Calendering - nias PTFE-coated ntaub ntawm rhuab daim iav rollers ntawm 360-380 ° C - ua rau muaj kev hloov pauv ntawm qhov chaw morphology, tso tawm cov khoom, impermeability, thiab kev ua haujlwm txhua yam. Nws txo qhov roughness ntawm Ra 0.5-1.0 μm mus rau <0.05 μm, ntsaws ruaj ruaj pinholes, txhim kho hnav tsis kam, tab sis txo cov kua muag zog thiab yooj. Qhov tseem ceeb rau kev tso tawm liners thiab hluav taws xob rwb thaiv tsev.

Fiberglass weave qauv - dawb, twill, los yog satin - cuam tshuam rau PTFE siab-kub ntaub ntaub. Satin weave muaj lub zog tsim kua muag siab tshaj plaws (2-3x tiaj) thiab yooj, zoo tagnrho rau dynamic dabtsi yog khoov. Plain weave muab qhov zoo tshaj plaws kev ruaj ntseg thiab tev adhesion, haum rau kev siv zoo li qub. Twill sib npaug tag nrho cov khoom siv rau kev siv dav dav.

Txheej txheej uniformity ntawm PTFE high-temperature npuag yog txiav txim los ntawm plaub yam: txheej formulation (particle loj 0.15-0.35 μm, viscosity, khoom cov ntsiab lus), txheej & sintering txheej txheem (hniav txheej nyiam rau uniformity), substrate zoo (weave qauv, pre-kho), thiab ntau lawm ib puag ncig (<20-25% R,). Dip + hniav ua ke txheej txheem sib npaug nkag mus thiab nto smoothness.

Kev tu thiab tu kom zoo txuas ntxiv lub neej ntawm PTFE high-temperature ntaub. Ntxuav tom qab siv thiab tom qab txias. Siv cov txhuam hniav mos, cov tshuaj ntxuav tes tsis huv, lossis dej cawv rau stains. Tsis txhob siv cov kua qaub/alkalis, tshuaj dawb, lossis hlau scrapers. Tsis tu ncua silicone roj lubrication txo hnav. Ua raws li cov lus qhia no txhawm rau tiv thaiv cov txheej txheem puas tsuaj.

PTFE high-temperature npuag thiab silicone npuag ob leeg siv fiberglass ntaub los ua lub hauv paus tab sis txawv ntawm cov khoom siv txheej (PTFE resin vs silicone roj hmab). PTFE ua tau zoo nyob rau hauv tsis-stick, hnav tsis kam, thiab tshuaj tiv thaiv mus txog 260 ° C. Silicone npuag muaj kev yooj yim dua, hluav taws xob rwb thaiv tsev, thiab hluav taws kub (txog 230 ° C). Xaiv raws li koj qhov tseem ceeb.

PTFE high-temperature npuag muaj cov tshuaj tiv thaiv tshwj xeeb, tiv taus cov kua qaub, alkalis, cov kuab tshuaj organic, thiab corrosive gases. Tsab ntawv xov xwm no qhia txog nws cov tshuaj tiv thaiv, kev txwv (molten alkali hlau, muaj zog fluorinating cov neeg ua haujlwm), thiab cov ntsiab lus tseem ceeb xws li kub, concentration, thiab kev ntxhov siab.

PTFE impregnation tsis txwv rau fiberglass daim ntaub. Kab lus no qhia txog 7 lwm cov substrates - aramid, carbon fiber, PBI, ntxeem tau hlau, graphite, asbestos (phased tawm), thiab ceramic fillers - nrog lawv cov txheej txheem nta, zoo, kev txwv, thiab cov ntawv thov tseem ceeb.

Kab lus no piav qhia vim li cas cov ntaub ntawv tsis muaj alkali-dawb fiberglass yog qhov nyiam substrate rau PTFE high-temperature ntaub. Nws npog cov tshuaj sib txuas ntawm silane coupling cov neeg ua haujlwm thiab cov khoom siv lub cev tseem ceeb xws li thermal stability, seem stability, thiab corrosion kuj - kom ntseeg tau tias kev ua haujlwm ntev nyob rau hauv ib puag ncig hnyav.