tau li 40% tom qab 48-teev dej immersion (rau UV-kho tau PSA) |
Qhov taw qhia tseem ceeb ntawm daim kab xev tsis ua haujlwm |
Tensile zog |
Tsis poob tom qab 200 hnub ntawm 250 ° C |
N/A |
CF daim ntawv cog lus muab kev ruaj ntseg zoo |
o |
Tsis muaj - txawm nyob hauv 98% H₂SO₄ lossis 40% HF |
Swells hauv cov kuab tshuaj (toluene, acetone, MEK) |
Adhesive o o ua rau ntug lifting |
Corrosion Resistance |
> 95% tensile zog khaws cia tom qab 168h hauv boiling 37% HCl |
Nws txawv ntawm hom |
Fiberglass tuaj yeem tawm tsam los ntawm HF thiab cov hauv paus muaj zog |
Hluav taws xob rwb thaiv tsev |
ntseeg tau |
Degradation tuaj yeem txo lub zog dielectric |
Xaiv cov khoom ua tau raws li qhov xav tau ntawm rwb thaiv tsev |
Cov khoom tseem ceeb: PTFE substrate yog qhov ruaj khov heev. Yuav luag txhua qhov kev pheej hmoo degradation yog los ntawm cov nplaum thiab, rau qhov tsawg dua, fiberglass substrate.
Summary & Selection Guide for Immersion Applications
Ib puag ncig immersion |
Hom kab xev pom zoo |
Vim li cas |
Cov dej tsis huv, tsis sib xws |
Txheem silicone PSA |
Txais tau rau splashes, washdowns |
Cov dej tshiab, txuas ntxiv (> 7 hnub) |
Fluorosilicon PSA los yog nplaum-dawb |
Standard silicone yuav poob adhesion |
Dej ntsev, txhua lub sijhawm |
Adhesive-free PTFE + mechanical fixation |
Ntsev tawm tsam ob lub nplaum thiab fiberglass |
Tsis muaj zog acids / bases (pH 4-10), sib quas ntus |
Txheem silicone PSA |
Txais tau |
Muaj zog acids / bases, organic solvents, nruam |
Adhesive-free PTFE (mechanical fixation) los yog PFPE nplaum |
Tsuas yog cov no muaj sia nyob |
Kev kub siab immersion (> 150 ° C) |
Silicone los yog fluorosilicon PSA |
Acrylic tsis ua haujlwm; PTFE substrate yog zoo |
Nyob rau hauv cov ntsiab lus , PTFE high-temperature daim kab xev yuav siv tau nyob rau hauv immersion daim ntaub ntawv - tab sis tsuas yog hais tias koj to taub cov tsis muaj zog cov ntsiab lus. PTFE substrate yog ze li invincible. Cov fiberglass yog me ntsis yooj yim. Cov nplaum yog qhov kev pheej hmoo ua tsis tiav.
Rau cov dej tshiab tso rau hauv qab 72 teev, tus qauv silicone PSA tau txais. Rau lub sijhawm ntev, dej ntsev, lossis tshuaj lom neeg, hloov mus rau fluorosilicone, PFPE nplaum, lossis - qhov zoo tshaj plaws - tsis muaj nplaum nplaum PTFE daim kab xev nrog cov khoom kho.
Xav tau PTFE daim kab xev spec rau ib puag ncig tshwj xeeb immersion? Aokai PTFE muaj ntau yam kev xaiv nplaum thiab tuaj yeem muab cov ntaub ntawv xeem rau koj cov xwm txheej. Tiv tauj peb nrog koj qhov nruab nrab, qhov kub thiab txias, thiab lub sijhawm cia siab rau immersion.
Cov ntsiab lus no yog muab los ntawm Jiangsu Aokai Tshiab Materials Technology Co., Ltd.
Yog tias koj xav tau cov ncauj lus kom ntxaws, daim ntawv thov cov txheej txheem, thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho, suav nrog PTFE high-temperature npuag, PTFE high-temperature tapes, PTFE mesh siv, seamless fusing tshuab siv, ib sab PTFE coated ntaub, high-temperature conveyor siv thiab high-temperature fiberglass peb: daim ntaub,
Peb ua raws li lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab tau cog lus los muab cov kev daws teeb meem ib zaug thiab txiav txim siab rau txhua tus neeg siv khoom.
