Hauv cov nroj tsuag tshuaj, cov kav dej thiab cov hlab ntsha ntsib kev tawm tsam tsis tu ncua los ntawm kev tawm tsam hnyav - acids muaj zog, kub alkalis, cov kuab tshuaj organic, thiab chav. PTFE daim kab xev yog ib qho kev daws teeb meem rau kev tiv thaiv corrosion, tsis-stick, thiab kev tiv thaiv sealing. Tab sis xaiv txoj kab xev tsis yooj yim li xaiv qhov ntsuas kub siab tshaj plaws.
Aokai PTFE tau muab PTFE daim kab xev rau kev siv tshuaj lom neeg ntau xyoo. Phau ntawv qhia no piav qhia txog peb txheej txheej ntawm PTFE daim kab xev, cov txheej txheem xaiv cov tub ntxhais kawm (kub, tshuaj lom neeg, cov khoom siv tshuab), thiab cov txheej txheem tsim kho tseem ceeb.
Peb-txheej txheej txheem ntawm PTFE High-Temperature Daim kab xev
Tag nrho kev ua tau zoo ntawm kev lag luam PTFE daim kab xev yog txiav txim siab los ntawm peb txheej txheej txheej:
Txheej Txheej
Cov Khoom Siv
Kev cuam tshuam rau kev xaiv khoom
Nto ua haujlwm txheej
Ntshiab PTFE zaj duab xis / PTFE-impregnated fiberglass ntaub
Tswj cov cuab yeej uas tsis yog-stick, tshuaj tiv thaiv, thiab qhov kub siab tshaj plaws ua haujlwm
Txhim kho substrate
Tsis muaj (ntshiab zaj duab xis) / Fiberglass ntaub / Aramid ntaub
Txiav txim siab mechanical zog, tensile resistance, thiab puncture resistance
Adhesive txheej
Silicone PSA, Acrylic PSA, Rubber-raws li PSA
Teem lub siab kub txwv thiab tshuaj tiv thaiv ntawm tag nrho cov kab xev; feem ntau yog qhov kev sib txuas tsis muaj zog tshaj plaws
Kev pom tseem ceeb: Txawm hais tias PTFE nws tus kheej tuaj yeem ua haujlwm ruaj khov los ntawm -190 ° C mus rau 260 ° C mus sij hawm ntev, cov nplaum yog qhov ua haujlwm tsis zoo . Xaiv cov nplaum raws li qhov chaw pabcuam tiag tiag, tsis yog PTFE nto xwb.
Cov txheej txheem kev xaiv tseem ceeb thiab cov ntsiab lus sib xws
1. Kev ua haujlwm kub - kev xaiv nplaum yog qhov tseem ceeb tshaj plaws
Qhov kub thiab txias
Pom zoo Adhesive
Vim li cas
200 ° C - 260 ° C (ntev ntev)
Silicone PSA (yuav tsum tau)
Tsuas yog cov nplaum nplaum uas tuav ruaj khov tackiness ntawm qhov ntau; tsawg residue tom qab tev
120 ° C - 180 ° C nrog superior hnyav & roj kuj
Kub-kub acrylic PSA
Kev sib raug zoo dua li silicone, tab sis ua tsis tau sai ntawm 260 ° C
Hauv qab 100 ° C
Pa acrylic los yog roj hmab-raws li
Txais tau, tab sis tsis tshua muaj nyob rau hauv ib puag ncig tshuaj
Aokai PTFE ceeb toom: Rau cov ntawv thov ntawm 200 ° C +, acrylic PSA tsis tau txais - nws yuav degrade, soften, thiab ua rau daim kab xev tev. Silicone yog tib txoj kev xaiv.
PTFE cov txheej txheem ua haujlwm muaj ze li ntawm universal corrosion kuj (tshwj tsis yog molten alkali hlau thiab high-temperature high-pressure fluorine gas). Txawm li cas los xij, chemical media nkag mus los ntawm cov kab xev thiab ncaj qha erode cov nplaum txheej.
Tshuaj Media
Pom zoo Adhesive
Ceev faj
Inorganic muaj zog acids (HCl, H₂SO₄ ≤80%), muaj zog alkalis (NaOH), brine, dej vapor
Silicone PSA
Zoo heev kam rau ua; tsim ruaj khov cladding
Cov kuab tshuaj organic (ketones, esters, benzene, toluene), roj, roj, muaj zog oxidizing acids (HNO₃, concentrated H₂SO₄), glacial acetic acid
Acrylic PSA (qib hnyav-resistant)
Silicone swells hauv cov kuab tshuaj organic; acrylic yog pom zoo, tab sis xyuas qhov ntsuas kub (feem ntau ≤150 ° C)
High-temperature steam + high-concentration acid/alkali (alternating exposure)
Hloov kho silicone PSA + ntau txheej winding
Cov mob hnyav tshaj plaws - silicone yuav hydrolyze; txhawb nqa nrog ntau txheej winding
Rau qhov kub siab tshaj 150 ° C nrog cov kuab tshuaj organic: Siv cov khoom kho lossis cov kua nplaum tsis muaj cua sov-shrink ntshiab PTFE daim kab xev / tubing.
