PTFE high-temperature npuag PTFE resin / emulsion (txheej txheem) thiab fiberglass substrate (qhov cuab lub zog). Cov impurities nyob rau hauv ob qho tib si - hlau ions, low-molecular-weight polymers, residual sizing agents, los yog alkali oxides - tuaj yeem ua rau tsis ua hauj lwm ntxov: yellowing, cracking, poob ntawm non-stick, delamination, los yog rwb thaiv tsev tawg.
Aokai PTFE siv high-purity raw cov ntaub ntawv thiab nruj txheej txheem tswj. Phau ntawv qhia no piav qhia txog qhov kev coj dawb huv cuam tshuam li cas rau txhua qhov kev ua tau zoo thiab yog vim li cas nws tseem ceeb rau kev thov kev thov.
PTFE Raw Material Purity - Dab tsi yog impurities muaj?
Feem ntau impurities hauv PTFE muaj xws li:
Unreacted monomers thiab low-molecular-weight polymers
Residual initiators thiab dispersants (piv txwv li, PFOA)
Hlau ions (hlau, tooj liab, sodium)
Kev pab cuam thiab by-products
Cov purity siab dua ua rau cov khoom xa tuaj kom ze rau qhov zoo tshaj plaws specifications.
1. Thaum tshav kub kub tsis kam thiab thermal stability
Hlau ions (hlau, tooj liab, sodium) ua raws li muaj zog catalysts rau PTFE thermal degradation . Nyob rau hauv kev pabcuam ntev tshaj 260 ° C, txawm tias cov kab hlau tsis huv ua rau cov saw hlau molecular tawg, ua rau ntxov ntxov embrittlement thiab tawg. High-purity PTFE nta lub thermal decomposition kub dua, tseem dawb huv, thiab tiv taus yellowing zoo.
Low-molecular-weight polymers thiab oily by-products migrate to the coating surface when high-temperature sintering, forming precipitates.
Deteriorated non-stick khoom: Qhov saum npoo yuav tacky thiab nyiam ua raws li cov khoom siv ua tiav (khoom noj, cov nplaum nplaum).
Kev pheej hmoo kis kab mob: Hauv kev siv zaub mov-qib thiab kev kho mob, cov dej nag nkag tuaj yeem ua rau cov khoom tsis huv thiab tsis ua raws li cov qauv kev nyiam huv. Purity yog ib qho tseem ceeb qhia rau zaub mov-hu rau PTFE fabrics.
Cov impurity ions (hlau cations, halogen ions) pab raws li tus neeg nqa khoom, txo qhov ntim tiv taus thiab tawg voltage. Rau cov ntawv siv hluav taws xob siab (xws li, hluav taws xob insulating gaskets), cov khoom siv raw khoom yog qhov tseem ceeb. Pores tshwm sim los ntawm impurities kuj yuav ua rau ib nrab tso tawm.
4. Tshuaj tiv thaiv thiab compactness
Soluble impurities leach tawm thaum raug tshuaj lom neeg tawm, tawm hauv micro-pores hauv txheej. Cov teeb meem no tso cai rau cov roj corrosive thiab kua nkag mus thiab ua rau cov fiberglass substrate, ua rau cov ntaub thaiv kev ua haujlwm tsis zoo.
Fiberglass Substrate Purity - Alkali Cov ntsiab lus tseem ceeb
Fiberglass tsis yog ntshiab silicon dioxide. Nws cov tshuaj muaj pes tsawg leeg txhais tau tias kub tsis kam, txhua yam muaj zog, thiab kev sib txuas nrog PTFE.