Daim ntawv thov scenarios thiab sib thooj substrate xaiv
Daim ntawv thov Scenario
Pom zoo Substrate
Yog vim li cas
Cov yeeb nkab sab nrauv los tiv thaiv corrosion & anti-stick txheej (tiv thaiv cov khoom sib tsoo)
High-strength PTFE-coated fiberglass npuag (xim av / dub)
Hnav-resistant, tsim kua muag-resistant; thickness 0.13-0.25 hli; haum rau rov winding, zoo heev conformability
Vessel puab phab ntsa & flange nto anti-stick liner
Pob tshab ntshiab PTFE zaj duab xis
Ultra-nplua tsis-stick nto, tsis muaj fiber ntau wicking txaus ntshai; zoo tagnrho rau cov chaw tiaj tus thiab loj nkhaus
Mixing ncej & roller wrapping
PTFE fiberglass ntaub nrog high-tack silicone nplaum
Txhawb nro winding; fiberglass substrate muab lub zog tensile siab, tsis txhob deformation thaum tig
Xov sealing thiab hloov gasket
Machined ntshiab PTFE zaj duab xis daim kab xev
Siv PTFE txias ntws cov cuab yeej los sau qhov khoob; fiberglass-dawb daim kab xev yog yuav tsum tau
Manholes & pom tsom iav ntawm lub zog acid cia tanks
Ntshiab PTFE zaj duab xis / fiberglass ntaub nrog tshuaj-resistant acrylic nplaum
Ntshiab zaj duab xis cais tawm corrosive media; fiberglass ntaub txhim kho toughness; lap joints xav tau ntau txheej txheej
Kev tsim kho tseem ceeb thiab cov lus qhia txog kev nyab xeeb
1. Nto pretreatment - lub hauv paus ntawm kev sib raug zoo
Ua kom tiav degreasing, xeb tshem tawm, thiab ziab yog xav tau. So ntawm qhov chaw nrog acetone lossis cawv ua raws li cov nplaim hluav taws kub ceev kom sib zog ua kom muaj zog. Qhov no tshem tawm cov kab mob thiab ua kom cov hlau nto rau qhov siab tshaj plaws adhesion.
2. Overlap thiab winding txheej
Yam tsawg kawg ntawm 2-3 winding txheej yog xav tau rau kev tiv thaiv tshuaj nrog 50% sib tshooj ntawm ib lub voj voog. Daim kab xev xaus yuav tsum tau ntxiv nrog rau PTFE daim kab xev los yog stainless hlau cable ties los tiv thaiv tag nrho tev tom qab nplaum nkag los ntawm xov xwm.
3. Kev nyab xeeb pib - thaum twg kom tsis txhob PTFE daim kab xev tag nrho
Rau cov xov xwm huab cua hauv qab no, tag nrho cov kab xev nrog cov organic nplaum tsis zoo :
Lwm txoj kev: Hloov mus rau tag nrho PTFE hauv ob sab phlu lossis welded tsau cladding (tsis muaj nplaum).
4. Kev ntsuas tiv thaiv zoo li qub thiab tawg-pov thawj
Yog hais tias lub raj xa dej xa cov khoom siv hluav taws xob thiab cov khoom zoo li qub tuaj yeem tshwm sim, xaiv PTFE daim kab xev los tiv thaiv (feem ntau tsaus nti nrog cov pa roj carbon muab tub lim, nto tiv taus 10⁶-10⁹ Ω) kom dissipate tus nqi zoo li qub.
Summary - PTFE Daim Kab Xev Xaiv Cov Lus Qhia Ceev rau Kev Siv Tshuaj
Yog tias koj ib puag ncig yog ...
Xaiv...
Zam...
200-260 ° C, acids / alkali / chav
Silicone PSA + fiberglass substrate
Acrylic PSA (yuav degrade)
120-150 ° C, cov kuab tshuaj organic
Acrylic PSA (hloov-resistant)
Silicone PSA (swells hauv cov kuab tshuaj)
> 150 ° C, cov kuab tshuaj organic
Ntshiab PTFE zaj duab xis + mechanical kho
Txhua daim kab xev
HF, boiling> 80% alkali, ClF₃
PTFE nkaus xwb hauv ob sab phlu (tsis muaj nplaum)
Txhua daim kab xev nrog organic nplaum
Cov ntaub ntawv flammable, static txaus ntshai
Anti-static (carbon-filled) PTFE daim kab xev
Non-conductive standard daim kab xev
Xov sealing, qhov sib txawv filling
Skived ntshiab PTFE zaj duab xis daim kab xev
Fiberglass-reinforced daim kab xev
Aokai PTFE muaj ntau yam ntawm PTFE tapes rau kev siv tshuaj lom neeg - silicone PSA rau high-temp acid / alkali kev pab cuam, acrylic PSA rau hnyav kuj, thiab anti-static qib. Tiv tauj peb nrog koj cov tshuaj chemical, qhov kub thiab txias, thiab cov kev xav tau ntawm cov khoom siv rau kev xaiv.
Cov ntsiab lus saum toj 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 thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho suav nrog PTFE high-temperature ntaub, PTFE high-temperature adhesive tape, PTFE high-temperature mesh belt, seamless heat press belt, single-sided PTFE fabric, high-temperature resistant conveyor belt thiab heat-resistant fiberglass daim ntaub hauv qab no:
Peb ib txwm ua raws li kev tshaj lij thiab kev ncaj ncees-taw qhia kev pabcuam kev xav, ua siab dawb muab ib qho kev daws teeb meem thiab kev xav zoo rau txhua tus neeg koom tes!