1. Alkali hlau oxide cov ntsiab lus - qhov kev txiav txim siab
Fiberglass Hom
Na₂O + K₂O Cov ntsiab lus
Yam ntxwv
E-iav (tsis muaj alkali)
<0.8%
High purity, zoo heev hluav taws xob rwb thaiv tsev, qeeb zog poob ntawm qhov kub thiab txias - tus qauv rau PTFE ntaub
Medium-alkali iav
~ 12%
Tus nqi qis, tsis muaj cua sov ua haujlwm, lub zog poob qis ntawm qhov kub thiab txias
High-alkali iav
> 15%
Degrades sai heev nyob rau hauv tshav kub; alkali ions catalyze PTFE decomposition
Ntawm qhov kub thiab txias, alkali hlau ions los ntawm cov iav uas tsis muaj purity tsis tsuas yog tsis muaj zog ntawm cov ntaub nws tus kheej tab sis kuj catalyze degradation ntawm PTFE txheej , accelerating tag nrho tsis ua hauj lwm. Tsis tas li ntawd, iav nruab nrab / siab-alkali absorbs noo noo, ua rau rwb thaiv tsev tsis kam poob sharply.
2. Sizing agents – lwm yam impurity
Sizing tus neeg sawv cev (cov hmoov txhuv nplej siab, PVA, roj) yog siv thaum lub sij hawm siv fiberglass los tiv thaiv fibers. Yog tias tsis tau tshem tawm tag nrho ua ntej PTFE txheej, residual organics carbonize, decompose, thiab gasify thaum sintering ntawm ze li ntawm 400 ° C.
Deg tsis xws luag: daj discoloration, dub me ntsis, hlwv - cov khoom tsis zoo li kev soj ntsuam.
Tsis muaj zog interfacial bonding: Cov pa roj carbon residues thaiv cov tshuaj lom neeg thiab lub cev ntawm PTFE thiab fiberglass, ua rau delamination, blistering, thiab tev tawm thaum ua haujlwm.
3. Flexural qaug zog kuj
Micro cua npuas thiab crystalline impurities hauv fiberglass filaments txo tensile lub zog ntawm ib tug neeg fibers. Raws li rov khoov duav, cov teeb meem no dhau los ua cov ntsiab lus ntawm kev ntxhov siab, ua rau muaj fiber ntau tawg thaum ntxov thiab txo qis kev yooj yim thiab lub neej yooj yim.
Raw khoom purity lays lub hauv paus kev ua tau zoo ntawm PTFE high-temperature fabrics:
High-purity PTFE txiav txim siab: qhov siab tshaj plaws kev pab cuam kub (260 ° C +), lub sij hawm ntev tsis-stick stability, txhim khu kev qha hluav taws xob rwb thaiv tsev, thiab cov khoom noj-kev sib cuag.
High-purity alkali-dawb fiberglass (E-iav, Na₂O <0.8%) ntxiv rau kev tshem tawm kom zoo: lub zog substrate ntawm qhov kub thiab txias, qhov ruaj khov, thiab ruaj khov txheej adhesion yam tsis muaj delamination.
Tsis txaus purity nyob rau hauv ib qho kev sib txuas yuav ua rau ua tsis tiav ntxov - yellowing, delamination, rwb thaiv tsev tawg, thiab tsis-sticks - tshwj xeeb tshaj yog nyob rau hauv hnyav tej yam kev mob: lub sij hawm ntev kub kub, high voltage, los yog nruj kev tu cev.
Aokai PTFE qhov chaw tsuas yog high-purity PTFE emulsion (tsawg hlau ion, tsawg oligomer) thiab E-iav fiberglass ntaub (alkali-dawb, tag nrho cov cua sov-tshuaj). Peb muab cov ntaub ntawv pov thawj thiab tuaj yeem txhawb nqa cov zaub mov-qib thiab cov ntaub ntawv pov thawj siab. Tiv tauj peb kom paub meej specifications.
Cov ntsiab lus saum toj no yog muab los ntawm Jiangsu Aokai Tshiab Materials Technology Co., Ltd.
Yog tias koj xav paub ntau ntxiv txog cov ncauj lus kom ntxaws, daim ntawv thov scenarios thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho, suav nrog PTFE high-temperature fabrics, PTFE high-temperature tapes, PTFE mesh bets, seamless bonding machine bets, single-sided PTFE fabric, high-temperature resistant conveyor bets thiab high-temperature fabrics, thov hu rau peb:
Peb ib txwm txhawb nqa lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab tau cog lus los muab kev daws teeb meem rau koj ib leeg thiab kev xav zoo.
